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) 2010, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * This file deals with various client/target related logic including recovery.
40 * TODO: This code more logically belongs in the ptlrpc module than in ldlm and
44 #define DEBUG_SUBSYSTEM S_LDLM
47 # include <libcfs/libcfs.h>
49 # include <liblustre.h>
52 #include <obd_class.h>
53 #include <lustre_dlm.h>
54 #include <lustre_net.h>
55 #include <lustre_sec.h>
56 #include "ldlm_internal.h"
58 /* @priority: If non-zero, move the selected connection to the list head.
59 * @create: If zero, only search in existing connections.
61 static int import_set_conn(struct obd_import *imp, struct obd_uuid *uuid,
62 int priority, int create)
64 struct ptlrpc_connection *ptlrpc_conn;
65 struct obd_import_conn *imp_conn = NULL, *item;
69 if (!create && !priority) {
70 CDEBUG(D_HA, "Nothing to do\n");
74 ptlrpc_conn = ptlrpc_uuid_to_connection(uuid);
76 CDEBUG(D_HA, "can't find connection %s\n", uuid->uuid);
81 OBD_ALLOC(imp_conn, sizeof(*imp_conn));
83 GOTO(out_put, rc = -ENOMEM);
87 spin_lock(&imp->imp_lock);
88 cfs_list_for_each_entry(item, &imp->imp_conn_list, oic_item) {
89 if (obd_uuid_equals(uuid, &item->oic_uuid)) {
91 cfs_list_del(&item->oic_item);
92 cfs_list_add(&item->oic_item,
94 item->oic_last_attempt = 0;
96 CDEBUG(D_HA, "imp %p@%s: found existing conn %s%s\n",
97 imp, imp->imp_obd->obd_name, uuid->uuid,
98 (priority ? ", moved to head" : ""));
99 spin_unlock(&imp->imp_lock);
100 GOTO(out_free, rc = 0);
103 /* No existing import connection found for \a uuid. */
105 imp_conn->oic_conn = ptlrpc_conn;
106 imp_conn->oic_uuid = *uuid;
107 imp_conn->oic_last_attempt = 0;
109 cfs_list_add(&imp_conn->oic_item, &imp->imp_conn_list);
111 cfs_list_add_tail(&imp_conn->oic_item,
112 &imp->imp_conn_list);
113 CDEBUG(D_HA, "imp %p@%s: add connection %s at %s\n",
114 imp, imp->imp_obd->obd_name, uuid->uuid,
115 (priority ? "head" : "tail"));
117 spin_unlock(&imp->imp_lock);
118 GOTO(out_free, rc = -ENOENT);
121 spin_unlock(&imp->imp_lock);
125 OBD_FREE(imp_conn, sizeof(*imp_conn));
127 ptlrpc_connection_put(ptlrpc_conn);
131 int import_set_conn_priority(struct obd_import *imp, struct obd_uuid *uuid)
133 return import_set_conn(imp, uuid, 1, 0);
136 int client_import_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
139 return import_set_conn(imp, uuid, priority, 1);
141 EXPORT_SYMBOL(client_import_add_conn);
143 int client_import_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
145 struct obd_import_conn *imp_conn;
146 struct obd_export *dlmexp;
150 spin_lock(&imp->imp_lock);
151 if (cfs_list_empty(&imp->imp_conn_list)) {
152 LASSERT(!imp->imp_connection);
156 cfs_list_for_each_entry(imp_conn, &imp->imp_conn_list, oic_item) {
157 if (!obd_uuid_equals(uuid, &imp_conn->oic_uuid))
159 LASSERT(imp_conn->oic_conn);
161 if (imp_conn == imp->imp_conn_current) {
162 LASSERT(imp_conn->oic_conn == imp->imp_connection);
164 if (imp->imp_state != LUSTRE_IMP_CLOSED &&
165 imp->imp_state != LUSTRE_IMP_DISCON) {
166 CERROR("can't remove current connection\n");
167 GOTO(out, rc = -EBUSY);
170 ptlrpc_connection_put(imp->imp_connection);
171 imp->imp_connection = NULL;
173 dlmexp = class_conn2export(&imp->imp_dlm_handle);
174 if (dlmexp && dlmexp->exp_connection) {
175 LASSERT(dlmexp->exp_connection ==
177 ptlrpc_connection_put(dlmexp->exp_connection);
178 dlmexp->exp_connection = NULL;
182 cfs_list_del(&imp_conn->oic_item);
183 ptlrpc_connection_put(imp_conn->oic_conn);
184 OBD_FREE(imp_conn, sizeof(*imp_conn));
185 CDEBUG(D_HA, "imp %p@%s: remove connection %s\n",
186 imp, imp->imp_obd->obd_name, uuid->uuid);
191 spin_unlock(&imp->imp_lock);
193 CERROR("connection %s not found\n", uuid->uuid);
196 EXPORT_SYMBOL(client_import_del_conn);
199 * Find conn UUID by peer NID. \a peer is a server NID. This function is used
200 * to find a conn uuid of \a imp which can reach \a peer.
202 int client_import_find_conn(struct obd_import *imp, lnet_nid_t peer,
203 struct obd_uuid *uuid)
205 struct obd_import_conn *conn;
209 spin_lock(&imp->imp_lock);
210 cfs_list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
211 /* Check if conn UUID does have this peer NID. */
212 if (class_check_uuid(&conn->oic_uuid, peer)) {
213 *uuid = conn->oic_uuid;
218 spin_unlock(&imp->imp_lock);
221 EXPORT_SYMBOL(client_import_find_conn);
223 void client_destroy_import(struct obd_import *imp)
225 /* Drop security policy instance after all RPCs have finished/aborted
226 * to let all busy contexts be released. */
227 class_import_get(imp);
228 class_destroy_import(imp);
229 sptlrpc_import_sec_put(imp);
230 class_import_put(imp);
232 EXPORT_SYMBOL(client_destroy_import);
235 * Check whether or not the OSC is on MDT.
238 * setup 0:{fsname}-OSTxxxx-osc[-MDTxxxx] 1:lustre-OST0000_UUID 2:NID
240 * setup 0:{fsname}-OSTxxxx-osc 1:lustre-OST0000_UUID 2:NID
243 static int osc_on_mdt(char *obdname)
247 ptr = strrchr(obdname, '-');
251 if (strncmp(ptr + 1, "MDT", 3) == 0)
257 /* Configure an RPC client OBD device.
262 * 3 - inactive-on-startup
264 int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
266 struct client_obd *cli = &obddev->u.cli;
267 struct obd_import *imp;
268 struct obd_uuid server_uuid;
269 int rq_portal, rp_portal, connect_op;
270 char *name = obddev->obd_type->typ_name;
271 ldlm_ns_type_t ns_type = LDLM_NS_TYPE_UNKNOWN;
273 char *cli_name = lustre_cfg_buf(lcfg, 0);
276 /* In a more perfect world, we would hang a ptlrpc_client off of
277 * obd_type and just use the values from there. */
278 if (!strcmp(name, LUSTRE_OSC_NAME) ||
279 (!(strcmp(name, LUSTRE_OSP_NAME)) &&
280 (is_osp_on_mdt(cli_name) &&
281 strstr(lustre_cfg_buf(lcfg, 1), "OST") != NULL))) {
282 /* OSC or OSP_on_MDT for OSTs */
283 rq_portal = OST_REQUEST_PORTAL;
284 rp_portal = OSC_REPLY_PORTAL;
285 connect_op = OST_CONNECT;
286 cli->cl_sp_me = LUSTRE_SP_CLI;
287 cli->cl_sp_to = LUSTRE_SP_OST;
288 ns_type = LDLM_NS_TYPE_OSC;
289 } else if (!strcmp(name, LUSTRE_MDC_NAME) ||
290 !strcmp(name, LUSTRE_LWP_NAME) ||
291 (!strcmp(name, LUSTRE_OSP_NAME) &&
292 (is_osp_on_mdt(cli_name) &&
293 strstr(lustre_cfg_buf(lcfg, 1), "OST") == NULL))) {
294 /* MDC or OSP_on_MDT for other MDTs */
295 rq_portal = MDS_REQUEST_PORTAL;
296 rp_portal = MDC_REPLY_PORTAL;
297 connect_op = MDS_CONNECT;
298 cli->cl_sp_me = LUSTRE_SP_CLI;
299 cli->cl_sp_to = LUSTRE_SP_MDT;
300 ns_type = LDLM_NS_TYPE_MDC;
301 } else if (!strcmp(name, LUSTRE_MGC_NAME)) {
302 rq_portal = MGS_REQUEST_PORTAL;
303 rp_portal = MGC_REPLY_PORTAL;
304 connect_op = MGS_CONNECT;
305 cli->cl_sp_me = LUSTRE_SP_MGC;
306 cli->cl_sp_to = LUSTRE_SP_MGS;
307 cli->cl_flvr_mgc.sf_rpc = SPTLRPC_FLVR_INVALID;
308 ns_type = LDLM_NS_TYPE_MGC;
310 CERROR("unknown client OBD type \"%s\", can't setup\n",
315 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
316 CERROR("requires a TARGET UUID\n");
320 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > 37) {
321 CERROR("client UUID must be less than 38 characters\n");
325 if (LUSTRE_CFG_BUFLEN(lcfg, 2) < 1) {
326 CERROR("setup requires a SERVER UUID\n");
330 if (LUSTRE_CFG_BUFLEN(lcfg, 2) > 37) {
331 CERROR("target UUID must be less than 38 characters\n");
335 init_rwsem(&cli->cl_sem);
336 sema_init(&cli->cl_mgc_sem, 1);
337 cli->cl_conn_count = 0;
338 memcpy(server_uuid.uuid, lustre_cfg_buf(lcfg, 2),
339 min_t(unsigned int, LUSTRE_CFG_BUFLEN(lcfg, 2),
340 sizeof(server_uuid)));
343 cli->cl_avail_grant = 0;
344 /* FIXME: Should limit this for the sum of all cl_dirty_max. */
345 cli->cl_dirty_max = OSC_MAX_DIRTY_DEFAULT * 1024 * 1024;
346 if (cli->cl_dirty_max >> CFS_PAGE_SHIFT > cfs_num_physpages / 8)
347 cli->cl_dirty_max = cfs_num_physpages << (CFS_PAGE_SHIFT - 3);
348 CFS_INIT_LIST_HEAD(&cli->cl_cache_waiters);
349 CFS_INIT_LIST_HEAD(&cli->cl_loi_ready_list);
350 CFS_INIT_LIST_HEAD(&cli->cl_loi_hp_ready_list);
351 CFS_INIT_LIST_HEAD(&cli->cl_loi_write_list);
352 CFS_INIT_LIST_HEAD(&cli->cl_loi_read_list);
353 client_obd_list_lock_init(&cli->cl_loi_list_lock);
354 cfs_atomic_set(&cli->cl_pending_w_pages, 0);
355 cfs_atomic_set(&cli->cl_pending_r_pages, 0);
356 cli->cl_r_in_flight = 0;
357 cli->cl_w_in_flight = 0;
359 spin_lock_init(&cli->cl_read_rpc_hist.oh_lock);
360 spin_lock_init(&cli->cl_write_rpc_hist.oh_lock);
361 spin_lock_init(&cli->cl_read_page_hist.oh_lock);
362 spin_lock_init(&cli->cl_write_page_hist.oh_lock);
363 spin_lock_init(&cli->cl_read_offset_hist.oh_lock);
364 spin_lock_init(&cli->cl_write_offset_hist.oh_lock);
367 CFS_INIT_LIST_HEAD(&cli->cl_lru_osc);
368 cfs_atomic_set(&cli->cl_lru_shrinkers, 0);
369 cfs_atomic_set(&cli->cl_lru_busy, 0);
370 cfs_atomic_set(&cli->cl_lru_in_list, 0);
371 CFS_INIT_LIST_HEAD(&cli->cl_lru_list);
372 client_obd_list_lock_init(&cli->cl_lru_list_lock);
374 cfs_waitq_init(&cli->cl_destroy_waitq);
375 cfs_atomic_set(&cli->cl_destroy_in_flight, 0);
376 #ifdef ENABLE_CHECKSUM
377 /* Turn on checksumming by default. */
378 cli->cl_checksum = 1;
380 * The supported checksum types will be worked out at connect time
381 * Set cl_chksum* to CRC32 for now to avoid returning screwed info
384 cli->cl_cksum_type = cli->cl_supp_cksum_types = OBD_CKSUM_CRC32;
386 cfs_atomic_set(&cli->cl_resends, OSC_DEFAULT_RESENDS);
388 /* This value may be changed at connect time in
389 ptlrpc_connect_interpret. */
390 cli->cl_max_pages_per_rpc = min((int)PTLRPC_MAX_BRW_PAGES,
391 (int)(LNET_MTU >> CFS_PAGE_SHIFT));
393 if (!strcmp(name, LUSTRE_MDC_NAME)) {
394 cli->cl_max_rpcs_in_flight = MDC_MAX_RIF_DEFAULT;
395 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 128 /* MB */) {
396 cli->cl_max_rpcs_in_flight = 2;
397 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 256 /* MB */) {
398 cli->cl_max_rpcs_in_flight = 3;
399 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 512 /* MB */) {
400 cli->cl_max_rpcs_in_flight = 4;
402 if (osc_on_mdt(obddev->obd_name))
403 cli->cl_max_rpcs_in_flight = MDS_OSC_MAX_RIF_DEFAULT;
405 cli->cl_max_rpcs_in_flight = OSC_MAX_RIF_DEFAULT;
409 CERROR("ldlm_get_ref failed: %d\n", rc);
413 ptlrpc_init_client(rq_portal, rp_portal, name,
414 &obddev->obd_ldlm_client);
416 imp = class_new_import(obddev);
418 GOTO(err_ldlm, rc = -ENOENT);
419 imp->imp_client = &obddev->obd_ldlm_client;
420 imp->imp_connect_op = connect_op;
421 CFS_INIT_LIST_HEAD(&imp->imp_pinger_chain);
422 memcpy(cli->cl_target_uuid.uuid, lustre_cfg_buf(lcfg, 1),
423 LUSTRE_CFG_BUFLEN(lcfg, 1));
424 class_import_put(imp);
426 rc = client_import_add_conn(imp, &server_uuid, 1);
428 CERROR("can't add initial connection\n");
429 GOTO(err_import, rc);
432 cli->cl_import = imp;
433 /* cli->cl_max_mds_{easize,cookiesize} updated by mdc_init_ea_size() */
434 cli->cl_max_mds_easize = sizeof(struct lov_mds_md_v3);
435 cli->cl_max_mds_cookiesize = sizeof(struct llog_cookie);
437 if (LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
438 if (!strcmp(lustre_cfg_string(lcfg, 3), "inactive")) {
439 CDEBUG(D_HA, "marking %s %s->%s as inactive\n",
440 name, obddev->obd_name,
441 cli->cl_target_uuid.uuid);
442 spin_lock(&imp->imp_lock);
443 imp->imp_deactive = 1;
444 spin_unlock(&imp->imp_lock);
448 obddev->obd_namespace = ldlm_namespace_new(obddev, obddev->obd_name,
449 LDLM_NAMESPACE_CLIENT,
450 LDLM_NAMESPACE_GREEDY,
452 if (obddev->obd_namespace == NULL) {
453 CERROR("Unable to create client namespace - %s\n",
455 GOTO(err_import, rc = -ENOMEM);
458 cli->cl_qchk_stat = CL_NOT_QUOTACHECKED;
463 class_destroy_import(imp);
470 EXPORT_SYMBOL(client_obd_setup);
472 int client_obd_cleanup(struct obd_device *obddev)
476 ldlm_namespace_free_post(obddev->obd_namespace);
477 obddev->obd_namespace = NULL;
479 LASSERT(obddev->u.cli.cl_import == NULL);
484 EXPORT_SYMBOL(client_obd_cleanup);
486 /* ->o_connect() method for client side (OSC and MDC and MGC) */
487 int client_connect_import(const struct lu_env *env,
488 struct obd_export **exp,
489 struct obd_device *obd, struct obd_uuid *cluuid,
490 struct obd_connect_data *data, void *localdata)
492 struct client_obd *cli = &obd->u.cli;
493 struct obd_import *imp = cli->cl_import;
494 struct obd_connect_data *ocd;
495 struct lustre_handle conn = { 0 };
500 down_write(&cli->cl_sem);
501 if (cli->cl_conn_count > 0 )
502 GOTO(out_sem, rc = -EALREADY);
504 rc = class_connect(&conn, obd, cluuid);
508 cli->cl_conn_count++;
509 *exp = class_conn2export(&conn);
511 LASSERT(obd->obd_namespace);
513 imp->imp_dlm_handle = conn;
514 rc = ptlrpc_init_import(imp);
518 ocd = &imp->imp_connect_data;
521 imp->imp_connect_flags_orig = data->ocd_connect_flags;
524 rc = ptlrpc_connect_import(imp);
526 LASSERT (imp->imp_state == LUSTRE_IMP_DISCON);
529 LASSERT((*exp)->exp_connection);
532 LASSERTF((ocd->ocd_connect_flags & data->ocd_connect_flags) ==
533 ocd->ocd_connect_flags, "old "LPX64", new "LPX64"\n",
534 data->ocd_connect_flags, ocd->ocd_connect_flags);
535 data->ocd_connect_flags = ocd->ocd_connect_flags;
538 ptlrpc_pinger_add_import(imp);
544 cli->cl_conn_count--;
545 class_disconnect(*exp);
549 up_write(&cli->cl_sem);
553 EXPORT_SYMBOL(client_connect_import);
555 int client_disconnect_export(struct obd_export *exp)
557 struct obd_device *obd = class_exp2obd(exp);
558 struct client_obd *cli;
559 struct obd_import *imp;
564 CERROR("invalid export for disconnect: exp %p cookie "LPX64"\n",
565 exp, exp ? exp->exp_handle.h_cookie : -1);
570 imp = cli->cl_import;
572 down_write(&cli->cl_sem);
573 CDEBUG(D_INFO, "disconnect %s - %d\n", obd->obd_name,
576 if (!cli->cl_conn_count) {
577 CERROR("disconnecting disconnected device (%s)\n",
579 GOTO(out_disconnect, rc = -EINVAL);
582 cli->cl_conn_count--;
583 if (cli->cl_conn_count)
584 GOTO(out_disconnect, rc = 0);
586 /* Mark import deactivated now, so we don't try to reconnect if any
587 * of the cleanup RPCs fails (e.g. LDLM cancel, etc). We don't
588 * fully deactivate the import, or that would drop all requests. */
589 spin_lock(&imp->imp_lock);
590 imp->imp_deactive = 1;
591 spin_unlock(&imp->imp_lock);
593 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
594 * delete it regardless. (It's safe to delete an import that was
596 (void)ptlrpc_pinger_del_import(imp);
598 if (obd->obd_namespace != NULL) {
599 /* obd_force == local only */
600 ldlm_cli_cancel_unused(obd->obd_namespace, NULL,
601 obd->obd_force ? LCF_LOCAL : 0, NULL);
602 ldlm_namespace_free_prior(obd->obd_namespace, imp, obd->obd_force);
605 /* There's no need to hold sem while disconnecting an import,
606 * and it may actually cause deadlock in GSS. */
607 up_write(&cli->cl_sem);
608 rc = ptlrpc_disconnect_import(imp, 0);
609 down_write(&cli->cl_sem);
611 ptlrpc_invalidate_import(imp);
616 /* Use server style - class_disconnect should be always called for
618 err = class_disconnect(exp);
622 up_write(&cli->cl_sem);
626 EXPORT_SYMBOL(client_disconnect_export);
628 #ifdef HAVE_SERVER_SUPPORT
629 int server_disconnect_export(struct obd_export *exp)
634 /* Disconnect early so that clients can't keep using export. */
635 rc = class_disconnect(exp);
636 /* Close import to avoid sending any requests. */
637 if (exp->exp_imp_reverse)
638 ptlrpc_cleanup_imp(exp->exp_imp_reverse);
640 if (exp->exp_obd->obd_namespace != NULL)
641 ldlm_cancel_locks_for_export(exp);
643 /* complete all outstanding replies */
644 spin_lock(&exp->exp_lock);
645 while (!cfs_list_empty(&exp->exp_outstanding_replies)) {
646 struct ptlrpc_reply_state *rs =
647 cfs_list_entry(exp->exp_outstanding_replies.next,
648 struct ptlrpc_reply_state, rs_exp_list);
649 struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
651 spin_lock(&svcpt->scp_rep_lock);
653 cfs_list_del_init(&rs->rs_exp_list);
654 spin_lock(&rs->rs_lock);
655 ptlrpc_schedule_difficult_reply(rs);
656 spin_unlock(&rs->rs_lock);
658 spin_unlock(&svcpt->scp_rep_lock);
660 spin_unlock(&exp->exp_lock);
664 EXPORT_SYMBOL(server_disconnect_export);
666 /* --------------------------------------------------------------------------
667 * from old lib/target.c
668 * -------------------------------------------------------------------------- */
670 static int target_handle_reconnect(struct lustre_handle *conn,
671 struct obd_export *exp,
672 struct obd_uuid *cluuid)
676 if (exp->exp_connection && exp->exp_imp_reverse) {
677 struct lustre_handle *hdl;
678 struct obd_device *target;
680 hdl = &exp->exp_imp_reverse->imp_remote_handle;
681 target = exp->exp_obd;
683 /* Might be a re-connect after a partition. */
684 if (!memcmp(&conn->cookie, &hdl->cookie, sizeof conn->cookie)) {
685 if (target->obd_recovering) {
686 int timeout = cfs_duration_sec(cfs_time_sub(
688 &target->obd_recovery_timer),
689 cfs_time_current()));
691 LCONSOLE_WARN("%s: Client %s (at %s) reconnect"
692 "ing, waiting for %d clients in recov"
693 "ery for %d:%.02d\n", target->obd_name,
694 obd_uuid2str(&exp->exp_client_uuid),
695 obd_export_nid2str(exp),
696 target->obd_max_recoverable_clients,
697 timeout / 60, timeout % 60);
699 LCONSOLE_WARN("%s: Client %s (at %s) "
700 "reconnecting\n", target->obd_name,
701 obd_uuid2str(&exp->exp_client_uuid),
702 obd_export_nid2str(exp));
705 conn->cookie = exp->exp_handle.h_cookie;
706 /* target_handle_connect() treats EALREADY and
707 * -EALREADY differently. EALREADY means we are
708 * doing a valid reconnect from the same client. */
711 LCONSOLE_WARN("%s: already connected client %s (at %s) "
712 "with handle "LPX64". Rejecting client "
713 "with the same UUID trying to reconnect "
714 "with handle "LPX64"\n", target->obd_name,
715 obd_uuid2str(&exp->exp_client_uuid),
716 obd_export_nid2str(exp),
717 hdl->cookie, conn->cookie);
718 memset(conn, 0, sizeof *conn);
719 /* target_handle_connect() treats EALREADY and
720 * -EALREADY differently. -EALREADY is an error
721 * (same UUID, different handle). */
726 conn->cookie = exp->exp_handle.h_cookie;
727 CDEBUG(D_HA, "connect export for UUID '%s' at %p, cookie "LPX64"\n",
728 cluuid->uuid, exp, conn->cookie);
732 void target_client_add_cb(struct obd_device *obd, __u64 transno, void *cb_data,
735 struct obd_export *exp = cb_data;
737 CDEBUG(D_RPCTRACE, "%s: committing for initial connect of %s\n",
738 obd->obd_name, exp->exp_client_uuid.uuid);
740 spin_lock(&exp->exp_lock);
741 exp->exp_need_sync = 0;
742 spin_unlock(&exp->exp_lock);
743 class_export_cb_put(exp);
745 EXPORT_SYMBOL(target_client_add_cb);
749 check_and_start_recovery_timer(struct obd_device *obd,
750 struct ptlrpc_request *req, int new_client);
753 check_and_start_recovery_timer(struct obd_device *obd,
754 struct ptlrpc_request *req, int new_client)
759 int target_handle_connect(struct ptlrpc_request *req)
761 struct obd_device *target = NULL, *targref = NULL;
762 struct obd_export *export = NULL;
763 struct obd_import *revimp;
764 struct obd_import *tmp_imp = NULL;
765 struct lustre_handle conn;
766 struct lustre_handle *tmp;
767 struct obd_uuid tgtuuid;
768 struct obd_uuid cluuid;
769 struct obd_uuid remote_uuid;
774 bool mds_conn = false, lw_client = false;
775 struct obd_connect_data *data, *tmpdata;
777 lnet_nid_t *client_nid = NULL;
780 OBD_RACE(OBD_FAIL_TGT_CONN_RACE);
782 str = req_capsule_client_get(&req->rq_pill, &RMF_TGTUUID);
784 DEBUG_REQ(D_ERROR, req, "bad target UUID for connect");
785 GOTO(out, rc = -EINVAL);
788 obd_str2uuid(&tgtuuid, str);
789 target = class_uuid2obd(&tgtuuid);
791 target = class_name2obd(str);
794 deuuidify(str, NULL, &target_start, &target_len);
795 LCONSOLE_ERROR_MSG(0x137, "UUID '%s' is not available for "
796 "connect (no target)\n", str);
797 GOTO(out, rc = -ENODEV);
800 spin_lock(&target->obd_dev_lock);
801 if (target->obd_stopping || !target->obd_set_up) {
802 spin_unlock(&target->obd_dev_lock);
804 deuuidify(str, NULL, &target_start, &target_len);
805 LCONSOLE_ERROR_MSG(0x137, "%.*s: Not available for connect "
806 "from %s (%s)\n", target_len, target_start,
807 libcfs_nid2str(req->rq_peer.nid),
808 (target->obd_stopping ?
809 "stopping" : "not set up"));
810 GOTO(out, rc = -ENODEV);
813 if (target->obd_no_conn) {
814 spin_unlock(&target->obd_dev_lock);
816 CDEBUG(D_INFO, "%s: Temporarily refusing client connection "
817 "from %s\n", target->obd_name,
818 libcfs_nid2str(req->rq_peer.nid));
819 GOTO(out, rc = -EAGAIN);
822 /* Make sure the target isn't cleaned up while we're here. Yes,
823 * there's still a race between the above check and our incref here.
824 * Really, class_uuid2obd should take the ref. */
825 targref = class_incref(target, __FUNCTION__, cfs_current());
827 target->obd_conn_inprogress++;
828 spin_unlock(&target->obd_dev_lock);
830 str = req_capsule_client_get(&req->rq_pill, &RMF_CLUUID);
832 DEBUG_REQ(D_ERROR, req, "bad client UUID for connect");
833 GOTO(out, rc = -EINVAL);
836 obd_str2uuid(&cluuid, str);
838 /* XXX Extract a nettype and format accordingly. */
839 switch (sizeof(lnet_nid_t)) {
840 /* NB the casts only avoid compiler warnings. */
842 snprintf(remote_uuid.uuid, sizeof remote_uuid,
843 "NET_"LPX64"_UUID", (__u64)req->rq_peer.nid);
846 snprintf(remote_uuid.uuid, sizeof remote_uuid,
847 "NET_%x_UUID", (__u32)req->rq_peer.nid);
853 tmp = req_capsule_client_get(&req->rq_pill, &RMF_CONN);
855 GOTO(out, rc = -EPROTO);
859 size = req_capsule_get_size(&req->rq_pill, &RMF_CONNECT_DATA,
861 data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
863 GOTO(out, rc = -EPROTO);
865 rc = req_capsule_server_pack(&req->rq_pill);
869 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
871 DEBUG_REQ(D_WARNING, req, "Refusing old (unversioned) "
872 "libclient connection attempt");
873 GOTO(out, rc = -EPROTO);
874 } else if (data->ocd_version < LUSTRE_VERSION_CODE -
875 LUSTRE_VERSION_ALLOWED_OFFSET ||
876 data->ocd_version > LUSTRE_VERSION_CODE +
877 LUSTRE_VERSION_ALLOWED_OFFSET) {
878 DEBUG_REQ(D_WARNING, req, "Refusing %s (%d.%d.%d.%d) "
879 "libclient connection attempt",
880 data->ocd_version < LUSTRE_VERSION_CODE ?
882 OBD_OCD_VERSION_MAJOR(data->ocd_version),
883 OBD_OCD_VERSION_MINOR(data->ocd_version),
884 OBD_OCD_VERSION_PATCH(data->ocd_version),
885 OBD_OCD_VERSION_FIX(data->ocd_version));
886 data = req_capsule_server_sized_get(&req->rq_pill,
888 offsetof(typeof(*data), ocd_version) +
889 sizeof(data->ocd_version));
891 data->ocd_connect_flags = OBD_CONNECT_VERSION;
892 data->ocd_version = LUSTRE_VERSION_CODE;
894 GOTO(out, rc = -EPROTO);
898 if ((lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_INITIAL) &&
899 (data->ocd_connect_flags & OBD_CONNECT_MDS))
902 if ((data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) != 0)
905 /* lctl gets a backstage, all-access pass. */
906 if (obd_uuid_equals(&cluuid, &target->obd_uuid))
907 goto dont_check_exports;
909 export = cfs_hash_lookup(target->obd_uuid_hash, &cluuid);
913 /* We've found an export in the hash. */
915 spin_lock(&export->exp_lock);
917 if (export->exp_connecting) { /* bug 9635, et. al. */
918 spin_unlock(&export->exp_lock);
919 LCONSOLE_WARN("%s: Export %p already connecting from %s\n",
920 export->exp_obd->obd_name, export,
921 libcfs_nid2str(req->rq_peer.nid));
922 class_export_put(export);
925 } else if (mds_conn && export->exp_connection) {
926 spin_unlock(&export->exp_lock);
927 if (req->rq_peer.nid != export->exp_connection->c_peer.nid)
928 /* MDS reconnected after failover. */
929 LCONSOLE_WARN("%s: Received MDS connection from "
930 "%s, removing former export from %s\n",
931 target->obd_name, libcfs_nid2str(req->rq_peer.nid),
932 libcfs_nid2str(export->exp_connection->c_peer.nid));
934 /* New MDS connection from the same NID. */
935 LCONSOLE_WARN("%s: Received new MDS connection from "
936 "%s, removing former export from same NID\n",
937 target->obd_name, libcfs_nid2str(req->rq_peer.nid));
938 class_fail_export(export);
939 class_export_put(export);
942 } else if (export->exp_connection != NULL &&
943 req->rq_peer.nid != export->exp_connection->c_peer.nid &&
944 (lustre_msg_get_op_flags(req->rq_reqmsg) &
945 MSG_CONNECT_INITIAL)) {
946 spin_unlock(&export->exp_lock);
947 /* In MDS failover we have static UUID but NID can change. */
948 LCONSOLE_WARN("%s: Client %s seen on new nid %s when "
949 "existing nid %s is already connected\n",
950 target->obd_name, cluuid.uuid,
951 libcfs_nid2str(req->rq_peer.nid),
953 export->exp_connection->c_peer.nid));
955 class_export_put(export);
958 export->exp_connecting = 1;
959 spin_unlock(&export->exp_lock);
960 LASSERT(export->exp_obd == target);
962 rc = target_handle_reconnect(&conn, export, &cluuid);
965 /* If we found an export, we already unlocked. */
968 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_CONNECT, 2 * obd_timeout);
969 } else if (req->rq_export == NULL &&
970 cfs_atomic_read(&export->exp_rpc_count) > 0) {
971 LCONSOLE_WARN("%s: Client %s (at %s) refused connection, "
972 "still busy with %d references\n",
973 target->obd_name, cluuid.uuid,
974 libcfs_nid2str(req->rq_peer.nid),
975 cfs_atomic_read(&export->exp_refcount));
976 GOTO(out, rc = -EBUSY);
977 } else if (req->rq_export != NULL &&
978 (cfs_atomic_read(&export->exp_rpc_count) > 1)) {
979 /* The current connect RPC has increased exp_rpc_count. */
980 LCONSOLE_WARN("%s: Client %s (at %s) refused reconnection, "
981 "still busy with %d active RPCs\n",
982 target->obd_name, cluuid.uuid,
983 libcfs_nid2str(req->rq_peer.nid),
984 cfs_atomic_read(&export->exp_rpc_count) - 1);
985 spin_lock(&export->exp_lock);
986 if (req->rq_export->exp_conn_cnt <
987 lustre_msg_get_conn_cnt(req->rq_reqmsg))
988 /* try to abort active requests */
989 req->rq_export->exp_abort_active_req = 1;
990 spin_unlock(&export->exp_lock);
991 GOTO(out, rc = -EBUSY);
992 } else if (lustre_msg_get_conn_cnt(req->rq_reqmsg) == 1) {
993 if (!strstr(cluuid.uuid, "mdt"))
994 LCONSOLE_WARN("%s: Rejecting reconnect from the "
995 "known client %s (at %s) because it "
996 "is indicating it is a new client",
997 target->obd_name, cluuid.uuid,
998 libcfs_nid2str(req->rq_peer.nid));
999 GOTO(out, rc = -EALREADY);
1001 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_RECONNECT, 2 * obd_timeout);
1008 CDEBUG(D_HA, "%s: connection from %s@%s %st"LPU64" exp %p cur %ld last %ld\n",
1009 target->obd_name, cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
1010 target->obd_recovering ? "recovering/" : "", data->ocd_transno,
1011 export, (long)cfs_time_current_sec(),
1012 export ? (long)export->exp_last_request_time : 0);
1014 /* If this is the first time a client connects, reset the recovery
1015 * timer. Discard lightweight connections which might be local. */
1016 if (!lw_client && rc == 0 && target->obd_recovering)
1017 check_and_start_recovery_timer(target, req, export == NULL);
1019 /* We want to handle EALREADY but *not* -EALREADY from
1020 * target_handle_reconnect(), return reconnection state in a flag. */
1021 if (rc == EALREADY) {
1022 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
1028 /* Tell the client if we support replayable requests. */
1029 if (target->obd_replayable)
1030 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
1031 client_nid = &req->rq_peer.nid;
1033 if (export == NULL) {
1034 /* allow lightweight connections during recovery */
1035 if (target->obd_recovering && !lw_client) {
1037 int c; /* connected */
1038 int i; /* in progress */
1040 int s; /* stale/evicted */
1042 c = cfs_atomic_read(&target->obd_connected_clients);
1043 i = cfs_atomic_read(&target->obd_lock_replay_clients);
1044 k = target->obd_max_recoverable_clients;
1045 s = target->obd_stale_clients;
1046 t = cfs_timer_deadline(&target->obd_recovery_timer);
1047 t = cfs_time_sub(t, cfs_time_current());
1048 t = cfs_duration_sec(t);
1049 LCONSOLE_WARN("%s: Denying connection for new client "
1050 "%s (at %s), waiting for all %d known "
1051 "clients (%d recovered, %d in progress, "
1052 "and %d evicted) to recover in %d:%.02d\n",
1053 target->obd_name, cluuid.uuid,
1054 libcfs_nid2str(req->rq_peer.nid), k,
1055 c - i, i, s, (int)t / 60,
1060 rc = obd_connect(req->rq_svc_thread->t_env,
1061 &export, target, &cluuid, data,
1064 conn.cookie = export->exp_handle.h_cookie;
1067 rc = obd_reconnect(req->rq_svc_thread->t_env,
1068 export, target, &cluuid, data, client_nid);
1073 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 6, 50, 0)
1074 /* 2.2.0 clients always swab nidtbl entries due to a bug, so server
1075 * will do the swabbing for if the client is using the same endianness.
1077 * This fixup is version-limited, because we don't want to carry the
1078 * OBD_CONNECT_MNE_SWAB flag around forever, just so long as we need
1079 * interop with unpatched 2.2 clients. For newer clients, servers
1080 * will never do MNE swabbing, let the client handle that. LU-1644 */
1081 export->exp_need_mne_swab = !ptlrpc_req_need_swab(req) &&
1082 !(data->ocd_connect_flags & OBD_CONNECT_MNE_SWAB);
1084 #warning "LU-1644: Remove old OBD_CONNECT_MNE_SWAB fixup and exp_need_mne_swab"
1087 LASSERT(target->u.obt.obt_magic == OBT_MAGIC);
1088 data->ocd_instance = target->u.obt.obt_instance;
1090 /* Return only the parts of obd_connect_data that we understand, so the
1091 * client knows that we don't understand the rest. */
1093 tmpsize = req_capsule_get_size(&req->rq_pill, &RMF_CONNECT_DATA,
1095 tmpdata = req_capsule_server_get(&req->rq_pill,
1097 /* Don't use struct assignment here, because the client reply
1098 * buffer may be smaller/larger than the local struct
1099 * obd_connect_data. */
1100 memcpy(tmpdata, data, min(tmpsize, size));
1103 /* If all else goes well, this is our RPC return code. */
1106 lustre_msg_set_handle(req->rq_repmsg, &conn);
1108 /* If the client and the server are the same node, we will already
1109 * have an export that really points to the client's DLM export,
1110 * because we have a shared handles table.
1112 * XXX this will go away when shaver stops sending the "connect" handle
1113 * in the real "remote handle" field of the request --phik 24 Apr 2003
1115 if (req->rq_export != NULL)
1116 class_export_put(req->rq_export);
1118 /* Request takes one export reference. */
1119 req->rq_export = class_export_get(export);
1121 spin_lock(&export->exp_lock);
1122 if (export->exp_conn_cnt >= lustre_msg_get_conn_cnt(req->rq_reqmsg)) {
1123 spin_unlock(&export->exp_lock);
1124 CDEBUG(D_RPCTRACE, "%s: %s already connected at greater "
1125 "or equal conn_cnt: %d >= %d\n",
1126 cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
1127 export->exp_conn_cnt,
1128 lustre_msg_get_conn_cnt(req->rq_reqmsg));
1130 GOTO(out, rc = -EALREADY);
1132 LASSERT(lustre_msg_get_conn_cnt(req->rq_reqmsg) > 0);
1133 export->exp_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
1134 export->exp_abort_active_req = 0;
1136 /* Don't evict liblustre clients for not pinging. */
1137 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
1138 export->exp_libclient = 1;
1139 spin_unlock(&export->exp_lock);
1141 spin_lock(&target->obd_dev_lock);
1142 cfs_list_del_init(&export->exp_obd_chain_timed);
1143 spin_unlock(&target->obd_dev_lock);
1145 spin_unlock(&export->exp_lock);
1148 if (export->exp_connection != NULL) {
1149 /* Check to see if connection came from another NID. */
1150 if ((export->exp_connection->c_peer.nid != req->rq_peer.nid) &&
1151 !cfs_hlist_unhashed(&export->exp_nid_hash))
1152 cfs_hash_del(export->exp_obd->obd_nid_hash,
1153 &export->exp_connection->c_peer.nid,
1154 &export->exp_nid_hash);
1156 ptlrpc_connection_put(export->exp_connection);
1159 export->exp_connection = ptlrpc_connection_get(req->rq_peer,
1162 if (cfs_hlist_unhashed(&export->exp_nid_hash)) {
1163 cfs_hash_add(export->exp_obd->obd_nid_hash,
1164 &export->exp_connection->c_peer.nid,
1165 &export->exp_nid_hash);
1168 if (target->obd_recovering && !export->exp_in_recovery && !lw_client) {
1170 __u64 transno = data->ocd_transno;
1172 spin_lock(&export->exp_lock);
1173 /* possible race with class_disconnect_stale_exports,
1174 * export may be already in the eviction process */
1175 if (export->exp_failed) {
1176 spin_unlock(&export->exp_lock);
1177 GOTO(out, rc = -ENODEV);
1179 export->exp_in_recovery = 1;
1180 export->exp_req_replay_needed = 1;
1181 export->exp_lock_replay_needed = 1;
1182 spin_unlock(&export->exp_lock);
1184 has_transno = !!(lustre_msg_get_op_flags(req->rq_reqmsg) &
1185 MSG_CONNECT_TRANSNO);
1186 if (has_transno && transno == 0)
1187 CWARN("Connect with zero transno!\n");
1189 if (has_transno && transno > 0 &&
1190 transno < target->obd_next_recovery_transno &&
1191 transno > target->obd_last_committed) {
1192 /* Another way is to use cmpxchg() to be lock-free. */
1193 spin_lock(&target->obd_recovery_task_lock);
1194 if (transno < target->obd_next_recovery_transno)
1195 target->obd_next_recovery_transno = transno;
1196 spin_unlock(&target->obd_recovery_task_lock);
1199 cfs_atomic_inc(&target->obd_req_replay_clients);
1200 cfs_atomic_inc(&target->obd_lock_replay_clients);
1201 if (cfs_atomic_inc_return(&target->obd_connected_clients) ==
1202 target->obd_max_recoverable_clients)
1203 cfs_waitq_signal(&target->obd_next_transno_waitq);
1206 /* Tell the client we're in recovery, when client is involved in it. */
1207 if (target->obd_recovering && !lw_client)
1208 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
1210 tmp = req_capsule_client_get(&req->rq_pill, &RMF_CONN);
1213 /* Return -ENOTCONN in case of errors to let client reconnect. */
1214 revimp = class_new_import(target);
1215 if (revimp == NULL) {
1216 CERROR("fail to alloc new reverse import.\n");
1217 GOTO(out, rc = -ENOTCONN);
1220 spin_lock(&export->exp_lock);
1221 if (export->exp_imp_reverse != NULL)
1222 /* destroyed import can be still referenced in ctxt */
1223 tmp_imp = export->exp_imp_reverse;
1224 export->exp_imp_reverse = revimp;
1225 spin_unlock(&export->exp_lock);
1227 revimp->imp_connection = ptlrpc_connection_addref(export->exp_connection);
1228 revimp->imp_client = &export->exp_obd->obd_ldlm_client;
1229 revimp->imp_remote_handle = conn;
1230 revimp->imp_dlm_fake = 1;
1231 revimp->imp_state = LUSTRE_IMP_FULL;
1233 /* Unknown versions will be caught in
1234 * ptlrpc_handle_server_req_in->lustre_unpack_msg(). */
1235 revimp->imp_msg_magic = req->rq_reqmsg->lm_magic;
1237 if ((data->ocd_connect_flags & OBD_CONNECT_AT) &&
1238 (revimp->imp_msg_magic != LUSTRE_MSG_MAGIC_V1))
1239 revimp->imp_msghdr_flags |= MSGHDR_AT_SUPPORT;
1241 revimp->imp_msghdr_flags &= ~MSGHDR_AT_SUPPORT;
1243 if ((data->ocd_connect_flags & OBD_CONNECT_FULL20) &&
1244 (revimp->imp_msg_magic != LUSTRE_MSG_MAGIC_V1))
1245 revimp->imp_msghdr_flags |= MSGHDR_CKSUM_INCOMPAT18;
1247 revimp->imp_msghdr_flags &= ~MSGHDR_CKSUM_INCOMPAT18;
1249 rc = sptlrpc_import_sec_adapt(revimp, req->rq_svc_ctx, &req->rq_flvr);
1251 CERROR("Failed to get sec for reverse import: %d\n", rc);
1252 spin_lock(&export->exp_lock);
1253 export->exp_imp_reverse = NULL;
1254 spin_unlock(&export->exp_lock);
1255 class_destroy_import(revimp);
1258 class_import_put(revimp);
1261 if (tmp_imp != NULL)
1262 client_destroy_import(tmp_imp);
1264 spin_lock(&export->exp_lock);
1265 export->exp_connecting = 0;
1266 spin_unlock(&export->exp_lock);
1268 class_export_put(export);
1271 spin_lock(&target->obd_dev_lock);
1272 target->obd_conn_inprogress--;
1273 spin_unlock(&target->obd_dev_lock);
1275 class_decref(targref, __func__, cfs_current());
1278 req->rq_status = rc;
1281 EXPORT_SYMBOL(target_handle_connect);
1283 int target_handle_disconnect(struct ptlrpc_request *req)
1288 rc = req_capsule_server_pack(&req->rq_pill);
1292 /* Keep the rq_export around so we can send the reply. */
1293 req->rq_status = obd_disconnect(class_export_get(req->rq_export));
1297 EXPORT_SYMBOL(target_handle_disconnect);
1299 void target_destroy_export(struct obd_export *exp)
1301 struct obd_import *imp = NULL;
1302 /* exports created from last_rcvd data, and "fake"
1303 exports created by lctl don't have an import */
1304 spin_lock(&exp->exp_lock);
1305 if (exp->exp_imp_reverse != NULL) {
1306 imp = exp->exp_imp_reverse;
1307 exp->exp_imp_reverse = NULL;
1309 spin_unlock(&exp->exp_lock);
1311 client_destroy_import(imp);
1313 LASSERT_ATOMIC_ZERO(&exp->exp_locks_count);
1314 LASSERT_ATOMIC_ZERO(&exp->exp_rpc_count);
1315 LASSERT_ATOMIC_ZERO(&exp->exp_cb_count);
1316 LASSERT_ATOMIC_ZERO(&exp->exp_replay_count);
1318 EXPORT_SYMBOL(target_destroy_export);
1321 * Recovery functions
1323 static void target_request_copy_get(struct ptlrpc_request *req)
1325 class_export_rpc_get(req->rq_export);
1326 LASSERT(cfs_list_empty(&req->rq_list));
1327 CFS_INIT_LIST_HEAD(&req->rq_replay_list);
1329 /* Increase refcount to keep request in queue. */
1330 cfs_atomic_inc(&req->rq_refcount);
1331 /* Let export know it has replays to be handled. */
1332 cfs_atomic_inc(&req->rq_export->exp_replay_count);
1335 static void target_request_copy_put(struct ptlrpc_request *req)
1337 LASSERT(cfs_list_empty(&req->rq_replay_list));
1338 LASSERT_ATOMIC_POS(&req->rq_export->exp_replay_count);
1340 cfs_atomic_dec(&req->rq_export->exp_replay_count);
1341 class_export_rpc_put(req->rq_export);
1342 ptlrpc_server_drop_request(req);
1345 static int target_exp_enqueue_req_replay(struct ptlrpc_request *req)
1347 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
1348 struct obd_export *exp = req->rq_export;
1349 struct ptlrpc_request *reqiter;
1354 spin_lock(&exp->exp_lock);
1355 cfs_list_for_each_entry(reqiter, &exp->exp_req_replay_queue,
1357 if (lustre_msg_get_transno(reqiter->rq_reqmsg) == transno) {
1364 /* We expect it with RESENT and REPLAY flags. */
1365 if ((lustre_msg_get_flags(req->rq_reqmsg) &
1366 (MSG_RESENT | MSG_REPLAY)) != (MSG_RESENT | MSG_REPLAY))
1367 CERROR("invalid flags %x of resent replay\n",
1368 lustre_msg_get_flags(req->rq_reqmsg));
1370 cfs_list_add_tail(&req->rq_replay_list,
1371 &exp->exp_req_replay_queue);
1374 spin_unlock(&exp->exp_lock);
1378 static void target_exp_dequeue_req_replay(struct ptlrpc_request *req)
1380 LASSERT(!cfs_list_empty(&req->rq_replay_list));
1381 LASSERT(req->rq_export);
1383 spin_lock(&req->rq_export->exp_lock);
1384 cfs_list_del_init(&req->rq_replay_list);
1385 spin_unlock(&req->rq_export->exp_lock);
1389 static void target_finish_recovery(struct obd_device *obd)
1393 /* Only log a recovery message when recovery has occurred. */
1394 if (obd->obd_recovery_start) {
1395 time_t elapsed_time = max_t(time_t, 1, cfs_time_current_sec() -
1396 obd->obd_recovery_start);
1397 LCONSOLE_INFO("%s: Recovery over after %d:%.02d, of %d clients "
1398 "%d recovered and %d %s evicted.\n", obd->obd_name,
1399 (int)elapsed_time / 60, (int)elapsed_time % 60,
1400 obd->obd_max_recoverable_clients,
1401 cfs_atomic_read(&obd->obd_connected_clients),
1402 obd->obd_stale_clients,
1403 obd->obd_stale_clients == 1 ? "was" : "were");
1406 ldlm_reprocess_all_ns(obd->obd_namespace);
1407 spin_lock(&obd->obd_recovery_task_lock);
1408 if (!cfs_list_empty(&obd->obd_req_replay_queue) ||
1409 !cfs_list_empty(&obd->obd_lock_replay_queue) ||
1410 !cfs_list_empty(&obd->obd_final_req_queue)) {
1411 CERROR("%s: Recovery queues ( %s%s%s) are not empty\n",
1413 cfs_list_empty(&obd->obd_req_replay_queue) ? "" : "req ",
1414 cfs_list_empty(&obd->obd_lock_replay_queue) ? \
1416 cfs_list_empty(&obd->obd_final_req_queue) ? \
1418 spin_unlock(&obd->obd_recovery_task_lock);
1421 spin_unlock(&obd->obd_recovery_task_lock);
1423 obd->obd_recovery_end = cfs_time_current_sec();
1425 /* When recovery finished, cleanup orphans on MDS and OST. */
1426 if (OBT(obd) && OBP(obd, postrecov)) {
1427 int rc = OBP(obd, postrecov)(obd);
1429 LCONSOLE_WARN("%s: Post recovery failed, rc %d\n",
1435 static void abort_req_replay_queue(struct obd_device *obd)
1437 struct ptlrpc_request *req, *n;
1438 cfs_list_t abort_list;
1440 CFS_INIT_LIST_HEAD(&abort_list);
1441 spin_lock(&obd->obd_recovery_task_lock);
1442 cfs_list_splice_init(&obd->obd_req_replay_queue, &abort_list);
1443 spin_unlock(&obd->obd_recovery_task_lock);
1444 cfs_list_for_each_entry_safe(req, n, &abort_list, rq_list) {
1445 DEBUG_REQ(D_WARNING, req, "aborted:");
1446 req->rq_status = -ENOTCONN;
1447 if (ptlrpc_error(req)) {
1448 DEBUG_REQ(D_ERROR, req,
1449 "failed abort_req_reply; skipping");
1451 target_exp_dequeue_req_replay(req);
1452 target_request_copy_put(req);
1456 static void abort_lock_replay_queue(struct obd_device *obd)
1458 struct ptlrpc_request *req, *n;
1459 cfs_list_t abort_list;
1461 CFS_INIT_LIST_HEAD(&abort_list);
1462 spin_lock(&obd->obd_recovery_task_lock);
1463 cfs_list_splice_init(&obd->obd_lock_replay_queue, &abort_list);
1464 spin_unlock(&obd->obd_recovery_task_lock);
1465 cfs_list_for_each_entry_safe(req, n, &abort_list, rq_list){
1466 DEBUG_REQ(D_ERROR, req, "aborted:");
1467 req->rq_status = -ENOTCONN;
1468 if (ptlrpc_error(req)) {
1469 DEBUG_REQ(D_ERROR, req,
1470 "failed abort_lock_reply; skipping");
1472 target_request_copy_put(req);
1476 /* Called from a cleanup function if the device is being cleaned up
1477 forcefully. The exports should all have been disconnected already,
1478 the only thing left to do is
1479 - clear the recovery flags
1481 - free queued requests and replies, but don't send replies
1482 Because the obd_stopping flag is set, no new requests should be received.
1485 void target_cleanup_recovery(struct obd_device *obd)
1487 struct ptlrpc_request *req, *n;
1488 cfs_list_t clean_list;
1491 CFS_INIT_LIST_HEAD(&clean_list);
1492 spin_lock(&obd->obd_dev_lock);
1493 if (!obd->obd_recovering) {
1494 spin_unlock(&obd->obd_dev_lock);
1498 obd->obd_recovering = obd->obd_abort_recovery = 0;
1499 spin_unlock(&obd->obd_dev_lock);
1501 spin_lock(&obd->obd_recovery_task_lock);
1502 target_cancel_recovery_timer(obd);
1503 cfs_list_splice_init(&obd->obd_req_replay_queue, &clean_list);
1504 spin_unlock(&obd->obd_recovery_task_lock);
1506 cfs_list_for_each_entry_safe(req, n, &clean_list, rq_list) {
1507 LASSERT(req->rq_reply_state == 0);
1508 target_exp_dequeue_req_replay(req);
1509 target_request_copy_put(req);
1512 spin_lock(&obd->obd_recovery_task_lock);
1513 cfs_list_splice_init(&obd->obd_lock_replay_queue, &clean_list);
1514 cfs_list_splice_init(&obd->obd_final_req_queue, &clean_list);
1515 spin_unlock(&obd->obd_recovery_task_lock);
1517 cfs_list_for_each_entry_safe(req, n, &clean_list, rq_list){
1518 LASSERT(req->rq_reply_state == 0);
1519 target_request_copy_put(req);
1524 EXPORT_SYMBOL(target_cleanup_recovery);
1526 /* obd_recovery_task_lock should be held */
1527 void target_cancel_recovery_timer(struct obd_device *obd)
1529 CDEBUG(D_HA, "%s: cancel recovery timer\n", obd->obd_name);
1530 cfs_timer_disarm(&obd->obd_recovery_timer);
1532 EXPORT_SYMBOL(target_cancel_recovery_timer);
1534 static void target_start_recovery_timer(struct obd_device *obd)
1536 if (obd->obd_recovery_start != 0)
1539 spin_lock(&obd->obd_dev_lock);
1540 if (!obd->obd_recovering || obd->obd_abort_recovery) {
1541 spin_unlock(&obd->obd_dev_lock);
1545 LASSERT(obd->obd_recovery_timeout != 0);
1547 if (obd->obd_recovery_start != 0) {
1548 spin_unlock(&obd->obd_dev_lock);
1552 cfs_timer_arm(&obd->obd_recovery_timer,
1553 cfs_time_shift(obd->obd_recovery_timeout));
1554 obd->obd_recovery_start = cfs_time_current_sec();
1555 spin_unlock(&obd->obd_dev_lock);
1557 LCONSOLE_WARN("%s: Will be in recovery for at least %d:%.02d, "
1558 "or until %d client%s reconnect%s\n",
1560 obd->obd_recovery_timeout / 60,
1561 obd->obd_recovery_timeout % 60,
1562 obd->obd_max_recoverable_clients,
1563 (obd->obd_max_recoverable_clients == 1) ? "" : "s",
1564 (obd->obd_max_recoverable_clients == 1) ? "s": "");
1568 * extend recovery window.
1570 * if @extend is true, extend recovery window to have @drt remaining at least;
1571 * otherwise, make sure the recovery timeout value is not less than @drt.
1573 static void extend_recovery_timer(struct obd_device *obd, int drt, bool extend)
1577 cfs_duration_t left;
1580 spin_lock(&obd->obd_dev_lock);
1581 if (!obd->obd_recovering || obd->obd_abort_recovery) {
1582 spin_unlock(&obd->obd_dev_lock);
1585 LASSERT(obd->obd_recovery_start != 0);
1587 now = cfs_time_current_sec();
1588 to = obd->obd_recovery_timeout;
1589 end = obd->obd_recovery_start + to;
1590 left = cfs_time_sub(end, now);
1592 if (extend && (drt > left)) {
1594 } else if (!extend && (drt > to)) {
1596 /* reduce drt by already passed time */
1597 drt -= obd->obd_recovery_timeout - left;
1600 if (to > obd->obd_recovery_time_hard)
1601 to = obd->obd_recovery_time_hard;
1602 if (obd->obd_recovery_timeout < to ||
1603 obd->obd_recovery_timeout == obd->obd_recovery_time_hard) {
1604 obd->obd_recovery_timeout = to;
1605 cfs_timer_arm(&obd->obd_recovery_timer,
1606 cfs_time_shift(drt));
1608 spin_unlock(&obd->obd_dev_lock);
1610 CDEBUG(D_HA, "%s: recovery timer will expire in %u seconds\n",
1611 obd->obd_name, (unsigned)drt);
1614 /* Reset the timer with each new client connection */
1616 * This timer is actually reconnect_timer, which is for making sure
1617 * the total recovery window is at least as big as my reconnect
1618 * attempt timing. So the initial recovery time_out will be set to
1619 * OBD_RECOVERY_FACTOR * obd_timeout. If the timeout coming
1620 * from client is bigger than this, then the recovery time_out will
1621 * be extended to make sure the client could be reconnected, in the
1622 * process, the timeout from the new client should be ignored.
1626 check_and_start_recovery_timer(struct obd_device *obd,
1627 struct ptlrpc_request *req,
1630 int service_time = lustre_msg_get_service_time(req->rq_reqmsg);
1631 struct obd_device_target *obt = &obd->u.obt;
1632 struct lustre_sb_info *lsi;
1634 if (!new_client && service_time)
1635 /* Teach server about old server's estimates, as first guess
1636 * at how long new requests will take. */
1637 at_measured(&req->rq_rqbd->rqbd_svcpt->scp_at_estimate,
1640 target_start_recovery_timer(obd);
1642 /* Convert the service time to RPC timeout,
1643 * and reuse service_time to limit stack usage. */
1644 service_time = at_est2timeout(service_time);
1646 /* We expect other clients to timeout within service_time, then try
1647 * to reconnect, then try the failover server. The max delay between
1648 * connect attempts is SWITCH_MAX + SWITCH_INC + INITIAL. */
1649 service_time += 2 * INITIAL_CONNECT_TIMEOUT;
1651 LASSERT(obt->obt_magic == OBT_MAGIC);
1652 lsi = s2lsi(obt->obt_sb);
1653 if (!(lsi->lsi_flags | LDD_F_IR_CAPABLE))
1654 service_time += 2 * (CONNECTION_SWITCH_MAX +
1655 CONNECTION_SWITCH_INC);
1656 if (service_time > obd->obd_recovery_timeout && !new_client)
1657 extend_recovery_timer(obd, service_time, false);
1660 /** Health checking routines */
1661 static inline int exp_connect_healthy(struct obd_export *exp)
1663 return (exp->exp_in_recovery);
1666 /** if export done req_replay or has replay in queue */
1667 static inline int exp_req_replay_healthy(struct obd_export *exp)
1669 return (!exp->exp_req_replay_needed ||
1670 cfs_atomic_read(&exp->exp_replay_count) > 0);
1672 /** if export done lock_replay or has replay in queue */
1673 static inline int exp_lock_replay_healthy(struct obd_export *exp)
1675 return (!exp->exp_lock_replay_needed ||
1676 cfs_atomic_read(&exp->exp_replay_count) > 0);
1679 static inline int exp_vbr_healthy(struct obd_export *exp)
1681 return (!exp->exp_vbr_failed);
1684 static inline int exp_finished(struct obd_export *exp)
1686 return (exp->exp_in_recovery && !exp->exp_lock_replay_needed);
1689 /** Checking routines for recovery */
1690 static int check_for_clients(struct obd_device *obd)
1692 unsigned int clnts = cfs_atomic_read(&obd->obd_connected_clients);
1694 if (obd->obd_abort_recovery || obd->obd_recovery_expired)
1696 LASSERT(clnts <= obd->obd_max_recoverable_clients);
1697 return (clnts + obd->obd_stale_clients ==
1698 obd->obd_max_recoverable_clients);
1701 static int check_for_next_transno(struct obd_device *obd)
1703 struct ptlrpc_request *req = NULL;
1704 int wake_up = 0, connected, completed, queue_len;
1705 __u64 next_transno, req_transno;
1708 spin_lock(&obd->obd_recovery_task_lock);
1709 if (!cfs_list_empty(&obd->obd_req_replay_queue)) {
1710 req = cfs_list_entry(obd->obd_req_replay_queue.next,
1711 struct ptlrpc_request, rq_list);
1712 req_transno = lustre_msg_get_transno(req->rq_reqmsg);
1717 connected = cfs_atomic_read(&obd->obd_connected_clients);
1718 completed = connected - cfs_atomic_read(&obd->obd_req_replay_clients);
1719 queue_len = obd->obd_requests_queued_for_recovery;
1720 next_transno = obd->obd_next_recovery_transno;
1722 CDEBUG(D_HA, "max: %d, connected: %d, completed: %d, queue_len: %d, "
1723 "req_transno: "LPU64", next_transno: "LPU64"\n",
1724 obd->obd_max_recoverable_clients, connected, completed,
1725 queue_len, req_transno, next_transno);
1727 if (obd->obd_abort_recovery) {
1728 CDEBUG(D_HA, "waking for aborted recovery\n");
1730 } else if (obd->obd_recovery_expired) {
1731 CDEBUG(D_HA, "waking for expired recovery\n");
1733 } else if (req_transno == next_transno) {
1734 CDEBUG(D_HA, "waking for next ("LPD64")\n", next_transno);
1736 } else if (queue_len > 0 &&
1737 queue_len == cfs_atomic_read(&obd->obd_req_replay_clients)) {
1739 /** handle gaps occured due to lost reply or VBR */
1740 LASSERTF(req_transno >= next_transno,
1741 "req_transno: "LPU64", next_transno: "LPU64"\n",
1742 req_transno, next_transno);
1743 if (req_transno > obd->obd_last_committed &&
1744 !obd->obd_version_recov)
1747 "%s: waking for gap in transno, VBR is %s (skip: "
1748 LPD64", ql: %d, comp: %d, conn: %d, next: "LPD64
1749 ", last_committed: "LPD64")\n",
1750 obd->obd_name, obd->obd_version_recov ? "ON" : "OFF",
1751 next_transno, queue_len, completed, connected,
1752 req_transno, obd->obd_last_committed);
1753 obd->obd_next_recovery_transno = req_transno;
1755 } else if (cfs_atomic_read(&obd->obd_req_replay_clients) == 0) {
1756 CDEBUG(D_HA, "waking for completed recovery\n");
1758 } else if (OBD_FAIL_CHECK(OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS)) {
1759 CDEBUG(D_HA, "accepting transno gaps is explicitly allowed"
1760 " by fail_lock, waking up ("LPD64")\n", next_transno);
1761 obd->obd_next_recovery_transno = req_transno;
1764 spin_unlock(&obd->obd_recovery_task_lock);
1768 static int check_for_next_lock(struct obd_device *obd)
1772 spin_lock(&obd->obd_recovery_task_lock);
1773 if (!cfs_list_empty(&obd->obd_lock_replay_queue)) {
1774 CDEBUG(D_HA, "waking for next lock\n");
1776 } else if (cfs_atomic_read(&obd->obd_lock_replay_clients) == 0) {
1777 CDEBUG(D_HA, "waking for completed lock replay\n");
1779 } else if (obd->obd_abort_recovery) {
1780 CDEBUG(D_HA, "waking for aborted recovery\n");
1782 } else if (obd->obd_recovery_expired) {
1783 CDEBUG(D_HA, "waking for expired recovery\n");
1786 spin_unlock(&obd->obd_recovery_task_lock);
1792 * wait for recovery events,
1793 * check its status with help of check_routine
1794 * evict dead clients via health_check
1796 static int target_recovery_overseer(struct obd_device *obd,
1797 int (*check_routine)(struct obd_device *),
1798 int (*health_check)(struct obd_export *))
1801 cfs_wait_event(obd->obd_next_transno_waitq, check_routine(obd));
1802 if (obd->obd_abort_recovery) {
1803 CWARN("recovery is aborted, evict exports in recovery\n");
1804 /** evict exports which didn't finish recovery yet */
1805 class_disconnect_stale_exports(obd, exp_finished);
1807 } else if (obd->obd_recovery_expired) {
1808 obd->obd_recovery_expired = 0;
1809 /** If some clients died being recovered, evict them */
1810 LCONSOLE_WARN("%s: recovery is timed out, "
1811 "evict stale exports\n", obd->obd_name);
1812 /** evict cexports with no replay in queue, they are stalled */
1813 class_disconnect_stale_exports(obd, health_check);
1814 /** continue with VBR */
1815 spin_lock(&obd->obd_dev_lock);
1816 obd->obd_version_recov = 1;
1817 spin_unlock(&obd->obd_dev_lock);
1819 * reset timer, recovery will proceed with versions now,
1820 * timeout is set just to handle reconnection delays
1822 extend_recovery_timer(obd, RECONNECT_DELAY_MAX, true);
1823 /** Wait for recovery events again, after evicting bad clients */
1829 static struct ptlrpc_request *target_next_replay_req(struct obd_device *obd)
1831 struct ptlrpc_request *req = NULL;
1834 CDEBUG(D_HA, "Waiting for transno "LPD64"\n",
1835 obd->obd_next_recovery_transno);
1837 if (target_recovery_overseer(obd, check_for_next_transno,
1838 exp_req_replay_healthy)) {
1839 abort_req_replay_queue(obd);
1840 abort_lock_replay_queue(obd);
1843 spin_lock(&obd->obd_recovery_task_lock);
1844 if (!cfs_list_empty(&obd->obd_req_replay_queue)) {
1845 req = cfs_list_entry(obd->obd_req_replay_queue.next,
1846 struct ptlrpc_request, rq_list);
1847 cfs_list_del_init(&req->rq_list);
1848 obd->obd_requests_queued_for_recovery--;
1849 spin_unlock(&obd->obd_recovery_task_lock);
1851 spin_unlock(&obd->obd_recovery_task_lock);
1852 LASSERT(cfs_list_empty(&obd->obd_req_replay_queue));
1853 LASSERT(cfs_atomic_read(&obd->obd_req_replay_clients) == 0);
1854 /** evict exports failed VBR */
1855 class_disconnect_stale_exports(obd, exp_vbr_healthy);
1860 static struct ptlrpc_request *target_next_replay_lock(struct obd_device *obd)
1862 struct ptlrpc_request *req = NULL;
1864 CDEBUG(D_HA, "Waiting for lock\n");
1865 if (target_recovery_overseer(obd, check_for_next_lock,
1866 exp_lock_replay_healthy))
1867 abort_lock_replay_queue(obd);
1869 spin_lock(&obd->obd_recovery_task_lock);
1870 if (!cfs_list_empty(&obd->obd_lock_replay_queue)) {
1871 req = cfs_list_entry(obd->obd_lock_replay_queue.next,
1872 struct ptlrpc_request, rq_list);
1873 cfs_list_del_init(&req->rq_list);
1874 spin_unlock(&obd->obd_recovery_task_lock);
1876 spin_unlock(&obd->obd_recovery_task_lock);
1877 LASSERT(cfs_list_empty(&obd->obd_lock_replay_queue));
1878 LASSERT(cfs_atomic_read(&obd->obd_lock_replay_clients) == 0);
1879 /** evict exports failed VBR */
1880 class_disconnect_stale_exports(obd, exp_vbr_healthy);
1885 static struct ptlrpc_request *target_next_final_ping(struct obd_device *obd)
1887 struct ptlrpc_request *req = NULL;
1889 spin_lock(&obd->obd_recovery_task_lock);
1890 if (!cfs_list_empty(&obd->obd_final_req_queue)) {
1891 req = cfs_list_entry(obd->obd_final_req_queue.next,
1892 struct ptlrpc_request, rq_list);
1893 cfs_list_del_init(&req->rq_list);
1894 spin_unlock(&obd->obd_recovery_task_lock);
1895 if (req->rq_export->exp_in_recovery) {
1896 spin_lock(&req->rq_export->exp_lock);
1897 req->rq_export->exp_in_recovery = 0;
1898 spin_unlock(&req->rq_export->exp_lock);
1901 spin_unlock(&obd->obd_recovery_task_lock);
1906 static int handle_recovery_req(struct ptlrpc_thread *thread,
1907 struct ptlrpc_request *req,
1908 svc_handler_t handler)
1914 * export can be evicted during recovery, no need to handle replays for
1915 * it after that, discard such request silently
1917 if (req->rq_export->exp_disconnected)
1918 GOTO(reqcopy_put, rc = 0);
1920 rc = lu_context_init(&req->rq_recov_session, LCT_SESSION);
1922 CERROR("Failure to initialize session: %d\n", rc);
1923 GOTO(reqcopy_put, rc);
1926 req->rq_recov_session.lc_thread = thread;
1927 lu_context_enter(&req->rq_recov_session);
1928 req->rq_svc_thread = thread;
1929 req->rq_svc_thread->t_env->le_ses = &req->rq_recov_session;
1931 /* thread context */
1932 lu_context_enter(&thread->t_env->le_ctx);
1934 lu_context_exit(&thread->t_env->le_ctx);
1936 lu_context_exit(&req->rq_recov_session);
1937 lu_context_fini(&req->rq_recov_session);
1938 /* don't reset timer for final stage */
1939 if (!exp_finished(req->rq_export)) {
1940 int to = obd_timeout;
1943 * Add request timeout to the recovery time so next request from
1944 * this client may come in recovery time
1947 struct ptlrpc_service_part *svcpt;
1949 svcpt = req->rq_rqbd->rqbd_svcpt;
1950 /* If the server sent early reply for this request,
1951 * the client will recalculate the timeout according to
1952 * current server estimate service time, so we will
1953 * use the maxium timeout here for waiting the client
1954 * sending the next req */
1955 to = max((int)at_est2timeout(
1956 at_get(&svcpt->scp_at_estimate)),
1957 (int)lustre_msg_get_timeout(req->rq_reqmsg));
1958 /* Add 2 net_latency, one for balance rq_deadline
1959 * (see ptl_send_rpc), one for resend the req to server,
1960 * Note: client will pack net_latency in replay req
1961 * (see ptlrpc_replay_req) */
1962 to += 2 * lustre_msg_get_service_time(req->rq_reqmsg);
1964 extend_recovery_timer(class_exp2obd(req->rq_export), to, true);
1970 static int target_recovery_thread(void *arg)
1972 struct lu_target *lut = arg;
1973 struct obd_device *obd = lut->lut_obd;
1974 struct ptlrpc_request *req;
1975 struct target_recovery_data *trd = &obd->obd_recovery_data;
1976 unsigned long delta;
1977 unsigned long flags;
1979 struct ptlrpc_thread *thread = NULL;
1983 cfs_daemonize_ctxt("tgt_recov");
1985 SIGNAL_MASK_LOCK(current, flags);
1986 sigfillset(¤t->blocked);
1988 SIGNAL_MASK_UNLOCK(current, flags);
1990 OBD_ALLOC_PTR(thread);
1996 OBD_FREE_PTR(thread);
2000 rc = lu_context_init(&env->le_ctx, LCT_MD_THREAD | LCT_DT_THREAD);
2002 OBD_FREE_PTR(thread);
2007 thread->t_env = env;
2008 thread->t_id = -1; /* force filter_iobuf_get/put to use local buffers */
2009 env->le_ctx.lc_thread = thread;
2010 thread->t_data = NULL;
2011 thread->t_watchdog = NULL;
2013 CDEBUG(D_HA, "%s: started recovery thread pid %d\n", obd->obd_name,
