*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * 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, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*/
#define DEBUG_SUBSYSTEM S_RPC
-#ifdef __KERNEL__
-# include <libcfs/libcfs.h>
-#else
-# include <liblustre.h>
-#endif
-
+#include <linux/list.h>
+#include <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_ost.h>
#include <obd_class.h>
-#include <obd_lov.h> /* for IOC_LOV_SET_OSC_ACTIVE */
-#include <libcfs/list.h>
#include "ptlrpc_internal.h"
*/
int ptlrpc_replay_next(struct obd_import *imp, int *inflight)
{
- int rc = 0;
- cfs_list_t *tmp, *pos;
- struct ptlrpc_request *req = NULL;
- __u64 last_transno;
- ENTRY;
+ int rc = 0;
+ struct ptlrpc_request *req = NULL;
+ __u64 last_transno;
+ ENTRY;
- *inflight = 0;
+ *inflight = 0;
- /* It might have committed some after we last spoke, so make sure we
- * get rid of them now.
- */
+ /* 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;
- spin_unlock(&imp->imp_lock);
- CDEBUG(D_HA, "import %p from %s committed "LPU64" last "LPU64"\n",
- imp, obd2cli_tgt(imp->imp_obd),
- imp->imp_peer_committed_transno, last_transno);
-
- /* Do I need to hold a lock across this iteration? We shouldn't be
- * racing with any additions to the list, because we're in recovery
- * and are therefore not processing additional requests to add. Calls
- * to ptlrpc_free_committed might commit requests, but nothing "newer"
- * than the one we're replaying (it can't be committed until it's
- * replayed, and we're doing that here). l_f_e_safe protects against
- * problems with the current request being committed, in the unlikely
- * event of that race. So, in conclusion, I think that it's safe to
- * perform this list-walk without the imp_lock held.
- *
- * But, the {mdc,osc}_replay_open callbacks both iterate
- * request lists, and have comments saying they assume the
- * imp_lock is being held by ptlrpc_replay, but it's not. it's
- * just a little race...
- */
- cfs_list_for_each_safe(tmp, pos, &imp->imp_replay_list) {
- req = cfs_list_entry(tmp, struct ptlrpc_request,
- rq_replay_list);
-
- /* 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->rq_transno > last_transno) {
- if (imp->imp_resend_replay)
- lustre_msg_add_flags(req->rq_reqmsg,
- MSG_RESENT);
- break;
- }
- req = NULL;
- }
+ 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 == NULL) {
+ struct ptlrpc_request *tmp;
+
+ list_for_each_entry(tmp, &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 != NULL && imp->imp_resend_replay)
+ lustre_msg_add_flags(req->rq_reqmsg, MSG_RESENT);
+
+ /* ptlrpc_prepare_replay() may fail to add the reqeust into unreplied
+ * list if the request hasn't been added to replay list then. Another
+ * exception is that resend replay could have been removed from the
+ * unreplied list. */
+ if (req != NULL && list_empty(&req->rq_unreplied_list)) {
+ DEBUG_REQ(D_HA, req, "resend_replay=%d, last_transno=%llu",
+ imp->imp_resend_replay, last_transno);
+ ptlrpc_add_unreplied(req);
+ imp->imp_known_replied_xid = ptlrpc_known_replied_xid(imp);
+ }
- spin_lock(&imp->imp_lock);
imp->imp_resend_replay = 0;
spin_unlock(&imp->imp_lock);
- if (req != NULL) {
- rc = ptlrpc_replay_req(req);
- if (rc) {
- CERROR("recovery replay error %d for req "
- LPU64"\n", rc, req->rq_xid);
- RETURN(rc);
- }
- *inflight = 1;
- }
- RETURN(rc);
+ if (req != NULL) {
+ 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);
}
/**
*/
int ptlrpc_resend(struct obd_import *imp)
{
- struct ptlrpc_request *req, *next;
+ struct ptlrpc_request *req;
ENTRY;
RETURN(-1);
}
- cfs_list_for_each_entry_safe(req, next, &imp->imp_sending_list,
- rq_list) {
- LASSERTF((long)req > PAGE_CACHE_SIZE && req != LP_POISON,
- "req %p bad\n", req);
- LASSERTF(req->rq_type != LI_POISON, "req %p freed\n", req);
- if (!ptlrpc_no_resend(req))
- ptlrpc_resend_req(req);
- }
+ list_for_each_entry(req, &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);
}
-EXPORT_SYMBOL(ptlrpc_resend);
/**
* Go through all requests in delayed list and wake their threads
*/
void ptlrpc_wake_delayed(struct obd_import *imp)
{
- cfs_list_t *tmp, *pos;
struct ptlrpc_request *req;
spin_lock(&imp->imp_lock);
- cfs_list_for_each_safe(tmp, pos, &imp->imp_delayed_list) {
- req = cfs_list_entry(tmp, struct ptlrpc_request, rq_list);
-
+ list_for_each_entry(req, &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);
}
-EXPORT_SYMBOL(ptlrpc_wake_delayed);
void ptlrpc_request_handle_notconn(struct ptlrpc_request *failed_req)
{
- struct obd_import *imp = failed_req->rq_import;
- ENTRY;
+ struct obd_import *imp = failed_req->rq_import;
+ int conn = lustre_msg_get_conn_cnt(failed_req->rq_reqmsg);
+ ENTRY;
- 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);
- }
+ 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);
- /* Wait for recovery to complete and resend. If evicted, then
- this request will be errored out later.*/
+ if (ptlrpc_set_import_discon(imp, conn, true)) {
+ /* 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;
}
/**
- * Administratively active/deactive a client.
+ * Administratively active/deactive a client.
* This should only be called by the ioctl interface, currently
* - the lctl deactivate and activate commands
* - echo 0/1 >> /proc/osc/XXX/active
spin_lock(&imp->imp_lock);
if (imp->imp_state == LUSTRE_IMP_NEW || imp->imp_deactive ||
- cfs_atomic_read(&imp->imp_inval_count))
+ atomic_read(&imp->imp_inval_count))
rc = -EINVAL;
spin_unlock(&imp->imp_lock);
- if (rc)
- GOTO(out, rc);
+ if (rc)
+ GOTO(out, rc);
- /* force import to be disconnected. */
- ptlrpc_set_import_discon(imp, 0);
+ /* force import to be disconnected. */
+ ptlrpc_set_import_discon(imp, 0, false);
- if (new_uuid) {
- struct obd_uuid uuid;
+ 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, rc);
- }
+ /* intruct import to use new uuid */
+ obd_str2uuid(&uuid, new_uuid);
+ rc = import_set_conn_priority(imp, &uuid);
+ if (rc)
+ GOTO(out, rc);
+ }
- /* Check if reconnect is already in progress */
+ /* 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);
-
- rc = ptlrpc_connect_import(imp);
- if (rc)
- GOTO(out, rc);
-
- if (!async) {
- struct l_wait_info lwi;
- int secs = cfs_time_seconds(obd_timeout);
-
- CDEBUG(D_HA, "%s: recovery started, waiting %u seconds\n",
- obd2cli_tgt(imp->imp_obd), secs);
-
- lwi = LWI_TIMEOUT(secs, NULL, NULL);
- rc = l_wait_event(imp->imp_recovery_waitq,
- !ptlrpc_import_in_recovery(imp), &lwi);
- CDEBUG(D_HA, "%s: recovery finished\n",
- obd2cli_tgt(imp->imp_obd));
- }
- EXIT;
+ if (rc)
+ GOTO(out, rc);
+
+ OBD_RACE(OBD_FAIL_PTLRPC_CONNECT_RACE);
+
+ rc = ptlrpc_connect_import(imp);
+ if (rc)
+ GOTO(out, rc);
+
+ if (!async) {
+ long timeout = cfs_time_seconds(obd_timeout);
+
+ CDEBUG(D_HA, "%s: recovery started, waiting %u jiffies\n",
+ obd2cli_tgt(imp->imp_obd), obd_timeout);
+
+ rc = wait_event_idle_timeout(imp->imp_recovery_waitq,
+ !ptlrpc_import_in_recovery(imp),
+ timeout);
+ if (rc == 0)
+ rc = -ETIMEDOUT;
+ else
+ rc = 0;
+ CDEBUG(D_HA, "%s: recovery finished\n",
+ obd2cli_tgt(imp->imp_obd));
+ }
+ EXIT;
out:
- return rc;
+ 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)
+ if (imp->imp_state <= LUSTRE_IMP_DISCON ||
+ imp->imp_state >= LUSTRE_IMP_FULL ||
+ imp->imp_obd->obd_no_recov)
in_recovery = 0;
spin_unlock(&imp->imp_lock);
+
return in_recovery;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff