diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/ptlrpc/recover.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/ptlrpc/recover.c | 374 |
1 files changed, 0 insertions, 374 deletions
diff --git a/drivers/staging/lustre/lustre/ptlrpc/recover.c b/drivers/staging/lustre/lustre/ptlrpc/recover.c deleted file mode 100644 index 2ea0a7ff87dd..000000000000 --- a/drivers/staging/lustre/lustre/ptlrpc/recover.c +++ /dev/null @@ -1,374 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see - * http://www.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2015, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - * - * lustre/ptlrpc/recover.c - * - * Author: Mike Shaver <shaver@clusterfs.com> - */ - -#define DEBUG_SUBSYSTEM S_RPC -#include <linux/libcfs/libcfs.h> - -#include <obd_support.h> -#include <lustre_ha.h> -#include <lustre_net.h> -#include <lustre_import.h> -#include <lustre_export.h> -#include <obd.h> -#include <obd_class.h> -#include <linux/list.h> - -#include "ptlrpc_internal.h" - -/** - * Start recovery on disconnected import. - * This is done by just attempting a connect - */ -void ptlrpc_initiate_recovery(struct obd_import *imp) -{ - CDEBUG(D_HA, "%s: starting recovery\n", obd2cli_tgt(imp->imp_obd)); - ptlrpc_connect_import(imp); -} - -/** - * Identify what request from replay list needs to be replayed next - * (based on what we have already replayed) and send it to server. - */ -int ptlrpc_replay_next(struct obd_import *imp, int *inflight) -{ - int rc = 0; - struct ptlrpc_request *req = NULL, *pos; - __u64 last_transno; - - *inflight = 0; - - /* It might have committed some after we last spoke, so make sure we - * get rid of them now. - */ - spin_lock(&imp->imp_lock); - imp->imp_last_transno_checked = 0; - ptlrpc_free_committed(imp); - last_transno = imp->imp_last_replay_transno; - - CDEBUG(D_HA, "import %p from %s committed %llu last %llu\n", - imp, obd2cli_tgt(imp->imp_obd), - imp->imp_peer_committed_transno, last_transno); - - /* Replay all the committed open requests on committed_list first */ - if (!list_empty(&imp->imp_committed_list)) { - req = list_last_entry(&imp->imp_committed_list, - struct ptlrpc_request, rq_replay_list); - - /* The last request on committed_list hasn't been replayed */ - if (req->rq_transno > last_transno) { - if (!imp->imp_resend_replay || - imp->imp_replay_cursor == &imp->imp_committed_list) - imp->imp_replay_cursor = imp->imp_replay_cursor->next; - - while (imp->imp_replay_cursor != - &imp->imp_committed_list) { - req = list_entry(imp->imp_replay_cursor, - struct ptlrpc_request, - rq_replay_list); - if (req->rq_transno > last_transno) - break; - - req = NULL; - LASSERT(!list_empty(imp->imp_replay_cursor)); - imp->imp_replay_cursor = - imp->imp_replay_cursor->next; - } - } else { - /* All requests on committed_list have been replayed */ - imp->imp_replay_cursor = &imp->imp_committed_list; - req = NULL; - } - } - - /* All the requests in committed list have been replayed, let's replay - * the imp_replay_list - */ - if (!req) { - struct ptlrpc_request *tmp; - list_for_each_entry_safe(tmp, pos, &imp->imp_replay_list, - rq_replay_list) { - if (tmp->rq_transno > last_transno) { - req = tmp; - break; - } - } - } - - /* If need to resend the last sent transno (because a reconnect - * has occurred), then stop on the matching req and send it again. - * If, however, the last sent transno has been committed then we - * continue replay from the next request. - */ - if (req && imp->imp_resend_replay) - lustre_msg_add_flags(req->rq_reqmsg, MSG_RESENT); - - /* The resend replay request may have been removed from the - * unreplied list. - */ - if (req && imp->imp_resend_replay && - list_empty(&req->rq_unreplied_list)) { - ptlrpc_add_unreplied(req); - imp->imp_known_replied_xid = ptlrpc_known_replied_xid(imp); - } - - imp->imp_resend_replay = 0; - spin_unlock(&imp->imp_lock); - - if (req) { - /* The request should have been added back in unreplied list - * by ptlrpc_prepare_replay(). - */ - LASSERT(!list_empty(&req->rq_unreplied_list)); - - rc = ptlrpc_replay_req(req); - if (rc) { - CERROR("recovery replay error %d for req %llu\n", - rc, req->rq_xid); - return rc; - } - *inflight = 1; - } - return rc; -} - -/** - * Schedule resending of request on sending_list. This is done after - * we completed replaying of requests and locks. - */ -int ptlrpc_resend(struct obd_import *imp) -{ - struct ptlrpc_request *req, *next; - - /* As long as we're in recovery, nothing should be added to the sending - * list, so we don't need to hold the lock during this iteration and - * resend process. - */ - /* Well... what if lctl recover is called twice at the same time? - */ - spin_lock(&imp->imp_lock); - if (imp->imp_state != LUSTRE_IMP_RECOVER) { - spin_unlock(&imp->imp_lock); - return -1; - } - - list_for_each_entry_safe(req, next, &imp->imp_sending_list, rq_list) { - LASSERTF((long)req > PAGE_SIZE && req != LP_POISON, - "req %p bad\n", req); - LASSERTF(req->rq_type != LI_POISON, "req %p freed\n", req); - - /* - * If the request is allowed to be sent during replay and it - * is not timeout yet, then it does not need to be resent. - */ - if (!ptlrpc_no_resend(req) && - (req->rq_timedout || !req->rq_allow_replay)) - ptlrpc_resend_req(req); - } - spin_unlock(&imp->imp_lock); - - OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT, 2); - return 0; -} - -/** - * Go through all requests in delayed list and wake their threads - * for resending - */ -void ptlrpc_wake_delayed(struct obd_import *imp) -{ - struct ptlrpc_request *req, *pos; - - spin_lock(&imp->imp_lock); - list_for_each_entry_safe(req, pos, &imp->imp_delayed_list, rq_list) { - DEBUG_REQ(D_HA, req, "waking (set %p):", req->rq_set); - ptlrpc_client_wake_req(req); - } - spin_unlock(&imp->imp_lock); -} - -void ptlrpc_request_handle_notconn(struct ptlrpc_request *failed_req) -{ - struct obd_import *imp = failed_req->rq_import; - - CDEBUG(D_HA, "import %s of %s@%s abruptly disconnected: reconnecting\n", - imp->imp_obd->obd_name, obd2cli_tgt(imp->imp_obd), - imp->imp_connection->c_remote_uuid.uuid); - - if (ptlrpc_set_import_discon(imp, - lustre_msg_get_conn_cnt(failed_req->rq_reqmsg))) { - if (!imp->imp_replayable) { - CDEBUG(D_HA, "import %s@%s for %s not replayable, auto-deactivating\n", - obd2cli_tgt(imp->imp_obd), - imp->imp_connection->c_remote_uuid.uuid, - imp->imp_obd->obd_name); - ptlrpc_deactivate_import(imp); - } - /* to control recovery via lctl {disable|enable}_recovery */ - if (imp->imp_deactive == 0) - ptlrpc_connect_import(imp); - } - - /* Wait for recovery to complete and resend. If evicted, then - * this request will be errored out later. - */ - spin_lock(&failed_req->rq_lock); - if (!failed_req->rq_no_resend) - failed_req->rq_resend = 1; - spin_unlock(&failed_req->rq_lock); -} - -/** - * Administratively active/deactive a client. - * This should only be called by the ioctl interface, currently - * - the lctl deactivate and activate commands - * - echo 0/1 >> /sys/fs/lustre/osc/XXX/active - * - client umount -f (ll_umount_begin) - */ -int ptlrpc_set_import_active(struct obd_import *imp, int active) -{ - struct obd_device *obd = imp->imp_obd; - int rc = 0; - - LASSERT(obd); - - /* When deactivating, mark import invalid, and abort in-flight - * requests. - */ - if (!active) { - LCONSOLE_WARN("setting import %s INACTIVE by administrator request\n", - obd2cli_tgt(imp->imp_obd)); - - /* set before invalidate to avoid messages about imp_inval - * set without imp_deactive in ptlrpc_import_delay_req - */ - spin_lock(&imp->imp_lock); - imp->imp_deactive = 1; - spin_unlock(&imp->imp_lock); - - obd_import_event(imp->imp_obd, imp, IMP_EVENT_DEACTIVATE); - - ptlrpc_invalidate_import(imp); - } - - /* When activating, mark import valid, and attempt recovery */ - if (active) { - CDEBUG(D_HA, "setting import %s VALID\n", - obd2cli_tgt(imp->imp_obd)); - - spin_lock(&imp->imp_lock); - imp->imp_deactive = 0; - spin_unlock(&imp->imp_lock); - obd_import_event(imp->imp_obd, imp, IMP_EVENT_ACTIVATE); - - rc = ptlrpc_recover_import(imp, NULL, 0); - } - - return rc; -} -EXPORT_SYMBOL(ptlrpc_set_import_active); - -/* Attempt to reconnect an import */ -int ptlrpc_recover_import(struct obd_import *imp, char *new_uuid, int async) -{ - int rc = 0; - - spin_lock(&imp->imp_lock); - if (imp->imp_state == LUSTRE_IMP_NEW || imp->imp_deactive || - atomic_read(&imp->imp_inval_count)) - rc = -EINVAL; - spin_unlock(&imp->imp_lock); - if (rc) - goto out; - - /* force import to be disconnected. */ - ptlrpc_set_import_discon(imp, 0); - - if (new_uuid) { - struct obd_uuid uuid; - - /* intruct import to use new uuid */ - obd_str2uuid(&uuid, new_uuid); - rc = import_set_conn_priority(imp, &uuid); - if (rc) - goto out; - } - - /* Check if reconnect is already in progress */ - spin_lock(&imp->imp_lock); - if (imp->imp_state != LUSTRE_IMP_DISCON) { - imp->imp_force_verify = 1; - rc = -EALREADY; - } - spin_unlock(&imp->imp_lock); - if (rc) - goto out; - - rc = ptlrpc_connect_import(imp); - if (rc) - goto out; - - if (!async) { - CDEBUG(D_HA, "%s: recovery started, waiting %u seconds\n", - obd2cli_tgt(imp->imp_obd), obd_timeout); - - rc = wait_event_idle_timeout(imp->imp_recovery_waitq, - !ptlrpc_import_in_recovery(imp), - obd_timeout * HZ); - CDEBUG(D_HA, "%s: recovery finished\n", - obd2cli_tgt(imp->imp_obd)); - rc = rc ? 0 : -ETIMEDOUT; - } - -out: - return rc; -} -EXPORT_SYMBOL(ptlrpc_recover_import); - -int ptlrpc_import_in_recovery(struct obd_import *imp) -{ - int in_recovery = 1; - - spin_lock(&imp->imp_lock); - if (imp->imp_state == LUSTRE_IMP_FULL || - imp->imp_state == LUSTRE_IMP_CLOSED || - imp->imp_state == LUSTRE_IMP_DISCON || - imp->imp_obd->obd_no_recov) - in_recovery = 0; - spin_unlock(&imp->imp_lock); - - return in_recovery; -} |