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 <libcfs/list.h>
47 #include <linux/lustre_sec.h>
48 #include <linux/lustre_audit.h>
50 void oti_init(struct obd_trans_info *oti, struct ptlrpc_request *req)
54 memset(oti, 0, sizeof *oti);
56 if (req->rq_repmsg && req->rq_reqmsg != 0)
57 oti->oti_transno = req->rq_repmsg->transno;
60 void oti_to_request(struct obd_trans_info *oti, struct ptlrpc_request *req)
62 struct oti_req_ack_lock *ack_lock;
69 req->rq_repmsg->transno = oti->oti_transno;
71 /* XXX 4 == entries in oti_ack_locks??? */
72 for (ack_lock = oti->oti_ack_locks, i = 0; i < 4; i++, ack_lock++) {
75 /* XXX not even calling target_send_reply in some cases... */
76 ptlrpc_save_lock (req, &ack_lock->lock, ack_lock->mode);
80 static int ost_destroy(struct obd_export *exp, struct ptlrpc_request *req,
81 struct obd_trans_info *oti)
83 struct ost_body *body, *repbody;
84 int rc, size = sizeof(*body);
87 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
91 rc = lustre_pack_reply(req, 1, &size, NULL);
95 if (body->oa.o_valid & OBD_MD_FLCOOKIE)
96 oti->oti_logcookies = obdo_logcookie(&body->oa);
97 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
98 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
99 req->rq_status = obd_destroy(exp, &body->oa, NULL, oti);
103 static int ost_getattr(struct obd_export *exp, struct ptlrpc_request *req)
105 struct ost_body *body, *repbody;
106 int rc, size = sizeof(*body);
109 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
113 rc = lustre_pack_reply(req, 1, &size, NULL);
117 repbody = lustre_msg_buf (req->rq_repmsg, 0, sizeof(*repbody));
118 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
119 req->rq_status = obd_getattr(exp, &repbody->oa, NULL);
123 static int ost_statfs(struct ptlrpc_request *req)
125 struct obd_statfs *osfs;
126 int rc, size = sizeof(*osfs);
129 rc = lustre_pack_reply(req, 1, &size, NULL);
133 osfs = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*osfs));
135 req->rq_status = obd_statfs(req->rq_export->exp_obd, osfs, jiffies-HZ);
136 if (req->rq_status != 0)
137 CERROR("ost: statfs failed: rc %d\n", req->rq_status);
142 static int ost_create(struct obd_export *exp, struct ptlrpc_request *req,
143 struct obd_trans_info *oti)
145 struct ost_body *body, *repbody;
146 int rc, size = sizeof(*repbody);
149 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
153 rc = lustre_pack_reply(req, 1, &size, NULL);
157 repbody = lustre_msg_buf (req->rq_repmsg, 0, sizeof(*repbody));
158 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
159 oti->oti_logcookies = obdo_logcookie(&repbody->oa);
160 req->rq_status = obd_create(exp, &repbody->oa, NULL, 0, NULL, oti);
161 //obd_log_cancel(conn, NULL, 1, oti->oti_logcookies, 0);
165 static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
166 struct obd_trans_info *oti)
168 struct ost_body *body, *repbody;
169 struct lustre_capa *capa = NULL;
170 int rc, size = sizeof(*repbody);
173 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
177 if ((body->oa.o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
178 (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
181 if (body->oa.o_valid & OBD_MD_CAPA) {
182 capa = lustre_swab_reqbuf(req, 1, sizeof(*capa),
183 lustre_swab_lustre_capa);
185 CERROR("Missing/short capa\n");
190 rc = lustre_pack_reply(req, 1, &size, NULL);
194 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
195 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
196 req->rq_status = obd_punch(exp, &repbody->oa, NULL, repbody->oa.o_size,
197 repbody->oa.o_blocks, oti, capa);
201 static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req)
203 struct ost_body *body, *repbody;
204 int rc, size = sizeof(*repbody);
207 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
211 rc = lustre_pack_reply(req, 1, &size, NULL);
215 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
216 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
217 req->rq_status = obd_sync(exp, &repbody->oa, NULL, repbody->oa.o_size,
218 repbody->oa.o_blocks);
222 static int ost_setattr(struct obd_export *exp, struct ptlrpc_request *req,
223 struct obd_trans_info *oti)
225 struct ost_body *body, *repbody;
226 int rc, size = sizeof(*repbody);
229 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
233 rc = lustre_pack_reply(req, 1, &size, NULL);
237 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
238 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
240 req->rq_status = obd_setattr(exp, &repbody->oa, NULL, oti);
244 static int ost_bulk_timeout(void *data)
247 /* We don't fail the connection here, because having the export
248 * killed makes the (vital) call to commitrw very sad.
253 static int get_per_page_niobufs(struct obd_ioobj *ioo, int nioo,
254 struct niobuf_remote *rnb, int nrnb,
255 struct niobuf_remote **pp_rnbp)
257 /* Copy a remote niobuf, splitting it into page-sized chunks
258 * and setting ioo[i].ioo_bufcnt accordingly */
259 struct niobuf_remote *pp_rnb;
266 /* first count and check the number of pages required */
267 for (i = 0; i < nioo; i++)
268 for (j = 0; j < ioo->ioo_bufcnt; j++, rnbidx++) {
269 obd_off offset = rnb[rnbidx].offset;
270 obd_off p0 = offset >> PAGE_SHIFT;
271 obd_off pn = (offset + rnb[rnbidx].len - 1)>>PAGE_SHIFT;
273 LASSERT(rnbidx < nrnb);
275 npages += (pn + 1 - p0);
277 if (rnb[rnbidx].len == 0) {
278 CERROR("zero len BRW: obj %d objid "LPX64
279 " buf %u\n", i, ioo[i].ioo_id, j);
283 rnb[rnbidx].offset <= rnb[rnbidx-1].offset) {
284 CERROR("unordered BRW: obj %d objid "LPX64
285 " buf %u offset "LPX64" <= "LPX64"\n",
286 i, ioo[i].ioo_id, j, rnb[rnbidx].offset,
292 LASSERT(rnbidx == nrnb);
294 if (npages == nrnb) { /* all niobufs are for single pages */
299 OBD_ALLOC(pp_rnb, sizeof(*pp_rnb) * npages);
303 /* now do the actual split */
305 for (i = 0; i < nioo; i++) {
308 for (j = 0; j < ioo[i].ioo_bufcnt; j++, rnbidx++) {
309 obd_off off = rnb[rnbidx].offset;
310 int nob = rnb[rnbidx].len;
312 LASSERT(rnbidx < nrnb);
314 obd_off poff = off & (PAGE_SIZE - 1);
315 int pnob = (poff + nob > PAGE_SIZE) ?
316 PAGE_SIZE - poff : nob;
318 LASSERT(page < npages);
319 pp_rnb[page].len = pnob;
320 pp_rnb[page].offset = off;
321 pp_rnb[page].flags = rnb[rnbidx].flags;
323 CDEBUG(0, " obj %d id "LPX64
324 "page %d(%d) "LPX64" for %d, flg %x\n",
325 i, ioo[i].ioo_id, obj_pages, page,
326 pp_rnb[page].offset, pp_rnb[page].len,
336 ioo[i].ioo_bufcnt = obj_pages;
338 LASSERT(page == npages);
344 static void free_per_page_niobufs (int npages, struct niobuf_remote *pp_rnb,
345 struct niobuf_remote *rnb)
347 if (pp_rnb == rnb) /* didn't allocate above */
350 OBD_FREE(pp_rnb, sizeof(*pp_rnb) * npages);
354 obd_count ost_checksum_bulk(struct ptlrpc_bulk_desc *desc)
357 struct ptlrpc_bulk_page *bp;
359 list_for_each_entry(bp, &desc->bd_page_list, bp_link) {
360 ost_checksum(&cksum, kmap(bp->bp_page) + bp->bp_pageoffset,
369 static void ost_stime_record(struct ptlrpc_request *req, struct timeval *start,
370 unsigned rw, unsigned phase)
372 struct obd_device *obd = req->rq_svc->srv_obddev;
374 int ind = rw *3 + phase;
376 if (obd && obd->obd_type && obd->obd_type->typ_name) {
377 if (!strcmp(obd->obd_type->typ_name, OBD_OST_DEVICENAME)) {
378 struct ost_obd *ost = NULL;
381 if (ind >= (sizeof(ost->ost_stimes) /
382 sizeof(ost->ost_stimes[0])))
384 do_gettimeofday(&stop);
386 spin_lock(&ost->ost_lock);
387 lprocfs_stime_record(&ost->ost_stimes[ind],&stop,start);
388 spin_unlock(&ost->ost_lock);
389 memcpy(start, &stop, sizeof(*start));
394 static int ost_brw_read(struct ptlrpc_request *req)
396 struct ptlrpc_bulk_desc *desc;
397 struct niobuf_remote *remote_nb;
398 struct niobuf_remote *pp_rnb;
399 struct niobuf_local *local_nb;
400 struct obd_ioobj *ioo;
401 struct ost_body *body, *repbody;
402 struct lustre_capa *capa = NULL;
403 struct l_wait_info lwi;
404 struct obd_trans_info oti = { 0 };
405 int size[1] = { sizeof(*body) };
412 struct timeval start;
415 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
416 GOTO(out, rc = -EIO);
418 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK | OBD_FAIL_ONCE,
419 (obd_timeout + 1) / 4);
421 body = lustre_swab_reqbuf(req, bufcnt++, sizeof(*body),
422 lustre_swab_ost_body);
424 CERROR("Missing/short ost_body\n");
425 GOTO(out, rc = -EFAULT);
428 ioo = lustre_swab_reqbuf(req, bufcnt++, sizeof(*ioo),
429 lustre_swab_obd_ioobj);
431 CERROR("Missing/short ioobj\n");
432 GOTO(out, rc = -EFAULT);
435 if (body->oa.o_valid & OBD_MD_CAPA) {
436 capa = lustre_swab_reqbuf(req, bufcnt++, sizeof(*capa),
437 lustre_swab_lustre_capa);
439 CERROR("Missing/short capa\n");
440 GOTO(out, rc = -EFAULT);
444 niocount = ioo->ioo_bufcnt;
445 remote_nb = lustre_swab_reqbuf(req, bufcnt++,
