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 */ 66e75b45cfSAlex Elder static int calc_layout(struct ceph_vino vino, 673d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 683d14c5d2SYehuda Sadeh u64 off, u64 *plen, 693d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 703d14c5d2SYehuda Sadeh struct ceph_osd_req_op *op) 713d14c5d2SYehuda Sadeh { 7260e56f13SAlex Elder u64 orig_len = *plen; 7360e56f13SAlex Elder u64 bno = 0; 7460e56f13SAlex Elder u64 objoff = 0; 7560e56f13SAlex Elder u64 objlen = 0; 76d63b77f4SSage Weil int r; 773d14c5d2SYehuda Sadeh 7860e56f13SAlex Elder /* object extent? */ 7960e56f13SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, &bno, 8060e56f13SAlex Elder &objoff, &objlen); 81d63b77f4SSage Weil if (r < 0) 82d63b77f4SSage Weil return r; 8360e56f13SAlex Elder if (objlen < orig_len) { 8460e56f13SAlex Elder *plen = objlen; 8560e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 8660e56f13SAlex Elder orig_len - *plen, off, *plen); 8760e56f13SAlex Elder } 8860e56f13SAlex Elder 8960e56f13SAlex Elder if (op_has_extent(op->op)) { 9060e56f13SAlex Elder u32 osize = le32_to_cpu(layout->fl_object_size); 9160e56f13SAlex Elder op->extent.offset = objoff; 9260e56f13SAlex Elder op->extent.length = objlen; 9360e56f13SAlex Elder if (op->extent.truncate_size <= off - objoff) { 9460e56f13SAlex Elder op->extent.truncate_size = 0; 9560e56f13SAlex Elder } else { 9660e56f13SAlex Elder op->extent.truncate_size -= off - objoff; 9760e56f13SAlex Elder if (op->extent.truncate_size > osize) 9860e56f13SAlex Elder op->extent.truncate_size = osize; 9960e56f13SAlex Elder } 10060e56f13SAlex Elder } 10160e56f13SAlex Elder req->r_num_pages = calc_pages_for(off, *plen); 10260e56f13SAlex Elder req->r_page_alignment = off & ~PAGE_MASK; 10360e56f13SAlex Elder if (op->op == CEPH_OSD_OP_WRITE) 10460e56f13SAlex Elder op->payload_len = *plen; 10560e56f13SAlex Elder 10660e56f13SAlex Elder dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", 10760e56f13SAlex Elder bno, objoff, objlen, req->r_num_pages); 1083d14c5d2SYehuda Sadeh 1092dab036bSSage Weil snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); 1103d14c5d2SYehuda Sadeh req->r_oid_len = strlen(req->r_oid); 111d63b77f4SSage Weil 112d63b77f4SSage Weil return r; 1133d14c5d2SYehuda Sadeh } 1143d14c5d2SYehuda Sadeh 1153d14c5d2SYehuda Sadeh /* 1163d14c5d2SYehuda Sadeh * requests 1173d14c5d2SYehuda Sadeh */ 1183d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1193d14c5d2SYehuda Sadeh { 1203d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 1213d14c5d2SYehuda Sadeh struct ceph_osd_request, 1223d14c5d2SYehuda Sadeh r_kref); 1233d14c5d2SYehuda Sadeh 1243d14c5d2SYehuda Sadeh if (req->r_request) 1253d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 1263d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 1279cbb1d72SAlex Elder dout("%s revoking msg %p from con %p\n", __func__, 1289cbb1d72SAlex Elder req->r_reply, req->r_con_filling_msg); 1298921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 1300d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 1319cbb1d72SAlex Elder req->r_con_filling_msg = NULL; 1323d14c5d2SYehuda Sadeh } 133ab8cb34aSAlex Elder if (req->r_reply) 134ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 1353d14c5d2SYehuda Sadeh if (req->r_own_pages) 1363d14c5d2SYehuda Sadeh ceph_release_page_vector(req->r_pages, 1373d14c5d2SYehuda Sadeh req->r_num_pages); 1383d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 139c885837fSAlex Elder ceph_pagelist_release(&req->r_trail); 1403d14c5d2SYehuda Sadeh if (req->r_mempool) 1413d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1423d14c5d2SYehuda Sadeh else 1433d14c5d2SYehuda Sadeh kfree(req); 1443d14c5d2SYehuda Sadeh } 1453d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1463d14c5d2SYehuda Sadeh 1473d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1483d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1491b83bef2SSage Weil unsigned int num_ops, 1503d14c5d2SYehuda Sadeh bool use_mempool, 15154a54007SAlex Elder gfp_t gfp_flags) 1523d14c5d2SYehuda Sadeh { 1533d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1543d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1551b83bef2SSage Weil size_t msg_size; 1563d14c5d2SYehuda Sadeh 1571b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1581b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1591b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1601b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1611b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1621b83bef2SSage Weil msg_size += 8; /* snapid */ 1631b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1641b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1651b83bef2SSage Weil msg_size += 4; 1663d14c5d2SYehuda Sadeh 1673d14c5d2SYehuda Sadeh if (use_mempool) { 1683d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1693d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1703d14c5d2SYehuda Sadeh } else { 1713d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1723d14c5d2SYehuda Sadeh } 1733d14c5d2SYehuda Sadeh if (req == NULL) 1743d14c5d2SYehuda Sadeh return NULL; 1753d14c5d2SYehuda Sadeh 1763d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1773d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1783d14c5d2SYehuda Sadeh 1793d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1803d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1813d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 182a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1833d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 184a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 185a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 186935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 187cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 188cd43045cSSage Weil 1893d14c5d2SYehuda Sadeh /* create reply message */ 1903d14c5d2SYehuda Sadeh if (use_mempool) 1913d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 1923d14c5d2SYehuda Sadeh else 1933d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 194b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 1953d14c5d2SYehuda Sadeh if (!msg) { 1963d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1973d14c5d2SYehuda Sadeh return NULL; 1983d14c5d2SYehuda Sadeh } 1993d14c5d2SYehuda Sadeh req->r_reply = msg; 2003d14c5d2SYehuda Sadeh 201c885837fSAlex Elder ceph_pagelist_init(&req->r_trail); 202d50b409fSSage Weil 2033d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2043d14c5d2SYehuda Sadeh if (use_mempool) 2053d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2063d14c5d2SYehuda Sadeh else 207b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2083d14c5d2SYehuda Sadeh if (!msg) { 2093d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2103d14c5d2SYehuda Sadeh return NULL; 2113d14c5d2SYehuda Sadeh } 2123d14c5d2SYehuda Sadeh 2133d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2143d14c5d2SYehuda Sadeh 2153d14c5d2SYehuda Sadeh req->r_request = msg; 2163d14c5d2SYehuda Sadeh 2173d14c5d2SYehuda Sadeh return req; 2183d14c5d2SYehuda Sadeh } 2193d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2203d14c5d2SYehuda Sadeh 2213d14c5d2SYehuda Sadeh static void osd_req_encode_op(struct ceph_osd_request *req, 2223d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 2233d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 2243d14c5d2SYehuda Sadeh { 2253d14c5d2SYehuda Sadeh dst->op = cpu_to_le16(src->op); 2263d14c5d2SYehuda Sadeh 227065a68f9SAlex Elder switch (src->op) { 228fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 229fbfab539SAlex Elder break; 2303d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 2313d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 2323d14c5d2SYehuda Sadeh dst->extent.offset = 2333d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.offset); 2343d14c5d2SYehuda Sadeh dst->extent.length = 2353d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.length); 2363d14c5d2SYehuda Sadeh dst->extent.truncate_size = 2373d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 2383d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 2393d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 2403d14c5d2SYehuda Sadeh break; 2413d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 2423d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 2433d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 2443d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 2453d14c5d2SYehuda Sadeh 246c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.class_name, 2473d14c5d2SYehuda Sadeh src->cls.class_len); 248c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.method_name, 2493d14c5d2SYehuda Sadeh src->cls.method_len); 250c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.indata, 2513d14c5d2SYehuda Sadeh src->cls.indata_len); 2523d14c5d2SYehuda Sadeh break; 2533d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 2543d14c5d2SYehuda Sadeh break; 255a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 256a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 257a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 258a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 259a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 260a40c4f10SYehuda Sadeh break; 2613d14c5d2SYehuda Sadeh default: 2623d14c5d2SYehuda Sadeh pr_err("unrecognized osd opcode %d\n", dst->op); 2633d14c5d2SYehuda Sadeh WARN_ON(1); 2643d14c5d2SYehuda Sadeh break; 2654c46459cSAlex Elder case CEPH_OSD_OP_MAPEXT: 2664c46459cSAlex Elder case CEPH_OSD_OP_MASKTRUNC: 2674c46459cSAlex Elder case CEPH_OSD_OP_SPARSE_READ: 268a9f36c3eSAlex Elder case CEPH_OSD_OP_NOTIFY: 2694c46459cSAlex Elder case CEPH_OSD_OP_ASSERT_VER: 2704c46459cSAlex Elder case CEPH_OSD_OP_WRITEFULL: 2714c46459cSAlex Elder case CEPH_OSD_OP_TRUNCATE: 2724c46459cSAlex Elder case CEPH_OSD_OP_ZERO: 2734c46459cSAlex Elder case CEPH_OSD_OP_DELETE: 2744c46459cSAlex Elder case CEPH_OSD_OP_APPEND: 2754c46459cSAlex Elder case CEPH_OSD_OP_SETTRUNC: 2764c46459cSAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 2774c46459cSAlex Elder case CEPH_OSD_OP_TMAPUP: 2784c46459cSAlex Elder case CEPH_OSD_OP_TMAPPUT: 2794c46459cSAlex Elder case CEPH_OSD_OP_TMAPGET: 2804c46459cSAlex Elder case CEPH_OSD_OP_CREATE: 281a9f36c3eSAlex Elder case CEPH_OSD_OP_ROLLBACK: 2824c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 2834c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 2844c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 2854c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 2864c46459cSAlex Elder case CEPH_OSD_OP_MODE_RD: 2874c46459cSAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 2884c46459cSAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 2894c46459cSAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 2904c46459cSAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 2914c46459cSAlex Elder case CEPH_OSD_OP_OMAP_CMP: 2924c46459cSAlex Elder case CEPH_OSD_OP_CLONERANGE: 2934c46459cSAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 2944c46459cSAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 295a9f36c3eSAlex Elder case CEPH_OSD_OP_GETXATTR: 2964c46459cSAlex Elder case CEPH_OSD_OP_GETXATTRS: 297a9f36c3eSAlex Elder case CEPH_OSD_OP_CMPXATTR: 298a9f36c3eSAlex Elder case CEPH_OSD_OP_SETXATTR: 2994c46459cSAlex Elder case CEPH_OSD_OP_SETXATTRS: 3004c46459cSAlex Elder case CEPH_OSD_OP_RESETXATTRS: 3014c46459cSAlex Elder case CEPH_OSD_OP_RMXATTR: 3024c46459cSAlex Elder case CEPH_OSD_OP_PULL: 3034c46459cSAlex Elder case CEPH_OSD_OP_PUSH: 3044c46459cSAlex Elder case CEPH_OSD_OP_BALANCEREADS: 3054c46459cSAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 3064c46459cSAlex Elder case CEPH_OSD_OP_SCRUB: 3074c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 3084c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 3094c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 3104c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 3114c46459cSAlex Elder case CEPH_OSD_OP_WRLOCK: 3124c46459cSAlex Elder case CEPH_OSD_OP_WRUNLOCK: 3134c46459cSAlex Elder case CEPH_OSD_OP_RDLOCK: 3144c46459cSAlex Elder case CEPH_OSD_OP_RDUNLOCK: 3154c46459cSAlex Elder case CEPH_OSD_OP_UPLOCK: 3164c46459cSAlex Elder case CEPH_OSD_OP_DNLOCK: 3174c46459cSAlex Elder case CEPH_OSD_OP_PGLS: 3184c46459cSAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 3194c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 3204c46459cSAlex Elder ceph_osd_op_name(dst->op)); 3214c46459cSAlex Elder WARN_ON(1); 3224c46459cSAlex Elder break; 3233d14c5d2SYehuda Sadeh } 3243d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 3253d14c5d2SYehuda Sadeh } 3263d14c5d2SYehuda Sadeh 3273d14c5d2SYehuda Sadeh /* 3283d14c5d2SYehuda Sadeh * build new request AND message 3293d14c5d2SYehuda Sadeh * 3303d14c5d2SYehuda Sadeh */ 3313d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 3321b83bef2SSage Weil u64 off, u64 len, unsigned int num_ops, 3333d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 3344d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 335af77f26cSAlex Elder struct timespec *mtime) 3363d14c5d2SYehuda Sadeh { 3373d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 3383d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 3393d14c5d2SYehuda Sadeh void *p; 3401b83bef2SSage Weil size_t msg_size; 3413d14c5d2SYehuda Sadeh int flags = req->r_flags; 342f44246e3SAlex Elder u64 data_len; 3433d14c5d2SYehuda Sadeh int i; 3443d14c5d2SYehuda Sadeh 3451b83bef2SSage Weil req->r_num_ops = num_ops; 3461b83bef2SSage Weil req->r_snapid = snap_id; 3473d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 3483d14c5d2SYehuda Sadeh 3491b83bef2SSage Weil /* encode request */ 3501b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 3513d14c5d2SYehuda Sadeh 3521b83bef2SSage Weil p = msg->front.iov_base; 3531b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 3541b83bef2SSage Weil req->r_request_osdmap_epoch = p; 3551b83bef2SSage Weil p += 4; 3561b83bef2SSage Weil req->r_request_flags = p; 3571b83bef2SSage Weil p += 4; 3581b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 3591b83bef2SSage Weil ceph_encode_timespec(p, mtime); 3601b83bef2SSage Weil p += sizeof(struct ceph_timespec); 3611b83bef2SSage Weil req->r_request_reassert_version = p; 3621b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 3631b83bef2SSage Weil 3641b83bef2SSage Weil /* oloc */ 3651b83bef2SSage Weil ceph_encode_8(&p, 4); 3661b83bef2SSage Weil ceph_encode_8(&p, 4); 3671b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 3681b83bef2SSage Weil req->r_request_pool = p; 3691b83bef2SSage Weil p += 8; 3701b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 3711b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 3721b83bef2SSage Weil 3731b83bef2SSage Weil ceph_encode_8(&p, 1); 3741b83bef2SSage Weil req->r_request_pgid = p; 3751b83bef2SSage Weil p += 8 + 4; 3761b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 3771b83bef2SSage Weil 3781b83bef2SSage Weil /* oid */ 3791b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 380af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 3811b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 382af77f26cSAlex Elder p += req->r_oid_len; 3833d14c5d2SYehuda Sadeh 3841b83bef2SSage Weil /* ops */ 3851b83bef2SSage Weil ceph_encode_16(&p, num_ops); 3863d14c5d2SYehuda Sadeh src_op = src_ops; 3871b83bef2SSage Weil req->r_request_ops = p; 3881b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 3891b83bef2SSage Weil osd_req_encode_op(req, p, src_op); 3901b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 3911b83bef2SSage Weil } 3923d14c5d2SYehuda Sadeh 3931b83bef2SSage Weil /* snaps */ 3941b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 3951b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 3961b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 3971b83bef2SSage Weil if (req->r_snapc) { 3983d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 3991b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 4003d14c5d2SYehuda Sadeh } 4013d14c5d2SYehuda Sadeh } 4023d14c5d2SYehuda Sadeh 4031b83bef2SSage Weil req->r_request_attempts = p; 4041b83bef2SSage Weil p += 4; 4051b83bef2SSage Weil 406f44246e3SAlex Elder data_len = req->r_trail.length; 4073d14c5d2SYehuda Sadeh if (flags & CEPH_OSD_FLAG_WRITE) { 4083d14c5d2SYehuda Sadeh req->r_request->hdr.data_off = cpu_to_le16(off); 409f44246e3SAlex Elder data_len += len; 4103d14c5d2SYehuda Sadeh } 411f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 412c5c6b19dSSage Weil req->r_request->page_alignment = req->r_page_alignment; 413c5c6b19dSSage Weil 4143d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 4153d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 4163d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 4173d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 4181b83bef2SSage Weil 4191b83bef2SSage Weil dout("build_request msg_size was %d num_ops %d\n", (int)msg_size, 4201b83bef2SSage Weil num_ops); 4213d14c5d2SYehuda Sadeh return; 4223d14c5d2SYehuda Sadeh } 4233d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 4243d14c5d2SYehuda Sadeh 4253d14c5d2SYehuda Sadeh /* 4263d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 4273d14c5d2SYehuda Sadeh * extent as needed. 4283d14c5d2SYehuda Sadeh * 4293d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 4303d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 4313d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 4323d14c5d2SYehuda Sadeh * 4333d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 4343d14c5d2SYehuda Sadeh * data quickly. 4353d14c5d2SYehuda Sadeh */ 4363d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 4373d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 4383d14c5d2SYehuda Sadeh struct ceph_vino vino, 4393d14c5d2SYehuda Sadeh u64 off, u64 *plen, 4403d14c5d2SYehuda Sadeh int opcode, int flags, 4413d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 4423d14c5d2SYehuda Sadeh int do_sync, 4433d14c5d2SYehuda Sadeh u32 truncate_seq, 4443d14c5d2SYehuda Sadeh u64 truncate_size, 4453d14c5d2SYehuda Sadeh struct timespec *mtime, 446a3bea47eSAlex Elder bool use_mempool, 447b7495fc2SSage Weil int page_align) 4483d14c5d2SYehuda Sadeh { 449ae7ca4a3SAlex Elder struct ceph_osd_req_op ops[2]; 4503d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 451ae7ca4a3SAlex Elder unsigned int num_op = 1; 4526816282dSSage Weil int r; 4533d14c5d2SYehuda Sadeh 454ae7ca4a3SAlex Elder memset(&ops, 0, sizeof ops); 455ae7ca4a3SAlex Elder 4563d14c5d2SYehuda Sadeh ops[0].op = opcode; 4573d14c5d2SYehuda Sadeh ops[0].extent.truncate_seq = truncate_seq; 4583d14c5d2SYehuda Sadeh ops[0].extent.truncate_size = truncate_size; 4593d14c5d2SYehuda Sadeh 4603d14c5d2SYehuda Sadeh if (do_sync) { 4613d14c5d2SYehuda Sadeh ops[1].op = CEPH_OSD_OP_STARTSYNC; 462ae7ca4a3SAlex Elder num_op++; 463ae7ca4a3SAlex Elder } 4643d14c5d2SYehuda Sadeh 465ae7ca4a3SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool, 466ae7ca4a3SAlex Elder GFP_NOFS); 4674ad12621SSage Weil if (!req) 4686816282dSSage Weil return ERR_PTR(-ENOMEM); 469d178a9e7SAlex Elder req->r_flags = flags; 4703d14c5d2SYehuda Sadeh 4713d14c5d2SYehuda Sadeh /* calculate max write size */ 472e75b45cfSAlex Elder r = calc_layout(vino, layout, off, plen, req, ops); 4736816282dSSage Weil if (r < 0) 4746816282dSSage Weil return ERR_PTR(r); 4753d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 4763d14c5d2SYehuda Sadeh 4779bb0ce2bSSage Weil /* in case it differs from natural (file) alignment that 4789bb0ce2bSSage Weil calc_layout filled in for us */ 4799bb0ce2bSSage Weil req->r_num_pages = calc_pages_for(page_align, *plen); 480b7495fc2SSage Weil req->r_page_alignment = page_align; 481b7495fc2SSage Weil 482ae7ca4a3SAlex Elder ceph_osdc_build_request(req, off, *plen, num_op, ops, 483ae7ca4a3SAlex Elder snapc, vino.snap, mtime); 4843d14c5d2SYehuda Sadeh 4853d14c5d2SYehuda Sadeh return req; 4863d14c5d2SYehuda Sadeh } 4873d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 4883d14c5d2SYehuda Sadeh 4893d14c5d2SYehuda Sadeh /* 4903d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 4913d14c5d2SYehuda Sadeh */ 4923d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 4933d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 4943d14c5d2SYehuda Sadeh { 4953d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 4963d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 4973d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 4983d14c5d2SYehuda Sadeh 4993d14c5d2SYehuda Sadeh while (*p) { 5003d14c5d2SYehuda Sadeh parent = *p; 5013d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 5023d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 5033d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 5043d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 5053d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 5063d14c5d2SYehuda Sadeh else 5073d14c5d2SYehuda Sadeh BUG(); 5083d14c5d2SYehuda Sadeh } 5093d14c5d2SYehuda Sadeh 5103d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 5113d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 5123d14c5d2SYehuda Sadeh } 5133d14c5d2SYehuda Sadeh 5143d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 5153d14c5d2SYehuda Sadeh u64 tid) 5163d14c5d2SYehuda Sadeh { 5173d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5183d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5193d14c5d2SYehuda Sadeh 5203d14c5d2SYehuda Sadeh while (n) { 5213d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5223d14c5d2SYehuda Sadeh if (tid < req->r_tid) 5233d14c5d2SYehuda Sadeh n = n->rb_left; 5243d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 5253d14c5d2SYehuda Sadeh n = n->rb_right; 5263d14c5d2SYehuda Sadeh else 5273d14c5d2SYehuda Sadeh return req; 5283d14c5d2SYehuda Sadeh } 5293d14c5d2SYehuda Sadeh return NULL; 5303d14c5d2SYehuda Sadeh } 5313d14c5d2SYehuda Sadeh 5323d14c5d2SYehuda Sadeh static struct ceph_osd_request * 5333d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 5343d14c5d2SYehuda Sadeh u64 tid) 5353d14c5d2SYehuda Sadeh { 5363d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5373d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5383d14c5d2SYehuda Sadeh 5393d14c5d2SYehuda Sadeh while (n) { 5403d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5413d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 5423d14c5d2SYehuda Sadeh if (!n->rb_left) 5433d14c5d2SYehuda Sadeh return req; 5443d14c5d2SYehuda Sadeh n = n->rb_left; 5453d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 5463d14c5d2SYehuda Sadeh n = n->rb_right; 5473d14c5d2SYehuda Sadeh } else { 5483d14c5d2SYehuda Sadeh return req; 5493d14c5d2SYehuda Sadeh } 5503d14c5d2SYehuda Sadeh } 5513d14c5d2SYehuda Sadeh return NULL; 5523d14c5d2SYehuda Sadeh } 5533d14c5d2SYehuda Sadeh 5546f6c7006SSage Weil /* 5556f6c7006SSage Weil * Resubmit requests pending on the given osd. 5566f6c7006SSage Weil */ 5576f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 5586f6c7006SSage Weil struct ceph_osd *osd) 5596f6c7006SSage Weil { 560a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 5616f6c7006SSage Weil int err; 5626f6c7006SSage Weil 5636f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 5646f6c7006SSage Weil err = __reset_osd(osdc, osd); 565685a7555SAlex Elder if (err) 5666f6c7006SSage Weil return; 5676f6c7006SSage Weil 5686f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 5696f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_unsent); 5706f6c7006SSage Weil dout("requeued %p tid %llu osd%d\n", req, req->r_tid, 5716f6c7006SSage Weil osd->o_osd); 572a40c4f10SYehuda Sadeh if (!req->r_linger) 5736f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 5746f6c7006SSage Weil } 575a40c4f10SYehuda Sadeh 576a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 577a40c4f10SYehuda Sadeh r_linger_osd) { 57877f38e0eSSage Weil /* 57977f38e0eSSage Weil * reregister request prior to unregistering linger so 58077f38e0eSSage Weil * that r_osd is preserved. 58177f38e0eSSage Weil */ 58277f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 583a40c4f10SYehuda Sadeh __register_request(osdc, req); 58477f38e0eSSage Weil list_add(&req->r_req_lru_item, &osdc->req_unsent); 58577f38e0eSSage Weil list_add(&req->r_osd_item, &req->r_osd->o_requests); 58677f38e0eSSage Weil __unregister_linger_request(osdc, req); 587a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 588a40c4f10SYehuda Sadeh osd->o_osd); 589a40c4f10SYehuda Sadeh } 5906f6c7006SSage Weil } 5916f6c7006SSage Weil 5923d14c5d2SYehuda Sadeh /* 5933d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 5943d14c5d2SYehuda Sadeh */ 5953d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 5963d14c5d2SYehuda Sadeh { 5973d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 5983d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 5993d14c5d2SYehuda Sadeh 6003d14c5d2SYehuda Sadeh if (!osd) 6013d14c5d2SYehuda Sadeh return; 6023d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 6033d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 6043d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 60583aff95eSSage Weil mutex_lock(&osdc->request_mutex); 60683aff95eSSage Weil __kick_osd_requests(osdc, osd); 607f9d25199SAlex Elder __send_queued(osdc); 60883aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 6093d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 6103d14c5d2SYehuda Sadeh } 6113d14c5d2SYehuda Sadeh 6123d14c5d2SYehuda Sadeh /* 6133d14c5d2SYehuda Sadeh * Track open sessions with osds. 6143d14c5d2SYehuda Sadeh */ 615e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 6163d14c5d2SYehuda Sadeh { 6173d14c5d2SYehuda Sadeh struct ceph_osd *osd; 6183d14c5d2SYehuda Sadeh 6193d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 6203d14c5d2SYehuda Sadeh if (!osd) 6213d14c5d2SYehuda Sadeh return NULL; 6223d14c5d2SYehuda Sadeh 6233d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 6243d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 625e10006f8SAlex Elder osd->o_osd = onum; 626f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 6273d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 628a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 6293d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 6303d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 6313d14c5d2SYehuda Sadeh 632b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 6333d14c5d2SYehuda Sadeh 6343d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 6353d14c5d2SYehuda Sadeh return osd; 6363d14c5d2SYehuda Sadeh } 6373d14c5d2SYehuda Sadeh 6383d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 6393d14c5d2SYehuda Sadeh { 6403d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 6413d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 6423d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 6433d14c5d2SYehuda Sadeh return osd; 6443d14c5d2SYehuda Sadeh } else { 6453d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 6463d14c5d2SYehuda Sadeh return NULL; 6473d14c5d2SYehuda Sadeh } 6483d14c5d2SYehuda Sadeh } 6493d14c5d2SYehuda Sadeh 6503d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 6513d14c5d2SYehuda Sadeh { 6523d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 6533d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 654a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 6553d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 6563d14c5d2SYehuda Sadeh 657a255651dSAlex Elder if (ac->ops && ac->ops->destroy_authorizer) 6586c4a1915SAlex Elder ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer); 6593d14c5d2SYehuda Sadeh kfree(osd); 6603d14c5d2SYehuda Sadeh } 6613d14c5d2SYehuda Sadeh } 6623d14c5d2SYehuda Sadeh 6633d14c5d2SYehuda Sadeh /* 6643d14c5d2SYehuda Sadeh * remove an osd from our map 6653d14c5d2SYehuda Sadeh */ 6663d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 6673d14c5d2SYehuda Sadeh { 6683d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 6693d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 6703d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 6713d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 6723d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 6733d14c5d2SYehuda Sadeh put_osd(osd); 6743d14c5d2SYehuda Sadeh } 6753d14c5d2SYehuda Sadeh 676aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 677aca420bcSSage Weil { 678048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 679aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 680aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 681aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 682aca420bcSSage Weil struct ceph_osd, o_node); 683aca420bcSSage Weil __remove_osd(osdc, osd); 684aca420bcSSage Weil } 685aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 686aca420bcSSage Weil } 687aca420bcSSage Weil 6883d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 6893d14c5d2SYehuda Sadeh struct ceph_osd *osd) 6903d14c5d2SYehuda Sadeh { 6913d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 6923d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 6933d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 6943d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 6953d14c5d2SYehuda Sadeh } 6963d14c5d2SYehuda Sadeh 6973d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 6983d14c5d2SYehuda Sadeh { 6993d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 7003d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 7013d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 7023d14c5d2SYehuda Sadeh } 7033d14c5d2SYehuda Sadeh 704aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 7053d14c5d2SYehuda Sadeh { 7063d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 7073d14c5d2SYehuda Sadeh 7083d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 7093d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 7103d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 711aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 7123d14c5d2SYehuda Sadeh break; 7133d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 7143d14c5d2SYehuda Sadeh } 7153d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 7163d14c5d2SYehuda Sadeh } 7173d14c5d2SYehuda Sadeh 7183d14c5d2SYehuda Sadeh /* 7193d14c5d2SYehuda Sadeh * reset osd connect 7203d14c5d2SYehuda Sadeh */ 7213d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 7223d14c5d2SYehuda Sadeh { 723c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 7243d14c5d2SYehuda Sadeh 7253d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 726a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 727a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 7283d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 729c3acb181SAlex Elder 730c3acb181SAlex Elder return -ENODEV; 731c3acb181SAlex Elder } 732c3acb181SAlex Elder 733c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 734c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 7353d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 736c3acb181SAlex Elder struct ceph_osd_request *req; 737c3acb181SAlex Elder 7383d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 7393d14c5d2SYehuda Sadeh " letting msgr retry"); 7403d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 7413d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 7423d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 743c3acb181SAlex Elder 744c3acb181SAlex Elder return -EAGAIN; 7453d14c5d2SYehuda Sadeh } 746c3acb181SAlex Elder 747c3acb181SAlex Elder ceph_con_close(&osd->o_con); 748c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 749c3acb181SAlex Elder osd->o_incarnation++; 750c3acb181SAlex Elder 751c3acb181SAlex Elder return 0; 7523d14c5d2SYehuda Sadeh } 7533d14c5d2SYehuda Sadeh 7543d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 7553d14c5d2SYehuda Sadeh { 7563d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 7573d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 7583d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 7593d14c5d2SYehuda Sadeh 760aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 7613d14c5d2SYehuda Sadeh while (*p) { 7623d14c5d2SYehuda Sadeh parent = *p; 7633d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 7643d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 7653d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 7663d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 7673d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 7683d14c5d2SYehuda Sadeh else 7693d14c5d2SYehuda Sadeh BUG(); 7703d14c5d2SYehuda Sadeh } 7713d14c5d2SYehuda Sadeh 7723d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 7733d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 7743d14c5d2SYehuda Sadeh } 7753d14c5d2SYehuda Sadeh 7763d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 7773d14c5d2SYehuda Sadeh { 7783d14c5d2SYehuda Sadeh struct ceph_osd *osd; 7793d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 7803d14c5d2SYehuda Sadeh 7813d14c5d2SYehuda Sadeh while (n) { 7823d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 7833d14c5d2SYehuda Sadeh if (o < osd->o_osd) 7843d14c5d2SYehuda Sadeh n = n->rb_left; 7853d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 7863d14c5d2SYehuda Sadeh n = n->rb_right; 7873d14c5d2SYehuda Sadeh else 7883d14c5d2SYehuda Sadeh return osd; 7893d14c5d2SYehuda Sadeh } 7903d14c5d2SYehuda Sadeh return NULL; 7913d14c5d2SYehuda Sadeh } 7923d14c5d2SYehuda Sadeh 7933d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 7943d14c5d2SYehuda Sadeh { 7953d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 7963d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 7973d14c5d2SYehuda Sadeh } 7983d14c5d2SYehuda Sadeh 7993d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 8003d14c5d2SYehuda Sadeh { 8013d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 8023d14c5d2SYehuda Sadeh } 8033d14c5d2SYehuda Sadeh 8043d14c5d2SYehuda Sadeh /* 8053d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 8063d14c5d2SYehuda Sadeh * the timeout event. 8073d14c5d2SYehuda Sadeh */ 808a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 8093d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8103d14c5d2SYehuda Sadeh { 8113d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 8123d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 81377f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 8143d14c5d2SYehuda Sadeh __insert_request(osdc, req); 8153d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 8163d14c5d2SYehuda Sadeh osdc->num_requests++; 8173d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 8183d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 8193d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 8203d14c5d2SYehuda Sadeh } 821a40c4f10SYehuda Sadeh } 822a40c4f10SYehuda Sadeh 823a40c4f10SYehuda Sadeh static void register_request(struct ceph_osd_client *osdc, 824a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 825a40c4f10SYehuda Sadeh { 826a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 827a40c4f10SYehuda Sadeh __register_request(osdc, req); 8283d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 8293d14c5d2SYehuda Sadeh } 8303d14c5d2SYehuda Sadeh 8313d14c5d2SYehuda Sadeh /* 8323d14c5d2SYehuda Sadeh * called under osdc->request_mutex 8333d14c5d2SYehuda Sadeh */ 8343d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 8353d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8363d14c5d2SYehuda Sadeh { 83735f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 83835f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 83935f9f8a0SSage Weil req, req->r_tid); 84035f9f8a0SSage Weil return; 84135f9f8a0SSage Weil } 84235f9f8a0SSage Weil 8433d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 8443d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 8453d14c5d2SYehuda Sadeh osdc->num_requests--; 8463d14c5d2SYehuda Sadeh 8473d14c5d2SYehuda Sadeh if (req->r_osd) { 8483d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 8496740a845SAlex Elder ceph_msg_revoke(req->r_request); 8503d14c5d2SYehuda Sadeh 8513d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 852a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 853a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 854a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 8553d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 856a40c4f10SYehuda Sadeh } 857fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 8583d14c5d2SYehuda Sadeh req->r_osd = NULL; 8593d14c5d2SYehuda Sadeh } 8603d14c5d2SYehuda Sadeh 8617d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 8623d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 8633d14c5d2SYehuda Sadeh 8643d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 8653d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 8663d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 8673d14c5d2SYehuda Sadeh } 8683d14c5d2SYehuda Sadeh } 8693d14c5d2SYehuda Sadeh 8703d14c5d2SYehuda Sadeh /* 8713d14c5d2SYehuda Sadeh * Cancel a previously queued request message 8723d14c5d2SYehuda Sadeh */ 8733d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 8743d14c5d2SYehuda Sadeh { 8753d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 8766740a845SAlex Elder ceph_msg_revoke(req->r_request); 8773d14c5d2SYehuda Sadeh req->r_sent = 0; 8783d14c5d2SYehuda Sadeh } 8793d14c5d2SYehuda Sadeh } 8803d14c5d2SYehuda Sadeh 881a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 882a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 883a40c4f10SYehuda Sadeh { 884a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 885a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 8866194ea89SSage Weil if (req->r_osd) 8876194ea89SSage Weil list_add_tail(&req->r_linger_osd, 8886194ea89SSage Weil &req->r_osd->o_linger_requests); 889a40c4f10SYehuda Sadeh } 890a40c4f10SYehuda Sadeh 891a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 892a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 893a40c4f10SYehuda Sadeh { 894a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 895a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 89661c74035SAlex Elder if (req->r_osd) { 897a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 898a40c4f10SYehuda Sadeh 899a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 900a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 901a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 902a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 903a40c4f10SYehuda Sadeh } 904fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 905a40c4f10SYehuda Sadeh req->r_osd = NULL; 906a40c4f10SYehuda Sadeh } 907a40c4f10SYehuda Sadeh } 908a40c4f10SYehuda Sadeh 909a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 910a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 911a40c4f10SYehuda Sadeh { 912a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 913a40c4f10SYehuda Sadeh if (req->r_linger) { 914a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 915a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 916a40c4f10SYehuda Sadeh } 917a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 918a40c4f10SYehuda Sadeh } 919a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 920a40c4f10SYehuda Sadeh 921a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 922a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 923a40c4f10SYehuda Sadeh { 924a40c4f10SYehuda Sadeh if (!req->r_linger) { 925a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 926a40c4f10SYehuda Sadeh req->r_linger = 1; 927a40c4f10SYehuda Sadeh /* 928a40c4f10SYehuda Sadeh * caller is now responsible for calling 929a40c4f10SYehuda Sadeh * unregister_linger_request 930a40c4f10SYehuda Sadeh */ 931a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 932a40c4f10SYehuda Sadeh } 933a40c4f10SYehuda Sadeh } 934a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 935a40c4f10SYehuda Sadeh 9363d14c5d2SYehuda Sadeh /* 9373d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 9383d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 93925985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 9406f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 9413d14c5d2SYehuda Sadeh * 9423d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 9433d14c5d2SYehuda Sadeh * 9443d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 9453d14c5d2SYehuda Sadeh */ 9466f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 94738d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 9483d14c5d2SYehuda Sadeh { 9495b191d99SSage Weil struct ceph_pg pgid; 9503d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 9513d14c5d2SYehuda Sadeh int o = -1, num = 0; 9523d14c5d2SYehuda Sadeh int err; 9533d14c5d2SYehuda Sadeh 9546f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 9552169aea6SSage Weil err = ceph_calc_object_layout(&pgid, req->r_oid, 9563d14c5d2SYehuda Sadeh &req->r_file_layout, osdc->osdmap); 9576f6c7006SSage Weil if (err) { 9586f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 9593d14c5d2SYehuda Sadeh return err; 9606f6c7006SSage Weil } 9613d14c5d2SYehuda Sadeh req->r_pgid = pgid; 9623d14c5d2SYehuda Sadeh 9633d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 9643d14c5d2SYehuda Sadeh if (err > 0) { 9653d14c5d2SYehuda Sadeh o = acting[0]; 9663d14c5d2SYehuda Sadeh num = err; 9673d14c5d2SYehuda Sadeh } 9683d14c5d2SYehuda Sadeh 96938d6453cSSage Weil if ((!force_resend && 97038d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 9713d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 9723d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 9733d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 9743d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 9753d14c5d2SYehuda Sadeh return 0; /* no change */ 9763d14c5d2SYehuda Sadeh 9775b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 9785b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 9793d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 9803d14c5d2SYehuda Sadeh 9813d14c5d2SYehuda Sadeh /* record full pg acting set */ 9823d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 9833d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 9843d14c5d2SYehuda Sadeh 9853d14c5d2SYehuda Sadeh if (req->r_osd) { 9863d14c5d2SYehuda Sadeh __cancel_request(req); 9873d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 9883d14c5d2SYehuda Sadeh req->r_osd = NULL; 9893d14c5d2SYehuda Sadeh } 9903d14c5d2SYehuda Sadeh 9913d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 9923d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 9933d14c5d2SYehuda Sadeh err = -ENOMEM; 994e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 9956f6c7006SSage Weil if (!req->r_osd) { 9966f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 9973d14c5d2SYehuda Sadeh goto out; 9986f6c7006SSage Weil } 9993d14c5d2SYehuda Sadeh 10006f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 10013d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 10023d14c5d2SYehuda Sadeh 1003b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1004b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1005b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 10063d14c5d2SYehuda Sadeh } 10073d14c5d2SYehuda Sadeh 10083d14c5d2SYehuda Sadeh if (req->r_osd) { 10093d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 10103d14c5d2SYehuda Sadeh list_add(&req->r_osd_item, &req->r_osd->o_requests); 10116f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_unsent); 10126f6c7006SSage Weil } else { 10136f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10143d14c5d2SYehuda Sadeh } 10153d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 10163d14c5d2SYehuda Sadeh 10173d14c5d2SYehuda Sadeh out: 10183d14c5d2SYehuda Sadeh return err; 10193d14c5d2SYehuda Sadeh } 10203d14c5d2SYehuda Sadeh 10213d14c5d2SYehuda Sadeh /* 10223d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 10233d14c5d2SYehuda Sadeh */ 102456e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 10253d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10263d14c5d2SYehuda Sadeh { 10271b83bef2SSage Weil void *p; 10283d14c5d2SYehuda Sadeh 10291b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 10301b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 10311b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 10323d14c5d2SYehuda Sadeh 10331b83bef2SSage Weil /* fill in message content that changes each time we send it */ 10341b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 10351b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 10361b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 10371b83bef2SSage Weil p = req->r_request_pgid; 10381b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 10391b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 10401b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 10411b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 10421b83bef2SSage Weil sizeof(req->r_reassert_version)); 10432169aea6SSage Weil 10443d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 10453d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 10463d14c5d2SYehuda Sadeh 10473d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 10483d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 10493d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 10503d14c5d2SYehuda Sadeh } 10513d14c5d2SYehuda Sadeh 10523d14c5d2SYehuda Sadeh /* 10536f6c7006SSage Weil * Send any requests in the queue (req_unsent). 10546f6c7006SSage Weil */ 1055f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 10566f6c7006SSage Weil { 10576f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 10586f6c7006SSage Weil 1059f9d25199SAlex Elder dout("__send_queued\n"); 1060f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 10616f6c7006SSage Weil __send_request(osdc, req); 10626f6c7006SSage Weil } 10636f6c7006SSage Weil 10646f6c7006SSage Weil /* 10653d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 10663d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 10673d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 10683d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 10693d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 10703d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 10713d14c5d2SYehuda Sadeh * there are no open requests). 10723d14c5d2SYehuda Sadeh */ 10733d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 10743d14c5d2SYehuda Sadeh { 10753d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 10763d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 107783aff95eSSage Weil struct ceph_osd_request *req; 10783d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10793d14c5d2SYehuda Sadeh unsigned long keepalive = 10803d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 10813d14c5d2SYehuda Sadeh struct list_head slow_osds; 10823d14c5d2SYehuda Sadeh dout("timeout\n"); 10833d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 10843d14c5d2SYehuda Sadeh 10853d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 10863d14c5d2SYehuda Sadeh 10873d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 10883d14c5d2SYehuda Sadeh 10893d14c5d2SYehuda Sadeh /* 10903d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 10913d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 10923d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 10933d14c5d2SYehuda Sadeh */ 10943d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 10953d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 10963d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 10973d14c5d2SYehuda Sadeh break; 10983d14c5d2SYehuda Sadeh 10993d14c5d2SYehuda Sadeh osd = req->r_osd; 11003d14c5d2SYehuda Sadeh BUG_ON(!osd); 11013d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 11023d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 11033d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 11043d14c5d2SYehuda Sadeh } 11053d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 11063d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 11073d14c5d2SYehuda Sadeh o_keepalive_item); 11083d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 11093d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 11103d14c5d2SYehuda Sadeh } 11113d14c5d2SYehuda Sadeh 11123d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1113f9d25199SAlex Elder __send_queued(osdc); 11143d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11153d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 11163d14c5d2SYehuda Sadeh } 11173d14c5d2SYehuda Sadeh 11183d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 11193d14c5d2SYehuda Sadeh { 11203d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 11213d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 11223d14c5d2SYehuda Sadeh osds_timeout_work.work); 11233d14c5d2SYehuda Sadeh unsigned long delay = 11243d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 11253d14c5d2SYehuda Sadeh 11263d14c5d2SYehuda Sadeh dout("osds timeout\n"); 11273d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1128aca420bcSSage Weil remove_old_osds(osdc); 11293d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 11303d14c5d2SYehuda Sadeh 11313d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 11323d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 11333d14c5d2SYehuda Sadeh } 11343d14c5d2SYehuda Sadeh 113525845472SSage Weil static void complete_request(struct ceph_osd_request *req) 113625845472SSage Weil { 113725845472SSage Weil if (req->r_safe_callback) 113825845472SSage Weil req->r_safe_callback(req, NULL); 113925845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 114025845472SSage Weil } 114125845472SSage Weil 11421b83bef2SSage Weil static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid) 11431b83bef2SSage Weil { 11441b83bef2SSage Weil __u8 v; 11451b83bef2SSage Weil 11461b83bef2SSage Weil ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad); 11471b83bef2SSage Weil v = ceph_decode_8(p); 11481b83bef2SSage Weil if (v > 1) { 11491b83bef2SSage Weil pr_warning("do not understand pg encoding %d > 1", v); 11501b83bef2SSage Weil return -EINVAL; 11511b83bef2SSage Weil } 11521b83bef2SSage Weil pgid->pool = ceph_decode_64(p); 11531b83bef2SSage Weil pgid->seed = ceph_decode_32(p); 11541b83bef2SSage Weil *p += 4; 11551b83bef2SSage Weil return 0; 11561b83bef2SSage Weil 11571b83bef2SSage Weil bad: 11581b83bef2SSage Weil pr_warning("incomplete pg encoding"); 11591b83bef2SSage Weil return -EINVAL; 11601b83bef2SSage Weil } 11611b83bef2SSage Weil 11623d14c5d2SYehuda Sadeh /* 11633d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 11643d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 11653d14c5d2SYehuda Sadeh */ 11663d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 11673d14c5d2SYehuda Sadeh struct ceph_connection *con) 11683d14c5d2SYehuda Sadeh { 11691b83bef2SSage Weil void *p, *end; 11703d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 11713d14c5d2SYehuda Sadeh u64 tid; 11721b83bef2SSage Weil int object_len; 11731b83bef2SSage Weil int numops, payload_len, flags; 11743d14c5d2SYehuda Sadeh s32 result; 11751b83bef2SSage Weil s32 retry_attempt; 11761b83bef2SSage Weil struct ceph_pg pg; 11771b83bef2SSage Weil int err; 11781b83bef2SSage Weil u32 reassert_epoch; 11791b83bef2SSage Weil u64 reassert_version; 11801b83bef2SSage Weil u32 osdmap_epoch; 11811b83bef2SSage Weil int i; 11823d14c5d2SYehuda Sadeh 11833d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 11841b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 11851b83bef2SSage Weil 11861b83bef2SSage Weil p = msg->front.iov_base; 11871b83bef2SSage Weil end = p + msg->front.iov_len; 11881b83bef2SSage Weil 11891b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 11901b83bef2SSage Weil object_len = ceph_decode_32(&p); 11911b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 11921b83bef2SSage Weil p += object_len; 11931b83bef2SSage Weil 11941b83bef2SSage Weil err = __decode_pgid(&p, end, &pg); 11951b83bef2SSage Weil if (err) 11963d14c5d2SYehuda Sadeh goto bad; 11971b83bef2SSage Weil 11981b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 11991b83bef2SSage Weil flags = ceph_decode_64(&p); 12001b83bef2SSage Weil result = ceph_decode_32(&p); 12011b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 12021b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 12031b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 12041b83bef2SSage Weil 12053d14c5d2SYehuda Sadeh /* lookup */ 12063d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12073d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 12083d14c5d2SYehuda Sadeh if (req == NULL) { 12093d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 12103d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12113d14c5d2SYehuda Sadeh return; 12123d14c5d2SYehuda Sadeh } 12133d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12141b83bef2SSage Weil 12151b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 12161b83bef2SSage Weil req, result); 12171b83bef2SSage Weil 12181b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 12191b83bef2SSage Weil numops = ceph_decode_32(&p); 12201b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 12211b83bef2SSage Weil goto bad_put; 12221b83bef2SSage Weil if (numops != req->r_num_ops) 12231b83bef2SSage Weil goto bad_put; 12241b83bef2SSage Weil payload_len = 0; 12251b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 12261b83bef2SSage Weil for (i = 0; i < numops; i++) { 12271b83bef2SSage Weil struct ceph_osd_op *op = p; 12281b83bef2SSage Weil int len; 12291b83bef2SSage Weil 12301b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 12311b83bef2SSage Weil req->r_reply_op_len[i] = len; 12321b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 12331b83bef2SSage Weil payload_len += len; 12341b83bef2SSage Weil p += sizeof(*op); 12351b83bef2SSage Weil } 12361b83bef2SSage Weil if (payload_len != le32_to_cpu(msg->hdr.data_len)) { 12371b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 12381b83bef2SSage Weil payload_len, le32_to_cpu(msg->hdr.data_len)); 12391b83bef2SSage Weil goto bad_put; 12401b83bef2SSage Weil } 12411b83bef2SSage Weil 12421b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 12431b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 12441b83bef2SSage Weil for (i = 0; i < numops; i++) 12451b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 12463d14c5d2SYehuda Sadeh 12473d14c5d2SYehuda Sadeh /* 12483d14c5d2SYehuda Sadeh * if this connection filled our message, drop our reference now, to 12493d14c5d2SYehuda Sadeh * avoid a (safe but slower) revoke later. 12503d14c5d2SYehuda Sadeh */ 12513d14c5d2SYehuda Sadeh if (req->r_con_filling_msg == con && req->r_reply == msg) { 12523d14c5d2SYehuda Sadeh dout(" dropping con_filling_msg ref %p\n", con); 12533d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 12540d47766fSSage Weil con->ops->put(con); 12553d14c5d2SYehuda Sadeh } 12563d14c5d2SYehuda Sadeh 12573d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 125895c96174SEric Dumazet unsigned int bytes; 12593d14c5d2SYehuda Sadeh 12601b83bef2SSage Weil req->r_result = result; 12613d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 12623d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 12633d14c5d2SYehuda Sadeh bytes); 12643d14c5d2SYehuda Sadeh if (req->r_result == 0) 12653d14c5d2SYehuda Sadeh req->r_result = bytes; 12663d14c5d2SYehuda Sadeh 12673d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 12681b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 12691b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 12703d14c5d2SYehuda Sadeh 12713d14c5d2SYehuda Sadeh req->r_got_reply = 1; 12723d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 12733d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 12743d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12753d14c5d2SYehuda Sadeh goto done; 12763d14c5d2SYehuda Sadeh } 12773d14c5d2SYehuda Sadeh 12783d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 12793d14c5d2SYehuda Sadeh 1280a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1281a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1282a40c4f10SYehuda Sadeh 12833d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 12843d14c5d2SYehuda Sadeh if (result < 0 || 12853d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 12863d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 12873d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 12883d14c5d2SYehuda Sadeh 12893d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12903d14c5d2SYehuda Sadeh 12913d14c5d2SYehuda Sadeh if (req->r_callback) 12923d14c5d2SYehuda Sadeh req->r_callback(req, msg); 12933d14c5d2SYehuda Sadeh else 12943d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 12953d14c5d2SYehuda Sadeh 129625845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 129725845472SSage Weil complete_request(req); 12983d14c5d2SYehuda Sadeh 12993d14c5d2SYehuda Sadeh done: 1300a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 13013d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 13023d14c5d2SYehuda Sadeh return; 13033d14c5d2SYehuda Sadeh 13041b83bef2SSage Weil bad_put: 13051b83bef2SSage Weil ceph_osdc_put_request(req); 13063d14c5d2SYehuda Sadeh bad: 13071b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 13081b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 13093d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 13103d14c5d2SYehuda Sadeh } 13113d14c5d2SYehuda Sadeh 13126f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 13133d14c5d2SYehuda Sadeh { 13143d14c5d2SYehuda Sadeh struct rb_node *p, *n; 13153d14c5d2SYehuda Sadeh 13163d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 13176f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 13183d14c5d2SYehuda Sadeh 13193d14c5d2SYehuda Sadeh n = rb_next(p); 13203d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 13213d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 13223d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 13233d14c5d2SYehuda Sadeh osd->o_osd), 13243d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 13253d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 13263d14c5d2SYehuda Sadeh } 13273d14c5d2SYehuda Sadeh } 13283d14c5d2SYehuda Sadeh 13293d14c5d2SYehuda Sadeh /* 13306f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 13316f6c7006SSage Weil * no osd, request a new map. 13323d14c5d2SYehuda Sadeh * 1333e6d50f67SAlex Elder * Caller should hold map_sem for read. 13343d14c5d2SYehuda Sadeh */ 133538d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 13363d14c5d2SYehuda Sadeh { 1337a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 13386f6c7006SSage Weil struct rb_node *p; 13396f6c7006SSage Weil int needmap = 0; 13406f6c7006SSage Weil int err; 13413d14c5d2SYehuda Sadeh 134238d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 13433d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13446194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 13456f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 13466194ea89SSage Weil p = rb_next(p); 1347ab60b16dSAlex Elder 1348ab60b16dSAlex Elder /* 1349ab60b16dSAlex Elder * For linger requests that have not yet been 1350ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1351ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1352ab60b16dSAlex Elder * the request before re-registering it as a linger 1353ab60b16dSAlex Elder * request to ensure the __map_request() below 1354ab60b16dSAlex Elder * will decide it needs to be sent. 1355ab60b16dSAlex Elder */ 1356ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1357ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1358ab60b16dSAlex Elder req, req->r_tid, 1359ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1360ab60b16dSAlex Elder __unregister_request(osdc, req); 1361ab60b16dSAlex Elder __register_linger_request(osdc, req); 1362ab60b16dSAlex Elder continue; 1363ab60b16dSAlex Elder } 1364ab60b16dSAlex Elder 136538d6453cSSage Weil err = __map_request(osdc, req, force_resend); 13666f6c7006SSage Weil if (err < 0) 13676f6c7006SSage Weil continue; /* error */ 13686f6c7006SSage Weil if (req->r_osd == NULL) { 13696f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 13706f6c7006SSage Weil needmap++; /* request a newer map */ 13716f6c7006SSage Weil } else if (err > 0) { 13726194ea89SSage Weil if (!req->r_linger) { 13736194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 13746194ea89SSage Weil req->r_tid, 13756f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 13766f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 13776f6c7006SSage Weil } 13786f6c7006SSage Weil } 13796194ea89SSage Weil } 1380a40c4f10SYehuda Sadeh 1381a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1382a40c4f10SYehuda Sadeh r_linger_item) { 1383a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1384a40c4f10SYehuda Sadeh 138538d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1386ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1387a40c4f10SYehuda Sadeh if (err == 0) 1388a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1389a40c4f10SYehuda Sadeh if (err < 0) 1390a40c4f10SYehuda Sadeh continue; /* hrm! */ 1391a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1392a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1393a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1394a40c4f10SYehuda Sadeh continue; 1395a40c4f10SYehuda Sadeh } 1396a40c4f10SYehuda Sadeh 1397a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1398a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1399a40c4f10SYehuda Sadeh __register_request(osdc, req); 1400c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1401a40c4f10SYehuda Sadeh } 14023d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14033d14c5d2SYehuda Sadeh 14043d14c5d2SYehuda Sadeh if (needmap) { 14053d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 14063d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 14073d14c5d2SYehuda Sadeh } 1408e6d50f67SAlex Elder reset_changed_osds(osdc); 14093d14c5d2SYehuda Sadeh } 14106f6c7006SSage Weil 14116f6c7006SSage Weil 14123d14c5d2SYehuda Sadeh /* 14133d14c5d2SYehuda Sadeh * Process updated osd map. 14143d14c5d2SYehuda Sadeh * 14153d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 14163d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 14173d14c5d2SYehuda Sadeh * off to different OSDs as needed. 14183d14c5d2SYehuda Sadeh */ 14193d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 14203d14c5d2SYehuda Sadeh { 14213d14c5d2SYehuda Sadeh void *p, *end, *next; 14223d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 14233d14c5d2SYehuda Sadeh u32 epoch; 14243d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 14253d14c5d2SYehuda Sadeh int err; 14263d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 14273d14c5d2SYehuda Sadeh 14283d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 14293d14c5d2SYehuda Sadeh p = msg->front.iov_base; 14303d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 14313d14c5d2SYehuda Sadeh 14323d14c5d2SYehuda Sadeh /* verify fsid */ 14333d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 14343d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 14353d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 14363d14c5d2SYehuda Sadeh return; 14373d14c5d2SYehuda Sadeh 14383d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 14393d14c5d2SYehuda Sadeh 14403d14c5d2SYehuda Sadeh /* incremental maps */ 14413d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 14423d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 14433d14c5d2SYehuda Sadeh while (nr_maps > 0) { 14443d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 14453d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 14463d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 14473d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 14483d14c5d2SYehuda Sadeh next = p + maplen; 14493d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 14503d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 14513d14c5d2SYehuda Sadeh epoch, maplen); 14523d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 14533d14c5d2SYehuda Sadeh osdc->osdmap, 145415d9882cSAlex Elder &osdc->client->msgr); 14553d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 14563d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 14573d14c5d2SYehuda Sadeh goto bad; 14583d14c5d2SYehuda Sadeh } 14593d14c5d2SYehuda Sadeh BUG_ON(!newmap); 14603d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 14613d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 14623d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 14633d14c5d2SYehuda Sadeh } 146438d6453cSSage Weil kick_requests(osdc, 0); 14653d14c5d2SYehuda Sadeh } else { 14663d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 14673d14c5d2SYehuda Sadeh epoch, maplen); 14683d14c5d2SYehuda Sadeh } 14693d14c5d2SYehuda Sadeh p = next; 14703d14c5d2SYehuda Sadeh nr_maps--; 14713d14c5d2SYehuda Sadeh } 14723d14c5d2SYehuda Sadeh if (newmap) 14733d14c5d2SYehuda Sadeh goto done; 14743d14c5d2SYehuda Sadeh 14753d14c5d2SYehuda Sadeh /* full maps */ 14763d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 14773d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 14783d14c5d2SYehuda Sadeh while (nr_maps) { 14793d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 14803d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 14813d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 14823d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 14833d14c5d2SYehuda Sadeh if (nr_maps > 1) { 14843d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 14853d14c5d2SYehuda Sadeh epoch, maplen); 14863d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 14873d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 14883d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 14893d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 14903d14c5d2SYehuda Sadeh } else { 149138d6453cSSage Weil int skipped_map = 0; 149238d6453cSSage Weil 14933d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 14943d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 14953d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 14963d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 14973d14c5d2SYehuda Sadeh goto bad; 14983d14c5d2SYehuda Sadeh } 14993d14c5d2SYehuda Sadeh BUG_ON(!newmap); 15003d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 15013d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 150238d6453cSSage Weil if (oldmap) { 150338d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 150438d6453cSSage Weil skipped_map = 1; 15053d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 150638d6453cSSage Weil } 150738d6453cSSage Weil kick_requests(osdc, skipped_map); 15083d14c5d2SYehuda Sadeh } 15093d14c5d2SYehuda Sadeh p += maplen; 15103d14c5d2SYehuda Sadeh nr_maps--; 15113d14c5d2SYehuda Sadeh } 15123d14c5d2SYehuda Sadeh 15133d14c5d2SYehuda Sadeh done: 15143d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 15153d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1516cd634fb6SSage Weil 1517cd634fb6SSage Weil /* 1518cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1519cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1520cd634fb6SSage Weil * ENOSPC. 1521cd634fb6SSage Weil */ 1522cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1523cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1524cd634fb6SSage Weil 1525f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1526f9d25199SAlex Elder __send_queued(osdc); 1527f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 15283d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 15293d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 15303d14c5d2SYehuda Sadeh return; 15313d14c5d2SYehuda Sadeh 15323d14c5d2SYehuda Sadeh bad: 15333d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 15343d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 15353d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 15363d14c5d2SYehuda Sadeh return; 15373d14c5d2SYehuda Sadeh } 15383d14c5d2SYehuda Sadeh 15393d14c5d2SYehuda Sadeh /* 1540a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1541a40c4f10SYehuda Sadeh * 1542a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1543a40c4f10SYehuda Sadeh */ 1544a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1545a40c4f10SYehuda Sadeh { 1546a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1547a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1548a40c4f10SYehuda Sadeh 1549a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1550a40c4f10SYehuda Sadeh kfree(event); 1551a40c4f10SYehuda Sadeh } 1552a40c4f10SYehuda Sadeh 1553a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1554a40c4f10SYehuda Sadeh { 1555a40c4f10SYehuda Sadeh kref_get(&event->kref); 1556a40c4f10SYehuda Sadeh } 1557a40c4f10SYehuda Sadeh 1558a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1559a40c4f10SYehuda Sadeh { 1560a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1561a40c4f10SYehuda Sadeh } 1562a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1563a40c4f10SYehuda Sadeh 1564a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1565a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1566a40c4f10SYehuda Sadeh { 1567a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1568a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1569a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1570a40c4f10SYehuda Sadeh 1571a40c4f10SYehuda Sadeh while (*p) { 1572a40c4f10SYehuda Sadeh parent = *p; 1573a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1574a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1575a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1576a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1577a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1578a40c4f10SYehuda Sadeh else 1579a40c4f10SYehuda Sadeh BUG(); 1580a40c4f10SYehuda Sadeh } 1581a40c4f10SYehuda Sadeh 1582a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1583a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1584a40c4f10SYehuda Sadeh } 1585a40c4f10SYehuda Sadeh 1586a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1587a40c4f10SYehuda Sadeh u64 cookie) 1588a40c4f10SYehuda Sadeh { 1589a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1590a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1591a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1592a40c4f10SYehuda Sadeh 1593a40c4f10SYehuda Sadeh while (*p) { 1594a40c4f10SYehuda Sadeh parent = *p; 1595a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1596a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1597a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1598a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1599a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1600a40c4f10SYehuda Sadeh else 1601a40c4f10SYehuda Sadeh return event; 1602a40c4f10SYehuda Sadeh } 1603a40c4f10SYehuda Sadeh return NULL; 1604a40c4f10SYehuda Sadeh } 1605a40c4f10SYehuda Sadeh 1606a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1607a40c4f10SYehuda Sadeh { 1608a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1609a40c4f10SYehuda Sadeh 1610a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1611a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1612a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1613a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1614a40c4f10SYehuda Sadeh } else { 1615a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1616a40c4f10SYehuda Sadeh } 1617a40c4f10SYehuda Sadeh } 1618a40c4f10SYehuda Sadeh 1619a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1620a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 16213c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1622a40c4f10SYehuda Sadeh { 1623a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1624a40c4f10SYehuda Sadeh 1625a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1626a40c4f10SYehuda Sadeh if (!event) 1627a40c4f10SYehuda Sadeh return -ENOMEM; 1628a40c4f10SYehuda Sadeh 1629a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1630a40c4f10SYehuda Sadeh event->cb = event_cb; 16313c663bbdSAlex Elder event->one_shot = 0; 1632a40c4f10SYehuda Sadeh event->data = data; 1633a40c4f10SYehuda Sadeh event->osdc = osdc; 1634a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 16353ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1636a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1637a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1638a40c4f10SYehuda Sadeh 1639a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1640a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1641a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1642a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1643a40c4f10SYehuda Sadeh 1644a40c4f10SYehuda Sadeh *pevent = event; 1645a40c4f10SYehuda Sadeh return 0; 1646a40c4f10SYehuda Sadeh } 1647a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1648a40c4f10SYehuda Sadeh 1649a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1650a40c4f10SYehuda Sadeh { 1651a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1652a40c4f10SYehuda Sadeh 1653a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1654a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1655a40c4f10SYehuda Sadeh __remove_event(event); 1656a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1657a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1658a40c4f10SYehuda Sadeh } 1659a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1660a40c4f10SYehuda Sadeh 1661a40c4f10SYehuda Sadeh 1662a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1663a40c4f10SYehuda Sadeh { 1664a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1665a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1666a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1667a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1668a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1669a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1670a40c4f10SYehuda Sadeh 1671a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1672a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1673a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1674a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1675a40c4f10SYehuda Sadeh kfree(event_work); 1676a40c4f10SYehuda Sadeh } 1677a40c4f10SYehuda Sadeh 1678a40c4f10SYehuda Sadeh 1679a40c4f10SYehuda Sadeh /* 1680a40c4f10SYehuda Sadeh * Process osd watch notifications 1681a40c4f10SYehuda Sadeh */ 16823c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 16833c663bbdSAlex Elder struct ceph_msg *msg) 1684a40c4f10SYehuda Sadeh { 1685a40c4f10SYehuda Sadeh void *p, *end; 1686a40c4f10SYehuda Sadeh u8 proto_ver; 1687a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1688a40c4f10SYehuda Sadeh u8 opcode; 1689a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1690a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1691a40c4f10SYehuda Sadeh 1692a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1693a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1694a40c4f10SYehuda Sadeh 1695a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1696a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1697a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1698a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1699a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1700a40c4f10SYehuda Sadeh 1701a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1702a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1703a40c4f10SYehuda Sadeh if (event) { 17043c663bbdSAlex Elder BUG_ON(event->one_shot); 1705a40c4f10SYehuda Sadeh get_event(event); 1706a40c4f10SYehuda Sadeh } 1707a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1708a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1709a40c4f10SYehuda Sadeh cookie, ver, event); 1710a40c4f10SYehuda Sadeh if (event) { 1711a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1712a40c4f10SYehuda Sadeh if (!event_work) { 1713a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1714a40c4f10SYehuda Sadeh goto done_err; 1715a40c4f10SYehuda Sadeh } 17166b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1717a40c4f10SYehuda Sadeh event_work->event = event; 1718a40c4f10SYehuda Sadeh event_work->ver = ver; 1719a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1720a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1721a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1722a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1723a40c4f10SYehuda Sadeh goto done_err; 1724a40c4f10SYehuda Sadeh } 1725a40c4f10SYehuda Sadeh } 1726a40c4f10SYehuda Sadeh 1727a40c4f10SYehuda Sadeh return; 1728a40c4f10SYehuda Sadeh 1729a40c4f10SYehuda Sadeh done_err: 1730a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1731a40c4f10SYehuda Sadeh return; 1732a40c4f10SYehuda Sadeh 1733a40c4f10SYehuda Sadeh bad: 1734a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1735a40c4f10SYehuda Sadeh return; 1736a40c4f10SYehuda Sadeh } 1737a40c4f10SYehuda Sadeh 1738a40c4f10SYehuda Sadeh /* 17393d14c5d2SYehuda Sadeh * Register request, send initial attempt. 17403d14c5d2SYehuda Sadeh */ 17413d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 17423d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 17433d14c5d2SYehuda Sadeh bool nofail) 17443d14c5d2SYehuda Sadeh { 17453d14c5d2SYehuda Sadeh int rc = 0; 17463d14c5d2SYehuda Sadeh 17473d14c5d2SYehuda Sadeh req->r_request->pages = req->r_pages; 17483d14c5d2SYehuda Sadeh req->r_request->nr_pages = req->r_num_pages; 17493d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 17503d14c5d2SYehuda Sadeh req->r_request->bio = req->r_bio; 17513d14c5d2SYehuda Sadeh #endif 1752c885837fSAlex Elder req->r_request->trail = &req->r_trail; 17533d14c5d2SYehuda Sadeh 17543d14c5d2SYehuda Sadeh register_request(osdc, req); 17553d14c5d2SYehuda Sadeh 17563d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 17573d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17583d14c5d2SYehuda Sadeh /* 17593d14c5d2SYehuda Sadeh * a racing kick_requests() may have sent the message for us 17603d14c5d2SYehuda Sadeh * while we dropped request_mutex above, so only send now if 17613d14c5d2SYehuda Sadeh * the request still han't been touched yet. 17623d14c5d2SYehuda Sadeh */ 17633d14c5d2SYehuda Sadeh if (req->r_sent == 0) { 176438d6453cSSage Weil rc = __map_request(osdc, req, 0); 17659d6fcb08SSage Weil if (rc < 0) { 17669d6fcb08SSage Weil if (nofail) { 17679d6fcb08SSage Weil dout("osdc_start_request failed map, " 17689d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 17699d6fcb08SSage Weil rc = 0; 17709d6fcb08SSage Weil } 1771234af26fSDan Carpenter goto out_unlock; 17729d6fcb08SSage Weil } 17736f6c7006SSage Weil if (req->r_osd == NULL) { 17746f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 17756f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 17766f6c7006SSage Weil } else { 177756e925b6SSage Weil __send_request(osdc, req); 177856e925b6SSage Weil } 17793d14c5d2SYehuda Sadeh rc = 0; 17806f6c7006SSage Weil } 1781234af26fSDan Carpenter 1782234af26fSDan Carpenter out_unlock: 17833d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 17843d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 17853d14c5d2SYehuda Sadeh return rc; 17863d14c5d2SYehuda Sadeh } 17873d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 17883d14c5d2SYehuda Sadeh 17893d14c5d2SYehuda Sadeh /* 17903d14c5d2SYehuda Sadeh * wait for a request to complete 17913d14c5d2SYehuda Sadeh */ 17923d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 17933d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 17943d14c5d2SYehuda Sadeh { 17953d14c5d2SYehuda Sadeh int rc; 17963d14c5d2SYehuda Sadeh 17973d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 17983d14c5d2SYehuda Sadeh if (rc < 0) { 17993d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18003d14c5d2SYehuda Sadeh __cancel_request(req); 18013d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 18023d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 180325845472SSage Weil complete_request(req); 18043d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 18053d14c5d2SYehuda Sadeh return rc; 18063d14c5d2SYehuda Sadeh } 18073d14c5d2SYehuda Sadeh 18083d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 18093d14c5d2SYehuda Sadeh return req->r_result; 18103d14c5d2SYehuda Sadeh } 18113d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 18123d14c5d2SYehuda Sadeh 18133d14c5d2SYehuda Sadeh /* 18143d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 18153d14c5d2SYehuda Sadeh */ 18163d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 18173d14c5d2SYehuda Sadeh { 18183d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 18193d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 18203d14c5d2SYehuda Sadeh 18213d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18223d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 18233d14c5d2SYehuda Sadeh while (1) { 18243d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 18253d14c5d2SYehuda Sadeh if (!req) 18263d14c5d2SYehuda Sadeh break; 18273d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 18283d14c5d2SYehuda Sadeh break; 18293d14c5d2SYehuda Sadeh 18303d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 18313d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 18323d14c5d2SYehuda Sadeh continue; 18333d14c5d2SYehuda Sadeh 18343d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 18353d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 18363d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 18373d14c5d2SYehuda Sadeh req->r_tid, last_tid); 18383d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 18393d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18403d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 18413d14c5d2SYehuda Sadeh } 18423d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 18433d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 18443d14c5d2SYehuda Sadeh } 18453d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 18463d14c5d2SYehuda Sadeh 18473d14c5d2SYehuda Sadeh /* 18483d14c5d2SYehuda Sadeh * init, shutdown 18493d14c5d2SYehuda Sadeh */ 18503d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 18513d14c5d2SYehuda Sadeh { 18523d14c5d2SYehuda Sadeh int err; 18533d14c5d2SYehuda Sadeh 18543d14c5d2SYehuda Sadeh dout("init\n"); 18553d14c5d2SYehuda Sadeh osdc->client = client; 18563d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 18573d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 18583d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 18593d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 18603d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 18613d14c5d2SYehuda Sadeh osdc->last_tid = 0; 18623d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 18633d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 18643d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 18653d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 18666f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 18676f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 1868a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 18693d14c5d2SYehuda Sadeh osdc->num_requests = 0; 18703d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 18713d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 1872a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 1873a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 1874a40c4f10SYehuda Sadeh osdc->event_count = 0; 18753d14c5d2SYehuda Sadeh 18763d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 18773d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 18783d14c5d2SYehuda Sadeh 18793d14c5d2SYehuda Sadeh err = -ENOMEM; 18803d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 18813d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 18823d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 18833d14c5d2SYehuda Sadeh goto out; 18843d14c5d2SYehuda Sadeh 1885d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 1886d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 18873d14c5d2SYehuda Sadeh "osd_op"); 18883d14c5d2SYehuda Sadeh if (err < 0) 18893d14c5d2SYehuda Sadeh goto out_mempool; 1890d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 18913d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 18923d14c5d2SYehuda Sadeh "osd_op_reply"); 18933d14c5d2SYehuda Sadeh if (err < 0) 18943d14c5d2SYehuda Sadeh goto out_msgpool; 1895a40c4f10SYehuda Sadeh 1896a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 1897a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 1898a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 1899a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 1900a40c4f10SYehuda Sadeh goto out_msgpool; 1901a40c4f10SYehuda Sadeh } 19023d14c5d2SYehuda Sadeh return 0; 19033d14c5d2SYehuda Sadeh 19043d14c5d2SYehuda Sadeh out_msgpool: 19053d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 19063d14c5d2SYehuda Sadeh out_mempool: 19073d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 19083d14c5d2SYehuda Sadeh out: 19093d14c5d2SYehuda Sadeh return err; 19103d14c5d2SYehuda Sadeh } 19113d14c5d2SYehuda Sadeh 19123d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 19133d14c5d2SYehuda Sadeh { 1914a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 1915a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 19163d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 19173d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 19183d14c5d2SYehuda Sadeh if (osdc->osdmap) { 19193d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 19203d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 19213d14c5d2SYehuda Sadeh } 1922aca420bcSSage Weil remove_all_osds(osdc); 19233d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 19243d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 19253d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 19263d14c5d2SYehuda Sadeh } 19273d14c5d2SYehuda Sadeh 19283d14c5d2SYehuda Sadeh /* 19293d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 19303d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 19313d14c5d2SYehuda Sadeh */ 19323d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 19333d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 19343d14c5d2SYehuda Sadeh u64 off, u64 *plen, 19353d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 1936b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 19373d14c5d2SYehuda Sadeh { 19383d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19393d14c5d2SYehuda Sadeh int rc = 0; 19403d14c5d2SYehuda Sadeh 19413d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 19423d14c5d2SYehuda Sadeh vino.snap, off, *plen); 19433d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 19443d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 19453d14c5d2SYehuda Sadeh NULL, 0, truncate_seq, truncate_size, NULL, 1946a3bea47eSAlex Elder false, page_align); 19476816282dSSage Weil if (IS_ERR(req)) 19486816282dSSage Weil return PTR_ERR(req); 19493d14c5d2SYehuda Sadeh 19503d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 19513d14c5d2SYehuda Sadeh req->r_pages = pages; 19523d14c5d2SYehuda Sadeh 1953b7495fc2SSage Weil dout("readpages final extent is %llu~%llu (%d pages align %d)\n", 1954b7495fc2SSage Weil off, *plen, req->r_num_pages, page_align); 19553d14c5d2SYehuda Sadeh 19563d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 19573d14c5d2SYehuda Sadeh if (!rc) 19583d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 19593d14c5d2SYehuda Sadeh 19603d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19613d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 19623d14c5d2SYehuda Sadeh return rc; 19633d14c5d2SYehuda Sadeh } 19643d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 19653d14c5d2SYehuda Sadeh 19663d14c5d2SYehuda Sadeh /* 19673d14c5d2SYehuda Sadeh * do a synchronous write on N pages 19683d14c5d2SYehuda Sadeh */ 19693d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 19703d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 19713d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 19723d14c5d2SYehuda Sadeh u64 off, u64 len, 19733d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 19743d14c5d2SYehuda Sadeh struct timespec *mtime, 197524808826SAlex Elder struct page **pages, int num_pages) 19763d14c5d2SYehuda Sadeh { 19773d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19783d14c5d2SYehuda Sadeh int rc = 0; 1979b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 19803d14c5d2SYehuda Sadeh 19813d14c5d2SYehuda Sadeh BUG_ON(vino.snap != CEPH_NOSNAP); 19823d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 19833d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 198424808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 1985fbf8685fSAlex Elder snapc, 0, 19863d14c5d2SYehuda Sadeh truncate_seq, truncate_size, mtime, 1987a3bea47eSAlex Elder true, page_align); 19886816282dSSage Weil if (IS_ERR(req)) 19896816282dSSage Weil return PTR_ERR(req); 19903d14c5d2SYehuda Sadeh 19913d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 19923d14c5d2SYehuda Sadeh req->r_pages = pages; 19933d14c5d2SYehuda Sadeh dout("writepages %llu~%llu (%d pages)\n", off, len, 19943d14c5d2SYehuda Sadeh req->r_num_pages); 19953d14c5d2SYehuda Sadeh 199687f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 19973d14c5d2SYehuda Sadeh if (!rc) 19983d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 19993d14c5d2SYehuda Sadeh 20003d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20013d14c5d2SYehuda Sadeh if (rc == 0) 20023d14c5d2SYehuda Sadeh rc = len; 20033d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 20043d14c5d2SYehuda Sadeh return rc; 20053d14c5d2SYehuda Sadeh } 20063d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 20073d14c5d2SYehuda Sadeh 20083d14c5d2SYehuda Sadeh /* 20093d14c5d2SYehuda Sadeh * handle incoming message 20103d14c5d2SYehuda Sadeh */ 20113d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 20123d14c5d2SYehuda Sadeh { 20133d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20143d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 20153d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 20163d14c5d2SYehuda Sadeh 20173d14c5d2SYehuda Sadeh if (!osd) 20183d14c5d2SYehuda Sadeh goto out; 20193d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 20203d14c5d2SYehuda Sadeh 20213d14c5d2SYehuda Sadeh switch (type) { 20223d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 20233d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 20243d14c5d2SYehuda Sadeh break; 20253d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 20263d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 20273d14c5d2SYehuda Sadeh break; 2028a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2029a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2030a40c4f10SYehuda Sadeh break; 20313d14c5d2SYehuda Sadeh 20323d14c5d2SYehuda Sadeh default: 20333d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 20343d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 20353d14c5d2SYehuda Sadeh } 20363d14c5d2SYehuda Sadeh out: 20373d14c5d2SYehuda Sadeh ceph_msg_put(msg); 20383d14c5d2SYehuda Sadeh } 20393d14c5d2SYehuda Sadeh 20403d14c5d2SYehuda Sadeh /* 20413d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 20423d14c5d2SYehuda Sadeh * pages. 20433d14c5d2SYehuda Sadeh */ 20443d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 20453d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 20463d14c5d2SYehuda Sadeh int *skip) 20473d14c5d2SYehuda Sadeh { 20483d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20493d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 20503d14c5d2SYehuda Sadeh struct ceph_msg *m; 20513d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20523d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 20533d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 20543d14c5d2SYehuda Sadeh u64 tid; 20553d14c5d2SYehuda Sadeh 20563d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 20573d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20583d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 20593d14c5d2SYehuda Sadeh if (!req) { 20603d14c5d2SYehuda Sadeh *skip = 1; 20613d14c5d2SYehuda Sadeh m = NULL; 2062756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 20633d14c5d2SYehuda Sadeh osd->o_osd); 20643d14c5d2SYehuda Sadeh goto out; 20653d14c5d2SYehuda Sadeh } 20663d14c5d2SYehuda Sadeh 20673d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 20688921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 20693d14c5d2SYehuda Sadeh req->r_reply, req->r_con_filling_msg); 20708921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 20710d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 20723d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 20733d14c5d2SYehuda Sadeh } 20743d14c5d2SYehuda Sadeh 20753d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 20763d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 20773d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2078b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 20793d14c5d2SYehuda Sadeh if (!m) 20803d14c5d2SYehuda Sadeh goto out; 20813d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 20823d14c5d2SYehuda Sadeh req->r_reply = m; 20833d14c5d2SYehuda Sadeh } 20843d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 20853d14c5d2SYehuda Sadeh 20863d14c5d2SYehuda Sadeh if (data_len > 0) { 2087b7495fc2SSage Weil int want = calc_pages_for(req->r_page_alignment, data_len); 20883d14c5d2SYehuda Sadeh 20899cbb1d72SAlex Elder if (req->r_pages && unlikely(req->r_num_pages < want)) { 20909bb0ce2bSSage Weil pr_warning("tid %lld reply has %d bytes %d pages, we" 20919bb0ce2bSSage Weil " had only %d pages ready\n", tid, data_len, 20929bb0ce2bSSage Weil want, req->r_num_pages); 20933d14c5d2SYehuda Sadeh *skip = 1; 20943d14c5d2SYehuda Sadeh ceph_msg_put(m); 20953d14c5d2SYehuda Sadeh m = NULL; 20963d14c5d2SYehuda Sadeh goto out; 20973d14c5d2SYehuda Sadeh } 20983d14c5d2SYehuda Sadeh m->pages = req->r_pages; 20993d14c5d2SYehuda Sadeh m->nr_pages = req->r_num_pages; 2100c5c6b19dSSage Weil m->page_alignment = req->r_page_alignment; 21013d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 21023d14c5d2SYehuda Sadeh m->bio = req->r_bio; 21033d14c5d2SYehuda Sadeh #endif 21043d14c5d2SYehuda Sadeh } 21053d14c5d2SYehuda Sadeh *skip = 0; 21060d47766fSSage Weil req->r_con_filling_msg = con->ops->get(con); 21073d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 21083d14c5d2SYehuda Sadeh 21093d14c5d2SYehuda Sadeh out: 21103d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 21113d14c5d2SYehuda Sadeh return m; 21123d14c5d2SYehuda Sadeh 21133d14c5d2SYehuda Sadeh } 21143d14c5d2SYehuda Sadeh 21153d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 21163d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 21173d14c5d2SYehuda Sadeh int *skip) 21183d14c5d2SYehuda Sadeh { 21193d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21203d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 21213d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 21223d14c5d2SYehuda Sadeh 21231c20f2d2SAlex Elder *skip = 0; 21243d14c5d2SYehuda Sadeh switch (type) { 21253d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2126a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2127b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 21283d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21293d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 21303d14c5d2SYehuda Sadeh default: 21313d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 21323d14c5d2SYehuda Sadeh osd->o_osd); 21333d14c5d2SYehuda Sadeh *skip = 1; 21343d14c5d2SYehuda Sadeh return NULL; 21353d14c5d2SYehuda Sadeh } 21363d14c5d2SYehuda Sadeh } 21373d14c5d2SYehuda Sadeh 21383d14c5d2SYehuda Sadeh /* 21393d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 21403d14c5d2SYehuda Sadeh */ 21413d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 21423d14c5d2SYehuda Sadeh { 21433d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21443d14c5d2SYehuda Sadeh if (get_osd(osd)) 21453d14c5d2SYehuda Sadeh return con; 21463d14c5d2SYehuda Sadeh return NULL; 21473d14c5d2SYehuda Sadeh } 21483d14c5d2SYehuda Sadeh 21493d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 21503d14c5d2SYehuda Sadeh { 21513d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21523d14c5d2SYehuda Sadeh put_osd(osd); 21533d14c5d2SYehuda Sadeh } 21543d14c5d2SYehuda Sadeh 21553d14c5d2SYehuda Sadeh /* 21563d14c5d2SYehuda Sadeh * authentication 21573d14c5d2SYehuda Sadeh */ 2158a3530df3SAlex Elder /* 2159a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2160a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2161a3530df3SAlex Elder */ 2162a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 21638f43fb53SAlex Elder int *proto, int force_new) 21643d14c5d2SYehuda Sadeh { 21653d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 21663d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 21673d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 216874f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 21693d14c5d2SYehuda Sadeh 217074f1869fSAlex Elder if (force_new && auth->authorizer) { 2171a255651dSAlex Elder if (ac->ops && ac->ops->destroy_authorizer) 217274f1869fSAlex Elder ac->ops->destroy_authorizer(ac, auth->authorizer); 217374f1869fSAlex Elder auth->authorizer = NULL; 21743d14c5d2SYehuda Sadeh } 2175a255651dSAlex Elder if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) { 2176a3530df3SAlex Elder int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2177a3530df3SAlex Elder auth); 21783d14c5d2SYehuda Sadeh if (ret) 2179a3530df3SAlex Elder return ERR_PTR(ret); 21803d14c5d2SYehuda Sadeh } 21813d14c5d2SYehuda Sadeh *proto = ac->protocol; 218274f1869fSAlex Elder 2183a3530df3SAlex Elder return auth; 21843d14c5d2SYehuda Sadeh } 21853d14c5d2SYehuda Sadeh 21863d14c5d2SYehuda Sadeh 21873d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 21883d14c5d2SYehuda Sadeh { 21893d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 21903d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 21913d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 21923d14c5d2SYehuda Sadeh 2193a255651dSAlex Elder /* 2194a255651dSAlex Elder * XXX If ac->ops or ac->ops->verify_authorizer_reply is null, 2195a255651dSAlex Elder * XXX which do we do: succeed or fail? 2196a255651dSAlex Elder */ 21976c4a1915SAlex Elder return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len); 21983d14c5d2SYehuda Sadeh } 21993d14c5d2SYehuda Sadeh 22003d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 22013d14c5d2SYehuda Sadeh { 22023d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22033d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22043d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 22053d14c5d2SYehuda Sadeh 2206a255651dSAlex Elder if (ac->ops && ac->ops->invalidate_authorizer) 22073d14c5d2SYehuda Sadeh ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 22083d14c5d2SYehuda Sadeh 22093d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 22103d14c5d2SYehuda Sadeh } 22113d14c5d2SYehuda Sadeh 22123d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 22133d14c5d2SYehuda Sadeh .get = get_osd_con, 22143d14c5d2SYehuda Sadeh .put = put_osd_con, 22153d14c5d2SYehuda Sadeh .dispatch = dispatch, 22163d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 22173d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 22183d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 22193d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 22203d14c5d2SYehuda Sadeh .fault = osd_reset, 22213d14c5d2SYehuda Sadeh }; 2222