4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_LDLM
40 # include <libcfs/libcfs.h>
42 # include <liblustre.h>
45 #include <obd_class.h>
46 #include <lustre_dlm.h>
47 #include <lustre_net.h>
48 #include <lustre_sec.h>
49 #include "ldlm_internal.h"
51 /* @priority: if non-zero, move the selected to the list head
52 * @create: if zero, only search in existed connections
54 static int import_set_conn(struct obd_import *imp, struct obd_uuid *uuid,
55 int priority, int create)
57 struct ptlrpc_connection *ptlrpc_conn;
58 struct obd_import_conn *imp_conn = NULL, *item;
62 if (!create && !priority) {
63 CDEBUG(D_HA, "Nothing to do\n");
67 ptlrpc_conn = ptlrpc_uuid_to_connection(uuid);
69 CDEBUG(D_HA, "can't find connection %s\n", uuid->uuid);
74 OBD_ALLOC(imp_conn, sizeof(*imp_conn));
76 GOTO(out_put, rc = -ENOMEM);
80 cfs_spin_lock(&imp->imp_lock);
81 cfs_list_for_each_entry(item, &imp->imp_conn_list, oic_item) {
82 if (obd_uuid_equals(uuid, &item->oic_uuid)) {
84 cfs_list_del(&item->oic_item);
85 cfs_list_add(&item->oic_item,
87 item->oic_last_attempt = 0;
89 CDEBUG(D_HA, "imp %p@%s: found existing conn %s%s\n",
90 imp, imp->imp_obd->obd_name, uuid->uuid,
91 (priority ? ", moved to head" : ""));
92 cfs_spin_unlock(&imp->imp_lock);
93 GOTO(out_free, rc = 0);
98 imp_conn->oic_conn = ptlrpc_conn;
99 imp_conn->oic_uuid = *uuid;
100 imp_conn->oic_last_attempt = 0;
102 cfs_list_add(&imp_conn->oic_item, &imp->imp_conn_list);
104 cfs_list_add_tail(&imp_conn->oic_item,
105 &imp->imp_conn_list);
106 CDEBUG(D_HA, "imp %p@%s: add connection %s at %s\n",
107 imp, imp->imp_obd->obd_name, uuid->uuid,
108 (priority ? "head" : "tail"));
110 cfs_spin_unlock(&imp->imp_lock);
111 GOTO(out_free, rc = -ENOENT);
114 cfs_spin_unlock(&imp->imp_lock);
118 OBD_FREE(imp_conn, sizeof(*imp_conn));
120 ptlrpc_connection_put(ptlrpc_conn);
124 int import_set_conn_priority(struct obd_import *imp, struct obd_uuid *uuid)
126 return import_set_conn(imp, uuid, 1, 0);
129 int client_import_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
132 return import_set_conn(imp, uuid, priority, 1);
135 int client_import_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
137 struct obd_import_conn *imp_conn;
138 struct obd_export *dlmexp;
142 cfs_spin_lock(&imp->imp_lock);
143 if (cfs_list_empty(&imp->imp_conn_list)) {
144 LASSERT(!imp->imp_connection);
148 cfs_list_for_each_entry(imp_conn, &imp->imp_conn_list, oic_item) {
149 if (!obd_uuid_equals(uuid, &imp_conn->oic_uuid))
151 LASSERT(imp_conn->oic_conn);
153 /* is current conn? */
154 if (imp_conn == imp->imp_conn_current) {
155 LASSERT(imp_conn->oic_conn == imp->imp_connection);
157 if (imp->imp_state != LUSTRE_IMP_CLOSED &&
158 imp->imp_state != LUSTRE_IMP_DISCON) {
159 CERROR("can't remove current connection\n");
160 GOTO(out, rc = -EBUSY);
163 ptlrpc_connection_put(imp->imp_connection);
164 imp->imp_connection = NULL;
166 dlmexp = class_conn2export(&imp->imp_dlm_handle);
167 if (dlmexp && dlmexp->exp_connection) {
168 LASSERT(dlmexp->exp_connection ==
170 ptlrpc_connection_put(dlmexp->exp_connection);
171 dlmexp->exp_connection = NULL;
175 cfs_list_del(&imp_conn->oic_item);
176 ptlrpc_connection_put(imp_conn->oic_conn);
177 OBD_FREE(imp_conn, sizeof(*imp_conn));
178 CDEBUG(D_HA, "imp %p@%s: remove connection %s\n",
179 imp, imp->imp_obd->obd_name, uuid->uuid);
184 cfs_spin_unlock(&imp->imp_lock);
186 CERROR("connection %s not found\n", uuid->uuid);
191 * Find conn uuid by peer nid. @peer is a server nid. This function is used
192 * to find a conn uuid of @imp which can reach @peer.
194 int client_import_find_conn(struct obd_import *imp, lnet_nid_t peer,
195 struct obd_uuid *uuid)
197 struct obd_import_conn *conn;
201 cfs_spin_lock(&imp->imp_lock);
202 cfs_list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
203 /* check if conn uuid does have this peer nid */
204 if (class_check_uuid(&conn->oic_uuid, peer)) {
205 *uuid = conn->oic_uuid;
210 cfs_spin_unlock(&imp->imp_lock);
213 EXPORT_SYMBOL(client_import_find_conn);
215 void client_destroy_import(struct obd_import *imp)
217 /* drop security policy instance after all rpc finished/aborted
218 * to let all busy contexts be released. */
219 class_import_get(imp);
220 class_destroy_import(imp);
221 sptlrpc_import_sec_put(imp);
222 class_import_put(imp);
224 EXPORT_SYMBOL(client_destroy_import);
227 * check whether the osc is on MDT or not
230 * setup 0:{fsname}-OSTxxxx-osc[-MDTxxxx] 1:lustre-OST0000_UUID 2:NID
232 * setup 0:{fsname}-OSTxxxx-osc 1:lustre-OST0000_UUID 2:NID
235 static int osc_on_mdt(char *obdname)
239 ptr = strrchr(obdname, '-');
243 if (strncmp(ptr + 1, "MDT", 3) == 0)
249 /* configure an RPC client OBD device
254 * 3 - inactive-on-startup
256 int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
258 struct client_obd *cli = &obddev->u.cli;
259 struct obd_import *imp;
260 struct obd_uuid server_uuid;
261 int rq_portal, rp_portal, connect_op;
262 char *name = obddev->obd_type->typ_name;
263 ldlm_ns_type_t ns_type = LDLM_NS_TYPE_UNKNOWN;
267 /* In a more perfect world, we would hang a ptlrpc_client off of
268 * obd_type and just use the values from there. */
269 if (!strcmp(name, LUSTRE_OSC_NAME) ||
270 (!strcmp(name, LUSTRE_OSP_NAME) &&
271 !is_osp_on_ost(lustre_cfg_buf(lcfg, 0)))) {
272 rq_portal = OST_REQUEST_PORTAL;
273 rp_portal = OSC_REPLY_PORTAL;
274 connect_op = OST_CONNECT;
275 cli->cl_sp_me = LUSTRE_SP_CLI;
276 cli->cl_sp_to = LUSTRE_SP_OST;
277 ns_type = LDLM_NS_TYPE_OSC;
279 } else if (!strcmp(name, LUSTRE_MDC_NAME) ||
280 (!strcmp(name, LUSTRE_OSP_NAME) &&
281 is_osp_on_ost(lustre_cfg_buf(lcfg, 0)))) {
282 rq_portal = MDS_REQUEST_PORTAL;
283 rp_portal = MDC_REPLY_PORTAL;
284 connect_op = MDS_CONNECT;
285 cli->cl_sp_me = LUSTRE_SP_CLI;
286 cli->cl_sp_to = LUSTRE_SP_MDT;
287 ns_type = LDLM_NS_TYPE_MDC;
289 } else if (!strcmp(name, LUSTRE_MGC_NAME)) {
290 rq_portal = MGS_REQUEST_PORTAL;
291 rp_portal = MGC_REPLY_PORTAL;
292 connect_op = MGS_CONNECT;
293 cli->cl_sp_me = LUSTRE_SP_MGC;
294 cli->cl_sp_to = LUSTRE_SP_MGS;
295 cli->cl_flvr_mgc.sf_rpc = SPTLRPC_FLVR_INVALID;
296 ns_type = LDLM_NS_TYPE_MGC;
298 } else if (!strcmp(name, LUSTRE_OSP_NAME)) {
299 rq_portal = OST_REQUEST_PORTAL;
300 rp_portal = OSC_REPLY_PORTAL;
301 connect_op = OST_CONNECT;
302 cli->cl_sp_me = LUSTRE_SP_CLI;
303 cli->cl_sp_to = LUSTRE_SP_OST;
304 ns_type = LDLM_NS_TYPE_OSC;
307 CERROR("unknown client OBD type \"%s\", can't setup\n",
312 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
313 CERROR("requires a TARGET UUID\n");
317 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > 37) {
318 CERROR("client UUID must be less than 38 characters\n");
322 if (LUSTRE_CFG_BUFLEN(lcfg, 2) < 1) {
323 CERROR("setup requires a SERVER UUID\n");
327 if (LUSTRE_CFG_BUFLEN(lcfg, 2) > 37) {
328 CERROR("target UUID must be less than 38 characters\n");
332 cfs_init_rwsem(&cli->cl_sem);
333 cfs_sema_init(&cli->cl_mgc_sem, 1);
334 cli->cl_conn_count = 0;
335 memcpy(server_uuid.uuid, lustre_cfg_buf(lcfg, 2),
336 min_t(unsigned int, LUSTRE_CFG_BUFLEN(lcfg, 2),
337 sizeof(server_uuid)));
340 cli->cl_avail_grant = 0;
341 /* FIXME: should limit this for the sum of all cl_dirty_max */
342 cli->cl_dirty_max = OSC_MAX_DIRTY_DEFAULT * 1024 * 1024;
343 if (cli->cl_dirty_max >> CFS_PAGE_SHIFT > cfs_num_physpages / 8)
344 cli->cl_dirty_max = cfs_num_physpages << (CFS_PAGE_SHIFT - 3);
345 CFS_INIT_LIST_HEAD(&cli->cl_cache_waiters);
346 CFS_INIT_LIST_HEAD(&cli->cl_loi_ready_list);
347 CFS_INIT_LIST_HEAD(&cli->cl_loi_hp_ready_list);
348 CFS_INIT_LIST_HEAD(&cli->cl_loi_write_list);
349 CFS_INIT_LIST_HEAD(&cli->cl_loi_read_list);
350 client_obd_list_lock_init(&cli->cl_loi_list_lock);
351 cfs_atomic_set(&cli->cl_pending_w_pages, 0);
352 cfs_atomic_set(&cli->cl_pending_r_pages, 0);
353 cli->cl_r_in_flight = 0;
354 cli->cl_w_in_flight = 0;
356 cfs_spin_lock_init(&cli->cl_read_rpc_hist.oh_lock);
357 cfs_spin_lock_init(&cli->cl_write_rpc_hist.oh_lock);
358 cfs_spin_lock_init(&cli->cl_read_page_hist.oh_lock);
359 cfs_spin_lock_init(&cli->cl_write_page_hist.oh_lock);
360 cfs_spin_lock_init(&cli->cl_read_offset_hist.oh_lock);
361 cfs_spin_lock_init(&cli->cl_write_offset_hist.oh_lock);
362 cfs_waitq_init(&cli->cl_destroy_waitq);
363 cfs_atomic_set(&cli->cl_destroy_in_flight, 0);
364 #ifdef ENABLE_CHECKSUM
365 /* Turn on checksumming by default. */
366 cli->cl_checksum = 1;
368 * The supported checksum types will be worked out at connect time
369 * Set cl_chksum* to CRC32 for now to avoid returning screwed info
372 cli->cl_cksum_type = cli->cl_supp_cksum_types = OBD_CKSUM_CRC32;
374 cfs_atomic_set(&cli->cl_resends, OSC_DEFAULT_RESENDS);
376 /* This value may be changed at connect time in
377 ptlrpc_connect_interpret. */
378 cli->cl_max_pages_per_rpc = min((int)PTLRPC_MAX_BRW_PAGES,
379 (int)(1024 * 1024 >> CFS_PAGE_SHIFT));
381 if (!strcmp(name, LUSTRE_MDC_NAME)) {
382 cli->cl_max_rpcs_in_flight = MDC_MAX_RIF_DEFAULT;
383 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 128 /* MB */) {
384 cli->cl_max_rpcs_in_flight = 2;
385 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 256 /* MB */) {
386 cli->cl_max_rpcs_in_flight = 3;
387 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 512 /* MB */) {
388 cli->cl_max_rpcs_in_flight = 4;
390 if (osc_on_mdt(obddev->obd_name))
391 cli->cl_max_rpcs_in_flight = MDS_OSC_MAX_RIF_DEFAULT;
393 cli->cl_max_rpcs_in_flight = OSC_MAX_RIF_DEFAULT;
397 CERROR("ldlm_get_ref failed: %d\n", rc);
401 ptlrpc_init_client(rq_portal, rp_portal, name,
402 &obddev->obd_ldlm_client);
404 imp = class_new_import(obddev);