446 niocount * sizeof(*remote_nb),
447 lustre_swab_niobuf_remote);
448 if (remote_nb == NULL) {
449 CERROR("Missing/short niobuf\n");
450 GOTO(out, rc = -EFAULT);
452 if (lustre_msg_swabbed(req->rq_reqmsg)) { /* swab remaining niobufs */
453 for (i = 1; i < niocount; i++)
454 lustre_swab_niobuf_remote (&remote_nb[i]);
457 rc = lustre_pack_reply(req, 1, size, NULL);
461 /* FIXME all niobuf splitting should be done in obdfilter if needed */
462 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
463 npages = get_per_page_niobufs(ioo, 1, remote_nb, niocount, &pp_rnb);
465 GOTO(out, rc = npages);
467 OBD_ALLOC(local_nb, sizeof(*local_nb) * npages);
468 if (local_nb == NULL)
469 GOTO(out_pp_rnb, rc = -ENOMEM);
471 desc = ptlrpc_prep_bulk_exp (req, npages,
472 BULK_PUT_SOURCE, OST_BULK_PORTAL);
474 GOTO(out_local, rc = -ENOMEM);
476 do_gettimeofday(&start);
477 rc = obd_preprw(OBD_BRW_READ, req->rq_export, &body->oa, 1,
478 ioo, npages, pp_rnb, local_nb, &oti, capa);
479 ost_stime_record(req, &start, 0, 0);
483 /* We're finishing using body->oa as an input variable */
484 body->oa.o_valid = 0;
487 for (i = 0; i < npages; i++) {
488 int page_rc = local_nb[i].rc;
490 if (page_rc < 0) { /* error */
495 LASSERT(page_rc <= pp_rnb[i].len);
497 if (page_rc != 0) { /* some data! */
498 LASSERT (local_nb[i].page != NULL);
499 ptlrpc_prep_bulk_page(desc, local_nb[i].page,
500 pp_rnb[i].offset & (PAGE_SIZE-1),
504 if (page_rc != pp_rnb[i].len) { /* short read */
505 /* All subsequent pages should be 0 */
507 LASSERT(local_nb[i].rc == 0);
513 rc = ptlrpc_start_bulk_transfer(desc);
515 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4,
516 ost_bulk_timeout, desc);
517 rc = l_wait_event(desc->bd_waitq,
518 !ptlrpc_bulk_active(desc), &lwi);
519 LASSERT(rc == 0 || rc == -ETIMEDOUT);
520 if (rc == -ETIMEDOUT) {
521 DEBUG_REQ(D_ERROR, req, "timeout on bulk PUT"
522 ", expt_conn_cnt = %u",
523 req->rq_export->exp_conn_cnt);
524 ptlrpc_abort_bulk(desc);
525 } else if (!desc->bd_success ||
526 desc->bd_nob_transferred != desc->bd_nob) {
527 DEBUG_REQ(D_ERROR, req, "%s bulk PUT %d(%d)",
529 "truncated" : "network error on",
530 desc->bd_nob_transferred,
532 /* XXX should this be a different errno? */
536 DEBUG_REQ(D_ERROR, req, "bulk PUT failed: rc %d\n", rc);
538 comms_error = rc != 0;
541 ost_stime_record(req, &start, 0, 1);
542 /* Must commit after prep above in all cases */
543 rc = obd_commitrw(OBD_BRW_READ, req->rq_export, &body->oa, 1,
544 ioo, npages, local_nb, &oti, rc);
545 ost_stime_record(req, &start, 0, 2);
548 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
549 memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
552 repbody->oa.o_cksum = ost_checksum_bulk(desc);
553 repbody->oa.o_valid |= OBD_MD_FLCKSUM;
558 ptlrpc_free_bulk(desc);
560 OBD_FREE(local_nb, sizeof(*local_nb) * npages);
562 free_per_page_niobufs(npages, pp_rnb, remote_nb);
566 req->rq_status = nob;
568 } else if (!comms_error) {
569 /* only reply if comms OK */
573 if (req->rq_reply_state != NULL) {
574 /* reply out callback would free */
575 lustre_free_reply_state (req->rq_reply_state);
577 if (req->rq_reqmsg->conn_cnt == req->rq_export->exp_conn_cnt) {
578 CERROR("bulk IO comms error: "
579 "evicting %s@%s id %s\n",
580 req->rq_export->exp_client_uuid.uuid,
581 req->rq_export->exp_connection->c_remote_uuid.uuid,
583 ptlrpc_fail_export(req->rq_export);
585 CERROR("ignoring bulk IO comms error: "
586 "client reconnected %s@%s id %s\n",
587 req->rq_export->exp_client_uuid.uuid,
588 req->rq_export->exp_connection->c_remote_uuid.uuid,
596 int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
598 struct ptlrpc_bulk_desc *desc;
599 struct niobuf_remote *remote_nb;
600 struct niobuf_remote *pp_rnb;
601 struct niobuf_local *local_nb;
602 struct obd_ioobj *ioo;
603 struct lustre_capa *capa = NULL;
604 struct ost_body *body, *repbody;
605 struct l_wait_info lwi;
607 int size[2] = { sizeof(*body) };
608 int objcount, niocount, npages;
610 int rc, swab, i, j, bufcnt = 0;
611 struct timeval start;
614 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
615 GOTO(out, rc = -EIO);
617 /* pause before transaction has been started */
618 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK | OBD_FAIL_ONCE,
619 (obd_timeout + 1) / 4);
621 swab = lustre_msg_swabbed(req->rq_reqmsg);
622 body = lustre_swab_reqbuf(req, bufcnt++, sizeof(*body),
623 lustre_swab_ost_body);
625 CERROR("Missing/short ost_body\n");
626 GOTO(out, rc = -EFAULT);
629 LASSERT_REQSWAB(req, 1);
630 objcount = req->rq_reqmsg->buflens[1] / sizeof(*ioo);
632 CERROR("Missing/short ioobj\n");
633 GOTO(out, rc = -EFAULT);
635 ioo = lustre_msg_buf(req->rq_reqmsg, bufcnt++,
636 objcount * sizeof(*ioo));
637 LASSERT (ioo != NULL);
638 for (niocount = i = 0; i < objcount; i++) {
640 lustre_swab_obd_ioobj (&ioo[i]);
641 if (ioo[i].ioo_bufcnt == 0) {
642 CERROR("ioo[%d] has zero bufcnt\n", i);
643 GOTO(out, rc = -EFAULT);
645 niocount += ioo[i].ioo_bufcnt;
648 if (body->oa.o_valid & OBD_MD_CAPA) {
649 capa = lustre_swab_reqbuf(req, bufcnt++, sizeof(*capa),
650 lustre_swab_lustre_capa);
652 CERROR("Missing/short capa\n");
653 GOTO(out, rc = -EFAULT);
657 remote_nb = lustre_swab_reqbuf(req, bufcnt++,
658 niocount * sizeof(*remote_nb),
659 lustre_swab_niobuf_remote);
660 if (remote_nb == NULL) {
661 CERROR("Missing/short niobuf\n");
662 GOTO(out, rc = -EFAULT);
664 if (swab) { /* swab the remaining niobufs */
665 for (i = 1; i < niocount; i++)
666 lustre_swab_niobuf_remote (&remote_nb[i]);
669 size[1] = niocount * sizeof(*rcs);
670 rc = lustre_pack_reply(req, 2, size, NULL);
673 rcs = lustre_msg_buf(req->rq_repmsg, 1, niocount * sizeof(*rcs));
676 /* Do snap options here*/
677 rc = obd_do_cow(req->rq_export, ioo, objcount, remote_nb);
682 /* FIXME all niobuf splitting should be done in obdfilter if needed */
683 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
684 npages = get_per_page_niobufs(ioo, objcount,remote_nb,niocount,&pp_rnb);
686 GOTO(out, rc = npages);
688 OBD_ALLOC(local_nb, sizeof(*local_nb) * npages);
689 if (local_nb == NULL)
690 GOTO(out_pp_rnb, rc = -ENOMEM);
692 desc = ptlrpc_prep_bulk_exp (req, npages,
693 BULK_GET_SINK, OST_BULK_PORTAL);
695 GOTO(out_local, rc = -ENOMEM);
697 do_gettimeofday(&start);
698 rc = obd_preprw(OBD_BRW_WRITE, req->rq_export, &body->oa, objcount,
699 ioo, npages, pp_rnb, local_nb, oti, capa);
700 ost_stime_record(req, &start, 1, 0);
704 /* NB Having prepped, we must commit... */
706 for (i = 0; i < npages; i++)
707 ptlrpc_prep_bulk_page(desc, local_nb[i].page,
708 pp_rnb[i].offset & (PAGE_SIZE - 1),
711 rc = ptlrpc_start_bulk_transfer (desc);
713 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4,
714 ost_bulk_timeout, desc);
715 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc),
717 LASSERT(rc == 0 || rc == -ETIMEDOUT);
718 if (rc == -ETIMEDOUT) {
719 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
720 ptlrpc_abort_bulk(desc);
721 } else if (!desc->bd_success ||
722 desc->bd_nob_transferred != desc->bd_nob) {
723 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
725 "truncated" : "network error on",
726 desc->bd_nob_transferred, desc->bd_nob);
727 /* XXX should this be a different errno? */
731 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d\n", rc);
733 comms_error = rc != 0;
735 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
736 memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
739 if (rc == 0 && (body->oa.o_valid & OBD_MD_FLCKSUM) != 0) {
740 static int cksum_counter;
741 obd_count client_cksum = body->oa.o_cksum;
742 obd_count cksum = ost_checksum_bulk(desc);
744 if (client_cksum != cksum) {
745 CERROR("Bad checksum: client %x, server %x id %s\n",
749 repbody->oa.o_cksum = cksum;
752 if ((cksum_counter & (-cksum_counter)) == cksum_counter)
753 CWARN("Checksum %u from NID %s: %x OK\n",
754 cksum_counter, req->rq_peerstr, cksum);
758 ost_stime_record(req, &start, 1, 1);
759 /* Must commit after prep above in all cases */
760 rc = obd_commitrw(OBD_BRW_WRITE, req->rq_export, &repbody->oa,
761 objcount, ioo, npages, local_nb, oti, rc);
763 ost_stime_record(req, &start, 1, 2);
766 repbody->oa.o_cksum = ost_checksum_bulk(desc);
767 repbody->oa.o_valid |= OBD_MD_FLCKSUM;
769 /* set per-requested niobuf return codes */
770 for (i = j = 0; i < niocount; i++) {
771 int nob = remote_nb[i].len;
776 if (local_nb[j].rc < 0)
777 rcs[i] = local_nb[j].rc;
778 nob -= pp_rnb[j].len;
783 LASSERT(j == npages);
785 /*XXX This write extents only for write-back cache extents*/
786 rc = obd_write_extents(req->rq_export, ioo, objcount, niocount,
789 ptlrpc_free_bulk(desc);
791 OBD_FREE(local_nb, sizeof(*local_nb) * npages);
793 free_per_page_niobufs(npages, pp_rnb, remote_nb);
796 oti_to_request(oti, req);
797 rc = ptlrpc_reply(req);
798 } else if (!comms_error) {
799 /* Only reply if there was no comms problem with bulk */
803 if (req->rq_reply_state != NULL) {
804 /* reply out callback would free */
805 lustre_free_reply_state (req->rq_reply_state);
807 if (req->rq_reqmsg->conn_cnt == req->rq_export->exp_conn_cnt) {
808 CERROR("%s: bulk IO comm error evicting %s@%s id %s\n",
809 req->rq_export->exp_obd->obd_name,
810 req->rq_export->exp_client_uuid.uuid,
811 req->rq_export->exp_connection->c_remote_uuid.uuid,
813 ptlrpc_fail_export(req->rq_export);
815 CERROR("ignoring bulk IO comms error: "
816 "client reconnected %s@%s id %s\n",
817 req->rq_export->exp_client_uuid.uuid,
818 req->rq_export->exp_connection->c_remote_uuid.uuid,
824 EXPORT_SYMBOL(ost_brw_write);
826 static int ost_san_brw(struct ptlrpc_request *req, int cmd)
828 struct niobuf_remote *remote_nb, *res_nb, *pp_rnb;
829 struct obd_ioobj *ioo;
830 struct ost_body *body, *repbody;
831 int rc, i, objcount, niocount, size[2] = {sizeof(*body)}, npages;
835 /* XXX not set to use latest protocol */
837 swab = lustre_msg_swabbed(req->rq_reqmsg);
838 body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_ost_body);
840 CERROR("Missing/short ost_body\n");
841 GOTO(out, rc = -EFAULT);
844 ioo = lustre_swab_reqbuf(req, 1, sizeof(*ioo), lustre_swab_obd_ioobj);
846 CERROR("Missing/short ioobj\n");
847 GOTO(out, rc = -EFAULT);
849 objcount = req->rq_reqmsg->buflens[1] / sizeof(*ioo);
850 niocount = ioo[0].ioo_bufcnt;
851 for (i = 1; i < objcount; i++) {
853 lustre_swab_obd_ioobj (&ioo[i]);
854 niocount += ioo[i].ioo_bufcnt;
857 remote_nb = lustre_swab_reqbuf(req, 2, niocount * sizeof(*remote_nb),
858 lustre_swab_niobuf_remote);
859 if (remote_nb == NULL) {
860 CERROR("Missing/short niobuf\n");
861 GOTO(out, rc = -EFAULT);
863 if (swab) { /* swab the remaining niobufs */
864 for (i = 1; i < niocount; i++)
865 lustre_swab_niobuf_remote (&remote_nb[i]);
868 /* CAVEAT EMPTOR this sets ioo->ioo_bufcnt to # pages */
869 npages = get_per_page_niobufs(ioo, objcount,remote_nb,niocount,&pp_rnb);
871 GOTO (out, rc = npages);
873 size[1] = npages * sizeof(*pp_rnb);
874 rc = lustre_pack_reply(req, 2, size, NULL);
876 GOTO(out_pp_rnb, rc);
878 req->rq_status = obd_san_preprw(cmd, req->rq_export, &body->oa,
879 objcount, ioo, npages, pp_rnb);
882 GOTO(out_pp_rnb, rc = 0);
884 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
885 memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
887 res_nb = lustre_msg_buf(req->rq_repmsg, 1, size[1]);
888 memcpy(res_nb, remote_nb, size[1]);
891 free_per_page_niobufs(npages, pp_rnb, remote_nb);
902 static int ost_set_info(struct obd_export *exp, struct ptlrpc_request *req)
908 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
910 DEBUG_REQ(D_HA, req, "no set_info key");
913 keylen = req->rq_reqmsg->buflens[0];
915 rc = lustre_pack_reply(req, 0, NULL, NULL);
919 val = lustre_msg_buf(req->rq_reqmsg, 1, 0);
921 CERROR("val for setinfo can't be NULL\n");
925 if (keylen == 8 && memcmp(key, "auditlog", 8) == 0) {
926 lustre_swab_reqbuf(req, 1, sizeof(struct audit_msg),
927 lustre_swab_audit_msg);
928 } else if (keylen == 5 && strcmp(key, "audit") == 0) {
929 lustre_swab_reqbuf(req, 1, sizeof(struct audit_attr_msg),
930 lustre_swab_audit_attr);
931 } else if (keylen == 9 && strcmp(key, "audit_obj") == 0) {
932 lustre_swab_reqbuf(req, 1, sizeof(struct obdo),
