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);
364 CFS_INIT_LIST_HEAD(&cli->cl_lru_osc);
365 cfs_atomic_set(&cli->cl_lru_shrinkers, 0);
366 cfs_atomic_set(&cli->cl_lru_busy, 0);
367 cfs_atomic_set(&cli->cl_lru_in_list, 0);
368 CFS_INIT_LIST_HEAD(&cli->cl_lru_list);
369 client_obd_list_lock_init(&cli->cl_lru_list_lock);
371 cfs_waitq_init(&cli->cl_destroy_waitq);
372 cfs_atomic_set(&cli->cl_destroy_in_flight, 0);
373 #ifdef ENABLE_CHECKSUM
374 /* Turn on checksumming by default. */
375 cli->cl_checksum = 1;
377 * The supported checksum types will be worked out at connect time
378 * Set cl_chksum* to CRC32 for now to avoid returning screwed info
381 cli->cl_cksum_type = cli->cl_supp_cksum_types = OBD_CKSUM_CRC32;
383 cfs_atomic_set(&cli->cl_resends, OSC_DEFAULT_RESENDS);
385 /* This value may be changed at connect time in
386 ptlrpc_connect_interpret. */
387 cli->cl_max_pages_per_rpc = min((int)PTLRPC_MAX_BRW_PAGES,
388 (int)(1024 * 1024 >> CFS_PAGE_SHIFT));
390 if (!strcmp(name, LUSTRE_MDC_NAME)) {
391 cli->cl_max_rpcs_in_flight = MDC_MAX_RIF_DEFAULT;
392 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 128 /* MB */) {
393 cli->cl_max_rpcs_in_flight = 2;
394 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 256 /* MB */) {
395 cli->cl_max_rpcs_in_flight = 3;
396 } else if (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT) <= 512 /* MB */) {
397 cli->cl_max_rpcs_in_flight = 4;
399 if (osc_on_mdt(obddev->obd_name))
400 cli->cl_max_rpcs_in_flight = MDS_OSC_MAX_RIF_DEFAULT;
402 cli->cl_max_rpcs_in_flight = OSC_MAX_RIF_DEFAULT;
406 CERROR("ldlm_get_ref failed: %d\n", rc);
410 ptlrpc_init_client(rq_portal, rp_portal, name,
411 &obddev->obd_ldlm_client);
413 imp = class_new_import(obddev);
415 GOTO(err_ldlm, rc = -ENOENT);
416 imp->imp_client = &obddev->obd_ldlm_client;
417 imp->imp_connect_op = connect_op;
418 CFS_INIT_LIST_HEAD(&imp->imp_pinger_chain);
419 memcpy(cli->cl_target_uuid.uuid, lustre_cfg_buf(lcfg, 1),
420 LUSTRE_CFG_BUFLEN(lcfg, 1));
421 class_import_put(imp);
423 rc = client_import_add_conn(imp, &server_uuid, 1);
425 CERROR("can't add initial connection\n");
426 GOTO(err_import, rc);
429 cli->cl_import = imp;
430 /* cli->cl_max_mds_{easize,cookiesize} updated by mdc_init_ea_size() */
431 cli->cl_max_mds_easize = sizeof(struct lov_mds_md_v3);
432 cli->cl_max_mds_cookiesize = sizeof(struct llog_cookie);
434 if (LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
435 if (!strcmp(lustre_cfg_string(lcfg, 3), "inactive")) {
436 CDEBUG(D_HA, "marking %s %s->%s as inactive\n",
437 name, obddev->obd_name,
438 cli->cl_target_uuid.uuid);
439 cfs_spin_lock(&imp->imp_lock);
440 imp->imp_deactive = 1;
441 cfs_spin_unlock(&imp->imp_lock);
445 obddev->obd_namespace = ldlm_namespace_new(obddev, obddev->obd_name,
446 LDLM_NAMESPACE_CLIENT,
447 LDLM_NAMESPACE_GREEDY,
449 if (obddev->obd_namespace == NULL) {
450 CERROR("Unable to create client namespace - %s\n",
452 GOTO(err_import, rc = -ENOMEM);
455 cli->cl_qchk_stat = CL_NOT_QUOTACHECKED;
460 class_destroy_import(imp);
468 int client_obd_cleanup(struct obd_device *obddev)
472 ldlm_namespace_free_post(obddev->obd_namespace);
473 obddev->obd_namespace = NULL;
475 LASSERT(obddev->u.cli.cl_import == NULL);
481 /* ->o_connect() method for client side (OSC and MDC and MGC) */
482 int client_connect_import(const struct lu_env *env,
483 struct obd_export **exp,
484 struct obd_device *obd, struct obd_uuid *cluuid,
485 struct obd_connect_data *data, void *localdata)
487 struct client_obd *cli = &obd->u.cli;
488 struct obd_import *imp = cli->cl_import;
489 struct obd_connect_data *ocd;
490 struct lustre_handle conn = { 0 };
495 cfs_down_write(&cli->cl_sem);
496 if (cli->cl_conn_count > 0 )
497 GOTO(out_sem, rc = -EALREADY);
499 rc = class_connect(&conn, obd, cluuid);
503 cli->cl_conn_count++;
504 *exp = class_conn2export(&conn);
506 LASSERT(obd->obd_namespace);
508 imp->imp_dlm_handle = conn;
509 rc = ptlrpc_init_import(imp);
513 ocd = &imp->imp_connect_data;
516 imp->imp_connect_flags_orig = data->ocd_connect_flags;
519 rc = ptlrpc_connect_import(imp);
521 LASSERT (imp->imp_state == LUSTRE_IMP_DISCON);
524 LASSERT((*exp)->exp_connection);
527 LASSERTF((ocd->ocd_connect_flags & data->ocd_connect_flags) ==
528 ocd->ocd_connect_flags, "old "LPX64", new "LPX64"\n",
529 data->ocd_connect_flags, ocd->ocd_connect_flags);
530 data->ocd_connect_flags = ocd->ocd_connect_flags;
533 ptlrpc_pinger_add_import(imp);
539 cli->cl_conn_count--;
540 class_disconnect(*exp);
544 cfs_up_write(&cli->cl_sem);
549 int client_disconnect_export(struct obd_export *exp)
551 struct obd_device *obd = class_exp2obd(exp);
552 struct client_obd *cli;
553 struct obd_import *imp;
558 CERROR("invalid export for disconnect: exp %p cookie "LPX64"\n",
559 exp, exp ? exp->exp_handle.h_cookie : -1);
564 imp = cli->cl_import;
566 cfs_down_write(&cli->cl_sem);
567 CDEBUG(D_INFO, "disconnect %s - %d\n", obd->obd_name,
570 if (!cli->cl_conn_count) {
571 CERROR("disconnecting disconnected device (%s)\n",
573 GOTO(out_disconnect, rc = -EINVAL);
576 cli->cl_conn_count--;
577 if (cli->cl_conn_count)
578 GOTO(out_disconnect, rc = 0);
580 /* Mark import deactivated now, so we don't try to reconnect if any
581 * of the cleanup RPCs fails (e.g. ldlm cancel, etc). We don't
582 * fully deactivate the import, or that would drop all requests. */
583 cfs_spin_lock(&imp->imp_lock);
584 imp->imp_deactive = 1;
585 cfs_spin_unlock(&imp->imp_lock);
587 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
588 * delete it regardless. (It's safe to delete an import that was
590 (void)ptlrpc_pinger_del_import(imp);
592 if (obd->obd_namespace != NULL) {
593 /* obd_force == local only */
594 ldlm_cli_cancel_unused(obd->obd_namespace, NULL,
595 obd->obd_force ? LCF_LOCAL : 0, NULL);
596 ldlm_namespace_free_prior(obd->obd_namespace, imp, obd->obd_force);
600 * there's no need to hold sem during disconnecting an import,
601 * and actually it may cause deadlock in gss.
603 cfs_up_write(&cli->cl_sem);
604 rc = ptlrpc_disconnect_import(imp, 0);
605 cfs_down_write(&cli->cl_sem);
607 ptlrpc_invalidate_import(imp);
612 /* use server style - class_disconnect should be always called for
614 err = class_disconnect(exp);
618 cfs_up_write(&cli->cl_sem);
623 #ifdef HAVE_SERVER_SUPPORT
624 int server_disconnect_export(struct obd_export *exp)
629 /* Disconnect early so that clients can't keep using export */
630 rc = class_disconnect(exp);
631 /* close import for avoid sending any requests */
632 if (exp->exp_imp_reverse)
633 ptlrpc_cleanup_imp(exp->exp_imp_reverse);
635 if (exp->exp_obd->obd_namespace != NULL)
636 ldlm_cancel_locks_for_export(exp);
638 /* complete all outstanding replies */
639 cfs_spin_lock(&exp->exp_lock);
640 while (!cfs_list_empty(&exp->exp_outstanding_replies)) {
641 struct ptlrpc_reply_state *rs =
642 cfs_list_entry(exp->exp_outstanding_replies.next,
643 struct ptlrpc_reply_state, rs_exp_list);
644 struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
646 cfs_spin_lock(&svcpt->scp_rep_lock);
648 cfs_list_del_init(&rs->rs_exp_list);
649 cfs_spin_lock(&rs->rs_lock);
650 ptlrpc_schedule_difficult_reply(rs);
651 cfs_spin_unlock(&rs->rs_lock);
653 cfs_spin_unlock(&svcpt->scp_rep_lock);
655 cfs_spin_unlock(&exp->exp_lock);
660 /* --------------------------------------------------------------------------
661 * from old lib/target.c
662 * -------------------------------------------------------------------------- */
664 static int target_handle_reconnect(struct lustre_handle *conn,
665 struct obd_export *exp,
666 struct obd_uuid *cluuid)
670 if (exp->exp_connection && exp->exp_imp_reverse) {
671 struct lustre_handle *hdl;
672 struct obd_device *target;
674 hdl = &exp->exp_imp_reverse->imp_remote_handle;
675 target = exp->exp_obd;
677 /* Might be a re-connect after a partition. */
678 if (!memcmp(&conn->cookie, &hdl->cookie, sizeof conn->cookie)) {
679 if (target->obd_recovering) {
680 int timeout = cfs_duration_sec(cfs_time_sub(
682 &target->obd_recovery_timer),
683 cfs_time_current()));
685 LCONSOLE_WARN("%s: Client %s (at %s) reconnect"
686 "ing, waiting for %d clients in recov"
687 "ery for %d:%.02d\n", target->obd_name,
688 obd_uuid2str(&exp->exp_client_uuid),
689 obd_export_nid2str(exp),
690 target->obd_max_recoverable_clients,
691 timeout / 60, timeout % 60);
693 LCONSOLE_WARN("%s: Client %s (at %s) "
694 "reconnecting\n", target->obd_name,
695 obd_uuid2str(&exp->exp_client_uuid),
696 obd_export_nid2str(exp));
699 conn->cookie = exp->exp_handle.h_cookie;
700 /* target_handle_connect() treats EALREADY and
701 * -EALREADY differently. EALREADY means we are
702 * doing a valid reconnect from the same client. */
705 LCONSOLE_WARN("%s: already connected client %s (at %s) "
706 "with handle "LPX64". Rejecting client "
707 "with the same UUID trying to reconnect "
708 "with handle "LPX64"\n", target->obd_name,
709 obd_uuid2str(&exp->exp_client_uuid),
710 obd_export_nid2str(exp),
711 hdl->cookie, conn->cookie);
712 memset(conn, 0, sizeof *conn);
713 /* target_handle_connect() treats EALREADY and
714 * -EALREADY differently. -EALREADY is an error
715 * (same UUID, different handle). */
720 conn->cookie = exp->exp_handle.h_cookie;
721 CDEBUG(D_HA, "connect export for UUID '%s' at %p, cookie "LPX64"\n",
722 cluuid->uuid, exp, conn->cookie);
726 void target_client_add_cb(struct obd_device *obd, __u64 transno, void *cb_data,
729 struct obd_export *exp = cb_data;
731 CDEBUG(D_RPCTRACE, "%s: committing for initial connect of %s\n",
732 obd->obd_name, exp->exp_client_uuid.uuid);
734 cfs_spin_lock(&exp->exp_lock);
735 exp->exp_need_sync = 0;
736 cfs_spin_unlock(&exp->exp_lock);
737 class_export_cb_put(exp);
739 EXPORT_SYMBOL(target_client_add_cb);
743 check_and_start_recovery_timer(struct obd_device *obd,
744 struct ptlrpc_request *req, int new_client);
747 check_and_start_recovery_timer(struct obd_device *obd,
748 struct ptlrpc_request *req, int new_client)
753 int target_handle_connect(struct ptlrpc_request *req)
755 struct obd_device *target = NULL, *targref = NULL;
756 struct obd_export *export = NULL;
757 struct obd_import *revimp;
758 struct obd_import *tmp_imp = NULL;
759 struct lustre_handle conn;
760 struct lustre_handle *tmp;
761 struct obd_uuid tgtuuid;
762 struct obd_uuid cluuid;
763 struct obd_uuid remote_uuid;
768 bool mds_conn = false, lw_client = false;
769 struct obd_connect_data *data, *tmpdata;
771 lnet_nid_t *client_nid = NULL;
774 OBD_RACE(OBD_FAIL_TGT_CONN_RACE);
776 str = req_capsule_client_get(&req->rq_pill, &RMF_TGTUUID);
778 DEBUG_REQ(D_ERROR, req, "bad target UUID for connect");
779 GOTO(out, rc = -EINVAL);
782 obd_str2uuid(&tgtuuid, str);
783 target = class_uuid2obd(&tgtuuid);
785 target = class_name2obd(str);
788 deuuidify(str, NULL, &target_start, &target_len);
789 LCONSOLE_ERROR_MSG(0x137, "UUID '%s' is not available for "
790 "connect (no target)\n", str);
791 GOTO(out, rc = -ENODEV);
794 cfs_spin_lock(&target->obd_dev_lock);
795 if (target->obd_stopping || !target->obd_set_up) {
796 cfs_spin_unlock(&target->obd_dev_lock);
798 deuuidify(str, NULL, &target_start, &target_len);
799 LCONSOLE_ERROR_MSG(0x137, "%.*s: Not available for connect "
800 "from %s (%s)\n", target_len, target_start,
801 libcfs_nid2str(req->rq_peer.nid),
802 (target->obd_stopping ?
803 "stopping" : "not set up"));
804 GOTO(out, rc = -ENODEV);
807 if (target->obd_no_conn) {
808 cfs_spin_unlock(&target->obd_dev_lock);
810 LCONSOLE_WARN("%s: Temporarily refusing client connection "
811 "from %s\n", target->obd_name,
812 libcfs_nid2str(req->rq_peer.nid));
813 GOTO(out, rc = -EAGAIN);
816 /* Make sure the target isn't cleaned up while we're here. Yes,
817 there's still a race between the above check and our incref here.
818 Really, class_uuid2obd should take the ref. */
819 targref = class_incref(target, __FUNCTION__, cfs_current());
821 target->obd_conn_inprogress++;
822 cfs_spin_unlock(&target->obd_dev_lock);
824 str = req_capsule_client_get(&req->rq_pill, &RMF_CLUUID);
826 DEBUG_REQ(D_ERROR, req, "bad client UUID for connect");
827 GOTO(out, rc = -EINVAL);
830 obd_str2uuid(&cluuid, str);
832 /* XXX extract a nettype and format accordingly */
833 switch (sizeof(lnet_nid_t)) {
834 /* NB the casts only avoid compiler warnings */
836 snprintf(remote_uuid.uuid, sizeof remote_uuid,
837 "NET_"LPX64"_UUID", (__u64)req->rq_peer.nid);
840 snprintf(remote_uuid.uuid, sizeof remote_uuid,
841 "NET_%x_UUID", (__u32)req->rq_peer.nid);
847 tmp = req_capsule_client_get(&req->rq_pill, &RMF_CONN);
849 GOTO(out, rc = -EPROTO);
853 size = req_capsule_get_size(&req->rq_pill, &RMF_CONNECT_DATA,
855 data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
857 GOTO(out, rc = -EPROTO);
859 rc = req_capsule_server_pack(&req->rq_pill);
863 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
865 DEBUG_REQ(D_WARNING, req, "Refusing old (unversioned) "
866 "libclient connection attempt");
867 GOTO(out, rc = -EPROTO);
868 } else if (data->ocd_version < LUSTRE_VERSION_CODE -
869 LUSTRE_VERSION_ALLOWED_OFFSET ||
870 data->ocd_version > LUSTRE_VERSION_CODE +
871 LUSTRE_VERSION_ALLOWED_OFFSET) {
872 DEBUG_REQ(D_WARNING, req, "Refusing %s (%d.%d.%d.%d) "
873 "libclient connection attempt",
874 data->ocd_version < LUSTRE_VERSION_CODE ?
876 OBD_OCD_VERSION_MAJOR(data->ocd_version),
877 OBD_OCD_VERSION_MINOR(data->ocd_version),
878 OBD_OCD_VERSION_PATCH(data->ocd_version),
879 OBD_OCD_VERSION_FIX(data->ocd_version));
880 data = req_capsule_server_sized_get(&req->rq_pill,
882 offsetof(typeof(*data), ocd_version) +
883 sizeof(data->ocd_version));
885 data->ocd_connect_flags = OBD_CONNECT_VERSION;
886 data->ocd_version = LUSTRE_VERSION_CODE;
888 GOTO(out, rc = -EPROTO);
892 if ((lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_INITIAL) &&
893 (data->ocd_connect_flags & OBD_CONNECT_MDS))
896 if ((data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) != 0)
899 /* lctl gets a backstage, all-access pass. */
900 if (obd_uuid_equals(&cluuid, &target->obd_uuid))
901 goto dont_check_exports;
903 export = cfs_hash_lookup(target->obd_uuid_hash, &cluuid);
907 /* we've found an export in the hash */
909 cfs_spin_lock(&export->exp_lock);
911 if (export->exp_connecting) { /* bug 9635, et. al. */
912 cfs_spin_unlock(&export->exp_lock);
913 LCONSOLE_WARN("%s: Export %p already connecting from %s\n",
914 export->exp_obd->obd_name, export,
915 libcfs_nid2str(req->rq_peer.nid));
916 class_export_put(export);
919 } else if (mds_conn && export->exp_connection) {
920 cfs_spin_unlock(&export->exp_lock);
921 if (req->rq_peer.nid != export->exp_connection->c_peer.nid)
922 /* mds reconnected after failover */
923 LCONSOLE_WARN("%s: Received MDS connection from "
924 "%s, removing former export from %s\n",
925 target->obd_name, libcfs_nid2str(req->rq_peer.nid),
926 libcfs_nid2str(export->exp_connection->c_peer.nid));
928 /* new mds connection from the same nid */
929 LCONSOLE_WARN("%s: Received new MDS connection from "
930 "%s, removing former export from same NID\n",
931 target->obd_name, libcfs_nid2str(req->rq_peer.nid));
932 class_fail_export(export);
933 class_export_put(export);
936 } else if (export->exp_connection != NULL &&
937 req->rq_peer.nid != export->exp_connection->c_peer.nid &&
938 (lustre_msg_get_op_flags(req->rq_reqmsg) &
939 MSG_CONNECT_INITIAL)) {
940 cfs_spin_unlock(&export->exp_lock);
941 /* in mds failover we have static uuid but nid can be
943 LCONSOLE_WARN("%s: Client %s seen on new nid %s when "
944 "existing nid %s is already connected\n",
945 target->obd_name, cluuid.uuid,
946 libcfs_nid2str(req->rq_peer.nid),
948 export->exp_connection->c_peer.nid));
950 class_export_put(export);
953 export->exp_connecting = 1;
954 cfs_spin_unlock(&export->exp_lock);
955 LASSERT(export->exp_obd == target);
957 rc = target_handle_reconnect(&conn, export, &cluuid);
960 /* If we found an export, we already unlocked. */
963 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_CONNECT, 2 * obd_timeout);
964 } else if (req->rq_export == NULL &&
965 cfs_atomic_read(&export->exp_rpc_count) > 0) {
966 LCONSOLE_WARN("%s: Client %s (at %s) refused connection, "
967 "still busy with %d references\n",
968 target->obd_name, cluuid.uuid,
969 libcfs_nid2str(req->rq_peer.nid),
970 cfs_atomic_read(&export->exp_refcount));
971 GOTO(out, rc = -EBUSY);
972 } else if (req->rq_export != NULL &&
973 (cfs_atomic_read(&export->exp_rpc_count) > 1)) {
974 /* the current connect rpc has increased exp_rpc_count */
975 LCONSOLE_WARN("%s: Client %s (at %s) refused reconnection, "
976 "still busy with %d active RPCs\n",
977 target->obd_name, cluuid.uuid,
978 libcfs_nid2str(req->rq_peer.nid),
979 cfs_atomic_read(&export->exp_rpc_count) - 1);
980 cfs_spin_lock(&export->exp_lock);
981 if (req->rq_export->exp_conn_cnt <
982 lustre_msg_get_conn_cnt(req->rq_reqmsg))
983 /* try to abort active requests */
984 req->rq_export->exp_abort_active_req = 1;
985 cfs_spin_unlock(&export->exp_lock);
986 GOTO(out, rc = -EBUSY);
987 } else if (lustre_msg_get_conn_cnt(req->rq_reqmsg) == 1) {
988 if (!strstr(cluuid.uuid, "mdt"))
989 LCONSOLE_WARN("%s: Rejecting reconnect from the "
990 "known client %s (at %s) because it "
991 "is indicating it is a new client",
992 target->obd_name, cluuid.uuid,
993 libcfs_nid2str(req->rq_peer.nid));
994 GOTO(out, rc = -EALREADY);
996 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_RECONNECT, 2 * obd_timeout);
1003 CDEBUG(D_HA, "%s: connection from %s@%s %st"LPU64" exp %p cur %ld last %ld\n",
1004 target->obd_name, cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
1005 target->obd_recovering ? "recovering/" : "", data->ocd_transno,
1006 export, (long)cfs_time_current_sec(),
1007 export ? (long)export->exp_last_request_time : 0);
1009 /* If this is the first time a client connects, reset the recovery
1010 * timer. Discard lightweight connections which might be local */
1011 if (!lw_client && rc == 0 && target->obd_recovering)
1012 check_and_start_recovery_timer(target, req, export == NULL);
1014 /* We want to handle EALREADY but *not* -EALREADY from
1015 * target_handle_reconnect(), return reconnection state in a flag */
1016 if (rc == EALREADY) {
1017 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
1023 /* Tell the client if we support replayable requests */
1024 if (target->obd_replayable)
1025 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
1026 client_nid = &req->rq_peer.nid;
1028 if (export == NULL) {
1029 /* allow lightweight connections during recovery */
1030 if (target->obd_recovering && !lw_client) {
1032 int c; /* connected */
1033 int i; /* in progress */
1036 c = cfs_atomic_read(&target->obd_connected_clients);
1037 i = cfs_atomic_read(&target->obd_lock_replay_clients);
1038 k = target->obd_max_recoverable_clients;
1039 t = cfs_timer_deadline(&target->obd_recovery_timer);
1040 t = cfs_time_sub(t, cfs_time_current());
1041 t = cfs_duration_sec(t);
1042 LCONSOLE_WARN("%s: Denying connection for new client "
1043 "%s (at %s), waiting for all %d known "
1044 "clients (%d recovered, %d in progress, "
1045 "and %d unseen) to recover in %d:%.02d\n",
1046 target->obd_name, cluuid.uuid,
1047 libcfs_nid2str(req->rq_peer.nid), k,
1048 c - i, i, k - c, (int)t / 60,
1053 rc = obd_connect(req->rq_svc_thread->t_env,
1054 &export, target, &cluuid, data,
1057 conn.cookie = export->exp_handle.h_cookie;
1060 rc = obd_reconnect(req->rq_svc_thread->t_env,
1061 export, target, &cluuid, data, client_nid);
1066 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 6, 50, 0)
1067 /* 2.2.0 clients always swab nidtbl entries due to a bug, so server
1068 * will do the swabbing for if the client is using the same endianness.
1070 * This fixup is version-limited, because we don't want to carry the
1071 * OBD_CONNECT_MNE_SWAB flag around forever, just so long as we need
1072 * interop with unpatched 2.2 clients. For newer clients, servers
1073 * will never do MNE swabbing, let the client handle that. LU-1644 */
1074 export->exp_need_mne_swab = !ptlrpc_req_need_swab(req) &&
1075 !(data->ocd_connect_flags & OBD_CONNECT_MNE_SWAB);
1077 #warning "LU-1644: Remove old OBD_CONNECT_MNE_SWAB fixup and exp_need_mne_swab"
1080 LASSERT(target->u.obt.obt_magic == OBT_MAGIC);
1081 data->ocd_instance = target->u.obt.obt_instance;
1083 /* Return only the parts of obd_connect_data that we understand, so the
1084 * client knows that we don't understand the rest. */
1086 tmpsize = req_capsule_get_size(&req->rq_pill, &RMF_CONNECT_DATA,
1088 tmpdata = req_capsule_server_get(&req->rq_pill,
1090 /* Don't use struct assignment here, because the client reply
1091 * buffer may be smaller/larger than the local struct
1092 * obd_connect_data. */
1093 memcpy(tmpdata, data, min(tmpsize, size));
1096 /* If all else goes well, this is our RPC return code. */
1099 lustre_msg_set_handle(req->rq_repmsg, &conn);
1101 /* If the client and the server are the same node, we will already
1102 * have an export that really points to the client's DLM export,
1103 * because we have a shared handles table.
1105 * XXX this will go away when shaver stops sending the "connect" handle
1106 * in the real "remote handle" field of the request --phik 24 Apr 2003
1108 if (req->rq_export != NULL)
1109 class_export_put(req->rq_export);
1111 /* request takes one export refcount */
1112 req->rq_export = class_export_get(export);
1114 cfs_spin_lock(&export->exp_lock);
1115 if (export->exp_conn_cnt >= lustre_msg_get_conn_cnt(req->rq_reqmsg)) {
1116 cfs_spin_unlock(&export->exp_lock);
1117 CDEBUG(D_RPCTRACE, "%s: %s already connected at higher "
1118 "conn_cnt: %d > %d\n",
1119 cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
1120 export->exp_conn_cnt,
1121 lustre_msg_get_conn_cnt(req->rq_reqmsg));
1123 GOTO(out, rc = -EALREADY);
1125 LASSERT(lustre_msg_get_conn_cnt(req->rq_reqmsg) > 0);
1126 export->exp_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
1127 export->exp_abort_active_req = 0;
1129 /* request from liblustre? Don't evict it for not pinging. */
1130 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
1131 export->exp_libclient = 1;
1132 cfs_spin_unlock(&export->exp_lock);
1134 cfs_spin_lock(&target->obd_dev_lock);
1135 cfs_list_del_init(&export->exp_obd_chain_timed);
1136 cfs_spin_unlock(&target->obd_dev_lock);
1138 cfs_spin_unlock(&export->exp_lock);
1141 if (export->exp_connection != NULL) {
1142 /* Check to see if connection came from another NID */
1143 if ((export->exp_connection->c_peer.nid != req->rq_peer.nid) &&
1144 !cfs_hlist_unhashed(&export->exp_nid_hash))
1145 cfs_hash_del(export->exp_obd->obd_nid_hash,
1146 &export->exp_connection->c_peer.nid,
1147 &export->exp_nid_hash);
1149 ptlrpc_connection_put(export->exp_connection);
1152 export->exp_connection = ptlrpc_connection_get(req->rq_peer,
1155 if (cfs_hlist_unhashed(&export->exp_nid_hash)) {
1156 cfs_hash_add(export->exp_obd->obd_nid_hash,
1157 &export->exp_connection->c_peer.nid,
1158 &export->exp_nid_hash);
1161 if (target->obd_recovering && !export->exp_in_recovery && !lw_client) {
1163 __u64 transno = data->ocd_transno;
1165 cfs_spin_lock(&export->exp_lock);
1166 /* possible race with class_disconnect_stale_exports,
1167 * export may be already in the eviction process */
1168 if (export->exp_failed) {
1169 cfs_spin_unlock(&export->exp_lock);
1170 GOTO(out, rc = -ENODEV);
1172 export->exp_in_recovery = 1;
1173 export->exp_req_replay_needed = 1;
1174 export->exp_lock_replay_needed = 1;
1175 cfs_spin_unlock(&export->exp_lock);
1177 has_transno = !!(lustre_msg_get_op_flags(req->rq_reqmsg) &
1178 MSG_CONNECT_TRANSNO);
1179 if (has_transno && transno == 0)
1180 CWARN("Connect with zero transno!\n");
1182 if (has_transno && transno > 0 &&
1183 transno < target->obd_next_recovery_transno &&
1184 transno > target->obd_last_committed) {
1185 /* another way is to use cmpxchg() so it will be
1187 cfs_spin_lock(&target->obd_recovery_task_lock);
1188 if (transno < target->obd_next_recovery_transno)
1189 target->obd_next_recovery_transno = transno;
1190 cfs_spin_unlock(&target->obd_recovery_task_lock);
1193 cfs_atomic_inc(&target->obd_req_replay_clients);
1194 cfs_atomic_inc(&target->obd_lock_replay_clients);
1195 if (cfs_atomic_inc_return(&target->obd_connected_clients) ==
1196 target->obd_max_recoverable_clients)
1197 cfs_waitq_signal(&target->obd_next_transno_waitq);
1200 /* Tell the client we're in recovery, when client is involved in it. */
1201 if (target->obd_recovering && !lw_client)
1202 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
1204 tmp = req_capsule_client_get(&req->rq_pill, &RMF_CONN);
1207 /* for the rest part, we return -ENOTCONN in case of errors
1208 * in order to let client initialize connection again.
1210 revimp = class_new_import(target);
1211 if (revimp == NULL) {
1212 CERROR("fail to alloc new reverse import.\n");
1213 GOTO(out, rc = -ENOTCONN);
1216 cfs_spin_lock(&export->exp_lock);
1217 if (export->exp_imp_reverse != NULL) {
1218 /* destroyed import can be still referenced in ctxt */
1219 obd_set_info_async(req->rq_svc_thread->t_env, export,
1220 sizeof(KEY_REVIMP_UPD), KEY_REVIMP_UPD,
1222 tmp_imp = export->exp_imp_reverse;
1224 export->exp_imp_reverse = revimp;
1225 cfs_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 ((export->exp_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 ((export->exp_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 cfs_spin_lock(&export->exp_lock);
1253 export->exp_imp_reverse = NULL;
1254 cfs_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 cfs_spin_lock(&export->exp_lock);
1265 export->exp_connecting = 0;
1266 cfs_spin_unlock(&export->exp_lock);
1268 class_export_put(export);
1271 cfs_spin_lock(&target->obd_dev_lock);
1272 target->obd_conn_inprogress--;
1273 cfs_spin_unlock(&target->obd_dev_lock);
1275 class_decref(targref, __FUNCTION__, cfs_current());
1278 req->rq_status = rc;
1282 int target_handle_disconnect(struct ptlrpc_request *req)
1287 rc = req_capsule_server_pack(&req->rq_pill);
1291 /* keep the rq_export around so we can send the reply */
1292 req->rq_status = obd_disconnect(class_export_get(req->rq_export));
1297 void target_destroy_export(struct obd_export *exp)
1299 struct obd_import *imp = NULL;
1300 /* exports created from last_rcvd data, and "fake"
1301 exports created by lctl don't have an import */
1302 cfs_spin_lock(&exp->exp_lock);
1303 if (exp->exp_imp_reverse != NULL) {
1304 imp = exp->exp_imp_reverse;
1305 exp->exp_imp_reverse = NULL;
1307 cfs_spin_unlock(&exp->exp_lock);
1309 client_destroy_import(imp);
1311 LASSERT_ATOMIC_ZERO(&exp->exp_locks_count);
1312 LASSERT_ATOMIC_ZERO(&exp->exp_rpc_count);
1313 LASSERT_ATOMIC_ZERO(&exp->exp_cb_count);
1314 LASSERT_ATOMIC_ZERO(&exp->exp_replay_count);
1318 * Recovery functions
1320 static void target_request_copy_get(struct ptlrpc_request *req)
1322 class_export_rpc_get(req->rq_export);
1323 LASSERT(cfs_list_empty(&req->rq_list));
1324 CFS_INIT_LIST_HEAD(&req->rq_replay_list);
1326 /* increase refcount to keep request in queue */
1327 cfs_atomic_inc(&req->rq_refcount);
1328 /** let export know it has replays to be handled */
1329 cfs_atomic_inc(&req->rq_export->exp_replay_count);
1332 static void target_request_copy_put(struct ptlrpc_request *req)
1334 LASSERT(cfs_list_empty(&req->rq_replay_list));
1335 LASSERT_ATOMIC_POS(&req->rq_export->exp_replay_count);
1337 cfs_atomic_dec(&req->rq_export->exp_replay_count);
1338 class_export_rpc_put(req->rq_export);
1339 ptlrpc_server_drop_request(req);
1342 static int target_exp_enqueue_req_replay(struct ptlrpc_request *req)
1344 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
1345 struct obd_export *exp = req->rq_export;
1346 struct ptlrpc_request *reqiter;
1351 cfs_spin_lock(&exp->exp_lock);
1352 cfs_list_for_each_entry(reqiter, &exp->exp_req_replay_queue,
1354 if (lustre_msg_get_transno(reqiter->rq_reqmsg) == transno) {
1361 /* we expect it with RESENT and REPLAY flags */
1362 if ((lustre_msg_get_flags(req->rq_reqmsg) &
1363 (MSG_RESENT | MSG_REPLAY)) != (MSG_RESENT | MSG_REPLAY))
1364 CERROR("invalid flags %x of resent replay\n",
1365 lustre_msg_get_flags(req->rq_reqmsg));
1367 cfs_list_add_tail(&req->rq_replay_list,
1368 &exp->exp_req_replay_queue);
1371 cfs_spin_unlock(&exp->exp_lock);
1375 static void target_exp_dequeue_req_replay(struct ptlrpc_request *req)
1377 LASSERT(!cfs_list_empty(&req->rq_replay_list));
1378 LASSERT(req->rq_export);
1380 cfs_spin_lock(&req->rq_export->exp_lock);
1381 cfs_list_del_init(&req->rq_replay_list);
1382 cfs_spin_unlock(&req->rq_export->exp_lock);
1386 static void target_finish_recovery(struct obd_device *obd)
1390 /* only log a recovery message when recovery has occurred */
1391 if (obd->obd_recovery_start) {
1392 time_t elapsed_time = max_t(time_t, 1, cfs_time_current_sec() -
1393 obd->obd_recovery_start);
1394 LCONSOLE_INFO("%s: Recovery over after %d:%.02d, of %d clients "
1395 "%d recovered and %d %s evicted.\n", obd->obd_name,
1396 (int)elapsed_time / 60, (int)elapsed_time % 60,
1397 obd->obd_max_recoverable_clients,
1398 cfs_atomic_read(&obd->obd_connected_clients),
1399 obd->obd_stale_clients,
1400 obd->obd_stale_clients == 1 ? "was" : "were");
1403 ldlm_reprocess_all_ns(obd->obd_namespace);
1404 cfs_spin_lock(&obd->obd_recovery_task_lock);
1405 if (!cfs_list_empty(&obd->obd_req_replay_queue) ||
1406 !cfs_list_empty(&obd->obd_lock_replay_queue) ||
1407 !cfs_list_empty(&obd->obd_final_req_queue)) {
1408 CERROR("%s: Recovery queues ( %s%s%s) are not empty\n",
1410 cfs_list_empty(&obd->obd_req_replay_queue) ? "" : "req ",
1411 cfs_list_empty(&obd->obd_lock_replay_queue) ? \
1413 cfs_list_empty(&obd->obd_final_req_queue) ? \
1415 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1418 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1420 obd->obd_recovery_end = cfs_time_current_sec();
1422 /* when recovery finished, cleanup orphans on mds and ost */
1423 if (OBT(obd) && OBP(obd, postrecov)) {
1424 int rc = OBP(obd, postrecov)(obd);
1426 LCONSOLE_WARN("%s: Post recovery failed, rc %d\n",
1432 static void abort_req_replay_queue(struct obd_device *obd)
1434 struct ptlrpc_request *req, *n;
1435 cfs_list_t abort_list;
1437 CFS_INIT_LIST_HEAD(&abort_list);
1438 cfs_spin_lock(&obd->obd_recovery_task_lock);
1439 cfs_list_splice_init(&obd->obd_req_replay_queue, &abort_list);
1440 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1441 cfs_list_for_each_entry_safe(req, n, &abort_list, rq_list) {
1442 DEBUG_REQ(D_WARNING, req, "aborted:");
1443 req->rq_status = -ENOTCONN;
1444 if (ptlrpc_error(req)) {
1445 DEBUG_REQ(D_ERROR, req,
1446 "failed abort_req_reply; skipping");
1448 target_exp_dequeue_req_replay(req);
1449 target_request_copy_put(req);
1453 static void abort_lock_replay_queue(struct obd_device *obd)
1455 struct ptlrpc_request *req, *n;
1456 cfs_list_t abort_list;
1458 CFS_INIT_LIST_HEAD(&abort_list);
1459 cfs_spin_lock(&obd->obd_recovery_task_lock);
1460 cfs_list_splice_init(&obd->obd_lock_replay_queue, &abort_list);
1461 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1462 cfs_list_for_each_entry_safe(req, n, &abort_list, rq_list){
1463 DEBUG_REQ(D_ERROR, req, "aborted:");
1464 req->rq_status = -ENOTCONN;
1465 if (ptlrpc_error(req)) {
1466 DEBUG_REQ(D_ERROR, req,
1467 "failed abort_lock_reply; skipping");
1469 target_request_copy_put(req);
1473 /* Called from a cleanup function if the device is being cleaned up
1474 forcefully. The exports should all have been disconnected already,
1475 the only thing left to do is
1476 - clear the recovery flags
1478 - free queued requests and replies, but don't send replies
1479 Because the obd_stopping flag is set, no new requests should be received.
1482 void target_cleanup_recovery(struct obd_device *obd)
1484 struct ptlrpc_request *req, *n;
1485 cfs_list_t clean_list;
1488 CFS_INIT_LIST_HEAD(&clean_list);
1489 cfs_spin_lock(&obd->obd_dev_lock);
1490 if (!obd->obd_recovering) {
1491 cfs_spin_unlock(&obd->obd_dev_lock);
1495 obd->obd_recovering = obd->obd_abort_recovery = 0;
1496 cfs_spin_unlock(&obd->obd_dev_lock);
1498 cfs_spin_lock(&obd->obd_recovery_task_lock);
1499 target_cancel_recovery_timer(obd);
1500 cfs_list_splice_init(&obd->obd_req_replay_queue, &clean_list);
1501 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1503 cfs_list_for_each_entry_safe(req, n, &clean_list, rq_list) {
1504 LASSERT(req->rq_reply_state == 0);
1505 target_exp_dequeue_req_replay(req);
1506 target_request_copy_put(req);
1509 cfs_spin_lock(&obd->obd_recovery_task_lock);
1510 cfs_list_splice_init(&obd->obd_lock_replay_queue, &clean_list);
1511 cfs_list_splice_init(&obd->obd_final_req_queue, &clean_list);
1512 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1514 cfs_list_for_each_entry_safe(req, n, &clean_list, rq_list){
1515 LASSERT(req->rq_reply_state == 0);
1516 target_request_copy_put(req);
1522 /* obd_recovery_task_lock should be held */
1523 void target_cancel_recovery_timer(struct obd_device *obd)
1525 CDEBUG(D_HA, "%s: cancel recovery timer\n", obd->obd_name);
1526 cfs_timer_disarm(&obd->obd_recovery_timer);
1529 static void target_start_recovery_timer(struct obd_device *obd)
1531 if (obd->obd_recovery_start != 0)
1534 cfs_spin_lock(&obd->obd_dev_lock);
1535 if (!obd->obd_recovering || obd->obd_abort_recovery) {
1536 cfs_spin_unlock(&obd->obd_dev_lock);
1540 LASSERT(obd->obd_recovery_timeout != 0);
1542 if (obd->obd_recovery_start != 0) {
1543 cfs_spin_unlock(&obd->obd_dev_lock);
1547 cfs_timer_arm(&obd->obd_recovery_timer,
1548 cfs_time_shift(obd->obd_recovery_timeout));
1549 obd->obd_recovery_start = cfs_time_current_sec();
1550 cfs_spin_unlock(&obd->obd_dev_lock);
1552 LCONSOLE_WARN("%s: Will be in recovery for at least %d:%.02d, "
1553 "or until %d client%s reconnect%s\n",
1555 obd->obd_recovery_timeout / 60,
1556 obd->obd_recovery_timeout % 60,
1557 obd->obd_max_recoverable_clients,
1558 (obd->obd_max_recoverable_clients == 1) ? "" : "s",
1559 (obd->obd_max_recoverable_clients == 1) ? "s": "");
1563 * extend recovery window.
1565 * if @extend is true, extend recovery window to have @drt remaining at least;
1566 * otherwise, make sure the recovery timeout value is not less than @drt.
1568 static void extend_recovery_timer(struct obd_device *obd, int drt, bool extend)
1572 cfs_duration_t left;
1575 cfs_spin_lock(&obd->obd_dev_lock);
1576 if (!obd->obd_recovering || obd->obd_abort_recovery) {
1577 cfs_spin_unlock(&obd->obd_dev_lock);
1580 LASSERT(obd->obd_recovery_start != 0);
1582 now = cfs_time_current_sec();
1583 to = obd->obd_recovery_timeout;
1584 end = obd->obd_recovery_start + to;
1585 left = cfs_time_sub(end, now);
1587 if (extend && (drt > left)) {
1589 } else if (!extend && (drt > to)) {
1591 /* reduce drt by already passed time */
1592 drt -= obd->obd_recovery_timeout - left;
1595 if (to > obd->obd_recovery_time_hard)
1596 to = obd->obd_recovery_time_hard;
1597 if (obd->obd_recovery_timeout < to) {
1598 obd->obd_recovery_timeout = to;
1599 cfs_timer_arm(&obd->obd_recovery_timer,
1600 cfs_time_shift(drt));
1602 cfs_spin_unlock(&obd->obd_dev_lock);
1604 CDEBUG(D_HA, "%s: recovery timer will expire in %u seconds\n",
1605 obd->obd_name, (unsigned)drt);
1608 /* Reset the timer with each new client connection */
1610 * This timer is actually reconnect_timer, which is for making sure
1611 * the total recovery window is at least as big as my reconnect
1612 * attempt timing. So the initial recovery time_out will be set to
1613 * OBD_RECOVERY_FACTOR * obd_timeout. If the timeout coming
1614 * from client is bigger than this, then the recovery time_out will
1615 * be extended to make sure the client could be reconnected, in the
1616 * process, the timeout from the new client should be ignored.
1620 check_and_start_recovery_timer(struct obd_device *obd,
1621 struct ptlrpc_request *req,
1624 int service_time = lustre_msg_get_service_time(req->rq_reqmsg);
1625 struct obd_device_target *obt = &obd->u.obt;
1626 struct lustre_sb_info *lsi;
1628 if (!new_client && service_time)
1629 /* Teach server about old server's estimates, as first guess
1630 * at how long new requests will take. */
1631 at_measured(&req->rq_rqbd->rqbd_svcpt->scp_at_estimate,
1634 target_start_recovery_timer(obd);
1636 /* convert the service time to rpc timeout,
1637 * reuse service_time to limit stack usage */
1638 service_time = at_est2timeout(service_time);
1640 /* We expect other clients to timeout within service_time, then try
1641 * to reconnect, then try the failover server. The max delay between
1642 * connect attempts is SWITCH_MAX + SWITCH_INC + INITIAL */
1643 service_time += 2 * INITIAL_CONNECT_TIMEOUT;
1645 LASSERT(obt->obt_magic == OBT_MAGIC);
1646 lsi = s2lsi(obt->obt_sb);
1647 if (!(lsi->lsi_flags | LDD_F_IR_CAPABLE))
1648 service_time += 2 * (CONNECTION_SWITCH_MAX +
1649 CONNECTION_SWITCH_INC);
1650 if (service_time > obd->obd_recovery_timeout && !new_client)
1651 extend_recovery_timer(obd, service_time, false);
1654 /** Health checking routines */
1655 static inline int exp_connect_healthy(struct obd_export *exp)
1657 return (exp->exp_in_recovery);
1660 /** if export done req_replay or has replay in queue */
1661 static inline int exp_req_replay_healthy(struct obd_export *exp)
1663 return (!exp->exp_req_replay_needed ||
1664 cfs_atomic_read(&exp->exp_replay_count) > 0);
1666 /** if export done lock_replay or has replay in queue */
1667 static inline int exp_lock_replay_healthy(struct obd_export *exp)
1669 return (!exp->exp_lock_replay_needed ||
1670 cfs_atomic_read(&exp->exp_replay_count) > 0);
1673 static inline int exp_vbr_healthy(struct obd_export *exp)
1675 return (!exp->exp_vbr_failed);
1678 static inline int exp_finished(struct obd_export *exp)
1680 return (exp->exp_in_recovery && !exp->exp_lock_replay_needed);
1683 /** Checking routines for recovery */
1684 static int check_for_clients(struct obd_device *obd)
1686 unsigned int clnts = cfs_atomic_read(&obd->obd_connected_clients);
1688 if (obd->obd_abort_recovery || obd->obd_recovery_expired)
1690 LASSERT(clnts <= obd->obd_max_recoverable_clients);
1691 if (obd->obd_no_conn == 0 &&
1692 clnts + obd->obd_stale_clients == obd->obd_max_recoverable_clients)
1697 static int check_for_next_transno(struct obd_device *obd)
1699 struct ptlrpc_request *req = NULL;
1700 int wake_up = 0, connected, completed, queue_len;
1701 __u64 next_transno, req_transno;
1704 cfs_spin_lock(&obd->obd_recovery_task_lock);
1705 if (!cfs_list_empty(&obd->obd_req_replay_queue)) {
1706 req = cfs_list_entry(obd->obd_req_replay_queue.next,
1707 struct ptlrpc_request, rq_list);
1708 req_transno = lustre_msg_get_transno(req->rq_reqmsg);
1713 connected = cfs_atomic_read(&obd->obd_connected_clients);
1714 completed = connected - cfs_atomic_read(&obd->obd_req_replay_clients);
1715 queue_len = obd->obd_requests_queued_for_recovery;
1716 next_transno = obd->obd_next_recovery_transno;
1718 CDEBUG(D_HA, "max: %d, connected: %d, completed: %d, queue_len: %d, "
1719 "req_transno: "LPU64", next_transno: "LPU64"\n",
1720 obd->obd_max_recoverable_clients, connected, completed,
1721 queue_len, req_transno, next_transno);
1723 if (obd->obd_abort_recovery) {
1724 CDEBUG(D_HA, "waking for aborted recovery\n");
1726 } else if (obd->obd_recovery_expired) {
1727 CDEBUG(D_HA, "waking for expired recovery\n");
1729 } else if (cfs_atomic_read(&obd->obd_req_replay_clients) == 0) {
1730 CDEBUG(D_HA, "waking for completed recovery\n");
1732 } else if (req_transno == next_transno) {
1733 CDEBUG(D_HA, "waking for next ("LPD64")\n", next_transno);
1735 } else if (queue_len == cfs_atomic_read(&obd->obd_req_replay_clients)) {
1737 /** handle gaps occured due to lost reply or VBR */
1738 LASSERTF(req_transno >= next_transno,
1739 "req_transno: "LPU64", next_transno: "LPU64"\n",
1740 req_transno, next_transno);
1741 if (req_transno > obd->obd_last_committed &&
1742 !obd->obd_version_recov)
1745 "%s: waking for gap in transno, VBR is %s (skip: "
1746 LPD64", ql: %d, comp: %d, conn: %d, next: "LPD64
1747 ", last_committed: "LPD64")\n",
1748 obd->obd_name, obd->obd_version_recov ? "ON" : "OFF",
1749 next_transno, queue_len, completed, connected,
1750 req_transno, obd->obd_last_committed);
1751 obd->obd_next_recovery_transno = req_transno;
1753 } else if (OBD_FAIL_CHECK(OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS)) {
1754 CDEBUG(D_HA, "accepting transno gaps is explicitly allowed"
1755 " by fail_lock, waking up ("LPD64")\n", next_transno);
1756 obd->obd_next_recovery_transno = req_transno;
1759 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1763 static int check_for_next_lock(struct obd_device *obd)
1767 cfs_spin_lock(&obd->obd_recovery_task_lock);
1768 if (!cfs_list_empty(&obd->obd_lock_replay_queue)) {
1769 CDEBUG(D_HA, "waking for next lock\n");
1771 } else if (cfs_atomic_read(&obd->obd_lock_replay_clients) == 0) {
1772 CDEBUG(D_HA, "waking for completed lock replay\n");
1774 } else if (obd->obd_abort_recovery) {
1775 CDEBUG(D_HA, "waking for aborted recovery\n");
1777 } else if (obd->obd_recovery_expired) {
1778 CDEBUG(D_HA, "waking for expired recovery\n");
1781 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1787 * wait for recovery events,
1788 * check its status with help of check_routine
1789 * evict dead clients via health_check
1791 static int target_recovery_overseer(struct obd_device *obd,
1792 int (*check_routine)(struct obd_device *),
1793 int (*health_check)(struct obd_export *))
1796 cfs_wait_event(obd->obd_next_transno_waitq, check_routine(obd));
1797 if (obd->obd_abort_recovery) {
1798 CWARN("recovery is aborted, evict exports in recovery\n");
1799 /** evict exports which didn't finish recovery yet */
1800 class_disconnect_stale_exports(obd, exp_finished);
1802 } else if (obd->obd_recovery_expired) {
1803 obd->obd_recovery_expired = 0;
1804 /** If some clients died being recovered, evict them */
1805 LCONSOLE_WARN("%s: recovery is timed out, "
1806 "evict stale exports\n", obd->obd_name);
1807 /** evict cexports with no replay in queue, they are stalled */
1808 class_disconnect_stale_exports(obd, health_check);
1809 /** continue with VBR */
1810 cfs_spin_lock(&obd->obd_dev_lock);
1811 obd->obd_version_recov = 1;
1812 cfs_spin_unlock(&obd->obd_dev_lock);
1814 * reset timer, recovery will proceed with versions now,
1815 * timeout is set just to handle reconnection delays
1817 extend_recovery_timer(obd, RECONNECT_DELAY_MAX, true);
1818 /** Wait for recovery events again, after evicting bad clients */
1824 static struct ptlrpc_request *target_next_replay_req(struct obd_device *obd)
1826 struct ptlrpc_request *req = NULL;
1829 CDEBUG(D_HA, "Waiting for transno "LPD64"\n",
1830 obd->obd_next_recovery_transno);
1832 if (target_recovery_overseer(obd, check_for_next_transno,
1833 exp_req_replay_healthy)) {
1834 abort_req_replay_queue(obd);
1835 abort_lock_replay_queue(obd);
1838 cfs_spin_lock(&obd->obd_recovery_task_lock);
1839 if (!cfs_list_empty(&obd->obd_req_replay_queue)) {
1840 req = cfs_list_entry(obd->obd_req_replay_queue.next,
1841 struct ptlrpc_request, rq_list);
1842 cfs_list_del_init(&req->rq_list);
1843 obd->obd_requests_queued_for_recovery--;
1844 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1846 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1847 LASSERT(cfs_list_empty(&obd->obd_req_replay_queue));
1848 LASSERT(cfs_atomic_read(&obd->obd_req_replay_clients) == 0);
1849 /** evict exports failed VBR */
1850 class_disconnect_stale_exports(obd, exp_vbr_healthy);
1855 static struct ptlrpc_request *target_next_replay_lock(struct obd_device *obd)
1857 struct ptlrpc_request *req = NULL;
1859 CDEBUG(D_HA, "Waiting for lock\n");
1860 if (target_recovery_overseer(obd, check_for_next_lock,
1861 exp_lock_replay_healthy))
1862 abort_lock_replay_queue(obd);
1864 cfs_spin_lock(&obd->obd_recovery_task_lock);
1865 if (!cfs_list_empty(&obd->obd_lock_replay_queue)) {
1866 req = cfs_list_entry(obd->obd_lock_replay_queue.next,
1867 struct ptlrpc_request, rq_list);
1868 cfs_list_del_init(&req->rq_list);
1869 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1871 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1872 LASSERT(cfs_list_empty(&obd->obd_lock_replay_queue));
1873 LASSERT(cfs_atomic_read(&obd->obd_lock_replay_clients) == 0);
1874 /** evict exports failed VBR */
1875 class_disconnect_stale_exports(obd, exp_vbr_healthy);
1880 static struct ptlrpc_request *target_next_final_ping(struct obd_device *obd)
1882 struct ptlrpc_request *req = NULL;
1884 cfs_spin_lock(&obd->obd_recovery_task_lock);
1885 if (!cfs_list_empty(&obd->obd_final_req_queue)) {
1886 req = cfs_list_entry(obd->obd_final_req_queue.next,
1887 struct ptlrpc_request, rq_list);
1888 cfs_list_del_init(&req->rq_list);
1889 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1890 if (req->rq_export->exp_in_recovery) {
1891 cfs_spin_lock(&req->rq_export->exp_lock);
1892 req->rq_export->exp_in_recovery = 0;
1893 cfs_spin_unlock(&req->rq_export->exp_lock);
1896 cfs_spin_unlock(&obd->obd_recovery_task_lock);
1901 static int handle_recovery_req(struct ptlrpc_thread *thread,
1902 struct ptlrpc_request *req,
1903 svc_handler_t handler)
1909 * export can be evicted during recovery, no need to handle replays for
1910 * it after that, discard such request silently
1912 if (req->rq_export->exp_disconnected)
1913 GOTO(reqcopy_put, rc = 0);
1915 rc = lu_context_init(&req->rq_recov_session, LCT_SESSION);
1917 CERROR("Failure to initialize session: %d\n", rc);
1918 GOTO(reqcopy_put, rc);
1921 req->rq_recov_session.lc_thread = thread;
1922 lu_context_enter(&req->rq_recov_session);
1923 req->rq_svc_thread = thread;
1924 req->rq_svc_thread->t_env->le_ses = &req->rq_recov_session;
1926 /* thread context */
1927 lu_context_enter(&thread->t_env->le_ctx);
1929 lu_context_exit(&thread->t_env->le_ctx);
1931 lu_context_exit(&req->rq_recov_session);
1932 lu_context_fini(&req->rq_recov_session);
1933 /* don't reset timer for final stage */
1934 if (!exp_finished(req->rq_export)) {
1935 int to = obd_timeout;
1938 * Add request timeout to the recovery time so next request from
1939 * this client may come in recovery time
1942 struct ptlrpc_service_part *svcpt;
1944 svcpt = req->rq_rqbd->rqbd_svcpt;
1945 /* If the server sent early reply for this request,
1946 * the client will recalculate the timeout according to
1947 * current server estimate service time, so we will
1948 * use the maxium timeout here for waiting the client
1949 * sending the next req */
1950 to = max((int)at_est2timeout(
1951 at_get(&svcpt->scp_at_estimate)),
1952 (int)lustre_msg_get_timeout(req->rq_reqmsg));
1953 /* Add net_latency (see ptlrpc_replay_req) */
1954 to += lustre_msg_get_service_time(req->rq_reqmsg);
1956 extend_recovery_timer(class_exp2obd(req->rq_export), to, true);
1962 static int target_recovery_thread(void *arg)
1964 struct lu_target *lut = arg;
1965 struct obd_device *obd = lut->lut_obd;
1966 struct ptlrpc_request *req;
1967 struct target_recovery_data *trd = &obd->obd_recovery_data;
1968 unsigned long delta;
1969 unsigned long flags;
1971 struct ptlrpc_thread *thread = NULL;
1975 cfs_daemonize_ctxt("tgt_recov");
1977 SIGNAL_MASK_LOCK(current, flags);
1978 sigfillset(¤t->blocked);
1980 SIGNAL_MASK_UNLOCK(current, flags);
1982 OBD_ALLOC_PTR(thread);
1988 OBD_FREE_PTR(thread);
1992 rc = lu_context_init(&env->le_ctx, LCT_MD_THREAD | LCT_DT_THREAD);
1994 OBD_FREE_PTR(thread);
1999 thread->t_env = env;
2000 thread->t_id = -1; /* force filter_iobuf_get/put to use local buffers */
2001 env->le_ctx.lc_thread = thread;
2002 thread->t_data = NULL;
2003 thread->t_watchdog = NULL;
2005 CDEBUG(D_HA, "%s: started recovery thread pid %d\n", obd->obd_name,
2007 trd->trd_processing_task = cfs_curproc_pid();
2009 cfs_spin_lock(&obd->obd_dev_lock);
2010 obd->obd_recovering = 1;
2011 cfs_spin_unlock(&obd->obd_dev_lock);
2012 cfs_complete(&trd->trd_starting);
2014 /* first of all, we have to know the first transno to replay */
2015 if (target_recovery_overseer(obd, check_for_clients,
2016 exp_connect_healthy)) {
2017 abort_req_replay_queue(obd);
2018 abort_lock_replay_queue(obd);
2021 /* next stage: replay requests */
2023 CDEBUG(D_INFO, "1: request replay stage - %d clients from t"LPU64"\n",
2024 cfs_atomic_read(&obd->obd_req_replay_clients),
2025 obd->obd_next_recovery_transno);
2026 while ((req = target_next_replay_req(obd))) {
2027 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2028 DEBUG_REQ(D_HA, req, "processing t"LPD64" from %s",
2029 lustre_msg_get_transno(req->rq_reqmsg),
2030 libcfs_nid2str(req->rq_peer.nid));
2031 handle_recovery_req(thread, req,
2032 trd->trd_recovery_handler);
2034 * bz18031: increase next_recovery_transno before
2035 * target_request_copy_put() will drop exp_rpc reference
2037 cfs_spin_lock(&obd->obd_recovery_task_lock);
2038 obd->obd_next_recovery_transno++;
2039 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2040 target_exp_dequeue_req_replay(req);
2041 target_request_copy_put(req);
2042 obd->obd_replayed_requests++;
2046 * The second stage: replay locks
2048 CDEBUG(D_INFO, "2: lock replay stage - %d clients\n",
2049 cfs_atomic_read(&obd->obd_lock_replay_clients));
2050 while ((req = target_next_replay_lock(obd))) {
2051 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2052 DEBUG_REQ(D_HA, req, "processing lock from %s: ",
2053 libcfs_nid2str(req->rq_peer.nid));
2054 handle_recovery_req(thread, req,
2055 trd->trd_recovery_handler);
2056 target_request_copy_put(req);
2057 obd->obd_replayed_locks++;
2061 * The third stage: reply on final pings, at this moment all clients
2062 * must have request in final queue
2064 CDEBUG(D_INFO, "3: final stage - process recovery completion pings\n");
2065 /** Update server last boot epoch */
2066 lut_boot_epoch_update(lut);
2067 /* We drop recoverying flag to forward all new requests
2068 * to regular mds_handle() since now */
2069 cfs_spin_lock(&obd->obd_dev_lock);
2070 obd->obd_recovering = obd->obd_abort_recovery = 0;
2071 cfs_spin_unlock(&obd->obd_dev_lock);
2072 cfs_spin_lock(&obd->obd_recovery_task_lock);
2073 target_cancel_recovery_timer(obd);
2074 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2075 while ((req = target_next_final_ping(obd))) {
2076 LASSERT(trd->trd_processing_task == cfs_curproc_pid());
2077 DEBUG_REQ(D_HA, req, "processing final ping from %s: ",
2078 libcfs_nid2str(req->rq_peer.nid));
2079 handle_recovery_req(thread, req,
2080 trd->trd_recovery_handler);
2081 target_request_copy_put(req);
2084 delta = (jiffies - delta) / CFS_HZ;
2085 CDEBUG(D_INFO,"4: recovery completed in %lus - %d/%d reqs/locks\n",
2086 delta, obd->obd_replayed_requests, obd->obd_replayed_locks);
2087 if (delta > OBD_RECOVERY_TIME_SOFT) {
2088 CWARN("too long recovery - read logs\n");
2089 libcfs_debug_dumplog();
2092 target_finish_recovery(obd);
2094 lu_context_fini(&env->le_ctx);
2095 trd->trd_processing_task = 0;
2096 cfs_complete(&trd->trd_finishing);
2098 OBD_FREE_PTR(thread);
2103 static int target_start_recovery_thread(struct lu_target *lut,
2104 svc_handler_t handler)
2106 struct obd_device *obd = lut->lut_obd;
2108 struct target_recovery_data *trd = &obd->obd_recovery_data;
2110 memset(trd, 0, sizeof(*trd));
2111 cfs_init_completion(&trd->trd_starting);
2112 cfs_init_completion(&trd->trd_finishing);
2113 trd->trd_recovery_handler = handler;
2115 if (cfs_create_thread(target_recovery_thread, lut, 0) > 0) {
2116 cfs_wait_for_completion(&trd->trd_starting);
2117 LASSERT(obd->obd_recovering != 0);
2124 void target_stop_recovery_thread(struct obd_device *obd)
2126 if (obd->obd_recovery_data.trd_processing_task > 0) {
2127 struct target_recovery_data *trd = &obd->obd_recovery_data;
2128 /** recovery can be done but postrecovery is not yet */
2129 cfs_spin_lock(&obd->obd_dev_lock);
2130 if (obd->obd_recovering) {
2131 CERROR("%s: Aborting recovery\n", obd->obd_name);
2132 obd->obd_abort_recovery = 1;
2133 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2135 cfs_spin_unlock(&obd->obd_dev_lock);
2136 cfs_wait_for_completion(&trd->trd_finishing);
2140 void target_recovery_fini(struct obd_device *obd)
2142 class_disconnect_exports(obd);
2143 target_stop_recovery_thread(obd);
2144 target_cleanup_recovery(obd);
2146 EXPORT_SYMBOL(target_recovery_fini);
2148 static void target_recovery_expired(unsigned long castmeharder)
2150 struct obd_device *obd = (struct obd_device *)castmeharder;
2151 CDEBUG(D_HA, "%s: recovery timed out; %d clients are still in recovery"
2152 " after %lds (%d clients connected)\n",
2153 obd->obd_name, cfs_atomic_read(&obd->obd_lock_replay_clients),
2154 cfs_time_current_sec()- obd->obd_recovery_start,
2155 cfs_atomic_read(&obd->obd_connected_clients));
2157 obd->obd_recovery_expired = 1;
2158 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2161 void target_recovery_init(struct lu_target *lut, svc_handler_t handler)
2163 struct obd_device *obd = lut->lut_obd;
2164 if (obd->obd_max_recoverable_clients == 0) {
2165 /** Update server last boot epoch */
2166 lut_boot_epoch_update(lut);
2170 CWARN("RECOVERY: service %s, %d recoverable clients, "
2171 "last_transno "LPU64"\n", obd->obd_name,
2172 obd->obd_max_recoverable_clients, obd->obd_last_committed);
2173 LASSERT(obd->obd_stopping == 0);
2174 obd->obd_next_recovery_transno = obd->obd_last_committed + 1;
2175 obd->obd_recovery_start = 0;
2176 obd->obd_recovery_end = 0;
2178 cfs_timer_init(&obd->obd_recovery_timer, target_recovery_expired, obd);
2179 target_start_recovery_thread(lut, handler);
2181 EXPORT_SYMBOL(target_recovery_init);
2183 #endif /* __KERNEL__ */
2185 static int target_process_req_flags(struct obd_device *obd,
2186 struct ptlrpc_request *req)
2188 struct obd_export *exp = req->rq_export;
2189 LASSERT(exp != NULL);
2190 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REQ_REPLAY_DONE) {
2191 /* client declares he's ready to replay locks */
2192 cfs_spin_lock(&exp->exp_lock);
2193 if (exp->exp_req_replay_needed) {
2194 exp->exp_req_replay_needed = 0;
2195 cfs_spin_unlock(&exp->exp_lock);
2197 LASSERT_ATOMIC_POS(&obd->obd_req_replay_clients);
2198 cfs_atomic_dec(&obd->obd_req_replay_clients);
2200 cfs_spin_unlock(&exp->exp_lock);
2203 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LOCK_REPLAY_DONE) {
2204 /* client declares he's ready to complete recovery
2205 * so, we put the request on th final queue */
2206 cfs_spin_lock(&exp->exp_lock);
2207 if (exp->exp_lock_replay_needed) {
2208 exp->exp_lock_replay_needed = 0;
2209 cfs_spin_unlock(&exp->exp_lock);
2211 LASSERT_ATOMIC_POS(&obd->obd_lock_replay_clients);
2212 cfs_atomic_dec(&obd->obd_lock_replay_clients);
2214 cfs_spin_unlock(&exp->exp_lock);
2220 int target_queue_recovery_request(struct ptlrpc_request *req,
2221 struct obd_device *obd)
2225 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
2228 if (obd->obd_recovery_data.trd_processing_task == cfs_curproc_pid()) {
2229 /* Processing the queue right now, don't re-add. */
2233 target_process_req_flags(obd, req);
2235 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LOCK_REPLAY_DONE) {
2236 /* client declares he's ready to complete recovery
2237 * so, we put the request on th final queue */
2238 target_request_copy_get(req);
2239 DEBUG_REQ(D_HA, req, "queue final req");
2240 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2241 cfs_spin_lock(&obd->obd_recovery_task_lock);
2242 if (obd->obd_recovering) {
2243 cfs_list_add_tail(&req->rq_list,
2244 &obd->obd_final_req_queue);
2246 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2247 target_request_copy_put(req);
2248 RETURN(obd->obd_stopping ? -ENOTCONN : 1);
2250 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2253 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REQ_REPLAY_DONE) {
2254 /* client declares he's ready to replay locks */
2255 target_request_copy_get(req);
2256 DEBUG_REQ(D_HA, req, "queue lock replay req");
2257 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2258 cfs_spin_lock(&obd->obd_recovery_task_lock);
2259 LASSERT(obd->obd_recovering);
2260 /* usually due to recovery abort */
2261 if (!req->rq_export->exp_in_recovery) {
2262 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2263 target_request_copy_put(req);
2266 LASSERT(req->rq_export->exp_lock_replay_needed);
2267 cfs_list_add_tail(&req->rq_list, &obd->obd_lock_replay_queue);
2268 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2272 /* CAVEAT EMPTOR: The incoming request message has been swabbed
2273 * (i.e. buflens etc are in my own byte order), but type-dependent
2274 * buffers (eg mdt_body, ost_body etc) have NOT been swabbed. */
2277 CFS_INIT_LIST_HEAD(&req->rq_list);
2278 DEBUG_REQ(D_HA, req, "not queueing");
2282 /* If we're processing the queue, we want don't want to queue this
2285 * Also, if this request has a transno less than the one we're waiting
2286 * for, we should process it now. It could (and currently always will)
2287 * be an open request for a descriptor that was opened some time ago.
2289 * Also, a resent, replayed request that has already been
2290 * handled will pass through here and be processed immediately.
2292 CDEBUG(D_HA, "Next recovery transno: "LPU64
2293 ", current: "LPU64", replaying\n",
2294 obd->obd_next_recovery_transno, transno);
2295 cfs_spin_lock(&obd->obd_recovery_task_lock);
2296 if (transno < obd->obd_next_recovery_transno) {
2297 /* Processing the queue right now, don't re-add. */
2298 LASSERT(cfs_list_empty(&req->rq_list));
2299 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2302 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2304 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_REPLAY_DROP))
2307 target_request_copy_get(req);
2308 if (!req->rq_export->exp_in_recovery) {
2309 target_request_copy_put(req);
2312 LASSERT(req->rq_export->exp_req_replay_needed);
2314 if (target_exp_enqueue_req_replay(req)) {
2315 DEBUG_REQ(D_ERROR, req, "dropping resent queued req");
2316 target_request_copy_put(req);
2321 cfs_spin_lock(&obd->obd_recovery_task_lock);
2322 LASSERT(obd->obd_recovering);
2323 cfs_list_for_each(tmp, &obd->obd_req_replay_queue) {
2324 struct ptlrpc_request *reqiter =
2325 cfs_list_entry(tmp, struct ptlrpc_request, rq_list);
2327 if (lustre_msg_get_transno(reqiter->rq_reqmsg) > transno) {
2328 cfs_list_add_tail(&req->rq_list, &reqiter->rq_list);
2333 if (unlikely(lustre_msg_get_transno(reqiter->rq_reqmsg) ==
2335 DEBUG_REQ(D_ERROR, req, "dropping replay: transno "
2336 "has been claimed by another client");
2337 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2338 target_exp_dequeue_req_replay(req);
2339 target_request_copy_put(req);
2345 cfs_list_add_tail(&req->rq_list, &obd->obd_req_replay_queue);
2347 obd->obd_requests_queued_for_recovery++;
2348 cfs_spin_unlock(&obd->obd_recovery_task_lock);
2349 cfs_waitq_signal(&obd->obd_next_transno_waitq);
2353 int target_handle_ping(struct ptlrpc_request *req)
2355 obd_ping(req->rq_svc_thread->t_env, req->rq_export);
2356 return req_capsule_server_pack(&req->rq_pill);
2359 void target_committed_to_req(struct ptlrpc_request *req)
2361 struct obd_export *exp = req->rq_export;
2363 if (!exp->exp_obd->obd_no_transno && req->rq_repmsg != NULL)
2364 lustre_msg_set_last_committed(req->rq_repmsg,
2365 exp->exp_last_committed);
2367 DEBUG_REQ(D_IOCTL, req, "not sending last_committed update (%d/"
2368 "%d)", exp->exp_obd->obd_no_transno,
2369 req->rq_repmsg == NULL);
2371 CDEBUG(D_INFO, "last_committed "LPU64", transno "LPU64", xid "LPU64"\n",
2372 exp->exp_last_committed, req->rq_transno, req->rq_xid);
2374 EXPORT_SYMBOL(target_committed_to_req);
2376 #endif /* HAVE_SERVER_SUPPORT */
2379 * Packs current SLV and Limit into \a req.
2381 int target_pack_pool_reply(struct ptlrpc_request *req)
2383 struct obd_device *obd;
2387 * Check that we still have all structures alive as this may
2388 * be some late rpc in shutdown time.
2390 if (unlikely(!req->rq_export || !req->rq_export->exp_obd ||
2391 !exp_connect_lru_resize(req->rq_export))) {
2392 lustre_msg_set_slv(req->rq_repmsg, 0);
2393 lustre_msg_set_limit(req->rq_repmsg, 0);
2398 * OBD is alive here as export is alive, which we checked above.
2400 obd = req->rq_export->exp_obd;
2402 cfs_read_lock(&obd->obd_pool_lock);
2403 lustre_msg_set_slv(req->rq_repmsg, obd->obd_pool_slv);
2404 lustre_msg_set_limit(req->rq_repmsg, obd->obd_pool_limit);
2405 cfs_read_unlock(&obd->obd_pool_lock);
2410 int target_send_reply_msg(struct ptlrpc_request *req, int rc, int fail_id)
2412 if (OBD_FAIL_CHECK_ORSET(fail_id & ~OBD_FAIL_ONCE, OBD_FAIL_ONCE)) {
2413 DEBUG_REQ(D_ERROR, req, "dropping reply");
2418 DEBUG_REQ(D_NET, req, "processing error (%d)", rc);
2419 req->rq_status = rc;
2420 return (ptlrpc_send_error(req, 1));
2422 DEBUG_REQ(D_NET, req, "sending reply");
2425 return (ptlrpc_send_reply(req, PTLRPC_REPLY_MAYBE_DIFFICULT));
2428 void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
2430 struct ptlrpc_service_part *svcpt;
2432 struct ptlrpc_reply_state *rs;
2433 struct obd_export *exp;
2436 if (req->rq_no_reply) {
2441 svcpt = req->rq_rqbd->rqbd_svcpt;
2442 rs = req->rq_reply_state;
2443 if (rs == NULL || !rs->rs_difficult) {
2445 target_send_reply_msg (req, rc, fail_id);
2450 /* must be an export if locks saved */
2451 LASSERT (req->rq_export != NULL);
2452 /* req/reply consistent */
2453 LASSERT(rs->rs_svcpt == svcpt);
2456 LASSERT (!rs->rs_scheduled);
2457 LASSERT (!rs->rs_scheduled_ever);
2458 LASSERT (!rs->rs_handled);
2459 LASSERT (!rs->rs_on_net);
2460 LASSERT (rs->rs_export == NULL);
2461 LASSERT (cfs_list_empty(&rs->rs_obd_list));
2462 LASSERT (cfs_list_empty(&rs->rs_exp_list));
2464 exp = class_export_get (req->rq_export);
2466 /* disable reply scheduling while I'm setting up */
2467 rs->rs_scheduled = 1;
2469 rs->rs_xid = req->rq_xid;
2470 rs->rs_transno = req->rq_transno;
2471 rs->rs_export = exp;
2472 rs->rs_opc = lustre_msg_get_opc(req->rq_reqmsg);
2474 cfs_spin_lock(&exp->exp_uncommitted_replies_lock);
2475 CDEBUG(D_NET, "rs transno = "LPU64", last committed = "LPU64"\n",
2476 rs->rs_transno, exp->exp_last_committed);
2477 if (rs->rs_transno > exp->exp_last_committed) {
2478 /* not committed already */
2479 cfs_list_add_tail(&rs->rs_obd_list,
2480 &exp->exp_uncommitted_replies);
2482 cfs_spin_unlock (&exp->exp_uncommitted_replies_lock);
2484 cfs_spin_lock(&exp->exp_lock);
2485 cfs_list_add_tail(&rs->rs_exp_list, &exp->exp_outstanding_replies);
2486 cfs_spin_unlock(&exp->exp_lock);
2488 netrc = target_send_reply_msg (req, rc, fail_id);
2490 cfs_spin_lock(&svcpt->scp_rep_lock);
2492 cfs_atomic_inc(&svcpt->scp_nreps_difficult);
2495 /* error sending: reply is off the net. Also we need +1
2496 * reply ref until ptlrpc_handle_rs() is done
2497 * with the reply state (if the send was successful, there
2498 * would have been +1 ref for the net, which
2499 * reply_out_callback leaves alone) */
2501 ptlrpc_rs_addref(rs);
2504 cfs_spin_lock(&rs->rs_lock);
2505 if (rs->rs_transno <= exp->exp_last_committed ||
2506 (!rs->rs_on_net && !rs->rs_no_ack) ||
2507 cfs_list_empty(&rs->rs_exp_list) || /* completed already */
2508 cfs_list_empty(&rs->rs_obd_list)) {
2509 CDEBUG(D_HA, "Schedule reply immediately\n");
2510 ptlrpc_dispatch_difficult_reply(rs);
2512 cfs_list_add(&rs->rs_list, &svcpt->scp_rep_active);
2513 rs->rs_scheduled = 0; /* allow notifier to schedule */
2515 cfs_spin_unlock(&rs->rs_lock);
2516 cfs_spin_unlock(&svcpt->scp_rep_lock);
2520 ldlm_mode_t lck_compat_array[] = {
2521 [LCK_EX] LCK_COMPAT_EX,
2522 [LCK_PW] LCK_COMPAT_PW,
2523 [LCK_PR] LCK_COMPAT_PR,
2524 [LCK_CW] LCK_COMPAT_CW,
2525 [LCK_CR] LCK_COMPAT_CR,
2526 [LCK_NL] LCK_COMPAT_NL,
2527 [LCK_GROUP] LCK_COMPAT_GROUP,
2528 [LCK_COS] LCK_COMPAT_COS,
2532 * Rather arbitrary mapping from LDLM error codes to errno values. This should
2533 * not escape to the user level.
2535 int ldlm_error2errno(ldlm_error_t error)
2543 case ELDLM_LOCK_CHANGED:
2546 case ELDLM_LOCK_ABORTED:
2549 case ELDLM_LOCK_REPLACED:
2552 case ELDLM_NO_LOCK_DATA:
2555 case ELDLM_NAMESPACE_EXISTS:
2558 case ELDLM_BAD_NAMESPACE:
2562 if (((int)error) < 0) /* cast to signed type */
2563 result = error; /* as ldlm_error_t can be unsigned */
2565 CERROR("Invalid DLM result code: %d\n", error);
2571 EXPORT_SYMBOL(ldlm_error2errno);
2574 * Dual to ldlm_error2errno(): maps errno values back to ldlm_error_t.
2576 ldlm_error_t ldlm_errno2error(int err_no)
2585 error = ELDLM_LOCK_CHANGED;
2588 error = ELDLM_LOCK_ABORTED;
2591 error = ELDLM_LOCK_REPLACED;
2594 error = ELDLM_NO_LOCK_DATA;
2597 error = ELDLM_NAMESPACE_EXISTS;
2600 error = ELDLM_BAD_NAMESPACE;
2607 EXPORT_SYMBOL(ldlm_errno2error);
2609 #if LUSTRE_TRACKS_LOCK_EXP_REFS
2610 void ldlm_dump_export_locks(struct obd_export *exp)
2612 cfs_spin_lock(&exp->exp_locks_list_guard);
2613 if (!cfs_list_empty(&exp->exp_locks_list)) {
2614 struct ldlm_lock *lock;
2616 CERROR("dumping locks for export %p,"
2617 "ignore if the unmount doesn't hang\n", exp);
2618 cfs_list_for_each_entry(lock, &exp->exp_locks_list, l_exp_refs_link)
2619 LDLM_ERROR(lock, "lock:");
2621 cfs_spin_unlock(&exp->exp_locks_list_guard);
2625 #ifdef HAVE_SERVER_SUPPORT
2626 static int target_bulk_timeout(void *data)
2629 /* We don't fail the connection here, because having the export
2630 * killed makes the (vital) call to commitrw very sad.
2635 static inline char *bulk2type(struct ptlrpc_bulk_desc *desc)
2637 return desc->bd_type == BULK_GET_SINK ? "GET" : "PUT";
2640 int target_bulk_io(struct obd_export *exp, struct ptlrpc_bulk_desc *desc,
2641 struct l_wait_info *lwi)
2643 struct ptlrpc_request *req = desc->bd_req;
2647 /* Check if there is eviction in progress, and if so, wait for
2649 if (unlikely(cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
2650 *lwi = LWI_INTR(NULL, NULL);
2651 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
2652 !cfs_atomic_read(&exp->exp_obd->
2653 obd_evict_inprogress),
2657 /* Check if client was evicted or tried to reconnect already */
2658 if (exp->exp_failed || exp->exp_abort_active_req) {
2661 if (desc->bd_type == BULK_PUT_SINK)
2662 rc = sptlrpc_svc_wrap_bulk(req, desc);
2664 rc = ptlrpc_start_bulk_transfer(desc);
2667 if (rc == 0 && OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE)) {
2668 ptlrpc_abort_bulk(desc);
2669 } else if (rc == 0) {
2670 time_t start = cfs_time_current_sec();
2672 long timeoutl = req->rq_deadline - cfs_time_current_sec();
2673 cfs_duration_t timeout = timeoutl <= 0 ?
2674 CFS_TICK : cfs_time_seconds(timeoutl);
2675 *lwi = LWI_TIMEOUT_INTERVAL(timeout,
2676 cfs_time_seconds(1),
2677 target_bulk_timeout,
2679 rc = l_wait_event(desc->bd_waitq,
2680 !ptlrpc_server_bulk_active(desc) ||
2682 exp->exp_abort_active_req,
2684 LASSERT(rc == 0 || rc == -ETIMEDOUT);
2685 /* Wait again if we changed deadline */
2686 } while ((rc == -ETIMEDOUT) &&
2687 (req->rq_deadline > cfs_time_current_sec()));
2689 if (rc == -ETIMEDOUT) {
2690 DEBUG_REQ(D_ERROR, req,
2691 "timeout on bulk %s after %ld%+lds",
2693 req->rq_deadline - start,
2694 cfs_time_current_sec() -
2696 ptlrpc_abort_bulk(desc);
2697 } else if (exp->exp_failed) {
2698 DEBUG_REQ(D_ERROR, req, "Eviction on bulk %s",
2701 ptlrpc_abort_bulk(desc);
2702 } else if (exp->exp_abort_active_req) {
2703 DEBUG_REQ(D_ERROR, req, "Reconnect on bulk %s",
2705 /* we don't reply anyway */
2707 ptlrpc_abort_bulk(desc);
2708 } else if (!desc->bd_success ||
2709 desc->bd_nob_transferred != desc->bd_nob) {
2710 DEBUG_REQ(D_ERROR, req, "%s bulk %s %d(%d)",
2712 "truncated" : "network error on",
2714 desc->bd_nob_transferred,
2716 /* XXX should this be a different errno? */
2718 } else if (desc->bd_type == BULK_GET_SINK) {
2719 rc = sptlrpc_svc_unwrap_bulk(req, desc);
2722 DEBUG_REQ(D_ERROR, req, "bulk %s failed: rc %d",
2723 bulk2type(desc), rc);
2728 EXPORT_SYMBOL(target_bulk_io);
2730 #endif /* HAVE_SERVER_SUPPORT */