*/
#define DEBUG_SUBSYSTEM S_RPC
-#ifdef __KERNEL__
-# include <linux/config.h>
-# include <linux/module.h>
-# include <linux/kmod.h>
-#else
+#ifndef __KERNEL__
# include <liblustre.h>
#endif
#include <linux/lustre_export.h>
#include <linux/obd.h>
#include <linux/obd_class.h>
+#include <linux/lustre_sec.h>
#include "ptlrpc_internal.h"
-/* should this take an imp_sem to ensure connect is single threaded? */
-int ptlrpc_connect_import(struct obd_import *imp)
+struct ptlrpc_connect_async_args {
+ __u64 pcaa_peer_committed;
+ int pcaa_initial_connect;
+};
+
+/* A CLOSED import should remain so. */
+#define IMPORT_SET_STATE_NOLOCK(imp, state) \
+do { \
+ if (imp->imp_state != LUSTRE_IMP_CLOSED) { \
+ CDEBUG(D_HA, "%p %s: changing import state from %s to %s\n", \
+ imp, imp->imp_target_uuid.uuid, \
+ ptlrpc_import_state_name(imp->imp_state), \
+ ptlrpc_import_state_name(state)); \
+ imp->imp_state = state; \
+ } \
+} while(0)
+
+#define IMPORT_SET_STATE(imp, state) \
+do { \
+ unsigned long flags; \
+ \
+ spin_lock_irqsave(&imp->imp_lock, flags); \
+ IMPORT_SET_STATE_NOLOCK(imp, state); \
+ spin_unlock_irqrestore(&imp->imp_lock, flags); \
+} while(0)
+
+
+static int ptlrpc_connect_interpret(struct ptlrpc_request *request,
+ void * data, int rc);
+int ptlrpc_import_recovery_state_machine(struct obd_import *imp);
+
+/* Only this function is allowed to change the import state when it is
+ * CLOSED. I would rather refcount the import and free it after
+ * disconnection like we do with exports. To do that, the client_obd
+ * will need to save the peer info somewhere other than in the import,
+ * though. */
+int ptlrpc_init_import(struct obd_import *imp)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&imp->imp_lock, flags);
+
+ imp->imp_generation++;
+ imp->imp_state = LUSTRE_IMP_NEW;
+
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+
+ return 0;
+}
+
+/* Returns true if import was FULL, false if import was already not
+ * connected.
+ */
+int ptlrpc_set_import_discon(struct obd_import *imp)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&imp->imp_lock, flags);
+
+ if (imp->imp_state == LUSTRE_IMP_FULL) {
+ CWARN("%s: connection lost to %s@%s\n",
+ imp->imp_obd->obd_name,
+ imp->imp_target_uuid.uuid,
+ imp->imp_connection->c_remote_uuid.uuid);
+ ptlrpc_deactivate_timeouts();
+ IMPORT_SET_STATE_NOLOCK(imp, LUSTRE_IMP_DISCON);
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+ obd_import_event(imp->imp_obd, imp, IMP_EVENT_DISCON);
+ rc = 1;
+ } else {
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+ CDEBUG(D_HA, "%p %s: import already not connected: %s\n",
+ imp,imp->imp_client->cli_name,
+ ptlrpc_import_state_name(imp->imp_state));
+ }
+
+ return rc;
+}
+
+/*
+ * This acts as a barrier; all existing requests are rejected, and
+ * no new requests will be accepted until the import is valid again.
+ */
+void ptlrpc_deactivate_import(struct obd_import *imp)
+{
+ unsigned long flags;
+ ENTRY;
+
+ spin_lock_irqsave(&imp->imp_lock, flags);
+ CDEBUG(D_HA, "setting import %s INVALID\n",
+ imp->imp_target_uuid.uuid);
+ imp->imp_invalid = 1;
+ imp->imp_generation++;
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+
+ ptlrpc_abort_inflight(imp);
+ obd_import_event(imp->imp_obd, imp, IMP_EVENT_INACTIVE);
+}
+
+/*
+ * This function will invalidate the import, if necessary, then block
+ * for all the RPC completions, and finally notify the obd to
+ * invalidate its state (ie cancel locks, clear pending requests,
+ * etc).
+ *
+ * in_rpc: true if this is called while processing an rpc, like
+ * CONNECT. It will allow for one RPC to be inflight while
+ * waiting for requests to complete. Ugly, yes, but I don't see an
+ * cleaner way right now.
+ */
+void ptlrpc_invalidate_import(struct obd_import *imp, int in_rpc)
+{
+ struct l_wait_info lwi;
+ unsigned long timeout;
+ int inflight = 0;
+ int rc;
+
+ if (!imp->imp_invalid)
+ ptlrpc_deactivate_import(imp);
+
+ LASSERT(imp->imp_invalid);
+
+ if (in_rpc)
+ inflight = 1;
+
+ /* wait for all requests to error out and call completion
+ callbacks */
+ if (imp->imp_server_timeout)
+ timeout = obd_timeout / 2;
+ else
+ timeout = obd_timeout;
+ timeout = MAX(timeout * HZ, 1);
+ lwi = LWI_TIMEOUT_INTR(timeout, NULL, NULL, NULL);
+ rc = l_wait_event(imp->imp_recovery_waitq,
+ (atomic_read(&imp->imp_inflight) == inflight),
+ &lwi);
+
+ if (rc)
+ CERROR("%s: rc = %d waiting for callback (%d != %d)\n",
+ imp->imp_target_uuid.uuid, rc,
+ atomic_read(&imp->imp_inflight), !!in_rpc);
+
+ obd_import_event(imp->imp_obd, imp, IMP_EVENT_INVALIDATE);
+}
+
+void ptlrpc_activate_import(struct obd_import *imp)
+{
+ struct obd_device *obd = imp->imp_obd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&imp->imp_lock, flags);
+ imp->imp_invalid = 0;
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+
+ obd_import_event(obd, imp, IMP_EVENT_ACTIVE);
+ ptlrpc_activate_timeouts();
+}
+
+void ptlrpc_fail_import(struct obd_import *imp, int generation)
+{
+ ENTRY;
+
+ LASSERT (!imp->imp_dlm_fake);
+
+ if (ptlrpc_set_import_discon(imp)) {
+ unsigned long flags;
+
+ if (!imp->imp_replayable) {
+ CDEBUG(D_HA, "import %s@%s for %s not replayable, "
+ "auto-deactivating\n",
+ imp->imp_target_uuid.uuid,
+ imp->imp_connection->c_remote_uuid.uuid,
+ imp->imp_obd->obd_name);
+ ptlrpc_deactivate_import(imp);
+ }
+
+ CDEBUG(D_HA, "%s: waking up pinger\n",
+ imp->imp_target_uuid.uuid);
+
+ spin_lock_irqsave(&imp->imp_lock, flags);
+ imp->imp_force_verify = 1;
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+
+ ptlrpc_pinger_wake_up();
+ }
+ EXIT;
+}
+
+#define ATTEMPT_TOO_SOON(last) \
+ ((last) && ((long)(jiffies - (last)) <= (long)(obd_timeout * 2 * HZ)))
+
+static int import_select_connection(struct obd_import *imp)
+{
+ struct obd_import_conn *imp_conn, *tmp;
+ struct obd_export *dlmexp;
+ int found = 0;
+ ENTRY;
+
+ spin_lock(&imp->imp_lock);
+
+ if (list_empty(&imp->imp_conn_list)) {
+ CERROR("no available connections on imp %p@%s\n",
+ imp, imp->imp_obd->obd_name);
+ spin_unlock(&imp->imp_lock);
+ RETURN(-EINVAL);
+ }
+
+ list_for_each_entry(imp_conn, &imp->imp_conn_list, oic_item) {
+ if (!ATTEMPT_TOO_SOON(imp_conn->oic_last_attempt)) {
+ found = 1;
+ break;
+ }
+ }
+
+ /* if not found, simply choose the current one */
+ if (!found) {
+ CWARN("obd %s imp 0x%p: all connections have been "
+ "tried recently\n", imp->imp_obd->obd_name, imp);
+ LASSERT(imp->imp_conn_current);
+ imp_conn = imp->imp_conn_current;
+ }
+ LASSERT(imp_conn->oic_conn);
+
+ imp_conn->oic_last_attempt = jiffies;
+
+ /* move the items ahead of the selected one to list tail */
+ while (1) {
+ tmp= list_entry(imp->imp_conn_list.next,
+ struct obd_import_conn, oic_item);
+ if (tmp == imp_conn)
+ break;
+ list_del(&tmp->oic_item);
+ list_add_tail(&tmp->oic_item, &imp->imp_conn_list);
+ }
+
+ /* switch connection if we chose a new one */
+ if (imp->imp_connection != imp_conn->oic_conn) {
+ if (imp->imp_connection) {
+ ptlrpcs_sec_invalidate_cache(imp->imp_sec);
+ ptlrpc_put_connection(imp->imp_connection);
+ }
+ imp->imp_connection =
+ ptlrpc_connection_addref(imp_conn->oic_conn);
+ }
+
+ dlmexp = class_conn2export(&imp->imp_dlm_handle);
+ LASSERT(dlmexp != NULL);
+ if (dlmexp->exp_connection)
+ ptlrpc_put_connection(imp->imp_connection);
+ dlmexp->exp_connection = ptlrpc_connection_addref(imp_conn->oic_conn);
+ class_export_put(dlmexp);
+
+ imp->imp_conn_current = imp_conn;
+ CWARN("obd %s imp 0x%p: select conn %s\n",
+ imp->imp_obd->obd_name, imp,
+ imp_conn->oic_uuid.uuid);
+ spin_unlock(&imp->imp_lock);
+
+ RETURN(0);
+}
+
+
+
+int ptlrpc_connect_import(struct obd_import *imp, char * new_uuid)
{
struct obd_device *obd = imp->imp_obd;
- int msg_flags;
int initial_connect = 0;
int rc;
__u64 committed_before_reconnect = 0;
struct ptlrpc_request *request;
- struct lustre_handle old_hdl;
- int size[] = {sizeof(imp->imp_target_uuid),
- sizeof(obd->obd_uuid),
- sizeof(imp->imp_dlm_handle)};
- char *tmp[] = {imp->imp_target_uuid.uuid,
+ int size[] = {0,
+ sizeof(imp->imp_target_uuid),
+ sizeof(obd->obd_uuid),
+ sizeof(imp->imp_dlm_handle),
+ sizeof(imp->imp_connect_flags),
+ sizeof(imp->imp_connect_data)};
+ char *tmp[] = {NULL,
+ imp->imp_target_uuid.uuid,
obd->obd_uuid.uuid,
- (char *)&imp->imp_dlm_handle};
+ (char *)&imp->imp_dlm_handle,
+ (char *)&imp->imp_connect_flags, /* XXX: make this portable! */
+ (char*) &imp->imp_connect_data};
+ int repsize = sizeof(struct obd_connect_data);
+
+ struct ptlrpc_connect_async_args *aa;
unsigned long flags;
spin_lock_irqsave(&imp->imp_lock, flags);
- if (imp->imp_state == LUSTRE_IMP_CONNECTING) {
+ if (imp->imp_state == LUSTRE_IMP_CLOSED) {
spin_unlock_irqrestore(&imp->imp_lock, flags);
+ CERROR("can't connect to a closed import\n");
+ RETURN(-EINVAL);
+ } else if (imp->imp_state == LUSTRE_IMP_FULL) {
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+ CERROR("already connected\n");
+ RETURN(0);
+ } else if (imp->imp_state == LUSTRE_IMP_CONNECTING) {
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+ CERROR("already connecting\n");
RETURN(-EALREADY);
- } else {
- LASSERT(imp->imp_state == LUSTRE_IMP_DISCON);
}
- CDEBUG(D_HA, "%s: new state: CONNECTING\n",
- imp->imp_client->cli_name);
- imp->imp_state = LUSTRE_IMP_CONNECTING;
- imp->imp_conn_cnt++;
+
+ IMPORT_SET_STATE_NOLOCK(imp, LUSTRE_IMP_CONNECTING);
+
+ imp->imp_resend_replay = 0;
+
if (imp->imp_remote_handle.cookie == 0) {
initial_connect = 1;
} else {
- committed_before_reconnect = imp->imp_peer_committed_transno;
+ committed_before_reconnect = imp->imp_peer_committed_transno;;
+ imp->imp_conn_cnt++;
}
+
+
spin_unlock_irqrestore(&imp->imp_lock, flags);
- request = ptlrpc_prep_req(imp, imp->imp_connect_op, 3, size, tmp);
+ if (new_uuid) {
+ struct obd_uuid uuid;
+
+ obd_str2uuid(&uuid, new_uuid);
+
+ rc = import_set_conn_priority(imp, &uuid);
+ if (rc)
+ GOTO(out, rc);
+ }
+ rc = import_select_connection(imp);
+ if (rc)
+ GOTO(out, rc);
+
+ LASSERT(imp->imp_sec);
+
+ size[0] = lustre_secdesc_size();
+ request = ptlrpc_prep_req(imp, LUSTRE_OBD_VERSION,
+ imp->imp_connect_op, 6, size, tmp);
if (!request)
GOTO(out, rc = -ENOMEM);
+ lustre_pack_secdesc(request, size[0]);
+
+#ifndef __KERNEL__
+ lustre_msg_add_op_flags(request->rq_reqmsg, MSG_CONNECT_LIBCLIENT);
+#endif
+ if (obd->u.cli.cl_async) {
+ lustre_msg_add_op_flags(request->rq_reqmsg, MSG_CONNECT_ASYNC);
+ }
+
request->rq_send_state = LUSTRE_IMP_CONNECTING;
- request->rq_replen = lustre_msg_size(0, NULL);
+ request->rq_replen = lustre_msg_size(1, &repsize);
+ request->rq_interpret_reply = ptlrpc_connect_interpret;
+
+ LASSERT (sizeof (*aa) <= sizeof (request->rq_async_args));
+ aa = (struct ptlrpc_connect_async_args *)&request->rq_async_args;
+ memset(aa, 0, sizeof *aa);
- // lustre_msg_add_op_flags(request->rq_reqmsg, MSG_CONNECT_PEER);
+ aa->pcaa_peer_committed = committed_before_reconnect;
+ aa->pcaa_initial_connect = initial_connect;
- rc = ptlrpc_queue_wait(request);
- if (rc) {
- GOTO(free_req, rc);
+ if (aa->pcaa_initial_connect) {
+ lustre_msg_add_op_flags(request->rq_reqmsg,
+ MSG_CONNECT_INITIAL);
+ imp->imp_replayable = 1;
+ }
+
+ imp->imp_reqs_replayed = imp->imp_locks_replayed = 0;
+
+ ptlrpcd_add_req(request);
+ rc = 0;
+ imp->imp_connect_start = jiffies;
+out:
+ if (rc != 0) {
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_DISCON);
}
+ RETURN(rc);
+}
+
+static int ptlrpc_connect_interpret(struct ptlrpc_request *request,
+ void *data, int rc)
+{
+ struct ptlrpc_connect_async_args *aa = data;
+ struct obd_import *imp = request->rq_import;
+ struct lustre_handle old_hdl;
+ unsigned long flags;
+ int msg_flags;
+ ENTRY;
+
+ spin_lock_irqsave(&imp->imp_lock, flags);
+ if (imp->imp_state == LUSTRE_IMP_CLOSED) {
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+ RETURN(0);
+ }
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+
+ if (rc)
+ GOTO(out, rc);
+ LASSERT(imp->imp_conn_current);
+ imp->imp_conn_current->oic_last_attempt = 0;
+/*
+ remote_flag = lustre_msg_buf(request->rq_repmsg, 0, sizeof(int));
+ LASSERT(remote_flag != NULL);
+ imp->imp_obd->u.cli.cl_remote = *remote_flag;
+*/
msg_flags = lustre_msg_get_op_flags(request->rq_repmsg);
- if (initial_connect) {
- CDEBUG(D_HA, "%s: new state: FULL\n",
- imp->imp_client->cli_name);
- if (msg_flags & MSG_CONNECT_REPLAYABLE)
- imp->imp_replayable = 1;
+ if (aa->pcaa_initial_connect) {
+ struct obd_connect_data *conn_data;
+
+ conn_data = lustre_swab_repbuf(request, 0, sizeof(*conn_data),
+ lustre_swab_connect);
+ LASSERT(conn_data);
+ imp->imp_connect_data.ocd_connect_flags =
+ conn_data->ocd_connect_flags;
+
+ if (msg_flags & MSG_CONNECT_REPLAYABLE) {
+ CDEBUG(D_HA, "connected to replayable target: %s\n",
+ imp->imp_target_uuid.uuid);
+ imp->imp_pingable = imp->imp_replayable = 1;
+ } else {
+ imp->imp_replayable = 0;
+ }
+ LASSERTF(imp->imp_conn_cnt < request->rq_repmsg->conn_cnt,
+ "imp conn_cnt %d req conn_cnt %d",
+ imp->imp_conn_cnt, request->rq_repmsg->conn_cnt);
+ imp->imp_conn_cnt = request->rq_repmsg->conn_cnt;
imp->imp_remote_handle = request->rq_repmsg->handle;
- imp->imp_state = LUSTRE_IMP_FULL;
- GOTO(free_req, rc = 0);
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_FULL);
+ ptlrpc_pinger_sending_on_import(imp);
+ GOTO(finish, rc = 0);
}
/* Determine what recovery state to move the import to. */
", failed\n", imp->imp_target_uuid.uuid,
imp->imp_connection->c_remote_uuid.uuid,
imp->imp_dlm_handle.cookie);
- GOTO(free_req, rc = -ENOTCONN);
+ GOTO(out, rc = -ENOTCONN);
}
if (memcmp(&imp->imp_remote_handle, &request->rq_repmsg->handle,
request->rq_repmsg->handle.cookie);
imp->imp_remote_handle = request->rq_repmsg->handle;
} else {
- CERROR("reconnected to %s@%s after partition\n",
- imp->imp_target_uuid.uuid,
+ CDEBUG(D_HA, "reconnected to %s@%s after partition\n",
+ imp->imp_target_uuid.uuid,
imp->imp_connection->c_remote_uuid.uuid);
}
- CDEBUG(D_HA, "%s: new state: RECOVER\n",
- imp->imp_client->cli_name);
- imp->imp_state = LUSTRE_IMP_RECOVER;
- }
- else if (MSG_CONNECT_RECOVERING & msg_flags) {
- CDEBUG(D_HA, "%s: new state: REPLAY\n",
- imp->imp_client->cli_name);
+
+ if (imp->imp_invalid) {
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_EVICTED);
+ } else if (MSG_CONNECT_RECOVERING & msg_flags) {
+ CDEBUG(D_HA, "%s: reconnected to %s during replay\n",
+ imp->imp_obd->obd_name,
+ imp->imp_target_uuid.uuid);
+ imp->imp_resend_replay = 1;
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_REPLAY);
+ } else {
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_RECOVER);
+ }
+ } else if ((MSG_CONNECT_RECOVERING & msg_flags) && !imp->imp_invalid) {
LASSERT(imp->imp_replayable);
- imp->imp_state = LUSTRE_IMP_RECOVER;
imp->imp_remote_handle = request->rq_repmsg->handle;
- imp->imp_state = LUSTRE_IMP_REPLAY;
- }
- else {
- CDEBUG(D_HA, "%s: new state: EVICTED\n",
- imp->imp_client->cli_name);
+ imp->imp_last_replay_transno = 0;
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_REPLAY);
+ } else {
+ CDEBUG(D_HA, "oops! we get evicted from %s\n", imp->imp_target_uuid.uuid);
imp->imp_remote_handle = request->rq_repmsg->handle;
- imp->imp_state = LUSTRE_IMP_EVICTED;
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_EVICTED);
}
-
+
/* Sanity checks for a reconnected import. */
- if (!(imp->imp_replayable) !=
- !(msg_flags & MSG_CONNECT_REPLAYABLE)) {
+ if (!(imp->imp_replayable) != !(msg_flags & MSG_CONNECT_REPLAYABLE)) {
CERROR("imp_replayable flag does not match server "
"after reconnect. We should LBUG right here.\n");
}
- if (request->rq_repmsg->last_committed < committed_before_reconnect) {
+ if (request->rq_repmsg->last_committed < aa->pcaa_peer_committed) {
CERROR("%s went back in time (transno "LPD64
" was previously committed, server now claims "LPD64
")! is shared storage not coherent?\n",
imp->imp_target_uuid.uuid,
- committed_before_reconnect,
+ aa->pcaa_peer_committed,
request->rq_repmsg->last_committed);
}
- free_req:
- ptlrpc_req_finished(request);
-
+finish:
+ rc = ptlrpc_import_recovery_state_machine(imp);
+ if (rc != 0) {
+ if (rc == -ENOTCONN) {
+ CDEBUG(D_HA, "evicted/aborted by %s@%s during recovery;"
+ "invalidating and reconnecting\n",
+ imp->imp_target_uuid.uuid,
+ imp->imp_connection->c_remote_uuid.uuid);
+ ptlrpc_connect_import(imp, NULL);
+ RETURN(0);
+ }
+ }
out:
- if (rc != 0)
- imp->imp_state = LUSTRE_IMP_DISCON;
+ if (rc != 0) {
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_DISCON);
+ if (aa->pcaa_initial_connect && !imp->imp_initial_recov)
+ ptlrpc_deactivate_import(imp);
+ CDEBUG(D_HA, "recovery of %s on %s failed (%d)\n",
+ imp->imp_target_uuid.uuid,
+ (char *)imp->imp_connection->c_remote_uuid.uuid, rc);
+ }
+
+ wake_up(&imp->imp_recovery_waitq);
RETURN(rc);
}
+static int completed_replay_interpret(struct ptlrpc_request *req,
+ void *data, int rc)
+{
+ atomic_dec(&req->rq_import->imp_replay_inflight);
+ if (req->rq_status == 0) {
+ ptlrpc_import_recovery_state_machine(req->rq_import);
+ } else {
+ CDEBUG(D_HA, "%s: LAST_REPLAY message error: %d, "
+ "reconnecting\n",
+ req->rq_import->imp_obd->obd_name, req->rq_status);
+ ptlrpc_connect_import(req->rq_import, NULL);
+ }
+
+ RETURN(0);
+}
+
+static int signal_completed_replay(struct obd_import *imp)
+ {
+ struct ptlrpc_request *req;
+ ENTRY;
+
+ LASSERT(atomic_read(&imp->imp_replay_inflight) == 0);
+ atomic_inc(&imp->imp_replay_inflight);
+
+ req = ptlrpc_prep_req(imp, LUSTRE_OBD_VERSION, OBD_PING, 0, NULL, NULL);
+ if (!req) {
+ atomic_dec(&imp->imp_replay_inflight);
+ RETURN(-ENOMEM);
+ }
+
+ req->rq_replen = lustre_msg_size(0, NULL);
+ req->rq_send_state = LUSTRE_IMP_REPLAY_WAIT;
+ req->rq_reqmsg->flags |= MSG_LOCK_REPLAY_DONE | MSG_REQ_REPLAY_DONE;
+ req->rq_timeout *= 3;
+ req->rq_interpret_reply = completed_replay_interpret;
+
+ ptlrpcd_add_req(req);
+ RETURN(0);
+}
+
+#ifdef __KERNEL__
+static int ptlrpc_invalidate_import_thread(void *data)
+{
+ struct obd_import *imp = data;
+ unsigned long flags;
+
+ ENTRY;
+
+ lock_kernel();
+ ptlrpc_daemonize();
+
+ SIGNAL_MASK_LOCK(current, flags);
+ sigfillset(¤t->blocked);
+ RECALC_SIGPENDING;
+ SIGNAL_MASK_UNLOCK(current, flags);
+ THREAD_NAME(current->comm, sizeof(current->comm), "ll_imp_inval");
+ unlock_kernel();
+
+ CDEBUG(D_HA, "thread invalidate import %s to %s@%s\n",
+ imp->imp_obd->obd_name, imp->imp_target_uuid.uuid,
+ imp->imp_connection->c_remote_uuid.uuid);
+
+ ptlrpc_invalidate_import(imp, 0);
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_RECOVER);
+
+ ptlrpc_import_recovery_state_machine(imp);
+
+ RETURN(0);
+}
+#endif
+
+int ptlrpc_import_recovery_state_machine(struct obd_import *imp)
+{
+ int rc = 0;
+ int inflight;
+
+ if (imp->imp_state == LUSTRE_IMP_EVICTED) {
+ CDEBUG(D_HA, "evicted from %s@%s; invalidating\n",
+ imp->imp_target_uuid.uuid,
+ imp->imp_connection->c_remote_uuid.uuid);
+
+#ifdef __KERNEL__
+ rc = kernel_thread(ptlrpc_invalidate_import_thread, imp,
+ CLONE_VM | CLONE_FILES);
+ if (rc < 0)
+ CERROR("error starting invalidate thread: %d\n", rc);
+ RETURN(rc);
+#else
+ ptlrpc_invalidate_import(imp, 1);
+
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_RECOVER);
+#endif
+ }
+
+ if (imp->imp_state == LUSTRE_IMP_REPLAY) {
+ CDEBUG(D_HA, "replay requested by %s\n",
+ imp->imp_target_uuid.uuid);
+ rc = ptlrpc_replay_next(imp, &inflight);
+ if (inflight == 0 &&
+ atomic_read(&imp->imp_replay_inflight) == 0) {
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_REPLAY_LOCKS);
+ rc = ldlm_replay_locks(imp);
+ if (rc)
+ GOTO(out, rc);
+ }
+ rc = 0;
+ }
+
+ if (imp->imp_state == LUSTRE_IMP_REPLAY_LOCKS) {
+ if (atomic_read(&imp->imp_replay_inflight) == 0) {
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_REPLAY_WAIT);
+ rc = signal_completed_replay(imp);
+ if (rc)
+ GOTO(out, rc);
+ }
+ }
+
+ if (imp->imp_state == LUSTRE_IMP_REPLAY_WAIT) {
+ if (atomic_read(&imp->imp_replay_inflight) == 0) {
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_RECOVER);
+ }
+ }
+
+ if (imp->imp_state == LUSTRE_IMP_RECOVER) {
+ CDEBUG(D_HA, "reconnected to %s@%s\n",
+ imp->imp_target_uuid.uuid,
+ imp->imp_connection->c_remote_uuid.uuid);
+
+ rc = ptlrpc_resend(imp);
+ if (rc)
+ GOTO(out, rc);
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_FULL);
+ ptlrpc_activate_import(imp);
+ CWARN("%s: connection restored to %s@%s, "
+ "%d/%d req/lock replayed\n",
+ imp->imp_obd->obd_name,
+ imp->imp_target_uuid.uuid,
+ imp->imp_connection->c_remote_uuid.uuid,
+ imp->imp_reqs_replayed,
+ imp->imp_locks_replayed);
+ }
+
+ if (imp->imp_state == LUSTRE_IMP_FULL) {
+ wake_up(&imp->imp_recovery_waitq);
+ ptlrpc_wake_delayed(imp);
+ }
+
+ out:
+ RETURN(rc);
+}
+
+static int back_to_sleep(void *unused)
+{
+ return 0;
+}
int ptlrpc_disconnect_import(struct obd_import *imp)
{
struct ptlrpc_request *request;
int rq_opc;
int rc = 0;
+ unsigned long flags;
ENTRY;
switch (imp->imp_connect_op) {
case OST_CONNECT: rq_opc = OST_DISCONNECT; break;
case MDS_CONNECT: rq_opc = MDS_DISCONNECT; break;
- case MGMT_CONNECT:rq_opc = MGMT_DISCONNECT;break;
+ case MGMT_CONNECT: rq_opc = MGMT_DISCONNECT; break;
default:
CERROR("don't know how to disconnect from %s (connect_op %d)\n",
imp->imp_target_uuid.uuid, imp->imp_connect_op);
RETURN(-EINVAL);
}
- request = ptlrpc_prep_req(imp, rq_opc, 0, NULL, NULL);
+
+ if (ptlrpc_import_in_recovery(imp)) {
+ struct l_wait_info lwi;
+ unsigned long timeout;
+ if (imp->imp_server_timeout)
+ timeout = obd_timeout / 2;
+ else
+ timeout = obd_timeout;
+ timeout = MAX(timeout * HZ, 1);
+ lwi = LWI_TIMEOUT_INTR(obd_timeout, back_to_sleep, NULL, NULL);
+ rc = l_wait_event(imp->imp_recovery_waitq,
+ !ptlrpc_import_in_recovery(imp), &lwi);
+
+ }
+
+ spin_lock_irqsave(&imp->imp_lock, flags);
+ if (imp->imp_state != LUSTRE_IMP_FULL) {
+ GOTO(out, 0);
+ }
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+
+ request = ptlrpc_prep_req(imp, LUSTRE_OBD_VERSION, rq_opc,
+ 0, NULL, NULL);
if (request) {
/* For non-replayable connections, don't attempt
reconnect if this fails */
- if (!imp->imp_obd->obd_replayable) {
- imp->imp_state = LUSTRE_IMP_DISCON;
- request->rq_send_state = LUSTRE_IMP_DISCON;
+ if (!imp->imp_replayable) {
+ request->rq_no_resend = 1;
+ IMPORT_SET_STATE(imp, LUSTRE_IMP_CONNECTING);
+ request->rq_send_state = LUSTRE_IMP_CONNECTING;
}
request->rq_replen = lustre_msg_size(0, NULL);
rc = ptlrpc_queue_wait(request);
ptlrpc_req_finished(request);
}
- imp->imp_state = LUSTRE_IMP_DISCON;
+ spin_lock_irqsave(&imp->imp_lock, flags);
+out:
+ IMPORT_SET_STATE_NOLOCK(imp, LUSTRE_IMP_CLOSED);
memset(&imp->imp_remote_handle, 0, sizeof(imp->imp_remote_handle));
+ imp->imp_conn_cnt = 0;
+ spin_unlock_irqrestore(&imp->imp_lock, flags);
+
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff