1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2003 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 # define EXPORT_SYMTAB
25 #define DEBUG_SUBSYSTEM S_LDLM
28 # include <linux/module.h>
30 # include <liblustre.h>
32 #include <linux/obd.h>
33 #include <linux/obd_ost.h> /* for LUSTRE_OSC_NAME */
34 #include <linux/lustre_mds.h> /* for LUSTRE_MDC_NAME */
35 #include <linux/lustre_mgmt.h>
36 #include <linux/lustre_dlm.h>
37 #include <linux/lustre_net.h>
39 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf)
41 struct ptlrpc_connection *conn;
42 struct lustre_cfg* lcfg = buf;
43 struct client_obd *cli = &obddev->u.cli;
44 struct obd_import *imp;
45 struct obd_uuid server_uuid;
46 int rq_portal, rp_portal, connect_op;
47 char *name = obddev->obd_type->typ_name;
48 char *mgmt_name = NULL;
50 struct obd_device *mgmt_obd;
51 mgmtcli_register_for_events_t register_f;
54 /* In a more perfect world, we would hang a ptlrpc_client off of
55 * obd_type and just use the values from there. */
56 if (!strcmp(name, LUSTRE_OSC_NAME)) {
57 rq_portal = OST_REQUEST_PORTAL;
58 rp_portal = OSC_REPLY_PORTAL;
59 connect_op = OST_CONNECT;
60 } else if (!strcmp(name, LUSTRE_MDC_NAME)) {
61 rq_portal = MDS_REQUEST_PORTAL;
62 rp_portal = MDC_REPLY_PORTAL;
63 connect_op = MDS_CONNECT;
64 } else if (!strcmp(name, LUSTRE_MGMTCLI_NAME)) {
65 rq_portal = MGMT_REQUEST_PORTAL;
66 rp_portal = MGMT_REPLY_PORTAL;
67 connect_op = MGMT_CONNECT;
69 CERROR("unknown client OBD type \"%s\", can't setup\n",
74 if (lcfg->lcfg_inllen1 < 1) {
75 CERROR("requires a TARGET UUID\n");
79 if (lcfg->lcfg_inllen1 > 37) {
80 CERROR("client UUID must be less than 38 characters\n");
84 if (lcfg->lcfg_inllen2 < 1) {
85 CERROR("setup requires a SERVER UUID\n");
89 if (lcfg->lcfg_inllen2 > 37) {
90 CERROR("target UUID must be less than 38 characters\n");
94 sema_init(&cli->cl_sem, 1);
95 cli->cl_conn_count = 0;
96 memcpy(server_uuid.uuid, lcfg->lcfg_inlbuf2, min(lcfg->lcfg_inllen2,
97 sizeof(server_uuid)));
100 cli->cl_avail_grant = 0;
101 cli->cl_dirty_max = OSC_MAX_DIRTY_DEFAULT * 1024 * 1024;
102 INIT_LIST_HEAD(&cli->cl_cache_waiters);
103 INIT_LIST_HEAD(&cli->cl_loi_ready_list);
104 INIT_LIST_HEAD(&cli->cl_loi_write_list);
105 spin_lock_init(&cli->cl_loi_list_lock);
106 cli->cl_brw_in_flight = 0;
107 spin_lock_init(&cli->cl_read_rpc_hist.oh_lock);
108 spin_lock_init(&cli->cl_write_rpc_hist.oh_lock);
109 spin_lock_init(&cli->cl_read_page_hist.oh_lock);
110 spin_lock_init(&cli->cl_write_page_hist.oh_lock);
111 cli->cl_max_pages_per_rpc = PTL_MD_MAX_PAGES;
112 cli->cl_max_rpcs_in_flight = OSC_MAX_RIF_DEFAULT;
116 CERROR("ldlm_get_ref failed: %d\n", rc);
120 conn = ptlrpc_uuid_to_connection(&server_uuid);
122 GOTO(err_ldlm, rc = -ENOENT);
124 ptlrpc_init_client(rq_portal, rp_portal, name,
125 &obddev->obd_ldlm_client);
127 imp = class_new_import();
129 ptlrpc_put_connection(conn);
130 GOTO(err_ldlm, rc = -ENOENT);
132 imp->imp_connection = conn;
133 imp->imp_client = &obddev->obd_ldlm_client;
134 imp->imp_obd = obddev;
135 imp->imp_connect_op = connect_op;
136 imp->imp_generation = 0;
137 imp->imp_initial_recov = 1;
138 INIT_LIST_HEAD(&imp->imp_pinger_chain);
139 memcpy(imp->imp_target_uuid.uuid, lcfg->lcfg_inlbuf1,
141 class_import_put(imp);
143 cli->cl_import = imp;
144 cli->cl_max_mds_easize = sizeof(struct lov_mds_md);
145 cli->cl_max_mds_cookiesize = sizeof(struct llog_cookie);
146 cli->cl_sandev = to_kdev_t(0);
148 if (lcfg->lcfg_inllen3 != 0) {
149 if (!strcmp(lcfg->lcfg_inlbuf3, "inactive")) {
150 CDEBUG(D_HA, "marking %s %s->%s as inactive\n",
151 name, obddev->obd_name,
152 imp->imp_target_uuid.uuid);
153 imp->imp_invalid = 1;
155 if (lcfg->lcfg_inllen4 != 0)
156 mgmt_name = lcfg->lcfg_inlbuf4;
158 mgmt_name = lcfg->lcfg_inlbuf3;
162 if (mgmt_name != NULL) {
163 /* Register with management client if we need to. */
164 CDEBUG(D_HA, "%s registering with %s for events about %s\n",
165 obddev->obd_name, mgmt_name, server_uuid.uuid);
167 mgmt_obd = class_name2obd(mgmt_name);
169 CERROR("can't find mgmtcli %s to register\n",
171 GOTO(err_import, rc = -ENOSYS);
174 register_f = inter_module_get("mgmtcli_register_for_events");
176 CERROR("can't i_m_g mgmtcli_register_for_events\n");
177 GOTO(err_import, rc = -ENOSYS);
180 rc = register_f(mgmt_obd, obddev, &imp->imp_target_uuid);
181 inter_module_put("mgmtcli_register_for_events");
184 cli->cl_mgmtcli_obd = mgmt_obd;
190 class_destroy_import(imp);
198 int client_obd_cleanup(struct obd_device *obddev, int flags)
200 struct client_obd *cli = &obddev->u.cli;
204 if (cli->cl_mgmtcli_obd) {
205 mgmtcli_deregister_for_events_t dereg_f;
207 dereg_f = inter_module_get("mgmtcli_deregister_for_events");
208 dereg_f(cli->cl_mgmtcli_obd, obddev);
209 inter_module_put("mgmtcli_deregister_for_events");
211 class_destroy_import(cli->cl_import);
212 cli->cl_import = NULL;
214 ldlm_put_ref(flags & OBD_OPT_FORCE);
219 int client_connect_import(struct lustre_handle *dlm_handle,
220 struct obd_device *obd,
221 struct obd_uuid *cluuid)
223 struct client_obd *cli = &obd->u.cli;
224 struct obd_import *imp = cli->cl_import;
225 struct obd_export *exp;
230 rc = class_connect(dlm_handle, obd, cluuid);
234 cli->cl_conn_count++;
235 if (cli->cl_conn_count > 1)
237 exp = class_conn2export(dlm_handle);
239 if (obd->obd_namespace != NULL)
240 CERROR("already have namespace!\n");
241 obd->obd_namespace = ldlm_namespace_new(obd->obd_name,
242 LDLM_NAMESPACE_CLIENT);
243 if (obd->obd_namespace == NULL)
244 GOTO(out_disco, rc = -ENOMEM);
246 imp->imp_dlm_handle = *dlm_handle;
247 rc = ptlrpc_init_import(imp);
251 exp->exp_connection = ptlrpc_connection_addref(imp->imp_connection);
252 rc = ptlrpc_connect_import(imp, NULL);
254 LASSERT (imp->imp_state == LUSTRE_IMP_DISCON);
262 ldlm_namespace_free(obd->obd_namespace, 0);
263 obd->obd_namespace = NULL;
265 cli->cl_conn_count--;
266 class_disconnect(exp, 0);
268 class_export_put(exp);
275 int client_disconnect_export(struct obd_export *exp, int failover)
277 struct obd_device *obd = class_exp2obd(exp);
278 struct client_obd *cli = &obd->u.cli;
279 struct obd_import *imp = cli->cl_import;
284 CERROR("invalid export for disconnect: exp %p cookie "LPX64"\n",
285 exp, exp ? exp->exp_handle.h_cookie : -1);
290 if (!cli->cl_conn_count) {
291 CERROR("disconnecting disconnected device (%s)\n",
293 GOTO(out_sem, rc = -EINVAL);
296 cli->cl_conn_count--;
297 if (cli->cl_conn_count)
298 GOTO(out_no_disconnect, rc = 0);
300 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
301 * delete it regardless. (It's safe to delete an import that was
303 (void)ptlrpc_pinger_del_import(imp);
305 if (obd->obd_namespace != NULL) {
306 /* obd_no_recov == local only */
307 ldlm_cli_cancel_unused(obd->obd_namespace, NULL,
308 obd->obd_no_recov, NULL);
309 ldlm_namespace_free(obd->obd_namespace, obd->obd_no_recov);
310 obd->obd_namespace = NULL;
313 /* Yeah, obd_no_recov also (mainly) means "forced shutdown". */
314 if (obd->obd_no_recov)
315 ptlrpc_set_import_active(imp, 0);
317 rc = ptlrpc_disconnect_import(imp);
321 err = class_disconnect(exp, 0);
329 /* --------------------------------------------------------------------------
330 * from old lib/target.c
331 * -------------------------------------------------------------------------- */
333 int target_handle_reconnect(struct lustre_handle *conn, struct obd_export *exp,
334 struct obd_uuid *cluuid)
336 if (exp->exp_connection) {
337 struct lustre_handle *hdl;
338 hdl = &exp->exp_imp_reverse->imp_remote_handle;
339 /* Might be a re-connect after a partition. */
340 if (!memcmp(&conn->cookie, &hdl->cookie, sizeof conn->cookie)) {
341 CERROR("%s reconnecting\n", cluuid->uuid);
342 conn->cookie = exp->exp_handle.h_cookie;
345 CERROR("%s reconnecting from %s, "
346 "handle mismatch (ours "LPX64", theirs "
347 LPX64")\n", cluuid->uuid,
348 exp->exp_connection->c_remote_uuid.uuid,
349 hdl->cookie, conn->cookie);
350 memset(conn, 0, sizeof *conn);
355 conn->cookie = exp->exp_handle.h_cookie;
356 CDEBUG(D_INFO, "existing export for UUID '%s' at %p\n",
358 CDEBUG(D_IOCTL,"connect: cookie "LPX64"\n", conn->cookie);
362 int target_handle_connect(struct ptlrpc_request *req, svc_handler_t handler)
364 struct obd_device *target;
365 struct obd_export *export = NULL;
366 struct obd_import *revimp;
367 struct lustre_handle conn;
368 struct obd_uuid tgtuuid;
369 struct obd_uuid cluuid;
370 struct obd_uuid remote_uuid;
373 int rc = 0, abort_recovery;
376 LASSERT_REQSWAB (req, 0);
377 str = lustre_msg_string(req->rq_reqmsg, 0, sizeof(tgtuuid) - 1);
379 CERROR("bad target UUID for connect\n");
380 GOTO(out, rc = -EINVAL);
383 obd_str2uuid (&tgtuuid, str);
384 target = class_uuid2obd(&tgtuuid);
386 target = class_name2obd(str);
389 if (!target || target->obd_stopping || !target->obd_set_up) {
390 CERROR("UUID '%s' is not available for connect\n", str);
391 GOTO(out, rc = -ENODEV);
394 LASSERT_REQSWAB (req, 1);
395 str = lustre_msg_string(req->rq_reqmsg, 1, sizeof(cluuid) - 1);
397 CERROR("bad client UUID for connect\n");
398 GOTO(out, rc = -EINVAL);
401 obd_str2uuid (&cluuid, str);
403 /* XXX extract a nettype and format accordingly */
404 snprintf(remote_uuid.uuid, sizeof remote_uuid,
405 "NET_"LPX64"_UUID", req->rq_peer.peer_nid);
407 spin_lock_bh(&target->obd_processing_task_lock);
408 abort_recovery = target->obd_abort_recovery;
409 spin_unlock_bh(&target->obd_processing_task_lock);
411 target_abort_recovery(target);
413 tmp = lustre_msg_buf(req->rq_reqmsg, 2, sizeof conn);
415 GOTO(out, rc = -EPROTO);
417 memcpy(&conn, tmp, sizeof conn);
419 rc = lustre_pack_reply(req, 0, NULL, NULL);
423 /* lctl gets a backstage, all-access pass. */
424 if (obd_uuid_equals(&cluuid, &target->obd_uuid))
425 goto dont_check_exports;
427 spin_lock(&target->obd_dev_lock);
428 list_for_each(p, &target->obd_exports) {
429 export = list_entry(p, struct obd_export, exp_obd_chain);
430 if (obd_uuid_equals(&cluuid, &export->exp_client_uuid)) {
431 spin_unlock(&target->obd_dev_lock);
432 LASSERT(export->exp_obd == target);
434 rc = target_handle_reconnect(&conn, export, &cluuid);
439 /* If we found an export, we already unlocked. */
441 spin_unlock(&target->obd_dev_lock);
442 } else if (req->rq_reqmsg->conn_cnt == 1) {
443 CERROR("%s reconnected with 1 conn_cnt; cookies not random?\n",
445 GOTO(out, rc = -EALREADY);
448 /* Tell the client if we're in recovery. */
449 /* If this is the first client, start the recovery timer */
450 if (target->obd_recovering) {
451 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
452 target_start_recovery_timer(target, handler);
455 /* Tell the client if we support replayable requests */
456 if (target->obd_replayable)
457 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
459 if (export == NULL) {
460 if (target->obd_recovering) {
461 CERROR("denying connection for new client %s: "
462 "%d clients in recovery for %lds\n", cluuid.uuid,
463 target->obd_recoverable_clients,
464 (target->obd_recovery_timer.expires-jiffies)/HZ);
468 rc = obd_connect(&conn, target, &cluuid);
473 /* If all else goes well, this is our RPC return code. */
476 if (rc && rc != EALREADY)
479 /* XXX track this all the time? */
480 if (target->obd_recovering) {
481 target->obd_connected_clients++;
484 req->rq_repmsg->handle = conn;
486 /* If the client and the server are the same node, we will already
487 * have an export that really points to the client's DLM export,
488 * because we have a shared handles table.
490 * XXX this will go away when shaver stops sending the "connect" handle
491 * in the real "remote handle" field of the request --phik 24 Apr 2003
493 if (req->rq_export != NULL)
494 class_export_put(req->rq_export);
496 /* ownership of this export ref transfers to the request */
497 export = req->rq_export = class_conn2export(&conn);
498 LASSERT(export != NULL);
500 /* request from liblustre? */
501 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT)
502 export->exp_libclient = 1;
504 if (export->exp_connection != NULL)
505 ptlrpc_put_connection(export->exp_connection);
506 export->exp_connection = ptlrpc_get_connection(&req->rq_peer,
509 LASSERT(export->exp_conn_cnt < req->rq_reqmsg->conn_cnt);
510 export->exp_conn_cnt = req->rq_reqmsg->conn_cnt;
512 if (rc == EALREADY) {
513 /* We indicate the reconnection in a flag, not an error code. */
514 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
518 memcpy(&conn, lustre_msg_buf(req->rq_reqmsg, 2, sizeof conn),
521 if (export->exp_imp_reverse != NULL)
522 class_destroy_import(export->exp_imp_reverse);
523 revimp = export->exp_imp_reverse = class_new_import();
524 revimp->imp_connection = ptlrpc_connection_addref(export->exp_connection);
525 revimp->imp_client = &export->exp_obd->obd_ldlm_client;
526 revimp->imp_remote_handle = conn;
527 revimp->imp_obd = target;
528 revimp->imp_dlm_fake = 1;
529 revimp->imp_state = LUSTRE_IMP_FULL;
530 class_import_put(revimp);
537 int target_handle_disconnect(struct ptlrpc_request *req)
539 struct obd_export *exp;
543 rc = lustre_pack_reply(req, 0, NULL, NULL);
547 /* keep the rq_export around so we can send the reply */
548 exp = class_export_get(req->rq_export);
549 req->rq_status = obd_disconnect(exp, 0);
553 void target_destroy_export(struct obd_export *exp)
555 /* exports created from last_rcvd data, and "fake"
556 exports created by lctl don't have an import */
557 if (exp->exp_imp_reverse != NULL)
558 class_destroy_import(exp->exp_imp_reverse);
560 /* We cancel locks at disconnect time, but this will catch any locks
561 * granted in a race with recovery-induced disconnect. */
562 if (exp->exp_obd->obd_namespace != NULL)
563 ldlm_cancel_locks_for_export(exp);
570 static void abort_delayed_replies(struct obd_device *obd)
572 struct ptlrpc_request *req;
573 struct list_head *tmp, *n;
574 list_for_each_safe(tmp, n, &obd->obd_delayed_reply_queue) {
575 req = list_entry(tmp, struct ptlrpc_request, rq_list);
576 DEBUG_REQ(D_ERROR, req, "aborted:");
577 req->rq_status = -ENOTCONN;
578 req->rq_type = PTL_RPC_MSG_ERR;
580 class_export_put(req->rq_export);
581 list_del(&req->rq_list);
582 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
583 OBD_FREE(req, sizeof *req);
587 static void abort_recovery_queue(struct obd_device *obd)
589 struct ptlrpc_request *req;
590 struct list_head *tmp, *n;
593 list_for_each_safe(tmp, n, &obd->obd_recovery_queue) {
594 req = list_entry(tmp, struct ptlrpc_request, rq_list);
595 DEBUG_REQ(D_ERROR, req, "aborted:");
596 req->rq_status = -ENOTCONN;
597 req->rq_type = PTL_RPC_MSG_ERR;
598 rc = lustre_pack_reply(req, 0, NULL, NULL);
602 DEBUG_REQ(D_ERROR, req,
603 "packing failed for abort-reply; skipping");
605 list_del(&req->rq_list);
606 class_export_put(req->rq_export);
607 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
608 OBD_FREE(req, sizeof *req);
612 void target_abort_recovery(void *data)
614 struct obd_device *obd = data;
617 CERROR("disconnecting clients and aborting recovery\n");
618 spin_lock_bh(&obd->obd_processing_task_lock);
619 if (!obd->obd_recovering) {
620 spin_unlock_bh(&obd->obd_processing_task_lock);
625 obd->obd_recovering = obd->obd_abort_recovery = 0;
627 wake_up(&obd->obd_next_transno_waitq);
628 target_cancel_recovery_timer(obd);
629 spin_unlock_bh(&obd->obd_processing_task_lock);
631 class_disconnect_exports(obd, 0);
633 /* when recovery was aborted, cleanup orphans on mds and ost */
634 if (OBT(obd) && OBP(obd, postrecov)) {
635 rc = OBP(obd, postrecov)(obd);
637 CWARN("Cleanup %d orphans after recovery was aborted\n", rc);
639 CERROR("postrecov failed %d\n", rc);
642 abort_delayed_replies(obd);
643 abort_recovery_queue(obd);
644 ptlrpc_run_recovery_over_upcall(obd);
647 static void target_recovery_expired(unsigned long castmeharder)
649 struct obd_device *obd = (struct obd_device *)castmeharder;
650 CERROR("recovery timed out, aborting\n");
651 spin_lock_bh(&obd->obd_processing_task_lock);
652 obd->obd_abort_recovery = 1;
653 wake_up(&obd->obd_next_transno_waitq);
654 spin_unlock_bh(&obd->obd_processing_task_lock);
658 /* obd_processing_task_lock should be held */
659 void target_cancel_recovery_timer(struct obd_device *obd)
661 CDEBUG(D_HA, "%s: cancel recovery timer\n", obd->obd_name);
662 del_timer(&obd->obd_recovery_timer);
665 static void reset_recovery_timer(struct obd_device *obd)
667 spin_lock_bh(&obd->obd_processing_task_lock);
668 if (!obd->obd_recovering) {
669 spin_unlock_bh(&obd->obd_processing_task_lock);
672 CDEBUG(D_HA, "timer will expire in %u seconds\n",
673 OBD_RECOVERY_TIMEOUT / HZ);
674 mod_timer(&obd->obd_recovery_timer, jiffies + OBD_RECOVERY_TIMEOUT);
675 spin_unlock_bh(&obd->obd_processing_task_lock);
679 /* Only start it the first time called */
680 void target_start_recovery_timer(struct obd_device *obd, svc_handler_t handler)
682 spin_lock_bh(&obd->obd_processing_task_lock);
683 if (obd->obd_recovery_handler) {
684 spin_unlock_bh(&obd->obd_processing_task_lock);
687 CWARN("%s: starting recovery timer (%us)\n", obd->obd_name,
688 OBD_RECOVERY_TIMEOUT / HZ);
689 obd->obd_recovery_handler = handler;
690 obd->obd_recovery_timer.function = target_recovery_expired;
691 obd->obd_recovery_timer.data = (unsigned long)obd;
692 init_timer(&obd->obd_recovery_timer);
693 spin_unlock_bh(&obd->obd_processing_task_lock);
695 reset_recovery_timer(obd);
698 static int check_for_next_transno(struct obd_device *obd)
700 struct ptlrpc_request *req;
701 int wake_up = 0, connected, completed, queue_len, max;
702 __u64 next_transno, req_transno;
704 spin_lock_bh(&obd->obd_processing_task_lock);
705 req = list_entry(obd->obd_recovery_queue.next,
706 struct ptlrpc_request, rq_list);
707 max = obd->obd_max_recoverable_clients;
708 req_transno = req->rq_reqmsg->transno;
709 connected = obd->obd_connected_clients;
710 completed = max - obd->obd_recoverable_clients;
711 queue_len = obd->obd_requests_queued_for_recovery;
712 next_transno = obd->obd_next_recovery_transno;
714 if (obd->obd_abort_recovery) {
715 CDEBUG(D_HA, "waking for aborted recovery\n");
717 } else if (!obd->obd_recovering) {
718 CDEBUG(D_HA, "waking for completed recovery (?)\n");
720 } else if (req_transno == next_transno) {
721 CDEBUG(D_HA, "waking for next ("LPD64")\n", next_transno);
723 } else if (queue_len + completed == max) {
725 "waking for skipped transno (skip: "LPD64
726 ", ql: %d, comp: %d, conn: %d, next: "LPD64")\n",
727 next_transno, queue_len, completed, max, req_transno);
728 obd->obd_next_recovery_transno = req_transno;
731 spin_unlock_bh(&obd->obd_processing_task_lock);
732 LASSERT(req->rq_reqmsg->transno >= next_transno);
736 static void process_recovery_queue(struct obd_device *obd)
738 struct ptlrpc_request *req;
739 int abort_recovery = 0;
740 struct l_wait_info lwi = { 0 };
744 spin_lock_bh(&obd->obd_processing_task_lock);
745 LASSERT(obd->obd_processing_task == current->pid);
746 req = list_entry(obd->obd_recovery_queue.next,
747 struct ptlrpc_request, rq_list);
749 if (req->rq_reqmsg->transno != obd->obd_next_recovery_transno) {
750 spin_unlock_bh(&obd->obd_processing_task_lock);
751 CDEBUG(D_HA, "Waiting for transno "LPD64" (1st is "
753 obd->obd_next_recovery_transno,
754 req->rq_reqmsg->transno);
755 l_wait_event(obd->obd_next_transno_waitq,
756 check_for_next_transno(obd), &lwi);
757 spin_lock_bh(&obd->obd_processing_task_lock);
758 abort_recovery = obd->obd_abort_recovery;
759 spin_unlock_bh(&obd->obd_processing_task_lock);
760 if (abort_recovery) {
761 target_abort_recovery(obd);
766 list_del_init(&req->rq_list);
767 obd->obd_requests_queued_for_recovery--;
768 spin_unlock_bh(&obd->obd_processing_task_lock);
770 DEBUG_REQ(D_HA, req, "processing: ");
771 (void)obd->obd_recovery_handler(req);
772 obd->obd_replayed_requests++;
773 reset_recovery_timer(obd);
774 /* bug 1580: decide how to properly sync() in recovery */
775 //mds_fsync_super(mds->mds_sb);
776 class_export_put(req->rq_export);
777 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
778 OBD_FREE(req, sizeof *req);
779 spin_lock_bh(&obd->obd_processing_task_lock);
780 obd->obd_next_recovery_transno++;
781 if (list_empty(&obd->obd_recovery_queue)) {
782 obd->obd_processing_task = 0;
783 spin_unlock_bh(&obd->obd_processing_task_lock);
786 spin_unlock_bh(&obd->obd_processing_task_lock);
791 int target_queue_recovery_request(struct ptlrpc_request *req,
792 struct obd_device *obd)
794 struct list_head *tmp;
796 __u64 transno = req->rq_reqmsg->transno;
797 struct ptlrpc_request *saved_req;
798 struct lustre_msg *reqmsg;
800 /* CAVEAT EMPTOR: The incoming request message has been swabbed
801 * (i.e. buflens etc are in my own byte order), but type-dependent
802 * buffers (eg mds_body, ost_body etc) have NOT been swabbed. */
805 INIT_LIST_HEAD(&req->rq_list);
806 DEBUG_REQ(D_HA, req, "not queueing");
810 /* XXX If I were a real man, these LBUGs would be sane cleanups. */
811 /* XXX just like the request-dup code in queue_final_reply */
812 OBD_ALLOC(saved_req, sizeof *saved_req);
815 OBD_ALLOC(reqmsg, req->rq_reqlen);
819 spin_lock_bh(&obd->obd_processing_task_lock);
821 /* If we're processing the queue, we want don't want to queue this
824 * Also, if this request has a transno less than the one we're waiting
825 * for, we should process it now. It could (and currently always will)
826 * be an open request for a descriptor that was opened some time ago.
828 if (obd->obd_processing_task == current->pid ||
829 transno < obd->obd_next_recovery_transno) {
830 /* Processing the queue right now, don't re-add. */
831 LASSERT(list_empty(&req->rq_list));
832 spin_unlock_bh(&obd->obd_processing_task_lock);
833 OBD_FREE(reqmsg, req->rq_reqlen);
834 OBD_FREE(saved_req, sizeof *saved_req);
838 memcpy(saved_req, req, sizeof *req);
839 memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
841 req->rq_reqmsg = reqmsg;
842 class_export_get(req->rq_export);
843 INIT_LIST_HEAD(&req->rq_list);
846 list_for_each(tmp, &obd->obd_recovery_queue) {
847 struct ptlrpc_request *reqiter =
848 list_entry(tmp, struct ptlrpc_request, rq_list);
850 if (reqiter->rq_reqmsg->transno > transno) {
851 list_add_tail(&req->rq_list, &reqiter->rq_list);
858 list_add_tail(&req->rq_list, &obd->obd_recovery_queue);
861 obd->obd_requests_queued_for_recovery++;
863 if (obd->obd_processing_task != 0) {
864 /* Someone else is processing this queue, we'll leave it to
867 wake_up(&obd->obd_next_transno_waitq);
868 spin_unlock_bh(&obd->obd_processing_task_lock);
872 /* Nobody is processing, and we know there's (at least) one to process
873 * now, so we'll do the honours.
875 obd->obd_processing_task = current->pid;
876 spin_unlock_bh(&obd->obd_processing_task_lock);
878 process_recovery_queue(obd);
882 struct obd_device * target_req2obd(struct ptlrpc_request *req)
884 return req->rq_export->exp_obd;
887 int target_queue_final_reply(struct ptlrpc_request *req, int rc)
889 struct obd_device *obd = target_req2obd(req);
890 struct ptlrpc_request *saved_req;
891 struct lustre_msg *reqmsg;
892 int recovery_done = 0;
895 LASSERT ((rc == 0) == (req->rq_reply_state != NULL));
898 /* Just like ptlrpc_error, but without the sending. */
899 rc = lustre_pack_reply(req, 0, NULL, NULL);
900 LASSERT(rc == 0); /* XXX handle this */
901 req->rq_type = PTL_RPC_MSG_ERR;
904 LASSERT (!req->rq_reply_state->rs_difficult);
905 LASSERT(list_empty(&req->rq_list));
906 /* XXX a bit like the request-dup code in queue_recovery_request */
907 OBD_ALLOC(saved_req, sizeof *saved_req);
910 OBD_ALLOC(reqmsg, req->rq_reqlen);
913 memcpy(saved_req, req, sizeof *saved_req);
914 memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
915 /* the copied req takes over the reply state */
916 req->rq_reply_state = NULL;
918 req->rq_reqmsg = reqmsg;
919 class_export_get(req->rq_export);
920 list_add(&req->rq_list, &obd->obd_delayed_reply_queue);
922 spin_lock_bh(&obd->obd_processing_task_lock);
923 --obd->obd_recoverable_clients;
924 recovery_done = (obd->obd_recoverable_clients == 0);
925 spin_unlock_bh(&obd->obd_processing_task_lock);
928 struct list_head *tmp, *n;
929 ldlm_reprocess_all_ns(req->rq_export->exp_obd->obd_namespace);
930 CWARN("%s: all clients recovered, sending delayed replies\n",
932 spin_lock_bh(&obd->obd_processing_task_lock);
933 obd->obd_recovering = 0;
934 target_cancel_recovery_timer(obd);
935 spin_unlock_bh(&obd->obd_processing_task_lock);
937 /* when recovery finished, cleanup orphans on mds and ost */
938 if (OBT(obd) && OBP(obd, postrecov)) {
939 rc2 = OBP(obd, postrecov)(obd);
941 CWARN("%s: all clients recovered, %d MDS "
942 "orphans deleted\n", obd->obd_name, rc2);
944 CERROR("postrecov failed %d\n", rc2);
947 list_for_each_safe(tmp, n, &obd->obd_delayed_reply_queue) {
948 req = list_entry(tmp, struct ptlrpc_request, rq_list);
949 DEBUG_REQ(D_ERROR, req, "delayed:");
951 class_export_put(req->rq_export);
952 list_del(&req->rq_list);
953 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
954 OBD_FREE(req, sizeof *req);
