13d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 23d14c5d2SYehuda Sadeh 33d14c5d2SYehuda Sadeh #include <linux/module.h> 43d14c5d2SYehuda Sadeh #include <linux/err.h> 53d14c5d2SYehuda Sadeh #include <linux/highmem.h> 63d14c5d2SYehuda Sadeh #include <linux/mm.h> 73d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 83d14c5d2SYehuda Sadeh #include <linux/slab.h> 93d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 103d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 113d14c5d2SYehuda Sadeh #include <linux/bio.h> 123d14c5d2SYehuda Sadeh #endif 133d14c5d2SYehuda Sadeh 143d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 153d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 203d14c5d2SYehuda Sadeh 213d14c5d2SYehuda Sadeh #define OSD_OP_FRONT_LEN 4096 223d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 233d14c5d2SYehuda Sadeh 243d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 253d14c5d2SYehuda Sadeh 26f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc); 276f6c7006SSage Weil static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 28a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 29a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 30a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 31a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 3256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 33a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 343d14c5d2SYehuda Sadeh 353d14c5d2SYehuda Sadeh /* 363d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 373d14c5d2SYehuda Sadeh * 383d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 393d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 403d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 413d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 423d14c5d2SYehuda Sadeh * access to storage. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 453d14c5d2SYehuda Sadeh * are described by the osd map. 463d14c5d2SYehuda Sadeh * 473d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 483d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 493d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 503d14c5d2SYehuda Sadeh * channel with an OSD is reset. 513d14c5d2SYehuda Sadeh */ 523d14c5d2SYehuda Sadeh 533d14c5d2SYehuda Sadeh /* 543d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 553d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 563d14c5d2SYehuda Sadeh * object boundary. 573d14c5d2SYehuda Sadeh * 583d14c5d2SYehuda Sadeh * fill osd op in request message. 593d14c5d2SYehuda Sadeh */ 60dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 61a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 623d14c5d2SYehuda Sadeh { 6360e56f13SAlex Elder u64 orig_len = *plen; 64d63b77f4SSage Weil int r; 653d14c5d2SYehuda Sadeh 6660e56f13SAlex Elder /* object extent? */ 6775d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 6875d1c941SAlex Elder objoff, objlen); 69d63b77f4SSage Weil if (r < 0) 70d63b77f4SSage Weil return r; 7175d1c941SAlex Elder if (*objlen < orig_len) { 7275d1c941SAlex Elder *plen = *objlen; 7360e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 7460e56f13SAlex Elder orig_len - *plen, off, *plen); 7560e56f13SAlex Elder } 7660e56f13SAlex Elder 7775d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 783d14c5d2SYehuda Sadeh 793ff5f385SAlex Elder return 0; 803d14c5d2SYehuda Sadeh } 813d14c5d2SYehuda Sadeh 8243bfe5deSAlex Elder void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 8343bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 8443bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 8543bfe5deSAlex Elder { 8643bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 8743bfe5deSAlex Elder osd_data->pages = pages; 8843bfe5deSAlex Elder osd_data->length = length; 8943bfe5deSAlex Elder osd_data->alignment = alignment; 9043bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 9143bfe5deSAlex Elder osd_data->own_pages = own_pages; 9243bfe5deSAlex Elder } 9343bfe5deSAlex Elder EXPORT_SYMBOL(ceph_osd_data_pages_init); 9443bfe5deSAlex Elder 9543bfe5deSAlex Elder void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 9643bfe5deSAlex Elder struct ceph_pagelist *pagelist) 9743bfe5deSAlex Elder { 9843bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 9943bfe5deSAlex Elder osd_data->pagelist = pagelist; 10043bfe5deSAlex Elder } 10143bfe5deSAlex Elder EXPORT_SYMBOL(ceph_osd_data_pagelist_init); 10243bfe5deSAlex Elder 10343bfe5deSAlex Elder #ifdef CONFIG_BLOCK 10443bfe5deSAlex Elder void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 10543bfe5deSAlex Elder struct bio *bio, size_t bio_length) 10643bfe5deSAlex Elder { 10743bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 10843bfe5deSAlex Elder osd_data->bio = bio; 10943bfe5deSAlex Elder osd_data->bio_length = bio_length; 11043bfe5deSAlex Elder } 11143bfe5deSAlex Elder EXPORT_SYMBOL(ceph_osd_data_bio_init); 11243bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 11343bfe5deSAlex Elder 1143d14c5d2SYehuda Sadeh /* 1153d14c5d2SYehuda Sadeh * requests 1163d14c5d2SYehuda Sadeh */ 1173d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1183d14c5d2SYehuda Sadeh { 119e0c59487SAlex Elder int num_pages; 1203d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 1213d14c5d2SYehuda Sadeh struct ceph_osd_request, 1223d14c5d2SYehuda Sadeh r_kref); 1233d14c5d2SYehuda Sadeh 1243d14c5d2SYehuda Sadeh if (req->r_request) 1253d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 126ace6d3a9SAlex Elder if (req->r_reply) { 1278921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 128ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 129ace6d3a9SAlex Elder } 1300fff87ecSAlex Elder 1310fff87ecSAlex Elder if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES && 132e0c59487SAlex Elder req->r_data_in.own_pages) { 133e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_in.alignment, 134e0c59487SAlex Elder (u64)req->r_data_in.length); 135e0c59487SAlex Elder ceph_release_page_vector(req->r_data_in.pages, num_pages); 136e0c59487SAlex Elder } 1370fff87ecSAlex Elder if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES && 138e0c59487SAlex Elder req->r_data_out.own_pages) { 139e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_out.alignment, 140e0c59487SAlex Elder (u64)req->r_data_out.length); 141e0c59487SAlex Elder ceph_release_page_vector(req->r_data_out.pages, num_pages); 142e0c59487SAlex Elder } 1430fff87ecSAlex Elder 1443d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1453d14c5d2SYehuda Sadeh if (req->r_mempool) 1463d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1473d14c5d2SYehuda Sadeh else 1483d14c5d2SYehuda Sadeh kfree(req); 1493d14c5d2SYehuda Sadeh } 1503d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1513d14c5d2SYehuda Sadeh 1523d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1533d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1541b83bef2SSage Weil unsigned int num_ops, 1553d14c5d2SYehuda Sadeh bool use_mempool, 15654a54007SAlex Elder gfp_t gfp_flags) 1573d14c5d2SYehuda Sadeh { 1583d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1593d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1601b83bef2SSage Weil size_t msg_size; 1613d14c5d2SYehuda Sadeh 1621b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1631b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1641b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1651b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1661b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1671b83bef2SSage Weil msg_size += 8; /* snapid */ 1681b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1691b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1701b83bef2SSage Weil msg_size += 4; 1713d14c5d2SYehuda Sadeh 1723d14c5d2SYehuda Sadeh if (use_mempool) { 1733d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1743d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1753d14c5d2SYehuda Sadeh } else { 1763d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1773d14c5d2SYehuda Sadeh } 1783d14c5d2SYehuda Sadeh if (req == NULL) 1793d14c5d2SYehuda Sadeh return NULL; 1803d14c5d2SYehuda Sadeh 1813d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1823d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1833d14c5d2SYehuda Sadeh 1843d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1853d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1863d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 187a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1883d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 189a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 190a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 191935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 192cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 193cd43045cSSage Weil 1943d14c5d2SYehuda Sadeh /* create reply message */ 1953d14c5d2SYehuda Sadeh if (use_mempool) 1963d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 1973d14c5d2SYehuda Sadeh else 1983d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 199b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 2003d14c5d2SYehuda Sadeh if (!msg) { 2013d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2023d14c5d2SYehuda Sadeh return NULL; 2033d14c5d2SYehuda Sadeh } 2043d14c5d2SYehuda Sadeh req->r_reply = msg; 2053d14c5d2SYehuda Sadeh 2060fff87ecSAlex Elder req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE; 2070fff87ecSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE; 208d50b409fSSage Weil 2093d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2103d14c5d2SYehuda Sadeh if (use_mempool) 2113d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2123d14c5d2SYehuda Sadeh else 213b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2143d14c5d2SYehuda Sadeh if (!msg) { 2153d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2163d14c5d2SYehuda Sadeh return NULL; 2173d14c5d2SYehuda Sadeh } 2183d14c5d2SYehuda Sadeh 2193d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2203d14c5d2SYehuda Sadeh 2213d14c5d2SYehuda Sadeh req->r_request = msg; 2223d14c5d2SYehuda Sadeh 2233d14c5d2SYehuda Sadeh return req; 2243d14c5d2SYehuda Sadeh } 2253d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2263d14c5d2SYehuda Sadeh 227a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 228a8dd0a37SAlex Elder { 229a8dd0a37SAlex Elder switch (opcode) { 230a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 231a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 232a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 233a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 234a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 235a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 236a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 237a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 238a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 239a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 240a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 241a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 242a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 243a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 244a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 245a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 246a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 247a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 248a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 249a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 250a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 251a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 252a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 253a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 254a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 255a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 256a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 257a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 258a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 259a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 260a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 261a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 262a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 263a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 264a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 265a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 266a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 267a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 268a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 269a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 270a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 271a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 272a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 273a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 274a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 275a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 276a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 277a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 278a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 279a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 280a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 281a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 282a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 283a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 284a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 285a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 286a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 287a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 288a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 289a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 290a8dd0a37SAlex Elder return true; 291a8dd0a37SAlex Elder default: 292a8dd0a37SAlex Elder return false; 293a8dd0a37SAlex Elder } 294a8dd0a37SAlex Elder } 295a8dd0a37SAlex Elder 29633803f33SAlex Elder /* 29733803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 29833803f33SAlex Elder * other information associated with them. It also serves as a 29933803f33SAlex Elder * common init routine for all the other init functions, below. 30033803f33SAlex Elder */ 30133803f33SAlex Elder void osd_req_op_init(struct ceph_osd_req_op *op, u16 opcode) 30233803f33SAlex Elder { 30333803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 30433803f33SAlex Elder 30533803f33SAlex Elder memset(op, 0, sizeof (*op)); 30633803f33SAlex Elder 30733803f33SAlex Elder op->op = opcode; 30833803f33SAlex Elder } 30933803f33SAlex Elder 31033803f33SAlex Elder void osd_req_op_extent_init(struct ceph_osd_req_op *op, u16 opcode, 31133803f33SAlex Elder u64 offset, u64 length, 31233803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 31333803f33SAlex Elder { 31433803f33SAlex Elder size_t payload_len = 0; 31533803f33SAlex Elder 31633803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 31733803f33SAlex Elder 31833803f33SAlex Elder osd_req_op_init(op, opcode); 31933803f33SAlex Elder 32033803f33SAlex Elder op->extent.offset = offset; 32133803f33SAlex Elder op->extent.length = length; 32233803f33SAlex Elder op->extent.truncate_size = truncate_size; 32333803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 32433803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 32533803f33SAlex Elder payload_len += length; 32633803f33SAlex Elder 32733803f33SAlex Elder op->payload_len = payload_len; 32833803f33SAlex Elder } 32933803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 33033803f33SAlex Elder 331e5975c7cSAlex Elder void osd_req_op_extent_update(struct ceph_osd_req_op *op, u64 length) 332e5975c7cSAlex Elder { 333e5975c7cSAlex Elder u64 previous = op->extent.length; 334e5975c7cSAlex Elder 335e5975c7cSAlex Elder if (length == previous) 336e5975c7cSAlex Elder return; /* Nothing to do */ 337e5975c7cSAlex Elder BUG_ON(length > previous); 338e5975c7cSAlex Elder 339e5975c7cSAlex Elder op->extent.length = length; 340e5975c7cSAlex Elder op->payload_len -= previous - length; 341e5975c7cSAlex Elder } 342e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 343e5975c7cSAlex Elder 34433803f33SAlex Elder void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, 34533803f33SAlex Elder const char *class, const char *method, 34633803f33SAlex Elder const void *request_data, size_t request_data_size) 34733803f33SAlex Elder { 34833803f33SAlex Elder size_t payload_len = 0; 34933803f33SAlex Elder size_t size; 35033803f33SAlex Elder 35133803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 35233803f33SAlex Elder 35333803f33SAlex Elder osd_req_op_init(op, opcode); 35433803f33SAlex Elder 35533803f33SAlex Elder op->cls.class_name = class; 35633803f33SAlex Elder size = strlen(class); 35733803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 35833803f33SAlex Elder op->cls.class_len = size; 35933803f33SAlex Elder payload_len += size; 36033803f33SAlex Elder 36133803f33SAlex Elder op->cls.method_name = method; 36233803f33SAlex Elder size = strlen(method); 36333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 36433803f33SAlex Elder op->cls.method_len = size; 36533803f33SAlex Elder payload_len += size; 36633803f33SAlex Elder 36733803f33SAlex Elder op->cls.indata = request_data; 36833803f33SAlex Elder BUG_ON(request_data_size > (size_t) U32_MAX); 36933803f33SAlex Elder op->cls.indata_len = (u32) request_data_size; 37033803f33SAlex Elder payload_len += request_data_size; 37133803f33SAlex Elder 37233803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 37333803f33SAlex Elder 37433803f33SAlex Elder op->payload_len = payload_len; 37533803f33SAlex Elder } 37633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 37733803f33SAlex Elder 37833803f33SAlex Elder void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, 37933803f33SAlex Elder u64 cookie, u64 version, int flag) 38033803f33SAlex Elder { 38133803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 38233803f33SAlex Elder 38333803f33SAlex Elder osd_req_op_init(op, opcode); 38433803f33SAlex Elder 38533803f33SAlex Elder op->watch.cookie = cookie; 38633803f33SAlex Elder /* op->watch.ver = version; */ /* XXX 3847 */ 38733803f33SAlex Elder op->watch.ver = cpu_to_le64(version); 38833803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 38933803f33SAlex Elder op->watch.flag = (u8) 1; 39033803f33SAlex Elder } 39133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 39233803f33SAlex Elder 393175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 3943d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 3953d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 3963d14c5d2SYehuda Sadeh { 397175face2SAlex Elder u64 out_data_len = 0; 39895e072ebSAlex Elder struct ceph_pagelist *pagelist; 399175face2SAlex Elder 400a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 401a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 402a8dd0a37SAlex Elder 403a8dd0a37SAlex Elder return 0; 404a8dd0a37SAlex Elder } 4053d14c5d2SYehuda Sadeh 406065a68f9SAlex Elder switch (src->op) { 407fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 408fbfab539SAlex Elder break; 4093d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 4103d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 411175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 412175face2SAlex Elder out_data_len = src->extent.length; 413175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 414175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 4153d14c5d2SYehuda Sadeh dst->extent.truncate_size = 4163d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 4173d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 4183d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 4193d14c5d2SYehuda Sadeh break; 4203d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 42195e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 42295e072ebSAlex Elder BUG_ON(!pagelist); 42395e072ebSAlex Elder ceph_pagelist_init(pagelist); 42495e072ebSAlex Elder 4253d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 4263d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 4273d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 42895e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 4293d14c5d2SYehuda Sadeh src->cls.class_len); 43095e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 4313d14c5d2SYehuda Sadeh src->cls.method_len); 43295e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.indata, 4333d14c5d2SYehuda Sadeh src->cls.indata_len); 43495e072ebSAlex Elder 43543bfe5deSAlex Elder ceph_osd_data_pagelist_init(&req->r_data_out, pagelist); 43695e072ebSAlex Elder out_data_len = pagelist->length; 4373d14c5d2SYehuda Sadeh break; 4383d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 4393d14c5d2SYehuda Sadeh break; 440a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 441a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 442a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 443a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 444a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 445a40c4f10SYehuda Sadeh break; 4463d14c5d2SYehuda Sadeh default: 4474c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 4488f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 4494c46459cSAlex Elder WARN_ON(1); 450a8dd0a37SAlex Elder 451a8dd0a37SAlex Elder return 0; 4523d14c5d2SYehuda Sadeh } 453a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 4543d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 455175face2SAlex Elder 456175face2SAlex Elder return out_data_len; 4573d14c5d2SYehuda Sadeh } 4583d14c5d2SYehuda Sadeh 4593d14c5d2SYehuda Sadeh /* 4603d14c5d2SYehuda Sadeh * build new request AND message 4613d14c5d2SYehuda Sadeh * 4623d14c5d2SYehuda Sadeh */ 4633d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 464175face2SAlex Elder u64 off, unsigned int num_ops, 4653d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 4664d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 467af77f26cSAlex Elder struct timespec *mtime) 4683d14c5d2SYehuda Sadeh { 4693d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 4703d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 4713d14c5d2SYehuda Sadeh void *p; 4721b83bef2SSage Weil size_t msg_size; 4733d14c5d2SYehuda Sadeh int flags = req->r_flags; 474f44246e3SAlex Elder u64 data_len; 4753d14c5d2SYehuda Sadeh int i; 4763d14c5d2SYehuda Sadeh 4771b83bef2SSage Weil req->r_num_ops = num_ops; 4781b83bef2SSage Weil req->r_snapid = snap_id; 4793d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 4803d14c5d2SYehuda Sadeh 4811b83bef2SSage Weil /* encode request */ 4821b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 4833d14c5d2SYehuda Sadeh 4841b83bef2SSage Weil p = msg->front.iov_base; 4851b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 4861b83bef2SSage Weil req->r_request_osdmap_epoch = p; 4871b83bef2SSage Weil p += 4; 4881b83bef2SSage Weil req->r_request_flags = p; 4891b83bef2SSage Weil p += 4; 4901b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 4911b83bef2SSage Weil ceph_encode_timespec(p, mtime); 4921b83bef2SSage Weil p += sizeof(struct ceph_timespec); 4931b83bef2SSage Weil req->r_request_reassert_version = p; 4941b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 4951b83bef2SSage Weil 4961b83bef2SSage Weil /* oloc */ 4971b83bef2SSage Weil ceph_encode_8(&p, 4); 4981b83bef2SSage Weil ceph_encode_8(&p, 4); 4991b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 5001b83bef2SSage Weil req->r_request_pool = p; 5011b83bef2SSage Weil p += 8; 5021b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5031b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 5041b83bef2SSage Weil 5051b83bef2SSage Weil ceph_encode_8(&p, 1); 5061b83bef2SSage Weil req->r_request_pgid = p; 5071b83bef2SSage Weil p += 8 + 4; 5081b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5091b83bef2SSage Weil 5101b83bef2SSage Weil /* oid */ 5111b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 512af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 5131b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 514af77f26cSAlex Elder p += req->r_oid_len; 5153d14c5d2SYehuda Sadeh 516175face2SAlex Elder /* ops--can imply data */ 5171b83bef2SSage Weil ceph_encode_16(&p, num_ops); 5183d14c5d2SYehuda Sadeh src_op = src_ops; 5191b83bef2SSage Weil req->r_request_ops = p; 520175face2SAlex Elder data_len = 0; 5211b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 522175face2SAlex Elder data_len += osd_req_encode_op(req, p, src_op); 5231b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 5241b83bef2SSage Weil } 5253d14c5d2SYehuda Sadeh 5261b83bef2SSage Weil /* snaps */ 5271b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 5281b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 5291b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 5301b83bef2SSage Weil if (req->r_snapc) { 5313d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 5321b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 5333d14c5d2SYehuda Sadeh } 5343d14c5d2SYehuda Sadeh } 5353d14c5d2SYehuda Sadeh 5361b83bef2SSage Weil req->r_request_attempts = p; 5371b83bef2SSage Weil p += 4; 5381b83bef2SSage Weil 539175face2SAlex Elder /* data */ 5400baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 5410baa1bd9SAlex Elder u16 data_off; 5420baa1bd9SAlex Elder 5430baa1bd9SAlex Elder /* 5440baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 5450baa1bd9SAlex Elder * allowing it to align received data into its 5460baa1bd9SAlex Elder * buffers such that there's no need to re-copy 5470baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 5480baa1bd9SAlex Elder */ 5490baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 5500baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 5510baa1bd9SAlex Elder } 552f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 553c5c6b19dSSage Weil 5543d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 5553d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 5563d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 5573d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 5581b83bef2SSage Weil 559acead002SAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 5603d14c5d2SYehuda Sadeh } 5613d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 5623d14c5d2SYehuda Sadeh 5633d14c5d2SYehuda Sadeh /* 5643d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 5653d14c5d2SYehuda Sadeh * extent as needed. 5663d14c5d2SYehuda Sadeh * 5673d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 5683d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 5693d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 5703d14c5d2SYehuda Sadeh * 5713d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 5723d14c5d2SYehuda Sadeh * data quickly. 5733d14c5d2SYehuda Sadeh */ 5743d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 5753d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 5763d14c5d2SYehuda Sadeh struct ceph_vino vino, 577acead002SAlex Elder u64 off, u64 *plen, int num_ops, 578acead002SAlex Elder struct ceph_osd_req_op *ops, 5793d14c5d2SYehuda Sadeh int opcode, int flags, 5803d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5813d14c5d2SYehuda Sadeh u32 truncate_seq, 5823d14c5d2SYehuda Sadeh u64 truncate_size, 583153e5167SAlex Elder bool use_mempool) 5843d14c5d2SYehuda Sadeh { 5853d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 58675d1c941SAlex Elder u64 objnum = 0; 58775d1c941SAlex Elder u64 objoff = 0; 58875d1c941SAlex Elder u64 objlen = 0; 589d18d1e28SAlex Elder u32 object_size; 590d18d1e28SAlex Elder u64 object_base; 5916816282dSSage Weil int r; 5923d14c5d2SYehuda Sadeh 593d18d1e28SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 5943d14c5d2SYehuda Sadeh 595acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 596ae7ca4a3SAlex Elder GFP_NOFS); 5974ad12621SSage Weil if (!req) 5986816282dSSage Weil return ERR_PTR(-ENOMEM); 599d178a9e7SAlex Elder req->r_flags = flags; 6003d14c5d2SYehuda Sadeh 6013d14c5d2SYehuda Sadeh /* calculate max write size */ 602a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 6033ff5f385SAlex Elder if (r < 0) { 6043ff5f385SAlex Elder ceph_osdc_put_request(req); 6056816282dSSage Weil return ERR_PTR(r); 6063ff5f385SAlex Elder } 607a19dadfbSAlex Elder 608d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 609d18d1e28SAlex Elder object_base = off - objoff; 610d18d1e28SAlex Elder if (truncate_size <= object_base) { 611d18d1e28SAlex Elder truncate_size = 0; 612d18d1e28SAlex Elder } else { 613d18d1e28SAlex Elder truncate_size -= object_base; 614d18d1e28SAlex Elder if (truncate_size > object_size) 615d18d1e28SAlex Elder truncate_size = object_size; 616d18d1e28SAlex Elder } 617d18d1e28SAlex Elder 618b0270324SAlex Elder osd_req_op_extent_init(&ops[0], opcode, objoff, objlen, 619b0270324SAlex Elder truncate_size, truncate_seq); 620acead002SAlex Elder /* 621acead002SAlex Elder * A second op in the ops array means the caller wants to 622acead002SAlex Elder * also issue a include a 'startsync' command so that the 623acead002SAlex Elder * osd will flush data quickly. 624acead002SAlex Elder */ 625acead002SAlex Elder if (num_ops > 1) 626b0270324SAlex Elder osd_req_op_init(&ops[1], CEPH_OSD_OP_STARTSYNC); 627d18d1e28SAlex Elder 6283d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 6293d14c5d2SYehuda Sadeh 63075d1c941SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", 63175d1c941SAlex Elder vino.ino, objnum); 632dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 633dbe0fc41SAlex Elder 6343d14c5d2SYehuda Sadeh return req; 6353d14c5d2SYehuda Sadeh } 6363d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 6373d14c5d2SYehuda Sadeh 6383d14c5d2SYehuda Sadeh /* 6393d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 6403d14c5d2SYehuda Sadeh */ 6413d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 6423d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 6433d14c5d2SYehuda Sadeh { 6443d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 6453d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6463d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 6473d14c5d2SYehuda Sadeh 6483d14c5d2SYehuda Sadeh while (*p) { 6493d14c5d2SYehuda Sadeh parent = *p; 6503d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 6513d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 6523d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 6533d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 6543d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 6553d14c5d2SYehuda Sadeh else 6563d14c5d2SYehuda Sadeh BUG(); 6573d14c5d2SYehuda Sadeh } 6583d14c5d2SYehuda Sadeh 6593d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 6603d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 6613d14c5d2SYehuda Sadeh } 6623d14c5d2SYehuda Sadeh 6633d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 6643d14c5d2SYehuda Sadeh u64 tid) 6653d14c5d2SYehuda Sadeh { 6663d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6673d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6683d14c5d2SYehuda Sadeh 6693d14c5d2SYehuda Sadeh while (n) { 6703d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6713d14c5d2SYehuda Sadeh if (tid < req->r_tid) 6723d14c5d2SYehuda Sadeh n = n->rb_left; 6733d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 6743d14c5d2SYehuda Sadeh n = n->rb_right; 6753d14c5d2SYehuda Sadeh else 6763d14c5d2SYehuda Sadeh return req; 6773d14c5d2SYehuda Sadeh } 6783d14c5d2SYehuda Sadeh return NULL; 6793d14c5d2SYehuda Sadeh } 6803d14c5d2SYehuda Sadeh 6813d14c5d2SYehuda Sadeh static struct ceph_osd_request * 6823d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 6833d14c5d2SYehuda Sadeh u64 tid) 6843d14c5d2SYehuda Sadeh { 6853d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6863d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6873d14c5d2SYehuda Sadeh 6883d14c5d2SYehuda Sadeh while (n) { 6893d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6903d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 6913d14c5d2SYehuda Sadeh if (!n->rb_left) 6923d14c5d2SYehuda Sadeh return req; 6933d14c5d2SYehuda Sadeh n = n->rb_left; 6943d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 6953d14c5d2SYehuda Sadeh n = n->rb_right; 6963d14c5d2SYehuda Sadeh } else { 6973d14c5d2SYehuda Sadeh return req; 6983d14c5d2SYehuda Sadeh } 6993d14c5d2SYehuda Sadeh } 7003d14c5d2SYehuda Sadeh return NULL; 7013d14c5d2SYehuda Sadeh } 7023d14c5d2SYehuda Sadeh 7036f6c7006SSage Weil /* 7046f6c7006SSage Weil * Resubmit requests pending on the given osd. 7056f6c7006SSage Weil */ 7066f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 7076f6c7006SSage Weil struct ceph_osd *osd) 7086f6c7006SSage Weil { 709a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 710e02493c0SAlex Elder LIST_HEAD(resend); 7116f6c7006SSage Weil int err; 7126f6c7006SSage Weil 7136f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 7146f6c7006SSage Weil err = __reset_osd(osdc, osd); 715685a7555SAlex Elder if (err) 7166f6c7006SSage Weil return; 717e02493c0SAlex Elder /* 718e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 719e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 720e02493c0SAlex Elder * sent in tid order, and that is also the order they're 721e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 722e02493c0SAlex Elder * flight will be found first, followed by all requests that 723e02493c0SAlex Elder * have not yet been sent. And to resend requests while 724e02493c0SAlex Elder * preserving this order we will want to put any sent 725e02493c0SAlex Elder * requests back on the front of the osd client's unsent 726e02493c0SAlex Elder * list. 727e02493c0SAlex Elder * 728e02493c0SAlex Elder * So we build a separate ordered list of already-sent 729e02493c0SAlex Elder * requests for the affected osd and splice it onto the 730e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 731e02493c0SAlex Elder * request that has not yet been sent we're done. Those 732e02493c0SAlex Elder * requests are already sitting right where they belong. 733e02493c0SAlex Elder */ 7346f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 735e02493c0SAlex Elder if (!req->r_sent) 736e02493c0SAlex Elder break; 737e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 738e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 7396f6c7006SSage Weil osd->o_osd); 740a40c4f10SYehuda Sadeh if (!req->r_linger) 7416f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 7426f6c7006SSage Weil } 743e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 744a40c4f10SYehuda Sadeh 745e02493c0SAlex Elder /* 746e02493c0SAlex Elder * Linger requests are re-registered before sending, which 747e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 748e02493c0SAlex Elder * list at the end to keep things in tid order. 749e02493c0SAlex Elder */ 750a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 751a40c4f10SYehuda Sadeh r_linger_osd) { 75277f38e0eSSage Weil /* 75377f38e0eSSage Weil * reregister request prior to unregistering linger so 75477f38e0eSSage Weil * that r_osd is preserved. 75577f38e0eSSage Weil */ 75677f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 757a40c4f10SYehuda Sadeh __register_request(osdc, req); 758e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 759ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 76077f38e0eSSage Weil __unregister_linger_request(osdc, req); 761a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 762a40c4f10SYehuda Sadeh osd->o_osd); 763a40c4f10SYehuda Sadeh } 7646f6c7006SSage Weil } 7656f6c7006SSage Weil 7663d14c5d2SYehuda Sadeh /* 7673d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 7683d14c5d2SYehuda Sadeh */ 7693d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 7703d14c5d2SYehuda Sadeh { 7713d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 7723d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 7733d14c5d2SYehuda Sadeh 7743d14c5d2SYehuda Sadeh if (!osd) 7753d14c5d2SYehuda Sadeh return; 7763d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 7773d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 7783d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 77983aff95eSSage Weil mutex_lock(&osdc->request_mutex); 78083aff95eSSage Weil __kick_osd_requests(osdc, osd); 781f9d25199SAlex Elder __send_queued(osdc); 78283aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 7833d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 7843d14c5d2SYehuda Sadeh } 7853d14c5d2SYehuda Sadeh 7863d14c5d2SYehuda Sadeh /* 7873d14c5d2SYehuda Sadeh * Track open sessions with osds. 7883d14c5d2SYehuda Sadeh */ 789e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 7903d14c5d2SYehuda Sadeh { 7913d14c5d2SYehuda Sadeh struct ceph_osd *osd; 7923d14c5d2SYehuda Sadeh 7933d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 7943d14c5d2SYehuda Sadeh if (!osd) 7953d14c5d2SYehuda Sadeh return NULL; 7963d14c5d2SYehuda Sadeh 7973d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 7983d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 799e10006f8SAlex Elder osd->o_osd = onum; 800f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 8013d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 802a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 8033d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 8043d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 8053d14c5d2SYehuda Sadeh 806b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 8073d14c5d2SYehuda Sadeh 8083d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 8093d14c5d2SYehuda Sadeh return osd; 8103d14c5d2SYehuda Sadeh } 8113d14c5d2SYehuda Sadeh 8123d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 8133d14c5d2SYehuda Sadeh { 8143d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 8153d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 8163d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 8173d14c5d2SYehuda Sadeh return osd; 8183d14c5d2SYehuda Sadeh } else { 8193d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 8203d14c5d2SYehuda Sadeh return NULL; 8213d14c5d2SYehuda Sadeh } 8223d14c5d2SYehuda Sadeh } 8233d14c5d2SYehuda Sadeh 8243d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 8253d14c5d2SYehuda Sadeh { 8263d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 8273d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 828a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 8293d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 8303d14c5d2SYehuda Sadeh 83127859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 8323d14c5d2SYehuda Sadeh kfree(osd); 8333d14c5d2SYehuda Sadeh } 8343d14c5d2SYehuda Sadeh } 8353d14c5d2SYehuda Sadeh 8363d14c5d2SYehuda Sadeh /* 8373d14c5d2SYehuda Sadeh * remove an osd from our map 8383d14c5d2SYehuda Sadeh */ 8393d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8403d14c5d2SYehuda Sadeh { 8413d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 8423d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 8433d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 8443d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8453d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 8463d14c5d2SYehuda Sadeh put_osd(osd); 8473d14c5d2SYehuda Sadeh } 8483d14c5d2SYehuda Sadeh 849aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 850aca420bcSSage Weil { 851048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 852aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 853aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 854aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 855aca420bcSSage Weil struct ceph_osd, o_node); 856aca420bcSSage Weil __remove_osd(osdc, osd); 857aca420bcSSage Weil } 858aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 859aca420bcSSage Weil } 860aca420bcSSage Weil 8613d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 8623d14c5d2SYehuda Sadeh struct ceph_osd *osd) 8633d14c5d2SYehuda Sadeh { 8643d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 8653d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 8663d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 8673d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 8683d14c5d2SYehuda Sadeh } 8693d14c5d2SYehuda Sadeh 8703d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 8713d14c5d2SYehuda Sadeh { 8723d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 8733d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 8743d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8753d14c5d2SYehuda Sadeh } 8763d14c5d2SYehuda Sadeh 877aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 8783d14c5d2SYehuda Sadeh { 8793d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 8803d14c5d2SYehuda Sadeh 8813d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 8823d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 8833d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 884aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 8853d14c5d2SYehuda Sadeh break; 8863d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 8873d14c5d2SYehuda Sadeh } 8883d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 8893d14c5d2SYehuda Sadeh } 8903d14c5d2SYehuda Sadeh 8913d14c5d2SYehuda Sadeh /* 8923d14c5d2SYehuda Sadeh * reset osd connect 8933d14c5d2SYehuda Sadeh */ 8943d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8953d14c5d2SYehuda Sadeh { 896c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 8973d14c5d2SYehuda Sadeh 8983d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 899a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 900a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 9013d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 902c3acb181SAlex Elder 903c3acb181SAlex Elder return -ENODEV; 904c3acb181SAlex Elder } 905c3acb181SAlex Elder 906c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 907c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 9083d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 909c3acb181SAlex Elder struct ceph_osd_request *req; 910c3acb181SAlex Elder 9113d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 9123d14c5d2SYehuda Sadeh " letting msgr retry"); 9133d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 9143d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 9153d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 916c3acb181SAlex Elder 917c3acb181SAlex Elder return -EAGAIN; 9183d14c5d2SYehuda Sadeh } 919c3acb181SAlex Elder 920c3acb181SAlex Elder ceph_con_close(&osd->o_con); 921c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 922c3acb181SAlex Elder osd->o_incarnation++; 923c3acb181SAlex Elder 924c3acb181SAlex Elder return 0; 9253d14c5d2SYehuda Sadeh } 9263d14c5d2SYehuda Sadeh 9273d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 9283d14c5d2SYehuda Sadeh { 9293d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 9303d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 9313d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 9323d14c5d2SYehuda Sadeh 933aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 9343d14c5d2SYehuda Sadeh while (*p) { 9353d14c5d2SYehuda Sadeh parent = *p; 9363d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 9373d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 9383d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 9393d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 9403d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 9413d14c5d2SYehuda Sadeh else 9423d14c5d2SYehuda Sadeh BUG(); 9433d14c5d2SYehuda Sadeh } 9443d14c5d2SYehuda Sadeh 9453d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 9463d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 9473d14c5d2SYehuda Sadeh } 9483d14c5d2SYehuda Sadeh 9493d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 9503d14c5d2SYehuda Sadeh { 9513d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9523d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 9533d14c5d2SYehuda Sadeh 9543d14c5d2SYehuda Sadeh while (n) { 9553d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 9563d14c5d2SYehuda Sadeh if (o < osd->o_osd) 9573d14c5d2SYehuda Sadeh n = n->rb_left; 9583d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 9593d14c5d2SYehuda Sadeh n = n->rb_right; 9603d14c5d2SYehuda Sadeh else 9613d14c5d2SYehuda Sadeh return osd; 9623d14c5d2SYehuda Sadeh } 9633d14c5d2SYehuda Sadeh return NULL; 9643d14c5d2SYehuda Sadeh } 9653d14c5d2SYehuda Sadeh 9663d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 9673d14c5d2SYehuda Sadeh { 9683d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 9693d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 9703d14c5d2SYehuda Sadeh } 9713d14c5d2SYehuda Sadeh 9723d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 9733d14c5d2SYehuda Sadeh { 9743d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 9753d14c5d2SYehuda Sadeh } 9763d14c5d2SYehuda Sadeh 9773d14c5d2SYehuda Sadeh /* 9783d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 9793d14c5d2SYehuda Sadeh * the timeout event. 9803d14c5d2SYehuda Sadeh */ 981a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 9823d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9833d14c5d2SYehuda Sadeh { 9843d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 9853d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 98677f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 9873d14c5d2SYehuda Sadeh __insert_request(osdc, req); 9883d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 9893d14c5d2SYehuda Sadeh osdc->num_requests++; 9903d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 9913d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 9923d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 9933d14c5d2SYehuda Sadeh } 994a40c4f10SYehuda Sadeh } 995a40c4f10SYehuda Sadeh 9963d14c5d2SYehuda Sadeh /* 9973d14c5d2SYehuda Sadeh * called under osdc->request_mutex 9983d14c5d2SYehuda Sadeh */ 9993d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 10003d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10013d14c5d2SYehuda Sadeh { 100235f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 100335f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 100435f9f8a0SSage Weil req, req->r_tid); 100535f9f8a0SSage Weil return; 100635f9f8a0SSage Weil } 100735f9f8a0SSage Weil 10083d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 10093d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 10103d14c5d2SYehuda Sadeh osdc->num_requests--; 10113d14c5d2SYehuda Sadeh 10123d14c5d2SYehuda Sadeh if (req->r_osd) { 10133d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 10146740a845SAlex Elder ceph_msg_revoke(req->r_request); 10153d14c5d2SYehuda Sadeh 10163d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1017a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1018a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1019a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 10203d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1021a40c4f10SYehuda Sadeh } 1022fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 10233d14c5d2SYehuda Sadeh req->r_osd = NULL; 10243d14c5d2SYehuda Sadeh } 10253d14c5d2SYehuda Sadeh 10267d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 10273d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 10283d14c5d2SYehuda Sadeh 10293d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 10303d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 10313d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 10323d14c5d2SYehuda Sadeh } 10333d14c5d2SYehuda Sadeh } 10343d14c5d2SYehuda Sadeh 10353d14c5d2SYehuda Sadeh /* 10363d14c5d2SYehuda Sadeh * Cancel a previously queued request message 10373d14c5d2SYehuda Sadeh */ 10383d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 10393d14c5d2SYehuda Sadeh { 10403d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 10416740a845SAlex Elder ceph_msg_revoke(req->r_request); 10423d14c5d2SYehuda Sadeh req->r_sent = 0; 10433d14c5d2SYehuda Sadeh } 10443d14c5d2SYehuda Sadeh } 10453d14c5d2SYehuda Sadeh 1046a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1047a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1048a40c4f10SYehuda Sadeh { 1049a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 1050a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 10516194ea89SSage Weil if (req->r_osd) 10526194ea89SSage Weil list_add_tail(&req->r_linger_osd, 10536194ea89SSage Weil &req->r_osd->o_linger_requests); 1054a40c4f10SYehuda Sadeh } 1055a40c4f10SYehuda Sadeh 1056a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1057a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1058a40c4f10SYehuda Sadeh { 1059a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1060a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 106161c74035SAlex Elder if (req->r_osd) { 1062a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1063a40c4f10SYehuda Sadeh 1064a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1065a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1066a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1067a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1068a40c4f10SYehuda Sadeh } 1069fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1070a40c4f10SYehuda Sadeh req->r_osd = NULL; 1071a40c4f10SYehuda Sadeh } 1072a40c4f10SYehuda Sadeh } 1073a40c4f10SYehuda Sadeh 1074a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1075a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1076a40c4f10SYehuda Sadeh { 1077a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1078a40c4f10SYehuda Sadeh if (req->r_linger) { 1079a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 1080a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 1081a40c4f10SYehuda Sadeh } 1082a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1083a40c4f10SYehuda Sadeh } 1084a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1085a40c4f10SYehuda Sadeh 1086a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1087a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1088a40c4f10SYehuda Sadeh { 1089a40c4f10SYehuda Sadeh if (!req->r_linger) { 1090a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1091a40c4f10SYehuda Sadeh req->r_linger = 1; 1092a40c4f10SYehuda Sadeh /* 1093a40c4f10SYehuda Sadeh * caller is now responsible for calling 1094a40c4f10SYehuda Sadeh * unregister_linger_request 1095a40c4f10SYehuda Sadeh */ 1096a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 1097a40c4f10SYehuda Sadeh } 1098a40c4f10SYehuda Sadeh } 1099a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1100a40c4f10SYehuda Sadeh 11013d14c5d2SYehuda Sadeh /* 11023d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 11033d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 110425985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 11056f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 11063d14c5d2SYehuda Sadeh * 11073d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 11083d14c5d2SYehuda Sadeh * 11093d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 11103d14c5d2SYehuda Sadeh */ 11116f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 111238d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 11133d14c5d2SYehuda Sadeh { 11145b191d99SSage Weil struct ceph_pg pgid; 11153d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 11163d14c5d2SYehuda Sadeh int o = -1, num = 0; 11173d14c5d2SYehuda Sadeh int err; 11183d14c5d2SYehuda Sadeh 11196f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 112041766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 112141766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 11226f6c7006SSage Weil if (err) { 11236f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11243d14c5d2SYehuda Sadeh return err; 11256f6c7006SSage Weil } 11263d14c5d2SYehuda Sadeh req->r_pgid = pgid; 11273d14c5d2SYehuda Sadeh 11283d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 11293d14c5d2SYehuda Sadeh if (err > 0) { 11303d14c5d2SYehuda Sadeh o = acting[0]; 11313d14c5d2SYehuda Sadeh num = err; 11323d14c5d2SYehuda Sadeh } 11333d14c5d2SYehuda Sadeh 113438d6453cSSage Weil if ((!force_resend && 113538d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 11363d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 11373d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 11383d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 11393d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 11403d14c5d2SYehuda Sadeh return 0; /* no change */ 11413d14c5d2SYehuda Sadeh 11425b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 11435b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 11443d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11453d14c5d2SYehuda Sadeh 11463d14c5d2SYehuda Sadeh /* record full pg acting set */ 11473d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 11483d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 11493d14c5d2SYehuda Sadeh 11503d14c5d2SYehuda Sadeh if (req->r_osd) { 11513d14c5d2SYehuda Sadeh __cancel_request(req); 11523d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 11533d14c5d2SYehuda Sadeh req->r_osd = NULL; 11543d14c5d2SYehuda Sadeh } 11553d14c5d2SYehuda Sadeh 11563d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 11573d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 11583d14c5d2SYehuda Sadeh err = -ENOMEM; 1159e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 11606f6c7006SSage Weil if (!req->r_osd) { 11616f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11623d14c5d2SYehuda Sadeh goto out; 11636f6c7006SSage Weil } 11643d14c5d2SYehuda Sadeh 11656f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 11663d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 11673d14c5d2SYehuda Sadeh 1168b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1169b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1170b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 11713d14c5d2SYehuda Sadeh } 11723d14c5d2SYehuda Sadeh 11733d14c5d2SYehuda Sadeh if (req->r_osd) { 11743d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1175ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1176ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 11776f6c7006SSage Weil } else { 1178ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 11793d14c5d2SYehuda Sadeh } 11803d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 11813d14c5d2SYehuda Sadeh 11823d14c5d2SYehuda Sadeh out: 11833d14c5d2SYehuda Sadeh return err; 11843d14c5d2SYehuda Sadeh } 11853d14c5d2SYehuda Sadeh 11863d14c5d2SYehuda Sadeh /* 11873d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 11883d14c5d2SYehuda Sadeh */ 118956e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 11903d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11913d14c5d2SYehuda Sadeh { 11921b83bef2SSage Weil void *p; 11933d14c5d2SYehuda Sadeh 11941b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 11951b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 11961b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 11973d14c5d2SYehuda Sadeh 11981b83bef2SSage Weil /* fill in message content that changes each time we send it */ 11991b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 12001b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 12011b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 12021b83bef2SSage Weil p = req->r_request_pgid; 12031b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 12041b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 12051b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 12061b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 12071b83bef2SSage Weil sizeof(req->r_reassert_version)); 12082169aea6SSage Weil 12093d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 12103d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 12113d14c5d2SYehuda Sadeh 12123d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 12133d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 12143d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 12153d14c5d2SYehuda Sadeh } 12163d14c5d2SYehuda Sadeh 12173d14c5d2SYehuda Sadeh /* 12186f6c7006SSage Weil * Send any requests in the queue (req_unsent). 12196f6c7006SSage Weil */ 1220f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 12216f6c7006SSage Weil { 12226f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 12236f6c7006SSage Weil 1224f9d25199SAlex Elder dout("__send_queued\n"); 1225f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 12266f6c7006SSage Weil __send_request(osdc, req); 12276f6c7006SSage Weil } 12286f6c7006SSage Weil 12296f6c7006SSage Weil /* 12303d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 12313d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 12323d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 12333d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 12343d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 12353d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 12363d14c5d2SYehuda Sadeh * there are no open requests). 12373d14c5d2SYehuda Sadeh */ 12383d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 12393d14c5d2SYehuda Sadeh { 12403d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12413d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 124283aff95eSSage Weil struct ceph_osd_request *req; 12433d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12443d14c5d2SYehuda Sadeh unsigned long keepalive = 12453d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 12463d14c5d2SYehuda Sadeh struct list_head slow_osds; 12473d14c5d2SYehuda Sadeh dout("timeout\n"); 12483d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 12493d14c5d2SYehuda Sadeh 12503d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12513d14c5d2SYehuda Sadeh 12523d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12533d14c5d2SYehuda Sadeh 12543d14c5d2SYehuda Sadeh /* 12553d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 12563d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 12573d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 12583d14c5d2SYehuda Sadeh */ 12593d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 12603d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 12613d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 12623d14c5d2SYehuda Sadeh break; 12633d14c5d2SYehuda Sadeh 12643d14c5d2SYehuda Sadeh osd = req->r_osd; 12653d14c5d2SYehuda Sadeh BUG_ON(!osd); 12663d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 12673d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 12683d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 12693d14c5d2SYehuda Sadeh } 12703d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 12713d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 12723d14c5d2SYehuda Sadeh o_keepalive_item); 12733d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 12743d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 12753d14c5d2SYehuda Sadeh } 12763d14c5d2SYehuda Sadeh 12773d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1278f9d25199SAlex Elder __send_queued(osdc); 12793d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12803d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12813d14c5d2SYehuda Sadeh } 12823d14c5d2SYehuda Sadeh 12833d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 12843d14c5d2SYehuda Sadeh { 12853d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12863d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 12873d14c5d2SYehuda Sadeh osds_timeout_work.work); 12883d14c5d2SYehuda Sadeh unsigned long delay = 12893d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 12903d14c5d2SYehuda Sadeh 12913d14c5d2SYehuda Sadeh dout("osds timeout\n"); 12923d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1293aca420bcSSage Weil remove_old_osds(osdc); 12943d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12953d14c5d2SYehuda Sadeh 12963d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 12973d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 12983d14c5d2SYehuda Sadeh } 12993d14c5d2SYehuda Sadeh 130025845472SSage Weil static void complete_request(struct ceph_osd_request *req) 130125845472SSage Weil { 130225845472SSage Weil if (req->r_safe_callback) 130325845472SSage Weil req->r_safe_callback(req, NULL); 130425845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 130525845472SSage Weil } 130625845472SSage Weil 13073d14c5d2SYehuda Sadeh /* 13083d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 13093d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 13103d14c5d2SYehuda Sadeh */ 13113d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 13123d14c5d2SYehuda Sadeh struct ceph_connection *con) 13133d14c5d2SYehuda Sadeh { 13141b83bef2SSage Weil void *p, *end; 13153d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 13163d14c5d2SYehuda Sadeh u64 tid; 13171b83bef2SSage Weil int object_len; 13181b83bef2SSage Weil int numops, payload_len, flags; 13193d14c5d2SYehuda Sadeh s32 result; 13201b83bef2SSage Weil s32 retry_attempt; 13211b83bef2SSage Weil struct ceph_pg pg; 13221b83bef2SSage Weil int err; 13231b83bef2SSage Weil u32 reassert_epoch; 13241b83bef2SSage Weil u64 reassert_version; 13251b83bef2SSage Weil u32 osdmap_epoch; 13260d5af164SAlex Elder int already_completed; 13279fc6e064SAlex Elder u32 bytes; 13281b83bef2SSage Weil int i; 13293d14c5d2SYehuda Sadeh 13303d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 13311b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 13321b83bef2SSage Weil 13331b83bef2SSage Weil p = msg->front.iov_base; 13341b83bef2SSage Weil end = p + msg->front.iov_len; 13351b83bef2SSage Weil 13361b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13371b83bef2SSage Weil object_len = ceph_decode_32(&p); 13381b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 13391b83bef2SSage Weil p += object_len; 13401b83bef2SSage Weil 1341ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 13421b83bef2SSage Weil if (err) 13433d14c5d2SYehuda Sadeh goto bad; 13441b83bef2SSage Weil 13451b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 13461b83bef2SSage Weil flags = ceph_decode_64(&p); 13471b83bef2SSage Weil result = ceph_decode_32(&p); 13481b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 13491b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 13501b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 13511b83bef2SSage Weil 13523d14c5d2SYehuda Sadeh /* lookup */ 13533d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13543d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 13553d14c5d2SYehuda Sadeh if (req == NULL) { 13563d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 13578058fd45SAlex Elder goto bad_mutex; 13583d14c5d2SYehuda Sadeh } 13593d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 13601b83bef2SSage Weil 13611b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 13621b83bef2SSage Weil req, result); 13631b83bef2SSage Weil 13641b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13651b83bef2SSage Weil numops = ceph_decode_32(&p); 13661b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 13671b83bef2SSage Weil goto bad_put; 13681b83bef2SSage Weil if (numops != req->r_num_ops) 13691b83bef2SSage Weil goto bad_put; 13701b83bef2SSage Weil payload_len = 0; 13711b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 13721b83bef2SSage Weil for (i = 0; i < numops; i++) { 13731b83bef2SSage Weil struct ceph_osd_op *op = p; 13741b83bef2SSage Weil int len; 13751b83bef2SSage Weil 13761b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 13771b83bef2SSage Weil req->r_reply_op_len[i] = len; 13781b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 13791b83bef2SSage Weil payload_len += len; 13801b83bef2SSage Weil p += sizeof(*op); 13811b83bef2SSage Weil } 13829fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 13839fc6e064SAlex Elder if (payload_len != bytes) { 13841b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 13859fc6e064SAlex Elder payload_len, bytes); 13861b83bef2SSage Weil goto bad_put; 13871b83bef2SSage Weil } 13881b83bef2SSage Weil 13891b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 13901b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 13911b83bef2SSage Weil for (i = 0; i < numops; i++) 13921b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 13933d14c5d2SYehuda Sadeh 13943d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 13953d14c5d2SYehuda Sadeh 13961b83bef2SSage Weil req->r_result = result; 13973d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 13983d14c5d2SYehuda Sadeh bytes); 13993d14c5d2SYehuda Sadeh if (req->r_result == 0) 14003d14c5d2SYehuda Sadeh req->r_result = bytes; 14013d14c5d2SYehuda Sadeh 14023d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 14031b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 14041b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 14053d14c5d2SYehuda Sadeh 14063d14c5d2SYehuda Sadeh req->r_got_reply = 1; 14073d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 14083d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 14093d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14103d14c5d2SYehuda Sadeh goto done; 14113d14c5d2SYehuda Sadeh } 14123d14c5d2SYehuda Sadeh 14133d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 14143d14c5d2SYehuda Sadeh 1415a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1416a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1417a40c4f10SYehuda Sadeh 14183d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 14193d14c5d2SYehuda Sadeh if (result < 0 || 14203d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 14213d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 14223d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 14233d14c5d2SYehuda Sadeh 14240d5af164SAlex Elder already_completed = req->r_completed; 14250d5af164SAlex Elder req->r_completed = 1; 14263d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14270d5af164SAlex Elder if (already_completed) 14280d5af164SAlex Elder goto done; 14293d14c5d2SYehuda Sadeh 14303d14c5d2SYehuda Sadeh if (req->r_callback) 14313d14c5d2SYehuda Sadeh req->r_callback(req, msg); 14323d14c5d2SYehuda Sadeh else 14333d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 14343d14c5d2SYehuda Sadeh 143525845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 143625845472SSage Weil complete_request(req); 14373d14c5d2SYehuda Sadeh 14383d14c5d2SYehuda Sadeh done: 1439a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 14403d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 14413d14c5d2SYehuda Sadeh return; 14423d14c5d2SYehuda Sadeh 14431b83bef2SSage Weil bad_put: 14441b83bef2SSage Weil ceph_osdc_put_request(req); 14458058fd45SAlex Elder bad_mutex: 14468058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 14473d14c5d2SYehuda Sadeh bad: 14481b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 14491b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 14503d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 14513d14c5d2SYehuda Sadeh } 14523d14c5d2SYehuda Sadeh 14536f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 14543d14c5d2SYehuda Sadeh { 14553d14c5d2SYehuda Sadeh struct rb_node *p, *n; 14563d14c5d2SYehuda Sadeh 14573d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 14586f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 14593d14c5d2SYehuda Sadeh 14603d14c5d2SYehuda Sadeh n = rb_next(p); 14613d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 14623d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 14633d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 14643d14c5d2SYehuda Sadeh osd->o_osd), 14653d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 14663d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 14673d14c5d2SYehuda Sadeh } 14683d14c5d2SYehuda Sadeh } 14693d14c5d2SYehuda Sadeh 14703d14c5d2SYehuda Sadeh /* 14716f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 14726f6c7006SSage Weil * no osd, request a new map. 14733d14c5d2SYehuda Sadeh * 1474e6d50f67SAlex Elder * Caller should hold map_sem for read. 14753d14c5d2SYehuda Sadeh */ 147638d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 14773d14c5d2SYehuda Sadeh { 1478a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 14796f6c7006SSage Weil struct rb_node *p; 14806f6c7006SSage Weil int needmap = 0; 14816f6c7006SSage Weil int err; 14823d14c5d2SYehuda Sadeh 148338d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 14843d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14856194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 14866f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 14876194ea89SSage Weil p = rb_next(p); 1488ab60b16dSAlex Elder 1489ab60b16dSAlex Elder /* 1490ab60b16dSAlex Elder * For linger requests that have not yet been 1491ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1492ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1493ab60b16dSAlex Elder * the request before re-registering it as a linger 1494ab60b16dSAlex Elder * request to ensure the __map_request() below 1495ab60b16dSAlex Elder * will decide it needs to be sent. 1496ab60b16dSAlex Elder */ 1497ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1498ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1499ab60b16dSAlex Elder req, req->r_tid, 1500ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1501ab60b16dSAlex Elder __unregister_request(osdc, req); 1502ab60b16dSAlex Elder __register_linger_request(osdc, req); 1503ab60b16dSAlex Elder continue; 1504ab60b16dSAlex Elder } 1505ab60b16dSAlex Elder 150638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 15076f6c7006SSage Weil if (err < 0) 15086f6c7006SSage Weil continue; /* error */ 15096f6c7006SSage Weil if (req->r_osd == NULL) { 15106f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 15116f6c7006SSage Weil needmap++; /* request a newer map */ 15126f6c7006SSage Weil } else if (err > 0) { 15136194ea89SSage Weil if (!req->r_linger) { 15146194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 15156194ea89SSage Weil req->r_tid, 15166f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 15176f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 15186f6c7006SSage Weil } 15196f6c7006SSage Weil } 15206194ea89SSage Weil } 1521a40c4f10SYehuda Sadeh 1522a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1523a40c4f10SYehuda Sadeh r_linger_item) { 1524a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1525a40c4f10SYehuda Sadeh 152638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1527ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1528a40c4f10SYehuda Sadeh if (err == 0) 1529a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1530a40c4f10SYehuda Sadeh if (err < 0) 1531a40c4f10SYehuda Sadeh continue; /* hrm! */ 1532a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1533a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1534a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1535a40c4f10SYehuda Sadeh continue; 1536a40c4f10SYehuda Sadeh } 1537a40c4f10SYehuda Sadeh 1538a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1539a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1540a40c4f10SYehuda Sadeh __register_request(osdc, req); 1541c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1542a40c4f10SYehuda Sadeh } 15433d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15443d14c5d2SYehuda Sadeh 15453d14c5d2SYehuda Sadeh if (needmap) { 15463d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 15473d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15483d14c5d2SYehuda Sadeh } 1549e6d50f67SAlex Elder reset_changed_osds(osdc); 15503d14c5d2SYehuda Sadeh } 15516f6c7006SSage Weil 15526f6c7006SSage Weil 15533d14c5d2SYehuda Sadeh /* 15543d14c5d2SYehuda Sadeh * Process updated osd map. 15553d14c5d2SYehuda Sadeh * 15563d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 15573d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 15583d14c5d2SYehuda Sadeh * off to different OSDs as needed. 15593d14c5d2SYehuda Sadeh */ 15603d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 15613d14c5d2SYehuda Sadeh { 15623d14c5d2SYehuda Sadeh void *p, *end, *next; 15633d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 15643d14c5d2SYehuda Sadeh u32 epoch; 15653d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 15663d14c5d2SYehuda Sadeh int err; 15673d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 15683d14c5d2SYehuda Sadeh 15693d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 15703d14c5d2SYehuda Sadeh p = msg->front.iov_base; 15713d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 15723d14c5d2SYehuda Sadeh 15733d14c5d2SYehuda Sadeh /* verify fsid */ 15743d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 15753d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 15763d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 15773d14c5d2SYehuda Sadeh return; 15783d14c5d2SYehuda Sadeh 15793d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 15803d14c5d2SYehuda Sadeh 15813d14c5d2SYehuda Sadeh /* incremental maps */ 15823d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15833d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 15843d14c5d2SYehuda Sadeh while (nr_maps > 0) { 15853d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15863d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15873d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15883d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15893d14c5d2SYehuda Sadeh next = p + maplen; 15903d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 15913d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 15923d14c5d2SYehuda Sadeh epoch, maplen); 15933d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 15943d14c5d2SYehuda Sadeh osdc->osdmap, 159515d9882cSAlex Elder &osdc->client->msgr); 15963d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 15973d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 15983d14c5d2SYehuda Sadeh goto bad; 15993d14c5d2SYehuda Sadeh } 16003d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16013d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 16023d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 16033d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 16043d14c5d2SYehuda Sadeh } 160538d6453cSSage Weil kick_requests(osdc, 0); 16063d14c5d2SYehuda Sadeh } else { 16073d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 16083d14c5d2SYehuda Sadeh epoch, maplen); 16093d14c5d2SYehuda Sadeh } 16103d14c5d2SYehuda Sadeh p = next; 16113d14c5d2SYehuda Sadeh nr_maps--; 16123d14c5d2SYehuda Sadeh } 16133d14c5d2SYehuda Sadeh if (newmap) 16143d14c5d2SYehuda Sadeh goto done; 16153d14c5d2SYehuda Sadeh 16163d14c5d2SYehuda Sadeh /* full maps */ 16173d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16183d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 16193d14c5d2SYehuda Sadeh while (nr_maps) { 16203d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16213d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16223d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16233d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16243d14c5d2SYehuda Sadeh if (nr_maps > 1) { 16253d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 16263d14c5d2SYehuda Sadeh epoch, maplen); 16273d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 16283d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 16293d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 16303d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 16313d14c5d2SYehuda Sadeh } else { 163238d6453cSSage Weil int skipped_map = 0; 163338d6453cSSage Weil 16343d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 16353d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 16363d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16373d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16383d14c5d2SYehuda Sadeh goto bad; 16393d14c5d2SYehuda Sadeh } 16403d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16413d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 16423d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 164338d6453cSSage Weil if (oldmap) { 164438d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 164538d6453cSSage Weil skipped_map = 1; 16463d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 164738d6453cSSage Weil } 164838d6453cSSage Weil kick_requests(osdc, skipped_map); 16493d14c5d2SYehuda Sadeh } 16503d14c5d2SYehuda Sadeh p += maplen; 16513d14c5d2SYehuda Sadeh nr_maps--; 16523d14c5d2SYehuda Sadeh } 16533d14c5d2SYehuda Sadeh 16543d14c5d2SYehuda Sadeh done: 16553d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 16563d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1657cd634fb6SSage Weil 1658cd634fb6SSage Weil /* 1659cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1660cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1661cd634fb6SSage Weil * ENOSPC. 1662cd634fb6SSage Weil */ 1663cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1664cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1665cd634fb6SSage Weil 1666f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1667f9d25199SAlex Elder __send_queued(osdc); 1668f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 16693d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16703d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 16713d14c5d2SYehuda Sadeh return; 16723d14c5d2SYehuda Sadeh 16733d14c5d2SYehuda Sadeh bad: 16743d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 16753d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 16763d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 16773d14c5d2SYehuda Sadeh return; 16783d14c5d2SYehuda Sadeh } 16793d14c5d2SYehuda Sadeh 16803d14c5d2SYehuda Sadeh /* 1681a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1682a40c4f10SYehuda Sadeh * 1683a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1684a40c4f10SYehuda Sadeh */ 1685a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1686a40c4f10SYehuda Sadeh { 1687a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1688a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1689a40c4f10SYehuda Sadeh 1690a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1691a40c4f10SYehuda Sadeh kfree(event); 1692a40c4f10SYehuda Sadeh } 1693a40c4f10SYehuda Sadeh 1694a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1695a40c4f10SYehuda Sadeh { 1696a40c4f10SYehuda Sadeh kref_get(&event->kref); 1697a40c4f10SYehuda Sadeh } 1698a40c4f10SYehuda Sadeh 1699a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1700a40c4f10SYehuda Sadeh { 1701a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1702a40c4f10SYehuda Sadeh } 1703a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1704a40c4f10SYehuda Sadeh 1705a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1706a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1707a40c4f10SYehuda Sadeh { 1708a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1709a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1710a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1711a40c4f10SYehuda Sadeh 1712a40c4f10SYehuda Sadeh while (*p) { 1713a40c4f10SYehuda Sadeh parent = *p; 1714a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1715a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1716a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1717a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1718a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1719a40c4f10SYehuda Sadeh else 1720a40c4f10SYehuda Sadeh BUG(); 1721a40c4f10SYehuda Sadeh } 1722a40c4f10SYehuda Sadeh 1723a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1724a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1725a40c4f10SYehuda Sadeh } 1726a40c4f10SYehuda Sadeh 1727a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1728a40c4f10SYehuda Sadeh u64 cookie) 1729a40c4f10SYehuda Sadeh { 1730a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1731a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1732a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1733a40c4f10SYehuda Sadeh 1734a40c4f10SYehuda Sadeh while (*p) { 1735a40c4f10SYehuda Sadeh parent = *p; 1736a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1737a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1738a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1739a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1740a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1741a40c4f10SYehuda Sadeh else 1742a40c4f10SYehuda Sadeh return event; 1743a40c4f10SYehuda Sadeh } 1744a40c4f10SYehuda Sadeh return NULL; 1745a40c4f10SYehuda Sadeh } 1746a40c4f10SYehuda Sadeh 1747a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1748a40c4f10SYehuda Sadeh { 1749a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1750a40c4f10SYehuda Sadeh 1751a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1752a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1753a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1754a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1755a40c4f10SYehuda Sadeh } else { 1756a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1757a40c4f10SYehuda Sadeh } 1758a40c4f10SYehuda Sadeh } 1759a40c4f10SYehuda Sadeh 1760a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1761a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 17623c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1763a40c4f10SYehuda Sadeh { 1764a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1765a40c4f10SYehuda Sadeh 1766a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1767a40c4f10SYehuda Sadeh if (!event) 1768a40c4f10SYehuda Sadeh return -ENOMEM; 1769a40c4f10SYehuda Sadeh 1770a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1771a40c4f10SYehuda Sadeh event->cb = event_cb; 17723c663bbdSAlex Elder event->one_shot = 0; 1773a40c4f10SYehuda Sadeh event->data = data; 1774a40c4f10SYehuda Sadeh event->osdc = osdc; 1775a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 17763ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1777a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1778a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1779a40c4f10SYehuda Sadeh 1780a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1781a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1782a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1783a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1784a40c4f10SYehuda Sadeh 1785a40c4f10SYehuda Sadeh *pevent = event; 1786a40c4f10SYehuda Sadeh return 0; 1787a40c4f10SYehuda Sadeh } 1788a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1789a40c4f10SYehuda Sadeh 1790a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1791a40c4f10SYehuda Sadeh { 1792a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1793a40c4f10SYehuda Sadeh 1794a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1795a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1796a40c4f10SYehuda Sadeh __remove_event(event); 1797a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1798a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1799a40c4f10SYehuda Sadeh } 1800a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1801a40c4f10SYehuda Sadeh 1802a40c4f10SYehuda Sadeh 1803a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1804a40c4f10SYehuda Sadeh { 1805a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1806a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1807a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1808a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1809a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1810a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1811a40c4f10SYehuda Sadeh 1812a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1813a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1814a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1815a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1816a40c4f10SYehuda Sadeh kfree(event_work); 1817a40c4f10SYehuda Sadeh } 1818a40c4f10SYehuda Sadeh 1819a40c4f10SYehuda Sadeh 1820a40c4f10SYehuda Sadeh /* 1821a40c4f10SYehuda Sadeh * Process osd watch notifications 1822a40c4f10SYehuda Sadeh */ 18233c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 18243c663bbdSAlex Elder struct ceph_msg *msg) 1825a40c4f10SYehuda Sadeh { 1826a40c4f10SYehuda Sadeh void *p, *end; 1827a40c4f10SYehuda Sadeh u8 proto_ver; 1828a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1829a40c4f10SYehuda Sadeh u8 opcode; 1830a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1831a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1832a40c4f10SYehuda Sadeh 1833a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1834a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1835a40c4f10SYehuda Sadeh 1836a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1837a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1838a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1839a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1840a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1841a40c4f10SYehuda Sadeh 1842a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1843a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1844a40c4f10SYehuda Sadeh if (event) { 18453c663bbdSAlex Elder BUG_ON(event->one_shot); 1846a40c4f10SYehuda Sadeh get_event(event); 1847a40c4f10SYehuda Sadeh } 1848a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1849a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1850a40c4f10SYehuda Sadeh cookie, ver, event); 1851a40c4f10SYehuda Sadeh if (event) { 1852a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1853a40c4f10SYehuda Sadeh if (!event_work) { 1854a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1855a40c4f10SYehuda Sadeh goto done_err; 1856a40c4f10SYehuda Sadeh } 18576b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1858a40c4f10SYehuda Sadeh event_work->event = event; 1859a40c4f10SYehuda Sadeh event_work->ver = ver; 1860a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1861a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1862a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1863a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1864a40c4f10SYehuda Sadeh goto done_err; 1865a40c4f10SYehuda Sadeh } 1866a40c4f10SYehuda Sadeh } 1867a40c4f10SYehuda Sadeh 1868a40c4f10SYehuda Sadeh return; 1869a40c4f10SYehuda Sadeh 1870a40c4f10SYehuda Sadeh done_err: 1871a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1872a40c4f10SYehuda Sadeh return; 1873a40c4f10SYehuda Sadeh 1874a40c4f10SYehuda Sadeh bad: 1875a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1876a40c4f10SYehuda Sadeh return; 1877a40c4f10SYehuda Sadeh } 1878a40c4f10SYehuda Sadeh 187970636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 188070636773SAlex Elder struct ceph_osd_data *osd_data) 188170636773SAlex Elder { 188270636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 188370636773SAlex Elder BUG_ON(osd_data->length > (u64) SIZE_MAX); 188470636773SAlex Elder if (osd_data->length) 188570636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 188670636773SAlex Elder osd_data->length, osd_data->alignment); 18879a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 18889a5e6d09SAlex Elder BUG_ON(!osd_data->pagelist->length); 18899a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 189070636773SAlex Elder #ifdef CONFIG_BLOCK 189170636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 1892a1930804SAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio, osd_data->bio_length); 189370636773SAlex Elder #endif 189470636773SAlex Elder } else { 189570636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 189670636773SAlex Elder } 189770636773SAlex Elder } 189870636773SAlex Elder 1899a40c4f10SYehuda Sadeh /* 19003d14c5d2SYehuda Sadeh * Register request, send initial attempt. 19013d14c5d2SYehuda Sadeh */ 19023d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 19033d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 19043d14c5d2SYehuda Sadeh bool nofail) 19053d14c5d2SYehuda Sadeh { 19063d14c5d2SYehuda Sadeh int rc = 0; 19073d14c5d2SYehuda Sadeh 190870636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 19090fff87ecSAlex Elder 191070636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 191170636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 19123d14c5d2SYehuda Sadeh 19133d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 19143d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1915dc4b870cSAlex Elder __register_request(osdc, req); 191692451b49SAlex Elder WARN_ON(req->r_sent); 191738d6453cSSage Weil rc = __map_request(osdc, req, 0); 19189d6fcb08SSage Weil if (rc < 0) { 19199d6fcb08SSage Weil if (nofail) { 19209d6fcb08SSage Weil dout("osdc_start_request failed map, " 19219d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 19229d6fcb08SSage Weil rc = 0; 19239d6fcb08SSage Weil } 1924234af26fSDan Carpenter goto out_unlock; 19259d6fcb08SSage Weil } 19266f6c7006SSage Weil if (req->r_osd == NULL) { 19276f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 19286f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 19296f6c7006SSage Weil } else { 19307e2766a1SAlex Elder __send_queued(osdc); 193156e925b6SSage Weil } 19323d14c5d2SYehuda Sadeh rc = 0; 1933234af26fSDan Carpenter out_unlock: 19343d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19353d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 19363d14c5d2SYehuda Sadeh return rc; 19373d14c5d2SYehuda Sadeh } 19383d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 19393d14c5d2SYehuda Sadeh 19403d14c5d2SYehuda Sadeh /* 19413d14c5d2SYehuda Sadeh * wait for a request to complete 19423d14c5d2SYehuda Sadeh */ 19433d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 19443d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 19453d14c5d2SYehuda Sadeh { 19463d14c5d2SYehuda Sadeh int rc; 19473d14c5d2SYehuda Sadeh 19483d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 19493d14c5d2SYehuda Sadeh if (rc < 0) { 19503d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19513d14c5d2SYehuda Sadeh __cancel_request(req); 19523d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19533d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 195425845472SSage Weil complete_request(req); 19553d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 19563d14c5d2SYehuda Sadeh return rc; 19573d14c5d2SYehuda Sadeh } 19583d14c5d2SYehuda Sadeh 19593d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 19603d14c5d2SYehuda Sadeh return req->r_result; 19613d14c5d2SYehuda Sadeh } 19623d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 19633d14c5d2SYehuda Sadeh 19643d14c5d2SYehuda Sadeh /* 19653d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 19663d14c5d2SYehuda Sadeh */ 19673d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 19683d14c5d2SYehuda Sadeh { 19693d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19703d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 19713d14c5d2SYehuda Sadeh 19723d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19733d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 19743d14c5d2SYehuda Sadeh while (1) { 19753d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 19763d14c5d2SYehuda Sadeh if (!req) 19773d14c5d2SYehuda Sadeh break; 19783d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 19793d14c5d2SYehuda Sadeh break; 19803d14c5d2SYehuda Sadeh 19813d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 19823d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 19833d14c5d2SYehuda Sadeh continue; 19843d14c5d2SYehuda Sadeh 19853d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 19863d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19873d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 19883d14c5d2SYehuda Sadeh req->r_tid, last_tid); 19893d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 19903d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19913d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19923d14c5d2SYehuda Sadeh } 19933d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19943d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 19953d14c5d2SYehuda Sadeh } 19963d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 19973d14c5d2SYehuda Sadeh 19983d14c5d2SYehuda Sadeh /* 19993d14c5d2SYehuda Sadeh * init, shutdown 20003d14c5d2SYehuda Sadeh */ 20013d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 20023d14c5d2SYehuda Sadeh { 20033d14c5d2SYehuda Sadeh int err; 20043d14c5d2SYehuda Sadeh 20053d14c5d2SYehuda Sadeh dout("init\n"); 20063d14c5d2SYehuda Sadeh osdc->client = client; 20073d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20083d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 20093d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 20103d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 20113d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 20123d14c5d2SYehuda Sadeh osdc->last_tid = 0; 20133d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 20143d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 20153d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 20163d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 20176f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 20186f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2019a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 20203d14c5d2SYehuda Sadeh osdc->num_requests = 0; 20213d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 20223d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2023a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2024a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2025a40c4f10SYehuda Sadeh osdc->event_count = 0; 20263d14c5d2SYehuda Sadeh 20273d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 20283d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 20293d14c5d2SYehuda Sadeh 20303d14c5d2SYehuda Sadeh err = -ENOMEM; 20313d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 20323d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 20333d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 20343d14c5d2SYehuda Sadeh goto out; 20353d14c5d2SYehuda Sadeh 2036d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2037d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 20383d14c5d2SYehuda Sadeh "osd_op"); 20393d14c5d2SYehuda Sadeh if (err < 0) 20403d14c5d2SYehuda Sadeh goto out_mempool; 2041d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 20423d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 20433d14c5d2SYehuda Sadeh "osd_op_reply"); 20443d14c5d2SYehuda Sadeh if (err < 0) 20453d14c5d2SYehuda Sadeh goto out_msgpool; 2046a40c4f10SYehuda Sadeh 2047a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2048a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 2049a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 2050a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 2051a40c4f10SYehuda Sadeh goto out_msgpool; 2052a40c4f10SYehuda Sadeh } 20533d14c5d2SYehuda Sadeh return 0; 20543d14c5d2SYehuda Sadeh 20553d14c5d2SYehuda Sadeh out_msgpool: 20563d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20573d14c5d2SYehuda Sadeh out_mempool: 20583d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20593d14c5d2SYehuda Sadeh out: 20603d14c5d2SYehuda Sadeh return err; 20613d14c5d2SYehuda Sadeh } 20623d14c5d2SYehuda Sadeh 20633d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 20643d14c5d2SYehuda Sadeh { 2065a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2066a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 20673d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 20683d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 20693d14c5d2SYehuda Sadeh if (osdc->osdmap) { 20703d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20713d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20723d14c5d2SYehuda Sadeh } 2073aca420bcSSage Weil remove_all_osds(osdc); 20743d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20753d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20763d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 20773d14c5d2SYehuda Sadeh } 20783d14c5d2SYehuda Sadeh 20793d14c5d2SYehuda Sadeh /* 20803d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 20813d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 20823d14c5d2SYehuda Sadeh */ 20833d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 20843d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 20853d14c5d2SYehuda Sadeh u64 off, u64 *plen, 20863d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2087b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 20883d14c5d2SYehuda Sadeh { 20893d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 2090acead002SAlex Elder struct ceph_osd_req_op op; 20913d14c5d2SYehuda Sadeh int rc = 0; 20923d14c5d2SYehuda Sadeh 20933d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 20943d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2095acead002SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, &op, 20963d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2097acead002SAlex Elder NULL, truncate_seq, truncate_size, 2098153e5167SAlex Elder false); 20996816282dSSage Weil if (IS_ERR(req)) 21006816282dSSage Weil return PTR_ERR(req); 21013d14c5d2SYehuda Sadeh 21023d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 21030fff87ecSAlex Elder 210443bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align, 210543bfe5deSAlex Elder false, false); 21063d14c5d2SYehuda Sadeh 2107e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 210843bfe5deSAlex Elder off, *plen, *plen, page_align); 21093d14c5d2SYehuda Sadeh 211002ee07d3SAlex Elder ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL); 211102ee07d3SAlex Elder 21123d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 21133d14c5d2SYehuda Sadeh if (!rc) 21143d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21153d14c5d2SYehuda Sadeh 21163d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21173d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 21183d14c5d2SYehuda Sadeh return rc; 21193d14c5d2SYehuda Sadeh } 21203d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 21213d14c5d2SYehuda Sadeh 21223d14c5d2SYehuda Sadeh /* 21233d14c5d2SYehuda Sadeh * do a synchronous write on N pages 21243d14c5d2SYehuda Sadeh */ 21253d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 21263d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 21273d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 21283d14c5d2SYehuda Sadeh u64 off, u64 len, 21293d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 21303d14c5d2SYehuda Sadeh struct timespec *mtime, 213124808826SAlex Elder struct page **pages, int num_pages) 21323d14c5d2SYehuda Sadeh { 21333d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 2134acead002SAlex Elder struct ceph_osd_req_op op; 21353d14c5d2SYehuda Sadeh int rc = 0; 2136b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 21373d14c5d2SYehuda Sadeh 2138acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2139acead002SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, &op, 21403d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 214124808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2142acead002SAlex Elder snapc, truncate_seq, truncate_size, 2143153e5167SAlex Elder true); 21446816282dSSage Weil if (IS_ERR(req)) 21456816282dSSage Weil return PTR_ERR(req); 21463d14c5d2SYehuda Sadeh 21473d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 214843bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align, 214943bfe5deSAlex Elder false, false); 215043bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 21513d14c5d2SYehuda Sadeh 215202ee07d3SAlex Elder ceph_osdc_build_request(req, off, 1, &op, snapc, CEPH_NOSNAP, mtime); 215302ee07d3SAlex Elder 215487f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 21553d14c5d2SYehuda Sadeh if (!rc) 21563d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21573d14c5d2SYehuda Sadeh 21583d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21593d14c5d2SYehuda Sadeh if (rc == 0) 21603d14c5d2SYehuda Sadeh rc = len; 21613d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 21623d14c5d2SYehuda Sadeh return rc; 21633d14c5d2SYehuda Sadeh } 21643d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 21653d14c5d2SYehuda Sadeh 21663d14c5d2SYehuda Sadeh /* 21673d14c5d2SYehuda Sadeh * handle incoming message 21683d14c5d2SYehuda Sadeh */ 21693d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 21703d14c5d2SYehuda Sadeh { 21713d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21723d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 21733d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 21743d14c5d2SYehuda Sadeh 21753d14c5d2SYehuda Sadeh if (!osd) 21763d14c5d2SYehuda Sadeh goto out; 21773d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 21783d14c5d2SYehuda Sadeh 21793d14c5d2SYehuda Sadeh switch (type) { 21803d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 21813d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 21823d14c5d2SYehuda Sadeh break; 21833d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21843d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 21853d14c5d2SYehuda Sadeh break; 2186a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2187a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2188a40c4f10SYehuda Sadeh break; 21893d14c5d2SYehuda Sadeh 21903d14c5d2SYehuda Sadeh default: 21913d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 21923d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 21933d14c5d2SYehuda Sadeh } 21943d14c5d2SYehuda Sadeh out: 21953d14c5d2SYehuda Sadeh ceph_msg_put(msg); 21963d14c5d2SYehuda Sadeh } 21973d14c5d2SYehuda Sadeh 21983d14c5d2SYehuda Sadeh /* 21993d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 22003d14c5d2SYehuda Sadeh * pages. 22013d14c5d2SYehuda Sadeh */ 22023d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 22033d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22043d14c5d2SYehuda Sadeh int *skip) 22053d14c5d2SYehuda Sadeh { 22063d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22073d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 22083d14c5d2SYehuda Sadeh struct ceph_msg *m; 22093d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 22103d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22113d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 22123d14c5d2SYehuda Sadeh u64 tid; 22133d14c5d2SYehuda Sadeh 22143d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 22153d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22163d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 22173d14c5d2SYehuda Sadeh if (!req) { 22183d14c5d2SYehuda Sadeh *skip = 1; 22193d14c5d2SYehuda Sadeh m = NULL; 2220756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 22213d14c5d2SYehuda Sadeh osd->o_osd); 22223d14c5d2SYehuda Sadeh goto out; 22233d14c5d2SYehuda Sadeh } 22243d14c5d2SYehuda Sadeh 2225ace6d3a9SAlex Elder if (req->r_reply->con) 22268921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2227ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 22288921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 22293d14c5d2SYehuda Sadeh 22303d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 22313d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 22323d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2233b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 22343d14c5d2SYehuda Sadeh if (!m) 22353d14c5d2SYehuda Sadeh goto out; 22363d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 22373d14c5d2SYehuda Sadeh req->r_reply = m; 22383d14c5d2SYehuda Sadeh } 22393d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 22403d14c5d2SYehuda Sadeh 22413d14c5d2SYehuda Sadeh if (data_len > 0) { 22420fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 22430fff87ecSAlex Elder 22440fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 22450fff87ecSAlex Elder if (osd_data->pages && 2246e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 22472ac2b7a6SAlex Elder 2248e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2249e0c59487SAlex Elder "we had only %llu bytes ready\n", 2250e0c59487SAlex Elder tid, data_len, osd_data->length); 22513d14c5d2SYehuda Sadeh *skip = 1; 22523d14c5d2SYehuda Sadeh ceph_msg_put(m); 22533d14c5d2SYehuda Sadeh m = NULL; 22543d14c5d2SYehuda Sadeh goto out; 22553d14c5d2SYehuda Sadeh } 22563d14c5d2SYehuda Sadeh } 22572ac2b7a6SAlex Elder } 22583d14c5d2SYehuda Sadeh *skip = 0; 22593d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 22603d14c5d2SYehuda Sadeh 22613d14c5d2SYehuda Sadeh out: 22623d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22633d14c5d2SYehuda Sadeh return m; 22643d14c5d2SYehuda Sadeh 22653d14c5d2SYehuda Sadeh } 22663d14c5d2SYehuda Sadeh 22673d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 22683d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22693d14c5d2SYehuda Sadeh int *skip) 22703d14c5d2SYehuda Sadeh { 22713d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22723d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 22733d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22743d14c5d2SYehuda Sadeh 22751c20f2d2SAlex Elder *skip = 0; 22763d14c5d2SYehuda Sadeh switch (type) { 22773d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2278a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2279b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 22803d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22813d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 22823d14c5d2SYehuda Sadeh default: 22833d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 22843d14c5d2SYehuda Sadeh osd->o_osd); 22853d14c5d2SYehuda Sadeh *skip = 1; 22863d14c5d2SYehuda Sadeh return NULL; 22873d14c5d2SYehuda Sadeh } 22883d14c5d2SYehuda Sadeh } 22893d14c5d2SYehuda Sadeh 22903d14c5d2SYehuda Sadeh /* 22913d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 22923d14c5d2SYehuda Sadeh */ 22933d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 22943d14c5d2SYehuda Sadeh { 22953d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22963d14c5d2SYehuda Sadeh if (get_osd(osd)) 22973d14c5d2SYehuda Sadeh return con; 22983d14c5d2SYehuda Sadeh return NULL; 22993d14c5d2SYehuda Sadeh } 23003d14c5d2SYehuda Sadeh 23013d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 23023d14c5d2SYehuda Sadeh { 23033d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23043d14c5d2SYehuda Sadeh put_osd(osd); 23053d14c5d2SYehuda Sadeh } 23063d14c5d2SYehuda Sadeh 23073d14c5d2SYehuda Sadeh /* 23083d14c5d2SYehuda Sadeh * authentication 23093d14c5d2SYehuda Sadeh */ 2310a3530df3SAlex Elder /* 2311a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2312a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2313a3530df3SAlex Elder */ 2314a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 23158f43fb53SAlex Elder int *proto, int force_new) 23163d14c5d2SYehuda Sadeh { 23173d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23183d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23193d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 232074f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 23213d14c5d2SYehuda Sadeh 232274f1869fSAlex Elder if (force_new && auth->authorizer) { 232327859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 232474f1869fSAlex Elder auth->authorizer = NULL; 23253d14c5d2SYehuda Sadeh } 232627859f97SSage Weil if (!auth->authorizer) { 232727859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2328a3530df3SAlex Elder auth); 23293d14c5d2SYehuda Sadeh if (ret) 2330a3530df3SAlex Elder return ERR_PTR(ret); 233127859f97SSage Weil } else { 233227859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 23330bed9b5cSSage Weil auth); 23340bed9b5cSSage Weil if (ret) 23350bed9b5cSSage Weil return ERR_PTR(ret); 23363d14c5d2SYehuda Sadeh } 23373d14c5d2SYehuda Sadeh *proto = ac->protocol; 233874f1869fSAlex Elder 2339a3530df3SAlex Elder return auth; 23403d14c5d2SYehuda Sadeh } 23413d14c5d2SYehuda Sadeh 23423d14c5d2SYehuda Sadeh 23433d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 23443d14c5d2SYehuda Sadeh { 23453d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23463d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23473d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23483d14c5d2SYehuda Sadeh 234927859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 23503d14c5d2SYehuda Sadeh } 23513d14c5d2SYehuda Sadeh 23523d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 23533d14c5d2SYehuda Sadeh { 23543d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23553d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23563d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23573d14c5d2SYehuda Sadeh 235827859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 23593d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 23603d14c5d2SYehuda Sadeh } 23613d14c5d2SYehuda Sadeh 23623d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 23633d14c5d2SYehuda Sadeh .get = get_osd_con, 23643d14c5d2SYehuda Sadeh .put = put_osd_con, 23653d14c5d2SYehuda Sadeh .dispatch = dispatch, 23663d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 23673d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 23683d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 23693d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 23703d14c5d2SYehuda Sadeh .fault = osd_reset, 23713d14c5d2SYehuda Sadeh }; 2372