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 Lustre, http://www.lustre.org.
10 * Lustre is free software; you can redistribute it and/or
11 * modify it under the terms of version 2 of the GNU General Public
12 * License as published by the Free Software Foundation.
14 * Lustre is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Lustre; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * Storage Target Handling functions
24 * Lustre Object Server Module (OST)
26 * This server is single threaded at present (but can easily be multi
27 * threaded). For testing and management it is treated as an
28 * obd_device, although it does not export a full OBD method table
29 * (the requests are coming in over the wire, so object target
30 * modules do not have a full method table.)
34 # define EXPORT_SYMTAB
36 #define DEBUG_SUBSYSTEM S_OST
38 #include <linux/module.h>
39 #include <linux/obd_ost.h>
40 #include <linux/lustre_net.h>
41 #include <linux/lustre_dlm.h>
42 #include <linux/lustre_export.h>
43 #include <linux/init.h>
44 #include <linux/lprocfs_status.h>
45 #include <linux/lustre_commit_confd.h>
46 #include <portals/list.h>
48 void oti_init(struct obd_trans_info *oti, struct ptlrpc_request *req)
52 memset(oti, 0, sizeof *oti);
54 if (req->rq_repmsg && req->rq_reqmsg != 0)
55 oti->oti_transno = req->rq_repmsg->transno;
58 void oti_to_request(struct obd_trans_info *oti, struct ptlrpc_request *req)
60 struct oti_req_ack_lock *ack_lock;
67 req->rq_repmsg->transno = oti->oti_transno;
69 /* XXX 4 == entries in oti_ack_locks??? */
70 for (ack_lock = oti->oti_ack_locks, i = 0; i < 4; i++, ack_lock++) {
73 /* XXX not even calling target_send_reply in some cases... */
74 ptlrpc_save_lock (req, &ack_lock->lock, ack_lock->mode);
78 static int ost_destroy(struct obd_export *exp, struct ptlrpc_request *req,
79 struct obd_trans_info *oti)
81 struct ost_body *body, *repbody;
82 int rc, size = sizeof(*body);
85 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
89 rc = lustre_pack_reply(req, 1, &size, NULL);
93 if (body->oa.o_valid & OBD_MD_FLCOOKIE)
94 oti->oti_logcookies = obdo_logcookie(&body->oa);
95 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
96 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
97 req->rq_status = obd_destroy(exp, &body->oa, NULL, oti);
101 static int ost_getattr(struct obd_export *exp, struct ptlrpc_request *req)
103 struct ost_body *body, *repbody;
104 int rc, size = sizeof(*body);
107 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
111 rc = lustre_pack_reply(req, 1, &size, NULL);
115 repbody = lustre_msg_buf (req->rq_repmsg, 0, sizeof(*repbody));
116 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
117 req->rq_status = obd_getattr(exp, &repbody->oa, NULL);
121 static int ost_statfs(struct ptlrpc_request *req)
123 struct obd_statfs *osfs;
124 int rc, size = sizeof(*osfs);
127 rc = lustre_pack_reply(req, 1, &size, NULL);
131 osfs = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*osfs));
133 req->rq_status = obd_statfs(req->rq_export->exp_obd, osfs, jiffies-HZ);
134 if (req->rq_status != 0)
135 CERROR("ost: statfs failed: rc %d\n", req->rq_status);
140 static int ost_create(struct obd_export *exp, struct ptlrpc_request *req,
141 struct obd_trans_info *oti)
143 struct ost_body *body, *repbody;
144 int rc, size = sizeof(*repbody);
147 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
151 rc = lustre_pack_reply(req, 1, &size, NULL);
155 repbody = lustre_msg_buf (req->rq_repmsg, 0, sizeof(*repbody));
156 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
157 oti->oti_logcookies = obdo_logcookie(&repbody->oa);
158 req->rq_status = obd_create(exp, &repbody->oa, NULL, oti);
159 //obd_log_cancel(conn, NULL, 1, oti->oti_logcookies, 0);
163 static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
164 struct obd_trans_info *oti)
166 struct ost_body *body, *repbody;
167 int rc, size = sizeof(*repbody);
170 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
174 if ((body->oa.o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
175 (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
178 rc = lustre_pack_reply(req, 1, &size, NULL);
182 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
183 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
184 req->rq_status = obd_punch(exp, &repbody->oa, NULL, repbody->oa.o_size,
185 repbody->oa.o_blocks, oti);
189 static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req)
191 struct ost_body *body, *repbody;
192 int rc, size = sizeof(*repbody);
195 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
199 rc = lustre_pack_reply(req, 1, &size, NULL);
203 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
204 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
205 req->rq_status = obd_sync(exp, &repbody->oa, NULL, repbody->oa.o_size,
206 repbody->oa.o_blocks);
210 static int ost_setattr(struct obd_export *exp, struct ptlrpc_request *req,
211 struct obd_trans_info *oti)
213 struct ost_body *body, *repbody;
214 int rc, size = sizeof(*repbody);
217 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
221 rc = lustre_pack_reply(req, 1, &size, NULL);
225 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
226 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
228 req->rq_status = obd_setattr(exp, &repbody->oa, NULL, oti);
232 static int ost_bulk_timeout(void *data)
235 /* We don't fail the connection here, because having the export
236 * killed makes the (vital) call to commitrw very sad.
241 static int get_per_page_niobufs(struct obd_ioobj *ioo, int nioo,
242 struct niobuf_remote *rnb, int nrnb,
243 struct niobuf_remote **pp_rnbp)
245 /* Copy a remote niobuf, splitting it into page-sized chunks
246 * and setting ioo[i].ioo_bufcnt accordingly */
247 struct niobuf_remote *pp_rnb;
254 /* first count and check the number of pages required */
255 for (i = 0; i < nioo; i++)
256 for (j = 0; j < ioo->ioo_bufcnt; j++, rnbidx++) {
257 obd_off offset = rnb[rnbidx].offset;
258 obd_off p0 = offset >> PAGE_SHIFT;
259 obd_off pn = (offset + rnb[rnbidx].len - 1)>>PAGE_SHIFT;
261 LASSERT(rnbidx < nrnb);
263 npages += (pn + 1 - p0);
265 if (rnb[rnbidx].len == 0) {
266 CERROR("zero len BRW: obj %d objid "LPX64
267 " buf %u\n", i, ioo[i].ioo_id, j);
271 rnb[rnbidx].offset <= rnb[rnbidx-1].offset) {
272 CERROR("unordered BRW: obj %d objid "LPX64
273 " buf %u offset "LPX64" <= "LPX64"\n",
274 i, ioo[i].ioo_id, j, rnb[rnbidx].offset,
280 LASSERT(rnbidx == nrnb);
282 if (npages == nrnb) { /* all niobufs are for single pages */
287 OBD_ALLOC(pp_rnb, sizeof(*pp_rnb) * npages);
291 /* now do the actual split */
293 for (i = 0; i < nioo; i++) {
296 for (j = 0; j < ioo[i].ioo_bufcnt; j++, rnbidx++) {
297 obd_off off = rnb[rnbidx].offset;
298 int nob = rnb[rnbidx].len;
300 LASSERT(rnbidx < nrnb);
302 obd_off poff = off & (PAGE_SIZE - 1);
303 int pnob = (poff + nob > PAGE_SIZE) ?
304 PAGE_SIZE - poff : nob;
306 LASSERT(page < npages);
307 pp_rnb[page].len = pnob;
308 pp_rnb[page].offset = off;
309 pp_rnb[page].flags = rnb[rnbidx].flags;
311 CDEBUG(0, " obj %d id "LPX64
312 "page %d(%d) "LPX64" for %d, flg %x\n",
313 i, ioo[i].ioo_id, obj_pages, page,
314 pp_rnb[page].offset, pp_rnb[page].len,
324 ioo[i].ioo_bufcnt = obj_pages;
326 LASSERT(page == npages);
332 static void free_per_page_niobufs (int npages, struct niobuf_remote *pp_rnb,
333 struct niobuf_remote *rnb)
335 if (pp_rnb == rnb) /* didn't allocate above */
338 OBD_FREE(pp_rnb, sizeof(*pp_rnb) * npages);
342 obd_count ost_checksum_bulk(struct ptlrpc_bulk_desc *desc)
345 struct ptlrpc_bulk_page *bp;
347 list_for_each_entry(bp, &desc->bd_page_list, bp_link) {
348 ost_checksum(&cksum, kmap(bp->bp_page) + bp->bp_pageoffset,
357 static int ost_brw_read(struct ptlrpc_request *req)
359 struct ptlrpc_bulk_desc *desc;
360 struct niobuf_remote *remote_nb;
361 struct niobuf_remote *pp_rnb;
362 struct niobuf_local *local_nb;
363 struct obd_ioobj *ioo;
364 struct ost_body *body, *repbody;
365 struct l_wait_info lwi;
366 struct obd_trans_info oti = { 0 };
367 char str[PTL_NALFMT_SIZE];
368 int size[1] = { sizeof(*body) };
377 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
378 GOTO(out, rc = -EIO);
380 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK | OBD_FAIL_ONCE,
381 (obd_timeout + 1) / 4);
383 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
385 CERROR("Missing/short ost_body\n");
386 GOTO(out, rc = -EFAULT);
389 ioo = lustre_swab_reqbuf(req, 1, sizeof(*ioo), lustre_swab_obd_ioobj);
391 CERROR("Missing/short ioobj\n");
392 GOTO(out, rc = -EFAULT);
395 niocount = ioo->ioo_bufcnt;
396 remote_nb = lustre_swab_reqbuf(req, 2, niocount * sizeof(*remote_nb),
397 lustre_swab_niobuf_remote);
398 if (remote_nb == NULL) {
399 CERROR("Missing/short niobuf\n");
400 GOTO(out, rc = -EFAULT);
402 if (lustre_msg_swabbed(req->rq_reqmsg)) { /* swab remaining niobufs */
403 for (i = 1; i < niocount; i++)
404 lustre_swab_niobuf_remote (&remote_nb[i]);
407 rc = lustre_pack_reply(req, 1, size, NULL);
411 /* FIXME all niobuf splitting should be done in obdfilter if needed */
412 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
413 npages = get_per_page_niobufs(ioo, 1, remote_nb, niocount, &pp_rnb);
415 GOTO(out, rc = npages);
417 OBD_ALLOC(local_nb, sizeof(*local_nb) * npages);
418 if (local_nb == NULL)
419 GOTO(out_pp_rnb, rc = -ENOMEM);
421 desc = ptlrpc_prep_bulk_exp (req, npages,
422 BULK_PUT_SOURCE, OST_BULK_PORTAL);
424 GOTO(out_local, rc = -ENOMEM);
426 rc = obd_preprw(OBD_BRW_READ, req->rq_export, &body->oa, 1,
427 ioo, npages, pp_rnb, local_nb, &oti);
432 for (i = 0; i < npages; i++) {
433 int page_rc = local_nb[i].rc;
435 if (page_rc < 0) { /* error */
440 LASSERT(page_rc <= pp_rnb[i].len);
442 if (page_rc != 0) { /* some data! */
443 LASSERT (local_nb[i].page != NULL);
444 ptlrpc_prep_bulk_page(desc, local_nb[i].page,
445 pp_rnb[i].offset & (PAGE_SIZE-1),
449 if (page_rc != pp_rnb[i].len) { /* short read */
450 /* All subsequent pages should be 0 */
452 LASSERT(local_nb[i].rc == 0);
458 rc = ptlrpc_start_bulk_transfer(desc);
460 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4,
461 ost_bulk_timeout, desc);
462 rc = l_wait_event(desc->bd_waitq,
463 !ptlrpc_bulk_active(desc), &lwi);
464 LASSERT(rc == 0 || rc == -ETIMEDOUT);
465 if (rc == -ETIMEDOUT) {
466 DEBUG_REQ(D_ERROR, req, "timeout on bulk PUT");
467 ptlrpc_abort_bulk(desc);
468 } else if (!desc->bd_success ||
469 desc->bd_nob_transferred != desc->bd_nob) {
470 DEBUG_REQ(D_ERROR, req, "%s bulk PUT %d(%d)",
472 "truncated" : "network error on",
473 desc->bd_nob_transferred,
475 /* XXX should this be a different errno? */
479 DEBUG_REQ(D_ERROR, req, "bulk PUT failed: rc %d\n", rc);
481 comms_error = rc != 0;
484 /* Must commit after prep above in all cases */
485 rc = obd_commitrw(OBD_BRW_READ, req->rq_export, &body->oa, 1,
486 ioo, npages, local_nb, &oti, rc);
489 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
490 memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
493 repbody->oa.o_cksum = ost_checksum_bulk(desc);
494 repbody->oa.o_valid |= OBD_MD_FLCKSUM;
499 ptlrpc_free_bulk(desc);
501 OBD_FREE(local_nb, sizeof(*local_nb) * npages);
503 free_per_page_niobufs(npages, pp_rnb, remote_nb);
507 req->rq_status = nob;
509 } else if (!comms_error) {
510 /* only reply if comms OK */
514 if (req->rq_reply_state != NULL) {
515 /* reply out callback would free */
516 lustre_free_reply_state (req->rq_reply_state);
518 if (req->rq_reqmsg->conn_cnt == req->rq_export->exp_conn_cnt) {
519 CERROR("bulk IO comms error: "
520 "evicting %s@%s nid %s\n",
521 req->rq_export->exp_client_uuid.uuid,
522 req->rq_export->exp_connection->c_remote_uuid.uuid,
523 ptlrpc_peernid2str(&req->rq_peer, str));
524 ptlrpc_fail_export(req->rq_export);
526 CERROR("ignoring bulk IO comms error: "
527 "client reconnected %s@%s nid %s\n",
528 req->rq_export->exp_client_uuid.uuid,
529 req->rq_export->exp_connection->c_remote_uuid.uuid,
530 ptlrpc_peernid2str(&req->rq_peer, str));
537 int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
539 struct ptlrpc_bulk_desc *desc;
540 struct niobuf_remote *remote_nb;
541 struct niobuf_remote *pp_rnb;
542 struct niobuf_local *local_nb;
543 struct obd_ioobj *ioo;
544 struct ost_body *body, *repbody;
545 struct l_wait_info lwi;
547 int size[2] = { sizeof(*body) };
548 int objcount, niocount, npages;
551 char str[PTL_NALFMT_SIZE];
554 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
555 GOTO(out, rc = -EIO);
557 /* pause before transaction has been started */
558 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK | OBD_FAIL_ONCE,
559 (obd_timeout + 1) / 4);
561 swab = lustre_msg_swabbed(req->rq_reqmsg);
562 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
564 CERROR("Missing/short ost_body\n");
565 GOTO(out, rc = -EFAULT);
568 LASSERT_REQSWAB(req, 1);
569 objcount = req->rq_reqmsg->buflens[1] / sizeof(*ioo);
571 CERROR("Missing/short ioobj\n");
572 GOTO(out, rc = -EFAULT);
574 ioo = lustre_msg_buf (req->rq_reqmsg, 1, objcount * sizeof(*ioo));
575 LASSERT (ioo != NULL);
576 for (niocount = i = 0; i < objcount; i++) {
578 lustre_swab_obd_ioobj (&ioo[i]);
579 if (ioo[i].ioo_bufcnt == 0) {
580 CERROR("ioo[%d] has zero bufcnt\n", i);
581 GOTO(out, rc = -EFAULT);
583 niocount += ioo[i].ioo_bufcnt;
586 remote_nb = lustre_swab_reqbuf(req, 2, niocount * sizeof(*remote_nb),
587 lustre_swab_niobuf_remote);
588 if (remote_nb == NULL) {
589 CERROR("Missing/short niobuf\n");
590 GOTO(out, rc = -EFAULT);
592 if (swab) { /* swab the remaining niobufs */
593 for (i = 1; i < niocount; i++)
594 lustre_swab_niobuf_remote (&remote_nb[i]);
597 size[1] = niocount * sizeof(*rcs);
598 rc = lustre_pack_reply(req, 2, size, NULL);
601 rcs = lustre_msg_buf(req->rq_repmsg, 1, niocount * sizeof(*rcs));
603 /* Do snap options here*/
604 rc = obd_do_cow(req->rq_export, ioo, objcount, remote_nb);
608 /* FIXME all niobuf splitting should be done in obdfilter if needed */
609 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
610 npages = get_per_page_niobufs(ioo, objcount,remote_nb,niocount,&pp_rnb);
612 GOTO(out, rc = npages);
614 OBD_ALLOC(local_nb, sizeof(*local_nb) * npages);
615 if (local_nb == NULL)
616 GOTO(out_pp_rnb, rc = -ENOMEM);
618 desc = ptlrpc_prep_bulk_exp (req, npages,
619 BULK_GET_SINK, OST_BULK_PORTAL);
621 GOTO(out_local, rc = -ENOMEM);
623 rc = obd_preprw(OBD_BRW_WRITE, req->rq_export, &body->oa, objcount,
624 ioo, npages, pp_rnb, local_nb, oti);
628 /* NB Having prepped, we must commit... */
630 for (i = 0; i < npages; i++)
631 ptlrpc_prep_bulk_page(desc, local_nb[i].page,
632 pp_rnb[i].offset & (PAGE_SIZE - 1),
635 rc = ptlrpc_start_bulk_transfer (desc);
637 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4,
638 ost_bulk_timeout, desc);
639 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc),
641 LASSERT(rc == 0 || rc == -ETIMEDOUT);
642 if (rc == -ETIMEDOUT) {
643 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
644 ptlrpc_abort_bulk(desc);
645 } else if (!desc->bd_success ||
646 desc->bd_nob_transferred != desc->bd_nob) {
647 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
649 "truncated" : "network error on",
650 desc->bd_nob_transferred, desc->bd_nob);
651 /* XXX should this be a different errno? */
655 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d\n", rc);
657 comms_error = rc != 0;
659 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
660 memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
663 if (rc == 0 && (body->oa.o_valid & OBD_MD_FLCKSUM) != 0) {
664 static int cksum_counter;
665 obd_count client_cksum = body->oa.o_cksum;
666 obd_count cksum = ost_checksum_bulk(desc);
668 ptlrpc_peernid2str(&req->rq_connection->c_peer, str);
669 if (client_cksum != cksum) {
670 CERROR("Bad checksum: client %x, server %x, client NID "
671 LPX64" (%s)\n", client_cksum, cksum,
672 req->rq_connection->c_peer.peer_id.nid, str);
674 repbody->oa.o_cksum = cksum;
677 if ((cksum_counter & (-cksum_counter)) == cksum_counter)
678 CWARN("Checksum %u from "LPX64": %x OK\n",
680 req->rq_connection->c_peer.peer_id.nid,
685 /* Must commit after prep above in all cases */
686 rc = obd_commitrw(OBD_BRW_WRITE, req->rq_export, &repbody->oa,
687 objcount, ioo, npages, local_nb, oti, rc);
690 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
691 memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
694 repbody->oa.o_cksum = ost_checksum_bulk(desc);
695 repbody->oa.o_valid |= OBD_MD_FLCKSUM;
697 /* set per-requested niobuf return codes */
698 for (i = j = 0; i < niocount; i++) {
699 int nob = remote_nb[i].len;
704 if (local_nb[j].rc < 0)
705 rcs[i] = local_nb[j].rc;
706 nob -= pp_rnb[j].len;
711 LASSERT(j == npages);
713 rc = obd_write_extents(req->rq_export, ioo, objcount, niocount,
716 CERROR("write extents error of id "LPU64" rc=%d\n",
720 ptlrpc_free_bulk(desc);
722 OBD_FREE(local_nb, sizeof(*local_nb) * npages);
724 free_per_page_niobufs(npages, pp_rnb, remote_nb);
727 oti_to_request(oti, req);
728 rc = ptlrpc_reply(req);
729 } else if (!comms_error) {
730 /* Only reply if there was no comms problem with bulk */
734 if (req->rq_reply_state != NULL) {
735 /* reply out callback would free */
736 lustre_free_reply_state (req->rq_reply_state);
738 if (req->rq_reqmsg->conn_cnt == req->rq_export->exp_conn_cnt) {
739 CERROR("bulk IO comms error: "
740 "evicting %s@%s nid %s\n",
741 req->rq_export->exp_client_uuid.uuid,
742 req->rq_export->exp_connection->c_remote_uuid.uuid,
743 ptlrpc_peernid2str(&req->rq_peer, str));
744 ptlrpc_fail_export(req->rq_export);
746 CERROR("ignoring bulk IO comms error: "
747 "client reconnected %s@%s nid %s\n",
748 req->rq_export->exp_client_uuid.uuid,
749 req->rq_export->exp_connection->c_remote_uuid.uuid,
750 ptlrpc_peernid2str(&req->rq_peer, str));
755 EXPORT_SYMBOL(ost_brw_write);
757 static int ost_san_brw(struct ptlrpc_request *req, int cmd)
759 struct niobuf_remote *remote_nb, *res_nb, *pp_rnb;
760 struct obd_ioobj *ioo;
761 struct ost_body *body, *repbody;
762 int rc, i, objcount, niocount, size[2] = {sizeof(*body)}, npages;
766 /* XXX not set to use latest protocol */
768 swab = lustre_msg_swabbed(req->rq_reqmsg);
769 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
771 CERROR("Missing/short ost_body\n");
772 GOTO(out, rc = -EFAULT);
775 ioo = lustre_swab_reqbuf(req, 1, sizeof(*ioo), lustre_swab_obd_ioobj);
777 CERROR("Missing/short ioobj\n");
778 GOTO(out, rc = -EFAULT);
780 objcount = req->rq_reqmsg->buflens[1] / sizeof(*ioo);
781 niocount = ioo[0].ioo_bufcnt;
782 for (i = 1; i < objcount; i++) {
784 lustre_swab_obd_ioobj (&ioo[i]);
785 niocount += ioo[i].ioo_bufcnt;
788 remote_nb = lustre_swab_reqbuf(req, 2, niocount * sizeof(*remote_nb),
789 lustre_swab_niobuf_remote);
790 if (remote_nb == NULL) {
791 CERROR("Missing/short niobuf\n");
792 GOTO(out, rc = -EFAULT);
794 if (swab) { /* swab the remaining niobufs */
795 for (i = 1; i < niocount; i++)
796 lustre_swab_niobuf_remote (&remote_nb[i]);
799 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
800 npages = get_per_page_niobufs(ioo, objcount,remote_nb,niocount,&pp_rnb);
802 GOTO (out, rc = npages);
804 size[1] = npages * sizeof(*pp_rnb);
805 rc = lustre_pack_reply(req, 2, size, NULL);
807 GOTO(out_pp_rnb, rc);
809 req->rq_status = obd_san_preprw(cmd, req->rq_export, &body->oa,
810 objcount, ioo, npages, pp_rnb);
813 GOTO(out_pp_rnb, rc = 0);
815 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
816 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
818 res_nb = lustre_msg_buf(req->rq_repmsg, 1, size[1]);
819 memcpy(res_nb, remote_nb, size[1]);
822 free_per_page_niobufs(npages, pp_rnb, remote_nb);
833 static int ost_set_info(struct obd_export *exp, struct ptlrpc_request *req)
839 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
841 DEBUG_REQ(D_HA, req, "no set_info key");
844 keylen = req->rq_reqmsg->buflens[0];
846 rc = lustre_pack_reply(req, 0, NULL, NULL);
850 val = lustre_msg_buf(req->rq_reqmsg, 1, 0);
852 rc = obd_set_info(exp, keylen, key, req->rq_reqmsg->buflens[1], val);
853 req->rq_repmsg->status = 0;
857 static int ost_get_info(struct obd_export *exp, struct ptlrpc_request *req)
860 int keylen, rc = 0, size = sizeof(obd_id);
864 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
866 DEBUG_REQ(D_HA, req, "no get_info key");
869 keylen = req->rq_reqmsg->buflens[0];
871 if (keylen < strlen("last_id") || memcmp(key, "last_id", 7) != 0)
874 rc = lustre_pack_reply(req, 1, &size, NULL);
878 reply = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*reply));
879 rc = obd_get_info(exp, keylen, key, &size, reply);
880 req->rq_repmsg->status = 0;
884 static int ost_llog_handle_connect(struct obd_export *exp,
885 struct ptlrpc_request *req)
887 struct llogd_conn_body *body;
891 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*body));
892 rc = obd_llog_connect(exp, body);
896 static int ost_filter_recovery_request(struct ptlrpc_request *req,
897 struct obd_device *obd, int *process)
899 switch (req->rq_reqmsg->opc) {
900 case OST_CONNECT: /* This will never get here, but for completeness. */
914 *process = target_queue_recovery_request(req, obd);
918 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
920 /* XXX what should we set rq_status to here? */
921 req->rq_status = -EAGAIN;
922 RETURN(ptlrpc_error(req));
926 int ost_msg_check_version(struct lustre_msg *msg)
934 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
936 CERROR("bad opc %u version %08x, expecting %08x\n",
937 msg->opc, msg->version, LUSTRE_OBD_VERSION);
952 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
954 CERROR("bad opc %u version %08x, expecting %08x\n",
955 msg->opc, msg->version, LUSTRE_OST_VERSION);
960 case LDLM_BL_CALLBACK:
961 case LDLM_CP_CALLBACK:
962 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
964 CERROR("bad opc %u version %08x, expecting %08x\n",
965 msg->opc, msg->version, LUSTRE_DLM_VERSION);
968 case LLOG_ORIGIN_CONNECT:
969 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
971 CERROR("bad opc %u version %08x, expecting %08x\n",
972 msg->opc, msg->version, LUSTRE_LOG_VERSION);
975 CERROR("OST unexpected opcode %d\n", msg->opc);
982 int ost_handle(struct ptlrpc_request *req)
984 struct obd_trans_info trans_info = { 0, };
985 struct obd_trans_info *oti = &trans_info;
986 int should_process, fail = OBD_FAIL_OST_ALL_REPLY_NET, rc = 0;
987 struct obd_export *exp = NULL;
990 LASSERT(current->journal_info == NULL);
992 rc = ost_msg_check_version(req->rq_reqmsg);
994 CERROR("OST drop mal-formed request\n");
998 /* XXX identical to MDS */
999 if (req->rq_reqmsg->opc != OST_CONNECT) {
1000 struct obd_device *obd;
1003 exp = req->rq_export;
1006 CDEBUG(D_HA, "operation %d on unconnected OST\n",
1007 req->rq_reqmsg->opc);
1008 req->rq_status = -ENOTCONN;
1009 GOTO(out, rc = -ENOTCONN);
1014 /* Check for aborted recovery. */
1015 spin_lock_bh(&obd->obd_processing_task_lock);
1016 recovering = obd->obd_recovering;
1017 spin_unlock_bh(&obd->obd_processing_task_lock);
1019 rc = ost_filter_recovery_request(req, obd,
1021 if (rc || !should_process)
1023 if (should_process < 0) {
1024 req->rq_status = should_process;
1025 rc = ptlrpc_error(req);
1033 switch (req->rq_reqmsg->opc) {
1035 CDEBUG(D_INODE, "connect\n");
1036 OBD_FAIL_RETURN(OBD_FAIL_OST_CONNECT_NET, 0);
1037 rc = target_handle_connect(req);
1040 case OST_DISCONNECT:
1041 CDEBUG(D_INODE, "disconnect\n");
1042 OBD_FAIL_RETURN(OBD_FAIL_OST_DISCONNECT_NET, 0);
1043 rc = target_handle_disconnect(req);
1046 CDEBUG(D_INODE, "create\n");
1047 OBD_FAIL_RETURN(OBD_FAIL_OST_CREATE_NET, 0);
1048 rc = ost_create(exp, req, oti);
1051 CDEBUG(D_INODE, "destroy\n");
1052 OBD_FAIL_RETURN(OBD_FAIL_OST_DESTROY_NET, 0);
1053 rc = ost_destroy(exp, req, oti);
1056 CDEBUG(D_INODE, "getattr\n");
1057 OBD_FAIL_RETURN(OBD_FAIL_OST_GETATTR_NET, 0);
1058 rc = ost_getattr(exp, req);
1061 CDEBUG(D_INODE, "setattr\n");
1062 OBD_FAIL_RETURN(OBD_FAIL_OST_SETATTR_NET, 0);
1063 rc = ost_setattr(exp, req, oti);
1066 CDEBUG(D_INODE, "write\n");
1067 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
1068 rc = ost_brw_write(req, oti);
1069 LASSERT(current->journal_info == NULL);
1070 /* ost_brw sends its own replies */
1073 CDEBUG(D_INODE, "read\n");
1074 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
1075 rc = ost_brw_read(req);
1076 LASSERT(current->journal_info == NULL);
1077 /* ost_brw sends its own replies */
1080 CDEBUG(D_INODE, "san read\n");
1081 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
1082 rc = ost_san_brw(req, OBD_BRW_READ);
1083 /* ost_san_brw sends its own replies */
1086 CDEBUG(D_INODE, "san write\n");
1087 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
1088 rc = ost_san_brw(req, OBD_BRW_WRITE);
1089 /* ost_san_brw sends its own replies */
1092 CDEBUG(D_INODE, "punch\n");
1093 OBD_FAIL_RETURN(OBD_FAIL_OST_PUNCH_NET, 0);
1094 rc = ost_punch(exp, req, oti);
1097 CDEBUG(D_INODE, "statfs\n");
1098 OBD_FAIL_RETURN(OBD_FAIL_OST_STATFS_NET, 0);
1099 rc = ost_statfs(req);
1102 CDEBUG(D_INODE, "sync\n");
1103 OBD_FAIL_RETURN(OBD_FAIL_OST_SYNC_NET, 0);
1104 rc = ost_sync(exp, req);
1107 DEBUG_REQ(D_INODE, req, "set_info");
1108 rc = ost_set_info(exp, req);
1111 DEBUG_REQ(D_INODE, req, "get_info");
1112 rc = ost_get_info(exp, req);
1115 DEBUG_REQ(D_INODE, req, "ping");
1116 rc = target_handle_ping(req);
1118 /* FIXME - just reply status */
1119 case LLOG_ORIGIN_CONNECT:
1120 DEBUG_REQ(D_INODE, req, "log connect\n");
1121 rc = ost_llog_handle_connect(exp, req);
1122 req->rq_status = rc;
1123 rc = lustre_pack_reply(req, 0, NULL, NULL);
1126 RETURN(ptlrpc_reply(req));
1127 case OBD_LOG_CANCEL:
1128 CDEBUG(D_INODE, "log cancel\n");
1129 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
1130 rc = llog_origin_handle_cancel(req);
1131 req->rq_status = rc;
1132 rc = lustre_pack_reply(req, 0, NULL, NULL);
1135 RETURN(ptlrpc_reply(req));
1137 CDEBUG(D_INODE, "enqueue\n");
1138 OBD_FAIL_RETURN(OBD_FAIL_LDLM_ENQUEUE, 0);
1139 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
1140 ldlm_server_blocking_ast,
1141 ldlm_server_glimpse_ast);
1142 fail = OBD_FAIL_OST_LDLM_REPLY_NET;
1145 CDEBUG(D_INODE, "convert\n");
1146 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CONVERT, 0);
1147 rc = ldlm_handle_convert(req);
1150 CDEBUG(D_INODE, "cancel\n");
1151 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CANCEL, 0);
1152 rc = ldlm_handle_cancel(req);
1154 case LDLM_BL_CALLBACK:
1155 case LDLM_CP_CALLBACK:
1156 CDEBUG(D_INODE, "callback\n");
1157 CERROR("callbacks should not happen on OST\n");
1160 CERROR("Unexpected opcode %d\n", req->rq_reqmsg->opc);
1161 req->rq_status = -ENOTSUPP;
1162 rc = ptlrpc_error(req);
1166 LASSERT(current->journal_info == NULL);
1169 /* If we're DISCONNECTing, the export_data is already freed */
1170 if (!rc && req->rq_reqmsg->opc != OST_DISCONNECT) {
1171 struct obd_device *obd = req->rq_export->exp_obd;
1172 if (!obd->obd_no_transno) {
1173 req->rq_repmsg->last_committed =
1174 obd->obd_last_committed;
1176 DEBUG_REQ(D_IOCTL, req,
1177 "not sending last_committed update");
1179 CDEBUG(D_INFO, "last_committed "LPU64", xid "LPX64"\n",
1180 obd->obd_last_committed, req->rq_xid);
1184 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LAST_REPLAY) {
1185 struct obd_device *obd = req->rq_export->exp_obd;
1187 if (obd && obd->obd_recovering) {
1188 DEBUG_REQ(D_HA, req, "LAST_REPLAY, queuing reply");
1189 return target_queue_final_reply(req, rc);
1191 /* Lost a race with recovery; let the error path DTRT. */
1192 rc = req->rq_status = -ENOTCONN;
1196 oti_to_request(oti, req);
1198 target_send_reply(req, rc, fail);
1201 EXPORT_SYMBOL(ost_handle);
1203 int ost_attach(struct obd_device *dev, obd_count len, void *data)
1205 struct lprocfs_static_vars lvars;
1207 lprocfs_init_vars(ost,&lvars);
1208 return lprocfs_obd_attach(dev, lvars.obd_vars);
1211 int ost_detach(struct obd_device *dev)
1213 return lprocfs_obd_detach(dev);
1216 static int ost_setup(struct obd_device *obd, obd_count len, void *buf)
1218 struct ost_obd *ost = &obd->u.ost;
1222 rc = cleanup_group_info();
1226 rc = llog_start_commit_thread();
1231 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1232 OST_REQUEST_PORTAL, OSC_REPLY_PORTAL,
1234 obd->obd_proc_entry);
1235 if (ost->ost_service == NULL) {
1236 CERROR("failed to start service\n");
1240 rc = ptlrpc_start_n_threads(obd, ost->ost_service, OST_NUM_THREADS,
1243 GOTO(out_service, rc = -EINVAL);
1245 ost->ost_create_service =
1246 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1247 OST_CREATE_PORTAL, OSC_REPLY_PORTAL,
1248 ost_handle, "ost_create",
1249 obd->obd_proc_entry);
1250 if (ost->ost_create_service == NULL) {
1251 CERROR("failed to start OST create service\n");
1252 GOTO(out_service, rc = -ENOMEM);
1255 rc = ptlrpc_start_n_threads(obd, ost->ost_create_service, 1,
1258 GOTO(out_create, rc = -EINVAL);
1263 ptlrpc_unregister_service(ost->ost_create_service);
1265 ptlrpc_unregister_service(ost->ost_service);
1269 static int ost_cleanup(struct obd_device *obd, int flags)
1271 struct ost_obd *ost = &obd->u.ost;
1275 spin_lock_bh(&obd->obd_processing_task_lock);
1276 if (obd->obd_recovering) {
1277 target_cancel_recovery_timer(obd);
1278 obd->obd_recovering = 0;
1280 spin_unlock_bh(&obd->obd_processing_task_lock);
1282 ptlrpc_stop_all_threads(ost->ost_service);
1283 ptlrpc_unregister_service(ost->ost_service);
1285 ptlrpc_stop_all_threads(ost->ost_create_service);
1286 ptlrpc_unregister_service(ost->ost_create_service);
1291 /* use obd ops to offer management infrastructure */
1292 static struct obd_ops ost_obd_ops = {
1293 .o_owner = THIS_MODULE,
1294 .o_attach = ost_attach,
1295 .o_detach = ost_detach,
1296 .o_setup = ost_setup,
1297 .o_cleanup = ost_cleanup,
1300 static int __init ost_init(void)
1302 struct lprocfs_static_vars lvars;
1305 lprocfs_init_vars(ost,&lvars);
1306 RETURN(class_register_type(&ost_obd_ops, NULL, lvars.module_vars,
1310 static void /*__exit*/ ost_exit(void)
1312 class_unregister_type(LUSTRE_OST_NAME);
1315 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1316 MODULE_DESCRIPTION("Lustre Object Storage Target (OST) v0.01");
1317 MODULE_LICENSE("GPL");
1319 module_init(ost_init);
1320 module_exit(ost_exit);