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 static int op_has_extent(int op) 363d14c5d2SYehuda Sadeh { 373d14c5d2SYehuda Sadeh return (op == CEPH_OSD_OP_READ || 383d14c5d2SYehuda Sadeh op == CEPH_OSD_OP_WRITE); 393d14c5d2SYehuda Sadeh } 403d14c5d2SYehuda Sadeh 413d14c5d2SYehuda Sadeh /* 423d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 453d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 463d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 473d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 483d14c5d2SYehuda Sadeh * access to storage. 493d14c5d2SYehuda Sadeh * 503d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 513d14c5d2SYehuda Sadeh * are described by the osd map. 523d14c5d2SYehuda Sadeh * 533d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 543d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 553d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 563d14c5d2SYehuda Sadeh * channel with an OSD is reset. 573d14c5d2SYehuda Sadeh */ 583d14c5d2SYehuda Sadeh 593d14c5d2SYehuda Sadeh /* 603d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 613d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 623d14c5d2SYehuda Sadeh * object boundary. 633d14c5d2SYehuda Sadeh * 643d14c5d2SYehuda Sadeh * fill osd op in request message. 653d14c5d2SYehuda Sadeh */ 66dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 6747a05811SAlex Elder struct ceph_osd_req_op *op, u64 *bno) 683d14c5d2SYehuda Sadeh { 6960e56f13SAlex Elder u64 orig_len = *plen; 7060e56f13SAlex Elder u64 objoff = 0; 7160e56f13SAlex Elder u64 objlen = 0; 72d63b77f4SSage Weil int r; 733d14c5d2SYehuda Sadeh 7460e56f13SAlex Elder /* object extent? */ 7547a05811SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, bno, 7660e56f13SAlex Elder &objoff, &objlen); 77d63b77f4SSage Weil if (r < 0) 78d63b77f4SSage Weil return r; 7960e56f13SAlex Elder if (objlen < orig_len) { 8060e56f13SAlex Elder *plen = objlen; 8160e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 8260e56f13SAlex Elder orig_len - *plen, off, *plen); 8360e56f13SAlex Elder } 8460e56f13SAlex Elder 8560e56f13SAlex Elder if (op_has_extent(op->op)) { 8660e56f13SAlex Elder u32 osize = le32_to_cpu(layout->fl_object_size); 8760e56f13SAlex Elder op->extent.offset = objoff; 8860e56f13SAlex Elder op->extent.length = objlen; 8960e56f13SAlex Elder if (op->extent.truncate_size <= off - objoff) { 9060e56f13SAlex Elder op->extent.truncate_size = 0; 9160e56f13SAlex Elder } else { 9260e56f13SAlex Elder op->extent.truncate_size -= off - objoff; 9360e56f13SAlex Elder if (op->extent.truncate_size > osize) 9460e56f13SAlex Elder op->extent.truncate_size = osize; 9560e56f13SAlex Elder } 9660e56f13SAlex Elder } 9760e56f13SAlex Elder if (op->op == CEPH_OSD_OP_WRITE) 9860e56f13SAlex Elder op->payload_len = *plen; 9960e56f13SAlex Elder 10060cf5992SAlex Elder dout("calc_layout bno=%llx %llu~%llu\n", *bno, objoff, objlen); 1013d14c5d2SYehuda Sadeh 1023ff5f385SAlex Elder return 0; 1033d14c5d2SYehuda Sadeh } 1043d14c5d2SYehuda Sadeh 1053d14c5d2SYehuda Sadeh /* 1063d14c5d2SYehuda Sadeh * requests 1073d14c5d2SYehuda Sadeh */ 1083d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1093d14c5d2SYehuda Sadeh { 110e0c59487SAlex Elder int num_pages; 1113d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 1123d14c5d2SYehuda Sadeh struct ceph_osd_request, 1133d14c5d2SYehuda Sadeh r_kref); 1143d14c5d2SYehuda Sadeh 1153d14c5d2SYehuda Sadeh if (req->r_request) 1163d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 1173d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 1189cbb1d72SAlex Elder dout("%s revoking msg %p from con %p\n", __func__, 1199cbb1d72SAlex Elder req->r_reply, req->r_con_filling_msg); 1208921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 1210d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 1229cbb1d72SAlex Elder req->r_con_filling_msg = NULL; 1233d14c5d2SYehuda Sadeh } 124ab8cb34aSAlex Elder if (req->r_reply) 125ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 1260fff87ecSAlex Elder 1270fff87ecSAlex Elder if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES && 128e0c59487SAlex Elder req->r_data_in.own_pages) { 129e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_in.alignment, 130e0c59487SAlex Elder (u64)req->r_data_in.length); 131e0c59487SAlex Elder ceph_release_page_vector(req->r_data_in.pages, num_pages); 132e0c59487SAlex Elder } 1330fff87ecSAlex Elder if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES && 134e0c59487SAlex Elder req->r_data_out.own_pages) { 135e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_out.alignment, 136e0c59487SAlex Elder (u64)req->r_data_out.length); 137e0c59487SAlex Elder ceph_release_page_vector(req->r_data_out.pages, num_pages); 138e0c59487SAlex Elder } 1390fff87ecSAlex Elder 1403d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1413d14c5d2SYehuda Sadeh if (req->r_mempool) 1423d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1433d14c5d2SYehuda Sadeh else 1443d14c5d2SYehuda Sadeh kfree(req); 1453d14c5d2SYehuda Sadeh } 1463d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1473d14c5d2SYehuda Sadeh 1483d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1493d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1501b83bef2SSage Weil unsigned int num_ops, 1513d14c5d2SYehuda Sadeh bool use_mempool, 15254a54007SAlex Elder gfp_t gfp_flags) 1533d14c5d2SYehuda Sadeh { 1543d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1553d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1561b83bef2SSage Weil size_t msg_size; 1573d14c5d2SYehuda Sadeh 1581b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1591b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1601b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1611b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1621b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1631b83bef2SSage Weil msg_size += 8; /* snapid */ 1641b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1651b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1661b83bef2SSage Weil msg_size += 4; 1673d14c5d2SYehuda Sadeh 1683d14c5d2SYehuda Sadeh if (use_mempool) { 1693d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1703d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1713d14c5d2SYehuda Sadeh } else { 1723d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1733d14c5d2SYehuda Sadeh } 1743d14c5d2SYehuda Sadeh if (req == NULL) 1753d14c5d2SYehuda Sadeh return NULL; 1763d14c5d2SYehuda Sadeh 1773d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1783d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1793d14c5d2SYehuda Sadeh 1803d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1813d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1823d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 183a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1843d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 185a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 186a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 187935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 188cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 189cd43045cSSage Weil 1903d14c5d2SYehuda Sadeh /* create reply message */ 1913d14c5d2SYehuda Sadeh if (use_mempool) 1923d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 1933d14c5d2SYehuda Sadeh else 1943d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 195b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 1963d14c5d2SYehuda Sadeh if (!msg) { 1973d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1983d14c5d2SYehuda Sadeh return NULL; 1993d14c5d2SYehuda Sadeh } 2003d14c5d2SYehuda Sadeh req->r_reply = msg; 2013d14c5d2SYehuda Sadeh 2020fff87ecSAlex Elder req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE; 2030fff87ecSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE; 204d50b409fSSage Weil 2053d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2063d14c5d2SYehuda Sadeh if (use_mempool) 2073d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2083d14c5d2SYehuda Sadeh else 209b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2103d14c5d2SYehuda Sadeh if (!msg) { 2113d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2123d14c5d2SYehuda Sadeh return NULL; 2133d14c5d2SYehuda Sadeh } 2143d14c5d2SYehuda Sadeh 2153d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2163d14c5d2SYehuda Sadeh 2173d14c5d2SYehuda Sadeh req->r_request = msg; 2183d14c5d2SYehuda Sadeh 2193d14c5d2SYehuda Sadeh return req; 2203d14c5d2SYehuda Sadeh } 2213d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2223d14c5d2SYehuda Sadeh 223a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 224a8dd0a37SAlex Elder { 225a8dd0a37SAlex Elder switch (opcode) { 226a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 227a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 228a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 229a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 230a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 231a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 232a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 233a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 234a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 235a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 236a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 237a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 238a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 239a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 240a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 241a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 242a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 243a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 244a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 245a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 246a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 247a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 248a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 249a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 250a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 251a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 252a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 253a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 254a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 255a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 256a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 257a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 258a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 259a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 260a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 261a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 262a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 263a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 264a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 265a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 266a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 267a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 268a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 269a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 270a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 271a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 272a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 273a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 274a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 275a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 276a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 277a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 278a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 279a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 280a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 281a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 282a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 283a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 284a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 285a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 286a8dd0a37SAlex Elder return true; 287a8dd0a37SAlex Elder default: 288a8dd0a37SAlex Elder return false; 289a8dd0a37SAlex Elder } 290a8dd0a37SAlex Elder } 291a8dd0a37SAlex Elder 292175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 2933d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 2943d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 2953d14c5d2SYehuda Sadeh { 296175face2SAlex Elder u64 out_data_len = 0; 29795e072ebSAlex Elder struct ceph_pagelist *pagelist; 298175face2SAlex Elder 299a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 300a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 301a8dd0a37SAlex Elder 302a8dd0a37SAlex Elder return 0; 303a8dd0a37SAlex Elder } 3043d14c5d2SYehuda Sadeh 305065a68f9SAlex Elder switch (src->op) { 306fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 307fbfab539SAlex Elder break; 3083d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 3093d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 310175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 311175face2SAlex Elder out_data_len = src->extent.length; 312175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 313175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 3143d14c5d2SYehuda Sadeh dst->extent.truncate_size = 3153d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 3163d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 3173d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 3183d14c5d2SYehuda Sadeh break; 3193d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 32095e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 32195e072ebSAlex Elder BUG_ON(!pagelist); 32295e072ebSAlex Elder ceph_pagelist_init(pagelist); 32395e072ebSAlex Elder 3243d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 3253d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 3263d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 32795e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 3283d14c5d2SYehuda Sadeh src->cls.class_len); 32995e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 3303d14c5d2SYehuda Sadeh src->cls.method_len); 33195e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.indata, 3323d14c5d2SYehuda Sadeh src->cls.indata_len); 33395e072ebSAlex Elder 33495e072ebSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST; 33595e072ebSAlex Elder req->r_data_out.pagelist = pagelist; 33695e072ebSAlex Elder out_data_len = pagelist->length; 3373d14c5d2SYehuda Sadeh break; 3383d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 3393d14c5d2SYehuda Sadeh break; 340a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 341a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 342a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 343a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 344a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 345a40c4f10SYehuda Sadeh break; 3463d14c5d2SYehuda Sadeh default: 3474c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 3488f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 3494c46459cSAlex Elder WARN_ON(1); 350a8dd0a37SAlex Elder 351a8dd0a37SAlex Elder return 0; 3523d14c5d2SYehuda Sadeh } 353a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 3543d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 355175face2SAlex Elder 356175face2SAlex Elder return out_data_len; 3573d14c5d2SYehuda Sadeh } 3583d14c5d2SYehuda Sadeh 3593d14c5d2SYehuda Sadeh /* 3603d14c5d2SYehuda Sadeh * build new request AND message 3613d14c5d2SYehuda Sadeh * 3623d14c5d2SYehuda Sadeh */ 3633d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 364175face2SAlex Elder u64 off, unsigned int num_ops, 3653d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 3664d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 367af77f26cSAlex Elder struct timespec *mtime) 3683d14c5d2SYehuda Sadeh { 3693d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 3703d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 3713d14c5d2SYehuda Sadeh void *p; 3721b83bef2SSage Weil size_t msg_size; 3733d14c5d2SYehuda Sadeh int flags = req->r_flags; 374f44246e3SAlex Elder u64 data_len; 3753d14c5d2SYehuda Sadeh int i; 3763d14c5d2SYehuda Sadeh 3771b83bef2SSage Weil req->r_num_ops = num_ops; 3781b83bef2SSage Weil req->r_snapid = snap_id; 3793d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 3803d14c5d2SYehuda Sadeh 3811b83bef2SSage Weil /* encode request */ 3821b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 3833d14c5d2SYehuda Sadeh 3841b83bef2SSage Weil p = msg->front.iov_base; 3851b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 3861b83bef2SSage Weil req->r_request_osdmap_epoch = p; 3871b83bef2SSage Weil p += 4; 3881b83bef2SSage Weil req->r_request_flags = p; 3891b83bef2SSage Weil p += 4; 3901b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 3911b83bef2SSage Weil ceph_encode_timespec(p, mtime); 3921b83bef2SSage Weil p += sizeof(struct ceph_timespec); 3931b83bef2SSage Weil req->r_request_reassert_version = p; 3941b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 3951b83bef2SSage Weil 3961b83bef2SSage Weil /* oloc */ 3971b83bef2SSage Weil ceph_encode_8(&p, 4); 3981b83bef2SSage Weil ceph_encode_8(&p, 4); 3991b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 4001b83bef2SSage Weil req->r_request_pool = p; 4011b83bef2SSage Weil p += 8; 4021b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4031b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 4041b83bef2SSage Weil 4051b83bef2SSage Weil ceph_encode_8(&p, 1); 4061b83bef2SSage Weil req->r_request_pgid = p; 4071b83bef2SSage Weil p += 8 + 4; 4081b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4091b83bef2SSage Weil 4101b83bef2SSage Weil /* oid */ 4111b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 412af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 4131b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 414af77f26cSAlex Elder p += req->r_oid_len; 4153d14c5d2SYehuda Sadeh 416175face2SAlex Elder /* ops--can imply data */ 4171b83bef2SSage Weil ceph_encode_16(&p, num_ops); 4183d14c5d2SYehuda Sadeh src_op = src_ops; 4191b83bef2SSage Weil req->r_request_ops = p; 420175face2SAlex Elder data_len = 0; 4211b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 422175face2SAlex Elder data_len += osd_req_encode_op(req, p, src_op); 4231b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 4241b83bef2SSage Weil } 4253d14c5d2SYehuda Sadeh 4261b83bef2SSage Weil /* snaps */ 4271b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 4281b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 4291b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 4301b83bef2SSage Weil if (req->r_snapc) { 4313d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 4321b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 4333d14c5d2SYehuda Sadeh } 4343d14c5d2SYehuda Sadeh } 4353d14c5d2SYehuda Sadeh 4361b83bef2SSage Weil req->r_request_attempts = p; 4371b83bef2SSage Weil p += 4; 4381b83bef2SSage Weil 439175face2SAlex Elder /* data */ 4400baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 4410baa1bd9SAlex Elder u16 data_off; 4420baa1bd9SAlex Elder 4430baa1bd9SAlex Elder /* 4440baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 4450baa1bd9SAlex Elder * allowing it to align received data into its 4460baa1bd9SAlex Elder * buffers such that there's no need to re-copy 4470baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 4480baa1bd9SAlex Elder */ 4490baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 4500baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 4510baa1bd9SAlex Elder } 452f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 453c5c6b19dSSage Weil 4543d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 4553d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 4563d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 4573d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 4581b83bef2SSage Weil 4591b83bef2SSage Weil dout("build_request msg_size was %d num_ops %d\n", (int)msg_size, 4601b83bef2SSage Weil num_ops); 4613d14c5d2SYehuda Sadeh return; 4623d14c5d2SYehuda Sadeh } 4633d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 4643d14c5d2SYehuda Sadeh 4653d14c5d2SYehuda Sadeh /* 4663d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 4673d14c5d2SYehuda Sadeh * extent as needed. 4683d14c5d2SYehuda Sadeh * 4693d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 4703d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 4713d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 4723d14c5d2SYehuda Sadeh * 4733d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 4743d14c5d2SYehuda Sadeh * data quickly. 4753d14c5d2SYehuda Sadeh */ 4763d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 4773d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 4783d14c5d2SYehuda Sadeh struct ceph_vino vino, 4793d14c5d2SYehuda Sadeh u64 off, u64 *plen, 4803d14c5d2SYehuda Sadeh int opcode, int flags, 4813d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 4823d14c5d2SYehuda Sadeh int do_sync, 4833d14c5d2SYehuda Sadeh u32 truncate_seq, 4843d14c5d2SYehuda Sadeh u64 truncate_size, 4853d14c5d2SYehuda Sadeh struct timespec *mtime, 486153e5167SAlex Elder bool use_mempool) 4873d14c5d2SYehuda Sadeh { 488ae7ca4a3SAlex Elder struct ceph_osd_req_op ops[2]; 4893d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 490ae7ca4a3SAlex Elder unsigned int num_op = 1; 49147a05811SAlex Elder u64 bno = 0; 4926816282dSSage Weil int r; 4933d14c5d2SYehuda Sadeh 494ae7ca4a3SAlex Elder memset(&ops, 0, sizeof ops); 495ae7ca4a3SAlex Elder 4963d14c5d2SYehuda Sadeh ops[0].op = opcode; 4973d14c5d2SYehuda Sadeh ops[0].extent.truncate_seq = truncate_seq; 4983d14c5d2SYehuda Sadeh ops[0].extent.truncate_size = truncate_size; 4993d14c5d2SYehuda Sadeh 5003d14c5d2SYehuda Sadeh if (do_sync) { 5013d14c5d2SYehuda Sadeh ops[1].op = CEPH_OSD_OP_STARTSYNC; 502ae7ca4a3SAlex Elder num_op++; 503ae7ca4a3SAlex Elder } 5043d14c5d2SYehuda Sadeh 505ae7ca4a3SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool, 506ae7ca4a3SAlex Elder GFP_NOFS); 5074ad12621SSage Weil if (!req) 5086816282dSSage Weil return ERR_PTR(-ENOMEM); 509d178a9e7SAlex Elder req->r_flags = flags; 5103d14c5d2SYehuda Sadeh 5113d14c5d2SYehuda Sadeh /* calculate max write size */ 51260cf5992SAlex Elder r = calc_layout(layout, off, plen, ops, &bno); 5133ff5f385SAlex Elder if (r < 0) { 5143ff5f385SAlex Elder ceph_osdc_put_request(req); 5156816282dSSage Weil return ERR_PTR(r); 5163ff5f385SAlex Elder } 5173d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 5183d14c5d2SYehuda Sadeh 519dbe0fc41SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); 520dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 521dbe0fc41SAlex Elder 522175face2SAlex Elder ceph_osdc_build_request(req, off, num_op, ops, 523ae7ca4a3SAlex Elder snapc, vino.snap, mtime); 5243d14c5d2SYehuda Sadeh 5253d14c5d2SYehuda Sadeh return req; 5263d14c5d2SYehuda Sadeh } 5273d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 5283d14c5d2SYehuda Sadeh 5293d14c5d2SYehuda Sadeh /* 5303d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 5313d14c5d2SYehuda Sadeh */ 5323d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 5333d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 5343d14c5d2SYehuda Sadeh { 5353d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 5363d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 5373d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 5383d14c5d2SYehuda Sadeh 5393d14c5d2SYehuda Sadeh while (*p) { 5403d14c5d2SYehuda Sadeh parent = *p; 5413d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 5423d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 5433d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 5443d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 5453d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 5463d14c5d2SYehuda Sadeh else 5473d14c5d2SYehuda Sadeh BUG(); 5483d14c5d2SYehuda Sadeh } 5493d14c5d2SYehuda Sadeh 5503d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 5513d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 5523d14c5d2SYehuda Sadeh } 5533d14c5d2SYehuda Sadeh 5543d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 5553d14c5d2SYehuda Sadeh u64 tid) 5563d14c5d2SYehuda Sadeh { 5573d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5583d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5593d14c5d2SYehuda Sadeh 5603d14c5d2SYehuda Sadeh while (n) { 5613d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5623d14c5d2SYehuda Sadeh if (tid < req->r_tid) 5633d14c5d2SYehuda Sadeh n = n->rb_left; 5643d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 5653d14c5d2SYehuda Sadeh n = n->rb_right; 5663d14c5d2SYehuda Sadeh else 5673d14c5d2SYehuda Sadeh return req; 5683d14c5d2SYehuda Sadeh } 5693d14c5d2SYehuda Sadeh return NULL; 5703d14c5d2SYehuda Sadeh } 5713d14c5d2SYehuda Sadeh 5723d14c5d2SYehuda Sadeh static struct ceph_osd_request * 5733d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 5743d14c5d2SYehuda Sadeh u64 tid) 5753d14c5d2SYehuda Sadeh { 5763d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5773d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5783d14c5d2SYehuda Sadeh 5793d14c5d2SYehuda Sadeh while (n) { 5803d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5813d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 5823d14c5d2SYehuda Sadeh if (!n->rb_left) 5833d14c5d2SYehuda Sadeh return req; 5843d14c5d2SYehuda Sadeh n = n->rb_left; 5853d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 5863d14c5d2SYehuda Sadeh n = n->rb_right; 5873d14c5d2SYehuda Sadeh } else { 5883d14c5d2SYehuda Sadeh return req; 5893d14c5d2SYehuda Sadeh } 5903d14c5d2SYehuda Sadeh } 5913d14c5d2SYehuda Sadeh return NULL; 5923d14c5d2SYehuda Sadeh } 5933d14c5d2SYehuda Sadeh 5946f6c7006SSage Weil /* 5956f6c7006SSage Weil * Resubmit requests pending on the given osd. 5966f6c7006SSage Weil */ 5976f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 5986f6c7006SSage Weil struct ceph_osd *osd) 5996f6c7006SSage Weil { 600a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 601e02493c0SAlex Elder LIST_HEAD(resend); 6026f6c7006SSage Weil int err; 6036f6c7006SSage Weil 6046f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 6056f6c7006SSage Weil err = __reset_osd(osdc, osd); 606685a7555SAlex Elder if (err) 6076f6c7006SSage Weil return; 608e02493c0SAlex Elder /* 609e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 610e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 611e02493c0SAlex Elder * sent in tid order, and that is also the order they're 612e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 613e02493c0SAlex Elder * flight will be found first, followed by all requests that 614e02493c0SAlex Elder * have not yet been sent. And to resend requests while 615e02493c0SAlex Elder * preserving this order we will want to put any sent 616e02493c0SAlex Elder * requests back on the front of the osd client's unsent 617e02493c0SAlex Elder * list. 618e02493c0SAlex Elder * 619e02493c0SAlex Elder * So we build a separate ordered list of already-sent 620e02493c0SAlex Elder * requests for the affected osd and splice it onto the 621e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 622e02493c0SAlex Elder * request that has not yet been sent we're done. Those 623e02493c0SAlex Elder * requests are already sitting right where they belong. 624e02493c0SAlex Elder */ 6256f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 626e02493c0SAlex Elder if (!req->r_sent) 627e02493c0SAlex Elder break; 628e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 629e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 6306f6c7006SSage Weil osd->o_osd); 631a40c4f10SYehuda Sadeh if (!req->r_linger) 6326f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 6336f6c7006SSage Weil } 634e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 635a40c4f10SYehuda Sadeh 636e02493c0SAlex Elder /* 637e02493c0SAlex Elder * Linger requests are re-registered before sending, which 638e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 639e02493c0SAlex Elder * list at the end to keep things in tid order. 640e02493c0SAlex Elder */ 641a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 642a40c4f10SYehuda Sadeh r_linger_osd) { 64377f38e0eSSage Weil /* 64477f38e0eSSage Weil * reregister request prior to unregistering linger so 64577f38e0eSSage Weil * that r_osd is preserved. 64677f38e0eSSage Weil */ 64777f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 648a40c4f10SYehuda Sadeh __register_request(osdc, req); 649e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 650ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 65177f38e0eSSage Weil __unregister_linger_request(osdc, req); 652a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 653a40c4f10SYehuda Sadeh osd->o_osd); 654a40c4f10SYehuda Sadeh } 6556f6c7006SSage Weil } 6566f6c7006SSage Weil 6573d14c5d2SYehuda Sadeh /* 6583d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 6593d14c5d2SYehuda Sadeh */ 6603d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 6613d14c5d2SYehuda Sadeh { 6623d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 6633d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 6643d14c5d2SYehuda Sadeh 6653d14c5d2SYehuda Sadeh if (!osd) 6663d14c5d2SYehuda Sadeh return; 6673d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 6683d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 6693d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 67083aff95eSSage Weil mutex_lock(&osdc->request_mutex); 67183aff95eSSage Weil __kick_osd_requests(osdc, osd); 672f9d25199SAlex Elder __send_queued(osdc); 67383aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 6743d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 6753d14c5d2SYehuda Sadeh } 6763d14c5d2SYehuda Sadeh 6773d14c5d2SYehuda Sadeh /* 6783d14c5d2SYehuda Sadeh * Track open sessions with osds. 6793d14c5d2SYehuda Sadeh */ 680e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 6813d14c5d2SYehuda Sadeh { 6823d14c5d2SYehuda Sadeh struct ceph_osd *osd; 6833d14c5d2SYehuda Sadeh 6843d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 6853d14c5d2SYehuda Sadeh if (!osd) 6863d14c5d2SYehuda Sadeh return NULL; 6873d14c5d2SYehuda Sadeh 6883d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 6893d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 690e10006f8SAlex Elder osd->o_osd = onum; 691f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 6923d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 693a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 6943d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 6953d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 6963d14c5d2SYehuda Sadeh 697b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 6983d14c5d2SYehuda Sadeh 6993d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 7003d14c5d2SYehuda Sadeh return osd; 7013d14c5d2SYehuda Sadeh } 7023d14c5d2SYehuda Sadeh 7033d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 7043d14c5d2SYehuda Sadeh { 7053d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 7063d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 7073d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 7083d14c5d2SYehuda Sadeh return osd; 7093d14c5d2SYehuda Sadeh } else { 7103d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 7113d14c5d2SYehuda Sadeh return NULL; 7123d14c5d2SYehuda Sadeh } 7133d14c5d2SYehuda Sadeh } 7143d14c5d2SYehuda Sadeh 7153d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 7163d14c5d2SYehuda Sadeh { 7173d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 7183d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 719a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 7203d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 7213d14c5d2SYehuda Sadeh 72227859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 7233d14c5d2SYehuda Sadeh kfree(osd); 7243d14c5d2SYehuda Sadeh } 7253d14c5d2SYehuda Sadeh } 7263d14c5d2SYehuda Sadeh 7273d14c5d2SYehuda Sadeh /* 7283d14c5d2SYehuda Sadeh * remove an osd from our map 7293d14c5d2SYehuda Sadeh */ 7303d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 7313d14c5d2SYehuda Sadeh { 7323d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 7333d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 7343d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 7353d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 7363d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 7373d14c5d2SYehuda Sadeh put_osd(osd); 7383d14c5d2SYehuda Sadeh } 7393d14c5d2SYehuda Sadeh 740aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 741aca420bcSSage Weil { 742048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 743aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 744aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 745aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 746aca420bcSSage Weil struct ceph_osd, o_node); 747aca420bcSSage Weil __remove_osd(osdc, osd); 748aca420bcSSage Weil } 749aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 750aca420bcSSage Weil } 751aca420bcSSage Weil 7523d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 7533d14c5d2SYehuda Sadeh struct ceph_osd *osd) 7543d14c5d2SYehuda Sadeh { 7553d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 7563d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 7573d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 7583d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 7593d14c5d2SYehuda Sadeh } 7603d14c5d2SYehuda Sadeh 7613d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 7623d14c5d2SYehuda Sadeh { 7633d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 7643d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 7653d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 7663d14c5d2SYehuda Sadeh } 7673d14c5d2SYehuda Sadeh 768aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 7693d14c5d2SYehuda Sadeh { 7703d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 7713d14c5d2SYehuda Sadeh 7723d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 7733d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 7743d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 775aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 7763d14c5d2SYehuda Sadeh break; 7773d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 7783d14c5d2SYehuda Sadeh } 7793d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 7803d14c5d2SYehuda Sadeh } 7813d14c5d2SYehuda Sadeh 7823d14c5d2SYehuda Sadeh /* 7833d14c5d2SYehuda Sadeh * reset osd connect 7843d14c5d2SYehuda Sadeh */ 7853d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 7863d14c5d2SYehuda Sadeh { 787c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 7883d14c5d2SYehuda Sadeh 7893d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 790a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 791a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 7923d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 793c3acb181SAlex Elder 794c3acb181SAlex Elder return -ENODEV; 795c3acb181SAlex Elder } 796c3acb181SAlex Elder 797c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 798c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 7993d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 800c3acb181SAlex Elder struct ceph_osd_request *req; 801c3acb181SAlex Elder 8023d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 8033d14c5d2SYehuda Sadeh " letting msgr retry"); 8043d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 8053d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 8063d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 807c3acb181SAlex Elder 808c3acb181SAlex Elder return -EAGAIN; 8093d14c5d2SYehuda Sadeh } 810c3acb181SAlex Elder 811c3acb181SAlex Elder ceph_con_close(&osd->o_con); 812c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 813c3acb181SAlex Elder osd->o_incarnation++; 814c3acb181SAlex Elder 815c3acb181SAlex Elder return 0; 8163d14c5d2SYehuda Sadeh } 8173d14c5d2SYehuda Sadeh 8183d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 8193d14c5d2SYehuda Sadeh { 8203d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 8213d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8223d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 8233d14c5d2SYehuda Sadeh 824aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 8253d14c5d2SYehuda Sadeh while (*p) { 8263d14c5d2SYehuda Sadeh parent = *p; 8273d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 8283d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 8293d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8303d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 8313d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8323d14c5d2SYehuda Sadeh else 8333d14c5d2SYehuda Sadeh BUG(); 8343d14c5d2SYehuda Sadeh } 8353d14c5d2SYehuda Sadeh 8363d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 8373d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 8383d14c5d2SYehuda Sadeh } 8393d14c5d2SYehuda Sadeh 8403d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 8413d14c5d2SYehuda Sadeh { 8423d14c5d2SYehuda Sadeh struct ceph_osd *osd; 8433d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 8443d14c5d2SYehuda Sadeh 8453d14c5d2SYehuda Sadeh while (n) { 8463d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 8473d14c5d2SYehuda Sadeh if (o < osd->o_osd) 8483d14c5d2SYehuda Sadeh n = n->rb_left; 8493d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 8503d14c5d2SYehuda Sadeh n = n->rb_right; 8513d14c5d2SYehuda Sadeh else 8523d14c5d2SYehuda Sadeh return osd; 8533d14c5d2SYehuda Sadeh } 8543d14c5d2SYehuda Sadeh return NULL; 8553d14c5d2SYehuda Sadeh } 8563d14c5d2SYehuda Sadeh 8573d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 8583d14c5d2SYehuda Sadeh { 8593d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 8603d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 8613d14c5d2SYehuda Sadeh } 8623d14c5d2SYehuda Sadeh 8633d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 8643d14c5d2SYehuda Sadeh { 8653d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 8663d14c5d2SYehuda Sadeh } 8673d14c5d2SYehuda Sadeh 8683d14c5d2SYehuda Sadeh /* 8693d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 8703d14c5d2SYehuda Sadeh * the timeout event. 8713d14c5d2SYehuda Sadeh */ 872a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 8733d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8743d14c5d2SYehuda Sadeh { 8753d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 8763d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 87777f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 8783d14c5d2SYehuda Sadeh __insert_request(osdc, req); 8793d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 8803d14c5d2SYehuda Sadeh osdc->num_requests++; 8813d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 8823d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 8833d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 8843d14c5d2SYehuda Sadeh } 885a40c4f10SYehuda Sadeh } 886a40c4f10SYehuda Sadeh 8873d14c5d2SYehuda Sadeh /* 8883d14c5d2SYehuda Sadeh * called under osdc->request_mutex 8893d14c5d2SYehuda Sadeh */ 8903d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 8913d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8923d14c5d2SYehuda Sadeh { 89335f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 89435f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 89535f9f8a0SSage Weil req, req->r_tid); 89635f9f8a0SSage Weil return; 89735f9f8a0SSage Weil } 89835f9f8a0SSage Weil 8993d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 9003d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 9013d14c5d2SYehuda Sadeh osdc->num_requests--; 9023d14c5d2SYehuda Sadeh 9033d14c5d2SYehuda Sadeh if (req->r_osd) { 9043d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 9056740a845SAlex Elder ceph_msg_revoke(req->r_request); 9063d14c5d2SYehuda Sadeh 9073d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 908a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 909a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 910a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 9113d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 912a40c4f10SYehuda Sadeh } 913fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 9143d14c5d2SYehuda Sadeh req->r_osd = NULL; 9153d14c5d2SYehuda Sadeh } 9163d14c5d2SYehuda Sadeh 9177d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 9183d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 9193d14c5d2SYehuda Sadeh 9203d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 9213d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 9223d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 9233d14c5d2SYehuda Sadeh } 9243d14c5d2SYehuda Sadeh } 9253d14c5d2SYehuda Sadeh 9263d14c5d2SYehuda Sadeh /* 9273d14c5d2SYehuda Sadeh * Cancel a previously queued request message 9283d14c5d2SYehuda Sadeh */ 9293d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 9303d14c5d2SYehuda Sadeh { 9313d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 9326740a845SAlex Elder ceph_msg_revoke(req->r_request); 9333d14c5d2SYehuda Sadeh req->r_sent = 0; 9343d14c5d2SYehuda Sadeh } 9353d14c5d2SYehuda Sadeh } 9363d14c5d2SYehuda Sadeh 937a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 938a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 939a40c4f10SYehuda Sadeh { 940a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 941a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 9426194ea89SSage Weil if (req->r_osd) 9436194ea89SSage Weil list_add_tail(&req->r_linger_osd, 9446194ea89SSage Weil &req->r_osd->o_linger_requests); 945a40c4f10SYehuda Sadeh } 946a40c4f10SYehuda Sadeh 947a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 948a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 949a40c4f10SYehuda Sadeh { 950a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 951a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 95261c74035SAlex Elder if (req->r_osd) { 953a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 954a40c4f10SYehuda Sadeh 955a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 956a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 957a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 958a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 959a40c4f10SYehuda Sadeh } 960fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 961a40c4f10SYehuda Sadeh req->r_osd = NULL; 962a40c4f10SYehuda Sadeh } 963a40c4f10SYehuda Sadeh } 964a40c4f10SYehuda Sadeh 965a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 966a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 967a40c4f10SYehuda Sadeh { 968a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 969a40c4f10SYehuda Sadeh if (req->r_linger) { 970a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 971a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 972a40c4f10SYehuda Sadeh } 973a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 974a40c4f10SYehuda Sadeh } 975a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 976a40c4f10SYehuda Sadeh 977a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 978a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 979a40c4f10SYehuda Sadeh { 980a40c4f10SYehuda Sadeh if (!req->r_linger) { 981a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 982a40c4f10SYehuda Sadeh req->r_linger = 1; 983a40c4f10SYehuda Sadeh /* 984a40c4f10SYehuda Sadeh * caller is now responsible for calling 985a40c4f10SYehuda Sadeh * unregister_linger_request 986a40c4f10SYehuda Sadeh */ 987a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 988a40c4f10SYehuda Sadeh } 989a40c4f10SYehuda Sadeh } 990a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 991a40c4f10SYehuda Sadeh 9923d14c5d2SYehuda Sadeh /* 9933d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 9943d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 99525985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 9966f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 9973d14c5d2SYehuda Sadeh * 9983d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 9993d14c5d2SYehuda Sadeh * 10003d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 10013d14c5d2SYehuda Sadeh */ 10026f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 100338d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 10043d14c5d2SYehuda Sadeh { 10055b191d99SSage Weil struct ceph_pg pgid; 10063d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 10073d14c5d2SYehuda Sadeh int o = -1, num = 0; 10083d14c5d2SYehuda Sadeh int err; 10093d14c5d2SYehuda Sadeh 10106f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 101141766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 101241766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 10136f6c7006SSage Weil if (err) { 10146f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10153d14c5d2SYehuda Sadeh return err; 10166f6c7006SSage Weil } 10173d14c5d2SYehuda Sadeh req->r_pgid = pgid; 10183d14c5d2SYehuda Sadeh 10193d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 10203d14c5d2SYehuda Sadeh if (err > 0) { 10213d14c5d2SYehuda Sadeh o = acting[0]; 10223d14c5d2SYehuda Sadeh num = err; 10233d14c5d2SYehuda Sadeh } 10243d14c5d2SYehuda Sadeh 102538d6453cSSage Weil if ((!force_resend && 102638d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 10273d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 10283d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 10293d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 10303d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 10313d14c5d2SYehuda Sadeh return 0; /* no change */ 10323d14c5d2SYehuda Sadeh 10335b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 10345b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 10353d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 10363d14c5d2SYehuda Sadeh 10373d14c5d2SYehuda Sadeh /* record full pg acting set */ 10383d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 10393d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 10403d14c5d2SYehuda Sadeh 10413d14c5d2SYehuda Sadeh if (req->r_osd) { 10423d14c5d2SYehuda Sadeh __cancel_request(req); 10433d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 10443d14c5d2SYehuda Sadeh req->r_osd = NULL; 10453d14c5d2SYehuda Sadeh } 10463d14c5d2SYehuda Sadeh 10473d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 10483d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 10493d14c5d2SYehuda Sadeh err = -ENOMEM; 1050e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 10516f6c7006SSage Weil if (!req->r_osd) { 10526f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10533d14c5d2SYehuda Sadeh goto out; 10546f6c7006SSage Weil } 10553d14c5d2SYehuda Sadeh 10566f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 10573d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 10583d14c5d2SYehuda Sadeh 1059b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1060b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1061b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 10623d14c5d2SYehuda Sadeh } 10633d14c5d2SYehuda Sadeh 10643d14c5d2SYehuda Sadeh if (req->r_osd) { 10653d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1066ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1067ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 10686f6c7006SSage Weil } else { 1069ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 10703d14c5d2SYehuda Sadeh } 10713d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 10723d14c5d2SYehuda Sadeh 10733d14c5d2SYehuda Sadeh out: 10743d14c5d2SYehuda Sadeh return err; 10753d14c5d2SYehuda Sadeh } 10763d14c5d2SYehuda Sadeh 10773d14c5d2SYehuda Sadeh /* 10783d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 10793d14c5d2SYehuda Sadeh */ 108056e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 10813d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10823d14c5d2SYehuda Sadeh { 10831b83bef2SSage Weil void *p; 10843d14c5d2SYehuda Sadeh 10851b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 10861b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 10871b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 10883d14c5d2SYehuda Sadeh 10891b83bef2SSage Weil /* fill in message content that changes each time we send it */ 10901b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 10911b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 10921b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 10931b83bef2SSage Weil p = req->r_request_pgid; 10941b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 10951b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 10961b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 10971b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 10981b83bef2SSage Weil sizeof(req->r_reassert_version)); 10992169aea6SSage Weil 11003d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11013d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 11023d14c5d2SYehuda Sadeh 11033d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 11043d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 11053d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 11063d14c5d2SYehuda Sadeh } 11073d14c5d2SYehuda Sadeh 11083d14c5d2SYehuda Sadeh /* 11096f6c7006SSage Weil * Send any requests in the queue (req_unsent). 11106f6c7006SSage Weil */ 1111f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 11126f6c7006SSage Weil { 11136f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 11146f6c7006SSage Weil 1115f9d25199SAlex Elder dout("__send_queued\n"); 1116f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 11176f6c7006SSage Weil __send_request(osdc, req); 11186f6c7006SSage Weil } 11196f6c7006SSage Weil 11206f6c7006SSage Weil /* 11213d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 11223d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 11233d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 11243d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 11253d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 11263d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 11273d14c5d2SYehuda Sadeh * there are no open requests). 11283d14c5d2SYehuda Sadeh */ 11293d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 11303d14c5d2SYehuda Sadeh { 11313d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 11323d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 113383aff95eSSage Weil struct ceph_osd_request *req; 11343d14c5d2SYehuda Sadeh struct ceph_osd *osd; 11353d14c5d2SYehuda Sadeh unsigned long keepalive = 11363d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 11373d14c5d2SYehuda Sadeh struct list_head slow_osds; 11383d14c5d2SYehuda Sadeh dout("timeout\n"); 11393d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 11403d14c5d2SYehuda Sadeh 11413d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 11423d14c5d2SYehuda Sadeh 11433d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11443d14c5d2SYehuda Sadeh 11453d14c5d2SYehuda Sadeh /* 11463d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 11473d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 11483d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 11493d14c5d2SYehuda Sadeh */ 11503d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 11513d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 11523d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 11533d14c5d2SYehuda Sadeh break; 11543d14c5d2SYehuda Sadeh 11553d14c5d2SYehuda Sadeh osd = req->r_osd; 11563d14c5d2SYehuda Sadeh BUG_ON(!osd); 11573d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 11583d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 11593d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 11603d14c5d2SYehuda Sadeh } 11613d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 11623d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 11633d14c5d2SYehuda Sadeh o_keepalive_item); 11643d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 11653d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 11663d14c5d2SYehuda Sadeh } 11673d14c5d2SYehuda Sadeh 11683d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1169f9d25199SAlex Elder __send_queued(osdc); 11703d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11713d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 11723d14c5d2SYehuda Sadeh } 11733d14c5d2SYehuda Sadeh 11743d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 11753d14c5d2SYehuda Sadeh { 11763d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 11773d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 11783d14c5d2SYehuda Sadeh osds_timeout_work.work); 11793d14c5d2SYehuda Sadeh unsigned long delay = 11803d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 11813d14c5d2SYehuda Sadeh 11823d14c5d2SYehuda Sadeh dout("osds timeout\n"); 11833d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1184aca420bcSSage Weil remove_old_osds(osdc); 11853d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 11863d14c5d2SYehuda Sadeh 11873d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 11883d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 11893d14c5d2SYehuda Sadeh } 11903d14c5d2SYehuda Sadeh 119125845472SSage Weil static void complete_request(struct ceph_osd_request *req) 119225845472SSage Weil { 119325845472SSage Weil if (req->r_safe_callback) 119425845472SSage Weil req->r_safe_callback(req, NULL); 119525845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 119625845472SSage Weil } 119725845472SSage Weil 11981b83bef2SSage Weil static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid) 11991b83bef2SSage Weil { 12001b83bef2SSage Weil __u8 v; 12011b83bef2SSage Weil 12021b83bef2SSage Weil ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad); 12031b83bef2SSage Weil v = ceph_decode_8(p); 12041b83bef2SSage Weil if (v > 1) { 12051b83bef2SSage Weil pr_warning("do not understand pg encoding %d > 1", v); 12061b83bef2SSage Weil return -EINVAL; 12071b83bef2SSage Weil } 12081b83bef2SSage Weil pgid->pool = ceph_decode_64(p); 12091b83bef2SSage Weil pgid->seed = ceph_decode_32(p); 12101b83bef2SSage Weil *p += 4; 12111b83bef2SSage Weil return 0; 12121b83bef2SSage Weil 12131b83bef2SSage Weil bad: 12141b83bef2SSage Weil pr_warning("incomplete pg encoding"); 12151b83bef2SSage Weil return -EINVAL; 12161b83bef2SSage Weil } 12171b83bef2SSage Weil 12183d14c5d2SYehuda Sadeh /* 12193d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 12203d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 12213d14c5d2SYehuda Sadeh */ 12223d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 12233d14c5d2SYehuda Sadeh struct ceph_connection *con) 12243d14c5d2SYehuda Sadeh { 12251b83bef2SSage Weil void *p, *end; 12263d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 12273d14c5d2SYehuda Sadeh u64 tid; 12281b83bef2SSage Weil int object_len; 12291b83bef2SSage Weil int numops, payload_len, flags; 12303d14c5d2SYehuda Sadeh s32 result; 12311b83bef2SSage Weil s32 retry_attempt; 12321b83bef2SSage Weil struct ceph_pg pg; 12331b83bef2SSage Weil int err; 12341b83bef2SSage Weil u32 reassert_epoch; 12351b83bef2SSage Weil u64 reassert_version; 12361b83bef2SSage Weil u32 osdmap_epoch; 12370d5af164SAlex Elder int already_completed; 12381b83bef2SSage Weil int i; 12393d14c5d2SYehuda Sadeh 12403d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 12411b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 12421b83bef2SSage Weil 12431b83bef2SSage Weil p = msg->front.iov_base; 12441b83bef2SSage Weil end = p + msg->front.iov_len; 12451b83bef2SSage Weil 12461b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 12471b83bef2SSage Weil object_len = ceph_decode_32(&p); 12481b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 12491b83bef2SSage Weil p += object_len; 12501b83bef2SSage Weil 12511b83bef2SSage Weil err = __decode_pgid(&p, end, &pg); 12521b83bef2SSage Weil if (err) 12533d14c5d2SYehuda Sadeh goto bad; 12541b83bef2SSage Weil 12551b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 12561b83bef2SSage Weil flags = ceph_decode_64(&p); 12571b83bef2SSage Weil result = ceph_decode_32(&p); 12581b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 12591b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 12601b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 12611b83bef2SSage Weil 12623d14c5d2SYehuda Sadeh /* lookup */ 12633d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12643d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 12653d14c5d2SYehuda Sadeh if (req == NULL) { 12663d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 12673d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12683d14c5d2SYehuda Sadeh return; 12693d14c5d2SYehuda Sadeh } 12703d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12711b83bef2SSage Weil 12721b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 12731b83bef2SSage Weil req, result); 12741b83bef2SSage Weil 12751b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 12761b83bef2SSage Weil numops = ceph_decode_32(&p); 12771b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 12781b83bef2SSage Weil goto bad_put; 12791b83bef2SSage Weil if (numops != req->r_num_ops) 12801b83bef2SSage Weil goto bad_put; 12811b83bef2SSage Weil payload_len = 0; 12821b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 12831b83bef2SSage Weil for (i = 0; i < numops; i++) { 12841b83bef2SSage Weil struct ceph_osd_op *op = p; 12851b83bef2SSage Weil int len; 12861b83bef2SSage Weil 12871b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 12881b83bef2SSage Weil req->r_reply_op_len[i] = len; 12891b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 12901b83bef2SSage Weil payload_len += len; 12911b83bef2SSage Weil p += sizeof(*op); 12921b83bef2SSage Weil } 12931b83bef2SSage Weil if (payload_len != le32_to_cpu(msg->hdr.data_len)) { 12941b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 12951b83bef2SSage Weil payload_len, le32_to_cpu(msg->hdr.data_len)); 12961b83bef2SSage Weil goto bad_put; 12971b83bef2SSage Weil } 12981b83bef2SSage Weil 12991b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 13001b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 13011b83bef2SSage Weil for (i = 0; i < numops; i++) 13021b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 13033d14c5d2SYehuda Sadeh 13043d14c5d2SYehuda Sadeh /* 13053d14c5d2SYehuda Sadeh * if this connection filled our message, drop our reference now, to 13063d14c5d2SYehuda Sadeh * avoid a (safe but slower) revoke later. 13073d14c5d2SYehuda Sadeh */ 13083d14c5d2SYehuda Sadeh if (req->r_con_filling_msg == con && req->r_reply == msg) { 13093d14c5d2SYehuda Sadeh dout(" dropping con_filling_msg ref %p\n", con); 13103d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 13110d47766fSSage Weil con->ops->put(con); 13123d14c5d2SYehuda Sadeh } 13133d14c5d2SYehuda Sadeh 13143d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 131595c96174SEric Dumazet unsigned int bytes; 13163d14c5d2SYehuda Sadeh 13171b83bef2SSage Weil req->r_result = result; 13183d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 13193d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 13203d14c5d2SYehuda Sadeh bytes); 13213d14c5d2SYehuda Sadeh if (req->r_result == 0) 13223d14c5d2SYehuda Sadeh req->r_result = bytes; 13233d14c5d2SYehuda Sadeh 13243d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 13251b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 13261b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 13273d14c5d2SYehuda Sadeh 13283d14c5d2SYehuda Sadeh req->r_got_reply = 1; 13293d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 13303d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 13313d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13323d14c5d2SYehuda Sadeh goto done; 13333d14c5d2SYehuda Sadeh } 13343d14c5d2SYehuda Sadeh 13353d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 13363d14c5d2SYehuda Sadeh 1337a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1338a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1339a40c4f10SYehuda Sadeh 13403d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 13413d14c5d2SYehuda Sadeh if (result < 0 || 13423d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 13433d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 13443d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 13453d14c5d2SYehuda Sadeh 13460d5af164SAlex Elder already_completed = req->r_completed; 13470d5af164SAlex Elder req->r_completed = 1; 13483d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13490d5af164SAlex Elder if (already_completed) 13500d5af164SAlex Elder goto done; 13513d14c5d2SYehuda Sadeh 13523d14c5d2SYehuda Sadeh if (req->r_callback) 13533d14c5d2SYehuda Sadeh req->r_callback(req, msg); 13543d14c5d2SYehuda Sadeh else 13553d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 13563d14c5d2SYehuda Sadeh 135725845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 135825845472SSage Weil complete_request(req); 13593d14c5d2SYehuda Sadeh 13603d14c5d2SYehuda Sadeh done: 1361a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 13623d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 13633d14c5d2SYehuda Sadeh return; 13643d14c5d2SYehuda Sadeh 13651b83bef2SSage Weil bad_put: 13661b83bef2SSage Weil ceph_osdc_put_request(req); 13673d14c5d2SYehuda Sadeh bad: 13681b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 13691b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 13703d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 13713d14c5d2SYehuda Sadeh } 13723d14c5d2SYehuda Sadeh 13736f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 13743d14c5d2SYehuda Sadeh { 13753d14c5d2SYehuda Sadeh struct rb_node *p, *n; 13763d14c5d2SYehuda Sadeh 13773d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 13786f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 13793d14c5d2SYehuda Sadeh 13803d14c5d2SYehuda Sadeh n = rb_next(p); 13813d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 13823d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 13833d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 13843d14c5d2SYehuda Sadeh osd->o_osd), 13853d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 13863d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 13873d14c5d2SYehuda Sadeh } 13883d14c5d2SYehuda Sadeh } 13893d14c5d2SYehuda Sadeh 13903d14c5d2SYehuda Sadeh /* 13916f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 13926f6c7006SSage Weil * no osd, request a new map. 13933d14c5d2SYehuda Sadeh * 1394e6d50f67SAlex Elder * Caller should hold map_sem for read. 13953d14c5d2SYehuda Sadeh */ 139638d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 13973d14c5d2SYehuda Sadeh { 1398a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 13996f6c7006SSage Weil struct rb_node *p; 14006f6c7006SSage Weil int needmap = 0; 14016f6c7006SSage Weil int err; 14023d14c5d2SYehuda Sadeh 140338d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 14043d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14056194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 14066f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 14076194ea89SSage Weil p = rb_next(p); 1408ab60b16dSAlex Elder 1409ab60b16dSAlex Elder /* 1410ab60b16dSAlex Elder * For linger requests that have not yet been 1411ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1412ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1413ab60b16dSAlex Elder * the request before re-registering it as a linger 1414ab60b16dSAlex Elder * request to ensure the __map_request() below 1415ab60b16dSAlex Elder * will decide it needs to be sent. 1416ab60b16dSAlex Elder */ 1417ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1418ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1419ab60b16dSAlex Elder req, req->r_tid, 1420ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1421ab60b16dSAlex Elder __unregister_request(osdc, req); 1422ab60b16dSAlex Elder __register_linger_request(osdc, req); 1423ab60b16dSAlex Elder continue; 1424ab60b16dSAlex Elder } 1425ab60b16dSAlex Elder 142638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 14276f6c7006SSage Weil if (err < 0) 14286f6c7006SSage Weil continue; /* error */ 14296f6c7006SSage Weil if (req->r_osd == NULL) { 14306f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 14316f6c7006SSage Weil needmap++; /* request a newer map */ 14326f6c7006SSage Weil } else if (err > 0) { 14336194ea89SSage Weil if (!req->r_linger) { 14346194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 14356194ea89SSage Weil req->r_tid, 14366f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 14376f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 14386f6c7006SSage Weil } 14396f6c7006SSage Weil } 14406194ea89SSage Weil } 1441a40c4f10SYehuda Sadeh 1442a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1443a40c4f10SYehuda Sadeh r_linger_item) { 1444a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1445a40c4f10SYehuda Sadeh 144638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1447ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1448a40c4f10SYehuda Sadeh if (err == 0) 1449a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1450a40c4f10SYehuda Sadeh if (err < 0) 1451a40c4f10SYehuda Sadeh continue; /* hrm! */ 1452a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1453a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1454a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1455a40c4f10SYehuda Sadeh continue; 1456a40c4f10SYehuda Sadeh } 1457a40c4f10SYehuda Sadeh 1458a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1459a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1460a40c4f10SYehuda Sadeh __register_request(osdc, req); 1461c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1462a40c4f10SYehuda Sadeh } 14633d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14643d14c5d2SYehuda Sadeh 14653d14c5d2SYehuda Sadeh if (needmap) { 14663d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 14673d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 14683d14c5d2SYehuda Sadeh } 1469e6d50f67SAlex Elder reset_changed_osds(osdc); 14703d14c5d2SYehuda Sadeh } 14716f6c7006SSage Weil 14726f6c7006SSage Weil 14733d14c5d2SYehuda Sadeh /* 14743d14c5d2SYehuda Sadeh * Process updated osd map. 14753d14c5d2SYehuda Sadeh * 14763d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 14773d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 14783d14c5d2SYehuda Sadeh * off to different OSDs as needed. 14793d14c5d2SYehuda Sadeh */ 14803d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 14813d14c5d2SYehuda Sadeh { 14823d14c5d2SYehuda Sadeh void *p, *end, *next; 14833d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 14843d14c5d2SYehuda Sadeh u32 epoch; 14853d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 14863d14c5d2SYehuda Sadeh int err; 14873d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 14883d14c5d2SYehuda Sadeh 14893d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 14903d14c5d2SYehuda Sadeh p = msg->front.iov_base; 14913d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 14923d14c5d2SYehuda Sadeh 14933d14c5d2SYehuda Sadeh /* verify fsid */ 14943d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 14953d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 14963d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 14973d14c5d2SYehuda Sadeh return; 14983d14c5d2SYehuda Sadeh 14993d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 15003d14c5d2SYehuda Sadeh 15013d14c5d2SYehuda Sadeh /* incremental maps */ 15023d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15033d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 15043d14c5d2SYehuda Sadeh while (nr_maps > 0) { 15053d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15063d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15073d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15083d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15093d14c5d2SYehuda Sadeh next = p + maplen; 15103d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 15113d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 15123d14c5d2SYehuda Sadeh epoch, maplen); 15133d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 15143d14c5d2SYehuda Sadeh osdc->osdmap, 151515d9882cSAlex Elder &osdc->client->msgr); 15163d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 15173d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 15183d14c5d2SYehuda Sadeh goto bad; 15193d14c5d2SYehuda Sadeh } 15203d14c5d2SYehuda Sadeh BUG_ON(!newmap); 15213d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 15223d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 15233d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 15243d14c5d2SYehuda Sadeh } 152538d6453cSSage Weil kick_requests(osdc, 0); 15263d14c5d2SYehuda Sadeh } else { 15273d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 15283d14c5d2SYehuda Sadeh epoch, maplen); 15293d14c5d2SYehuda Sadeh } 15303d14c5d2SYehuda Sadeh p = next; 15313d14c5d2SYehuda Sadeh nr_maps--; 15323d14c5d2SYehuda Sadeh } 15333d14c5d2SYehuda Sadeh if (newmap) 15343d14c5d2SYehuda Sadeh goto done; 15353d14c5d2SYehuda Sadeh 15363d14c5d2SYehuda Sadeh /* full maps */ 15373d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15383d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 15393d14c5d2SYehuda Sadeh while (nr_maps) { 15403d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15413d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15423d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15433d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15443d14c5d2SYehuda Sadeh if (nr_maps > 1) { 15453d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 15463d14c5d2SYehuda Sadeh epoch, maplen); 15473d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 15483d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 15493d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 15503d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 15513d14c5d2SYehuda Sadeh } else { 155238d6453cSSage Weil int skipped_map = 0; 155338d6453cSSage Weil 15543d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 15553d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 15563d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 15573d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 15583d14c5d2SYehuda Sadeh goto bad; 15593d14c5d2SYehuda Sadeh } 15603d14c5d2SYehuda Sadeh BUG_ON(!newmap); 15613d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 15623d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 156338d6453cSSage Weil if (oldmap) { 156438d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 156538d6453cSSage Weil skipped_map = 1; 15663d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 156738d6453cSSage Weil } 156838d6453cSSage Weil kick_requests(osdc, skipped_map); 15693d14c5d2SYehuda Sadeh } 15703d14c5d2SYehuda Sadeh p += maplen; 15713d14c5d2SYehuda Sadeh nr_maps--; 15723d14c5d2SYehuda Sadeh } 15733d14c5d2SYehuda Sadeh 15743d14c5d2SYehuda Sadeh done: 15753d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 15763d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1577cd634fb6SSage Weil 1578cd634fb6SSage Weil /* 1579cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1580cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1581cd634fb6SSage Weil * ENOSPC. 1582cd634fb6SSage Weil */ 1583cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1584cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1585cd634fb6SSage Weil 1586f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1587f9d25199SAlex Elder __send_queued(osdc); 1588f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 15893d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 15903d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 15913d14c5d2SYehuda Sadeh return; 15923d14c5d2SYehuda Sadeh 15933d14c5d2SYehuda Sadeh bad: 15943d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 15953d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 15963d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 15973d14c5d2SYehuda Sadeh return; 15983d14c5d2SYehuda Sadeh } 15993d14c5d2SYehuda Sadeh 16003d14c5d2SYehuda Sadeh /* 1601a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1602a40c4f10SYehuda Sadeh * 1603a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1604a40c4f10SYehuda Sadeh */ 1605a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1606a40c4f10SYehuda Sadeh { 1607a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1608a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1609a40c4f10SYehuda Sadeh 1610a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1611a40c4f10SYehuda Sadeh kfree(event); 1612a40c4f10SYehuda Sadeh } 1613a40c4f10SYehuda Sadeh 1614a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1615a40c4f10SYehuda Sadeh { 1616a40c4f10SYehuda Sadeh kref_get(&event->kref); 1617a40c4f10SYehuda Sadeh } 1618a40c4f10SYehuda Sadeh 1619a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1620a40c4f10SYehuda Sadeh { 1621a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1622a40c4f10SYehuda Sadeh } 1623a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1624a40c4f10SYehuda Sadeh 1625a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1626a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1627a40c4f10SYehuda Sadeh { 1628a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1629a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1630a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1631a40c4f10SYehuda Sadeh 1632a40c4f10SYehuda Sadeh while (*p) { 1633a40c4f10SYehuda Sadeh parent = *p; 1634a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1635a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1636a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1637a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1638a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1639a40c4f10SYehuda Sadeh else 1640a40c4f10SYehuda Sadeh BUG(); 1641a40c4f10SYehuda Sadeh } 1642a40c4f10SYehuda Sadeh 1643a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1644a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1645a40c4f10SYehuda Sadeh } 1646a40c4f10SYehuda Sadeh 1647a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1648a40c4f10SYehuda Sadeh u64 cookie) 1649a40c4f10SYehuda Sadeh { 1650a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1651a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1652a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1653a40c4f10SYehuda Sadeh 1654a40c4f10SYehuda Sadeh while (*p) { 1655a40c4f10SYehuda Sadeh parent = *p; 1656a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1657a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1658a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1659a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1660a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1661a40c4f10SYehuda Sadeh else 1662a40c4f10SYehuda Sadeh return event; 1663a40c4f10SYehuda Sadeh } 1664a40c4f10SYehuda Sadeh return NULL; 1665a40c4f10SYehuda Sadeh } 1666a40c4f10SYehuda Sadeh 1667a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1668a40c4f10SYehuda Sadeh { 1669a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1670a40c4f10SYehuda Sadeh 1671a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1672a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1673a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1674a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1675a40c4f10SYehuda Sadeh } else { 1676a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1677a40c4f10SYehuda Sadeh } 1678a40c4f10SYehuda Sadeh } 1679a40c4f10SYehuda Sadeh 1680a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1681a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 16823c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1683a40c4f10SYehuda Sadeh { 1684a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1685a40c4f10SYehuda Sadeh 1686a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1687a40c4f10SYehuda Sadeh if (!event) 1688a40c4f10SYehuda Sadeh return -ENOMEM; 1689a40c4f10SYehuda Sadeh 1690a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1691a40c4f10SYehuda Sadeh event->cb = event_cb; 16923c663bbdSAlex Elder event->one_shot = 0; 1693a40c4f10SYehuda Sadeh event->data = data; 1694a40c4f10SYehuda Sadeh event->osdc = osdc; 1695a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 16963ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1697a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1698a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1699a40c4f10SYehuda Sadeh 1700a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1701a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1702a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1703a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1704a40c4f10SYehuda Sadeh 1705a40c4f10SYehuda Sadeh *pevent = event; 1706a40c4f10SYehuda Sadeh return 0; 1707a40c4f10SYehuda Sadeh } 1708a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1709a40c4f10SYehuda Sadeh 1710a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1711a40c4f10SYehuda Sadeh { 1712a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1713a40c4f10SYehuda Sadeh 1714a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1715a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1716a40c4f10SYehuda Sadeh __remove_event(event); 1717a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1718a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1719a40c4f10SYehuda Sadeh } 1720a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1721a40c4f10SYehuda Sadeh 1722a40c4f10SYehuda Sadeh 1723a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1724a40c4f10SYehuda Sadeh { 1725a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1726a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1727a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1728a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1729a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1730a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1731a40c4f10SYehuda Sadeh 1732a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1733a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1734a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1735a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1736a40c4f10SYehuda Sadeh kfree(event_work); 1737a40c4f10SYehuda Sadeh } 1738a40c4f10SYehuda Sadeh 1739a40c4f10SYehuda Sadeh 1740a40c4f10SYehuda Sadeh /* 1741a40c4f10SYehuda Sadeh * Process osd watch notifications 1742a40c4f10SYehuda Sadeh */ 17433c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 17443c663bbdSAlex Elder struct ceph_msg *msg) 1745a40c4f10SYehuda Sadeh { 1746a40c4f10SYehuda Sadeh void *p, *end; 1747a40c4f10SYehuda Sadeh u8 proto_ver; 1748a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1749a40c4f10SYehuda Sadeh u8 opcode; 1750a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1751a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1752a40c4f10SYehuda Sadeh 1753a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1754a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1755a40c4f10SYehuda Sadeh 1756a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1757a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1758a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1759a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1760a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1761a40c4f10SYehuda Sadeh 1762a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1763a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1764a40c4f10SYehuda Sadeh if (event) { 17653c663bbdSAlex Elder BUG_ON(event->one_shot); 1766a40c4f10SYehuda Sadeh get_event(event); 1767a40c4f10SYehuda Sadeh } 1768a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1769a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1770a40c4f10SYehuda Sadeh cookie, ver, event); 1771a40c4f10SYehuda Sadeh if (event) { 1772a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1773a40c4f10SYehuda Sadeh if (!event_work) { 1774a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1775a40c4f10SYehuda Sadeh goto done_err; 1776a40c4f10SYehuda Sadeh } 17776b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1778a40c4f10SYehuda Sadeh event_work->event = event; 1779a40c4f10SYehuda Sadeh event_work->ver = ver; 1780a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1781a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1782a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1783a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1784a40c4f10SYehuda Sadeh goto done_err; 1785a40c4f10SYehuda Sadeh } 1786a40c4f10SYehuda Sadeh } 1787a40c4f10SYehuda Sadeh 1788a40c4f10SYehuda Sadeh return; 1789a40c4f10SYehuda Sadeh 1790a40c4f10SYehuda Sadeh done_err: 1791a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1792a40c4f10SYehuda Sadeh return; 1793a40c4f10SYehuda Sadeh 1794a40c4f10SYehuda Sadeh bad: 1795a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1796a40c4f10SYehuda Sadeh return; 1797a40c4f10SYehuda Sadeh } 1798a40c4f10SYehuda Sadeh 179970636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 180070636773SAlex Elder struct ceph_osd_data *osd_data) 180170636773SAlex Elder { 180270636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 180370636773SAlex Elder BUG_ON(osd_data->length > (u64) SIZE_MAX); 180470636773SAlex Elder if (osd_data->length) 180570636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 180670636773SAlex Elder osd_data->length, osd_data->alignment); 18079a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 18089a5e6d09SAlex Elder BUG_ON(!osd_data->pagelist->length); 18099a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 181070636773SAlex Elder #ifdef CONFIG_BLOCK 181170636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 181270636773SAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio); 181370636773SAlex Elder #endif 181470636773SAlex Elder } else { 181570636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 181670636773SAlex Elder } 181770636773SAlex Elder } 181870636773SAlex Elder 1819a40c4f10SYehuda Sadeh /* 18203d14c5d2SYehuda Sadeh * Register request, send initial attempt. 18213d14c5d2SYehuda Sadeh */ 18223d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 18233d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 18243d14c5d2SYehuda Sadeh bool nofail) 18253d14c5d2SYehuda Sadeh { 18263d14c5d2SYehuda Sadeh int rc = 0; 18273d14c5d2SYehuda Sadeh 182870636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 18290fff87ecSAlex Elder 183070636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 183170636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 18323d14c5d2SYehuda Sadeh 18333d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 18343d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1835dc4b870cSAlex Elder __register_request(osdc, req); 183692451b49SAlex Elder WARN_ON(req->r_sent); 183738d6453cSSage Weil rc = __map_request(osdc, req, 0); 18389d6fcb08SSage Weil if (rc < 0) { 18399d6fcb08SSage Weil if (nofail) { 18409d6fcb08SSage Weil dout("osdc_start_request failed map, " 18419d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 18429d6fcb08SSage Weil rc = 0; 18439d6fcb08SSage Weil } 1844234af26fSDan Carpenter goto out_unlock; 18459d6fcb08SSage Weil } 18466f6c7006SSage Weil if (req->r_osd == NULL) { 18476f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 18486f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 18496f6c7006SSage Weil } else { 18507e2766a1SAlex Elder __send_queued(osdc); 185156e925b6SSage Weil } 18523d14c5d2SYehuda Sadeh rc = 0; 1853234af26fSDan Carpenter out_unlock: 18543d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 18553d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 18563d14c5d2SYehuda Sadeh return rc; 18573d14c5d2SYehuda Sadeh } 18583d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 18593d14c5d2SYehuda Sadeh 18603d14c5d2SYehuda Sadeh /* 18613d14c5d2SYehuda Sadeh * wait for a request to complete 18623d14c5d2SYehuda Sadeh */ 18633d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 18643d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 18653d14c5d2SYehuda Sadeh { 18663d14c5d2SYehuda Sadeh int rc; 18673d14c5d2SYehuda Sadeh 18683d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 18693d14c5d2SYehuda Sadeh if (rc < 0) { 18703d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18713d14c5d2SYehuda Sadeh __cancel_request(req); 18723d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 18733d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 187425845472SSage Weil complete_request(req); 18753d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 18763d14c5d2SYehuda Sadeh return rc; 18773d14c5d2SYehuda Sadeh } 18783d14c5d2SYehuda Sadeh 18793d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 18803d14c5d2SYehuda Sadeh return req->r_result; 18813d14c5d2SYehuda Sadeh } 18823d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 18833d14c5d2SYehuda Sadeh 18843d14c5d2SYehuda Sadeh /* 18853d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 18863d14c5d2SYehuda Sadeh */ 18873d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 18883d14c5d2SYehuda Sadeh { 18893d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 18903d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 18913d14c5d2SYehuda Sadeh 18923d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18933d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 18943d14c5d2SYehuda Sadeh while (1) { 18953d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 18963d14c5d2SYehuda Sadeh if (!req) 18973d14c5d2SYehuda Sadeh break; 18983d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 18993d14c5d2SYehuda Sadeh break; 19003d14c5d2SYehuda Sadeh 19013d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 19023d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 19033d14c5d2SYehuda Sadeh continue; 19043d14c5d2SYehuda Sadeh 19053d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 19063d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19073d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 19083d14c5d2SYehuda Sadeh req->r_tid, last_tid); 19093d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 19103d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19113d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19123d14c5d2SYehuda Sadeh } 19133d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19143d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 19153d14c5d2SYehuda Sadeh } 19163d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 19173d14c5d2SYehuda Sadeh 19183d14c5d2SYehuda Sadeh /* 19193d14c5d2SYehuda Sadeh * init, shutdown 19203d14c5d2SYehuda Sadeh */ 19213d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 19223d14c5d2SYehuda Sadeh { 19233d14c5d2SYehuda Sadeh int err; 19243d14c5d2SYehuda Sadeh 19253d14c5d2SYehuda Sadeh dout("init\n"); 19263d14c5d2SYehuda Sadeh osdc->client = client; 19273d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 19283d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 19293d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 19303d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 19313d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 19323d14c5d2SYehuda Sadeh osdc->last_tid = 0; 19333d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 19343d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 19353d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 19363d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 19376f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 19386f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 1939a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 19403d14c5d2SYehuda Sadeh osdc->num_requests = 0; 19413d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 19423d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 1943a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 1944a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 1945a40c4f10SYehuda Sadeh osdc->event_count = 0; 19463d14c5d2SYehuda Sadeh 19473d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 19483d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 19493d14c5d2SYehuda Sadeh 19503d14c5d2SYehuda Sadeh err = -ENOMEM; 19513d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 19523d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 19533d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 19543d14c5d2SYehuda Sadeh goto out; 19553d14c5d2SYehuda Sadeh 1956d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 1957d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 19583d14c5d2SYehuda Sadeh "osd_op"); 19593d14c5d2SYehuda Sadeh if (err < 0) 19603d14c5d2SYehuda Sadeh goto out_mempool; 1961d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 19623d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 19633d14c5d2SYehuda Sadeh "osd_op_reply"); 19643d14c5d2SYehuda Sadeh if (err < 0) 19653d14c5d2SYehuda Sadeh goto out_msgpool; 1966a40c4f10SYehuda Sadeh 1967a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 1968a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 1969a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 1970a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 1971a40c4f10SYehuda Sadeh goto out_msgpool; 1972a40c4f10SYehuda Sadeh } 19733d14c5d2SYehuda Sadeh return 0; 19743d14c5d2SYehuda Sadeh 19753d14c5d2SYehuda Sadeh out_msgpool: 19763d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 19773d14c5d2SYehuda Sadeh out_mempool: 19783d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 19793d14c5d2SYehuda Sadeh out: 19803d14c5d2SYehuda Sadeh return err; 19813d14c5d2SYehuda Sadeh } 19823d14c5d2SYehuda Sadeh 19833d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 19843d14c5d2SYehuda Sadeh { 1985a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 1986a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 19873d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 19883d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 19893d14c5d2SYehuda Sadeh if (osdc->osdmap) { 19903d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 19913d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 19923d14c5d2SYehuda Sadeh } 1993aca420bcSSage Weil remove_all_osds(osdc); 19943d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 19953d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 19963d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 19973d14c5d2SYehuda Sadeh } 19983d14c5d2SYehuda Sadeh 19993d14c5d2SYehuda Sadeh /* 20003d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 20013d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 20023d14c5d2SYehuda Sadeh */ 20033d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 20043d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 20053d14c5d2SYehuda Sadeh u64 off, u64 *plen, 20063d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2007b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 20083d14c5d2SYehuda Sadeh { 20093d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20100fff87ecSAlex Elder struct ceph_osd_data *osd_data; 20113d14c5d2SYehuda Sadeh int rc = 0; 20123d14c5d2SYehuda Sadeh 20133d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 20143d14c5d2SYehuda Sadeh vino.snap, off, *plen); 20153d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 20163d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 20173d14c5d2SYehuda Sadeh NULL, 0, truncate_seq, truncate_size, NULL, 2018153e5167SAlex Elder false); 20196816282dSSage Weil if (IS_ERR(req)) 20206816282dSSage Weil return PTR_ERR(req); 20213d14c5d2SYehuda Sadeh 20223d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 20230fff87ecSAlex Elder 20240fff87ecSAlex Elder osd_data = &req->r_data_in; 20250fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 20260fff87ecSAlex Elder osd_data->pages = pages; 2027e0c59487SAlex Elder osd_data->length = *plen; 20280fff87ecSAlex Elder osd_data->alignment = page_align; 20293d14c5d2SYehuda Sadeh 2030e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 2031e0c59487SAlex Elder off, *plen, osd_data->length, page_align); 20323d14c5d2SYehuda Sadeh 20333d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 20343d14c5d2SYehuda Sadeh if (!rc) 20353d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 20363d14c5d2SYehuda Sadeh 20373d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20383d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 20393d14c5d2SYehuda Sadeh return rc; 20403d14c5d2SYehuda Sadeh } 20413d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 20423d14c5d2SYehuda Sadeh 20433d14c5d2SYehuda Sadeh /* 20443d14c5d2SYehuda Sadeh * do a synchronous write on N pages 20453d14c5d2SYehuda Sadeh */ 20463d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 20473d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 20483d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 20493d14c5d2SYehuda Sadeh u64 off, u64 len, 20503d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 20513d14c5d2SYehuda Sadeh struct timespec *mtime, 205224808826SAlex Elder struct page **pages, int num_pages) 20533d14c5d2SYehuda Sadeh { 20543d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20550fff87ecSAlex Elder struct ceph_osd_data *osd_data; 20563d14c5d2SYehuda Sadeh int rc = 0; 2057b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 20583d14c5d2SYehuda Sadeh 20593d14c5d2SYehuda Sadeh BUG_ON(vino.snap != CEPH_NOSNAP); 20603d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 20613d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 206224808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2063fbf8685fSAlex Elder snapc, 0, 20643d14c5d2SYehuda Sadeh truncate_seq, truncate_size, mtime, 2065153e5167SAlex Elder true); 20666816282dSSage Weil if (IS_ERR(req)) 20676816282dSSage Weil return PTR_ERR(req); 20683d14c5d2SYehuda Sadeh 20693d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 20700fff87ecSAlex Elder osd_data = &req->r_data_out; 20710fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 20720fff87ecSAlex Elder osd_data->pages = pages; 2073e0c59487SAlex Elder osd_data->length = len; 20740fff87ecSAlex Elder osd_data->alignment = page_align; 2075e0c59487SAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length); 20763d14c5d2SYehuda Sadeh 207787f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 20783d14c5d2SYehuda Sadeh if (!rc) 20793d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 20803d14c5d2SYehuda Sadeh 20813d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20823d14c5d2SYehuda Sadeh if (rc == 0) 20833d14c5d2SYehuda Sadeh rc = len; 20843d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 20853d14c5d2SYehuda Sadeh return rc; 20863d14c5d2SYehuda Sadeh } 20873d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 20883d14c5d2SYehuda Sadeh 20893d14c5d2SYehuda Sadeh /* 20903d14c5d2SYehuda Sadeh * handle incoming message 20913d14c5d2SYehuda Sadeh */ 20923d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 20933d14c5d2SYehuda Sadeh { 20943d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20953d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 20963d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 20973d14c5d2SYehuda Sadeh 20983d14c5d2SYehuda Sadeh if (!osd) 20993d14c5d2SYehuda Sadeh goto out; 21003d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 21013d14c5d2SYehuda Sadeh 21023d14c5d2SYehuda Sadeh switch (type) { 21033d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 21043d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 21053d14c5d2SYehuda Sadeh break; 21063d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21073d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 21083d14c5d2SYehuda Sadeh break; 2109a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2110a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2111a40c4f10SYehuda Sadeh break; 21123d14c5d2SYehuda Sadeh 21133d14c5d2SYehuda Sadeh default: 21143d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 21153d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 21163d14c5d2SYehuda Sadeh } 21173d14c5d2SYehuda Sadeh out: 21183d14c5d2SYehuda Sadeh ceph_msg_put(msg); 21193d14c5d2SYehuda Sadeh } 21203d14c5d2SYehuda Sadeh 21213d14c5d2SYehuda Sadeh /* 21223d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 21233d14c5d2SYehuda Sadeh * pages. 21243d14c5d2SYehuda Sadeh */ 21253d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 21263d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 21273d14c5d2SYehuda Sadeh int *skip) 21283d14c5d2SYehuda Sadeh { 21293d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21303d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 21313d14c5d2SYehuda Sadeh struct ceph_msg *m; 21323d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21333d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 21343d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 21353d14c5d2SYehuda Sadeh u64 tid; 21363d14c5d2SYehuda Sadeh 21373d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 21383d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 21393d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 21403d14c5d2SYehuda Sadeh if (!req) { 21413d14c5d2SYehuda Sadeh *skip = 1; 21423d14c5d2SYehuda Sadeh m = NULL; 2143756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 21443d14c5d2SYehuda Sadeh osd->o_osd); 21453d14c5d2SYehuda Sadeh goto out; 21463d14c5d2SYehuda Sadeh } 21473d14c5d2SYehuda Sadeh 21483d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 21498921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 21503d14c5d2SYehuda Sadeh req->r_reply, req->r_con_filling_msg); 21518921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 21520d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 21533d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 21543d14c5d2SYehuda Sadeh } 21553d14c5d2SYehuda Sadeh 21563d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 21573d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 21583d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2159b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 21603d14c5d2SYehuda Sadeh if (!m) 21613d14c5d2SYehuda Sadeh goto out; 21623d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 21633d14c5d2SYehuda Sadeh req->r_reply = m; 21643d14c5d2SYehuda Sadeh } 21653d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 21663d14c5d2SYehuda Sadeh 21673d14c5d2SYehuda Sadeh if (data_len > 0) { 21680fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 21690fff87ecSAlex Elder 21700fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 21710fff87ecSAlex Elder if (osd_data->pages && 2172e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 21732ac2b7a6SAlex Elder 2174e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2175e0c59487SAlex Elder "we had only %llu bytes ready\n", 2176e0c59487SAlex Elder tid, data_len, osd_data->length); 21773d14c5d2SYehuda Sadeh *skip = 1; 21783d14c5d2SYehuda Sadeh ceph_msg_put(m); 21793d14c5d2SYehuda Sadeh m = NULL; 21803d14c5d2SYehuda Sadeh goto out; 21813d14c5d2SYehuda Sadeh } 21823d14c5d2SYehuda Sadeh } 21832ac2b7a6SAlex Elder } 21843d14c5d2SYehuda Sadeh *skip = 0; 21850d47766fSSage Weil req->r_con_filling_msg = con->ops->get(con); 21863d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 21873d14c5d2SYehuda Sadeh 21883d14c5d2SYehuda Sadeh out: 21893d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 21903d14c5d2SYehuda Sadeh return m; 21913d14c5d2SYehuda Sadeh 21923d14c5d2SYehuda Sadeh } 21933d14c5d2SYehuda Sadeh 21943d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 21953d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 21963d14c5d2SYehuda Sadeh int *skip) 21973d14c5d2SYehuda Sadeh { 21983d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21993d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 22003d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22013d14c5d2SYehuda Sadeh 22021c20f2d2SAlex Elder *skip = 0; 22033d14c5d2SYehuda Sadeh switch (type) { 22043d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2205a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2206b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 22073d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22083d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 22093d14c5d2SYehuda Sadeh default: 22103d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 22113d14c5d2SYehuda Sadeh osd->o_osd); 22123d14c5d2SYehuda Sadeh *skip = 1; 22133d14c5d2SYehuda Sadeh return NULL; 22143d14c5d2SYehuda Sadeh } 22153d14c5d2SYehuda Sadeh } 22163d14c5d2SYehuda Sadeh 22173d14c5d2SYehuda Sadeh /* 22183d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 22193d14c5d2SYehuda Sadeh */ 22203d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 22213d14c5d2SYehuda Sadeh { 22223d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22233d14c5d2SYehuda Sadeh if (get_osd(osd)) 22243d14c5d2SYehuda Sadeh return con; 22253d14c5d2SYehuda Sadeh return NULL; 22263d14c5d2SYehuda Sadeh } 22273d14c5d2SYehuda Sadeh 22283d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 22293d14c5d2SYehuda Sadeh { 22303d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22313d14c5d2SYehuda Sadeh put_osd(osd); 22323d14c5d2SYehuda Sadeh } 22333d14c5d2SYehuda Sadeh 22343d14c5d2SYehuda Sadeh /* 22353d14c5d2SYehuda Sadeh * authentication 22363d14c5d2SYehuda Sadeh */ 2237a3530df3SAlex Elder /* 2238a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2239a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2240a3530df3SAlex Elder */ 2241a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 22428f43fb53SAlex Elder int *proto, int force_new) 22433d14c5d2SYehuda Sadeh { 22443d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22453d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22463d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 224774f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 22483d14c5d2SYehuda Sadeh 224974f1869fSAlex Elder if (force_new && auth->authorizer) { 225027859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 225174f1869fSAlex Elder auth->authorizer = NULL; 22523d14c5d2SYehuda Sadeh } 225327859f97SSage Weil if (!auth->authorizer) { 225427859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2255a3530df3SAlex Elder auth); 22563d14c5d2SYehuda Sadeh if (ret) 2257a3530df3SAlex Elder return ERR_PTR(ret); 225827859f97SSage Weil } else { 225927859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 22600bed9b5cSSage Weil auth); 22610bed9b5cSSage Weil if (ret) 22620bed9b5cSSage Weil return ERR_PTR(ret); 22633d14c5d2SYehuda Sadeh } 22643d14c5d2SYehuda Sadeh *proto = ac->protocol; 226574f1869fSAlex Elder 2266a3530df3SAlex Elder return auth; 22673d14c5d2SYehuda Sadeh } 22683d14c5d2SYehuda Sadeh 22693d14c5d2SYehuda Sadeh 22703d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 22713d14c5d2SYehuda Sadeh { 22723d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22733d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22743d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 22753d14c5d2SYehuda Sadeh 227627859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 22773d14c5d2SYehuda Sadeh } 22783d14c5d2SYehuda Sadeh 22793d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 22803d14c5d2SYehuda Sadeh { 22813d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22823d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22833d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 22843d14c5d2SYehuda Sadeh 228527859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 22863d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 22873d14c5d2SYehuda Sadeh } 22883d14c5d2SYehuda Sadeh 22893d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 22903d14c5d2SYehuda Sadeh .get = get_osd_con, 22913d14c5d2SYehuda Sadeh .put = put_osd_con, 22923d14c5d2SYehuda Sadeh .dispatch = dispatch, 22933d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 22943d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 22953d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 22963d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 22973d14c5d2SYehuda Sadeh .fault = osd_reset, 22983d14c5d2SYehuda Sadeh }; 2299