2015 trd->trd_processing_task = cfs_curproc_pid();
2017 spin_lock(&obd->obd_dev_lock);
2018 obd->obd_recovering = 1;
2019 spin_unlock(&obd->obd_dev_lock);
2020 complete(&trd->trd_starting);
2022 /* first of all, we have to know the first transno to replay */
2023 if (target_recovery_overseer(obd, check_for_clients,
2024 exp_connect_healthy)) {
2025 abort_req_replay_queue(obd);
2026 abort_lock_replay_queue(obd);
2029 /* next stage: replay requests */
2031 CDEBUG(D_INFO, "1: request replay stage - %d clients from t"LPU64"\n",
2032 cfs_atomic_read(&obd->obd_req_replay_clients),
2033 obd->obd_next_recovery_transno);
2034 while ((req = target_next_replay_req(obd))) {
2035 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2036 DEBUG_REQ(D_HA, req, "processing t"LPD64" from %s",
2037 lustre_msg_get_transno(req->rq_reqmsg),
2038 libcfs_nid2str(req->rq_peer.nid));
2039 handle_recovery_req(thread, req,
2040 trd->trd_recovery_handler);
2042 * bz18031: increase next_recovery_transno before
2043 * target_request_copy_put() will drop exp_rpc reference
2045 spin_lock(&obd->obd_recovery_task_lock);
2046 obd->obd_next_recovery_transno++;
2047 spin_unlock(&obd->obd_recovery_task_lock);
2048 target_exp_dequeue_req_replay(req);
2049 target_request_copy_put(req);
2050 obd->obd_replayed_requests++;
2054 * The second stage: replay locks
2056 CDEBUG(D_INFO, "2: lock replay stage - %d clients\n",
2057 cfs_atomic_read(&obd->obd_lock_replay_clients));
2058 while ((req = target_next_replay_lock(obd))) {
2059 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2060 DEBUG_REQ(D_HA, req, "processing lock from %s: ",
2061 libcfs_nid2str(req->rq_peer.nid));
2062 handle_recovery_req(thread, req,
2063 trd->trd_recovery_handler);
2064 target_request_copy_put(req);
2065 obd->obd_replayed_locks++;
2069 * The third stage: reply on final pings, at this moment all clients
2070 * must have request in final queue
2072 CDEBUG(D_INFO, "3: final stage - process recovery completion pings\n");
2073 /** Update server last boot epoch */
2074 tgt_boot_epoch_update(lut);
2075 /* We drop recoverying flag to forward all new requests
2076 * to regular mds_handle() since now */
2077 spin_lock(&obd->obd_dev_lock);
2078 obd->obd_recovering = obd->obd_abort_recovery = 0;
2079 spin_unlock(&obd->obd_dev_lock);
2080 spin_lock(&obd->obd_recovery_task_lock);
2081 target_cancel_recovery_timer(obd);
2082 spin_unlock(&obd->obd_recovery_task_lock);
2083 while ((req = target_next_final_ping(obd))) {
2084 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2085 DEBUG_REQ(D_HA, req, "processing final ping from %s: ",
2086 libcfs_nid2str(req->rq_peer.nid));
2087 handle_recovery_req(thread, req,
2088 trd->trd_recovery_handler);
2089 target_request_copy_put(req);
2092 delta = (jiffies - delta) / CFS_HZ;
2093 CDEBUG(D_INFO,"4: recovery completed in %lus - %d/%d reqs/locks\n",
2094 delta, obd->obd_replayed_requests, obd->obd_replayed_locks);
2095 if (delta > OBD_RECOVERY_TIME_SOFT) {
2096 CWARN("too long recovery - read logs\n");
2097 libcfs_debug_dumplog();
2100 target_finish_recovery(obd);
2102 lu_context_fini(&env->le_ctx);
2103 trd->trd_processing_task = 0;
2104 complete(&trd->trd_finishing);
2106 OBD_FREE_PTR(thread);
2111 static int target_start_recovery_thread(struct lu_target *lut,
2112 svc_handler_t handler)
2114 struct obd_device *obd = lut->lut_obd;
2116 struct target_recovery_data *trd = &obd->obd_recovery_data;
2118 memset(trd, 0, sizeof(*trd));
2119 init_completion(&trd->trd_starting);
2120 init_completion(&trd->trd_finishing);
2121 trd->trd_recovery_handler = handler;
2123 if (cfs_create_thread(target_recovery_thread, lut, 0) > 0) {
2124 wait_for_completion(&trd->trd_starting);
2125 LASSERT(obd->obd_recovering != 0);
2132 void target_stop_recovery_thread(struct obd_device *obd)
2134 if (obd->obd_recovery_data.trd_processing_task > 0) {
2135 struct target_recovery_data *trd = &obd->obd_recovery_data;
2136 /** recovery can be done but postrecovery is not yet */
2137 spin_lock(&obd->obd_dev_lock);
2138 if (obd->obd_recovering) {
2139 CERROR("%s: Aborting recovery\n", obd->obd_name);
2140 obd->obd_abort_recovery = 1;
2141 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2143 spin_unlock(&obd->obd_dev_lock);
2144 wait_for_completion(&trd->trd_finishing);
2147 EXPORT_SYMBOL(target_stop_recovery_thread);
2149 void target_recovery_fini(struct obd_device *obd)
2151 class_disconnect_exports(obd);
2152 target_stop_recovery_thread(obd);
2153 target_cleanup_recovery(obd);
2155 EXPORT_SYMBOL(target_recovery_fini);
2157 static void target_recovery_expired(unsigned long castmeharder)
2159 struct obd_device *obd = (struct obd_device *)castmeharder;
2160 CDEBUG(D_HA, "%s: recovery timed out; %d clients are still in recovery"
2161 " after %lds (%d clients connected)\n",
2162 obd->obd_name, cfs_atomic_read(&obd->obd_lock_replay_clients),
2163 cfs_time_current_sec()- obd->obd_recovery_start,
2164 cfs_atomic_read(&obd->obd_connected_clients));
2166 obd->obd_recovery_expired = 1;
2167 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2170 void target_recovery_init(struct lu_target *lut, svc_handler_t handler)
2172 struct obd_device *obd = lut->lut_obd;
2173 if (obd->obd_max_recoverable_clients == 0) {
2174 /** Update server last boot epoch */
2175 tgt_boot_epoch_update(lut);
2179 CDEBUG(D_HA, "RECOVERY: service %s, %d recoverable clients, "
2180 "last_transno "LPU64"\n", obd->obd_name,
2181 obd->obd_max_recoverable_clients, obd->obd_last_committed);
2182 LASSERT(obd->obd_stopping == 0);
2183 obd->obd_next_recovery_transno = obd->obd_last_committed + 1;
2184 obd->obd_recovery_start = 0;
2185 obd->obd_recovery_end = 0;
2187 cfs_timer_init(&obd->obd_recovery_timer, target_recovery_expired, obd);
2188 target_start_recovery_thread(lut, handler);
2190 EXPORT_SYMBOL(target_recovery_init);
2192 #endif /* __KERNEL__ */
2194 static int target_process_req_flags(struct obd_device *obd,
2195 struct ptlrpc_request *req)
2197 struct obd_export *exp = req->rq_export;
2198 LASSERT(exp != NULL);
2199 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REQ_REPLAY_DONE) {
2200 /* client declares he's ready to replay locks */
2201 spin_lock(&exp->exp_lock);
2202 if (exp->exp_req_replay_needed) {
2203 exp->exp_req_replay_needed = 0;
2204 spin_unlock(&exp->exp_lock);
2206 LASSERT_ATOMIC_POS(&obd->obd_req_replay_clients);
2207 cfs_atomic_dec(&obd->obd_req_replay_clients);
2209 spin_unlock(&exp->exp_lock);
2212 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LOCK_REPLAY_DONE) {
2213 /* client declares he's ready to complete recovery
2214 * so, we put the request on th final queue */
2215 spin_lock(&exp->exp_lock);
2216 if (exp->exp_lock_replay_needed) {
2217 exp->exp_lock_replay_needed = 0;
2218 spin_unlock(&exp->exp_lock);
2220 LASSERT_ATOMIC_POS(&obd->obd_lock_replay_clients);
2221 cfs_atomic_dec(&obd->obd_lock_replay_clients);
2223 spin_unlock(&exp->exp_lock);
2229 int target_queue_recovery_request(struct ptlrpc_request *req,
2230 struct obd_device *obd)
2234 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
2237 if (obd->obd_recovery_data.trd_processing_task == cfs_curproc_pid()) {
2238 /* Processing the queue right now, don't re-add. */
2242 target_process_req_flags(obd, req);
2244 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LOCK_REPLAY_DONE) {
2245 /* client declares he's ready to complete recovery
2246 * so, we put the request on th final queue */
2247 target_request_copy_get(req);
2248 DEBUG_REQ(D_HA, req, "queue final req");
2249 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2250 spin_lock(&obd->obd_recovery_task_lock);
2251 if (obd->obd_recovering) {
2252 cfs_list_add_tail(&req->rq_list,
2253 &obd->obd_final_req_queue);
2255 spin_unlock(&obd->obd_recovery_task_lock);
2256 target_request_copy_put(req);
2257 RETURN(obd->obd_stopping ? -ENOTCONN : 1);
2259 spin_unlock(&obd->obd_recovery_task_lock);
2262 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REQ_REPLAY_DONE) {
2263 /* client declares he's ready to replay locks */
2264 target_request_copy_get(req);
2265 DEBUG_REQ(D_HA, req, "queue lock replay req");
2266 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2267 spin_lock(&obd->obd_recovery_task_lock);
2268 LASSERT(obd->obd_recovering);
2269 /* usually due to recovery abort */
2270 if (!req->rq_export->exp_in_recovery) {
2271 spin_unlock(&obd->obd_recovery_task_lock);
2272 target_request_copy_put(req);
2275 LASSERT(req->rq_export->exp_lock_replay_needed);
2276 cfs_list_add_tail(&req->rq_list, &obd->obd_lock_replay_queue);
2277 spin_unlock(&obd->obd_recovery_task_lock);
2281 /* CAVEAT EMPTOR: The incoming request message has been swabbed
2282 * (i.e. buflens etc are in my own byte order), but type-dependent
2283 * buffers (eg mdt_body, ost_body etc) have NOT been swabbed. */
2286 CFS_INIT_LIST_HEAD(&req->rq_list);
2287 DEBUG_REQ(D_HA, req, "not queueing");
2291 /* If we're processing the queue, we want don't want to queue this
2294 * Also, if this request has a transno less than the one we're waiting
2295 * for, we should process it now. It could (and currently always will)
2296 * be an open request for a descriptor that was opened some time ago.
2298 * Also, a resent, replayed request that has already been
2299 * handled will pass through here and be processed immediately.
2301 CDEBUG(D_HA, "Next recovery transno: "LPU64
2302 ", current: "LPU64", replaying\n",
2303 obd->obd_next_recovery_transno, transno);
2304 spin_lock(&obd->obd_recovery_task_lock);
2305 if (transno < obd->obd_next_recovery_transno) {
2306 /* Processing the queue right now, don't re-add. */
2307 LASSERT(cfs_list_empty(&req->rq_list));
2308 spin_unlock(&obd->obd_recovery_task_lock);
2311 spin_unlock(&obd->obd_recovery_task_lock);
2313 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_REPLAY_DROP))
2316 target_request_copy_get(req);
2317 if (!req->rq_export->exp_in_recovery) {
2318 target_request_copy_put(req);
2321 LASSERT(req->rq_export->exp_req_replay_needed);
2323 if (target_exp_enqueue_req_replay(req)) {
2324 DEBUG_REQ(D_ERROR, req, "dropping resent queued req");
2325 target_request_copy_put(req);
2330 spin_lock(&obd->obd_recovery_task_lock);
2331 LASSERT(obd->obd_recovering);
2332 cfs_list_for_each(tmp, &obd->obd_req_replay_queue) {
2333 struct ptlrpc_request *reqiter =
2334 cfs_list_entry(tmp, struct ptlrpc_request, rq_list);
2336 if (lustre_msg_get_transno(reqiter->rq_reqmsg) > transno) {
2337 cfs_list_add_tail(&req->rq_list, &reqiter->rq_list);
2342 if (unlikely(lustre_msg_get_transno(reqiter->rq_reqmsg) ==
2344 DEBUG_REQ(D_ERROR, req, "dropping replay: transno "
2345 "has been claimed by another client");
2346 spin_unlock(&obd->obd_recovery_task_lock);
2347 target_exp_dequeue_req_replay(req);
2348 target_request_copy_put(req);
2354 cfs_list_add_tail(&req->rq_list, &obd->obd_req_replay_queue);
2356 obd->obd_requests_queued_for_recovery++;
2357 spin_unlock(&obd->obd_recovery_task_lock);
2358 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2361 EXPORT_SYMBOL(target_queue_recovery_request);
2363 int target_handle_ping(struct ptlrpc_request *req)
2365 obd_ping(req->rq_svc_thread->t_env, req->rq_export);
2366 return req_capsule_server_pack(&req->rq_pill);
2368 EXPORT_SYMBOL(target_handle_ping);
2370 void target_committed_to_req(struct ptlrpc_request *req)
2372 struct obd_export *exp = req->rq_export;
2374 if (!exp->exp_obd->obd_no_transno && req->rq_repmsg != NULL)
2375 lustre_msg_set_last_committed(req->rq_repmsg,
2376 exp->exp_last_committed);
2378 DEBUG_REQ(D_IOCTL, req, "not sending last_committed update (%d/"
2379 "%d)", exp->exp_obd->obd_no_transno,
2380 req->rq_repmsg == NULL);
2382 CDEBUG(D_INFO, "last_committed "LPU64", transno "LPU64", xid "LPU64"\n",
2383 exp->exp_last_committed, req->rq_transno, req->rq_xid);
2385 EXPORT_SYMBOL(target_committed_to_req);
2387 #endif /* HAVE_SERVER_SUPPORT */
2390 * Packs current SLV and Limit into \a req.
2392 int target_pack_pool_reply(struct ptlrpc_request *req)
2394 struct obd_device *obd;
2397 /* Check that we still have all structures alive as this may
2398 * be some late RPC at shutdown time. */
2399 if (unlikely(!req->rq_export || !req->rq_export->exp_obd ||
2400 !exp_connect_lru_resize(req->rq_export))) {
2401 lustre_msg_set_slv(req->rq_repmsg, 0);
2402 lustre_msg_set_limit(req->rq_repmsg, 0);
2406 /* OBD is alive here as export is alive, which we checked above. */
2407 obd = req->rq_export->exp_obd;
2409 read_lock(&obd->obd_pool_lock);
2410 lustre_msg_set_slv(req->rq_repmsg, obd->obd_pool_slv);
2411 lustre_msg_set_limit(req->rq_repmsg, obd->obd_pool_limit);
2412 read_unlock(&obd->obd_pool_lock);
2416 EXPORT_SYMBOL(target_pack_pool_reply);
2418 int target_send_reply_msg(struct ptlrpc_request *req, int rc, int fail_id)
2420 if (OBD_FAIL_CHECK_ORSET(fail_id & ~OBD_FAIL_ONCE, OBD_FAIL_ONCE)) {
2421 DEBUG_REQ(D_ERROR, req, "dropping reply");
2426 DEBUG_REQ(D_NET, req, "processing error (%d)", rc);
2427 req->rq_status = rc;
2428 return (ptlrpc_send_error(req, 1));
2430 DEBUG_REQ(D_NET, req, "sending reply");
2433 return (ptlrpc_send_reply(req, PTLRPC_REPLY_MAYBE_DIFFICULT));
2436 void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
2438 struct ptlrpc_service_part *svcpt;
2440 struct ptlrpc_reply_state *rs;
2441 struct obd_export *exp;
2444 if (req->rq_no_reply) {
2449 svcpt = req->rq_rqbd->rqbd_svcpt;
2450 rs = req->rq_reply_state;
2451 if (rs == NULL || !rs->rs_difficult) {
2453 target_send_reply_msg (req, rc, fail_id);
2458 /* must be an export if locks saved */
2459 LASSERT (req->rq_export != NULL);
2460 /* req/reply consistent */
2461 LASSERT(rs->rs_svcpt == svcpt);
2464 LASSERT (!rs->rs_scheduled);
2465 LASSERT (!rs->rs_scheduled_ever);
2466 LASSERT (!rs->rs_handled);
2467 LASSERT (!rs->rs_on_net);
2468 LASSERT (rs->rs_export == NULL);
2469 LASSERT (cfs_list_empty(&rs->rs_obd_list));
2470 LASSERT (cfs_list_empty(&rs->rs_exp_list));
2472 exp = class_export_get (req->rq_export);
2474 /* disable reply scheduling while I'm setting up */
2475 rs->rs_scheduled = 1;
2477 rs->rs_xid = req->rq_xid;
2478 rs->rs_transno = req->rq_transno;
2479 rs->rs_export = exp;
2480 rs->rs_opc = lustre_msg_get_opc(req->rq_reqmsg);
2482 spin_lock(&exp->exp_uncommitted_replies_lock);
2483 CDEBUG(D_NET, "rs transno = "LPU64", last committed = "LPU64"\n",
2484 rs->rs_transno, exp->exp_last_committed);
2485 if (rs->rs_transno > exp->exp_last_committed) {
2486 /* not committed already */
2487 cfs_list_add_tail(&rs->rs_obd_list,
2488 &exp->exp_uncommitted_replies);
2490 spin_unlock(&exp->exp_uncommitted_replies_lock);
2492 spin_lock(&exp->exp_lock);
2493 cfs_list_add_tail(&rs->rs_exp_list, &exp->exp_outstanding_replies);
2494 spin_unlock(&exp->exp_lock);
2496 netrc = target_send_reply_msg(req, rc, fail_id);
2498 spin_lock(&svcpt->scp_rep_lock);
2500 cfs_atomic_inc(&svcpt->scp_nreps_difficult);
2503 /* error sending: reply is off the net. Also we need +1
2504 * reply ref until ptlrpc_handle_rs() is done
2505 * with the reply state (if the send was successful, there
2506 * would have been +1 ref for the net, which
2507 * reply_out_callback leaves alone) */
2509 ptlrpc_rs_addref(rs);
2512 spin_lock(&rs->rs_lock);
2513 if (rs->rs_transno <= exp->exp_last_committed ||
2514 (!rs->rs_on_net && !rs->rs_no_ack) ||
2515 cfs_list_empty(&rs->rs_exp_list) || /* completed already */
2516 cfs_list_empty(&rs->rs_obd_list)) {
2517 CDEBUG(D_HA, "Schedule reply immediately\n");
2518 ptlrpc_dispatch_difficult_reply(rs);
2520 cfs_list_add(&rs->rs_list, &svcpt->scp_rep_active);
2521 rs->rs_scheduled = 0; /* allow notifier to schedule */
2523 spin_unlock(&rs->rs_lock);
2524 spin_unlock(&svcpt->scp_rep_lock);
2527 EXPORT_SYMBOL(target_send_reply);
2529 ldlm_mode_t lck_compat_array[] = {
2530 [LCK_EX] LCK_COMPAT_EX,
2531 [LCK_PW] LCK_COMPAT_PW,
2532 [LCK_PR] LCK_COMPAT_PR,
2533 [LCK_CW] LCK_COMPAT_CW,
2534 [LCK_CR] LCK_COMPAT_CR,
2535 [LCK_NL] LCK_COMPAT_NL,
2536 [LCK_GROUP] LCK_COMPAT_GROUP,
2537 [LCK_COS] LCK_COMPAT_COS,
2541 * Rather arbitrary mapping from LDLM error codes to errno values. This should
2542 * not escape to the user level.
2544 int ldlm_error2errno(ldlm_error_t error)
2552 case ELDLM_LOCK_CHANGED:
2555 case ELDLM_LOCK_ABORTED:
2558 case ELDLM_LOCK_REPLACED:
2561 case ELDLM_NO_LOCK_DATA:
2564 case ELDLM_NAMESPACE_EXISTS:
2567 case ELDLM_BAD_NAMESPACE:
2571 if (((int)error) < 0) /* cast to signed type */
2572 result = error; /* as ldlm_error_t can be unsigned */
2574 CERROR("Invalid DLM result code: %d\n", error);
2580 EXPORT_SYMBOL(ldlm_error2errno);
2583 * Dual to ldlm_error2errno(): maps errno values back to ldlm_error_t.
2585 ldlm_error_t ldlm_errno2error(int err_no)
2594 error = ELDLM_LOCK_CHANGED;
2597 error = ELDLM_LOCK_ABORTED;
2600 error = ELDLM_LOCK_REPLACED;
2603 error = ELDLM_NO_LOCK_DATA;
2606 error = ELDLM_NAMESPACE_EXISTS;
2609 error = ELDLM_BAD_NAMESPACE;
2616 EXPORT_SYMBOL(ldlm_errno2error);
2618 #if LUSTRE_TRACKS_LOCK_EXP_REFS
2619 void ldlm_dump_export_locks(struct obd_export *exp)
2621 spin_lock(&exp->exp_locks_list_guard);
2622 if (!cfs_list_empty(&exp->exp_locks_list)) {
2623 struct ldlm_lock *lock;
2625 CERROR("dumping locks for export %p,"
2626 "ignore if the unmount doesn't hang\n", exp);
2627 cfs_list_for_each_entry(lock, &exp->exp_locks_list,
2629 LDLM_ERROR(lock, "lock:");
2631 spin_unlock(&exp->exp_locks_list_guard);
2635 #ifdef HAVE_SERVER_SUPPORT
2636 static int target_bulk_timeout(void *data)
2639 /* We don't fail the connection here, because having the export
2640 * killed makes the (vital) call to commitrw very sad.
2645 static inline char *bulk2type(struct ptlrpc_bulk_desc *desc)
2647 return desc->bd_type == BULK_GET_SINK ? "GET" : "PUT";
2650 int target_bulk_io(struct obd_export *exp, struct ptlrpc_bulk_desc *desc,
2651 struct l_wait_info *lwi)
2653 struct ptlrpc_request *req = desc->bd_req;
2657 /* If there is eviction in progress, wait for it to finish. */
2658 if (unlikely(cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
2659 *lwi = LWI_INTR(NULL, NULL);
2660 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
2661 !cfs_atomic_read(&exp->exp_obd->
2662 obd_evict_inprogress),
2666 /* Check if client was evicted or tried to reconnect already. */
2667 if (exp->exp_failed || exp->exp_abort_active_req) {
2670 if (desc->bd_type == BULK_PUT_SINK)
2671 rc = sptlrpc_svc_wrap_bulk(req, desc);
2673 rc = ptlrpc_start_bulk_transfer(desc);
2676 if (rc == 0 && OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE)) {
2677 ptlrpc_abort_bulk(desc);
2678 } else if (rc == 0) {
2679 time_t start = cfs_time_current_sec();
2681 long timeoutl = req->rq_deadline - cfs_time_current_sec();
2682 cfs_duration_t timeout = timeoutl <= 0 ?
2683 CFS_TICK : cfs_time_seconds(timeoutl);
2684 *lwi = LWI_TIMEOUT_INTERVAL(timeout,
2685 cfs_time_seconds(1),
2686 target_bulk_timeout,
2688 rc = l_wait_event(desc->bd_waitq,
2689 !ptlrpc_server_bulk_active(desc) ||
2691 exp->exp_abort_active_req,
2693 LASSERT(rc == 0 || rc == -ETIMEDOUT);
2694 /* Wait again if we changed deadline. */
2695 } while ((rc == -ETIMEDOUT) &&
2696 (req->rq_deadline > cfs_time_current_sec()));
2698 if (rc == -ETIMEDOUT) {
2699 DEBUG_REQ(D_ERROR, req,
2700 "timeout on bulk %s after %ld%+lds",
2702 req->rq_deadline - start,
2703 cfs_time_current_sec() -
2705 ptlrpc_abort_bulk(desc);
2706 } else if (exp->exp_failed) {
2707 DEBUG_REQ(D_ERROR, req, "Eviction on bulk %s",
2710 ptlrpc_abort_bulk(desc);
2711 } else if (exp->exp_abort_active_req) {
2712 DEBUG_REQ(D_ERROR, req, "Reconnect on bulk %s",
2714 /* We don't reply anyway. */
2716 ptlrpc_abort_bulk(desc);
2717 } else if (!desc->bd_success ||
2718 desc->bd_nob_transferred != desc->bd_nob) {
2719 DEBUG_REQ(D_ERROR, req, "%s bulk %s %d(%d)",
2721 "truncated" : "network error on",
2723 desc->bd_nob_transferred,
2725 /* XXX Should this be a different errno? */
2727 } else if (desc->bd_type == BULK_GET_SINK) {
2728 rc = sptlrpc_svc_unwrap_bulk(req, desc);
2731 DEBUG_REQ(D_ERROR, req, "bulk %s failed: rc %d",
2732 bulk2type(desc), rc);
2737 EXPORT_SYMBOL(target_bulk_io);
2739 #endif /* HAVE_SERVER_SUPPORT */