int rq_portal, rp_portal, connect_op;
char *name = obddev->obd_type->typ_name;
char *mgmt_name = NULL;
- int rc = 0;
+ int rc;
struct obd_device *mgmt_obd;
mgmtcli_register_for_events_t register_f;
ENTRY;
sema_init(&cli->cl_sem, 1);
cli->cl_conn_count = 0;
- memcpy(server_uuid.uuid, lcfg->lcfg_inlbuf2, MIN(lcfg->lcfg_inllen2,
- sizeof(server_uuid)));
+ memcpy(server_uuid.uuid, lcfg->lcfg_inlbuf2,
+ min_t(unsigned int, lcfg->lcfg_inllen2, sizeof(server_uuid)));
- init_MUTEX(&cli->cl_dirty_sem);
cli->cl_dirty = 0;
- cli->cl_dirty_granted = 0;
+ cli->cl_avail_grant = 0;
cli->cl_dirty_max = OSC_MAX_DIRTY_DEFAULT * 1024 * 1024;
- cli->cl_ost_can_grant = 1;
INIT_LIST_HEAD(&cli->cl_cache_waiters);
INIT_LIST_HEAD(&cli->cl_loi_ready_list);
INIT_LIST_HEAD(&cli->cl_loi_write_list);
+ INIT_LIST_HEAD(&cli->cl_loi_read_list);
spin_lock_init(&cli->cl_loi_list_lock);
cli->cl_brw_in_flight = 0;
spin_lock_init(&cli->cl_read_rpc_hist.oh_lock);
spin_lock_init(&cli->cl_write_rpc_hist.oh_lock);
spin_lock_init(&cli->cl_read_page_hist.oh_lock);
spin_lock_init(&cli->cl_write_page_hist.oh_lock);
- cli->cl_max_pages_per_rpc = PTL_MD_MAX_PAGES;
+ cli->cl_max_pages_per_rpc = PTLRPC_MAX_BRW_PAGES;
cli->cl_max_rpcs_in_flight = OSC_MAX_RIF_DEFAULT;
- ldlm_get_ref();
+ rc = ldlm_get_ref();
if (rc) {
CERROR("ldlm_get_ref failed: %d\n", rc);
GOTO(err, rc);
imp->imp_obd = obddev;
imp->imp_connect_op = connect_op;
imp->imp_generation = 0;
+ imp->imp_initial_recov = 1;
INIT_LIST_HEAD(&imp->imp_pinger_chain);
memcpy(imp->imp_target_uuid.uuid, lcfg->lcfg_inlbuf1,
lcfg->lcfg_inllen1);
GOTO(out_disco, rc = -ENOMEM);
imp->imp_dlm_handle = *dlm_handle;
- imp->imp_state = LUSTRE_IMP_DISCON;
+ rc = ptlrpc_init_import(imp);
+ if (rc != 0)
+ GOTO(out_ldlm, rc);
- rc = ptlrpc_connect_import(imp);
+ exp->exp_connection = ptlrpc_connection_addref(imp->imp_connection);
+ rc = ptlrpc_connect_import(imp, NULL);
if (rc != 0) {
LASSERT (imp->imp_state == LUSTRE_IMP_DISCON);
GOTO(out_ldlm, rc);
}
- LASSERT (imp->imp_state == LUSTRE_IMP_FULL);
-
- exp->exp_connection = ptlrpc_connection_addref(imp->imp_connection);
-
- if (imp->imp_replayable) {
- CDEBUG(D_HA, "connected to replayable target: %s\n",
- imp->imp_target_uuid.uuid);
- ptlrpc_pinger_add_import(imp);
- }
-
- CDEBUG(D_HA, "local import: %p, remote handle: "LPX64"\n", imp,
- imp->imp_remote_handle.cookie);
-
+ ptlrpc_pinger_add_import(imp);
EXIT;
if (rc) {
/* Yeah, obd_no_recov also (mainly) means "forced shutdown". */
if (obd->obd_no_recov)
- ptlrpc_set_import_active(imp, 0);
+ ptlrpc_invalidate_import(imp, 0);
else
rc = ptlrpc_disconnect_import(imp);
- imp->imp_state = LUSTRE_IMP_NEW;
-
EXIT;
out_no_disconnect:
err = class_disconnect(exp, 0);
* -------------------------------------------------------------------------- */
int target_handle_reconnect(struct lustre_handle *conn, struct obd_export *exp,
- struct obd_uuid *cluuid)
+ struct obd_uuid *cluuid, int initial_conn)
{
- if (exp->exp_connection) {
+ if (exp->exp_connection && !initial_conn) {
struct lustre_handle *hdl;
hdl = &exp->exp_imp_reverse->imp_remote_handle;
/* Might be a re-connect after a partition. */
struct list_head *p;
char *str, *tmp;
int rc = 0, abort_recovery;
+ unsigned long flags;
+ int initial_conn = 0;
+ char peer_str[PTL_NALFMT_SIZE];
ENTRY;
+ OBD_RACE(OBD_FAIL_TGT_CONN_RACE);
+
LASSERT_REQSWAB (req, 0);
str = lustre_msg_string(req->rq_reqmsg, 0, sizeof(tgtuuid) - 1);
if (str == NULL) {
if (!target) {
target = class_name2obd(str);
}
-
+
if (!target || target->obd_stopping || !target->obd_set_up) {
CERROR("UUID '%s' is not available for connect\n", str);
+
GOTO(out, rc = -ENODEV);
}
obd_str2uuid (&cluuid, str);
/* XXX extract a nettype and format accordingly */
- snprintf(remote_uuid.uuid, sizeof remote_uuid,
- "NET_"LPX64"_UUID", req->rq_peer.peer_nid);
+ switch (sizeof(ptl_nid_t)) {
+ /* NB the casts only avoid compiler warnings */
+ case 8:
+ snprintf(remote_uuid.uuid, sizeof remote_uuid,
+ "NET_"LPX64"_UUID", (__u64)req->rq_peer.peer_nid);
+ break;
+ case 4:
+ snprintf(remote_uuid.uuid, sizeof remote_uuid,
+ "NET_%x_UUID", (__u32)req->rq_peer.peer_nid);
+ break;
+ default:
+ LBUG();
+ }
spin_lock_bh(&target->obd_processing_task_lock);
abort_recovery = target->obd_abort_recovery;
rc = lustre_pack_reply(req, 0, NULL, NULL);
if (rc)
GOTO(out, rc);
-
+
+ if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_INITIAL)
+ initial_conn = 1;
+
/* lctl gets a backstage, all-access pass. */
if (obd_uuid_equals(&cluuid, &target->obd_uuid))
goto dont_check_exports;
spin_unlock(&target->obd_dev_lock);
LASSERT(export->exp_obd == target);
- rc = target_handle_reconnect(&conn, export, &cluuid);
+ rc = target_handle_reconnect(&conn, export, &cluuid,
+ initial_conn);
break;
}
export = NULL;
/* If we found an export, we already unlocked. */
if (!export) {
spin_unlock(&target->obd_dev_lock);
- } else if (req->rq_reqmsg->conn_cnt == 1) {
+ } else if (req->rq_export == NULL &&
+ atomic_read(&export->exp_rpc_count) > 0) {
+ CWARN("%s: refuse connection from %s/%s to 0x%p/%d\n",
+ target->obd_name, cluuid.uuid,
+ ptlrpc_peernid2str(&req->rq_peer, peer_str),
+ export, atomic_read(&export->exp_refcount));
+ GOTO(out, rc = -EBUSY);
+ } else if (req->rq_export != NULL &&
+ atomic_read(&export->exp_rpc_count) > 1) {
+ CWARN("%s: refuse reconnection from %s@%s to 0x%p/%d\n",
+ target->obd_name, cluuid.uuid,
+ ptlrpc_peernid2str(&req->rq_peer, peer_str),
+ export, atomic_read(&export->exp_rpc_count));
+ GOTO(out, rc = -EBUSY);
+ }
+ else if (req->rq_reqmsg->conn_cnt == 1 && !initial_conn) {
CERROR("%s reconnected with 1 conn_cnt; cookies not random?\n",
cluuid.uuid);
GOTO(out, rc = -EALREADY);
/* Tell the client if we're in recovery. */
/* If this is the first client, start the recovery timer */
+ CWARN("%s: connection from %s@%s %s\n", target->obd_name, cluuid.uuid,
+ ptlrpc_peernid2str(&req->rq_peer, peer_str),
+ target->obd_recovering ? "(recovering)" : "");
if (target->obd_recovering) {
lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
target_start_recovery_timer(target, handler);
}
-
+#if 0
/* Tell the client if we support replayable requests */
if (target->obd_replayable)
lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
-
+#endif
if (export == NULL) {
if (target->obd_recovering) {
- CERROR("denying connection for new client %s: "
+ CERROR("denying connection for new client %s@%s: "
"%d clients in recovery for %lds\n", cluuid.uuid,
+ ptlrpc_peernid2str(&req->rq_peer, peer_str),
target->obd_recoverable_clients,
(target->obd_recovery_timer.expires-jiffies)/HZ);
rc = -EBUSY;
rc = obd_connect(&conn, target, &cluuid);
}
}
+ /* Tell the client if we support replayable requests */
+ if (target->obd_replayable)
+ lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
/* If all else goes well, this is our RPC return code. */
req->rq_status = 0;
if (rc && rc != EALREADY)
GOTO(out, rc);
- /* XXX track this all the time? */
- if (target->obd_recovering) {
- target->obd_connected_clients++;
- }
-
req->rq_repmsg->handle = conn;
/* If the client and the server are the same node, we will already
export = req->rq_export = class_conn2export(&conn);
LASSERT(export != NULL);
- if (req->rq_connection != NULL)
- ptlrpc_put_connection(req->rq_connection);
+ spin_lock_irqsave(&export->exp_lock, flags);
+ if (initial_conn) {
+ req->rq_repmsg->conn_cnt = export->exp_conn_cnt + 1;
+ } else if (export->exp_conn_cnt >= req->rq_reqmsg->conn_cnt) {
+ CERROR("%s@%s: already connected at a higher conn_cnt: %d > %d\n",
+ cluuid.uuid, ptlrpc_peernid2str(&req->rq_peer, peer_str),
+ export->exp_conn_cnt,
+ req->rq_reqmsg->conn_cnt);
+ spin_unlock_irqrestore(&export->exp_lock, flags);
+ GOTO(out, rc = -EALREADY);
+ }
+ export->exp_conn_cnt = req->rq_reqmsg->conn_cnt;
+ spin_unlock_irqrestore(&export->exp_lock, flags);
+
+ /* request from liblustre? */
+ if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT)
+ export->exp_libclient = 1;
+
if (export->exp_connection != NULL)
ptlrpc_put_connection(export->exp_connection);
export->exp_connection = ptlrpc_get_connection(&req->rq_peer,
&remote_uuid);
- req->rq_connection = ptlrpc_connection_addref(export->exp_connection);
-
- LASSERT(export->exp_conn_cnt < req->rq_reqmsg->conn_cnt);
- export->exp_conn_cnt = req->rq_reqmsg->conn_cnt;
if (rc == EALREADY) {
/* We indicate the reconnection in a flag, not an error code. */
GOTO(out, rc = 0);
}
+ if (target->obd_recovering) {
+ target->obd_connected_clients++;
+ }
+
memcpy(&conn, lustre_msg_buf(req->rq_reqmsg, 2, sizeof conn),
sizeof conn);
if (export->exp_imp_reverse != NULL)
class_destroy_import(export->exp_imp_reverse);
revimp = export->exp_imp_reverse = class_new_import();
- revimp->imp_connection = ptlrpc_connection_addref(req->rq_connection);
+ revimp->imp_connection = ptlrpc_connection_addref(export->exp_connection);
revimp->imp_client = &export->exp_obd->obd_ldlm_client;
revimp->imp_remote_handle = conn;
revimp->imp_obd = target;
