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net/ceph/osd_client.c
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#include <linux/ceph/ceph_debug.h> |
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#include <linux/module.h> |
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#include <linux/err.h> #include <linux/highmem.h> #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/slab.h> #include <linux/uaccess.h> |
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#ifdef CONFIG_BLOCK #include <linux/bio.h> #endif |
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#include <linux/ceph/libceph.h> #include <linux/ceph/osd_client.h> #include <linux/ceph/messenger.h> #include <linux/ceph/decode.h> #include <linux/ceph/auth.h> #include <linux/ceph/pagelist.h> |
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#define OSD_OP_FRONT_LEN 4096 #define OSD_OPREPLY_FRONT_LEN 512 |
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static const struct ceph_connection_operations osd_con_ops; |
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static void send_queued(struct ceph_osd_client *osdc); static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
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static void __register_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req); static void __unregister_linger_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req); static int __send_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req); |
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static int op_needs_trail(int op) { switch (op) { case CEPH_OSD_OP_GETXATTR: case CEPH_OSD_OP_SETXATTR: case CEPH_OSD_OP_CMPXATTR: case CEPH_OSD_OP_CALL: |
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case CEPH_OSD_OP_NOTIFY: |
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return 1; default: return 0; } } static int op_has_extent(int op) { return (op == CEPH_OSD_OP_READ || op == CEPH_OSD_OP_WRITE); } |
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void ceph_calc_raw_layout(struct ceph_osd_client *osdc, struct ceph_file_layout *layout, u64 snapid, |
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u64 off, u64 *plen, u64 *bno, struct ceph_osd_request *req, struct ceph_osd_req_op *op) |
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{ struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; |
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u64 orig_len = *plen; |
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u64 objoff, objlen; /* extent in object */ reqhead->snapid = cpu_to_le64(snapid); /* object extent? */ |
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ceph_calc_file_object_mapping(layout, off, plen, bno, |
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&objoff, &objlen); |
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if (*plen < orig_len) |
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dout(" skipping last %llu, final file extent %llu~%llu ", |
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orig_len - *plen, off, *plen); |
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if (op_has_extent(op->op)) { op->extent.offset = objoff; op->extent.length = objlen; } req->r_num_pages = calc_pages_for(off, *plen); |
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req->r_page_alignment = off & ~PAGE_MASK; |
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if (op->op == CEPH_OSD_OP_WRITE) op->payload_len = *plen; |
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dout("calc_layout bno=%llx %llu~%llu (%d pages) ", *bno, objoff, objlen, req->r_num_pages); } |
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EXPORT_SYMBOL(ceph_calc_raw_layout); |
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/* * Implement client access to distributed object storage cluster. * * All data objects are stored within a cluster/cloud of OSDs, or * "object storage devices." (Note that Ceph OSDs have _nothing_ to * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply * remote daemons serving up and coordinating consistent and safe * access to storage. * * Cluster membership and the mapping of data objects onto storage devices * are described by the osd map. * * We keep track of pending OSD requests (read, write), resubmit * requests to different OSDs when the cluster topology/data layout * change, or retry the affected requests when the communications * channel with an OSD is reset. */ /* * calculate the mapping of a file extent onto an object, and fill out the * request accordingly. shorten extent as necessary if it crosses an * object boundary. * * fill osd op in request message. */ static void calc_layout(struct ceph_osd_client *osdc, |
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struct ceph_vino vino, struct ceph_file_layout *layout, |
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u64 off, u64 *plen, |
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struct ceph_osd_request *req, struct ceph_osd_req_op *op) |
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{ |
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u64 bno; |
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ceph_calc_raw_layout(osdc, layout, vino.snap, off, plen, &bno, req, op); |
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snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); |
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req->r_oid_len = strlen(req->r_oid); |
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} |
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/* * requests */ |
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void ceph_osdc_release_request(struct kref *kref) |
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{ |
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struct ceph_osd_request *req = container_of(kref, struct ceph_osd_request, r_kref); if (req->r_request) ceph_msg_put(req->r_request); if (req->r_reply) ceph_msg_put(req->r_reply); |
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if (req->r_con_filling_msg) { |
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dout("release_request revoking pages %p from con %p ", |
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req->r_pages, req->r_con_filling_msg); ceph_con_revoke_message(req->r_con_filling_msg, req->r_reply); ceph_con_put(req->r_con_filling_msg); |
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} |
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if (req->r_own_pages) ceph_release_page_vector(req->r_pages, req->r_num_pages); |
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#ifdef CONFIG_BLOCK if (req->r_bio) bio_put(req->r_bio); #endif |
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ceph_put_snap_context(req->r_snapc); |
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if (req->r_trail) { ceph_pagelist_release(req->r_trail); kfree(req->r_trail); } |
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if (req->r_mempool) mempool_free(req, req->r_osdc->req_mempool); else kfree(req); |
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} |
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EXPORT_SYMBOL(ceph_osdc_release_request); |
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static int get_num_ops(struct ceph_osd_req_op *ops, int *needs_trail) { int i = 0; if (needs_trail) *needs_trail = 0; while (ops[i].op) { if (needs_trail && op_needs_trail(ops[i].op)) *needs_trail = 1; i++; } return i; } |
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struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, int flags, |
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struct ceph_snap_context *snapc, |
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struct ceph_osd_req_op *ops, |
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bool use_mempool, gfp_t gfp_flags, |
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struct page **pages, struct bio *bio) |
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{ struct ceph_osd_request *req; struct ceph_msg *msg; |
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int needs_trail; int num_op = get_num_ops(ops, &needs_trail); size_t msg_size = sizeof(struct ceph_osd_request_head); |
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msg_size += num_op*sizeof(struct ceph_osd_op); |
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if (use_mempool) { |
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req = mempool_alloc(osdc->req_mempool, gfp_flags); |
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memset(req, 0, sizeof(*req)); } else { |
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req = kzalloc(sizeof(*req), gfp_flags); |
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} if (req == NULL) |
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return NULL; |
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req->r_osdc = osdc; req->r_mempool = use_mempool; |
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kref_init(&req->r_kref); |
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init_completion(&req->r_completion); init_completion(&req->r_safe_completion); INIT_LIST_HEAD(&req->r_unsafe_item); |
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INIT_LIST_HEAD(&req->r_linger_item); INIT_LIST_HEAD(&req->r_linger_osd); |
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INIT_LIST_HEAD(&req->r_req_lru_item); |
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req->r_flags = flags; WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0); |
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/* create reply message */ if (use_mempool) msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); else msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, |
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OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
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if (!msg) { |
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ceph_osdc_put_request(req); |
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return NULL; |
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} req->r_reply = msg; |
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/* allocate space for the trailing data */ if (needs_trail) { req->r_trail = kmalloc(sizeof(struct ceph_pagelist), gfp_flags); if (!req->r_trail) { ceph_osdc_put_request(req); return NULL; } ceph_pagelist_init(req->r_trail); } |
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/* create request message; allow space for oid */ |
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msg_size += MAX_OBJ_NAME_SIZE; |
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if (snapc) msg_size += sizeof(u64) * snapc->num_snaps; if (use_mempool) |
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msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
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else |
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msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
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if (!msg) { |
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ceph_osdc_put_request(req); |
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return NULL; |
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} |
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msg->hdr.type = cpu_to_le16(CEPH_MSG_OSD_OP); memset(msg->front.iov_base, 0, msg->front.iov_len); |
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req->r_request = msg; req->r_pages = pages; |
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#ifdef CONFIG_BLOCK if (bio) { req->r_bio = bio; bio_get(req->r_bio); } #endif |
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return req; } |
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EXPORT_SYMBOL(ceph_osdc_alloc_request); |
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static void osd_req_encode_op(struct ceph_osd_request *req, struct ceph_osd_op *dst, struct ceph_osd_req_op *src) { dst->op = cpu_to_le16(src->op); switch (dst->op) { case CEPH_OSD_OP_READ: case CEPH_OSD_OP_WRITE: dst->extent.offset = cpu_to_le64(src->extent.offset); dst->extent.length = cpu_to_le64(src->extent.length); dst->extent.truncate_size = cpu_to_le64(src->extent.truncate_size); dst->extent.truncate_seq = cpu_to_le32(src->extent.truncate_seq); break; case CEPH_OSD_OP_GETXATTR: case CEPH_OSD_OP_SETXATTR: case CEPH_OSD_OP_CMPXATTR: BUG_ON(!req->r_trail); dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); dst->xattr.cmp_op = src->xattr.cmp_op; dst->xattr.cmp_mode = src->xattr.cmp_mode; ceph_pagelist_append(req->r_trail, src->xattr.name, src->xattr.name_len); ceph_pagelist_append(req->r_trail, src->xattr.val, src->xattr.value_len); break; |
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case CEPH_OSD_OP_CALL: BUG_ON(!req->r_trail); dst->cls.class_len = src->cls.class_len; dst->cls.method_len = src->cls.method_len; dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); ceph_pagelist_append(req->r_trail, src->cls.class_name, src->cls.class_len); ceph_pagelist_append(req->r_trail, src->cls.method_name, src->cls.method_len); ceph_pagelist_append(req->r_trail, src->cls.indata, src->cls.indata_len); break; case CEPH_OSD_OP_ROLLBACK: dst->snap.snapid = cpu_to_le64(src->snap.snapid); break; |
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case CEPH_OSD_OP_STARTSYNC: break; |
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case CEPH_OSD_OP_NOTIFY: { __le32 prot_ver = cpu_to_le32(src->watch.prot_ver); __le32 timeout = cpu_to_le32(src->watch.timeout); BUG_ON(!req->r_trail); ceph_pagelist_append(req->r_trail, &prot_ver, sizeof(prot_ver)); ceph_pagelist_append(req->r_trail, &timeout, sizeof(timeout)); } case CEPH_OSD_OP_NOTIFY_ACK: case CEPH_OSD_OP_WATCH: dst->watch.cookie = cpu_to_le64(src->watch.cookie); dst->watch.ver = cpu_to_le64(src->watch.ver); dst->watch.flag = src->watch.flag; break; |
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default: pr_err("unrecognized osd opcode %d ", dst->op); WARN_ON(1); break; } dst->payload_len = cpu_to_le32(src->payload_len); } |
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/* * build new request AND message * */ void ceph_osdc_build_request(struct ceph_osd_request *req, |
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u64 off, u64 *plen, struct ceph_osd_req_op *src_ops, struct ceph_snap_context *snapc, struct timespec *mtime, const char *oid, int oid_len) |
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{ struct ceph_msg *msg = req->r_request; struct ceph_osd_request_head *head; |
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struct ceph_osd_req_op *src_op; |
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struct ceph_osd_op *op; void *p; |
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int num_op = get_num_ops(src_ops, NULL); |
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size_t msg_size = sizeof(*head) + num_op*sizeof(*op); |
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int flags = req->r_flags; |
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u64 data_len = 0; int i; |
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head = msg->front.iov_base; op = (void *)(head + 1); p = (void *)(op + num_op); |
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req->r_snapc = ceph_get_snap_context(snapc); head->client_inc = cpu_to_le32(1); /* always, for now. */ head->flags = cpu_to_le32(flags); if (flags & CEPH_OSD_FLAG_WRITE) ceph_encode_timespec(&head->mtime, mtime); head->num_ops = cpu_to_le16(num_op); |
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/* fill in oid */ |
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head->object_len = cpu_to_le32(oid_len); memcpy(p, oid, oid_len); p += oid_len; |
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src_op = src_ops; while (src_op->op) { osd_req_encode_op(req, op, src_op); src_op++; |
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op++; |
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} |
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if (req->r_trail) data_len += req->r_trail->length; |
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if (snapc) { head->snap_seq = cpu_to_le64(snapc->seq); head->num_snaps = cpu_to_le32(snapc->num_snaps); for (i = 0; i < snapc->num_snaps; i++) { put_unaligned_le64(snapc->snaps[i], p); p += sizeof(u64); } } |
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if (flags & CEPH_OSD_FLAG_WRITE) { req->r_request->hdr.data_off = cpu_to_le16(off); req->r_request->hdr.data_len = cpu_to_le32(*plen + data_len); } else if (data_len) { req->r_request->hdr.data_off = 0; req->r_request->hdr.data_len = cpu_to_le32(data_len); } |
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req->r_request->page_alignment = req->r_page_alignment; |
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BUG_ON(p > msg->front.iov_base + msg->front.iov_len); |
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msg_size = p - msg->front.iov_base; msg->front.iov_len = msg_size; msg->hdr.front_len = cpu_to_le32(msg_size); |
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return; } |
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EXPORT_SYMBOL(ceph_osdc_build_request); |
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/* * build new request AND message, calculate layout, and adjust file * extent as needed. * * if the file was recently truncated, we include information about its * old and new size so that the object can be updated appropriately. (we * avoid synchronously deleting truncated objects because it's slow.) * * if @do_sync, include a 'startsync' command so that the osd will flush * data quickly. */ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, struct ceph_file_layout *layout, struct ceph_vino vino, u64 off, u64 *plen, int opcode, int flags, struct ceph_snap_context *snapc, int do_sync, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, |
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bool use_mempool, int num_reply, int page_align) |
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{ |
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struct ceph_osd_req_op ops[3]; struct ceph_osd_request *req; ops[0].op = opcode; ops[0].extent.truncate_seq = truncate_seq; ops[0].extent.truncate_size = truncate_size; ops[0].payload_len = 0; if (do_sync) { ops[1].op = CEPH_OSD_OP_STARTSYNC; ops[1].payload_len = 0; ops[2].op = 0; } else ops[1].op = 0; req = ceph_osdc_alloc_request(osdc, flags, snapc, ops, |
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use_mempool, |
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GFP_NOFS, NULL, NULL); |
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if (!req) return NULL; |
3499e8a5d ceph: refactor os... |
468 469 |
/* calculate max write size */ |
68b4476b0 ceph: messenger a... |
470 |
calc_layout(osdc, vino, layout, off, plen, req, ops); |
3499e8a5d ceph: refactor os... |
471 |
req->r_file_layout = *layout; /* keep a copy */ |
9bb0ce2b0 libceph: fix page... |
472 473 474 |
/* in case it differs from natural (file) alignment that calc_layout filled in for us */ req->r_num_pages = calc_pages_for(page_align, *plen); |
b7495fc2f ceph: make page a... |
475 |
req->r_page_alignment = page_align; |
68b4476b0 ceph: messenger a... |
476 477 |
ceph_osdc_build_request(req, off, plen, ops, snapc, |
3499e8a5d ceph: refactor os... |
478 479 |
mtime, req->r_oid, req->r_oid_len); |
f24e9980e ceph: OSD client |
480 481 |
return req; } |
3d14c5d2b ceph: factor out ... |
482 |
EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980e ceph: OSD client |
483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 |
/* * We keep osd requests in an rbtree, sorted by ->r_tid. */ static void __insert_request(struct ceph_osd_client *osdc, struct ceph_osd_request *new) { struct rb_node **p = &osdc->requests.rb_node; struct rb_node *parent = NULL; struct ceph_osd_request *req = NULL; while (*p) { parent = *p; req = rb_entry(parent, struct ceph_osd_request, r_node); if (new->r_tid < req->r_tid) p = &(*p)->rb_left; else if (new->r_tid > req->r_tid) p = &(*p)->rb_right; else BUG(); } rb_link_node(&new->r_node, parent, p); rb_insert_color(&new->r_node, &osdc->requests); } static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, u64 tid) { struct ceph_osd_request *req; struct rb_node *n = osdc->requests.rb_node; while (n) { req = rb_entry(n, struct ceph_osd_request, r_node); if (tid < req->r_tid) n = n->rb_left; else if (tid > req->r_tid) n = n->rb_right; else return req; } return NULL; } static struct ceph_osd_request * __lookup_request_ge(struct ceph_osd_client *osdc, u64 tid) { struct ceph_osd_request *req; struct rb_node *n = osdc->requests.rb_node; while (n) { req = rb_entry(n, struct ceph_osd_request, r_node); if (tid < req->r_tid) { if (!n->rb_left) return req; n = n->rb_left; } else if (tid > req->r_tid) { n = n->rb_right; } else { return req; } } return NULL; } |
6f6c70067 libceph: fix osd ... |
548 549 550 551 552 553 |
/* * Resubmit requests pending on the given osd. */ static void __kick_osd_requests(struct ceph_osd_client *osdc, struct ceph_osd *osd) { |
a40c4f10e libceph: add ling... |
554 |
struct ceph_osd_request *req, *nreq; |
6f6c70067 libceph: fix osd ... |
555 556 557 558 559 560 561 562 563 564 565 566 567 |
int err; dout("__kick_osd_requests osd%d ", osd->o_osd); err = __reset_osd(osdc, osd); if (err == -EAGAIN) return; list_for_each_entry(req, &osd->o_requests, r_osd_item) { list_move(&req->r_req_lru_item, &osdc->req_unsent); dout("requeued %p tid %llu osd%d ", req, req->r_tid, osd->o_osd); |
a40c4f10e libceph: add ling... |
568 569 570 571 572 573 |
if (!req->r_linger) req->r_flags |= CEPH_OSD_FLAG_RETRY; } list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, r_linger_osd) { |
77f38e0ee libceph: fix ling... |
574 575 576 577 578 |
/* * reregister request prior to unregistering linger so * that r_osd is preserved. */ BUG_ON(!list_empty(&req->r_req_lru_item)); |
a40c4f10e libceph: add ling... |
579 |
__register_request(osdc, req); |
77f38e0ee libceph: fix ling... |
580 581 582 |
list_add(&req->r_req_lru_item, &osdc->req_unsent); list_add(&req->r_osd_item, &req->r_osd->o_requests); __unregister_linger_request(osdc, req); |
a40c4f10e libceph: add ling... |
583 584 585 |
dout("requeued lingering %p tid %llu osd%d ", req, req->r_tid, osd->o_osd); |
6f6c70067 libceph: fix osd ... |
586 587 588 589 590 591 592 593 594 595 |
} } static void kick_osd_requests(struct ceph_osd_client *osdc, struct ceph_osd *kickosd) { mutex_lock(&osdc->request_mutex); __kick_osd_requests(osdc, kickosd); mutex_unlock(&osdc->request_mutex); } |
f24e9980e ceph: OSD client |
596 597 |
/* |
81b024e70 ceph: reset osd s... |
598 |
* If the osd connection drops, we need to resubmit all requests. |
f24e9980e ceph: OSD client |
599 600 601 602 603 604 605 606 607 608 609 |
*/ static void osd_reset(struct ceph_connection *con) { struct ceph_osd *osd = con->private; struct ceph_osd_client *osdc; if (!osd) return; dout("osd_reset osd%d ", osd->o_osd); osdc = osd->o_osdc; |
f24e9980e ceph: OSD client |
610 |
down_read(&osdc->map_sem); |
6f6c70067 libceph: fix osd ... |
611 612 |
kick_osd_requests(osdc, osd); send_queued(osdc); |
f24e9980e ceph: OSD client |
613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 |
up_read(&osdc->map_sem); } /* * Track open sessions with osds. */ static struct ceph_osd *create_osd(struct ceph_osd_client *osdc) { struct ceph_osd *osd; osd = kzalloc(sizeof(*osd), GFP_NOFS); if (!osd) return NULL; atomic_set(&osd->o_ref, 1); osd->o_osdc = osdc; INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10e libceph: add ling... |
630 |
INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041bd ceph: put unused ... |
631 |
INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980e ceph: OSD client |
632 633 634 635 636 637 |
osd->o_incarnation = 1; ceph_con_init(osdc->client->msgr, &osd->o_con); osd->o_con.private = osd; osd->o_con.ops = &osd_con_ops; osd->o_con.peer_name.type = CEPH_ENTITY_TYPE_OSD; |
4e7a5dcd1 ceph: negotiate a... |
638 |
|
422d2cb8f ceph: reset osd a... |
639 |
INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980e ceph: OSD client |
640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 |
return osd; } static struct ceph_osd *get_osd(struct ceph_osd *osd) { if (atomic_inc_not_zero(&osd->o_ref)) { dout("get_osd %p %d -> %d ", osd, atomic_read(&osd->o_ref)-1, atomic_read(&osd->o_ref)); return osd; } else { dout("get_osd %p FAIL ", osd); return NULL; } } static void put_osd(struct ceph_osd *osd) { dout("put_osd %p %d -> %d ", osd, atomic_read(&osd->o_ref), atomic_read(&osd->o_ref) - 1); |
79494d1b9 ceph: fix leak of... |
662 663 664 665 666 |
if (atomic_dec_and_test(&osd->o_ref)) { struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; if (osd->o_authorizer) ac->ops->destroy_authorizer(ac, osd->o_authorizer); |
f24e9980e ceph: OSD client |
667 |
kfree(osd); |
79494d1b9 ceph: fix leak of... |
668 |
} |
f24e9980e ceph: OSD client |
669 670 671 672 673 |
} /* * remove an osd from our map */ |
f5a2041bd ceph: put unused ... |
674 |
static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980e ceph: OSD client |
675 |
{ |
f5a2041bd ceph: put unused ... |
676 677 |
dout("__remove_osd %p ", osd); |
f24e9980e ceph: OSD client |
678 679 |
BUG_ON(!list_empty(&osd->o_requests)); rb_erase(&osd->o_node, &osdc->osds); |
f5a2041bd ceph: put unused ... |
680 |
list_del_init(&osd->o_osd_lru); |
f24e9980e ceph: OSD client |
681 682 683 |
ceph_con_close(&osd->o_con); put_osd(osd); } |
aca420bc5 libceph: fix leak... |
684 685 686 687 688 689 690 691 692 693 694 695 |
static void remove_all_osds(struct ceph_osd_client *osdc) { dout("__remove_old_osds %p ", osdc); mutex_lock(&osdc->request_mutex); while (!RB_EMPTY_ROOT(&osdc->osds)) { struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), struct ceph_osd, o_node); __remove_osd(osdc, osd); } mutex_unlock(&osdc->request_mutex); } |
f5a2041bd ceph: put unused ... |
696 697 698 699 700 701 702 |
static void __move_osd_to_lru(struct ceph_osd_client *osdc, struct ceph_osd *osd) { dout("__move_osd_to_lru %p ", osd); BUG_ON(!list_empty(&osd->o_osd_lru)); list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
3d14c5d2b ceph: factor out ... |
703 |
osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041bd ceph: put unused ... |
704 705 706 707 708 709 710 711 712 |
} static void __remove_osd_from_lru(struct ceph_osd *osd) { dout("__remove_osd_from_lru %p ", osd); if (!list_empty(&osd->o_osd_lru)) list_del_init(&osd->o_osd_lru); } |
aca420bc5 libceph: fix leak... |
713 |
static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041bd ceph: put unused ... |
714 715 716 717 718 719 720 |
{ struct ceph_osd *osd, *nosd; dout("__remove_old_osds %p ", osdc); mutex_lock(&osdc->request_mutex); list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { |
aca420bc5 libceph: fix leak... |
721 |
if (time_before(jiffies, osd->lru_ttl)) |
f5a2041bd ceph: put unused ... |
722 723 724 725 726 |
break; __remove_osd(osdc, osd); } mutex_unlock(&osdc->request_mutex); } |
f24e9980e ceph: OSD client |
727 728 729 |
/* * reset osd connect */ |
f5a2041bd ceph: put unused ... |
730 |
static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980e ceph: OSD client |
731 |
{ |
87b315a5b ceph: avoid reope... |
732 |
struct ceph_osd_request *req; |
f24e9980e ceph: OSD client |
733 |
int ret = 0; |
f5a2041bd ceph: put unused ... |
734 735 |
dout("__reset_osd %p osd%d ", osd, osd->o_osd); |
a40c4f10e libceph: add ling... |
736 737 |
if (list_empty(&osd->o_requests) && list_empty(&osd->o_linger_requests)) { |
f5a2041bd ceph: put unused ... |
738 |
__remove_osd(osdc, osd); |
87b315a5b ceph: avoid reope... |
739 740 741 742 743 744 745 746 747 748 |
} else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd], &osd->o_con.peer_addr, sizeof(osd->o_con.peer_addr)) == 0 && !ceph_con_opened(&osd->o_con)) { dout(" osd addr hasn't changed and connection never opened," " letting msgr retry"); /* touch each r_stamp for handle_timeout()'s benfit */ list_for_each_entry(req, &osd->o_requests, r_osd_item) req->r_stamp = jiffies; ret = -EAGAIN; |
f24e9980e ceph: OSD client |
749 750 751 752 753 754 755 756 757 758 759 760 761 |
} else { ceph_con_close(&osd->o_con); ceph_con_open(&osd->o_con, &osdc->osdmap->osd_addr[osd->o_osd]); osd->o_incarnation++; } return ret; } static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) { struct rb_node **p = &osdc->osds.rb_node; struct rb_node *parent = NULL; struct ceph_osd *osd = NULL; |
aca420bc5 libceph: fix leak... |
762 763 |
dout("__insert_osd %p osd%d ", new, new->o_osd); |
f24e9980e ceph: OSD client |
764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 |
while (*p) { parent = *p; osd = rb_entry(parent, struct ceph_osd, o_node); if (new->o_osd < osd->o_osd) p = &(*p)->rb_left; else if (new->o_osd > osd->o_osd) p = &(*p)->rb_right; else BUG(); } rb_link_node(&new->o_node, parent, p); rb_insert_color(&new->o_node, &osdc->osds); } static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) { struct ceph_osd *osd; struct rb_node *n = osdc->osds.rb_node; while (n) { osd = rb_entry(n, struct ceph_osd, o_node); if (o < osd->o_osd) n = n->rb_left; else if (o > osd->o_osd) n = n->rb_right; else return osd; } return NULL; } |
422d2cb8f ceph: reset osd a... |
795 796 797 |
static void __schedule_osd_timeout(struct ceph_osd_client *osdc) { schedule_delayed_work(&osdc->timeout_work, |
3d14c5d2b ceph: factor out ... |
798 |
osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8f ceph: reset osd a... |
799 800 801 802 803 804 |
} static void __cancel_osd_timeout(struct ceph_osd_client *osdc) { cancel_delayed_work(&osdc->timeout_work); } |
f24e9980e ceph: OSD client |
805 806 807 808 809 |
/* * Register request, assign tid. If this is the first request, set up * the timeout event. */ |
a40c4f10e libceph: add ling... |
810 811 |
static void __register_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) |
f24e9980e ceph: OSD client |
812 |
{ |
f24e9980e ceph: OSD client |
813 |
req->r_tid = ++osdc->last_tid; |
6df058c02 ceph: include tra... |
814 |
req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0ee libceph: fix ling... |
815 816 |
dout("__register_request %p tid %lld ", req, req->r_tid); |
f24e9980e ceph: OSD client |
817 818 819 |
__insert_request(osdc, req); ceph_osdc_get_request(req); osdc->num_requests++; |
f24e9980e ceph: OSD client |
820 |
if (osdc->num_requests == 1) { |
422d2cb8f ceph: reset osd a... |
821 822 823 |
dout(" first request, scheduling timeout "); __schedule_osd_timeout(osdc); |
f24e9980e ceph: OSD client |
824 |
} |
a40c4f10e libceph: add ling... |
825 826 827 828 829 830 831 |
} static void register_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { mutex_lock(&osdc->request_mutex); __register_request(osdc, req); |
f24e9980e ceph: OSD client |
832 833 834 835 836 837 838 839 840 841 842 843 844 |
mutex_unlock(&osdc->request_mutex); } /* * called under osdc->request_mutex */ static void __unregister_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { dout("__unregister_request %p tid %lld ", req, req->r_tid); rb_erase(&req->r_node, &osdc->requests); osdc->num_requests--; |
0ba6478df ceph: revoke osd ... |
845 846 847 848 849 |
if (req->r_osd) { /* make sure the original request isn't in flight. */ ceph_con_revoke(&req->r_osd->o_con, req->r_request); list_del_init(&req->r_osd_item); |
a40c4f10e libceph: add ling... |
850 851 852 853 |
if (list_empty(&req->r_osd->o_requests) && list_empty(&req->r_osd->o_linger_requests)) { dout("moving osd to %p lru ", req->r_osd); |
f5a2041bd ceph: put unused ... |
854 |
__move_osd_to_lru(osdc, req->r_osd); |
a40c4f10e libceph: add ling... |
855 |
} |
fbdb91904 libceph: fix null... |
856 |
if (list_empty(&req->r_linger_item)) |
a40c4f10e libceph: add ling... |
857 |
req->r_osd = NULL; |
0ba6478df ceph: revoke osd ... |
858 |
} |
f24e9980e ceph: OSD client |
859 860 |
ceph_osdc_put_request(req); |
422d2cb8f ceph: reset osd a... |
861 862 863 864 865 |
list_del_init(&req->r_req_lru_item); if (osdc->num_requests == 0) { dout(" no requests, canceling timeout "); __cancel_osd_timeout(osdc); |
f24e9980e ceph: OSD client |
866 867 868 869 870 871 872 873 |
} } /* * Cancel a previously queued request message */ static void __cancel_request(struct ceph_osd_request *req) { |
6bc18876b ceph: avoid null ... |
874 |
if (req->r_sent && req->r_osd) { |
f24e9980e ceph: OSD client |
875 876 877 878 |
ceph_con_revoke(&req->r_osd->o_con, req->r_request); req->r_sent = 0; } } |
a40c4f10e libceph: add ling... |
879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 |
static void __register_linger_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { dout("__register_linger_request %p ", req); list_add_tail(&req->r_linger_item, &osdc->req_linger); list_add_tail(&req->r_linger_osd, &req->r_osd->o_linger_requests); } static void __unregister_linger_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { dout("__unregister_linger_request %p ", req); if (req->r_osd) { list_del_init(&req->r_linger_item); list_del_init(&req->r_linger_osd); if (list_empty(&req->r_osd->o_requests) && list_empty(&req->r_osd->o_linger_requests)) { dout("moving osd to %p lru ", req->r_osd); __move_osd_to_lru(osdc, req->r_osd); } |
fbdb91904 libceph: fix null... |
903 904 |
if (list_empty(&req->r_osd_item)) req->r_osd = NULL; |
a40c4f10e libceph: add ling... |
905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 |
} } void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { mutex_lock(&osdc->request_mutex); if (req->r_linger) { __unregister_linger_request(osdc, req); ceph_osdc_put_request(req); } mutex_unlock(&osdc->request_mutex); } EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { if (!req->r_linger) { dout("set_request_linger %p ", req); req->r_linger = 1; /* * caller is now responsible for calling * unregister_linger_request */ ceph_osdc_get_request(req); } } EXPORT_SYMBOL(ceph_osdc_set_request_linger); |
f24e9980e ceph: OSD client |
935 936 937 |
/* * Pick an osd (the first 'up' osd in the pg), allocate the osd struct * (as needed), and set the request r_osd appropriately. If there is |
25985edce Fix common misspe... |
938 |
* no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c70067 libceph: fix osd ... |
939 |
* (unsent, homeless) or leave on in-flight lru. |
f24e9980e ceph: OSD client |
940 941 942 943 944 |
* * Return 0 if unchanged, 1 if changed, or negative on error. * * Caller should hold map_sem for read and request_mutex. */ |
6f6c70067 libceph: fix osd ... |
945 |
static int __map_request(struct ceph_osd_client *osdc, |
38d6453ca libceph: force re... |
946 |
struct ceph_osd_request *req, int force_resend) |
f24e9980e ceph: OSD client |
947 948 |
{ struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; |
51042122d ceph: fix endian ... |
949 |
struct ceph_pg pgid; |
d85b70566 ceph: resubmit re... |
950 951 |
int acting[CEPH_PG_MAX_SIZE]; int o = -1, num = 0; |
f24e9980e ceph: OSD client |
952 |
int err; |
f24e9980e ceph: OSD client |
953 |
|
6f6c70067 libceph: fix osd ... |
954 955 |
dout("map_request %p tid %lld ", req, req->r_tid); |
f24e9980e ceph: OSD client |
956 957 |
err = ceph_calc_object_layout(&reqhead->layout, req->r_oid, &req->r_file_layout, osdc->osdmap); |
6f6c70067 libceph: fix osd ... |
958 959 |
if (err) { list_move(&req->r_req_lru_item, &osdc->req_notarget); |
f24e9980e ceph: OSD client |
960 |
return err; |
6f6c70067 libceph: fix osd ... |
961 |
} |
51042122d ceph: fix endian ... |
962 |
pgid = reqhead->layout.ol_pgid; |
7740a42f8 ceph: display pgi... |
963 |
req->r_pgid = pgid; |
d85b70566 ceph: resubmit re... |
964 965 966 967 968 |
err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); if (err > 0) { o = acting[0]; num = err; } |
f24e9980e ceph: OSD client |
969 |
|
38d6453ca libceph: force re... |
970 971 |
if ((!force_resend && req->r_osd && req->r_osd->o_osd == o && |
d85b70566 ceph: resubmit re... |
972 973 974 |
req->r_sent >= req->r_osd->o_incarnation && req->r_num_pg_osds == num && memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || |
f24e9980e ceph: OSD client |
975 976 |
(req->r_osd == NULL && o == -1)) return 0; /* no change */ |
6f6c70067 libceph: fix osd ... |
977 978 |
dout("map_request tid %llu pgid %d.%x osd%d (was osd%d) ", |
51042122d ceph: fix endian ... |
979 |
req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o, |
f24e9980e ceph: OSD client |
980 |
req->r_osd ? req->r_osd->o_osd : -1); |
d85b70566 ceph: resubmit re... |
981 982 983 |
/* record full pg acting set */ memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); req->r_num_pg_osds = num; |
f24e9980e ceph: OSD client |
984 985 986 |
if (req->r_osd) { __cancel_request(req); list_del_init(&req->r_osd_item); |
f24e9980e ceph: OSD client |
987 988 989 990 991 |
req->r_osd = NULL; } req->r_osd = __lookup_osd(osdc, o); if (!req->r_osd && o >= 0) { |
c99eb1c72 ceph: remove frag... |
992 993 |
err = -ENOMEM; req->r_osd = create_osd(osdc); |
6f6c70067 libceph: fix osd ... |
994 995 |
if (!req->r_osd) { list_move(&req->r_req_lru_item, &osdc->req_notarget); |
c99eb1c72 ceph: remove frag... |
996 |
goto out; |
6f6c70067 libceph: fix osd ... |
997 |
} |
f24e9980e ceph: OSD client |
998 |
|
6f6c70067 libceph: fix osd ... |
999 1000 |
dout("map_request osd %p is osd%d ", req->r_osd, o); |
f24e9980e ceph: OSD client |
1001 1002 1003 1004 1005 1006 |
req->r_osd->o_osd = o; req->r_osd->o_con.peer_name.num = cpu_to_le64(o); __insert_osd(osdc, req->r_osd); ceph_con_open(&req->r_osd->o_con, &osdc->osdmap->osd_addr[o]); } |
f5a2041bd ceph: put unused ... |
1007 1008 |
if (req->r_osd) { __remove_osd_from_lru(req->r_osd); |
f24e9980e ceph: OSD client |
1009 |
list_add(&req->r_osd_item, &req->r_osd->o_requests); |
6f6c70067 libceph: fix osd ... |
1010 1011 1012 |
list_move(&req->r_req_lru_item, &osdc->req_unsent); } else { list_move(&req->r_req_lru_item, &osdc->req_notarget); |
f5a2041bd ceph: put unused ... |
1013 |
} |
d85b70566 ceph: resubmit re... |
1014 |
err = 1; /* osd or pg changed */ |
f24e9980e ceph: OSD client |
1015 1016 |
out: |
f24e9980e ceph: OSD client |
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 |
return err; } /* * caller should hold map_sem (for read) and request_mutex */ static int __send_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { struct ceph_osd_request_head *reqhead; |
f24e9980e ceph: OSD client |
1027 1028 1029 1030 1031 1032 1033 1034 1035 |
dout("send_request %p tid %llu to osd%d flags %d ", req, req->r_tid, req->r_osd->o_osd, req->r_flags); reqhead = req->r_request->front.iov_base; reqhead->osdmap_epoch = cpu_to_le32(osdc->osdmap->epoch); reqhead->flags |= cpu_to_le32(req->r_flags); /* e.g., RETRY */ reqhead->reassert_version = req->r_reassert_version; |
3dd72fc0e ceph: rename r_se... |
1036 |
req->r_stamp = jiffies; |
07a27e226 ceph: fix osd req... |
1037 |
list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980e ceph: OSD client |
1038 1039 1040 1041 1042 1043 1044 1045 |
ceph_msg_get(req->r_request); /* send consumes a ref */ ceph_con_send(&req->r_osd->o_con, req->r_request); req->r_sent = req->r_osd->o_incarnation; return 0; } /* |
6f6c70067 libceph: fix osd ... |
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 |
* Send any requests in the queue (req_unsent). */ static void send_queued(struct ceph_osd_client *osdc) { struct ceph_osd_request *req, *tmp; dout("send_queued "); mutex_lock(&osdc->request_mutex); list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) { __send_request(osdc, req); } mutex_unlock(&osdc->request_mutex); } /* |
f24e9980e ceph: OSD client |
1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 |
* Timeout callback, called every N seconds when 1 or more osd * requests has been active for more than N seconds. When this * happens, we ping all OSDs with requests who have timed out to * ensure any communications channel reset is detected. Reset the * request timeouts another N seconds in the future as we go. * Reschedule the timeout event another N seconds in future (unless * there are no open requests). */ static void handle_timeout(struct work_struct *work) { struct ceph_osd_client *osdc = container_of(work, struct ceph_osd_client, timeout_work.work); |
422d2cb8f ceph: reset osd a... |
1074 |
struct ceph_osd_request *req, *last_req = NULL; |
f24e9980e ceph: OSD client |
1075 |
struct ceph_osd *osd; |
3d14c5d2b ceph: factor out ... |
1076 |
unsigned long timeout = osdc->client->options->osd_timeout * HZ; |
422d2cb8f ceph: reset osd a... |
1077 |
unsigned long keepalive = |
3d14c5d2b ceph: factor out ... |
1078 |
osdc->client->options->osd_keepalive_timeout * HZ; |
3dd72fc0e ceph: rename r_se... |
1079 |
unsigned long last_stamp = 0; |
422d2cb8f ceph: reset osd a... |
1080 |
struct list_head slow_osds; |
f24e9980e ceph: OSD client |
1081 1082 1083 1084 1085 1086 1087 |
dout("timeout "); down_read(&osdc->map_sem); ceph_monc_request_next_osdmap(&osdc->client->monc); mutex_lock(&osdc->request_mutex); |
f24e9980e ceph: OSD client |
1088 |
|
422d2cb8f ceph: reset osd a... |
1089 1090 1091 1092 1093 1094 1095 |
/* * reset osds that appear to be _really_ unresponsive. this * is a failsafe measure.. we really shouldn't be getting to * this point if the system is working properly. the monitors * should mark the osd as failed and we should find out about * it from an updated osd map. */ |
f26e681d5 ceph: osdtimeout=... |
1096 |
while (timeout && !list_empty(&osdc->req_lru)) { |
422d2cb8f ceph: reset osd a... |
1097 1098 |
req = list_entry(osdc->req_lru.next, struct ceph_osd_request, r_req_lru_item); |
4cf9d5446 libceph: don't ti... |
1099 |
/* hasn't been long enough since we sent it? */ |
3dd72fc0e ceph: rename r_se... |
1100 |
if (time_before(jiffies, req->r_stamp + timeout)) |
422d2cb8f ceph: reset osd a... |
1101 |
break; |
4cf9d5446 libceph: don't ti... |
1102 1103 1104 1105 1106 |
/* hasn't been long enough since it was acked? */ if (req->r_request->ack_stamp == 0 || time_before(jiffies, req->r_request->ack_stamp + timeout)) break; |
422d2cb8f ceph: reset osd a... |
1107 |
|
3dd72fc0e ceph: rename r_se... |
1108 |
BUG_ON(req == last_req && req->r_stamp == last_stamp); |
422d2cb8f ceph: reset osd a... |
1109 |
last_req = req; |
3dd72fc0e ceph: rename r_se... |
1110 |
last_stamp = req->r_stamp; |
422d2cb8f ceph: reset osd a... |
1111 1112 1113 1114 1115 1116 |
osd = req->r_osd; BUG_ON(!osd); pr_warning(" tid %llu timed out on osd%d, will reset osd ", req->r_tid, osd->o_osd); |
6f6c70067 libceph: fix osd ... |
1117 |
__kick_osd_requests(osdc, osd); |
422d2cb8f ceph: reset osd a... |
1118 1119 1120 1121 1122 1123 1124 1125 1126 |
} /* * ping osds that are a bit slow. this ensures that if there * is a break in the TCP connection we will notice, and reopen * a connection with that osd (from the fault callback). */ INIT_LIST_HEAD(&slow_osds); list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { |
3dd72fc0e ceph: rename r_se... |
1127 |
if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8f ceph: reset osd a... |
1128 1129 1130 1131 1132 1133 |
break; osd = req->r_osd; BUG_ON(!osd); dout(" tid %llu is slow, will send keepalive on osd%d ", |
f24e9980e ceph: OSD client |
1134 |
req->r_tid, osd->o_osd); |
422d2cb8f ceph: reset osd a... |
1135 1136 1137 1138 1139 1140 |
list_move_tail(&osd->o_keepalive_item, &slow_osds); } while (!list_empty(&slow_osds)) { osd = list_entry(slow_osds.next, struct ceph_osd, o_keepalive_item); list_del_init(&osd->o_keepalive_item); |
f24e9980e ceph: OSD client |
1141 1142 |
ceph_con_keepalive(&osd->o_con); } |
422d2cb8f ceph: reset osd a... |
1143 |
__schedule_osd_timeout(osdc); |
f24e9980e ceph: OSD client |
1144 |
mutex_unlock(&osdc->request_mutex); |
6f6c70067 libceph: fix osd ... |
1145 |
send_queued(osdc); |
f24e9980e ceph: OSD client |
1146 1147 |
up_read(&osdc->map_sem); } |
f5a2041bd ceph: put unused ... |
1148 1149 1150 1151 1152 1153 |
static void handle_osds_timeout(struct work_struct *work) { struct ceph_osd_client *osdc = container_of(work, struct ceph_osd_client, osds_timeout_work.work); unsigned long delay = |
3d14c5d2b ceph: factor out ... |
1154 |
osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041bd ceph: put unused ... |
1155 1156 1157 1158 |
dout("osds timeout "); down_read(&osdc->map_sem); |
aca420bc5 libceph: fix leak... |
1159 |
remove_old_osds(osdc); |
f5a2041bd ceph: put unused ... |
1160 1161 1162 1163 1164 |
up_read(&osdc->map_sem); schedule_delayed_work(&osdc->osds_timeout_work, round_jiffies_relative(delay)); } |
258454723 ceph: fix sync vs... |
1165 1166 1167 1168 1169 1170 |
static void complete_request(struct ceph_osd_request *req) { if (req->r_safe_callback) req->r_safe_callback(req, NULL); complete_all(&req->r_safe_completion); /* fsync waiter */ } |
f24e9980e ceph: OSD client |
1171 1172 1173 1174 |
/* * handle osd op reply. either call the callback if it is specified, * or do the completion to wake up the waiting thread. */ |
350b1c32e ceph: control acc... |
1175 1176 |
static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, struct ceph_connection *con) |
f24e9980e ceph: OSD client |
1177 1178 1179 1180 1181 |
{ struct ceph_osd_reply_head *rhead = msg->front.iov_base; struct ceph_osd_request *req; u64 tid; int numops, object_len, flags; |
0ceed5db3 ceph: unregister ... |
1182 |
s32 result; |
f24e9980e ceph: OSD client |
1183 |
|
6df058c02 ceph: include tra... |
1184 |
tid = le64_to_cpu(msg->hdr.tid); |
f24e9980e ceph: OSD client |
1185 1186 |
if (msg->front.iov_len < sizeof(*rhead)) goto bad; |
f24e9980e ceph: OSD client |
1187 1188 |
numops = le32_to_cpu(rhead->num_ops); object_len = le32_to_cpu(rhead->object_len); |
0ceed5db3 ceph: unregister ... |
1189 |
result = le32_to_cpu(rhead->result); |
f24e9980e ceph: OSD client |
1190 1191 1192 |
if (msg->front.iov_len != sizeof(*rhead) + object_len + numops * sizeof(struct ceph_osd_op)) goto bad; |
0ceed5db3 ceph: unregister ... |
1193 1194 |
dout("handle_reply %p tid %llu result %d ", msg, tid, (int)result); |
f24e9980e ceph: OSD client |
1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 |
/* lookup */ mutex_lock(&osdc->request_mutex); req = __lookup_request(osdc, tid); if (req == NULL) { dout("handle_reply tid %llu dne ", tid); mutex_unlock(&osdc->request_mutex); return; } ceph_osdc_get_request(req); flags = le32_to_cpu(rhead->flags); |
350b1c32e ceph: control acc... |
1206 |
/* |
0d59ab81c ceph: keep reserv... |
1207 |
* if this connection filled our message, drop our reference now, to |
350b1c32e ceph: control acc... |
1208 1209 |
* avoid a (safe but slower) revoke later. */ |
0d59ab81c ceph: keep reserv... |
1210 |
if (req->r_con_filling_msg == con && req->r_reply == msg) { |
c16e78692 ceph: use single ... |
1211 1212 |
dout(" dropping con_filling_msg ref %p ", con); |
0d59ab81c ceph: keep reserv... |
1213 |
req->r_con_filling_msg = NULL; |
350b1c32e ceph: control acc... |
1214 1215 |
ceph_con_put(con); } |
f24e9980e ceph: OSD client |
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 |
if (!req->r_got_reply) { unsigned bytes; req->r_result = le32_to_cpu(rhead->result); bytes = le32_to_cpu(msg->hdr.data_len); dout("handle_reply result %d bytes %d ", req->r_result, bytes); if (req->r_result == 0) req->r_result = bytes; /* in case this is a write and we need to replay, */ req->r_reassert_version = rhead->reassert_version; req->r_got_reply = 1; } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { dout("handle_reply tid %llu dup ack ", tid); |
34b43a56b ceph: plug leak o... |
1234 |
mutex_unlock(&osdc->request_mutex); |
f24e9980e ceph: OSD client |
1235 1236 1237 1238 1239 |
goto done; } dout("handle_reply tid %llu flags %d ", tid, flags); |
a40c4f10e libceph: add ling... |
1240 1241 |
if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) __register_linger_request(osdc, req); |
f24e9980e ceph: OSD client |
1242 |
/* either this is a read, or we got the safe response */ |
0ceed5db3 ceph: unregister ... |
1243 1244 |
if (result < 0 || (flags & CEPH_OSD_FLAG_ONDISK) || |
f24e9980e ceph: OSD client |
1245 1246 1247 1248 1249 1250 1251 1252 |
((flags & CEPH_OSD_FLAG_WRITE) == 0)) __unregister_request(osdc, req); mutex_unlock(&osdc->request_mutex); if (req->r_callback) req->r_callback(req, msg); else |
03066f234 ceph: use complet... |
1253 |
complete_all(&req->r_completion); |
f24e9980e ceph: OSD client |
1254 |
|
258454723 ceph: fix sync vs... |
1255 1256 |
if (flags & CEPH_OSD_FLAG_ONDISK) complete_request(req); |
f24e9980e ceph: OSD client |
1257 1258 |
done: |
a40c4f10e libceph: add ling... |
1259 1260 |
dout("req=%p req->r_linger=%d ", req, req->r_linger); |
f24e9980e ceph: OSD client |
1261 1262 1263 1264 1265 1266 1267 1268 |
ceph_osdc_put_request(req); return; bad: pr_err("corrupt osd_op_reply got %d %d expected %d ", (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len), (int)sizeof(*rhead)); |
9ec7cab14 ceph: hex dump co... |
1269 |
ceph_msg_dump(msg); |
f24e9980e ceph: OSD client |
1270 |
} |
6f6c70067 libceph: fix osd ... |
1271 |
static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980e ceph: OSD client |
1272 |
{ |
f24e9980e ceph: OSD client |
1273 |
struct rb_node *p, *n; |
f24e9980e ceph: OSD client |
1274 |
|
6f6c70067 libceph: fix osd ... |
1275 1276 |
for (p = rb_first(&osdc->osds); p; p = n) { struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); |
f24e9980e ceph: OSD client |
1277 |
|
6f6c70067 libceph: fix osd ... |
1278 1279 1280 1281 1282 1283 1284 |
n = rb_next(p); if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || memcmp(&osd->o_con.peer_addr, ceph_osd_addr(osdc->osdmap, osd->o_osd), sizeof(struct ceph_entity_addr)) != 0) __reset_osd(osdc, osd); |
f24e9980e ceph: OSD client |
1285 |
} |
422d2cb8f ceph: reset osd a... |
1286 1287 1288 |
} /* |
6f6c70067 libceph: fix osd ... |
1289 1290 |
* Requeue requests whose mapping to an OSD has changed. If requests map to * no osd, request a new map. |
422d2cb8f ceph: reset osd a... |
1291 1292 1293 |
* * Caller should hold map_sem for read and request_mutex. */ |
38d6453ca libceph: force re... |
1294 |
static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8f ceph: reset osd a... |
1295 |
{ |
a40c4f10e libceph: add ling... |
1296 |
struct ceph_osd_request *req, *nreq; |
6f6c70067 libceph: fix osd ... |
1297 1298 1299 |
struct rb_node *p; int needmap = 0; int err; |
422d2cb8f ceph: reset osd a... |
1300 |
|
38d6453ca libceph: force re... |
1301 1302 |
dout("kick_requests %s ", force_resend ? " (force resend)" : ""); |
422d2cb8f ceph: reset osd a... |
1303 |
mutex_lock(&osdc->request_mutex); |
6f6c70067 libceph: fix osd ... |
1304 1305 |
for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { req = rb_entry(p, struct ceph_osd_request, r_node); |
38d6453ca libceph: force re... |
1306 |
err = __map_request(osdc, req, force_resend); |
6f6c70067 libceph: fix osd ... |
1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 |
if (err < 0) continue; /* error */ if (req->r_osd == NULL) { dout("%p tid %llu maps to no osd ", req, req->r_tid); needmap++; /* request a newer map */ } else if (err > 0) { dout("%p tid %llu requeued on osd%d ", req, req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); |
a40c4f10e libceph: add ling... |
1317 1318 1319 1320 1321 1322 1323 1324 1325 |
if (!req->r_linger) req->r_flags |= CEPH_OSD_FLAG_RETRY; } } list_for_each_entry_safe(req, nreq, &osdc->req_linger, r_linger_item) { dout("linger req=%p req->r_osd=%p ", req, req->r_osd); |
38d6453ca libceph: force re... |
1326 |
err = __map_request(osdc, req, force_resend); |
a40c4f10e libceph: add ling... |
1327 1328 1329 1330 1331 1332 1333 1334 1335 |
if (err == 0) continue; /* no change and no osd was specified */ if (err < 0) continue; /* hrm! */ if (req->r_osd == NULL) { dout("tid %llu maps to no valid osd ", req->r_tid); needmap++; /* request a newer map */ continue; |
6f6c70067 libceph: fix osd ... |
1336 |
} |
a40c4f10e libceph: add ling... |
1337 1338 1339 1340 1341 1342 |
dout("kicking lingering %p tid %llu osd%d ", req, req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); __unregister_linger_request(osdc, req); __register_request(osdc, req); |
6f6c70067 libceph: fix osd ... |
1343 |
} |
f24e9980e ceph: OSD client |
1344 1345 1346 1347 1348 1349 1350 |
mutex_unlock(&osdc->request_mutex); if (needmap) { dout("%d requests for down osds, need new map ", needmap); ceph_monc_request_next_osdmap(&osdc->client->monc); } |
422d2cb8f ceph: reset osd a... |
1351 |
} |
6f6c70067 libceph: fix osd ... |
1352 |
|
f24e9980e ceph: OSD client |
1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 |
/* * Process updated osd map. * * The message contains any number of incremental and full maps, normally * indicating some sort of topology change in the cluster. Kick requests * off to different OSDs as needed. */ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) { void *p, *end, *next; u32 nr_maps, maplen; u32 epoch; struct ceph_osdmap *newmap = NULL, *oldmap; int err; struct ceph_fsid fsid; dout("handle_map have %u ", osdc->osdmap ? osdc->osdmap->epoch : 0); p = msg->front.iov_base; end = p + msg->front.iov_len; /* verify fsid */ ceph_decode_need(&p, end, sizeof(fsid), bad); ceph_decode_copy(&p, &fsid, sizeof(fsid)); |
0743304d8 ceph: fix debugfs... |
1377 1378 |
if (ceph_check_fsid(osdc->client, &fsid) < 0) return; |
f24e9980e ceph: OSD client |
1379 1380 1381 1382 1383 1384 1385 1386 1387 |
down_write(&osdc->map_sem); /* incremental maps */ ceph_decode_32_safe(&p, end, nr_maps, bad); dout(" %d inc maps ", nr_maps); while (nr_maps > 0) { ceph_decode_need(&p, end, 2*sizeof(u32), bad); |
c89136ea4 ceph: convert enc... |
1388 1389 |
epoch = ceph_decode_32(&p); maplen = ceph_decode_32(&p); |
f24e9980e ceph: OSD client |
1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 |
ceph_decode_need(&p, end, maplen, bad); next = p + maplen; if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { dout("applying incremental map %u len %d ", epoch, maplen); newmap = osdmap_apply_incremental(&p, next, osdc->osdmap, osdc->client->msgr); if (IS_ERR(newmap)) { err = PTR_ERR(newmap); goto bad; } |
30dc6381b ceph: fix error p... |
1403 |
BUG_ON(!newmap); |
f24e9980e ceph: OSD client |
1404 1405 1406 1407 |
if (newmap != osdc->osdmap) { ceph_osdmap_destroy(osdc->osdmap); osdc->osdmap = newmap; } |
38d6453ca libceph: force re... |
1408 |
kick_requests(osdc, 0); |
6f6c70067 libceph: fix osd ... |
1409 |
reset_changed_osds(osdc); |
f24e9980e ceph: OSD client |
1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 |
} else { dout("ignoring incremental map %u len %d ", epoch, maplen); } p = next; nr_maps--; } if (newmap) goto done; /* full maps */ ceph_decode_32_safe(&p, end, nr_maps, bad); dout(" %d full maps ", nr_maps); while (nr_maps) { ceph_decode_need(&p, end, 2*sizeof(u32), bad); |
c89136ea4 ceph: convert enc... |
1427 1428 |
epoch = ceph_decode_32(&p); maplen = ceph_decode_32(&p); |
f24e9980e ceph: OSD client |
1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 |
ceph_decode_need(&p, end, maplen, bad); if (nr_maps > 1) { dout("skipping non-latest full map %u len %d ", epoch, maplen); } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { dout("skipping full map %u len %d, " "older than our %u ", epoch, maplen, osdc->osdmap->epoch); } else { |
38d6453ca libceph: force re... |
1440 |
int skipped_map = 0; |
f24e9980e ceph: OSD client |
1441 1442 1443 1444 1445 1446 1447 |
dout("taking full map %u len %d ", epoch, maplen); newmap = osdmap_decode(&p, p+maplen); if (IS_ERR(newmap)) { err = PTR_ERR(newmap); goto bad; } |
30dc6381b ceph: fix error p... |
1448 |
BUG_ON(!newmap); |
f24e9980e ceph: OSD client |
1449 1450 |
oldmap = osdc->osdmap; osdc->osdmap = newmap; |
38d6453ca libceph: force re... |
1451 1452 1453 |
if (oldmap) { if (oldmap->epoch + 1 < newmap->epoch) skipped_map = 1; |
f24e9980e ceph: OSD client |
1454 |
ceph_osdmap_destroy(oldmap); |
38d6453ca libceph: force re... |
1455 1456 |
} kick_requests(osdc, skipped_map); |
f24e9980e ceph: OSD client |
1457 1458 1459 1460 1461 1462 1463 1464 |
} p += maplen; nr_maps--; } done: downgrade_write(&osdc->map_sem); ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); |
cd634fb6e libceph: subscrib... |
1465 1466 1467 1468 1469 1470 1471 1472 |
/* * subscribe to subsequent osdmap updates if full to ensure * we find out when we are no longer full and stop returning * ENOSPC. */ if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) ceph_monc_request_next_osdmap(&osdc->client->monc); |
6f6c70067 libceph: fix osd ... |
1473 |
send_queued(osdc); |
f24e9980e ceph: OSD client |
1474 |
up_read(&osdc->map_sem); |
03066f234 ceph: use complet... |
1475 |
wake_up_all(&osdc->client->auth_wq); |
f24e9980e ceph: OSD client |
1476 1477 1478 1479 1480 |
return; bad: pr_err("osdc handle_map corrupt msg "); |
9ec7cab14 ceph: hex dump co... |
1481 |
ceph_msg_dump(msg); |
f24e9980e ceph: OSD client |
1482 1483 1484 |
up_write(&osdc->map_sem); return; } |
f24e9980e ceph: OSD client |
1485 |
/* |
a40c4f10e libceph: add ling... |
1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 |
* watch/notify callback event infrastructure * * These callbacks are used both for watch and notify operations. */ static void __release_event(struct kref *kref) { struct ceph_osd_event *event = container_of(kref, struct ceph_osd_event, kref); dout("__release_event %p ", event); kfree(event); } static void get_event(struct ceph_osd_event *event) { kref_get(&event->kref); } void ceph_osdc_put_event(struct ceph_osd_event *event) { kref_put(&event->kref, __release_event); } EXPORT_SYMBOL(ceph_osdc_put_event); static void __insert_event(struct ceph_osd_client *osdc, struct ceph_osd_event *new) { struct rb_node **p = &osdc->event_tree.rb_node; struct rb_node *parent = NULL; struct ceph_osd_event *event = NULL; while (*p) { parent = *p; event = rb_entry(parent, struct ceph_osd_event, node); if (new->cookie < event->cookie) p = &(*p)->rb_left; else if (new->cookie > event->cookie) p = &(*p)->rb_right; else BUG(); } rb_link_node(&new->node, parent, p); rb_insert_color(&new->node, &osdc->event_tree); } static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, u64 cookie) { struct rb_node **p = &osdc->event_tree.rb_node; struct rb_node *parent = NULL; struct ceph_osd_event *event = NULL; while (*p) { parent = *p; event = rb_entry(parent, struct ceph_osd_event, node); if (cookie < event->cookie) p = &(*p)->rb_left; else if (cookie > event->cookie) p = &(*p)->rb_right; else return event; } return NULL; } static void __remove_event(struct ceph_osd_event *event) { struct ceph_osd_client *osdc = event->osdc; if (!RB_EMPTY_NODE(&event->node)) { dout("__remove_event removed %p ", event); rb_erase(&event->node, &osdc->event_tree); ceph_osdc_put_event(event); } else { dout("__remove_event didn't remove %p ", event); } } int ceph_osdc_create_event(struct ceph_osd_client *osdc, void (*event_cb)(u64, u64, u8, void *), int one_shot, void *data, struct ceph_osd_event **pevent) { struct ceph_osd_event *event; event = kmalloc(sizeof(*event), GFP_NOIO); if (!event) return -ENOMEM; dout("create_event %p ", event); event->cb = event_cb; event->one_shot = one_shot; event->data = data; event->osdc = osdc; INIT_LIST_HEAD(&event->osd_node); kref_init(&event->kref); /* one ref for us */ kref_get(&event->kref); /* one ref for the caller */ init_completion(&event->completion); spin_lock(&osdc->event_lock); event->cookie = ++osdc->event_count; __insert_event(osdc, event); spin_unlock(&osdc->event_lock); *pevent = event; return 0; } EXPORT_SYMBOL(ceph_osdc_create_event); void ceph_osdc_cancel_event(struct ceph_osd_event *event) { struct ceph_osd_client *osdc = event->osdc; dout("cancel_event %p ", event); spin_lock(&osdc->event_lock); __remove_event(event); spin_unlock(&osdc->event_lock); ceph_osdc_put_event(event); /* caller's */ } EXPORT_SYMBOL(ceph_osdc_cancel_event); static void do_event_work(struct work_struct *work) { struct ceph_osd_event_work *event_work = container_of(work, struct ceph_osd_event_work, work); struct ceph_osd_event *event = event_work->event; u64 ver = event_work->ver; u64 notify_id = event_work->notify_id; u8 opcode = event_work->opcode; dout("do_event_work completing %p ", event); event->cb(ver, notify_id, opcode, event->data); complete(&event->completion); dout("do_event_work completed %p ", event); ceph_osdc_put_event(event); kfree(event_work); } /* * Process osd watch notifications */ void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg) { void *p, *end; u8 proto_ver; u64 cookie, ver, notify_id; u8 opcode; struct ceph_osd_event *event; struct ceph_osd_event_work *event_work; p = msg->front.iov_base; end = p + msg->front.iov_len; ceph_decode_8_safe(&p, end, proto_ver, bad); ceph_decode_8_safe(&p, end, opcode, bad); ceph_decode_64_safe(&p, end, cookie, bad); ceph_decode_64_safe(&p, end, ver, bad); ceph_decode_64_safe(&p, end, notify_id, bad); spin_lock(&osdc->event_lock); event = __find_event(osdc, cookie); if (event) { get_event(event); if (event->one_shot) __remove_event(event); } spin_unlock(&osdc->event_lock); dout("handle_watch_notify cookie %lld ver %lld event %p ", cookie, ver, event); if (event) { event_work = kmalloc(sizeof(*event_work), GFP_NOIO); |
a40c4f10e libceph: add ling... |
1668 1669 1670 1671 1672 |
if (!event_work) { dout("ERROR: could not allocate event_work "); goto done_err; } |
6b0ae4097 ceph: fix possibl... |
1673 |
INIT_WORK(&event_work->work, do_event_work); |
a40c4f10e libceph: add ling... |
1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 |
event_work->event = event; event_work->ver = ver; event_work->notify_id = notify_id; event_work->opcode = opcode; if (!queue_work(osdc->notify_wq, &event_work->work)) { dout("WARNING: failed to queue notify event work "); goto done_err; } } return; done_err: complete(&event->completion); ceph_osdc_put_event(event); return; bad: pr_err("osdc handle_watch_notify corrupt msg "); return; } int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout) { int err; dout("wait_event %p ", event); err = wait_for_completion_interruptible_timeout(&event->completion, timeout * HZ); ceph_osdc_put_event(event); if (err > 0) err = 0; dout("wait_event %p returns %d ", event, err); return err; } EXPORT_SYMBOL(ceph_osdc_wait_event); /* |
f24e9980e ceph: OSD client |
1716 1717 1718 1719 1720 1721 |
* Register request, send initial attempt. */ int ceph_osdc_start_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req, bool nofail) { |
c1ea8823b ceph: fix osd req... |
1722 |
int rc = 0; |
f24e9980e ceph: OSD client |
1723 1724 1725 |
req->r_request->pages = req->r_pages; req->r_request->nr_pages = req->r_num_pages; |
68b4476b0 ceph: messenger a... |
1726 1727 1728 1729 |
#ifdef CONFIG_BLOCK req->r_request->bio = req->r_bio; #endif req->r_request->trail = req->r_trail; |
f24e9980e ceph: OSD client |
1730 1731 1732 1733 1734 |
register_request(osdc, req); down_read(&osdc->map_sem); mutex_lock(&osdc->request_mutex); |
c1ea8823b ceph: fix osd req... |
1735 1736 1737 1738 1739 1740 |
/* * a racing kick_requests() may have sent the message for us * while we dropped request_mutex above, so only send now if * the request still han't been touched yet. */ if (req->r_sent == 0) { |
38d6453ca libceph: force re... |
1741 |
rc = __map_request(osdc, req, 0); |
9d6fcb081 ceph: check retur... |
1742 1743 1744 1745 1746 1747 1748 |
if (rc < 0) { if (nofail) { dout("osdc_start_request failed map, " " will retry %lld ", req->r_tid); rc = 0; } |
234af26ff ceph: unlock on e... |
1749 |
goto out_unlock; |
9d6fcb081 ceph: check retur... |
1750 |
} |
6f6c70067 libceph: fix osd ... |
1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 |
if (req->r_osd == NULL) { dout("send_request %p no up osds in pg ", req); ceph_monc_request_next_osdmap(&osdc->client->monc); } else { rc = __send_request(osdc, req); if (rc) { if (nofail) { dout("osdc_start_request failed send, " " will retry %lld ", req->r_tid); rc = 0; } else { __unregister_request(osdc, req); } |
c1ea8823b ceph: fix osd req... |
1766 |
} |
f24e9980e ceph: OSD client |
1767 1768 |
} } |
234af26ff ceph: unlock on e... |
1769 1770 |
out_unlock: |
f24e9980e ceph: OSD client |
1771 1772 1773 1774 |
mutex_unlock(&osdc->request_mutex); up_read(&osdc->map_sem); return rc; } |
3d14c5d2b ceph: factor out ... |
1775 |
EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980e ceph: OSD client |
1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 |
/* * wait for a request to complete */ int ceph_osdc_wait_request(struct ceph_osd_client *osdc, struct ceph_osd_request *req) { int rc; rc = wait_for_completion_interruptible(&req->r_completion); if (rc < 0) { mutex_lock(&osdc->request_mutex); __cancel_request(req); |
529cfcc46 ceph: unregister ... |
1789 |
__unregister_request(osdc, req); |
f24e9980e ceph: OSD client |
1790 |
mutex_unlock(&osdc->request_mutex); |
258454723 ceph: fix sync vs... |
1791 |
complete_request(req); |
529cfcc46 ceph: unregister ... |
1792 1793 |
dout("wait_request tid %llu canceled/timed out ", req->r_tid); |
f24e9980e ceph: OSD client |
1794 1795 1796 1797 1798 1799 1800 |
return rc; } dout("wait_request tid %llu result %d ", req->r_tid, req->r_result); return req->r_result; } |
3d14c5d2b ceph: factor out ... |
1801 |
EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980e ceph: OSD client |
1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 |
/* * sync - wait for all in-flight requests to flush. avoid starvation. */ void ceph_osdc_sync(struct ceph_osd_client *osdc) { struct ceph_osd_request *req; u64 last_tid, next_tid = 0; mutex_lock(&osdc->request_mutex); last_tid = osdc->last_tid; while (1) { req = __lookup_request_ge(osdc, next_tid); if (!req) break; if (req->r_tid > last_tid) break; next_tid = req->r_tid + 1; if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) continue; ceph_osdc_get_request(req); mutex_unlock(&osdc->request_mutex); dout("sync waiting on tid %llu (last is %llu) ", req->r_tid, last_tid); wait_for_completion(&req->r_safe_completion); mutex_lock(&osdc->request_mutex); ceph_osdc_put_request(req); } mutex_unlock(&osdc->request_mutex); dout("sync done (thru tid %llu) ", last_tid); } |
3d14c5d2b ceph: factor out ... |
1837 |
EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980e ceph: OSD client |
1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 |
/* * init, shutdown */ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) { int err; dout("init "); osdc->client = client; osdc->osdmap = NULL; init_rwsem(&osdc->map_sem); init_completion(&osdc->map_waiters); osdc->last_requested_map = 0; mutex_init(&osdc->request_mutex); |
f24e9980e ceph: OSD client |
1854 1855 |
osdc->last_tid = 0; osdc->osds = RB_ROOT; |
f5a2041bd ceph: put unused ... |
1856 |
INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980e ceph: OSD client |
1857 |
osdc->requests = RB_ROOT; |
422d2cb8f ceph: reset osd a... |
1858 |
INIT_LIST_HEAD(&osdc->req_lru); |
6f6c70067 libceph: fix osd ... |
1859 1860 |
INIT_LIST_HEAD(&osdc->req_unsent); INIT_LIST_HEAD(&osdc->req_notarget); |
a40c4f10e libceph: add ling... |
1861 |
INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980e ceph: OSD client |
1862 1863 |
osdc->num_requests = 0; INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); |
f5a2041bd ceph: put unused ... |
1864 |
INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10e libceph: add ling... |
1865 1866 1867 |
spin_lock_init(&osdc->event_lock); osdc->event_tree = RB_ROOT; osdc->event_count = 0; |
f5a2041bd ceph: put unused ... |
1868 1869 |
schedule_delayed_work(&osdc->osds_timeout_work, |
3d14c5d2b ceph: factor out ... |
1870 |
round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980e ceph: OSD client |
1871 |
|
5f44f1426 ceph: handle erro... |
1872 |
err = -ENOMEM; |
f24e9980e ceph: OSD client |
1873 1874 1875 |
osdc->req_mempool = mempool_create_kmalloc_pool(10, sizeof(struct ceph_osd_request)); if (!osdc->req_mempool) |
5f44f1426 ceph: handle erro... |
1876 |
goto out; |
f24e9980e ceph: OSD client |
1877 |
|
4f48280ee ceph: name msgpoo... |
1878 1879 |
err = ceph_msgpool_init(&osdc->msgpool_op, OSD_OP_FRONT_LEN, 10, true, "osd_op"); |
f24e9980e ceph: OSD client |
1880 |
if (err < 0) |
5f44f1426 ceph: handle erro... |
1881 |
goto out_mempool; |
c16e78692 ceph: use single ... |
1882 |
err = ceph_msgpool_init(&osdc->msgpool_op_reply, |
4f48280ee ceph: name msgpoo... |
1883 1884 |
OSD_OPREPLY_FRONT_LEN, 10, true, "osd_op_reply"); |
c16e78692 ceph: use single ... |
1885 1886 |
if (err < 0) goto out_msgpool; |
a40c4f10e libceph: add ling... |
1887 1888 1889 1890 1891 1892 1893 |
osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); if (IS_ERR(osdc->notify_wq)) { err = PTR_ERR(osdc->notify_wq); osdc->notify_wq = NULL; goto out_msgpool; } |
f24e9980e ceph: OSD client |
1894 |
return 0; |
5f44f1426 ceph: handle erro... |
1895 |
|
c16e78692 ceph: use single ... |
1896 1897 |
out_msgpool: ceph_msgpool_destroy(&osdc->msgpool_op); |
5f44f1426 ceph: handle erro... |
1898 1899 1900 1901 |
out_mempool: mempool_destroy(osdc->req_mempool); out: return err; |
f24e9980e ceph: OSD client |
1902 |
} |
3d14c5d2b ceph: factor out ... |
1903 |
EXPORT_SYMBOL(ceph_osdc_init); |
f24e9980e ceph: OSD client |
1904 1905 1906 |
void ceph_osdc_stop(struct ceph_osd_client *osdc) { |
a40c4f10e libceph: add ling... |
1907 1908 |
flush_workqueue(osdc->notify_wq); destroy_workqueue(osdc->notify_wq); |
f24e9980e ceph: OSD client |
1909 |
cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041bd ceph: put unused ... |
1910 |
cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980e ceph: OSD client |
1911 1912 1913 1914 |
if (osdc->osdmap) { ceph_osdmap_destroy(osdc->osdmap); osdc->osdmap = NULL; } |
aca420bc5 libceph: fix leak... |
1915 |
remove_all_osds(osdc); |
f24e9980e ceph: OSD client |
1916 1917 |
mempool_destroy(osdc->req_mempool); ceph_msgpool_destroy(&osdc->msgpool_op); |
c16e78692 ceph: use single ... |
1918 |
ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980e ceph: OSD client |
1919 |
} |
3d14c5d2b ceph: factor out ... |
1920 |
EXPORT_SYMBOL(ceph_osdc_stop); |
f24e9980e ceph: OSD client |
1921 1922 1923 1924 1925 1926 1927 1928 1929 |
/* * Read some contiguous pages. If we cross a stripe boundary, shorten * *plen. Return number of bytes read, or error. */ int ceph_osdc_readpages(struct ceph_osd_client *osdc, struct ceph_vino vino, struct ceph_file_layout *layout, u64 off, u64 *plen, u32 truncate_seq, u64 truncate_size, |
b7495fc2f ceph: make page a... |
1930 |
struct page **pages, int num_pages, int page_align) |
f24e9980e ceph: OSD client |
1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 |
{ struct ceph_osd_request *req; int rc = 0; dout("readpages on ino %llx.%llx on %llu~%llu ", vino.ino, vino.snap, off, *plen); req = ceph_osdc_new_request(osdc, layout, vino, off, plen, CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, NULL, 0, truncate_seq, truncate_size, NULL, |
b7495fc2f ceph: make page a... |
1941 |
false, 1, page_align); |
a79832f26 ceph: make ceph_m... |
1942 1943 |
if (!req) return -ENOMEM; |
f24e9980e ceph: OSD client |
1944 1945 1946 |
/* it may be a short read due to an object boundary */ req->r_pages = pages; |
f24e9980e ceph: OSD client |
1947 |
|
b7495fc2f ceph: make page a... |
1948 1949 1950 |
dout("readpages final extent is %llu~%llu (%d pages align %d) ", off, *plen, req->r_num_pages, page_align); |
f24e9980e ceph: OSD client |
1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 |
rc = ceph_osdc_start_request(osdc, req, false); if (!rc) rc = ceph_osdc_wait_request(osdc, req); ceph_osdc_put_request(req); dout("readpages result %d ", rc); return rc; } |
3d14c5d2b ceph: factor out ... |
1961 |
EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980e ceph: OSD client |
1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 |
/* * do a synchronous write on N pages */ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, struct ceph_file_layout *layout, struct ceph_snap_context *snapc, u64 off, u64 len, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, struct page **pages, int num_pages, int flags, int do_sync, bool nofail) { struct ceph_osd_request *req; int rc = 0; |
b7495fc2f ceph: make page a... |
1977 |
int page_align = off & ~PAGE_MASK; |
f24e9980e ceph: OSD client |
1978 1979 1980 1981 1982 1983 1984 1985 |
BUG_ON(vino.snap != CEPH_NOSNAP); req = ceph_osdc_new_request(osdc, layout, vino, off, &len, CEPH_OSD_OP_WRITE, flags | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, snapc, do_sync, truncate_seq, truncate_size, mtime, |
b7495fc2f ceph: make page a... |
1986 |
nofail, 1, page_align); |
a79832f26 ceph: make ceph_m... |
1987 1988 |
if (!req) return -ENOMEM; |
f24e9980e ceph: OSD client |
1989 1990 1991 |
/* it may be a short write due to an object boundary */ req->r_pages = pages; |
f24e9980e ceph: OSD client |
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 |
dout("writepages %llu~%llu (%d pages) ", off, len, req->r_num_pages); rc = ceph_osdc_start_request(osdc, req, nofail); if (!rc) rc = ceph_osdc_wait_request(osdc, req); ceph_osdc_put_request(req); if (rc == 0) rc = len; dout("writepages result %d ", rc); return rc; } |
3d14c5d2b ceph: factor out ... |
2007 |
EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980e ceph: OSD client |
2008 2009 2010 2011 2012 2013 2014 |
/* * handle incoming message */ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) { struct ceph_osd *osd = con->private; |
32c895e77 fs/ceph: Move a d... |
2015 |
struct ceph_osd_client *osdc; |
f24e9980e ceph: OSD client |
2016 2017 2018 |
int type = le16_to_cpu(msg->hdr.type); if (!osd) |
4a32f93d2 ceph: fix map han... |
2019 |
goto out; |
32c895e77 fs/ceph: Move a d... |
2020 |
osdc = osd->o_osdc; |
f24e9980e ceph: OSD client |
2021 2022 2023 2024 2025 2026 |
switch (type) { case CEPH_MSG_OSD_MAP: ceph_osdc_handle_map(osdc, msg); break; case CEPH_MSG_OSD_OPREPLY: |
350b1c32e ceph: control acc... |
2027 |
handle_reply(osdc, msg, con); |
f24e9980e ceph: OSD client |
2028 |
break; |
a40c4f10e libceph: add ling... |
2029 2030 2031 |
case CEPH_MSG_WATCH_NOTIFY: handle_watch_notify(osdc, msg); break; |
f24e9980e ceph: OSD client |
2032 2033 2034 2035 2036 2037 |
default: pr_err("received unknown message type %d %s ", type, ceph_msg_type_name(type)); } |
4a32f93d2 ceph: fix map han... |
2038 |
out: |
f24e9980e ceph: OSD client |
2039 2040 |
ceph_msg_put(msg); } |
5b3a4db3e ceph: fix up unex... |
2041 |
/* |
21b667f69 ceph: simplify pa... |
2042 2043 |
* lookup and return message for incoming reply. set up reply message * pages. |
5b3a4db3e ceph: fix up unex... |
2044 2045 |
*/ static struct ceph_msg *get_reply(struct ceph_connection *con, |
2450418c4 ceph: allocate mi... |
2046 2047 |
struct ceph_msg_header *hdr, int *skip) |
f24e9980e ceph: OSD client |
2048 2049 2050 |
{ struct ceph_osd *osd = con->private; struct ceph_osd_client *osdc = osd->o_osdc; |
2450418c4 ceph: allocate mi... |
2051 |
struct ceph_msg *m; |
0547a9b30 ceph: alloc messa... |
2052 |
struct ceph_osd_request *req; |
5b3a4db3e ceph: fix up unex... |
2053 2054 |
int front = le32_to_cpu(hdr->front_len); int data_len = le32_to_cpu(hdr->data_len); |
0547a9b30 ceph: alloc messa... |
2055 |
u64 tid; |
f24e9980e ceph: OSD client |
2056 |
|
0547a9b30 ceph: alloc messa... |
2057 2058 2059 2060 2061 2062 |
tid = le64_to_cpu(hdr->tid); mutex_lock(&osdc->request_mutex); req = __lookup_request(osdc, tid); if (!req) { *skip = 1; m = NULL; |
c16e78692 ceph: use single ... |
2063 2064 |
pr_info("get_reply unknown tid %llu from osd%d ", tid, |
5b3a4db3e ceph: fix up unex... |
2065 |
osd->o_osd); |
0547a9b30 ceph: alloc messa... |
2066 2067 |
goto out; } |
c16e78692 ceph: use single ... |
2068 2069 2070 2071 2072 2073 2074 |
if (req->r_con_filling_msg) { dout("get_reply revoking msg %p from old con %p ", req->r_reply, req->r_con_filling_msg); ceph_con_revoke_message(req->r_con_filling_msg, req->r_reply); ceph_con_put(req->r_con_filling_msg); |
6f46cb293 ceph: fix theoret... |
2075 |
req->r_con_filling_msg = NULL; |
0547a9b30 ceph: alloc messa... |
2076 |
} |
c16e78692 ceph: use single ... |
2077 2078 2079 2080 |
if (front > req->r_reply->front.iov_len) { pr_warning("get_reply front %d > preallocated %d ", front, (int)req->r_reply->front.iov_len); |
b61c27636 libceph: don't co... |
2081 |
m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f26 ceph: make ceph_m... |
2082 |
if (!m) |
c16e78692 ceph: use single ... |
2083 2084 2085 2086 2087 |
goto out; ceph_msg_put(req->r_reply); req->r_reply = m; } m = ceph_msg_get(req->r_reply); |
0547a9b30 ceph: alloc messa... |
2088 |
if (data_len > 0) { |
b7495fc2f ceph: make page a... |
2089 |
int want = calc_pages_for(req->r_page_alignment, data_len); |
21b667f69 ceph: simplify pa... |
2090 2091 |
if (unlikely(req->r_num_pages < want)) { |
9bb0ce2b0 libceph: fix page... |
2092 2093 2094 2095 |
pr_warning("tid %lld reply has %d bytes %d pages, we" " had only %d pages ready ", tid, data_len, want, req->r_num_pages); |
0547a9b30 ceph: alloc messa... |
2096 2097 |
*skip = 1; ceph_msg_put(m); |
a79832f26 ceph: make ceph_m... |
2098 |
m = NULL; |
21b667f69 ceph: simplify pa... |
2099 |
goto out; |
0547a9b30 ceph: alloc messa... |
2100 |
} |
21b667f69 ceph: simplify pa... |
2101 2102 |
m->pages = req->r_pages; m->nr_pages = req->r_num_pages; |
c5c6b19d4 ceph: explicitly ... |
2103 |
m->page_alignment = req->r_page_alignment; |
68b4476b0 ceph: messenger a... |
2104 2105 2106 |
#ifdef CONFIG_BLOCK m->bio = req->r_bio; #endif |
0547a9b30 ceph: alloc messa... |
2107 |
} |
5b3a4db3e ceph: fix up unex... |
2108 |
*skip = 0; |
c16e78692 ceph: use single ... |
2109 2110 2111 |
req->r_con_filling_msg = ceph_con_get(con); dout("get_reply tid %lld %p ", tid, m); |
0547a9b30 ceph: alloc messa... |
2112 2113 2114 |
out: mutex_unlock(&osdc->request_mutex); |
2450418c4 ceph: allocate mi... |
2115 |
return m; |
5b3a4db3e ceph: fix up unex... |
2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 |
} static struct ceph_msg *alloc_msg(struct ceph_connection *con, struct ceph_msg_header *hdr, int *skip) { struct ceph_osd *osd = con->private; int type = le16_to_cpu(hdr->type); int front = le32_to_cpu(hdr->front_len); switch (type) { case CEPH_MSG_OSD_MAP: |
a40c4f10e libceph: add ling... |
2129 |
case CEPH_MSG_WATCH_NOTIFY: |
b61c27636 libceph: don't co... |
2130 |
return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3e ceph: fix up unex... |
2131 2132 2133 2134 2135 2136 2137 2138 2139 |
case CEPH_MSG_OSD_OPREPLY: return get_reply(con, hdr, skip); default: pr_info("alloc_msg unexpected msg type %d from osd%d ", type, osd->o_osd); *skip = 1; return NULL; } |
f24e9980e ceph: OSD client |
2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 |
} /* * Wrappers to refcount containing ceph_osd struct */ static struct ceph_connection *get_osd_con(struct ceph_connection *con) { struct ceph_osd *osd = con->private; if (get_osd(osd)) return con; return NULL; } static void put_osd_con(struct ceph_connection *con) { struct ceph_osd *osd = con->private; put_osd(osd); } |
4e7a5dcd1 ceph: negotiate a... |
2158 2159 2160 2161 |
/* * authentication */ static int get_authorizer(struct ceph_connection *con, |
213c99ee0 ceph: whitespace ... |
2162 2163 |
void **buf, int *len, int *proto, void **reply_buf, int *reply_len, int force_new) |
4e7a5dcd1 ceph: negotiate a... |
2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 |
{ struct ceph_osd *o = con->private; struct ceph_osd_client *osdc = o->o_osdc; struct ceph_auth_client *ac = osdc->client->monc.auth; int ret = 0; if (force_new && o->o_authorizer) { ac->ops->destroy_authorizer(ac, o->o_authorizer); o->o_authorizer = NULL; } if (o->o_authorizer == NULL) { ret = ac->ops->create_authorizer( ac, CEPH_ENTITY_TYPE_OSD, &o->o_authorizer, &o->o_authorizer_buf, &o->o_authorizer_buf_len, &o->o_authorizer_reply_buf, &o->o_authorizer_reply_buf_len); if (ret) |
213c99ee0 ceph: whitespace ... |
2183 |
return ret; |
4e7a5dcd1 ceph: negotiate a... |
2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 |
} *proto = ac->protocol; *buf = o->o_authorizer_buf; *len = o->o_authorizer_buf_len; *reply_buf = o->o_authorizer_reply_buf; *reply_len = o->o_authorizer_reply_buf_len; return 0; } static int verify_authorizer_reply(struct ceph_connection *con, int len) { struct ceph_osd *o = con->private; struct ceph_osd_client *osdc = o->o_osdc; struct ceph_auth_client *ac = osdc->client->monc.auth; return ac->ops->verify_authorizer_reply(ac, o->o_authorizer, len); } |
9bd2e6f8b ceph: allow renew... |
2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 |
static int invalidate_authorizer(struct ceph_connection *con) { struct ceph_osd *o = con->private; struct ceph_osd_client *osdc = o->o_osdc; struct ceph_auth_client *ac = osdc->client->monc.auth; if (ac->ops->invalidate_authorizer) ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); return ceph_monc_validate_auth(&osdc->client->monc); } |
4e7a5dcd1 ceph: negotiate a... |
2214 |
|
9e32789f6 ceph: Storage cla... |
2215 |
static const struct ceph_connection_operations osd_con_ops = { |
f24e9980e ceph: OSD client |
2216 2217 2218 |
.get = get_osd_con, .put = put_osd_con, .dispatch = dispatch, |
4e7a5dcd1 ceph: negotiate a... |
2219 2220 |
.get_authorizer = get_authorizer, .verify_authorizer_reply = verify_authorizer_reply, |
9bd2e6f8b ceph: allow renew... |
2221 |
.invalidate_authorizer = invalidate_authorizer, |
f24e9980e ceph: OSD client |
2222 |
.alloc_msg = alloc_msg, |
81b024e70 ceph: reset osd s... |
2223 |
.fault = osd_reset, |
f24e9980e ceph: OSD client |
2224 |
}; |