934 } else if (keylen == 8 && strcmp(key, "capa_key") == 0) {
935 lustre_swab_reqbuf(req, 1, sizeof(struct lustre_capa_key),
936 lustre_swab_lustre_capa_key);
939 rc = obd_set_info(exp, keylen, key, req->rq_reqmsg->buflens[1], val);
940 req->rq_repmsg->status = 0;
944 static int ost_get_info(struct obd_export *exp, struct ptlrpc_request *req)
947 int keylen, rc = 0, size = sizeof(obd_id);
951 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
953 DEBUG_REQ(D_HA, req, "no get_info key");
956 keylen = req->rq_reqmsg->buflens[0];
958 if (keylen < strlen("last_id") || memcmp(key, "last_id", 7) != 0)
961 rc = lustre_pack_reply(req, 1, &size, NULL);
965 reply = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*reply));
966 rc = obd_get_info(exp, keylen, key, (__u32 *)&size, reply);
967 req->rq_repmsg->status = 0;
971 static int ost_llog_handle_connect(struct obd_export *exp,
972 struct ptlrpc_request *req)
974 struct llogd_conn_body *body;
978 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*body));
979 rc = obd_llog_connect(exp, body);
983 static int ost_filter_recovery_request(struct ptlrpc_request *req,
984 struct obd_device *obd, int *process)
986 switch (req->rq_reqmsg->opc) {
987 case OST_CONNECT: /* This will never get here, but for completeness. */
1001 *process = target_queue_recovery_request(req, obd);
1005 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1007 /* XXX what should we set rq_status to here? */
1008 req->rq_status = -EAGAIN;
1009 RETURN(ptlrpc_error(req));
1013 int ost_msg_check_version(struct lustre_msg *msg)
1019 case OST_DISCONNECT:
1034 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
1036 CERROR("bad opc %u version %08x, expecting %08x\n",
1037 msg->opc, msg->version, LUSTRE_OBD_VERSION);
1042 case LDLM_BL_CALLBACK:
1043 case LDLM_CP_CALLBACK:
1044 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
1046 CERROR("bad opc %u version %08x, expecting %08x\n",
1047 msg->opc, msg->version, LUSTRE_DLM_VERSION);
1049 case OBD_LOG_CANCEL:
1050 case LLOG_ORIGIN_CONNECT:
1051 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
1053 CERROR("bad opc %u version %08x, expecting %08x\n",
1054 msg->opc, msg->version, LUSTRE_LOG_VERSION);
1057 case SEC_INIT_CONTINUE:
1062 CERROR("OST unexpected opcode %d\n", msg->opc);
1069 int ost_handle(struct ptlrpc_request *req)
1071 int should_process, fail = OBD_FAIL_OST_ALL_REPLY_NET, rc = 0;
1072 struct obd_trans_info *oti = NULL;
1073 struct obd_device *obd = NULL;
1076 LASSERT(current->journal_info == NULL);
1078 rc = ost_msg_check_version(req->rq_reqmsg);
1080 CERROR("OST drop mal-formed request\n");
1084 /* Security opc should NOT trigger any recovery events */
1085 if (req->rq_reqmsg->opc == SEC_INIT ||
1086 req->rq_reqmsg->opc == SEC_INIT_CONTINUE ||
1087 req->rq_reqmsg->opc == SEC_FINI) {
1088 GOTO(out_check_req, rc = 0);
1091 /* XXX identical to MDS */
1092 if (req->rq_reqmsg->opc != OST_CONNECT) {
1095 if (req->rq_export == NULL) {
1096 CDEBUG(D_HA,"operation %d on unconnected OST from %s\n",
1097 req->rq_reqmsg->opc,
1099 req->rq_status = -ENOTCONN;
1100 GOTO(out_check_req, rc = -ENOTCONN);
1103 obd = req->rq_export->exp_obd;
1105 /* Check for aborted recovery. */
1106 spin_lock_bh(&obd->obd_processing_task_lock);
1107 recovering = obd->obd_recovering;
1108 spin_unlock_bh(&obd->obd_processing_task_lock);
1110 rc = ost_filter_recovery_request(req, obd,
1112 if (rc || !should_process)
1114 if (should_process < 0) {
1115 req->rq_status = should_process;
1116 rc = ptlrpc_error(req);
1122 OBD_ALLOC(oti, sizeof(*oti));
1128 switch (req->rq_reqmsg->opc) {
1130 CDEBUG(D_INODE, "connect\n");
1131 OBD_FAIL_GOTO(OBD_FAIL_OST_CONNECT_NET, out_free_oti, rc = 0);
1132 rc = target_handle_connect(req);
1134 obd = req->rq_export->exp_obd;
1137 case OST_DISCONNECT:
1138 CDEBUG(D_INODE, "disconnect\n");
1139 OBD_FAIL_GOTO(OBD_FAIL_OST_DISCONNECT_NET, out_free_oti, rc = 0);
1140 rc = target_handle_disconnect(req);
1143 CDEBUG(D_INODE, "create\n");
1144 OBD_FAIL_GOTO(OBD_FAIL_OST_ENOSPC, out_check_req, rc = -ENOSPC);
1145 OBD_FAIL_GOTO(OBD_FAIL_OST_EROFS, out_check_req, rc = -EROFS);
1146 OBD_FAIL_GOTO(OBD_FAIL_OST_CREATE_NET, out_free_oti, rc = 0);
1147 rc = ost_create(req->rq_export, req, oti);
1150 CDEBUG(D_INODE, "destroy\n");
1151 OBD_FAIL_GOTO(OBD_FAIL_OST_DESTROY_NET, out_free_oti, rc = 0);
1152 OBD_FAIL_GOTO(OBD_FAIL_OST_EROFS, out_check_req, rc = -EROFS);
1153 rc = ost_destroy(req->rq_export, req, oti);
1156 CDEBUG(D_INODE, "getattr\n");
1157 OBD_FAIL_GOTO(OBD_FAIL_OST_GETATTR_NET, out_free_oti, rc = 0);
1158 rc = ost_getattr(req->rq_export, req);
1161 CDEBUG(D_INODE, "setattr\n");
1162 OBD_FAIL_GOTO(OBD_FAIL_OST_SETATTR_NET, out_free_oti, rc = 0);
1163 rc = ost_setattr(req->rq_export, req, oti);
1166 CDEBUG(D_INODE, "write\n");
1167 OBD_FAIL_GOTO(OBD_FAIL_OST_BRW_NET, out_free_oti, rc = 0);
1168 OBD_FAIL_GOTO(OBD_FAIL_OST_ENOSPC, out_check_req, rc = -ENOSPC);
1169 OBD_FAIL_GOTO(OBD_FAIL_OST_EROFS, out_check_req, rc = -EROFS);
1170 rc = ost_brw_write(req, oti);
1171 LASSERT(current->journal_info == NULL);
1172 /* ost_brw sends its own replies */
1173 GOTO(out_free_oti, rc);
1175 CDEBUG(D_INODE, "read\n");
1176 OBD_FAIL_GOTO(OBD_FAIL_OST_BRW_NET, out_free_oti, rc = 0);
1177 rc = ost_brw_read(req);
1178 LASSERT(current->journal_info == NULL);
1179 /* ost_brw sends its own replies */
1180 GOTO(out_free_oti, rc);
1182 CDEBUG(D_INODE, "san read\n");
1183 OBD_FAIL_GOTO(OBD_FAIL_OST_BRW_NET, out_free_oti, rc = 0);
1184 rc = ost_san_brw(req, OBD_BRW_READ);
1185 /* ost_san_brw sends its own replies */
1186 GOTO(out_free_oti, rc);
1188 CDEBUG(D_INODE, "san write\n");
1189 OBD_FAIL_GOTO(OBD_FAIL_OST_BRW_NET, out_free_oti, rc = 0);
1190 rc = ost_san_brw(req, OBD_BRW_WRITE);
1191 /* ost_san_brw sends its own replies */
1192 GOTO(out_free_oti, rc);
1194 CDEBUG(D_INODE, "punch\n");
1195 OBD_FAIL_GOTO(OBD_FAIL_OST_PUNCH_NET, out_free_oti, rc = 0);
1196 OBD_FAIL_GOTO(OBD_FAIL_OST_EROFS, out_check_req, rc = -EROFS);
1197 rc = ost_punch(req->rq_export, req, oti);
1200 CDEBUG(D_INODE, "statfs\n");
1201 OBD_FAIL_GOTO(OBD_FAIL_OST_STATFS_NET, out_free_oti, rc = 0);
1202 rc = ost_statfs(req);
1205 CDEBUG(D_INODE, "sync\n");
1206 OBD_FAIL_GOTO(OBD_FAIL_OST_SYNC_NET, out_free_oti, rc = 0);
1207 rc = ost_sync(req->rq_export, req);
1210 DEBUG_REQ(D_INODE, req, "set_info");
1211 rc = ost_set_info(req->rq_export, req);
1214 DEBUG_REQ(D_INODE, req, "get_info");
1215 rc = ost_get_info(req->rq_export, req);
1218 DEBUG_REQ(D_INODE, req, "ping");
1219 rc = target_handle_ping(req);
1221 /* FIXME - just reply status */
1222 case LLOG_ORIGIN_CONNECT:
1223 DEBUG_REQ(D_INODE, req, "log connect\n");
1224 rc = ost_llog_handle_connect(req->rq_export, req);
1225 req->rq_status = rc;
1226 rc = lustre_pack_reply(req, 0, NULL, NULL);
1228 GOTO(out_free_oti, rc);
1229 GOTO(out_free_oti, rc = ptlrpc_reply(req));
1230 case OBD_LOG_CANCEL:
1231 CDEBUG(D_INODE, "log cancel\n");
1232 OBD_FAIL_GOTO(OBD_FAIL_OBD_LOG_CANCEL_NET, out_free_oti, rc = 0);
1233 rc = llog_origin_handle_cancel(req);
1234 req->rq_status = rc;
1235 rc = lustre_pack_reply(req, 0, NULL, NULL);
1237 GOTO(out_free_oti, rc);
1238 GOTO(out_free_oti, rc = ptlrpc_reply(req));
1240 CDEBUG(D_INODE, "enqueue\n");
1241 OBD_FAIL_GOTO(OBD_FAIL_LDLM_ENQUEUE, out_free_oti, rc = 0);
1242 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
1243 ldlm_server_blocking_ast,
1244 ldlm_server_glimpse_ast);
1245 fail = OBD_FAIL_OST_LDLM_REPLY_NET;
1248 CDEBUG(D_INODE, "convert\n");
1249 OBD_FAIL_GOTO(OBD_FAIL_LDLM_CONVERT, out_free_oti, rc = 0);
1250 rc = ldlm_handle_convert(req);
1253 CDEBUG(D_INODE, "cancel\n");
1254 OBD_FAIL_GOTO(OBD_FAIL_LDLM_CANCEL, out_free_oti, rc = 0);
1255 rc = ldlm_handle_cancel(req);
1257 case LDLM_BL_CALLBACK:
1258 case LDLM_CP_CALLBACK:
1259 CDEBUG(D_INODE, "callback\n");
1260 CERROR("callbacks should not happen on OST\n");
1263 CERROR("Unexpected opcode %d\n", req->rq_reqmsg->opc);
1264 req->rq_status = -ENOTSUPP;
1265 rc = ptlrpc_error(req);
1266 GOTO(out_free_oti, rc);
1269 LASSERT(current->journal_info == NULL);
1272 /* If we're DISCONNECTing, the export_data is already freed */
1273 if (!rc && req->rq_reqmsg->opc != OST_DISCONNECT) {
1274 if (!obd->obd_no_transno) {
1275 req->rq_repmsg->last_committed =
1276 obd->obd_last_committed;
1278 DEBUG_REQ(D_IOCTL, req,
1279 "not sending last_committed update");
1281 CDEBUG(D_INFO, "last_committed "LPU64", xid "LPX64"\n",
1282 obd->obd_last_committed, req->rq_xid);
1288 oti_to_request(oti, req);
1289 target_send_reply(req, rc, fail);
1294 OBD_FREE(oti, sizeof(*oti));
1297 EXPORT_SYMBOL(ost_handle);
1299 int ost_attach(struct obd_device *dev, obd_count len, void *data)
1301 struct lprocfs_static_vars lvars;
1303 lprocfs_init_vars(ost,&lvars);
1304 return lprocfs_obd_attach(dev, lvars.obd_vars);
1307 int ost_detach(struct obd_device *dev)
1309 return lprocfs_obd_detach(dev);
1312 extern struct file_operations ost_stimes_fops;
1314 static int ost_setup(struct obd_device *obd, obd_count len, void *buf)
1316 struct ost_obd *ost = &obd->u.ost;
1320 rc = cleanup_group_info();
1324 rc = llog_start_commit_thread();
1328 lprocfs_obd_seq_create(obd, "service_times", 0444, &ost_stimes_fops,
1332 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1333 OST_REQUEST_PORTAL, OSC_REPLY_PORTAL, 30000,
1335 obd->obd_proc_entry);
1336 if (ost->ost_service == NULL) {
1337 CERROR("failed to start service\n");
1341 rc = ptlrpc_start_n_threads(obd, ost->ost_service, OST_NUM_THREADS,
1344 GOTO(out_service, rc = -EINVAL);
1346 ost->ost_create_service =
1347 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1348 OST_CREATE_PORTAL, OSC_REPLY_PORTAL, 30000,
1349 ost_handle, "ost_create",
1350 obd->obd_proc_entry);
1351 if (ost->ost_create_service == NULL) {
1352 CERROR("failed to start OST create service\n");
1353 GOTO(out_service, rc = -ENOMEM);
1357 spin_lock_init(&ost->ost_lock);
1358 ost->ost_service->srv_obddev = obd;
1360 rc = ptlrpc_start_n_threads(obd, ost->ost_create_service, 1,
1363 GOTO(out_create, rc = -EINVAL);
1365 ost->ost_destroy_service =
1366 ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE,
1367 OST_DESTROY_PORTAL, OSC_REPLY_PORTAL, 30000,
1368 ost_handle, "ost_destroy",
1369 obd->obd_proc_entry);
1370 if (ost->ost_destroy_service == NULL) {
1371 CERROR("failed to start service\n");
1372 GOTO(out_create, rc = -ENOMEM);
1375 rc = ptlrpc_start_n_threads(obd, ost->ost_destroy_service,
1376 OST_NUM_THREADS, "ll_dstr_ost");
1378 GOTO(out_destroy, rc = -EINVAL);
1383 ptlrpc_unregister_service(ost->ost_destroy_service);
1385 ptlrpc_unregister_service(ost->ost_create_service);
1387 ptlrpc_unregister_service(ost->ost_service);
1391 extern void lgss_svc_cache_purge_all(void);
1392 static int ost_cleanup(struct obd_device *obd, int flags)
1394 struct ost_obd *ost = &obd->u.ost;
1398 spin_lock_bh(&obd->obd_processing_task_lock);
1399 if (obd->obd_recovering) {
1400 target_cancel_recovery_timer(obd);
1401 obd->obd_recovering = 0;
1403 spin_unlock_bh(&obd->obd_processing_task_lock);
1405 ptlrpc_stop_all_threads(ost->ost_service);
1406 ptlrpc_unregister_service(ost->ost_service);
1408 ptlrpc_stop_all_threads(ost->ost_create_service);
1409 ptlrpc_unregister_service(ost->ost_create_service);
1411 ptlrpc_stop_all_threads(ost->ost_destroy_service);
1412 ptlrpc_unregister_service(ost->ost_destroy_service);
1416 lgss_svc_cache_purge_all();
1421 /* use obd ops to offer management infrastructure */
1422 static struct obd_ops ost_obd_ops = {
1423 .o_owner = THIS_MODULE,
1424 .o_attach = ost_attach,
1425 .o_detach = ost_detach,
1426 .o_setup = ost_setup,
1427 .o_cleanup = ost_cleanup,
1430 static int __init ost_init(void)
1432 struct lprocfs_static_vars lvars;
1435 lprocfs_init_vars(ost,&lvars);
1436 RETURN(class_register_type(&ost_obd_ops, NULL, lvars.module_vars,
1437 OBD_OST_DEVICENAME));
1440 static void /*__exit*/ ost_exit(void)
1442 class_unregister_type(OBD_OST_DEVICENAME);
1445 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1446 MODULE_DESCRIPTION("Lustre Object Storage Target (OST) v0.01");
1447 MODULE_LICENSE("GPL");
1449 module_init(ost_init);
1450 module_exit(ost_exit);