406 GOTO(err_ldlm, rc = -ENOENT);
407 imp->imp_client = &obddev->obd_ldlm_client;
408 imp->imp_connect_op = connect_op;
409 CFS_INIT_LIST_HEAD(&imp->imp_pinger_chain);
410 memcpy(cli->cl_target_uuid.uuid, lustre_cfg_buf(lcfg, 1),
411 LUSTRE_CFG_BUFLEN(lcfg, 1));
412 class_import_put(imp);
414 rc = client_import_add_conn(imp, &server_uuid, 1);
416 CERROR("can't add initial connection\n");
417 GOTO(err_import, rc);
420 cli->cl_import = imp;
421 /* cli->cl_max_mds_{easize,cookiesize} updated by mdc_init_ea_size() */
422 cli->cl_max_mds_easize = sizeof(struct lov_mds_md_v3);
423 cli->cl_max_mds_cookiesize = sizeof(struct llog_cookie);
425 if (LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
426 if (!strcmp(lustre_cfg_string(lcfg, 3), "inactive")) {
427 CDEBUG(D_HA, "marking %s %s->%s as inactive\n",
428 name, obddev->obd_name,
429 cli->cl_target_uuid.uuid);
430 cfs_spin_lock(&imp->imp_lock);
431 imp->imp_deactive = 1;
432 cfs_spin_unlock(&imp->imp_lock);
436 obddev->obd_namespace = ldlm_namespace_new(obddev, obddev->obd_name,
437 LDLM_NAMESPACE_CLIENT,
438 LDLM_NAMESPACE_GREEDY,
440 if (obddev->obd_namespace == NULL) {
441 CERROR("Unable to create client namespace - %s\n",
443 GOTO(err_import, rc = -ENOMEM);
446 cli->cl_qchk_stat = CL_NOT_QUOTACHECKED;
451 class_destroy_import(imp);
459 int client_obd_cleanup(struct obd_device *obddev)
463 ldlm_namespace_free_post(obddev->obd_namespace);
464 obddev->obd_namespace = NULL;
466 LASSERT(obddev->u.cli.cl_import == NULL);
472 /* ->o_connect() method for client side (OSC and MDC and MGC) */
473 int client_connect_import(const struct lu_env *env,
474 struct obd_export **exp,
475 struct obd_device *obd, struct obd_uuid *cluuid,
476 struct obd_connect_data *data, void *localdata)
478 struct client_obd *cli = &obd->u.cli;
479 struct obd_import *imp = cli->cl_import;
480 struct obd_connect_data *ocd;
481 struct lustre_handle conn = { 0 };
486 cfs_down_write(&cli->cl_sem);
487 if (cli->cl_conn_count > 0 )
488 GOTO(out_sem, rc = -EALREADY);
490 rc = class_connect(&conn, obd, cluuid);
494 cli->cl_conn_count++;
495 *exp = class_conn2export(&conn);
497 LASSERT(obd->obd_namespace);
499 imp->imp_dlm_handle = conn;
500 rc = ptlrpc_init_import(imp);
504 ocd = &imp->imp_connect_data;
507 imp->imp_connect_flags_orig = data->ocd_connect_flags;
510 rc = ptlrpc_connect_import(imp);
512 LASSERT (imp->imp_state == LUSTRE_IMP_DISCON);
515 LASSERT((*exp)->exp_connection);
518 LASSERTF((ocd->ocd_connect_flags & data->ocd_connect_flags) ==
519 ocd->ocd_connect_flags, "old "LPX64", new "LPX64"\n",
520 data->ocd_connect_flags, ocd->ocd_connect_flags);
521 data->ocd_connect_flags = ocd->ocd_connect_flags;
524 ptlrpc_pinger_add_import(imp);
530 cli->cl_conn_count--;
531 class_disconnect(*exp);
535 cfs_up_write(&cli->cl_sem);
540 int client_disconnect_export(struct obd_export *exp)
542 struct obd_device *obd = class_exp2obd(exp);
543 struct client_obd *cli;
544 struct obd_import *imp;
549 CERROR("invalid export for disconnect: exp %p cookie "LPX64"\n",
550 exp, exp ? exp->exp_handle.h_cookie : -1);
555 imp = cli->cl_import;
557 cfs_down_write(&cli->cl_sem);
558 CDEBUG(D_INFO, "disconnect %s - %d\n", obd->obd_name,
561 if (!cli->cl_conn_count) {
562 CERROR("disconnecting disconnected device (%s)\n",
564 GOTO(out_disconnect, rc = -EINVAL);
567 cli->cl_conn_count--;
568 if (cli->cl_conn_count)
569 GOTO(out_disconnect, rc = 0);
571 /* Mark import deactivated now, so we don't try to reconnect if any
572 * of the cleanup RPCs fails (e.g. ldlm cancel, etc). We don't
573 * fully deactivate the import, or that would drop all requests. */
574 cfs_spin_lock(&imp->imp_lock);
575 imp->imp_deactive = 1;
576 cfs_spin_unlock(&imp->imp_lock);
578 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
579 * delete it regardless. (It's safe to delete an import that was
581 (void)ptlrpc_pinger_del_import(imp);
583 if (obd->obd_namespace != NULL) {
584 /* obd_force == local only */
585 ldlm_cli_cancel_unused(obd->obd_namespace, NULL,
586 obd->obd_force ? LCF_LOCAL : 0, NULL);
587 ldlm_namespace_free_prior(obd->obd_namespace, imp, obd->obd_force);
591 * there's no need to hold sem during disconnecting an import,
592 * and actually it may cause deadlock in gss.
594 cfs_up_write(&cli->cl_sem);
595 rc = ptlrpc_disconnect_import(imp, 0);
596 cfs_down_write(&cli->cl_sem);
598 ptlrpc_invalidate_import(imp);
603 /* use server style - class_disconnect should be always called for
605 err = class_disconnect(exp);
609 cfs_up_write(&cli->cl_sem);
614 #ifdef HAVE_SERVER_SUPPORT
615 int server_disconnect_export(struct obd_export *exp)
620 /* Disconnect early so that clients can't keep using export */
621 rc = class_disconnect(exp);
622 /* close import for avoid sending any requests */
623 if (exp->exp_imp_reverse)
624 ptlrpc_cleanup_imp(exp->exp_imp_reverse);
626 if (exp->exp_obd->obd_namespace != NULL)
627 ldlm_cancel_locks_for_export(exp);
629 /* complete all outstanding replies */
630 cfs_spin_lock(&exp->exp_lock);
631 while (!cfs_list_empty(&exp->exp_outstanding_replies)) {
632 struct ptlrpc_reply_state *rs =
633 cfs_list_entry(exp->exp_outstanding_replies.next,
634 struct ptlrpc_reply_state, rs_exp_list);
635 struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
637 cfs_spin_lock(&svcpt->scp_rep_lock);
639 cfs_list_del_init(&rs->rs_exp_list);
640 cfs_spin_lock(&rs->rs_lock);
641 ptlrpc_schedule_difficult_reply(rs);
642 cfs_spin_unlock(&rs->rs_lock);
644 cfs_spin_unlock(&svcpt->scp_rep_lock);
646 cfs_spin_unlock(&exp->exp_lock);
651 /* --------------------------------------------------------------------------
652 * from old lib/target.c
653 * -------------------------------------------------------------------------- */
655 static int target_handle_reconnect(struct lustre_handle *conn,
656 struct obd_export *exp,
657 struct obd_uuid *cluuid)
661 if (exp->exp_connection && exp->exp_imp_reverse) {
662 struct lustre_handle *hdl;
663 struct obd_device *target;
665 hdl = &exp->exp_imp_reverse->imp_remote_handle;
666 target = exp->exp_obd;
668 /* Might be a re-connect after a partition. */
669 if (!memcmp(&conn->cookie, &hdl->cookie, sizeof conn->cookie)) {
670 if (target->obd_recovering) {
671 int timeout = cfs_duration_sec(cfs_time_sub(
673 &target->obd_recovery_timer),
674 cfs_time_current()));
676 LCONSOLE_WARN("%s: Client %s (at %s) reconnect"
677 "ing, waiting for %d clients in recov"
678 "ery for %d:%.02d\n", target->obd_name,
679 obd_uuid2str(&exp->exp_client_uuid),
680 obd_export_nid2str(exp),
681 target->obd_max_recoverable_clients,
682 timeout / 60, timeout % 60);
684 LCONSOLE_WARN("%s: Client %s (at %s) "
685 "reconnecting\n", target->obd_name,
686 obd_uuid2str(&exp->exp_client_uuid),
687 obd_export_nid2str(exp));
690 conn->cookie = exp->exp_handle.h_cookie;
691 /* target_handle_connect() treats EALREADY and
692 * -EALREADY differently. EALREADY means we are
693 * doing a valid reconnect from the same client. */
696 LCONSOLE_WARN("%s: already connected client %s (at %s) "
697 "with handle "LPX64". Rejecting client "
698 "with the same UUID trying to reconnect "
699 "with handle "LPX64"\n", target->obd_name,
700 obd_uuid2str(&exp->exp_client_uuid),
701 obd_export_nid2str(exp),
702 hdl->cookie, conn->cookie);
703 memset(conn, 0, sizeof *conn);
704 /* target_handle_connect() treats EALREADY and
705 * -EALREADY differently. -EALREADY is an error
706 * (same UUID, different handle). */
711 conn->cookie = exp->exp_handle.h_cookie;
712 CDEBUG(D_HA, "connect export for UUID '%s' at %p, cookie "LPX64"\n",
713 cluuid->uuid, exp, conn->cookie);
717 void target_client_add_cb(struct obd_device *obd, __u64 transno, void *cb_data,
720 struct obd_export *exp = cb_data;
722 CDEBUG(D_RPCTRACE, "%s: committing for initial connect of %s\n",
723 obd->obd_name, exp->exp_client_uuid.uuid);
725 cfs_spin_lock(&exp->exp_lock);
726 exp->exp_need_sync = 0;
727 cfs_spin_unlock(&exp->exp_lock);
728 class_export_cb_put(exp);
730 EXPORT_SYMBOL(target_client_add_cb);
734 check_and_start_recovery_timer(struct obd_device *obd,
735 struct ptlrpc_request *req, int new_client);
738 check_and_start_recovery_timer(struct obd_device *obd,
739 struct ptlrpc_request *req, int new_client)
744 int target_handle_connect(struct ptlrpc_request *req)
746 struct obd_device *target = NULL, *targref = NULL;
747 struct obd_export *export = NULL;
748 struct obd_import *revimp;
749 struct obd_import *tmp_imp = NULL;
750 struct lustre_handle conn;
751 struct lustre_handle *tmp;
752 struct obd_uuid tgtuuid;
753 struct obd_uuid cluuid;
754 struct obd_uuid remote_uuid;
759 bool mds_conn = false, lw_client = false;
760 struct obd_connect_data *data, *tmpdata;
762 lnet_nid_t *client_nid = NULL;
765 OBD_RACE(OBD_FAIL_TGT_CONN_RACE);
767 str = req_capsule_client_get(&req->rq_pill, &RMF_TGTUUID);
769 DEBUG_REQ(D_ERROR, req, "bad target UUID for connect");
770 GOTO(out, rc = -EINVAL);
773 obd_str2uuid(&tgtuuid, str);
774 target = class_uuid2obd(&tgtuuid);
776 target = class_name2obd(str);
779 deuuidify(str, NULL, &target_start, &target_len);
780 LCONSOLE_ERROR_MSG(0x137, "UUID '%s' is not available for "
781 "connect (no target)\n", str);
782 GOTO(out, rc = -ENODEV);
785 cfs_spin_lock(&target->obd_dev_lock);
786 if (target->obd_stopping || !target->obd_set_up) {
787 cfs_spin_unlock(&target->obd_dev_lock);
789 deuuidify(str, NULL, &target_start, &target_len);
790 LCONSOLE_ERROR_MSG(0x137, "%.*s: Not available for connect "
791 "from %s (%s)\n", target_len, target_start,
792 libcfs_nid2str(req->rq_peer.nid),
793 (target->obd_stopping ?
794 "stopping" : "not set up"));
795 GOTO(out, rc = -ENODEV);
798 if (target->obd_no_conn) {
799 cfs_spin_unlock(&target->obd_dev_lock);
801 LCONSOLE_WARN("%s: Temporarily refusing client connection "
802 "from %s\n", target->obd_name,
803 libcfs_nid2str(req->rq_peer.nid));
804 GOTO(out, rc = -EAGAIN);
807 /* Make sure the target isn't cleaned up while we're here. Yes,
808 there's still a race between the above check and our incref here.
809 Really, class_uuid2obd should take the ref. */
810 targref = class_incref(target, __FUNCTION__, cfs_current());
812 target->obd_conn_inprogress++;
813 cfs_spin_unlock(&target->obd_dev_lock);
815 str = req_capsule_client_get(&req->rq_pill, &RMF_CLUUID);
817 DEBUG_REQ(D_ERROR, req, "bad client UUID for connect");
818 GOTO(out, rc = -EINVAL);
821 obd_str2uuid(&cluuid, str);
823 /* XXX extract a nettype and format accordingly */
824 switch (sizeof(lnet_nid_t)) {
825 /* NB the casts only avoid compiler warnings */
827 snprintf(remote_uuid.uuid, sizeof remote_uuid,
828 "NET_"LPX64"_UUID", (__u64)req->rq_peer.nid);
831 snprintf(remote_uuid.uuid, sizeof remote_uuid,
832 "NET_%x_UUID", (__u32)req->rq_peer.nid);
838 tmp = req_capsule_client_get(&req->rq_pill, &RMF_CONN);
840 GOTO(out, rc = -EPROTO);
844 size = req_capsule_get_size(&req->rq_pill, &RMF_CONNECT_DATA,
846 data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
848 GOTO(out, rc = -EPROTO);
850 rc = req_capsule_server_pack(&req->rq_pill);
854 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
856 DEBUG_REQ(D_WARNING, req, "Refusing old (unversioned) "
857 "libclient connection attempt");
858 GOTO(out, rc = -EPROTO);
859 } else if (data->ocd_version < LUSTRE_VERSION_CODE -
860 LUSTRE_VERSION_ALLOWED_OFFSET ||
861 data->ocd_version > LUSTRE_VERSION_CODE +
862 LUSTRE_VERSION_ALLOWED_OFFSET) {
863 DEBUG_REQ(D_WARNING, req, "Refusing %s (%d.%d.%d.%d) "
864 "libclient connection attempt",
865 data->ocd_version < LUSTRE_VERSION_CODE ?
867 OBD_OCD_VERSION_MAJOR(data->ocd_version),
868 OBD_OCD_VERSION_MINOR(data->ocd_version),
869 OBD_OCD_VERSION_PATCH(data->ocd_version),
870 OBD_OCD_VERSION_FIX(data->ocd_version));
871 data = req_capsule_server_sized_get(&req->rq_pill,
873 offsetof(typeof(*data), ocd_version) +
874 sizeof(data->ocd_version));
876 data->ocd_connect_flags = OBD_CONNECT_VERSION;
877 data->ocd_version = LUSTRE_VERSION_CODE;
879 GOTO(out, rc = -EPROTO);
883 if ((lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_INITIAL) &&
884 (data->ocd_connect_flags & OBD_CONNECT_MDS))
887 if ((data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) != 0)
890 /* lctl gets a backstage, all-access pass. */
891 if (obd_uuid_equals(&cluuid, &target->obd_uuid))
892 goto dont_check_exports;
894 export = cfs_hash_lookup(target->obd_uuid_hash, &cluuid);
898 /* we've found an export in the hash */
900 cfs_spin_lock(&export->exp_lock);
902 if (export->exp_connecting) { /* bug 9635, et. al. */
903 cfs_spin_unlock(&export->exp_lock);
904 LCONSOLE_WARN("%s: Export %p already connecting from %s\n",
905 export->exp_obd->obd_name, export,
906 libcfs_nid2str(req->rq_peer.nid));
907 class_export_put(export);
910 } else if (mds_conn && export->exp_connection) {
911 cfs_spin_unlock(&export->exp_lock);
912 if (req->rq_peer.nid != export->exp_connection->c_peer.nid)
913 /* mds reconnected after failover */
914 LCONSOLE_WARN("%s: Received MDS connection from "
915 "%s, removing former export from %s\n",
916 target->obd_name, libcfs_nid2str(req->rq_peer.nid),
917 libcfs_nid2str(export->exp_connection->c_peer.nid));
919 /* new mds connection from the same nid */
920 LCONSOLE_WARN("%s: Received new MDS connection from "
921 "%s, removing former export from same NID\n",
922 target->obd_name, libcfs_nid2str(req->rq_peer.nid));
923 class_fail_export(export);
924 class_export_put(export);
927 } else if (export->exp_connection != NULL &&
928 req->rq_peer.nid != export->exp_connection->c_peer.nid &&
929 (lustre_msg_get_op_flags(req->rq_reqmsg) &
930 MSG_CONNECT_INITIAL)) {
931 cfs_spin_unlock(&export->exp_lock);
932 /* in mds failover we have static uuid but nid can be
934 LCONSOLE_WARN("%s: Client %s seen on new nid %s when "
935 "existing nid %s is already connected\n",
936 target->obd_name, cluuid.uuid,
937 libcfs_nid2str(req->rq_peer.nid),
939 export->exp_connection->c_peer.nid));
941 class_export_put(export);
944 export->exp_connecting = 1;
945 cfs_spin_unlock(&export->exp_lock);
946 LASSERT(export->exp_obd == target);
948 rc = target_handle_reconnect(&conn, export, &cluuid);
951 /* If we found an export, we already unlocked. */
954 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_CONNECT, 2 * obd_timeout);
955 } else if (req->rq_export == NULL &&
956 cfs_atomic_read(&export->exp_rpc_count) > 0) {
957 LCONSOLE_WARN("%s: Client %s (at %s) refused connection, "
958 "still busy with %d references\n",
959 target->obd_name, cluuid.uuid,
960 libcfs_nid2str(req->rq_peer.nid),
961 cfs_atomic_read(&export->exp_refcount));
962 GOTO(out, rc = -EBUSY);
963 } else if (req->rq_export != NULL &&
964 (cfs_atomic_read(&export->exp_rpc_count) > 1)) {
965 /* the current connect rpc has increased exp_rpc_count */
966 LCONSOLE_WARN("%s: Client %s (at %s) refused reconnection, "
967 "still busy with %d active RPCs\n",
968 target->obd_name, cluuid.uuid,
969 libcfs_nid2str(req->rq_peer.nid),
970 cfs_atomic_read(&export->exp_rpc_count) - 1);
971 cfs_spin_lock(&export->exp_lock);
972 if (req->rq_export->exp_conn_cnt <
973 lustre_msg_get_conn_cnt(req->rq_reqmsg))
974 /* try to abort active requests */
975 req->rq_export->exp_abort_active_req = 1;
976 cfs_spin_unlock(&export->exp_lock);
977 GOTO(out, rc = -EBUSY);
978 } else if (lustre_msg_get_conn_cnt(req->rq_reqmsg) == 1) {
979 if (!strstr(cluuid.uuid, "mdt"))
980 LCONSOLE_WARN("%s: Rejecting reconnect from the "
981 "known client %s (at %s) because it "
982 "is indicating it is a new client",
983 target->obd_name, cluuid.uuid,
984 libcfs_nid2str(req->rq_peer.nid));
985 GOTO(out, rc = -EALREADY);
987 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_RECONNECT, 2 * obd_timeout);
994 CDEBUG(D_HA, "%s: connection from %s@%s %st"LPU64" exp %p cur %ld last %ld\n",
995 target->obd_name, cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
996 target->obd_recovering ? "recovering/" : "", data->ocd_transno,
997 export, (long)cfs_time_current_sec(),
998 export ? (long)export->exp_last_request_time : 0);
1000 /* If this is the first time a client connects, reset the recovery
1001 * timer. Discard lightweight connections which might be local */
1002 if (!lw_client && rc == 0 && target->obd_recovering)
1003 check_and_start_recovery_timer(target, req, export == NULL);
1005 /* We want to handle EALREADY but *not* -EALREADY from
1006 * target_handle_reconnect(), return reconnection state in a flag */
1007 if (rc == EALREADY) {
1008 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
1014 /* Tell the client if we support replayable requests */
1015 if (target->obd_replayable)
1016 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
1017 client_nid = &req->rq_peer.nid;
1019 if (export == NULL) {
1020 /* allow lightweight connections during recovery */
1021 if (target->obd_recovering && !lw_client) {
1023 int c; /* connected */
1024 int i; /* in progress */
1027 c = cfs_atomic_read(&target->obd_connected_clients);
1028 i = cfs_atomic_read(&target->obd_lock_replay_clients);
1029 k = target->obd_max_recoverable_clients;
1030 t = cfs_timer_deadline(&target->obd_recovery_timer);
1031 t = cfs_time_sub(t, cfs_time_current());
1032 t = cfs_duration_sec(t);
1033 LCONSOLE_WARN("%s: Denying connection for new client "
1034 "%s (at %s), waiting for all %d known "
1035 "clients (%d recovered, %d in progress, "
1036 "and %d unseen) to recover in %d:%.02d\n",
1037 target->obd_name, cluuid.uuid,
1038 libcfs_nid2str(req->rq_peer.nid), k,
1039 c - i, i, k - c, (int)t / 60,
1044 rc = obd_connect(req->rq_svc_thread->t_env,
1045 &export, target, &cluuid, data,
1048 conn.cookie = export->exp_handle.h_cookie;
1051 rc = obd_reconnect(req->rq_svc_thread->t_env,
1052 export, target, &cluuid, data, client_nid);
1057 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 6, 50, 0)
1058 /* 2.2.0 clients always swab nidtbl entries due to a bug, so server
1059 * will do the swabbing for if the client is using the same endianness.
1061 * This fixup is version-limited, because we don't want to carry the
1062 * OBD_CONNECT_MNE_SWAB flag around forever, just so long as we need
1063 * interop with unpatched 2.2 clients. For newer clients, servers
1064 * will never do MNE swabbing, let the client handle that. LU-1644 */
1065 export->exp_need_mne_swab = !ptlrpc_req_need_swab(req) &&
1066 !(data->ocd_connect_flags & OBD_CONNECT_MNE_SWAB);
1068 #warning "LU-1644: Remove old OBD_CONNECT_MNE_SWAB fixup and exp_need_mne_swab"
1071 LASSERT(target->u.obt.obt_magic == OBT_MAGIC);
1072 data->ocd_instance = target->u.obt.obt_instance;
1074 /* Return only the parts of obd_connect_data that we understand, so the
1075 * client knows that we don't understand the rest. */
1077 tmpsize = req_capsule_get_size(&req->rq_pill, &RMF_CONNECT_DATA,
1079 tmpdata = req_capsule_server_get(&req->rq_pill,
1081 /* Don't use struct assignment here, because the client reply
1082 * buffer may be smaller/larger than the local struct
1083 * obd_connect_data. */
1084 memcpy(tmpdata, data, min(tmpsize, size));
1087 /* If all else goes well, this is our RPC return code. */
1090 lustre_msg_set_handle(req->rq_repmsg, &conn);
1092 /* If the client and the server are the same node, we will already
1093 * have an export that really points to the client's DLM export,
1094 * because we have a shared handles table.
1096 * XXX this will go away when shaver stops sending the "connect" handle
1097 * in the real "remote handle" field of the request --phik 24 Apr 2003
1099 if (req->rq_export != NULL)
1100 class_export_put(req->rq_export);
1102 /* request takes one export refcount */
1103 req->rq_export = class_export_get(export);
1105 cfs_spin_lock(&export->exp_lock);
1106 if (export->exp_conn_cnt >= lustre_msg_get_conn_cnt(req->rq_reqmsg)) {
1107 cfs_spin_unlock(&export->exp_lock);
1108 CDEBUG(D_RPCTRACE, "%s: %s already connected at higher "
1109 "conn_cnt: %d > %d\n",
1110 cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
1111 export->exp_conn_cnt,
1112 lustre_msg_get_conn_cnt(req->rq_reqmsg));
1114 GOTO(out, rc = -EALREADY);
1116 LASSERT(lustre_msg_get_conn_cnt(req->rq_reqmsg) > 0);
1117 export->exp_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
1118 export->exp_abort_active_req = 0;
1120 /* request from liblustre? Don't evict it for not pinging. */
1121 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
1122 export->exp_libclient = 1;
1123 cfs_spin_unlock(&export->exp_lock);
1125 cfs_spin_lock(&target->obd_dev_lock);
1126 cfs_list_del_init(&export->exp_obd_chain_timed);
1127 cfs_spin_unlock(&target->obd_dev_lock);
1129 cfs_spin_unlock(&export->exp_lock);
1132 if (export->exp_connection != NULL) {
1133 /* Check to see if connection came from another NID */
1134 if ((export->exp_connection->c_peer.nid != req->rq_peer.nid) &&
1135 !cfs_hlist_unhashed(&export->exp_nid_hash))
1136 cfs_hash_del(export->exp_obd->obd_nid_hash,
1137 &export->exp_connection->c_peer.nid,
1138 &export->exp_nid_hash);
1140 ptlrpc_connection_put(export->exp_connection);
1143 export->exp_connection = ptlrpc_connection_get(req->rq_peer,
1146 if (cfs_hlist_unhashed(&export->exp_nid_hash)) {
1147 cfs_hash_add(export->exp_obd->obd_nid_hash,
1148 &export->exp_connection->c_peer.nid,
1149 &export->exp_nid_hash);
1152 if (target->obd_recovering && !export->exp_in_recovery && !lw_client) {
1154 __u64 transno = data->ocd_transno;
1156 cfs_spin_lock(&export->exp_lock);
1157 /* possible race with class_disconnect_stale_exports,
1158 * export may be already in the eviction process */
1159 if (export->exp_failed) {
1160 cfs_spin_unlock(&export->exp_lock);
1161 GOTO(out, rc = -ENODEV);
1163 export->exp_in_recovery = 1;
1164 export->exp_req_replay_needed = 1;
1165 export->exp_lock_replay_needed = 1;
1166 cfs_spin_unlock(&export->exp_lock);
1168 has_transno = !!(lustre_msg_get_op_flags(req->rq_reqmsg) &
1169 MSG_CONNECT_TRANSNO);
1170 if (has_transno && transno == 0)
1171 CWARN("Connect with zero transno!\n");
1173 if (has_transno && transno > 0 &&
1174 transno < target->obd_next_recovery_transno &&
1175 transno > target->obd_last_committed) {
1176 /* another way is to use cmpxchg() so it will be
1178 cfs_spin_lock(&target->obd_recovery_task_lock);
1179 if (transno < target->obd_next_recovery_transno)
1180 target->obd_next_recovery_transno = transno;
1181 cfs_spin_unlock(&target->obd_recovery_task_lock);
1184 cfs_atomic_inc(&target->obd_req_replay_clients);
1185 cfs_atomic_inc(&target->obd_lock_replay_clients);
1186 if (cfs_atomic_inc_return(&target->obd_connected_clients) ==
1187 target->obd_max_recoverable_clients)
1188 cfs_waitq_signal(&target->obd_next_transno_waitq);
1191 /* Tell the client we're in recovery, when client is involved in it. */
1192 if (target->obd_recovering && !lw_client)
1193 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
1195 tmp = req_capsule_client_get(&req->rq_pill, &RMF_CONN);
1198 /* for the rest part, we return -ENOTCONN in case of errors
1199 * in order to let client initialize connection again.
1201 revimp = class_new_import(target);
1202 if (revimp == NULL) {
1203 CERROR("fail to alloc new reverse import.\n");
1204 GOTO(out, rc = -ENOTCONN);
1207 cfs_spin_lock(&export->exp_lock);
1208 if (export->exp_imp_reverse != NULL) {
1209 /* destroyed import can be still referenced in ctxt */
1210 obd_set_info_async(req->rq_svc_thread->t_env, export,
1211 sizeof(KEY_REVIMP_UPD), KEY_REVIMP_UPD,
1213 tmp_imp = export->exp_imp_reverse;
1215 export->exp_imp_reverse = revimp;
1216 cfs_spin_unlock(&export->exp_lock);
1218 revimp->imp_connection = ptlrpc_connection_addref(export->exp_connection);
1219 revimp->imp_client = &export->exp_obd->obd_ldlm_client;
1220 revimp->imp_remote_handle = conn;
1221 revimp->imp_dlm_fake = 1;
1222 revimp->imp_state = LUSTRE_IMP_FULL;
1224 /* unknown versions will be caught in
1225 * ptlrpc_handle_server_req_in->lustre_unpack_msg() */
1226 revimp->imp_msg_magic = req->rq_reqmsg->lm_magic;
1228 if ((export->exp_connect_flags & OBD_CONNECT_AT) &&
1229 (revimp->imp_msg_magic != LUSTRE_MSG_MAGIC_V1))
1230 revimp->imp_msghdr_flags |= MSGHDR_AT_SUPPORT;
1232 revimp->imp_msghdr_flags &= ~MSGHDR_AT_SUPPORT;
1234 if ((export->exp_connect_flags & OBD_CONNECT_FULL20) &&
1235 (revimp->imp_msg_magic != LUSTRE_MSG_MAGIC_V1))
1236 revimp->imp_msghdr_flags |= MSGHDR_CKSUM_INCOMPAT18;
1238 revimp->imp_msghdr_flags &= ~MSGHDR_CKSUM_INCOMPAT18;
1240 rc = sptlrpc_import_sec_adapt(revimp, req->rq_svc_ctx, &req->rq_flvr);
1242 CERROR("Failed to get sec for reverse import: %d\n", rc);
1243 cfs_spin_lock(&export->exp_lock);
1244 export->exp_imp_reverse = NULL;
1245 cfs_spin_unlock(&export->exp_lock);
1246 class_destroy_import(revimp);
1249 class_import_put(revimp);
1252 if (tmp_imp != NULL)
1253 client_destroy_import(tmp_imp);
1255 cfs_spin_lock(&export->exp_lock);
1256 export->exp_connecting = 0;
1257 cfs_spin_unlock(&export->exp_lock);
1259 class_export_put(export);
1262 cfs_spin_lock(&target->obd_dev_lock);
1263 target->obd_conn_inprogress--;
1264 cfs_spin_unlock(&target->obd_dev_lock);
1266 class_decref(targref, __FUNCTION__, cfs_current());
1269 req->rq_status = rc;
1273 int target_handle_disconnect(struct ptlrpc_request *req)
1278 rc = req_capsule_server_pack(&req->rq_pill);
1282 /* keep the rq_export around so we can send the reply */
1283 req->rq_status = obd_disconnect(class_export_get(req->rq_export));
1288 void target_destroy_export(struct obd_export *exp)
1290 struct obd_import *imp = NULL;
1291 /* exports created from last_rcvd data, and "fake"
1292 exports created by lctl don't have an import */
1293 cfs_spin_lock(&exp->exp_lock);
1294 if (exp->exp_imp_reverse != NULL) {
1295 imp = exp->exp_imp_reverse;
1296 exp->exp_imp_reverse = NULL;
1298 cfs_spin_unlock(&exp->exp_lock);
1300 client_destroy_import(imp);
1302 LASSERT_ATOMIC_ZERO(&exp->exp_locks_count);
1303 LASSERT_ATOMIC_ZERO(&exp->exp_rpc_count);
1304 LASSERT_ATOMIC_ZERO(&exp->exp_cb_count);
1305 LASSERT_ATOMIC_ZERO(&exp->exp_replay_count);
1309 * Recovery functions
1311 static void target_request_copy_get(struct ptlrpc_request *req)
1313 class_export_rpc_get(req->rq_export);
1314 LASSERT(cfs_list_empty(&req->rq_list));
1315 CFS_INIT_LIST_HEAD(&req->rq_replay_list);
1317 /* increase refcount to keep request in queue */
1318 cfs_atomic_inc(&req->rq_refcount);
1319 /** let export know it has replays to be handled */
1320 cfs_atomic_inc(&req->rq_export->exp_replay_count);
1323 static void target_request_copy_put(struct ptlrpc_request *req)
1325 LASSERT(cfs_list_empty(&req->rq_replay_list));
1326 LASSERT_ATOMIC_POS(&req->rq_export->exp_replay_count);
1328 cfs_atomic_dec(&req->rq_export->exp_replay_count);
1329 class_export_rpc_put(req->rq_export);
1330 ptlrpc_server_drop_request(req);
1333 static int target_exp_enqueue_req_replay(struct ptlrpc_request *req)
1335 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
1336 struct obd_export *exp = req->rq_export;
1337 struct ptlrpc_request *reqiter;
1342 cfs_spin_lock(&exp->exp_lock);
1343 cfs_list_for_each_entry(reqiter, &exp->exp_req_replay_queue,
1345 if (lustre_msg_get_transno(reqiter->rq_reqmsg) == transno) {
1352 /* we expect it with RESENT and REPLAY flags */
1353 if ((lustre_msg_get_flags(req->rq_reqmsg) &
1354 (MSG_RESENT | MSG_REPLAY)) != (MSG_RESENT | MSG_REPLAY))
1355 CERROR("invalid flags %x of resent replay\n",
1356 lustre_msg_get_flags(req->rq_reqmsg));
1358 cfs_list_add_tail(&req->rq_replay_list,
1359 &exp->exp_req_replay_queue);
1362 cfs_spin_unlock(&exp->exp_lock);
1366 static void target_exp_dequeue_req_replay(struct ptlrpc_request *req)
1368 LASSERT(!cfs_list_empty(&req->rq_replay_list));
1369 LASSERT(req->rq_export);
1371 cfs_spin_lock(&req->rq_export->exp_lock);
1372 cfs_list_del_init(&req->rq_replay_list);
1373 cfs_spin_unlock(&req->rq_export->exp_lock);
1377 static void target_finish_recovery(struct obd_device *obd)
1381 /* only log a recovery message when recovery has occurred */
1382 if (obd->obd_recovery_start) {
1383 time_t elapsed_time = max_t(time_t, 1, cfs_time_current_sec() -
1384 obd->obd_recovery_start);
1385 LCONSOLE_INFO("%s: Recovery over after %d:%.02d, of %d clients "
1386 "%d recovered and %d %s evicted.\n", obd->obd_name,
1387 (int)elapsed_time / 60, (int)elapsed_time % 60,
1388 obd->obd_max_recoverable_clients,
1389 cfs_atomic_read(&obd->obd_connected_clients),
1390 obd->obd_stale_clients,
1391 obd->obd_stale_clients == 1 ? "was" : "were");
1394 ldlm_reprocess_all_ns(obd->obd_namespace);
1395 cfs_spin_lock(&obd->obd_recovery_task_lock);
1396 if (!cfs_list_empty(&obd->obd_req_replay_queue) ||
1397 !cfs_list_empty(&obd->obd_lock_replay_queue) ||
1398 !cfs_list_empty(&obd->obd_final_req_queue)) {
1399 CERROR("%s: Recovery queues ( %s%s%s) are not empty\n",
1401 cfs_list_empty(&obd->obd_req_replay_queue) ? "" : "req ",
1402 cfs_list_empty(&obd->obd_lock_replay_queue) ? \
1404 cfs_list_empty(&obd->obd_final_req_queue) ? \
1406 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1409 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1411 obd->obd_recovery_end = cfs_time_current_sec();
1413 /* when recovery finished, cleanup orphans on mds and ost */
1414 if (OBT(obd) && OBP(obd, postrecov)) {
1415 int rc = OBP(obd, postrecov)(obd);
1417 LCONSOLE_WARN("%s: Post recovery failed, rc %d\n",
1423 static void abort_req_replay_queue(struct obd_device *obd)
1425 struct ptlrpc_request *req, *n;
1426 cfs_list_t abort_list;
1428 CFS_INIT_LIST_HEAD(&abort_list);
1429 cfs_spin_lock(&obd->obd_recovery_task_lock);
1430 cfs_list_splice_init(&obd->obd_req_replay_queue, &abort_list);
1431 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1432 cfs_list_for_each_entry_safe(req, n, &abort_list, rq_list) {
1433 DEBUG_REQ(D_WARNING, req, "aborted:");
1434 req->rq_status = -ENOTCONN;
1435 if (ptlrpc_error(req)) {
1436 DEBUG_REQ(D_ERROR, req,
1437 "failed abort_req_reply; skipping");
1439 target_exp_dequeue_req_replay(req);
1440 target_request_copy_put(req);
1444 static void abort_lock_replay_queue(struct obd_device *obd)
1446 struct ptlrpc_request *req, *n;
1447 cfs_list_t abort_list;
1449 CFS_INIT_LIST_HEAD(&abort_list);
1450 cfs_spin_lock(&obd->obd_recovery_task_lock);
1451 cfs_list_splice_init(&obd->obd_lock_replay_queue, &abort_list);
1452 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1453 cfs_list_for_each_entry_safe(req, n, &abort_list, rq_list){
1454 DEBUG_REQ(D_ERROR, req, "aborted:");
1455 req->rq_status = -ENOTCONN;
1456 if (ptlrpc_error(req)) {
1457 DEBUG_REQ(D_ERROR, req,
1458 "failed abort_lock_reply; skipping");
1460 target_request_copy_put(req);
1464 /* Called from a cleanup function if the device is being cleaned up
1465 forcefully. The exports should all have been disconnected already,
1466 the only thing left to do is
1467 - clear the recovery flags
1469 - free queued requests and replies, but don't send replies
1470 Because the obd_stopping flag is set, no new requests should be received.
1473 void target_cleanup_recovery(struct obd_device *obd)
1475 struct ptlrpc_request *req, *n;
1476 cfs_list_t clean_list;
1479 CFS_INIT_LIST_HEAD(&clean_list);
1480 cfs_spin_lock(&obd->obd_dev_lock);
1481 if (!obd->obd_recovering) {
1482 cfs_spin_unlock(&obd->obd_dev_lock);
1486 obd->obd_recovering = obd->obd_abort_recovery = 0;
1487 cfs_spin_unlock(&obd->obd_dev_lock);
1489 cfs_spin_lock(&obd->obd_recovery_task_lock);
1490 target_cancel_recovery_timer(obd);
1491 cfs_list_splice_init(&obd->obd_req_replay_queue, &clean_list);
1492 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1494 cfs_list_for_each_entry_safe(req, n, &clean_list, rq_list) {
1495 LASSERT(req->rq_reply_state == 0);
1496 target_exp_dequeue_req_replay(req);
1497 target_request_copy_put(req);
1500 cfs_spin_lock(&obd->obd_recovery_task_lock);
1501 cfs_list_splice_init(&obd->obd_lock_replay_queue, &clean_list);
1502 cfs_list_splice_init(&obd->obd_final_req_queue, &clean_list);
1503 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1505 cfs_list_for_each_entry_safe(req, n, &clean_list, rq_list){
1506 LASSERT(req->rq_reply_state == 0);
1507 target_request_copy_put(req);
1513 /* obd_recovery_task_lock should be held */
1514 void target_cancel_recovery_timer(struct obd_device *obd)
1516 CDEBUG(D_HA, "%s: cancel recovery timer\n", obd->obd_name);
1517 cfs_timer_disarm(&obd->obd_recovery_timer);
1520 static void target_start_recovery_timer(struct obd_device *obd)
1522 if (obd->obd_recovery_start != 0)
1525 cfs_spin_lock(&obd->obd_dev_lock);
1526 if (!obd->obd_recovering || obd->obd_abort_recovery) {
1527 cfs_spin_unlock(&obd->obd_dev_lock);
1531 LASSERT(obd->obd_recovery_timeout != 0);
1533 if (obd->obd_recovery_start != 0) {
1534 cfs_spin_unlock(&obd->obd_dev_lock);
1538 cfs_timer_arm(&obd->obd_recovery_timer,
1539 cfs_time_shift(obd->obd_recovery_timeout));
1540 obd->obd_recovery_start = cfs_time_current_sec();
1541 cfs_spin_unlock(&obd->obd_dev_lock);
1543 LCONSOLE_WARN("%s: Will be in recovery for at least %d:%.02d, "
1544 "or until %d client%s reconnect%s\n",
1546 obd->obd_recovery_timeout / 60,
1547 obd->obd_recovery_timeout % 60,
1548 obd->obd_max_recoverable_clients,
1549 (obd->obd_max_recoverable_clients == 1) ? "" : "s",
1550 (obd->obd_max_recoverable_clients == 1) ? "s": "");
1554 * extend recovery window.
1556 * if @extend is true, extend recovery window to have @drt remaining at least;
1557 * otherwise, make sure the recovery timeout value is not less than @drt.
1559 static void extend_recovery_timer(struct obd_device *obd, int drt, bool extend)
1563 cfs_duration_t left;
1566 cfs_spin_lock(&obd->obd_dev_lock);
1567 if (!obd->obd_recovering || obd->obd_abort_recovery) {
1568 cfs_spin_unlock(&obd->obd_dev_lock);
1571 LASSERT(obd->obd_recovery_start != 0);
1573 now = cfs_time_current_sec();
1574 to = obd->obd_recovery_timeout;
1575 end = obd->obd_recovery_start + to;
1576 left = cfs_time_sub(end, now);
1578 if (extend && (drt > left)) {
1580 } else if (!extend && (drt > to)) {
1582 /* reduce drt by already passed time */
1583 drt -= obd->obd_recovery_timeout - left;
1586 if (to > obd->obd_recovery_time_hard)
1587 to = obd->obd_recovery_time_hard;
1588 if (obd->obd_recovery_timeout < to) {
1589 obd->obd_recovery_timeout = to;
1590 cfs_timer_arm(&obd->obd_recovery_timer,
1591 cfs_time_shift(drt));
1593 cfs_spin_unlock(&obd->obd_dev_lock);
1595 CDEBUG(D_HA, "%s: recovery timer will expire in %u seconds\n",
1596 obd->obd_name, (unsigned)drt);
1599 /* Reset the timer with each new client connection */
1601 * This timer is actually reconnect_timer, which is for making sure
1602 * the total recovery window is at least as big as my reconnect
1603 * attempt timing. So the initial recovery time_out will be set to
1604 * OBD_RECOVERY_FACTOR * obd_timeout. If the timeout coming
1605 * from client is bigger than this, then the recovery time_out will
1606 * be extended to make sure the client could be reconnected, in the
1607 * process, the timeout from the new client should be ignored.
1611 check_and_start_recovery_timer(struct obd_device *obd,
1612 struct ptlrpc_request *req,
1615 int service_time = lustre_msg_get_service_time(req->rq_reqmsg);
1616 struct obd_device_target *obt = &obd->u.obt;
1617 struct lustre_sb_info *lsi;
1619 if (!new_client && service_time)
1620 /* Teach server about old server's estimates, as first guess
1621 * at how long new requests will take. */
1622 at_measured(&req->rq_rqbd->rqbd_svcpt->scp_at_estimate,
1625 target_start_recovery_timer(obd);
1627 /* convert the service time to rpc timeout,
1628 * reuse service_time to limit stack usage */
1629 service_time = at_est2timeout(service_time);
1631 /* We expect other clients to timeout within service_time, then try
1632 * to reconnect, then try the failover server. The max delay between
1633 * connect attempts is SWITCH_MAX + SWITCH_INC + INITIAL */
1634 service_time += 2 * INITIAL_CONNECT_TIMEOUT;
1636 LASSERT(obt->obt_magic == OBT_MAGIC);
1637 lsi = s2lsi(obt->obt_sb);
1638 if (!(lsi->lsi_flags | LDD_F_IR_CAPABLE))
1639 service_time += 2 * (CONNECTION_SWITCH_MAX +
1640 CONNECTION_SWITCH_INC);
1641 if (service_time > obd->obd_recovery_timeout && !new_client)
1642 extend_recovery_timer(obd, service_time, false);
1645 /** Health checking routines */
1646 static inline int exp_connect_healthy(struct obd_export *exp)
1648 return (exp->exp_in_recovery);
1651 /** if export done req_replay or has replay in queue */
1652 static inline int exp_req_replay_healthy(struct obd_export *exp)
1654 return (!exp->exp_req_replay_needed ||
1655 cfs_atomic_read(&exp->exp_replay_count) > 0);
1657 /** if export done lock_replay or has replay in queue */
1658 static inline int exp_lock_replay_healthy(struct obd_export *exp)
1660 return (!exp->exp_lock_replay_needed ||
1661 cfs_atomic_read(&exp->exp_replay_count) > 0);
1664 static inline int exp_vbr_healthy(struct obd_export *exp)
1666 return (!exp->exp_vbr_failed);
1669 static inline int exp_finished(struct obd_export *exp)
1671 return (exp->exp_in_recovery && !exp->exp_lock_replay_needed);
1674 /** Checking routines for recovery */
1675 static int check_for_clients(struct obd_device *obd)
1677 unsigned int clnts = cfs_atomic_read(&obd->obd_connected_clients);
1679 if (obd->obd_abort_recovery || obd->obd_recovery_expired)
1681 LASSERT(clnts <= obd->obd_max_recoverable_clients);
1682 if (obd->obd_no_conn == 0 &&
1683 clnts + obd->obd_stale_clients == obd->obd_max_recoverable_clients)
1688 static int check_for_next_transno(struct obd_device *obd)
1690 struct ptlrpc_request *req = NULL;
1691 int wake_up = 0, connected, completed, queue_len;
1692 __u64 next_transno, req_transno;
1695 cfs_spin_lock(&obd->obd_recovery_task_lock);
1696 if (!cfs_list_empty(&obd->obd_req_replay_queue)) {
1697 req = cfs_list_entry(obd->obd_req_replay_queue.next,
1698 struct ptlrpc_request, rq_list);
1699 req_transno = lustre_msg_get_transno(req->rq_reqmsg);
1704 connected = cfs_atomic_read(&obd->obd_connected_clients);
1705 completed = connected - cfs_atomic_read(&obd->obd_req_replay_clients);
1706 queue_len = obd->obd_requests_queued_for_recovery;
1707 next_transno = obd->obd_next_recovery_transno;
1709 CDEBUG(D_HA, "max: %d, connected: %d, completed: %d, queue_len: %d, "
1710 "req_transno: "LPU64", next_transno: "LPU64"\n",
1711 obd->obd_max_recoverable_clients, connected, completed,
1712 queue_len, req_transno, next_transno);
1714 if (obd->obd_abort_recovery) {
1715 CDEBUG(D_HA, "waking for aborted recovery\n");
1717 } else if (obd->obd_recovery_expired) {
1718 CDEBUG(D_HA, "waking for expired recovery\n");
1720 } else if (cfs_atomic_read(&obd->obd_req_replay_clients) == 0) {
1721 CDEBUG(D_HA, "waking for completed recovery\n");
1723 } else if (req_transno == next_transno) {
1724 CDEBUG(D_HA, "waking for next ("LPD64")\n", next_transno);
1726 } else if (queue_len == cfs_atomic_read(&obd->obd_req_replay_clients)) {
1728 /** handle gaps occured due to lost reply or VBR */
1729 LASSERTF(req_transno >= next_transno,
1730 "req_transno: "LPU64", next_transno: "LPU64"\n",
1731 req_transno, next_transno);
1732 if (req_transno > obd->obd_last_committed &&
1733 !obd->obd_version_recov)
1736 "%s: waking for gap in transno, VBR is %s (skip: "
1737 LPD64", ql: %d, comp: %d, conn: %d, next: "LPD64
1738 ", last_committed: "LPD64")\n",
1739 obd->obd_name, obd->obd_version_recov ? "ON" : "OFF",
1740 next_transno, queue_len, completed, connected,
1741 req_transno, obd->obd_last_committed);
1742 obd->obd_next_recovery_transno = req_transno;
1744 } else if (OBD_FAIL_CHECK(OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS)) {
1745 CDEBUG(D_HA, "accepting transno gaps is explicitly allowed"
1746 " by fail_lock, waking up ("LPD64")\n", next_transno);
1747 obd->obd_next_recovery_transno = req_transno;
1750 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1754 static int check_for_next_lock(struct obd_device *obd)
1758 cfs_spin_lock(&obd->obd_recovery_task_lock);
1759 if (!cfs_list_empty(&obd->obd_lock_replay_queue)) {
1760 CDEBUG(D_HA, "waking for next lock\n");
1762 } else if (cfs_atomic_read(&obd->obd_lock_replay_clients) == 0) {
1763 CDEBUG(D_HA, "waking for completed lock replay\n");
1765 } else if (obd->obd_abort_recovery) {
1766 CDEBUG(D_HA, "waking for aborted recovery\n");
1768 } else if (obd->obd_recovery_expired) {
1769 CDEBUG(D_HA, "waking for expired recovery\n");
1772 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1778 * wait for recovery events,
1779 * check its status with help of check_routine
1780 * evict dead clients via health_check
1782 static int target_recovery_overseer(struct obd_device *obd,
1783 int (*check_routine)(struct obd_device *),
1784 int (*health_check)(struct obd_export *))
1787 cfs_wait_event(obd->obd_next_transno_waitq, check_routine(obd));
1788 if (obd->obd_abort_recovery) {
1789 CWARN("recovery is aborted, evict exports in recovery\n");
1790 /** evict exports which didn't finish recovery yet */
1791 class_disconnect_stale_exports(obd, exp_finished);
1793 } else if (obd->obd_recovery_expired) {
1794 obd->obd_recovery_expired = 0;
1795 /** If some clients died being recovered, evict them */
1796 LCONSOLE_WARN("%s: recovery is timed out, "
1797 "evict stale exports\n", obd->obd_name);
1798 /** evict cexports with no replay in queue, they are stalled */
1799 class_disconnect_stale_exports(obd, health_check);
1800 /** continue with VBR */
1801 cfs_spin_lock(&obd->obd_dev_lock);
1802 obd->obd_version_recov = 1;
1803 cfs_spin_unlock(&obd->obd_dev_lock);
1805 * reset timer, recovery will proceed with versions now,
1806 * timeout is set just to handle reconnection delays
1808 extend_recovery_timer(obd, RECONNECT_DELAY_MAX, true);
1809 /** Wait for recovery events again, after evicting bad clients */
1815 static struct ptlrpc_request *target_next_replay_req(struct obd_device *obd)
1817 struct ptlrpc_request *req = NULL;
1820 CDEBUG(D_HA, "Waiting for transno "LPD64"\n",
1821 obd->obd_next_recovery_transno);
1823 if (target_recovery_overseer(obd, check_for_next_transno,
1824 exp_req_replay_healthy)) {
1825 abort_req_replay_queue(obd);
1826 abort_lock_replay_queue(obd);
1829 cfs_spin_lock(&obd->obd_recovery_task_lock);
1830 if (!cfs_list_empty(&obd->obd_req_replay_queue)) {
1831 req = cfs_list_entry(obd->obd_req_replay_queue.next,
1832 struct ptlrpc_request, rq_list);
1833 cfs_list_del_init(&req->rq_list);
1834 obd->obd_requests_queued_for_recovery--;
1835 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1837 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1838 LASSERT(cfs_list_empty(&obd->obd_req_replay_queue));
1839 LASSERT(cfs_atomic_read(&obd->obd_req_replay_clients) == 0);
1840 /** evict exports failed VBR */
1841 class_disconnect_stale_exports(obd, exp_vbr_healthy);
1846 static struct ptlrpc_request *target_next_replay_lock(struct obd_device *obd)
1848 struct ptlrpc_request *req = NULL;
1850 CDEBUG(D_HA, "Waiting for lock\n");
1851 if (target_recovery_overseer(obd, check_for_next_lock,
1852 exp_lock_replay_healthy))
1853 abort_lock_replay_queue(obd);
1855 cfs_spin_lock(&obd->obd_recovery_task_lock);
1856 if (!cfs_list_empty(&obd->obd_lock_replay_queue)) {
1857 req = cfs_list_entry(obd->obd_lock_replay_queue.next,
1858 struct ptlrpc_request, rq_list);
1859 cfs_list_del_init(&req->rq_list);
1860 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1862 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1863 LASSERT(cfs_list_empty(&obd->obd_lock_replay_queue));
1864 LASSERT(cfs_atomic_read(&obd->obd_lock_replay_clients) == 0);
1865 /** evict exports failed VBR */
1866 class_disconnect_stale_exports(obd, exp_vbr_healthy);
1871 static struct ptlrpc_request *target_next_final_ping(struct obd_device *obd)
1873 struct ptlrpc_request *req = NULL;
1875 cfs_spin_lock(&obd->obd_recovery_task_lock);
1876 if (!cfs_list_empty(&obd->obd_final_req_queue)) {
1877 req = cfs_list_entry(obd->obd_final_req_queue.next,
1878 struct ptlrpc_request, rq_list);
1879 cfs_list_del_init(&req->rq_list);
1880 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1881 if (req->rq_export->exp_in_recovery) {
1882 cfs_spin_lock(&req->rq_export->exp_lock);
1883 req->rq_export->exp_in_recovery = 0;
1884 cfs_spin_unlock(&req->rq_export->exp_lock);
1887 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1892 static int handle_recovery_req(struct ptlrpc_thread *thread,
1893 struct ptlrpc_request *req,
1894 svc_handler_t handler)
1900 * export can be evicted during recovery, no need to handle replays for
1901 * it after that, discard such request silently
1903 if (req->rq_export->exp_disconnected)
1904 GOTO(reqcopy_put, rc = 0);
1906 rc = lu_context_init(&req->rq_recov_session, LCT_SESSION);
1908 CERROR("Failure to initialize session: %d\n", rc);
1909 GOTO(reqcopy_put, rc);
1912 req->rq_recov_session.lc_thread = thread;
1913 lu_context_enter(&req->rq_recov_session);
1914 req->rq_svc_thread = thread;
1915 req->rq_svc_thread->t_env->le_ses = &req->rq_recov_session;
1917 /* thread context */
1918 lu_context_enter(&thread->t_env->le_ctx);
1920 lu_context_exit(&thread->t_env->le_ctx);
1922 lu_context_exit(&req->rq_recov_session);
1923 lu_context_fini(&req->rq_recov_session);
1924 /* don't reset timer for final stage */
1925 if (!exp_finished(req->rq_export)) {
1926 int to = obd_timeout;
1929 * Add request timeout to the recovery time so next request from
1930 * this client may come in recovery time
1933 struct ptlrpc_service_part *svcpt;
1935 svcpt = req->rq_rqbd->rqbd_svcpt;
1936 /* If the server sent early reply for this request,
1937 * the client will recalculate the timeout according to
1938 * current server estimate service time, so we will
1939 * use the maxium timeout here for waiting the client
1940 * sending the next req */
1941 to = max((int)at_est2timeout(
1942 at_get(&svcpt->scp_at_estimate)),
1943 (int)lustre_msg_get_timeout(req->rq_reqmsg));
1944 /* Add net_latency (see ptlrpc_replay_req) */
1945 to += lustre_msg_get_service_time(req->rq_reqmsg);
1947 extend_recovery_timer(class_exp2obd(req->rq_export), to, true);
1953 static int target_recovery_thread(void *arg)
1955 struct lu_target *lut = arg;
1956 struct obd_device *obd = lut->lut_obd;
1957 struct ptlrpc_request *req;
1958 struct target_recovery_data *trd = &obd->obd_recovery_data;
1959 unsigned long delta;
1960 unsigned long flags;
1962 struct ptlrpc_thread *thread = NULL;
1966 cfs_daemonize_ctxt("tgt_recov");
1968 SIGNAL_MASK_LOCK(current, flags);
1969 sigfillset(¤t->blocked);
1971 SIGNAL_MASK_UNLOCK(current, flags);
1973 OBD_ALLOC_PTR(thread);
1979 OBD_FREE_PTR(thread);
1983 rc = lu_context_init(&env->le_ctx, LCT_MD_THREAD | LCT_DT_THREAD);
1985 OBD_FREE_PTR(thread);
1990 thread->t_env = env;
1991 thread->t_id = -1; /* force filter_iobuf_get/put to use local buffers */
1992 env->le_ctx.lc_thread = thread;
1993 thread->t_data = NULL;
1994 thread->t_watchdog = NULL;
1996 CDEBUG(D_HA, "%s: started recovery thread pid %d\n", obd->obd_name,
1998 trd->trd_processing_task = cfs_curproc_pid();
2000 cfs_spin_lock(&obd->obd_dev_lock);
2001 obd->obd_recovering = 1;
2002 cfs_spin_unlock(&obd->obd_dev_lock);
2003 cfs_complete(&trd->trd_starting);
2005 /* first of all, we have to know the first transno to replay */
2006 if (target_recovery_overseer(obd, check_for_clients,
2007 exp_connect_healthy)) {
2008 abort_req_replay_queue(obd);
2009 abort_lock_replay_queue(obd);
2012 /* next stage: replay requests */
2014 CDEBUG(D_INFO, "1: request replay stage - %d clients from t"LPU64"\n",
2015 cfs_atomic_read(&obd->obd_req_replay_clients),
2016 obd->obd_next_recovery_transno);
2017 while ((req = target_next_replay_req(obd))) {
2018 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2019 DEBUG_REQ(D_HA, req, "processing t"LPD64" from %s",
2020 lustre_msg_get_transno(req->rq_reqmsg),
2021 libcfs_nid2str(req->rq_peer.nid));
2022 handle_recovery_req(thread, req,
2023 trd->trd_recovery_handler);
2025 * bz18031: increase next_recovery_transno before
2026 * target_request_copy_put() will drop exp_rpc reference
2028 cfs_spin_lock(&obd->obd_recovery_task_lock);
2029 obd->obd_next_recovery_transno++;
2030 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2031 target_exp_dequeue_req_replay(req);
2032 target_request_copy_put(req);
2033 obd->obd_replayed_requests++;
2037 * The second stage: replay locks
2039 CDEBUG(D_INFO, "2: lock replay stage - %d clients\n",
2040 cfs_atomic_read(&obd->obd_lock_replay_clients));
2041 while ((req = target_next_replay_lock(obd))) {
2042 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2043 DEBUG_REQ(D_HA, req, "processing lock from %s: ",
2044 libcfs_nid2str(req->rq_peer.nid));
2045 handle_recovery_req(thread, req,
2046 trd->trd_recovery_handler);
2047 target_request_copy_put(req);
2048 obd->obd_replayed_locks++;
2052 * The third stage: reply on final pings, at this moment all clients
2053 * must have request in final queue
2055 CDEBUG(D_INFO, "3: final stage - process recovery completion pings\n");
2056 /** Update server last boot epoch */
2057 lut_boot_epoch_update(lut);
2058 /* We drop recoverying flag to forward all new requests
2059 * to regular mds_handle() since now */
2060 cfs_spin_lock(&obd->obd_dev_lock);
2061 obd->obd_recovering = obd->obd_abort_recovery = 0;
2062 cfs_spin_unlock(&obd->obd_dev_lock);
2063 cfs_spin_lock(&obd->obd_recovery_task_lock);
2064 target_cancel_recovery_timer(obd);
2065 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2066 while ((req = target_next_final_ping(obd))) {
2067 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2068 DEBUG_REQ(D_HA, req, "processing final ping from %s: ",
2069 libcfs_nid2str(req->rq_peer.nid));
2070 handle_recovery_req(thread, req,
2071 trd->trd_recovery_handler);
2072 target_request_copy_put(req);
2075 delta = (jiffies - delta) / CFS_HZ;
2076 CDEBUG(D_INFO,"4: recovery completed in %lus - %d/%d reqs/locks\n",
2077 delta, obd->obd_replayed_requests, obd->obd_replayed_locks);
2078 if (delta > OBD_RECOVERY_TIME_SOFT) {
2079 CWARN("too long recovery - read logs\n");
2080 libcfs_debug_dumplog();
2083 target_finish_recovery(obd);
2085 lu_context_fini(&env->le_ctx);
2086 trd->trd_processing_task = 0;
2087 cfs_complete(&trd->trd_finishing);
2089 OBD_FREE_PTR(thread);
2094 static int target_start_recovery_thread(struct lu_target *lut,
2095 svc_handler_t handler)
2097 struct obd_device *obd = lut->lut_obd;
2099 struct target_recovery_data *trd = &obd->obd_recovery_data;
2101 memset(trd, 0, sizeof(*trd));
2102 cfs_init_completion(&trd->trd_starting);
2103 cfs_init_completion(&trd->trd_finishing);
2104 trd->trd_recovery_handler = handler;
2106 if (cfs_create_thread(target_recovery_thread, lut, 0) > 0) {
2107 cfs_wait_for_completion(&trd->trd_starting);
2108 LASSERT(obd->obd_recovering != 0);
2115 void target_stop_recovery_thread(struct obd_device *obd)
2117 if (obd->obd_recovery_data.trd_processing_task > 0) {
2118 struct target_recovery_data *trd = &obd->obd_recovery_data;
2119 /** recovery can be done but postrecovery is not yet */
2120 cfs_spin_lock(&obd->obd_dev_lock);
2121 if (obd->obd_recovering) {
2122 CERROR("%s: Aborting recovery\n", obd->obd_name);
2123 obd->obd_abort_recovery = 1;
2124 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2126 cfs_spin_unlock(&obd->obd_dev_lock);
2127 cfs_wait_for_completion(&trd->trd_finishing);
2131 void target_recovery_fini(struct obd_device *obd)
2133 class_disconnect_exports(obd);
2134 target_stop_recovery_thread(obd);
2135 target_cleanup_recovery(obd);
2137 EXPORT_SYMBOL(target_recovery_fini);
2139 static void target_recovery_expired(unsigned long castmeharder)
2141 struct obd_device *obd = (struct obd_device *)castmeharder;
2142 CDEBUG(D_HA, "%s: recovery timed out; %d clients are still in recovery"
2143 " after %lds (%d clients connected)\n",
2144 obd->obd_name, cfs_atomic_read(&obd->obd_lock_replay_clients),
2145 cfs_time_current_sec()- obd->obd_recovery_start,
2146 cfs_atomic_read(&obd->obd_connected_clients));
2148 obd->obd_recovery_expired = 1;
2149 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2152 void target_recovery_init(struct lu_target *lut, svc_handler_t handler)
2154 struct obd_device *obd = lut->lut_obd;
2155 if (obd->obd_max_recoverable_clients == 0) {
2156 /** Update server last boot epoch */
2157 lut_boot_epoch_update(lut);
2161 CWARN("RECOVERY: service %s, %d recoverable clients, "
2162 "last_transno "LPU64"\n", obd->obd_name,
2163 obd->obd_max_recoverable_clients, obd->obd_last_committed);
2164 LASSERT(obd->obd_stopping == 0);
2165 obd->obd_next_recovery_transno = obd->obd_last_committed + 1;
2166 obd->obd_recovery_start = 0;
2167 obd->obd_recovery_end = 0;
2169 cfs_timer_init(&obd->obd_recovery_timer, target_recovery_expired, obd);
2170 target_start_recovery_thread(lut, handler);
2172 EXPORT_SYMBOL(target_recovery_init);
2174 #endif /* __KERNEL__ */
2176 static int target_process_req_flags(struct obd_device *obd,
2177 struct ptlrpc_request *req)
2179 struct obd_export *exp = req->rq_export;
2180 LASSERT(exp != NULL);
2181 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REQ_REPLAY_DONE) {
2182 /* client declares he's ready to replay locks */
2183 cfs_spin_lock(&exp->exp_lock);
2184 if (exp->exp_req_replay_needed) {
2185 exp->exp_req_replay_needed = 0;
2186 cfs_spin_unlock(&exp->exp_lock);
2188 LASSERT_ATOMIC_POS(&obd->obd_req_replay_clients);
2189 cfs_atomic_dec(&obd->obd_req_replay_clients);
2191 cfs_spin_unlock(&exp->exp_lock);
2194 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LOCK_REPLAY_DONE) {
2195 /* client declares he's ready to complete recovery
2196 * so, we put the request on th final queue */
2197 cfs_spin_lock(&exp->exp_lock);
2198 if (exp->exp_lock_replay_needed) {
2199 exp->exp_lock_replay_needed = 0;
2200 cfs_spin_unlock(&exp->exp_lock);
2202 LASSERT_ATOMIC_POS(&obd->obd_lock_replay_clients);
2203 cfs_atomic_dec(&obd->obd_lock_replay_clients);
2205 cfs_spin_unlock(&exp->exp_lock);
2211 int target_queue_recovery_request(struct ptlrpc_request *req,
2212 struct obd_device *obd)
2216 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
2219 if (obd->obd_recovery_data.trd_processing_task == cfs_curproc_pid()) {
2220 /* Processing the queue right now, don't re-add. */
2224 target_process_req_flags(obd, req);
2226 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LOCK_REPLAY_DONE) {
2227 /* client declares he's ready to complete recovery
2228 * so, we put the request on th final queue */
2229 target_request_copy_get(req);
2230 DEBUG_REQ(D_HA, req, "queue final req");
2231 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2232 cfs_spin_lock(&obd->obd_recovery_task_lock);
2233 if (obd->obd_recovering) {
2234 cfs_list_add_tail(&req->rq_list,
2235 &obd->obd_final_req_queue);
2237 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2238 target_request_copy_put(req);
2239 RETURN(obd->obd_stopping ? -ENOTCONN : 1);
2241 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2244 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REQ_REPLAY_DONE) {
2245 /* client declares he's ready to replay locks */
2246 target_request_copy_get(req);
2247 DEBUG_REQ(D_HA, req, "queue lock replay req");
2248 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2249 cfs_spin_lock(&obd->obd_recovery_task_lock);
2250 LASSERT(obd->obd_recovering);
2251 /* usually due to recovery abort */
2252 if (!req->rq_export->exp_in_recovery) {
2253 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2254 target_request_copy_put(req);
2257 LASSERT(req->rq_export->exp_lock_replay_needed);
2258 cfs_list_add_tail(&req->rq_list, &obd->obd_lock_replay_queue);
2259 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2263 /* CAVEAT EMPTOR: The incoming request message has been swabbed
2264 * (i.e. buflens etc are in my own byte order), but type-dependent
2265 * buffers (eg mdt_body, ost_body etc) have NOT been swabbed. */
2268 CFS_INIT_LIST_HEAD(&req->rq_list);
2269 DEBUG_REQ(D_HA, req, "not queueing");
2273 /* If we're processing the queue, we want don't want to queue this
2276 * Also, if this request has a transno less than the one we're waiting
2277 * for, we should process it now. It could (and currently always will)
2278 * be an open request for a descriptor that was opened some time ago.
2280 * Also, a resent, replayed request that has already been
2281 * handled will pass through here and be processed immediately.
2283 CDEBUG(D_HA, "Next recovery transno: "LPU64
2284 ", current: "LPU64", replaying\n",
2285 obd->obd_next_recovery_transno, transno);
2286 cfs_spin_lock(&obd->obd_recovery_task_lock);
2287 if (transno < obd->obd_next_recovery_transno) {
2288 /* Processing the queue right now, don't re-add. */
2289 LASSERT(cfs_list_empty(&req->rq_list));
2290 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2293 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2295 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_REPLAY_DROP))
2298 target_request_copy_get(req);
2299 if (!req->rq_export->exp_in_recovery) {
2300 target_request_copy_put(req);
2303 LASSERT(req->rq_export->exp_req_replay_needed);
2305 if (target_exp_enqueue_req_replay(req)) {
2306 DEBUG_REQ(D_ERROR, req, "dropping resent queued req");
2307 target_request_copy_put(req);
2312 cfs_spin_lock(&obd->obd_recovery_task_lock);
2313 LASSERT(obd->obd_recovering);
2314 cfs_list_for_each(tmp, &obd->obd_req_replay_queue) {
2315 struct ptlrpc_request *reqiter =
2316 cfs_list_entry(tmp, struct ptlrpc_request, rq_list);
2318 if (lustre_msg_get_transno(reqiter->rq_reqmsg) > transno) {
2319 cfs_list_add_tail(&req->rq_list, &reqiter->rq_list);
2324 if (unlikely(lustre_msg_get_transno(reqiter->rq_reqmsg) ==
2326 DEBUG_REQ(D_ERROR, req, "dropping replay: transno "
2327 "has been claimed by another client");
2328 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2329 target_exp_dequeue_req_replay(req);
2330 target_request_copy_put(req);
2336 cfs_list_add_tail(&req->rq_list, &obd->obd_req_replay_queue);
2338 obd->obd_requests_queued_for_recovery++;
2339 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2340 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2344 int target_handle_ping(struct ptlrpc_request *req)
2346 obd_ping(req->rq_svc_thread->t_env, req->rq_export);
2347 return req_capsule_server_pack(&req->rq_pill);
2350 void target_committed_to_req(struct ptlrpc_request *req)
2352 struct obd_export *exp = req->rq_export;
2354 if (!exp->exp_obd->obd_no_transno && req->rq_repmsg != NULL)
2355 lustre_msg_set_last_committed(req->rq_repmsg,
2356 exp->exp_last_committed);
2358 DEBUG_REQ(D_IOCTL, req, "not sending last_committed update (%d/"
2359 "%d)", exp->exp_obd->obd_no_transno,
2360 req->rq_repmsg == NULL);
2362 CDEBUG(D_INFO, "last_committed "LPU64", transno "LPU64", xid "LPU64"\n",
2363 exp->exp_last_committed, req->rq_transno, req->rq_xid);
2365 EXPORT_SYMBOL(target_committed_to_req);
2367 #endif /* HAVE_SERVER_SUPPORT */
2370 * Packs current SLV and Limit into \a req.
2372 int target_pack_pool_reply(struct ptlrpc_request *req)
2374 struct obd_device *obd;
2378 * Check that we still have all structures alive as this may
2379 * be some late rpc in shutdown time.
2381 if (unlikely(!req->rq_export || !req->rq_export->exp_obd ||
2382 !exp_connect_lru_resize(req->rq_export))) {
2383 lustre_msg_set_slv(req->rq_repmsg, 0);
2384 lustre_msg_set_limit(req->rq_repmsg, 0);
2389 * OBD is alive here as export is alive, which we checked above.
2391 obd = req->rq_export->exp_obd;
2393 cfs_read_lock(&obd->obd_pool_lock);
2394 lustre_msg_set_slv(req->rq_repmsg, obd->obd_pool_slv);
2395 lustre_msg_set_limit(req->rq_repmsg, obd->obd_pool_limit);
2396 cfs_read_unlock(&obd->obd_pool_lock);
2401 int target_send_reply_msg(struct ptlrpc_request *req, int rc, int fail_id)
2403 if (OBD_FAIL_CHECK_ORSET(fail_id & ~OBD_FAIL_ONCE, OBD_FAIL_ONCE)) {
2404 DEBUG_REQ(D_ERROR, req, "dropping reply");
2409 DEBUG_REQ(D_NET, req, "processing error (%d)", rc);
2410 req->rq_status = rc;
2411 return (ptlrpc_send_error(req, 1));
2413 DEBUG_REQ(D_NET, req, "sending reply");
2416 return (ptlrpc_send_reply(req, PTLRPC_REPLY_MAYBE_DIFFICULT));
2419 void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
2421 struct ptlrpc_service_part *svcpt;
2423 struct ptlrpc_reply_state *rs;
2424 struct obd_export *exp;
2427 if (req->rq_no_reply) {
2432 svcpt = req->rq_rqbd->rqbd_svcpt;
2433 rs = req->rq_reply_state;
2434 if (rs == NULL || !rs->rs_difficult) {
2436 target_send_reply_msg (req, rc, fail_id);
2441 /* must be an export if locks saved */
2442 LASSERT (req->rq_export != NULL);
2443 /* req/reply consistent */
2444 LASSERT(rs->rs_svcpt == svcpt);
2447 LASSERT (!rs->rs_scheduled);
2448 LASSERT (!rs->rs_scheduled_ever);
2449 LASSERT (!rs->rs_handled);
2450 LASSERT (!rs->rs_on_net);
2451 LASSERT (rs->rs_export == NULL);
2452 LASSERT (cfs_list_empty(&rs->rs_obd_list));
2453 LASSERT (cfs_list_empty(&rs->rs_exp_list));
2455 exp = class_export_get (req->rq_export);
2457 /* disable reply scheduling while I'm setting up */
2458 rs->rs_scheduled = 1;
2460 rs->rs_xid = req->rq_xid;
2461 rs->rs_transno = req->rq_transno;
2462 rs->rs_export = exp;
2463 rs->rs_opc = lustre_msg_get_opc(rs->rs_msg);
2465 cfs_spin_lock(&exp->exp_uncommitted_replies_lock);
2466 CDEBUG(D_NET, "rs transno = "LPU64", last committed = "LPU64"\n",
2467 rs->rs_transno, exp->exp_last_committed);
2468 if (rs->rs_transno > exp->exp_last_committed) {
2469 /* not committed already */
2470 cfs_list_add_tail(&rs->rs_obd_list,
2471 &exp->exp_uncommitted_replies);
2473 cfs_spin_unlock (&exp->exp_uncommitted_replies_lock);
2475 cfs_spin_lock(&exp->exp_lock);
2476 cfs_list_add_tail(&rs->rs_exp_list, &exp->exp_outstanding_replies);
2477 cfs_spin_unlock(&exp->exp_lock);
2479 netrc = target_send_reply_msg (req, rc, fail_id);
2481 cfs_spin_lock(&svcpt->scp_rep_lock);
2483 cfs_atomic_inc(&svcpt->scp_nreps_difficult);
2486 /* error sending: reply is off the net. Also we need +1
2487 * reply ref until ptlrpc_handle_rs() is done
2488 * with the reply state (if the send was successful, there
2489 * would have been +1 ref for the net, which
2490 * reply_out_callback leaves alone) */
2492 ptlrpc_rs_addref(rs);
2495 cfs_spin_lock(&rs->rs_lock);
2496 if (rs->rs_transno <= exp->exp_last_committed ||
2497 (!rs->rs_on_net && !rs->rs_no_ack) ||
2498 cfs_list_empty(&rs->rs_exp_list) || /* completed already */
2499 cfs_list_empty(&rs->rs_obd_list)) {
2500 CDEBUG(D_HA, "Schedule reply immediately\n");
2501 ptlrpc_dispatch_difficult_reply(rs);
2503 cfs_list_add(&rs->rs_list, &svcpt->scp_rep_active);
2504 rs->rs_scheduled = 0; /* allow notifier to schedule */
2506 cfs_spin_unlock(&rs->rs_lock);
2507 cfs_spin_unlock(&svcpt->scp_rep_lock);
2511 ldlm_mode_t lck_compat_array[] = {
2512 [LCK_EX] LCK_COMPAT_EX,
2513 [LCK_PW] LCK_COMPAT_PW,
2514 [LCK_PR] LCK_COMPAT_PR,
2515 [LCK_CW] LCK_COMPAT_CW,
2516 [LCK_CR] LCK_COMPAT_CR,
2517 [LCK_NL] LCK_COMPAT_NL,
2518 [LCK_GROUP] LCK_COMPAT_GROUP,
2519 [LCK_COS] LCK_COMPAT_COS,
2523 * Rather arbitrary mapping from LDLM error codes to errno values. This should
2524 * not escape to the user level.
2526 int ldlm_error2errno(ldlm_error_t error)
2534 case ELDLM_LOCK_CHANGED:
2537 case ELDLM_LOCK_ABORTED:
2540 case ELDLM_LOCK_REPLACED:
2543 case ELDLM_NO_LOCK_DATA:
2546 case ELDLM_NAMESPACE_EXISTS:
2549 case ELDLM_BAD_NAMESPACE:
2553 if (((int)error) < 0) /* cast to signed type */
2554 result = error; /* as ldlm_error_t can be unsigned */
2556 CERROR("Invalid DLM result code: %d\n", error);
2562 EXPORT_SYMBOL(ldlm_error2errno);
2565 * Dual to ldlm_error2errno(): maps errno values back to ldlm_error_t.
2567 ldlm_error_t ldlm_errno2error(int err_no)
2576 error = ELDLM_LOCK_CHANGED;
2579 error = ELDLM_LOCK_ABORTED;
2582 error = ELDLM_LOCK_REPLACED;
2585 error = ELDLM_NO_LOCK_DATA;
2588 error = ELDLM_NAMESPACE_EXISTS;
2591 error = ELDLM_BAD_NAMESPACE;
2598 EXPORT_SYMBOL(ldlm_errno2error);
2600 #if LUSTRE_TRACKS_LOCK_EXP_REFS
2601 void ldlm_dump_export_locks(struct obd_export *exp)
2603 cfs_spin_lock(&exp->exp_locks_list_guard);
2604 if (!cfs_list_empty(&exp->exp_locks_list)) {
2605 struct ldlm_lock *lock;
2607 CERROR("dumping locks for export %p,"
2608 "ignore if the unmount doesn't hang\n", exp);
2609 cfs_list_for_each_entry(lock, &exp->exp_locks_list, l_exp_refs_link)
2610 LDLM_ERROR(lock, "lock:");
2612 cfs_spin_unlock(&exp->exp_locks_list_guard);
2616 #ifdef HAVE_SERVER_SUPPORT
2617 static int target_bulk_timeout(void *data)
2620 /* We don't fail the connection here, because having the export
2621 * killed makes the (vital) call to commitrw very sad.
2626 static inline char *bulk2type(struct ptlrpc_bulk_desc *desc)
2628 return desc->bd_type == BULK_GET_SINK ? "GET" : "PUT";
2631 int target_bulk_io(struct obd_export *exp, struct ptlrpc_bulk_desc *desc,
2632 struct l_wait_info *lwi)
2634 struct ptlrpc_request *req = desc->bd_req;
2638 /* Check if there is eviction in progress, and if so, wait for
2640 if (unlikely(cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
2641 *lwi = LWI_INTR(NULL, NULL);
2642 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
2643 !cfs_atomic_read(&exp->exp_obd->
2644 obd_evict_inprogress),
2648 /* Check if client was evicted or tried to reconnect already */
2649 if (exp->exp_failed || exp->exp_abort_active_req) {
2652 if (desc->bd_type == BULK_PUT_SINK)
2653 rc = sptlrpc_svc_wrap_bulk(req, desc);
2655 rc = ptlrpc_start_bulk_transfer(desc);
2658 if (rc == 0 && OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE)) {
2659 ptlrpc_abort_bulk(desc);
2660 } else if (rc == 0) {
2661 time_t start = cfs_time_current_sec();
2663 long timeoutl = req->rq_deadline - cfs_time_current_sec();
2664 cfs_duration_t timeout = timeoutl <= 0 ?
2665 CFS_TICK : cfs_time_seconds(timeoutl);
2666 *lwi = LWI_TIMEOUT_INTERVAL(timeout,
2667 cfs_time_seconds(1),
2668 target_bulk_timeout,
2670 rc = l_wait_event(desc->bd_waitq,
2671 !ptlrpc_server_bulk_active(desc) ||
2673 exp->exp_abort_active_req,
2675 LASSERT(rc == 0 || rc == -ETIMEDOUT);
2676 /* Wait again if we changed deadline */
2677 } while ((rc == -ETIMEDOUT) &&
2678 (req->rq_deadline > cfs_time_current_sec()));
2680 if (rc == -ETIMEDOUT) {
2681 DEBUG_REQ(D_ERROR, req,
2682 "timeout on bulk %s after %ld%+lds",
2684 req->rq_deadline - start,
2685 cfs_time_current_sec() -
2687 ptlrpc_abort_bulk(desc);
2688 } else if (exp->exp_failed) {
2689 DEBUG_REQ(D_ERROR, req, "Eviction on bulk %s",
2692 ptlrpc_abort_bulk(desc);
2693 } else if (exp->exp_abort_active_req) {
2694 DEBUG_REQ(D_ERROR, req, "Reconnect on bulk %s",
2696 /* we don't reply anyway */
2698 ptlrpc_abort_bulk(desc);
2699 } else if (!desc->bd_success ||
2700 desc->bd_nob_transferred != desc->bd_nob) {
2701 DEBUG_REQ(D_ERROR, req, "%s bulk %s %d(%d)",
2703 "truncated" : "network error on",
2705 desc->bd_nob_transferred,
2707 /* XXX should this be a different errno? */
2709 } else if (desc->bd_type == BULK_GET_SINK) {
2710 rc = sptlrpc_svc_unwrap_bulk(req, desc);
2713 DEBUG_REQ(D_ERROR, req, "bulk %s failed: rc %d",
2714 bulk2type(desc), rc);
2719 EXPORT_SYMBOL(target_bulk_io);
2721 #endif /* HAVE_SERVER_SUPPORT */