956 ptlrpc_run_recovery_over_upcall(obd);
958 CWARN("%s: %d recoverable clients remain\n",
959 obd->obd_name, obd->obd_recoverable_clients);
960 wake_up(&obd->obd_next_transno_waitq);
967 target_send_reply_msg (struct ptlrpc_request *req, int rc, int fail_id)
969 if (OBD_FAIL_CHECK(fail_id | OBD_FAIL_ONCE)) {
970 obd_fail_loc |= OBD_FAIL_ONCE | OBD_FAILED;
971 DEBUG_REQ(D_ERROR, req, "dropping reply");
972 /* NB this does _not_ send with ACK disabled, to simulate
973 * sending OK, but timing out for the ACK */
974 if (req->rq_reply_state != NULL) {
975 if (!req->rq_reply_state->rs_difficult) {
976 lustre_free_reply_state (req->rq_reply_state);
977 req->rq_reply_state = NULL;
979 struct ptlrpc_service *svc =
980 req->rq_rqbd->rqbd_srv_ni->sni_service;
981 atomic_inc(&svc->srv_outstanding_replies);
988 DEBUG_REQ(D_ERROR, req, "processing error (%d)", rc);
989 if (req->rq_reply_state == NULL) {
990 rc = lustre_pack_reply (req, 0, NULL, NULL);
992 CERROR ("can't allocate reply\n");
996 req->rq_type = PTL_RPC_MSG_ERR;
998 DEBUG_REQ(D_NET, req, "sending reply");
1001 return (ptlrpc_send_reply(req, 1));
1005 target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
1008 unsigned long flags;
1009 struct ptlrpc_reply_state *rs;
1010 struct obd_device *obd;
1011 struct obd_export *exp;
1012 struct ptlrpc_srv_ni *sni;
1013 struct ptlrpc_service *svc;
1015 sni = req->rq_rqbd->rqbd_srv_ni;
1016 svc = sni->sni_service;
1018 rs = req->rq_reply_state;
1019 if (rs == NULL || !rs->rs_difficult) {
1020 /* The easy case; no notifiers and reply_out_callback()
1021 * cleans up (i.e. we can't look inside rs after a
1022 * successful send) */
1023 netrc = target_send_reply_msg (req, rc, fail_id);
1025 LASSERT (netrc == 0 || req->rq_reply_state == NULL);
1029 /* must be an export if locks saved */
1030 LASSERT (req->rq_export != NULL);
1031 /* req/reply consistent */
1032 LASSERT (rs->rs_srv_ni == sni);
1035 LASSERT (!rs->rs_scheduled);
1036 LASSERT (!rs->rs_scheduled_ever);
1037 LASSERT (!rs->rs_handled);
1038 LASSERT (!rs->rs_on_net);
1039 LASSERT (rs->rs_export == NULL);
1040 LASSERT (list_empty(&rs->rs_obd_list));
1041 LASSERT (list_empty(&rs->rs_exp_list));
1043 exp = class_export_get (req->rq_export);
1046 /* disable reply scheduling onto srv_reply_queue while I'm setting up */
1047 rs->rs_scheduled = 1;
1049 rs->rs_xid = req->rq_xid;
1050 rs->rs_transno = req->rq_transno;
1051 rs->rs_export = exp;
1053 spin_lock_irqsave (&obd->obd_uncommitted_replies_lock, flags);
1055 if (rs->rs_transno > obd->obd_last_committed) {
1056 /* not committed already */
1057 list_add_tail (&rs->rs_obd_list,
1058 &obd->obd_uncommitted_replies);
1061 spin_unlock (&obd->obd_uncommitted_replies_lock);
1062 spin_lock (&exp->exp_lock);
1064 list_add_tail (&rs->rs_exp_list, &exp->exp_outstanding_replies);
1066 spin_unlock_irqrestore (&exp->exp_lock, flags);
1068 netrc = target_send_reply_msg (req, rc, fail_id);
1070 spin_lock_irqsave (&svc->srv_lock, flags);
1072 svc->srv_n_difficult_replies++;
1074 if (netrc != 0) /* error sending: reply is off the net */
1077 if (!rs->rs_on_net || /* some notifier */
1078 list_empty(&rs->rs_exp_list) || /* completed already */
1079 list_empty(&rs->rs_obd_list)) {
1080 list_add_tail (&rs->rs_list, &svc->srv_reply_queue);
1081 wake_up (&svc->srv_waitq);
1083 list_add (&rs->rs_list, &sni->sni_active_replies);
1084 rs->rs_scheduled = 0; /* allow notifier to schedule */
1087 spin_unlock_irqrestore (&svc->srv_lock, flags);
1090 int target_handle_ping(struct ptlrpc_request *req)
1092 return lustre_pack_reply(req, 0, NULL, NULL);