/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
- */
-/*
- * Copyright (c) 2011 Whamcloud, Inc.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
sptlrpc_import_sec_put(imp);
class_import_put(imp);
}
+EXPORT_SYMBOL(client_destroy_import);
/* configure an RPC client OBD device
*
ldlm_namespace_free_post(obddev->obd_namespace);
obddev->obd_namespace = NULL;
+ LASSERT(obddev->u.cli.cl_import == NULL);
+
ldlm_put_ref();
RETURN(0);
}
ptlrpc_invalidate_import(imp);
- if (imp->imp_rq_pool) {
- ptlrpc_free_rq_pool(imp->imp_rq_pool);
- imp->imp_rq_pool = NULL;
- }
- client_destroy_import(imp);
- cli->cl_import = NULL;
-
EXIT;
out_disconnect:
struct obd_uuid *cluuid)
{
ENTRY;
+
if (exp->exp_connection && exp->exp_imp_reverse) {
struct lustre_handle *hdl;
+ struct obd_device *target;
+
hdl = &exp->exp_imp_reverse->imp_remote_handle;
+ target = exp->exp_obd;
+
/* Might be a re-connect after a partition. */
if (!memcmp(&conn->cookie, &hdl->cookie, sizeof conn->cookie)) {
- CWARN("%s: %s reconnecting\n", exp->exp_obd->obd_name,
- cluuid->uuid);
+ if (target->obd_recovering)
+ LCONSOLE_WARN("%s: Client %s (at %s) reconnect"
+ "ing, waiting for %d clients in "
+ "recovery for %lds\n", target->obd_name,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp),
+ target->obd_max_recoverable_clients,
+ cfs_duration_sec(cfs_time_sub(
+ cfs_timer_deadline(
+ &target->obd_recovery_timer),
+ cfs_time_current())));
+ else
+ LCONSOLE_WARN("%s: Client %s (at %s) "
+ "reconnecting\n", target->obd_name,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp));
+
conn->cookie = exp->exp_handle.h_cookie;
/* target_handle_connect() treats EALREADY and
* -EALREADY differently. EALREADY means we are
* doing a valid reconnect from the same client. */
RETURN(EALREADY);
} else {
- CERROR("%s reconnecting from %s, "
- "handle mismatch (ours "LPX64", theirs "
- LPX64")\n", cluuid->uuid,
- exp->exp_connection->c_remote_uuid.uuid,
- hdl->cookie, conn->cookie);
+ LCONSOLE_WARN("%s: The server has already connected "
+ "client %s (at %s) with handle " LPX64
+ ", rejecting a client with the same "
+ "uuid trying to reconnect with "
+ "handle " LPX64, target->obd_name,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp),
+ hdl->cookie, conn->cookie);
memset(conn, 0, sizeof *conn);
/* target_handle_connect() treats EALREADY and
* -EALREADY differently. -EALREADY is an error
struct obd_uuid remote_uuid;
char *str;
int rc = 0;
+ char *target_start;
+ int target_len;
int mds_conn = 0;
struct obd_connect_data *data, *tmpdata;
int size, tmpsize;
target = class_name2obd(str);
if (!target || target->obd_stopping || !target->obd_set_up) {
- LCONSOLE_ERROR_MSG(0x137, "UUID '%s' is not available "
- "for connect (%s)\n", str,
- !target ? "no target" :
- (target->obd_stopping ? "stopping" :
- "not set up"));
+ deuuidify(str, NULL, &target_start, &target_len);
+ LCONSOLE_ERROR_MSG(0x137, "%.*s: Not available for connect "
+ "from %s (%s)\n", target_len, target_start,
+ libcfs_nid2str(req->rq_peer.nid), !target ?
+ "no target" : (target->obd_stopping ?
+ "stopping" : "not set up"));
GOTO(out, rc = -ENODEV);
}
if (target->obd_no_conn) {
- LCONSOLE_WARN("%s: temporarily refusing client connection "
+ LCONSOLE_WARN("%s: Temporarily refusing client connection "
"from %s\n", target->obd_name,
libcfs_nid2str(req->rq_peer.nid));
GOTO(out, rc = -EAGAIN);
/* we've found an export in the hash */
if (export->exp_connecting) { /* bug 9635, et. al. */
- CWARN("%s: exp %p already connecting\n",
- export->exp_obd->obd_name, export);
+ LCONSOLE_WARN("%s: Export %p already connecting from %s\n",
+ export->exp_obd->obd_name, export,
+ libcfs_nid2str(req->rq_peer.nid));
class_export_put(export);
export = NULL;
rc = -EALREADY;
} else if (mds_conn && export->exp_connection) {
if (req->rq_peer.nid != export->exp_connection->c_peer.nid)
/* mds reconnected after failover */
- CWARN("%s: received MDS connection from NID %s,"
- " removing former export from NID %s\n",
+ LCONSOLE_WARN("%s: Received MDS connection from "
+ "%s, removing former export from %s\n",
target->obd_name, libcfs_nid2str(req->rq_peer.nid),
libcfs_nid2str(export->exp_connection->c_peer.nid));
else
/* new mds connection from the same nid */
- CWARN("%s: received new MDS connection from NID %s,"
- " removing former export from same NID\n",
+ LCONSOLE_WARN("%s: Received new MDS connection from "
+ "%s, removing former export from same NID\n",
target->obd_name, libcfs_nid2str(req->rq_peer.nid));
class_fail_export(export);
class_export_put(export);
MSG_CONNECT_INITIAL)) {
/* in mds failover we have static uuid but nid can be
* changed*/
- CWARN("%s: cookie %s seen on new NID %s when "
- "existing NID %s is already connected\n",
- target->obd_name, cluuid.uuid,
- libcfs_nid2str(req->rq_peer.nid),
- libcfs_nid2str(export->exp_connection->c_peer.nid));
+ LCONSOLE_WARN("%s: Client %s seen on new nid %s when "
+ "existing nid %s is already connected\n",
+ target->obd_name, cluuid.uuid,
+ libcfs_nid2str(req->rq_peer.nid),
+ libcfs_nid2str(
+ export->exp_connection->c_peer.nid));
rc = -EALREADY;
class_export_put(export);
export = NULL;
cfs_spin_lock(&export->exp_lock);
export->exp_connecting = 1;
cfs_spin_unlock(&export->exp_lock);
- class_export_put(export);
LASSERT(export->exp_obd == target);
rc = target_handle_reconnect(&conn, export, &cluuid);
OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_CONNECT, 2 * obd_timeout);
} else if (req->rq_export == NULL &&
cfs_atomic_read(&export->exp_rpc_count) > 0) {
- CWARN("%s: refuse connection from %s/%s to 0x%p/%d\n",
- target->obd_name, cluuid.uuid,
- libcfs_nid2str(req->rq_peer.nid),
- export, cfs_atomic_read(&export->exp_refcount));
+ LCONSOLE_WARN("%s: Client %s (at %s) refused connection, "
+ "still busy with %d references\n",
+ target->obd_name, cluuid.uuid,
+ libcfs_nid2str(req->rq_peer.nid),
+ cfs_atomic_read(&export->exp_refcount));
GOTO(out, rc = -EBUSY);
} else if (req->rq_export != NULL &&
(cfs_atomic_read(&export->exp_rpc_count) > 1)) {
/* the current connect rpc has increased exp_rpc_count */
- CWARN("%s: refuse reconnection from %s@%s to 0x%p/%d\n",
- target->obd_name, cluuid.uuid,
- libcfs_nid2str(req->rq_peer.nid),
- export, cfs_atomic_read(&export->exp_rpc_count) - 1);
+ LCONSOLE_WARN("%s: Client %s (at %s) refused reconnection, "
+ "still busy with %d active RPCs\n",
+ target->obd_name, cluuid.uuid,
+ libcfs_nid2str(req->rq_peer.nid),
+ cfs_atomic_read(&export->exp_rpc_count) - 1);
cfs_spin_lock(&export->exp_lock);
if (req->rq_export->exp_conn_cnt <
lustre_msg_get_conn_cnt(req->rq_reqmsg))
cfs_spin_unlock(&export->exp_lock);
GOTO(out, rc = -EBUSY);
} else if (lustre_msg_get_conn_cnt(req->rq_reqmsg) == 1) {
- CERROR("%s: NID %s (%s) reconnected with 1 conn_cnt; "
- "cookies not random?\n", target->obd_name,
- libcfs_nid2str(req->rq_peer.nid), cluuid.uuid);
+ if (!strstr(cluuid.uuid, "mdt"))
+ LCONSOLE_WARN("%s: Rejecting reconnect from the "
+ "known client %s (at %s) because it "
+ "is indicating it is a new client",
+ target->obd_name, cluuid.uuid,
+ libcfs_nid2str(req->rq_peer.nid));
GOTO(out, rc = -EALREADY);
} else {
OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_RECONNECT, 2 * obd_timeout);
GOTO(out, rc);
}
- CWARN("%s: connection from %s@%s %st"LPU64" exp %p cur %ld last %ld\n",
+ CDEBUG(D_HA, "%s: connection from %s@%s %st"LPU64" exp %p cur %ld last %ld\n",
target->obd_name, cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
target->obd_recovering ? "recovering/" : "", data->ocd_transno,
export, (long)cfs_time_current_sec(),
t = cfs_timer_deadline(&target->obd_recovery_timer);
t = cfs_time_sub(t, cfs_time_current());
- CERROR("%s: denying connection for new client %s (%s): "
- "%d clients in recovery for "CFS_TIME_T"s\n",
- target->obd_name,
- libcfs_nid2str(req->rq_peer.nid), cluuid.uuid,
- cfs_atomic_read(&target-> \
- obd_lock_replay_clients),
- cfs_duration_sec(t));
+ LCONSOLE_WARN("%s: Denying connection for new client "
+ "%s (at %s), waiting for %d clients in "
+ "recovery for "CFS_TIME_T"s\n",
+ target->obd_name,
+ libcfs_nid2str(req->rq_peer.nid),
+ cluuid.uuid,
+ cfs_atomic_read(&target-> \
+ obd_lock_replay_clients),
+ cfs_duration_sec(t));
rc = -EBUSY;
} else {
dont_check_exports:
rc = obd_connect(req->rq_svc_thread->t_env,
&export, target, &cluuid, data,
client_nid);
- if (rc == 0)
+ if (rc == 0) {
conn.cookie = export->exp_handle.h_cookie;
+ /* LU-1092 reconnect put export refcount in the
+ * end, connect needs take one here too. */
+ class_export_get(export);
+ }
}
} else {
rc = obd_reconnect(req->rq_svc_thread->t_env,
cfs_spin_lock(&export->exp_lock);
if (export->exp_conn_cnt >= lustre_msg_get_conn_cnt(req->rq_reqmsg)) {
cfs_spin_unlock(&export->exp_lock);
- CERROR("%s: %s already connected at higher conn_cnt: %d > %d\n",
+ CDEBUG(D_RPCTRACE, "%s: %s already connected at higher "
+ "conn_cnt: %d > %d\n",
cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
export->exp_conn_cnt,
lustre_msg_get_conn_cnt(req->rq_reqmsg));
&export->exp_connection->c_peer.nid,
&export->exp_nid_hash);
}
-
+ /**
+ class_disconnect->class_export_recovery_cleanup() race
+ */
if (target->obd_recovering && !export->exp_in_recovery) {
int has_transno;
__u64 transno = data->ocd_transno;
cfs_spin_lock(&export->exp_lock);
export->exp_connecting = 0;
cfs_spin_unlock(&export->exp_lock);
+
+ class_export_put(export);
}
if (targref)
class_decref(targref, __FUNCTION__, cfs_current());
(obd->obd_max_recoverable_clients == 1) ? "s": "");
}
-/* extend recovery window to have extra @duration seconds at least. */
-static void extend_recovery_timer(struct obd_device *obd, int drt)
+/**
+ * extend recovery window.
+ *
+ * if @extend is true, extend recovery window to have @drt remaining at least;
+ * otherwise, make sure the recovery timeout value is not less than @drt.
+ */
+static void extend_recovery_timer(struct obd_device *obd, int drt, bool extend)
{
cfs_time_t now;
cfs_time_t end;
cfs_duration_t left;
+ int to;
cfs_spin_lock(&obd->obd_dev_lock);
if (!obd->obd_recovering || obd->obd_abort_recovery) {
cfs_spin_unlock(&obd->obd_dev_lock);
return;
}
-
LASSERT(obd->obd_recovery_start != 0);
- now = cfs_time_current_sec();
- end = obd->obd_recovery_start + obd->obd_recovery_timeout;
+ now = cfs_time_current_sec();
+ to = obd->obd_recovery_timeout;
+ end = obd->obd_recovery_start + to;
left = cfs_time_sub(end, now);
- if (left < 0) {
- obd->obd_recovery_timeout += drt - left;
- } else if (left < drt) {
- drt -= left;
- obd->obd_recovery_timeout += drt;
- } else {
- drt = left;
+
+ if (extend && (drt > left)) {
+ to += drt - left;
+ } else if (!extend && (drt > to)) {
+ to = drt;
+ /* reduce drt by already passed time */
+ drt -= obd->obd_recovery_timeout - left;
}
- cfs_timer_arm(&obd->obd_recovery_timer, cfs_time_shift(drt));
+ if (to > obd->obd_recovery_time_hard)
+ to = obd->obd_recovery_time_hard;
+ if (obd->obd_recovery_timeout < to) {
+ obd->obd_recovery_timeout = to;
+ cfs_timer_arm(&obd->obd_recovery_timer,
+ cfs_time_shift(drt));
+ }
cfs_spin_unlock(&obd->obd_dev_lock);
CDEBUG(D_HA, "%s: recovery timer will expire in %u seconds\n",
if (!(lsi->lsi_flags | LSI_IR_CAPABLE))
service_time += 2 * (CONNECTION_SWITCH_MAX +
CONNECTION_SWITCH_INC);
- service_time -= obd->obd_recovery_timeout;
- if (service_time > 0)
- extend_recovery_timer(obd, service_time);
+ if (service_time > obd->obd_recovery_timeout && !new_client)
+ extend_recovery_timer(obd, service_time, false);
}
/** Health checking routines */
* reset timer, recovery will proceed with versions now,
* timeout is set just to handle reconnection delays
*/
- extend_recovery_timer(obd, RECONNECT_DELAY_MAX);
+ extend_recovery_timer(obd, RECONNECT_DELAY_MAX, true);
/** Wait for recovery events again, after evicting bad clients */
goto repeat;
}
* Add request timeout to the recovery time so next request from
* this client may come in recovery time
*/
- if (!AT_OFF)
- to = lustre_msg_get_timeout(req->rq_reqmsg);
- extend_recovery_timer(class_exp2obd(req->rq_export), to);
+ if (!AT_OFF) {
+ struct ptlrpc_service *svc = req->rq_rqbd->rqbd_service;
+ /* If the server sent early reply for this request,
+ * the client will recalculate the timeout according to
+ * current server estimate service time, so we will
+ * use the maxium timeout here for waiting the client
+ * sending the next req */
+ to = max((int)at_est2timeout(
+ at_get(&svc->srv_at_estimate)),
+ (int)lustre_msg_get_timeout(req->rq_reqmsg));
+ /* Add net_latency (see ptlrpc_replay_req) */
+ to += lustre_msg_get_service_time(req->rq_reqmsg);
+ }
+ extend_recovery_timer(class_exp2obd(req->rq_export), to, true);
}
reqcopy_put:
RETURN(rc);
struct target_recovery_data *trd = &obd->obd_recovery_data;
unsigned long delta;
unsigned long flags;
- struct lu_env env;
- struct ptlrpc_thread fake_svc_thread, *thread = &fake_svc_thread;
+ struct lu_env *env;
+ struct ptlrpc_thread *thread = NULL;
int rc = 0;
ENTRY;
RECALC_SIGPENDING;
SIGNAL_MASK_UNLOCK(current, flags);
- rc = lu_context_init(&env.le_ctx, LCT_MD_THREAD);
- if (rc)
+ OBD_ALLOC_PTR(thread);
+ if (thread == NULL)
+ RETURN(-ENOMEM);
+
+ OBD_ALLOC_PTR(env);
+ if (env == NULL) {
+ OBD_FREE_PTR(thread);
+ RETURN(-ENOMEM);
+ }
+
+ rc = lu_context_init(&env->le_ctx, LCT_MD_THREAD);
+ if (rc) {
+ OBD_FREE_PTR(thread);
+ OBD_FREE_PTR(env);
RETURN(rc);
+ }
- thread->t_env = &env;
+ thread->t_env = env;
thread->t_id = -1; /* force filter_iobuf_get/put to use local buffers */
- env.le_ctx.lc_thread = thread;
+ env->le_ctx.lc_thread = thread;
thread->t_data = NULL;
+ thread->t_watchdog = NULL;
CDEBUG(D_HA, "%s: started recovery thread pid %d\n", obd->obd_name,
cfs_curproc_pid());
target_finish_recovery(obd);
- lu_context_fini(&env.le_ctx);
+ lu_context_fini(&env->le_ctx);
trd->trd_processing_task = 0;
cfs_complete(&trd->trd_finishing);
+
+ OBD_FREE_PTR(thread);
+ OBD_FREE_PTR(env);
RETURN(rc);
}
}
if (unlikely(rc)) {
- DEBUG_REQ(D_ERROR, req, "processing error (%d)", rc);
+ DEBUG_REQ(D_NET, req, "processing error (%d)", rc);
req->rq_status = rc;
return (ptlrpc_send_error(req, 1));
} else {
{
int netrc;
struct ptlrpc_reply_state *rs;
- struct obd_device *obd;
struct obd_export *exp;
struct ptlrpc_service *svc;
ENTRY;
LASSERT (cfs_list_empty(&rs->rs_exp_list));
exp = class_export_get (req->rq_export);
- obd = exp->exp_obd;
/* disable reply scheduling while I'm setting up */
rs->rs_scheduled = 1;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff