1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001-2003 Cluster File Systems, Inc.
5 * Author: Peter J. Braam <braam@clusterfs.com>
6 * Author: Phil Schwan <phil@clusterfs.com>
8 * This file is part of the Lustre file system, http://www.lustre.org
9 * Lustre is a trademark of Cluster File Systems, Inc.
11 * You may have signed or agreed to another license before downloading
12 * this software. If so, you are bound by the terms and conditions
13 * of that agreement, and the following does not apply to you. See the
14 * LICENSE file included with this distribution for more information.
16 * If you did not agree to a different license, then this copy of Lustre
17 * is open source software; you can redistribute it and/or modify it
18 * under the terms of version 2 of the GNU General Public License as
19 * published by the Free Software Foundation.
21 * In either case, Lustre is distributed in the hope that it will be
22 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
23 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * license text for more details.
26 * Storage Target Handling functions
27 * Lustre Object Server Module (OST)
29 * This server is single threaded at present (but can easily be multi
30 * threaded). For testing and management it is treated as an
31 * obd_device, although it does not export a full OBD method table
32 * (the requests are coming in over the wire, so object target
33 * modules do not have a full method table.)
37 # define EXPORT_SYMTAB
39 #define DEBUG_SUBSYSTEM S_OST
41 #include <linux/module.h>
43 #include <lustre_net.h>
44 #include <lustre_dlm.h>
45 #include <lustre_export.h>
46 #include <lustre_debug.h>
47 #include <linux/init.h>
48 #include <lprocfs_status.h>
49 #include <lustre_commit_confd.h>
50 #include <libcfs/list.h>
51 #include <lustre_quota.h>
52 #include "ost_internal.h"
54 static int oss_num_threads;
55 CFS_MODULE_PARM(oss_num_threads, "i", int, 0444,
56 "number of OSS service threads to start");
58 static int ost_num_threads;
59 CFS_MODULE_PARM(ost_num_threads, "i", int, 0444,
60 "number of OST service threads to start (deprecated)");
62 static int oss_num_create_threads;
63 CFS_MODULE_PARM(oss_num_create_threads, "i", int, 0444,
64 "number of OSS create threads to start");
66 void oti_to_request(struct obd_trans_info *oti, struct ptlrpc_request *req)
68 struct oti_req_ack_lock *ack_lock;
75 lustre_msg_set_transno(req->rq_repmsg, oti->oti_transno);
76 req->rq_transno = oti->oti_transno;
78 /* XXX 4 == entries in oti_ack_locks??? */
79 for (ack_lock = oti->oti_ack_locks, i = 0; i < 4; i++, ack_lock++) {
82 /* XXX not even calling target_send_reply in some cases... */
83 ptlrpc_save_lock (req, &ack_lock->lock, ack_lock->mode);
87 static int ost_destroy(struct obd_export *exp, struct ptlrpc_request *req,
88 struct obd_trans_info *oti)
90 struct ost_body *body, *repbody;
91 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
94 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
95 lustre_swab_ost_body);
99 if (lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1)) {
100 struct ldlm_request *dlm;
101 dlm = lustre_swab_reqbuf(req, REQ_REC_OFF + 1, sizeof(*dlm),
102 lustre_swab_ldlm_request);
105 ldlm_request_cancel(req, dlm, 0);
108 rc = lustre_pack_reply(req, 2, size, NULL);
112 if (body->oa.o_valid & OBD_MD_FLCOOKIE)
113 oti->oti_logcookies = obdo_logcookie(&body->oa);
114 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
116 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
117 req->rq_status = obd_destroy(exp, &body->oa, NULL, oti, NULL);
121 static int ost_getattr(struct obd_export *exp, struct ptlrpc_request *req)
123 struct ost_body *body, *repbody;
124 struct obd_info oinfo = { { { 0 } } };
125 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
128 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
129 lustre_swab_ost_body);
133 rc = lustre_pack_reply(req, 2, size, NULL);
137 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
139 repbody->oa = body->oa;
141 oinfo.oi_oa = &repbody->oa;
142 if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA)
143 oinfo.oi_capa = lustre_unpack_capa(req->rq_reqmsg,
145 req->rq_status = obd_getattr(exp, &oinfo);
149 static int ost_statfs(struct ptlrpc_request *req)
151 struct obd_statfs *osfs;
152 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*osfs) };
155 rc = lustre_pack_reply(req, 2, size, NULL);
159 osfs = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*osfs));
161 req->rq_status = obd_statfs(req->rq_export->exp_obd, osfs,
162 cfs_time_current_64() - HZ);
163 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_ENOSPC))
164 osfs->os_bfree = osfs->os_bavail = 64;
165 if (req->rq_status != 0)
166 CERROR("ost: statfs failed: rc %d\n", req->rq_status);
171 static int ost_create(struct obd_export *exp, struct ptlrpc_request *req,
172 struct obd_trans_info *oti)
174 struct ost_body *body, *repbody;
175 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
178 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
179 lustre_swab_ost_body);
183 rc = lustre_pack_reply(req, 2, size, NULL);
187 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
189 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
190 oti->oti_logcookies = obdo_logcookie(&repbody->oa);
191 req->rq_status = obd_create(exp, &repbody->oa, NULL, oti);
192 //obd_log_cancel(conn, NULL, 1, oti->oti_logcookies, 0);
197 * Helper function for ost_punch(): if asked by client, acquire [size, EOF]
198 * lock on the file being truncated.
200 static int ost_punch_lock_get(struct obd_export *exp, struct obdo *oa,
201 struct lustre_handle *lh)
204 struct ldlm_res_id res_id = { .name = { oa->o_id, 0, oa->o_gr, 0} };
205 ldlm_policy_data_t policy;
211 LASSERT(!lustre_handle_is_used(lh));
213 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
214 !(oa->o_flags & OBD_FL_TRUNCLOCK))
217 CDEBUG(D_INODE, "OST-side truncate lock.\n");
220 finis = start + oa->o_blocks;
223 * standard truncate optimization: if file body is completely
224 * destroyed, don't send data back to the server.
226 flags = (start == 0) ? LDLM_AST_DISCARD_DATA : 0;
228 policy.l_extent.start = start & CFS_PAGE_MASK;
231 * If ->o_blocks is EOF it means "lock till the end of the
232 * file". Otherwise, it's size of a hole being punched (in bytes)
234 if (oa->o_blocks == OBD_OBJECT_EOF || finis < start)
235 policy.l_extent.end = OBD_OBJECT_EOF;
237 policy.l_extent.end = finis | ~CFS_PAGE_MASK;
239 RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id,
240 LDLM_EXTENT, &policy, LCK_PW, &flags,
241 ldlm_blocking_ast, ldlm_completion_ast,
242 ldlm_glimpse_ast, NULL, 0, NULL, lh));
246 * Helper function for ost_punch(): release lock acquired by
247 * ost_punch_lock_get(), if any.
249 static void ost_punch_lock_put(struct obd_export *exp, struct obdo *oa,
250 struct lustre_handle *lh)
253 if (lustre_handle_is_used(lh))
254 ldlm_lock_decref(lh, LCK_PW);
258 static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
259 struct obd_trans_info *oti)
261 struct obd_info oinfo = { { { 0 } } };
262 struct ost_body *body, *repbody;
263 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
264 struct lustre_handle lh = {0,};
267 /* check that we do support OBD_CONNECT_TRUNCLOCK. */
268 CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
270 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
271 lustre_swab_ost_body);
275 oinfo.oi_oa = &body->oa;
276 oinfo.oi_policy.l_extent.start = oinfo.oi_oa->o_size;
277 oinfo.oi_policy.l_extent.end = oinfo.oi_oa->o_blocks;
279 if ((oinfo.oi_oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
280 (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
283 rc = lustre_pack_reply(req, 2, size, NULL);
287 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
289 rc = ost_punch_lock_get(exp, oinfo.oi_oa, &lh);
291 if (oinfo.oi_oa->o_valid & OBD_MD_FLFLAGS &&
292 oinfo.oi_oa->o_flags == OBD_FL_TRUNCLOCK)
294 * If OBD_FL_TRUNCLOCK is the only bit set in
295 * ->o_flags, clear OBD_MD_FLFLAGS to avoid falling
296 * through filter_setattr() to filter_iocontrol().
298 oinfo.oi_oa->o_valid &= ~OBD_MD_FLFLAGS;
300 if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA)
301 oinfo.oi_capa = lustre_unpack_capa(req->rq_reqmsg,
303 req->rq_status = obd_punch(exp, &oinfo, oti, NULL);
304 ost_punch_lock_put(exp, oinfo.oi_oa, &lh);
306 repbody->oa = *oinfo.oi_oa;
310 static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req)
312 struct ost_body *body, *repbody;
313 struct lustre_capa *capa = NULL;
314 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
317 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
318 lustre_swab_ost_body);
322 if (body->oa.o_valid & OBD_MD_FLOSSCAPA)
323 capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 1);
325 rc = lustre_pack_reply(req, 2, size, NULL);
329 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
331 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
332 req->rq_status = obd_sync(exp, &repbody->oa, NULL, repbody->oa.o_size,
333 repbody->oa.o_blocks, capa);
337 static int ost_setattr(struct obd_export *exp, struct ptlrpc_request *req,
338 struct obd_trans_info *oti)
340 struct ost_body *body, *repbody;
341 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
342 struct obd_info oinfo = { { { 0 } } };
345 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
346 lustre_swab_ost_body);
350 rc = lustre_pack_reply(req, 2, size, NULL);
354 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
356 repbody->oa = body->oa;
358 oinfo.oi_oa = &repbody->oa;
359 if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA)
360 oinfo.oi_capa = lustre_unpack_capa(req->rq_reqmsg,
362 req->rq_status = obd_setattr(exp, &oinfo, oti);
366 static int ost_bulk_timeout(void *data)
369 /* We don't fail the connection here, because having the export
370 * killed makes the (vital) call to commitrw very sad.
375 static int get_per_page_niobufs(struct obd_ioobj *ioo, int nioo,
376 struct niobuf_remote *rnb, int nrnb,
377 struct niobuf_remote **pp_rnbp)
379 /* Copy a remote niobuf, splitting it into page-sized chunks
380 * and setting ioo[i].ioo_bufcnt accordingly */
381 struct niobuf_remote *pp_rnb;
389 * array of sufficient size already preallocated by caller
391 LASSERT(pp_rnbp != NULL);
392 LASSERT(*pp_rnbp != NULL);
394 /* first count and check the number of pages required */
395 for (i = 0; i < nioo; i++)
396 for (j = 0; j < ioo->ioo_bufcnt; j++, rnbidx++) {
397 obd_off offset = rnb[rnbidx].offset;
398 obd_off p0 = offset >> CFS_PAGE_SHIFT;
399 obd_off pn = (offset + rnb[rnbidx].len - 1) >>
402 LASSERT(rnbidx < nrnb);
404 npages += (pn + 1 - p0);
406 if (rnb[rnbidx].len == 0) {
407 CERROR("zero len BRW: obj %d objid "LPX64
408 " buf %u\n", i, ioo[i].ioo_id, j);
412 rnb[rnbidx].offset <= rnb[rnbidx-1].offset) {
413 CERROR("unordered BRW: obj %d objid "LPX64
414 " buf %u offset "LPX64" <= "LPX64"\n",
415 i, ioo[i].ioo_id, j, rnb[rnbidx].offset,
421 LASSERT(rnbidx == nrnb);
423 if (npages == nrnb) { /* all niobufs are for single pages */
430 /* now do the actual split */
432 for (i = 0; i < nioo; i++) {
435 for (j = 0; j < ioo[i].ioo_bufcnt; j++, rnbidx++) {
436 obd_off off = rnb[rnbidx].offset;
437 int nob = rnb[rnbidx].len;
439 LASSERT(rnbidx < nrnb);
441 obd_off poff = off & ~CFS_PAGE_MASK;
442 int pnob = (poff + nob > CFS_PAGE_SIZE) ?
443 PAGE_SIZE - poff : nob;
445 LASSERT(page < npages);
446 pp_rnb[page].len = pnob;
447 pp_rnb[page].offset = off;
448 pp_rnb[page].flags = rnb[rnbidx].flags;
450 CDEBUG(0, " obj %d id "LPX64
451 "page %d(%d) "LPX64" for %d, flg %x\n",
452 i, ioo[i].ioo_id, obj_pages, page,
453 pp_rnb[page].offset, pp_rnb[page].len,
463 ioo[i].ioo_bufcnt = obj_pages;
465 LASSERT(page == npages);
470 static __u32 ost_checksum_bulk(struct ptlrpc_bulk_desc *desc)
475 for (i = 0; i < desc->bd_iov_count; i++) {
476 struct page *page = desc->bd_iov[i].kiov_page;
477 int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
478 char *ptr = kmap(page) + off;
479 int len = desc->bd_iov[i].kiov_len;
481 /* corrupt the data before we compute the checksum, to
482 * simulate a client->OST data error */
484 OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_CHECKSUM_RECEIVE))
485 memcpy(ptr, "bad3", min(4, len));
486 cksum = crc32_le(cksum, ptr, len);
487 /* corrupt the data after we compute the checksum, to
488 * simulate an OST->client data error */
489 if (i == 0 && OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_CHECKSUM_SEND))
490 memcpy(ptr, "bad4", min(4, len));
498 * populate @nio by @nrpages pages from per-thread page pool
500 static void ost_nio_pages_get(struct ptlrpc_request *req,
501 struct niobuf_local *nio, int nrpages)
504 struct ost_thread_local_cache *tls;
508 LASSERT(nrpages <= OST_THREAD_POOL_SIZE);
509 LASSERT(req != NULL);
510 LASSERT(req->rq_svc_thread != NULL);
513 LASSERT(tls != NULL);
515 memset(nio, 0, nrpages * sizeof *nio);
516 for (i = 0; i < nrpages; ++ i) {
520 LASSERT(page != NULL);
521 POISON_PAGE(page, 0xf1);
523 LL_CDEBUG_PAGE(D_INFO, page, "%d\n", i);
529 * Dual for ost_nio_pages_get(). Poison pages in pool for debugging
531 static void ost_nio_pages_put(struct ptlrpc_request *req,
532 struct niobuf_local *nio, int nrpages)
538 LASSERT(nrpages <= OST_THREAD_POOL_SIZE);
540 for (i = 0; i < nrpages; ++ i)
541 POISON_PAGE(nio[i].page, 0xf2);
545 static int ost_brw_lock_get(int mode, struct obd_export *exp,
546 struct obd_ioobj *obj, struct niobuf_remote *nb,
547 struct lustre_handle *lh)
550 int nrbufs = obj->ioo_bufcnt;
551 struct ldlm_res_id res_id = { .name = { obj->ioo_id, 0,
553 ldlm_policy_data_t policy;
558 LASSERT(mode == LCK_PR || mode == LCK_PW);
559 LASSERT(!lustre_handle_is_used(lh));
561 if (nrbufs == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK))
564 /* EXPENSIVE ASSERTION */
565 for (i = 1; i < nrbufs; i ++)
566 LASSERT((nb[0].flags & OBD_BRW_SRVLOCK) ==
567 (nb[i].flags & OBD_BRW_SRVLOCK));
569 policy.l_extent.start = nb[0].offset & CFS_PAGE_MASK;
570 policy.l_extent.end = (nb[nrbufs - 1].offset +
571 nb[nrbufs - 1].len - 1) | ~CFS_PAGE_MASK;
573 RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id,
574 LDLM_EXTENT, &policy, mode, &flags,
575 ldlm_blocking_ast, ldlm_completion_ast,
576 ldlm_glimpse_ast, NULL, 0, NULL, lh));
579 static void ost_brw_lock_put(int mode,
580 struct obd_ioobj *obj, struct niobuf_remote *niob,
581 struct lustre_handle *lh)
584 LASSERT(mode == LCK_PR || mode == LCK_PW);
585 LASSERT((obj->ioo_bufcnt > 0 && (niob[0].flags & OBD_BRW_SRVLOCK)) ==
586 lustre_handle_is_used(lh));
587 if (lustre_handle_is_used(lh))
588 ldlm_lock_decref(lh, mode);
592 struct ost_prolong_data {
593 struct obd_export *opd_exp;
594 ldlm_policy_data_t opd_policy;
595 ldlm_mode_t opd_mode;
598 static int ost_prolong_locks_iter(struct ldlm_lock *lock, void *data)
600 struct ost_prolong_data *opd = data;
602 LASSERT(lock->l_resource->lr_type == LDLM_EXTENT);
604 if (lock->l_req_mode != lock->l_granted_mode) {
605 /* scan granted locks only */
606 return LDLM_ITER_STOP;
609 if (lock->l_export != opd->opd_exp) {
610 /* prolong locks only for given client */
611 return LDLM_ITER_CONTINUE;
614 if (!(lock->l_granted_mode & opd->opd_mode)) {
615 /* we aren't interesting in all type of locks */
616 return LDLM_ITER_CONTINUE;
619 if (lock->l_policy_data.l_extent.end < opd->opd_policy.l_extent.start ||
620 lock->l_policy_data.l_extent.start > opd->opd_policy.l_extent.end) {
621 /* the request doesn't cross the lock, skip it */
622 return LDLM_ITER_CONTINUE;
625 if (!(lock->l_flags & LDLM_FL_AST_SENT)) {
626 /* ignore locks not being cancelled */
627 return LDLM_ITER_CONTINUE;
630 /* OK. this is a possible lock the user holds doing I/O
631 * let's refresh eviction timer for it */
632 ldlm_refresh_waiting_lock(lock);
634 return LDLM_ITER_CONTINUE;
637 static void ost_prolong_locks(struct obd_export *exp, struct obd_ioobj *obj,
638 struct niobuf_remote *nb, ldlm_mode_t mode)
640 struct ldlm_res_id res_id = { .name = { obj->ioo_id, 0,
642 int nrbufs = obj->ioo_bufcnt;
643 struct ost_prolong_data opd;
649 opd.opd_policy.l_extent.start = nb[0].offset & CFS_PAGE_MASK;
650 opd.opd_policy.l_extent.end = (nb[nrbufs - 1].offset +
651 nb[nrbufs - 1].len - 1) | ~CFS_PAGE_MASK;
653 CDEBUG(D_DLMTRACE,"refresh locks: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n",
654 res_id.name[0], res_id.name[1], opd.opd_policy.l_extent.start,
655 opd.opd_policy.l_extent.end);
656 ldlm_resource_iterate(exp->exp_obd->obd_namespace, &res_id,
657 ost_prolong_locks_iter, &opd);
660 static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
662 struct ptlrpc_bulk_desc *desc;
663 struct niobuf_remote *remote_nb;
664 struct niobuf_remote *pp_rnb = NULL;
665 struct niobuf_local *local_nb;
666 struct obd_ioobj *ioo;
667 struct ost_body *body, *repbody;
668 struct lustre_capa *capa = NULL;
669 struct l_wait_info lwi;
670 struct lustre_handle lockh = { 0 };
671 int size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
672 int comms_error = 0, niocount, npages, nob = 0, rc, i;
676 req->rq_bulk_read = 1;
678 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
679 GOTO(out, rc = -EIO);
681 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK | OBD_FAIL_ONCE,
682 (obd_timeout + 1) / 4);
684 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
685 lustre_swab_ost_body);
687 CERROR("Missing/short ost_body\n");
688 GOTO(out, rc = -EFAULT);
691 ioo = lustre_swab_reqbuf(req, REQ_REC_OFF + 1, sizeof(*ioo),
692 lustre_swab_obd_ioobj);
694 CERROR("Missing/short ioobj\n");
695 GOTO(out, rc = -EFAULT);
698 niocount = ioo->ioo_bufcnt;
699 if (niocount > PTLRPC_MAX_BRW_PAGES) {
700 DEBUG_REQ(D_ERROR, req, "bulk has too many pages (%d)",
702 GOTO(out, rc = -EFAULT);
705 remote_nb = lustre_swab_reqbuf(req, REQ_REC_OFF + 2,
706 niocount * sizeof(*remote_nb),
707 lustre_swab_niobuf_remote);
708 if (remote_nb == NULL) {
709 CERROR("Missing/short niobuf\n");
710 GOTO(out, rc = -EFAULT);
712 if (lustre_msg_swabbed(req->rq_reqmsg)) { /* swab remaining niobufs */
713 for (i = 1; i < niocount; i++)
714 lustre_swab_niobuf_remote (&remote_nb[i]);
717 if (body->oa.o_valid & OBD_MD_FLOSSCAPA)
718 capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 3);
720 rc = lustre_pack_reply(req, 2, size, NULL);
725 * Per-thread array of struct niobuf_{local,remote}'s was allocated by
728 local_nb = ost_tls(req)->local;
729 pp_rnb = ost_tls(req)->remote;
731 /* FIXME all niobuf splitting should be done in obdfilter if needed */
732 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
733 npages = get_per_page_niobufs(ioo, 1, remote_nb, niocount, &pp_rnb);
735 GOTO(out, rc = npages);
737 LASSERT(npages <= OST_THREAD_POOL_SIZE);
739 ost_nio_pages_get(req, local_nb, npages);
741 desc = ptlrpc_prep_bulk_exp(req, npages,
742 BULK_PUT_SOURCE, OST_BULK_PORTAL);
744 GOTO(out, rc = -ENOMEM);
746 rc = ost_brw_lock_get(LCK_PR, req->rq_export, ioo, pp_rnb, &lockh);
751 * If getting the lock took more time than
752 * client was willing to wait, drop it. b=11330
754 if (cfs_time_current_sec() > req->rq_arrival_time.tv_sec + obd_timeout ||
755 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
757 CERROR("Dropping timed-out read from %s because locking"
758 "object "LPX64" took %ld seconds.\n",
759 libcfs_id2str(req->rq_peer), ioo->ioo_id,
760 cfs_time_current_sec() - req->rq_arrival_time.tv_sec);
764 rc = obd_preprw(OBD_BRW_READ, req->rq_export, &body->oa, 1,
765 ioo, npages, pp_rnb, local_nb, oti, capa);
769 ost_prolong_locks(req->rq_export, ioo, pp_rnb, LCK_PW | LCK_PR);
772 for (i = 0; i < npages; i++) {
773 int page_rc = local_nb[i].rc;
775 if (page_rc < 0) { /* error */
780 LASSERTF(page_rc <= pp_rnb[i].len, "page_rc (%d) > "
781 "pp_rnb[%d].len (%d)\n", page_rc, i, pp_rnb[i].len);
783 if (page_rc != 0) { /* some data! */
784 LASSERT (local_nb[i].page != NULL);
785 ptlrpc_prep_bulk_page(desc, local_nb[i].page,
786 pp_rnb[i].offset & ~CFS_PAGE_MASK,
790 if (page_rc != pp_rnb[i].len) { /* short read */
791 /* All subsequent pages should be 0 */
793 LASSERT(local_nb[i].rc == 0);
798 if (unlikely(body->oa.o_valid & OBD_MD_FLCKSUM)) {
799 body->oa.o_cksum = ost_checksum_bulk(desc);
800 body->oa.o_valid = OBD_MD_FLCKSUM;
801 CDEBUG(D_PAGE,"checksum at read origin: %x\n",body->oa.o_cksum);
803 body->oa.o_valid = 0;
805 /* We're finishing using body->oa as an input variable */
807 /* Check if client was evicted while we were doing i/o before touching
810 if (desc->bd_export->exp_failed)
813 sptlrpc_svc_wrap_bulk(req, desc);
815 rc = ptlrpc_start_bulk_transfer(desc);
819 lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * HZ / 4, HZ,
820 ost_bulk_timeout, desc);
821 rc = l_wait_event(desc->bd_waitq,
822 !ptlrpc_bulk_active(desc) ||
823 desc->bd_export->exp_failed, &lwi);
824 LASSERT(rc == 0 || rc == -ETIMEDOUT);
825 if (rc == -ETIMEDOUT) {
826 DEBUG_REQ(D_ERROR, req, "timeout on bulk PUT");
827 ptlrpc_abort_bulk(desc);
828 } else if (desc->bd_export->exp_failed) {
829 DEBUG_REQ(D_ERROR, req, "Eviction on bulk PUT");
831 ptlrpc_abort_bulk(desc);
832 } else if (!desc->bd_success ||
833 desc->bd_nob_transferred != desc->bd_nob) {
834 DEBUG_REQ(D_ERROR, req, "%s bulk PUT %d(%d)",
836 "truncated" : "network error on",
837 desc->bd_nob_transferred,
839 /* XXX should this be a different errno? */
843 DEBUG_REQ(D_ERROR, req, "bulk PUT failed: rc %d", rc);
845 comms_error = rc != 0;
848 /* Must commit after prep above in all cases */
849 rc = obd_commitrw(OBD_BRW_READ, req->rq_export, &body->oa, 1,
850 ioo, npages, local_nb, oti, rc);
852 ost_nio_pages_put(req, local_nb, npages);
855 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
857 memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
861 ost_brw_lock_put(LCK_PR, ioo, pp_rnb, &lockh);
863 ptlrpc_free_bulk(desc);
869 req->rq_status = nob;
870 target_committed_to_req(req);
872 } else if (!comms_error) {
873 /* Only reply if there was no comms problem with bulk */
874 target_committed_to_req(req);
878 if (req->rq_reply_state != NULL) {
879 /* reply out callback would free */
880 ptlrpc_rs_decref(req->rq_reply_state);
881 req->rq_reply_state = NULL;
883 CWARN("%s: ignoring bulk IO comm error with %s@%s id %s - "
884 "client will retry\n",
885 req->rq_export->exp_obd->obd_name,
886 req->rq_export->exp_client_uuid.uuid,
887 req->rq_export->exp_connection->c_remote_uuid.uuid,
888 libcfs_id2str(req->rq_peer));
894 static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
896 struct ptlrpc_bulk_desc *desc;
897 struct niobuf_remote *remote_nb;
898 struct niobuf_remote *pp_rnb;
899 struct niobuf_local *local_nb;
900 struct obd_ioobj *ioo;
901 struct ost_body *body, *repbody;
902 struct l_wait_info lwi;
903 struct lustre_handle lockh = {0};
904 struct lustre_capa *capa = NULL;
906 int size[3] = { sizeof(struct ptlrpc_body), sizeof(*body) };
907 int objcount, niocount, npages, comms_error = 0;
909 obd_count client_cksum, server_cksum = 0;
913 req->rq_bulk_write = 1;
915 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
916 GOTO(out, rc = -EIO);
918 /* pause before transaction has been started */
919 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK | OBD_FAIL_ONCE,
920 (obd_timeout + 1) / 4);
922 swab = lustre_msg_swabbed(req->rq_reqmsg);
923 body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body),
924 lustre_swab_ost_body);
926 CERROR("Missing/short ost_body\n");
927 GOTO(out, rc = -EFAULT);
930 LASSERT_REQSWAB(req, REQ_REC_OFF + 1);
931 objcount = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1) /
934 CERROR("Missing/short ioobj\n");
935 GOTO(out, rc = -EFAULT);
938 CERROR("too many ioobjs (%d)\n", objcount);
939 GOTO(out, rc = -EFAULT);
942 ioo = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1,
943 objcount * sizeof(*ioo));
944 LASSERT (ioo != NULL);
945 for (niocount = i = 0; i < objcount; i++) {
947 lustre_swab_obd_ioobj(&ioo[i]);
948 if (ioo[i].ioo_bufcnt == 0) {
949 CERROR("ioo[%d] has zero bufcnt\n", i);
950 GOTO(out, rc = -EFAULT);
952 niocount += ioo[i].ioo_bufcnt;
955 if (niocount > PTLRPC_MAX_BRW_PAGES) {
956 DEBUG_REQ(D_ERROR, req, "bulk has too many pages (%d)",
958 GOTO(out, rc = -EFAULT);
961 remote_nb = lustre_swab_reqbuf(req, REQ_REC_OFF + 2,
962 niocount * sizeof(*remote_nb),
963 lustre_swab_niobuf_remote);
964 if (remote_nb == NULL) {
965 CERROR("Missing/short niobuf\n");
966 GOTO(out, rc = -EFAULT);
968 if (swab) { /* swab the remaining niobufs */
969 for (i = 1; i < niocount; i++)
970 lustre_swab_niobuf_remote (&remote_nb[i]);
973 if (body->oa.o_valid & OBD_MD_FLOSSCAPA)
974 capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 3);
976 size[REPLY_REC_OFF + 1] = niocount * sizeof(*rcs);
977 rc = lustre_pack_reply(req, 3, size, NULL);
980 rcs = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1,
981 niocount * sizeof(*rcs));
984 * Per-thread array of struct niobuf_{local,remote}'s was allocated by
987 local_nb = ost_tls(req)->local;
988 pp_rnb = ost_tls(req)->remote;
990 /* FIXME all niobuf splitting should be done in obdfilter if needed */
991 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
992 npages = get_per_page_niobufs(ioo, objcount,remote_nb,niocount,&pp_rnb);
994 GOTO(out, rc = npages);
996 LASSERT(npages <= OST_THREAD_POOL_SIZE);
998 ost_nio_pages_get(req, local_nb, npages);
1000 desc = ptlrpc_prep_bulk_exp(req, npages,
1001 BULK_GET_SINK, OST_BULK_PORTAL);
1003 GOTO(out, rc = -ENOMEM);
1005 rc = ost_brw_lock_get(LCK_PW, req->rq_export, ioo, pp_rnb, &lockh);
1010 * If getting the lock took more time than
1011 * client was willing to wait, drop it. b=11330
1013 if (cfs_time_current_sec() > req->rq_arrival_time.tv_sec + obd_timeout ||
1014 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1016 CERROR("Dropping timed-out write from %s because locking"
1017 "object "LPX64" took %ld seconds.\n",
1018 libcfs_id2str(req->rq_peer), ioo->ioo_id,
1019 cfs_time_current_sec() - req->rq_arrival_time.tv_sec);
1023 ost_prolong_locks(req->rq_export, ioo, pp_rnb, LCK_PW);
1025 /* obd_preprw clobbers oa->valid, so save what we need */
1026 client_cksum = body->oa.o_valid & OBD_MD_FLCKSUM ? body->oa.o_cksum : 0;
1028 /* Because we already sync grant info with client when reconnect,
1029 * grant info will be cleared for resent req, then fed_grant and
1030 * total_grant will not be modified in following preprw_write */
1031 if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
1032 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info\n");
1033 body->oa.o_valid &= ~OBD_MD_FLGRANT;
1036 rc = obd_preprw(OBD_BRW_WRITE, req->rq_export, &body->oa, objcount,
1037 ioo, npages, pp_rnb, local_nb, oti, capa);
1041 /* NB Having prepped, we must commit... */
1043 for (i = 0; i < npages; i++)
1044 ptlrpc_prep_bulk_page(desc, local_nb[i].page,
1045 pp_rnb[i].offset & ~CFS_PAGE_MASK,
1048 /* Check if client was evicted while we were doing i/o before touching
1050 if (desc->bd_export->exp_failed)
1053 rc = ptlrpc_start_bulk_transfer (desc);
1055 lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * HZ / 2, HZ,
1056 ost_bulk_timeout, desc);
1057 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1058 desc->bd_export->exp_failed, &lwi);
1059 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1060 if (rc == -ETIMEDOUT) {
1061 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1062 ptlrpc_abort_bulk(desc);
1063 } else if (desc->bd_export->exp_failed) {
1064 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1066 ptlrpc_abort_bulk(desc);
1067 } else if (!desc->bd_success ||
1068 desc->bd_nob_transferred != desc->bd_nob) {
1069 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1071 "truncated" : "network error on",
1072 desc->bd_nob_transferred, desc->bd_nob);
1073 /* XXX should this be a different errno? */
1077 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1079 comms_error = rc != 0;
1081 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1083 memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
1085 if (unlikely(client_cksum != 0 && rc == 0)) {
1086 static int cksum_counter;
1087 server_cksum = ost_checksum_bulk(desc);
1088 repbody->oa.o_valid |= OBD_MD_FLCKSUM;
1089 repbody->oa.o_cksum = server_cksum;
1091 if (unlikely(client_cksum != server_cksum)) {
1092 CERROR("client csum %x, server csum %x\n",
1093 client_cksum, server_cksum);
1095 } else if ((cksum_counter & (-cksum_counter)) == cksum_counter){
1096 CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
1097 cksum_counter, libcfs_id2str(req->rq_peer),
1102 sptlrpc_svc_unwrap_bulk(req, desc);
1104 /* Must commit after prep above in all cases */
1105 rc = obd_commitrw(OBD_BRW_WRITE, req->rq_export, &repbody->oa,
1106 objcount, ioo, npages, local_nb, oti, rc);
1108 if (unlikely(client_cksum != server_cksum && rc == 0)) {
1109 int new_cksum = ost_checksum_bulk(desc);
1114 if (new_cksum == server_cksum)
1115 msg = "changed in transit before arrival at OST";
1116 else if (new_cksum == client_cksum)
1117 msg = "initial checksum before message complete";
1119 msg = "changed in transit AND after initial checksum";
1121 if (req->rq_peer.nid == desc->bd_sender) {
1125 router = libcfs_nid2str(desc->bd_sender);
1128 LCONSOLE_ERROR_MSG(0x168, "%s: BAD WRITE CHECKSUM: %s from "
1129 "%s%s%s inum "LPU64"/"LPU64" object "
1130 LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
1131 req->rq_export->exp_obd->obd_name, msg,
1132 libcfs_id2str(req->rq_peer),
1134 body->oa.o_valid & OBD_MD_FLFID ?
1135 body->oa.o_fid : (__u64)0,
1136 body->oa.o_valid & OBD_MD_FLFID ?
1137 body->oa.o_generation :(__u64)0,
1139 body->oa.o_valid & OBD_MD_FLGROUP ?
1140 body->oa.o_gr : (__u64)0,
1142 pp_rnb[npages-1].offset+pp_rnb[npages-1].len
1144 CERROR("client csum %x, original server csum %x, "
1145 "server csum now %x\n",
1146 client_cksum, server_cksum, new_cksum);
1149 ost_nio_pages_put(req, local_nb, npages);
1152 /* set per-requested niobuf return codes */
1153 for (i = j = 0; i < niocount; i++) {
1154 int nob = remote_nb[i].len;
1158 LASSERT(j < npages);
1159 if (local_nb[j].rc < 0)
1160 rcs[i] = local_nb[j].rc;
1161 nob -= pp_rnb[j].len;
1166 LASSERT(j == npages);
1170 ost_brw_lock_put(LCK_PW, ioo, pp_rnb, &lockh);
1172 ptlrpc_free_bulk(desc);
1177 oti_to_request(oti, req);
1178 target_committed_to_req(req);
1179 rc = ptlrpc_reply(req);
1180 } else if (!comms_error) {
1181 /* Only reply if there was no comms problem with bulk */
1182 target_committed_to_req(req);
1183 req->rq_status = rc;
1186 if (req->rq_reply_state != NULL) {
1187 /* reply out callback would free */
1188 ptlrpc_rs_decref(req->rq_reply_state);
1189 req->rq_reply_state = NULL;
1191 CWARN("%s: ignoring bulk IO comm error with %s@%s id %s - "
1192 "client will retry\n",
1193 req->rq_export->exp_obd->obd_name,
1194 req->rq_export->exp_client_uuid.uuid,
1195 req->rq_export->exp_connection->c_remote_uuid.uuid,
1196 libcfs_id2str(req->rq_peer));
1201 static int ost_set_info(struct obd_export *exp, struct ptlrpc_request *req)
1203 char *key, *val = NULL;
1204 int keylen, vallen, rc = 0;
1207 key = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, 1);
1209 DEBUG_REQ(D_HA, req, "no set_info key");
1212 keylen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF);
1214 rc = lustre_pack_reply(req, 1, NULL, NULL);
1218 vallen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1);
1220 val = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, 0);
1222 if (KEY_IS("evict_by_nid")) {
1224 obd_export_evict_by_nid(exp->exp_obd, val);
1229 rc = obd_set_info_async(exp, keylen, key, vallen, val, NULL);
1231 lustre_msg_set_status(req->rq_repmsg, 0);
1235 static int ost_get_info(struct obd_export *exp, struct ptlrpc_request *req)
1239 int size[2] = { sizeof(struct ptlrpc_body), sizeof(obd_id) };
1243 key = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, 1);
1245 DEBUG_REQ(D_HA, req, "no get_info key");
1248 keylen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF);
1250 if (keylen < strlen("last_id") || memcmp(key, "last_id", 7) != 0)
1253 rc = lustre_pack_reply(req, 2, size, NULL);
1257 reply = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*reply));
1258 rc = obd_get_info(exp, keylen, key, size, reply);
1259 lustre_msg_set_status(req->rq_repmsg, 0);
1263 static int ost_handle_quotactl(struct ptlrpc_request *req)
1265 struct obd_quotactl *oqctl, *repoqc;
1266 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repoqc) };
1269 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1270 lustre_swab_obd_quotactl);
1272 GOTO(out, rc = -EPROTO);
1274 rc = lustre_pack_reply(req, 2, size, NULL);
1278 repoqc = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repoqc));
1280 req->rq_status = obd_quotactl(req->rq_export, oqctl);
1286 static int ost_handle_quotacheck(struct ptlrpc_request *req)
1288 struct obd_quotactl *oqctl;
1292 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1293 lustre_swab_obd_quotactl);
1297 rc = lustre_pack_reply(req, 1, NULL, NULL);
1299 CERROR("ost: out of memory while packing quotacheck reply\n");
1303 req->rq_status = obd_quotacheck(req->rq_export, oqctl);
1307 static int ost_llog_handle_connect(struct obd_export *exp,
1308 struct ptlrpc_request *req)
1310 struct llogd_conn_body *body;
1314 body = lustre_msg_buf(req->rq_reqmsg, 1, sizeof(*body));
1315 rc = obd_llog_connect(exp, body);
1320 static int ost_filter_recovery_request(struct ptlrpc_request *req,
1321 struct obd_device *obd, int *process)
1323 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1324 case OST_CONNECT: /* This will never get here, but for completeness. */
1325 case OST_DISCONNECT:
1336 case OBD_LOG_CANCEL:
1338 *process = target_queue_recovery_request(req, obd);
1342 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1348 int ost_msg_check_version(struct lustre_msg *msg)
1352 switch(lustre_msg_get_opc(msg)) {
1354 case OST_DISCONNECT:
1357 case SEC_CTX_INIT_CONT:
1359 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
1361 CERROR("bad opc %u version %08x, expecting %08x\n",
1362 lustre_msg_get_opc(msg),
1363 lustre_msg_get_version(msg),
1364 LUSTRE_OBD_VERSION);
1377 case OST_QUOTACHECK:
1379 rc = lustre_msg_check_version(msg, LUSTRE_OST_VERSION);
1381 CERROR("bad opc %u version %08x, expecting %08x\n",
1382 lustre_msg_get_opc(msg),
1383 lustre_msg_get_version(msg),
1384 LUSTRE_OST_VERSION);
1389 case LDLM_BL_CALLBACK:
1390 case LDLM_CP_CALLBACK:
1391 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
1393 CERROR("bad opc %u version %08x, expecting %08x\n",
1394 lustre_msg_get_opc(msg),
1395 lustre_msg_get_version(msg),
1396 LUSTRE_DLM_VERSION);
1398 case LLOG_ORIGIN_CONNECT:
1399 case OBD_LOG_CANCEL:
1400 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
1402 CERROR("bad opc %u version %08x, expecting %08x\n",
1403 lustre_msg_get_opc(msg),
1404 lustre_msg_get_version(msg),
1405 LUSTRE_LOG_VERSION);
1408 CERROR("Unexpected opcode %d\n", lustre_msg_get_opc(msg));
1414 int ost_handle(struct ptlrpc_request *req)
1416 struct obd_trans_info trans_info = { 0, };
1417 struct obd_trans_info *oti = &trans_info;
1418 int should_process, fail = OBD_FAIL_OST_ALL_REPLY_NET, rc = 0;
1419 struct obd_device *obd = NULL;
1422 LASSERT(current->journal_info == NULL);
1424 /* primordial rpcs don't affect server recovery */
1425 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1427 case SEC_CTX_INIT_CONT:
1432 /* XXX identical to MDS */
1433 if (lustre_msg_get_opc(req->rq_reqmsg) != OST_CONNECT) {
1436 if (req->rq_export == NULL) {
1437 CDEBUG(D_HA,"operation %d on unconnected OST from %s\n",
1438 lustre_msg_get_opc(req->rq_reqmsg),
1439 libcfs_id2str(req->rq_peer));
1440 req->rq_status = -ENOTCONN;
1441 GOTO(out, rc = -ENOTCONN);
1444 obd = req->rq_export->exp_obd;
1446 /* Check for aborted recovery. */
1447 spin_lock_bh(&obd->obd_processing_task_lock);
1448 recovering = obd->obd_recovering;
1449 spin_unlock_bh(&obd->obd_processing_task_lock);
1451 rc = ost_filter_recovery_request(req, obd,
1453 if (rc || !should_process)
1455 else if (should_process < 0) {
1456 req->rq_status = should_process;
1457 rc = ptlrpc_error(req);
1465 rc = ost_msg_check_version(req->rq_reqmsg);
1469 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1471 CDEBUG(D_INODE, "connect\n");
1472 OBD_FAIL_RETURN(OBD_FAIL_OST_CONNECT_NET, 0);
1473 rc = target_handle_connect(req);
1475 obd = req->rq_export->exp_obd;
1478 case OST_DISCONNECT:
1479 CDEBUG(D_INODE, "disconnect\n");
1480 OBD_FAIL_RETURN(OBD_FAIL_OST_DISCONNECT_NET, 0);
1481 rc = target_handle_disconnect(req);
1484 CDEBUG(D_INODE, "create\n");
1485 OBD_FAIL_RETURN(OBD_FAIL_OST_CREATE_NET, 0);
1486 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_ENOSPC))
1487 GOTO(out, rc = -ENOSPC);
1488 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_EROFS))
1489 GOTO(out, rc = -EROFS);
1490 rc = ost_create(req->rq_export, req, oti);
1493 CDEBUG(D_INODE, "destroy\n");
1494 OBD_FAIL_RETURN(OBD_FAIL_OST_DESTROY_NET, 0);
1495 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_EROFS))
1496 GOTO(out, rc = -EROFS);
1497 rc = ost_destroy(req->rq_export, req, oti);
1500 CDEBUG(D_INODE, "getattr\n");
1501 OBD_FAIL_RETURN(OBD_FAIL_OST_GETATTR_NET, 0);
1502 rc = ost_getattr(req->rq_export, req);
1505 CDEBUG(D_INODE, "setattr\n");
1506 OBD_FAIL_RETURN(OBD_FAIL_OST_SETATTR_NET, 0);
1507 rc = ost_setattr(req->rq_export, req, oti);
1510 CDEBUG(D_INODE, "write\n");
1511 /* req->rq_request_portal would be nice, if it was set */
1512 if (req->rq_rqbd->rqbd_service->srv_req_portal !=OST_IO_PORTAL){
1513 CERROR("%s: deny write request from %s to portal %u\n",
1514 req->rq_export->exp_obd->obd_name,
1515 obd_export_nid2str(req->rq_export),
1516 req->rq_rqbd->rqbd_service->srv_req_portal);
1517 GOTO(out, rc = -EPROTO);
1519 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
1520 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_ENOSPC))
1521 GOTO(out, rc = -ENOSPC);
1522 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_EROFS))
1523 GOTO(out, rc = -EROFS);
1524 rc = ost_brw_write(req, oti);
1525 LASSERT(current->journal_info == NULL);
1526 /* ost_brw_write sends its own replies */
1529 CDEBUG(D_INODE, "read\n");
1530 /* req->rq_request_portal would be nice, if it was set */
1531 if (req->rq_rqbd->rqbd_service->srv_req_portal !=OST_IO_PORTAL){
1532 CERROR("%s: deny read request from %s to portal %u\n",
1533 req->rq_export->exp_obd->obd_name,
1534 obd_export_nid2str(req->rq_export),
1535 req->rq_rqbd->rqbd_service->srv_req_portal);
1536 GOTO(out, rc = -EPROTO);
1538 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
1539 rc = ost_brw_read(req, oti);
1540 LASSERT(current->journal_info == NULL);
1541 /* ost_brw_read sends its own replies */
1544 CDEBUG(D_INODE, "punch\n");
1545 OBD_FAIL_RETURN(OBD_FAIL_OST_PUNCH_NET, 0);
1546 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_OST_EROFS))
1547 GOTO(out, rc = -EROFS);
1548 rc = ost_punch(req->rq_export, req, oti);
1551 CDEBUG(D_INODE, "statfs\n");
1552 OBD_FAIL_RETURN(OBD_FAIL_OST_STATFS_NET, 0);
1553 rc = ost_statfs(req);
1556 CDEBUG(D_INODE, "sync\n");
1557 OBD_FAIL_RETURN(OBD_FAIL_OST_SYNC_NET, 0);
1558 rc = ost_sync(req->rq_export, req);
1561 DEBUG_REQ(D_INODE, req, "set_info");
1562 rc = ost_set_info(req->rq_export, req);
1565 DEBUG_REQ(D_INODE, req, "get_info");
1566 rc = ost_get_info(req->rq_export, req);
1568 case OST_QUOTACHECK:
1569 CDEBUG(D_INODE, "quotacheck\n");
1570 OBD_FAIL_RETURN(OBD_FAIL_OST_QUOTACHECK_NET, 0);
1571 rc = ost_handle_quotacheck(req);
1574 CDEBUG(D_INODE, "quotactl\n");
1575 OBD_FAIL_RETURN(OBD_FAIL_OST_QUOTACTL_NET, 0);
1576 rc = ost_handle_quotactl(req);
1579 DEBUG_REQ(D_INODE, req, "ping");
1580 rc = target_handle_ping(req);
1582 /* FIXME - just reply status */
1583 case LLOG_ORIGIN_CONNECT:
1584 DEBUG_REQ(D_INODE, req, "log connect");
1585 rc = ost_llog_handle_connect(req->rq_export, req);
1586 req->rq_status = rc;
1587 rc = lustre_pack_reply(req, 1, NULL, NULL);
1590 RETURN(ptlrpc_reply(req));
1591 case OBD_LOG_CANCEL:
1592 CDEBUG(D_INODE, "log cancel\n");
1593 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
1594 rc = llog_origin_handle_cancel(req);
1595 req->rq_status = rc;
1596 rc = lustre_pack_reply(req, 1, NULL, NULL);
1599 RETURN(ptlrpc_reply(req));
1601 CDEBUG(D_INODE, "enqueue\n");
1602 OBD_FAIL_RETURN(OBD_FAIL_LDLM_ENQUEUE, 0);
1603 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
1604 ldlm_server_blocking_ast,
1605 ldlm_server_glimpse_ast);
1606 fail = OBD_FAIL_OST_LDLM_REPLY_NET;
1609 CDEBUG(D_INODE, "convert\n");
1610 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CONVERT, 0);
1611 rc = ldlm_handle_convert(req);
1614 CDEBUG(D_INODE, "cancel\n");
1615 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CANCEL, 0);
1616 rc = ldlm_handle_cancel(req);
1618 case LDLM_BL_CALLBACK:
1619 case LDLM_CP_CALLBACK:
1620 CDEBUG(D_INODE, "callback\n");
1621 CERROR("callbacks should not happen on OST\n");
1624 CERROR("Unexpected opcode %d\n",
1625 lustre_msg_get_opc(req->rq_reqmsg));
1626 req->rq_status = -ENOTSUPP;
1627 rc = ptlrpc_error(req);
1631 LASSERT(current->journal_info == NULL);
1634 /* If we're DISCONNECTing, the export_data is already freed */
1635 if (!rc && lustre_msg_get_opc(req->rq_reqmsg) != OST_DISCONNECT)
1636 target_committed_to_req(req);
1640 oti_to_request(oti, req);
1642 target_send_reply(req, rc, fail);
1645 EXPORT_SYMBOL(ost_handle);
1647 * free per-thread pool created by ost_thread_init().
1649 static void ost_thread_done(struct ptlrpc_thread *thread)
1652 struct ost_thread_local_cache *tls; /* TLS stands for Thread-Local
1657 LASSERT(thread != NULL);
1660 * be prepared to handle partially-initialized pools (because this is
1661 * called from ost_thread_init() for cleanup.
1663 tls = thread->t_data;
1665 for (i = 0; i < OST_THREAD_POOL_SIZE; ++ i) {
1666 if (tls->page[i] != NULL)
1667 __cfs_free_page(tls->page[i]);
1670 thread->t_data = NULL;
1676 * initialize per-thread page pool (bug 5137).
1678 static int ost_thread_init(struct ptlrpc_thread *thread)
1682 struct ost_thread_local_cache *tls;
1686 LASSERT(thread != NULL);
1687 LASSERT(thread->t_data == NULL);
1688 LASSERTF(thread->t_id <= OSS_THREADS_MAX, "%u\n", thread->t_id);
1693 thread->t_data = tls;
1697 for (i = 0; i < OST_THREAD_POOL_SIZE; ++ i) {
1698 tls->page[i] = cfs_alloc_page(OST_THREAD_POOL_GFP);
1699 if (tls->page[i] == NULL) {
1700 ost_thread_done(thread);
1710 #define OST_WATCHDOG_TIMEOUT (obd_timeout * 1000)
1712 /* Sigh - really, this is an OSS, the _server_, not the _target_ */
1713 static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
1715 struct ost_obd *ost = &obd->u.ost;
1716 struct lprocfs_static_vars lvars;
1717 int oss_min_threads;
1718 int oss_max_threads;
1719 int oss_min_create_threads;
1720 int oss_max_create_threads;
1724 rc = cleanup_group_info();
1728 rc = llog_start_commit_thread();
1732 lprocfs_init_vars(ost, &lvars);
1733 lprocfs_obd_setup(obd, lvars.obd_vars);
1735 sema_init(&ost->ost_health_sem, 1);
1737 if (oss_num_threads) {
1738 /* If oss_num_threads is set, it is the min and the max. */
1739 if (oss_num_threads > OSS_THREADS_MAX)
1740 oss_num_threads = OSS_THREADS_MAX;
1741 if (oss_num_threads < OSS_THREADS_MIN)
1742 oss_num_threads = OSS_THREADS_MIN;
1743 oss_max_threads = oss_min_threads = oss_num_threads;
1745 /* Base min threads on memory and cpus */
1746 oss_min_threads = smp_num_cpus * num_physpages >>
1747 (27 - CFS_PAGE_SHIFT);
1748 if (oss_min_threads < OSS_THREADS_MIN)
1749 oss_min_threads = OSS_THREADS_MIN;
1750 /* Insure a 4x range for dynamic threads */
1751 if (oss_min_threads > OSS_THREADS_MAX / 4)
1752 oss_min_threads = OSS_THREADS_MAX / 4;
1753 oss_max_threads = min(OSS_THREADS_MAX, oss_min_threads * 4);
1757 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1758 OST_MAXREPSIZE, OST_REQUEST_PORTAL,
1760 OST_WATCHDOG_TIMEOUT, ost_handle,
1761 LUSTRE_OSS_NAME, obd->obd_proc_entry,
1762 ost_print_req, oss_min_threads,
1763 oss_max_threads, "ll_ost",
1765 if (ost->ost_service == NULL) {
1766 CERROR("failed to start service\n");
1767 GOTO(out_lprocfs, rc = -ENOMEM);
1770 rc = ptlrpc_start_threads(obd, ost->ost_service);
1772 GOTO(out_service, rc = -EINVAL);
1774 if (oss_num_create_threads) {
1775 if (oss_num_create_threads > OSS_MAX_CREATE_THREADS)
1776 oss_num_create_threads = OSS_MAX_CREATE_THREADS;
1777 if (oss_num_create_threads < OSS_DEF_CREATE_THREADS)
1778 oss_num_create_threads = OSS_DEF_CREATE_THREADS;
1779 oss_min_create_threads = oss_max_create_threads =
1780 oss_num_create_threads;
1782 oss_min_create_threads = OSS_DEF_CREATE_THREADS;
1783 oss_max_create_threads = OSS_MAX_CREATE_THREADS;
1786 ost->ost_create_service =
1787 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1788 OST_MAXREPSIZE, OST_CREATE_PORTAL,
1790 OST_WATCHDOG_TIMEOUT, ost_handle, "ost_create",
1791 obd->obd_proc_entry, ost_print_req,
1792 oss_min_create_threads,
1793 oss_max_create_threads,
1794 "ll_ost_creat", LCT_DT_THREAD);
1795 if (ost->ost_create_service == NULL) {
1796 CERROR("failed to start OST create service\n");
1797 GOTO(out_service, rc = -ENOMEM);
1800 rc = ptlrpc_start_threads(obd, ost->ost_create_service);
1802 GOTO(out_create, rc = -EINVAL);
1804 ost->ost_io_service =
1805 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1806 OST_MAXREPSIZE, OST_IO_PORTAL,
1808 OST_WATCHDOG_TIMEOUT, ost_handle, "ost_io",
1809 obd->obd_proc_entry, ost_print_req,
1810 oss_min_threads, oss_max_threads,
1811 "ll_ost_io", LCT_DT_THREAD);
1812 if (ost->ost_io_service == NULL) {
1813 CERROR("failed to start OST I/O service\n");
1814 GOTO(out_create, rc = -ENOMEM);
1817 ost->ost_io_service->srv_init = ost_thread_init;
1818 ost->ost_io_service->srv_done = ost_thread_done;
1819 ost->ost_io_service->srv_cpu_affinity = 1;
1820 rc = ptlrpc_start_threads(obd, ost->ost_io_service);
1822 GOTO(out_io, rc = -EINVAL);
1824 ping_evictor_start();
1829 ptlrpc_unregister_service(ost->ost_io_service);
1830 ost->ost_io_service = NULL;
1832 ptlrpc_unregister_service(ost->ost_create_service);
1833 ost->ost_create_service = NULL;
1835 ptlrpc_unregister_service(ost->ost_service);
1836 ost->ost_service = NULL;
1838 lprocfs_obd_cleanup(obd);
1842 static int ost_cleanup(struct obd_device *obd)
1844 struct ost_obd *ost = &obd->u.ost;
1848 ping_evictor_stop();
1850 spin_lock_bh(&obd->obd_processing_task_lock);
1851 if (obd->obd_recovering) {
1852 target_cancel_recovery_timer(obd);
1853 obd->obd_recovering = 0;
1855 spin_unlock_bh(&obd->obd_processing_task_lock);
1857 down(&ost->ost_health_sem);
1858 ptlrpc_unregister_service(ost->ost_service);
1859 ptlrpc_unregister_service(ost->ost_create_service);
1860 ptlrpc_unregister_service(ost->ost_io_service);
1861 ost->ost_service = NULL;
1862 ost->ost_create_service = NULL;
1863 up(&ost->ost_health_sem);
1865 lprocfs_obd_cleanup(obd);
1870 static int ost_health_check(struct obd_device *obd)
1872 struct ost_obd *ost = &obd->u.ost;
1875 down(&ost->ost_health_sem);
1876 rc |= ptlrpc_service_health_check(ost->ost_service);
1877 rc |= ptlrpc_service_health_check(ost->ost_create_service);
1878 rc |= ptlrpc_service_health_check(ost->ost_io_service);
1879 up(&ost->ost_health_sem);
1882 * health_check to return 0 on healthy
1883 * and 1 on unhealthy.
1891 struct ost_thread_local_cache *ost_tls(struct ptlrpc_request *r)
1893 return (struct ost_thread_local_cache *)(r->rq_svc_thread->t_data);
1896 /* use obd ops to offer management infrastructure */
1897 static struct obd_ops ost_obd_ops = {
1898 .o_owner = THIS_MODULE,
1899 .o_setup = ost_setup,
1900 .o_cleanup = ost_cleanup,
1901 .o_health_check = ost_health_check,
1905 static int __init ost_init(void)
1907 struct lprocfs_static_vars lvars;
1911 lprocfs_init_vars(ost, &lvars);
1912 rc = class_register_type(&ost_obd_ops, NULL, lvars.module_vars,
1913 LUSTRE_OSS_NAME, NULL);
1915 if (ost_num_threads != 0 && oss_num_threads == 0) {
1916 LCONSOLE_INFO("ost_num_threads module parameter is deprecated, "
1917 "use oss_num_threads instead or unset both for "
1918 "dynamic thread startup\n");
1919 oss_num_threads = ost_num_threads;
1925 static void /*__exit*/ ost_exit(void)
1927 class_unregister_type(LUSTRE_OSS_NAME);
1930 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1931 MODULE_DESCRIPTION("Lustre Object Storage Target (OST) v0.01");
1932 MODULE_LICENSE("GPL");
1934 module_init(ost_init);
1935 module_exit(ost_exit);