int target_handle_disconnect(struct ptlrpc_request *req)
{
+ struct obd_export *exp;
int rc;
ENTRY;
if (rc)
RETURN(rc);
- req->rq_status = obd_disconnect(req->rq_export, 0);
- req->rq_export = NULL;
+ /* keep the rq_export around so we can send the reply */
+ exp = class_export_get(req->rq_export);
+ req->rq_status = obd_disconnect(exp, 0);
RETURN(0);
}
/* We cancel locks at disconnect time, but this will catch any locks
* granted in a race with recovery-induced disconnect. */
- ldlm_cancel_locks_for_export(exp);
+ if (exp->exp_obd->obd_namespace != NULL)
+ ldlm_cancel_locks_for_export(exp);
}
/*
* Recovery functions
*/
-void target_cancel_recovery_timer(struct obd_device *obd)
-{
- del_timer(&obd->obd_recovery_timer);
-}
-
static void abort_delayed_replies(struct obd_device *obd)
{
struct ptlrpc_request *req;
req->rq_status = -ENOTCONN;
req->rq_type = PTL_RPC_MSG_ERR;
ptlrpc_reply(req);
+ class_export_put(req->rq_export);
list_del(&req->rq_list);
OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
OBD_FREE(req, sizeof *req);
class_disconnect_exports(obd, 0);
- /* when recovery was abort, cleanup orphans for mds */
+ /* when recovery was aborted, cleanup orphans on mds and ost */
if (OBT(obd) && OBP(obd, postrecov)) {
rc = OBP(obd, postrecov)(obd);
if (rc >= 0)
spin_unlock_bh(&obd->obd_processing_task_lock);
}
-static void reset_recovery_timer(struct obd_device *obd)
+
+/* obd_processing_task_lock should be held */
+void target_cancel_recovery_timer(struct obd_device *obd)
{
- int recovering;
- spin_lock(&obd->obd_dev_lock);
- recovering = obd->obd_recovering;
- spin_unlock(&obd->obd_dev_lock);
+ CDEBUG(D_HA, "%s: cancel recovery timer\n", obd->obd_name);
+ del_timer(&obd->obd_recovery_timer);
+}
- if (!recovering)
+static void reset_recovery_timer(struct obd_device *obd)
+{
+ spin_lock_bh(&obd->obd_processing_task_lock);
+ if (!obd->obd_recovering) {
+ spin_unlock_bh(&obd->obd_processing_task_lock);
return;
+ }
CDEBUG(D_HA, "timer will expire in %u seconds\n",
OBD_RECOVERY_TIMEOUT / HZ);
mod_timer(&obd->obd_recovery_timer, jiffies + OBD_RECOVERY_TIMEOUT);
+ spin_unlock_bh(&obd->obd_processing_task_lock);
}
obd->obd_recovery_handler = handler;
obd->obd_recovery_timer.function = target_recovery_expired;
obd->obd_recovery_timer.data = (unsigned long)obd;
- init_timer(&obd->obd_recovery_timer);
spin_unlock_bh(&obd->obd_processing_task_lock);
reset_recovery_timer(obd);
queue_len = obd->obd_requests_queued_for_recovery;
next_transno = obd->obd_next_recovery_transno;
+ CDEBUG(D_HA,"max: %d, connected: %d, completed: %d, queue_len: %d, "
+ "req_transno: "LPU64", next_transno: "LPU64"\n",
+ max, connected, completed, queue_len, req_transno, next_transno);
if (obd->obd_abort_recovery) {
CDEBUG(D_HA, "waking for aborted recovery\n");
wake_up = 1;
* Also, if this request has a transno less than the one we're waiting
* for, we should process it now. It could (and currently always will)
* be an open request for a descriptor that was opened some time ago.
+ *
+ * Also, a resent, replayed request that has already been
+ * handled will pass through here and be processed immediately.
*/
if (obd->obd_processing_task == current->pid ||
transno < obd->obd_next_recovery_transno) {
/* Processing the queue right now, don't re-add. */
+ lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
LASSERT(list_empty(&req->rq_list));
spin_unlock_bh(&obd->obd_processing_task_lock);
OBD_FREE(reqmsg, req->rq_reqlen);
return 1;
}
+ /* A resent, replayed request that is still on the queue; just drop it.
+ The queued request will handle this. */
+ if ((lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) ==
+ (MSG_RESENT | MSG_REPLAY)) {
+ DEBUG_REQ(D_ERROR, req, "dropping resent queued req");
+ spin_unlock_bh(&obd->obd_processing_task_lock);
+ OBD_FREE(reqmsg, req->rq_reqlen);
+ OBD_FREE(saved_req, sizeof *saved_req);
+ return 0;
+ }
+
memcpy(saved_req, req, sizeof *req);
memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
req = saved_req;
int recovery_done = 0;
int rc2;
+ LASSERT ((rc == 0) == (req->rq_reply_state != NULL));
+
if (rc) {
/* Just like ptlrpc_error, but without the sending. */
rc = lustre_pack_reply(req, 0, NULL, NULL);
req->rq_type = PTL_RPC_MSG_ERR;
}
+ LASSERT (!req->rq_reply_state->rs_difficult);
LASSERT(list_empty(&req->rq_list));
/* XXX a bit like the request-dup code in queue_recovery_request */
OBD_ALLOC(saved_req, sizeof *saved_req);
LBUG();
memcpy(saved_req, req, sizeof *saved_req);
memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
+ /* the copied req takes over the reply state */
+ req->rq_reply_state = NULL;
req = saved_req;
req->rq_reqmsg = reqmsg;
+ class_export_get(req->rq_export);
list_add(&req->rq_list, &obd->obd_delayed_reply_queue);
spin_lock_bh(&obd->obd_processing_task_lock);
- --obd->obd_recoverable_clients;
+ /* only count the first "replay over" request from each
+ export */
+ if (req->rq_export->exp_replay_needed) {
+ --obd->obd_recoverable_clients;
+ req->rq_export->exp_replay_needed = 0;
+ }
recovery_done = (obd->obd_recoverable_clients == 0);
spin_unlock_bh(&obd->obd_processing_task_lock);
ldlm_reprocess_all_ns(req->rq_export->exp_obd->obd_namespace);
CWARN("%s: all clients recovered, sending delayed replies\n",
obd->obd_name);
+ spin_lock_bh(&obd->obd_processing_task_lock);
obd->obd_recovering = 0;
+ target_cancel_recovery_timer(obd);
+ spin_unlock_bh(&obd->obd_processing_task_lock);
- /* when recovering finished, cleanup orphans for mds */
+ /* when recovery finished, cleanup orphans on mds and ost */
if (OBT(obd) && OBP(obd, postrecov)) {
rc2 = OBP(obd, postrecov)(obd);
if (rc2 >= 0)
- CWARN("%s: all clients recovered, %d MDS orphans "
- "deleted\n", obd->obd_name, rc2);
+ CWARN("%s: all clients recovered, %d MDS "
+ "orphans deleted\n", obd->obd_name, rc2);
else
CERROR("postrecov failed %d\n", rc2);
}
req = list_entry(tmp, struct ptlrpc_request, rq_list);
DEBUG_REQ(D_ERROR, req, "delayed:");
ptlrpc_reply(req);
+ class_export_put(req->rq_export);
list_del(&req->rq_list);
OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
OBD_FREE(req, sizeof *req);
}
- target_cancel_recovery_timer(obd);
+ ptlrpc_run_recovery_over_upcall(obd);
} else {
CWARN("%s: %d recoverable clients remain\n",
obd->obd_name, obd->obd_recoverable_clients);
return 1;
}
-static void ptlrpc_abort_reply (struct ptlrpc_request *req)
+int
+target_send_reply_msg (struct ptlrpc_request *req, int rc, int fail_id)
{
- /* On return, we must be sure that the ACK callback has either
- * happened or will not happen. Note that the SENT callback will
- * happen come what may since we successfully posted the PUT. */
- int rc;
- struct l_wait_info lwi;
- unsigned long flags;
-
- again:
- /* serialise with ACK callback */
- spin_lock_irqsave (&req->rq_lock, flags);
- if (!req->rq_want_ack) {
- spin_unlock_irqrestore (&req->rq_lock, flags);
- /* The ACK callback has happened already. Although the
- * SENT callback might still be outstanding (yes really) we
- * don't care; this is just like normal completion. */
- return;
- }
- spin_unlock_irqrestore (&req->rq_lock, flags);
-
- /* Have a bash at unlinking the MD. This will fail until the SENT
- * callback has happened since the MD is busy from the PUT. If the
- * ACK still hasn't arrived after then, a successful unlink will
- * ensure the ACK callback never happens. */
- rc = PtlMDUnlink (req->rq_reply_md_h);
- switch (rc) {
- default:
- LBUG ();
- case PTL_OK:
- /* SENT callback happened; ACK callback preempted */
- LASSERT (req->rq_want_ack);
- spin_lock_irqsave (&req->rq_lock, flags);
- req->rq_want_ack = 0;
- spin_unlock_irqrestore (&req->rq_lock, flags);
- return;
- case PTL_INV_MD:
- return;
- case PTL_MD_INUSE:
- /* Still sending or ACK callback in progress: wait until
- * either callback has completed and try again.
- * Actually we can't wait for the SENT callback because
- * there's no state the SENT callback can touch that will
- * allow it to communicate with us! So we just wait here
- * for a short time, effectively polling for the SENT
- * callback by calling PtlMDUnlink() again, to see if it
- * has finished. Note that if the ACK does arrive, its
- * callback wakes us in short order. --eeb */
- lwi = LWI_TIMEOUT (HZ/4, NULL, NULL);
- rc = l_wait_event(req->rq_reply_waitq, !req->rq_want_ack,
- &lwi);
- CDEBUG (D_HA, "Retrying req %p: %d\n", req, rc);
- /* NB go back and test rq_want_ack with locking, to ensure
- * if ACK callback happened, it has completed stopped
- * referencing this req. */
- goto again;
- }
-}
-
-void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
-{
- int i;
- int netrc;
- unsigned long flags;
- struct ptlrpc_req_ack_lock *ack_lock;
- struct l_wait_info lwi = { 0 };
- wait_queue_t commit_wait;
- struct obd_device *obd =
- req->rq_export ? req->rq_export->exp_obd : NULL;
- struct obd_export *exp = NULL;
-
- if (req->rq_export) {
- for (i = 0; i < REQ_MAX_ACK_LOCKS; i++) {
- if (req->rq_ack_locks[i].mode) {
- exp = req->rq_export;
- break;
+ if (OBD_FAIL_CHECK(fail_id | OBD_FAIL_ONCE)) {
+ obd_fail_loc |= OBD_FAIL_ONCE | OBD_FAILED;
+ DEBUG_REQ(D_ERROR, req, "dropping reply");
+ /* NB this does _not_ send with ACK disabled, to simulate
+ * sending OK, but timing out for the ACK */
+ if (req->rq_reply_state != NULL) {
+ if (!req->rq_reply_state->rs_difficult) {
+ lustre_free_reply_state (req->rq_reply_state);
+ req->rq_reply_state = NULL;
+ } else {
+ struct ptlrpc_service *svc =
+ req->rq_rqbd->rqbd_srv_ni->sni_service;
+ atomic_inc(&svc->srv_outstanding_replies);
}
}
+ return (-ECOMM);
}
- if (exp) {
- exp->exp_outstanding_reply = req;
- spin_lock_irqsave (&req->rq_lock, flags);
- req->rq_want_ack = 1;
- spin_unlock_irqrestore (&req->rq_lock, flags);
- }
-
- if (!OBD_FAIL_CHECK(fail_id | OBD_FAIL_ONCE)) {
- if (rc == 0) {
- DEBUG_REQ(D_NET, req, "sending reply");
- netrc = ptlrpc_reply(req);
- } else if (rc == -ENOTCONN) {
- DEBUG_REQ(D_HA, req, "processing error (%d)", rc);
- netrc = ptlrpc_error(req);
- } else {
- DEBUG_REQ(D_ERROR, req, "processing error (%d)", rc);
- netrc = ptlrpc_error(req);
+ if (rc) {
+ DEBUG_REQ(D_ERROR, req, "processing error (%d)", rc);
+ if (req->rq_reply_state == NULL) {
+ rc = lustre_pack_reply (req, 0, NULL, NULL);
+ if (rc != 0) {
+ CERROR ("can't allocate reply\n");
+ return (rc);
+ }
}
+ req->rq_type = PTL_RPC_MSG_ERR;
} else {
- obd_fail_loc |= OBD_FAIL_ONCE | OBD_FAILED;
- DEBUG_REQ(D_ERROR, req, "dropping reply");
- if (req->rq_repmsg) {
- OBD_FREE(req->rq_repmsg, req->rq_replen);
- req->rq_repmsg = NULL;
- }
- init_waitqueue_head(&req->rq_reply_waitq);
- netrc = 0;
+ DEBUG_REQ(D_NET, req, "sending reply");
}
+
+ return (ptlrpc_send_reply(req, 1));
+}
- /* a failed send simulates the callbacks */
- LASSERT(netrc == 0 || req->rq_want_ack == 0);
- if (exp == NULL) {
- LASSERT(req->rq_want_ack == 0);
+void
+target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
+{
+ int netrc;
+ unsigned long flags;
+ struct ptlrpc_reply_state *rs;
+ struct obd_device *obd;
+ struct obd_export *exp;
+ struct ptlrpc_srv_ni *sni;
+ struct ptlrpc_service *svc;
+
+ sni = req->rq_rqbd->rqbd_srv_ni;
+ svc = sni->sni_service;
+
+ rs = req->rq_reply_state;
+ if (rs == NULL || !rs->rs_difficult) {
+ /* The easy case; no notifiers and reply_out_callback()
+ * cleans up (i.e. we can't look inside rs after a
+ * successful send) */
+ netrc = target_send_reply_msg (req, rc, fail_id);
+
+ LASSERT (netrc == 0 || req->rq_reply_state == NULL);
return;
}
- LASSERT(obd != NULL);
-
- init_waitqueue_entry(&commit_wait, current);
- add_wait_queue(&obd->obd_commit_waitq, &commit_wait);
- rc = l_wait_event(req->rq_reply_waitq,
- !req->rq_want_ack || req->rq_resent ||
- req->rq_transno <= obd->obd_last_committed, &lwi);
- remove_wait_queue(&obd->obd_commit_waitq, &commit_wait);
-
- spin_lock_irqsave (&req->rq_lock, flags);
- /* If we got here because the ACK callback ran, this acts as a
- * barrier to ensure the callback completed the wakeup. */
- spin_unlock_irqrestore (&req->rq_lock, flags);
-
- /* If we committed the transno already, then we might wake up before
- * the ack arrives. We need to stop waiting for the ack before we can
- * reuse this request structure. We are guaranteed by this point that
- * this cannot abort the sending of the actual reply.*/
- ptlrpc_abort_reply(req);
-
- if (req->rq_resent) {
- DEBUG_REQ(D_HA, req, "resent: not cancelling locks");
- return;
+
+ /* must be an export if locks saved */
+ LASSERT (req->rq_export != NULL);
+ /* req/reply consistent */
+ LASSERT (rs->rs_srv_ni == sni);
+
+ /* "fresh" reply */
+ LASSERT (!rs->rs_scheduled);
+ LASSERT (!rs->rs_scheduled_ever);
+ LASSERT (!rs->rs_handled);
+ LASSERT (!rs->rs_on_net);
+ LASSERT (rs->rs_export == NULL);
+ LASSERT (list_empty(&rs->rs_obd_list));
+ LASSERT (list_empty(&rs->rs_exp_list));
+
+ exp = class_export_get (req->rq_export);
+ obd = exp->exp_obd;
+
+ /* disable reply scheduling onto srv_reply_queue while I'm setting up */
+ rs->rs_scheduled = 1;
+ rs->rs_on_net = 1;
+ rs->rs_xid = req->rq_xid;
+ rs->rs_transno = req->rq_transno;
+ rs->rs_export = exp;
+
+ spin_lock_irqsave (&obd->obd_uncommitted_replies_lock, flags);
+
+ if (rs->rs_transno > obd->obd_last_committed) {
+ /* not committed already */
+ list_add_tail (&rs->rs_obd_list,
+ &obd->obd_uncommitted_replies);
}
- LASSERT(rc == 0);
- DEBUG_REQ(D_HA, req, "cancelling locks for %s",
- req->rq_want_ack ? "commit" : "ack");
+ spin_unlock (&obd->obd_uncommitted_replies_lock);
+ spin_lock (&exp->exp_lock);
- exp->exp_outstanding_reply = NULL;
+ list_add_tail (&rs->rs_exp_list, &exp->exp_outstanding_replies);
- for (ack_lock = req->rq_ack_locks, i = 0;
- i < REQ_MAX_ACK_LOCKS; i++, ack_lock++) {
- if (!ack_lock->mode)
- continue;
- ldlm_lock_decref(&ack_lock->lock, ack_lock->mode);
+ spin_unlock_irqrestore (&exp->exp_lock, flags);
+
+ netrc = target_send_reply_msg (req, rc, fail_id);
+
+ spin_lock_irqsave (&svc->srv_lock, flags);
+
+ svc->srv_n_difficult_replies++;
+
+ if (netrc != 0) /* error sending: reply is off the net */
+ rs->rs_on_net = 0;
+
+ if (!rs->rs_on_net || /* some notifier */
+ list_empty(&rs->rs_exp_list) || /* completed already */
+ list_empty(&rs->rs_obd_list)) {
+ list_add_tail (&rs->rs_list, &svc->srv_reply_queue);
+ wake_up (&svc->srv_waitq);
+ } else {
+ list_add (&rs->rs_list, &sni->sni_active_replies);
+ rs->rs_scheduled = 0; /* allow notifier to schedule */
}
+
+ spin_unlock_irqrestore (&svc->srv_lock, flags);
}
int target_handle_ping(struct ptlrpc_request *req)
{
return lustre_pack_reply(req, 0, NULL, NULL);
}
-
-void *ldlm_put_lock_into_req(struct ptlrpc_request *req,
- struct lustre_handle *lock, int mode)
-{
- int i;
-
- for (i = 0; i < REQ_MAX_ACK_LOCKS; i++) {
- if (req->rq_ack_locks[i].mode)
- continue;
- memcpy(&req->rq_ack_locks[i].lock, lock, sizeof(*lock));
- req->rq_ack_locks[i].mode = mode;
- return &req->rq_ack_locks[i];
- }
- CERROR("no space for lock in struct ptlrpc_request\n");
- LBUG();
- return NULL;
-}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff