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Diffstat (limited to 'fs/ocfs2/cluster/tcp.c')
-rw-r--r--fs/ocfs2/cluster/tcp.c164
1 files changed, 123 insertions, 41 deletions
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index b8057c51b205..1e44ad14881a 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -142,23 +142,65 @@ static void o2net_idle_timer(unsigned long data);
static void o2net_sc_postpone_idle(struct o2net_sock_container *sc);
static void o2net_sc_reset_idle_timer(struct o2net_sock_container *sc);
-/*
- * FIXME: These should use to_o2nm_cluster_from_node(), but we end up
- * losing our parent link to the cluster during shutdown. This can be
- * solved by adding a pre-removal callback to configfs, or passing
- * around the cluster with the node. -jeffm
- */
-static inline int o2net_reconnect_delay(struct o2nm_node *node)
+static void o2net_init_nst(struct o2net_send_tracking *nst, u32 msgtype,
+ u32 msgkey, struct task_struct *task, u8 node)
+{
+#ifdef CONFIG_DEBUG_FS
+ INIT_LIST_HEAD(&nst->st_net_debug_item);
+ nst->st_task = task;
+ nst->st_msg_type = msgtype;
+ nst->st_msg_key = msgkey;
+ nst->st_node = node;
+#endif
+}
+
+static void o2net_set_nst_sock_time(struct o2net_send_tracking *nst)
+{
+#ifdef CONFIG_DEBUG_FS
+ do_gettimeofday(&nst->st_sock_time);
+#endif
+}
+
+static void o2net_set_nst_send_time(struct o2net_send_tracking *nst)
+{
+#ifdef CONFIG_DEBUG_FS
+ do_gettimeofday(&nst->st_send_time);
+#endif
+}
+
+static void o2net_set_nst_status_time(struct o2net_send_tracking *nst)
+{
+#ifdef CONFIG_DEBUG_FS
+ do_gettimeofday(&nst->st_status_time);
+#endif
+}
+
+static void o2net_set_nst_sock_container(struct o2net_send_tracking *nst,
+ struct o2net_sock_container *sc)
+{
+#ifdef CONFIG_DEBUG_FS
+ nst->st_sc = sc;
+#endif
+}
+
+static void o2net_set_nst_msg_id(struct o2net_send_tracking *nst, u32 msg_id)
+{
+#ifdef CONFIG_DEBUG_FS
+ nst->st_id = msg_id;
+#endif
+}
+
+static inline int o2net_reconnect_delay(void)
{
return o2nm_single_cluster->cl_reconnect_delay_ms;
}
-static inline int o2net_keepalive_delay(struct o2nm_node *node)
+static inline int o2net_keepalive_delay(void)
{
return o2nm_single_cluster->cl_keepalive_delay_ms;
}
-static inline int o2net_idle_timeout(struct o2nm_node *node)
+static inline int o2net_idle_timeout(void)
{
return o2nm_single_cluster->cl_idle_timeout_ms;
}
@@ -296,6 +338,7 @@ static void sc_kref_release(struct kref *kref)
o2nm_node_put(sc->sc_node);
sc->sc_node = NULL;
+ o2net_debug_del_sc(sc);
kfree(sc);
}
@@ -336,6 +379,7 @@ static struct o2net_sock_container *sc_alloc(struct o2nm_node *node)
ret = sc;
sc->sc_page = page;
+ o2net_debug_add_sc(sc);
sc = NULL;
page = NULL;
@@ -399,8 +443,6 @@ static void o2net_set_nn_state(struct o2net_node *nn,
mlog_bug_on_msg(err && valid, "err %d valid %u\n", err, valid);
mlog_bug_on_msg(valid && !sc, "valid %u sc %p\n", valid, sc);
- /* we won't reconnect after our valid conn goes away for
- * this hb iteration.. here so it shows up in the logs */
if (was_valid && !valid && err == 0)
err = -ENOTCONN;
@@ -430,11 +472,6 @@ static void o2net_set_nn_state(struct o2net_node *nn,
if (!was_valid && valid) {
o2quo_conn_up(o2net_num_from_nn(nn));
- /* this is a bit of a hack. we only try reconnecting
- * when heartbeating starts until we get a connection.
- * if that connection then dies we don't try reconnecting.
- * the only way to start connecting again is to down
- * heartbeat and bring it back up. */
cancel_delayed_work(&nn->nn_connect_expired);
printk(KERN_INFO "o2net: %s " SC_NODEF_FMT "\n",
o2nm_this_node() > sc->sc_node->nd_num ?
@@ -451,12 +488,24 @@ static void o2net_set_nn_state(struct o2net_node *nn,
/* delay if we're withing a RECONNECT_DELAY of the
* last attempt */
delay = (nn->nn_last_connect_attempt +
- msecs_to_jiffies(o2net_reconnect_delay(NULL)))
+ msecs_to_jiffies(o2net_reconnect_delay()))
- jiffies;
- if (delay > msecs_to_jiffies(o2net_reconnect_delay(NULL)))
+ if (delay > msecs_to_jiffies(o2net_reconnect_delay()))
delay = 0;
mlog(ML_CONN, "queueing conn attempt in %lu jiffies\n", delay);
queue_delayed_work(o2net_wq, &nn->nn_connect_work, delay);
+
+ /*
+ * Delay the expired work after idle timeout.
+ *
+ * We might have lots of failed connection attempts that run
+ * through here but we only cancel the connect_expired work when
+ * a connection attempt succeeds. So only the first enqueue of
+ * the connect_expired work will do anything. The rest will see
+ * that it's already queued and do nothing.
+ */
+ delay += msecs_to_jiffies(o2net_idle_timeout());
+ queue_delayed_work(o2net_wq, &nn->nn_connect_expired, delay);
}
/* keep track of the nn's sc ref for the caller */
@@ -914,6 +963,9 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
struct o2net_status_wait nsw = {
.ns_node_item = LIST_HEAD_INIT(nsw.ns_node_item),
};
+ struct o2net_send_tracking nst;
+
+ o2net_init_nst(&nst, msg_type, key, current, target_node);
if (o2net_wq == NULL) {
mlog(0, "attempt to tx without o2netd running\n");
@@ -939,6 +991,10 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
goto out;
}
+ o2net_debug_add_nst(&nst);
+
+ o2net_set_nst_sock_time(&nst);
+
ret = wait_event_interruptible(nn->nn_sc_wq,
o2net_tx_can_proceed(nn, &sc, &error));
if (!ret && error)
@@ -946,6 +1002,8 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
if (ret)
goto out;
+ o2net_set_nst_sock_container(&nst, sc);
+
veclen = caller_veclen + 1;
vec = kmalloc(sizeof(struct kvec) * veclen, GFP_ATOMIC);
if (vec == NULL) {
@@ -972,6 +1030,9 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
goto out;
msg->msg_num = cpu_to_be32(nsw.ns_id);
+ o2net_set_nst_msg_id(&nst, nsw.ns_id);
+
+ o2net_set_nst_send_time(&nst);
/* finally, convert the message header to network byte-order
* and send */
@@ -986,6 +1047,7 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
}
/* wait on other node's handler */
+ o2net_set_nst_status_time(&nst);
wait_event(nsw.ns_wq, o2net_nsw_completed(nn, &nsw));
/* Note that we avoid overwriting the callers status return
@@ -998,6 +1060,7 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec,
mlog(0, "woken, returning system status %d, user status %d\n",
ret, nsw.ns_status);
out:
+ o2net_debug_del_nst(&nst); /* must be before dropping sc and node */
if (sc)
sc_put(sc);
if (vec)
@@ -1154,23 +1217,23 @@ static int o2net_check_handshake(struct o2net_sock_container *sc)
* but isn't. This can ultimately cause corruption.
*/
if (be32_to_cpu(hand->o2net_idle_timeout_ms) !=
- o2net_idle_timeout(sc->sc_node)) {
+ o2net_idle_timeout()) {
mlog(ML_NOTICE, SC_NODEF_FMT " uses a network idle timeout of "
"%u ms, but we use %u ms locally. disconnecting\n",
SC_NODEF_ARGS(sc),
be32_to_cpu(hand->o2net_idle_timeout_ms),
- o2net_idle_timeout(sc->sc_node));
+ o2net_idle_timeout());
o2net_ensure_shutdown(nn, sc, -ENOTCONN);
return -1;
}
if (be32_to_cpu(hand->o2net_keepalive_delay_ms) !=
- o2net_keepalive_delay(sc->sc_node)) {
+ o2net_keepalive_delay()) {
mlog(ML_NOTICE, SC_NODEF_FMT " uses a keepalive delay of "
"%u ms, but we use %u ms locally. disconnecting\n",
SC_NODEF_ARGS(sc),
be32_to_cpu(hand->o2net_keepalive_delay_ms),
- o2net_keepalive_delay(sc->sc_node));
+ o2net_keepalive_delay());
o2net_ensure_shutdown(nn, sc, -ENOTCONN);
return -1;
}
@@ -1193,6 +1256,7 @@ static int o2net_check_handshake(struct o2net_sock_container *sc)
* shut down already */
if (nn->nn_sc == sc) {
o2net_sc_reset_idle_timer(sc);
+ atomic_set(&nn->nn_timeout, 0);
o2net_set_nn_state(nn, sc, 1, 0);
}
spin_unlock(&nn->nn_lock);
@@ -1347,12 +1411,11 @@ static void o2net_initialize_handshake(void)
{
o2net_hand->o2hb_heartbeat_timeout_ms = cpu_to_be32(
O2HB_MAX_WRITE_TIMEOUT_MS);
- o2net_hand->o2net_idle_timeout_ms = cpu_to_be32(
- o2net_idle_timeout(NULL));
+ o2net_hand->o2net_idle_timeout_ms = cpu_to_be32(o2net_idle_timeout());
o2net_hand->o2net_keepalive_delay_ms = cpu_to_be32(
- o2net_keepalive_delay(NULL));
+ o2net_keepalive_delay());
o2net_hand->o2net_reconnect_delay_ms = cpu_to_be32(
- o2net_reconnect_delay(NULL));
+ o2net_reconnect_delay());
}
/* ------------------------------------------------------------ */
@@ -1391,14 +1454,15 @@ static void o2net_sc_send_keep_req(struct work_struct *work)
static void o2net_idle_timer(unsigned long data)
{
struct o2net_sock_container *sc = (struct o2net_sock_container *)data;
+ struct o2net_node *nn = o2net_nn_from_num(sc->sc_node->nd_num);
struct timeval now;
do_gettimeofday(&now);
printk(KERN_INFO "o2net: connection to " SC_NODEF_FMT " has been idle for %u.%u "
"seconds, shutting it down.\n", SC_NODEF_ARGS(sc),
- o2net_idle_timeout(sc->sc_node) / 1000,
- o2net_idle_timeout(sc->sc_node) % 1000);
+ o2net_idle_timeout() / 1000,
+ o2net_idle_timeout() % 1000);
mlog(ML_NOTICE, "here are some times that might help debug the "
"situation: (tmr %ld.%ld now %ld.%ld dr %ld.%ld adv "
"%ld.%ld:%ld.%ld func (%08x:%u) %ld.%ld:%ld.%ld)\n",
@@ -1413,6 +1477,12 @@ static void o2net_idle_timer(unsigned long data)
sc->sc_tv_func_start.tv_sec, (long) sc->sc_tv_func_start.tv_usec,
sc->sc_tv_func_stop.tv_sec, (long) sc->sc_tv_func_stop.tv_usec);
+ /*
+ * Initialize the nn_timeout so that the next connection attempt
+ * will continue in o2net_start_connect.
+ */
+ atomic_set(&nn->nn_timeout, 1);
+
o2net_sc_queue_work(sc, &sc->sc_shutdown_work);
}
@@ -1420,10 +1490,10 @@ static void o2net_sc_reset_idle_timer(struct o2net_sock_container *sc)
{
o2net_sc_cancel_delayed_work(sc, &sc->sc_keepalive_work);
o2net_sc_queue_delayed_work(sc, &sc->sc_keepalive_work,
- msecs_to_jiffies(o2net_keepalive_delay(sc->sc_node)));
+ msecs_to_jiffies(o2net_keepalive_delay()));
do_gettimeofday(&sc->sc_tv_timer);
mod_timer(&sc->sc_idle_timeout,
- jiffies + msecs_to_jiffies(o2net_idle_timeout(sc->sc_node)));
+ jiffies + msecs_to_jiffies(o2net_idle_timeout()));
}
static void o2net_sc_postpone_idle(struct o2net_sock_container *sc)
@@ -1447,6 +1517,7 @@ static void o2net_start_connect(struct work_struct *work)
struct socket *sock = NULL;
struct sockaddr_in myaddr = {0, }, remoteaddr = {0, };
int ret = 0, stop;
+ unsigned int timeout;
/* if we're greater we initiate tx, otherwise we accept */
if (o2nm_this_node() <= o2net_num_from_nn(nn))
@@ -1466,8 +1537,17 @@ static void o2net_start_connect(struct work_struct *work)
}
spin_lock(&nn->nn_lock);
- /* see if we already have one pending or have given up */
- stop = (nn->nn_sc || nn->nn_persistent_error);
+ /*
+ * see if we already have one pending or have given up.
+ * For nn_timeout, it is set when we close the connection
+ * because of the idle time out. So it means that we have
+ * at least connected to that node successfully once,
+ * now try to connect to it again.
+ */
+ timeout = atomic_read(&nn->nn_timeout);
+ stop = (nn->nn_sc ||
+ (nn->nn_persistent_error &&
+ (nn->nn_persistent_error != -ENOTCONN || timeout == 0)));
spin_unlock(&nn->nn_lock);
if (stop)
goto out;
@@ -1555,8 +1635,8 @@ static void o2net_connect_expired(struct work_struct *work)
mlog(ML_ERROR, "no connection established with node %u after "
"%u.%u seconds, giving up and returning errors.\n",
o2net_num_from_nn(nn),
- o2net_idle_timeout(NULL) / 1000,
- o2net_idle_timeout(NULL) % 1000);
+ o2net_idle_timeout() / 1000,
+ o2net_idle_timeout() % 1000);
o2net_set_nn_state(nn, NULL, 0, -ENOTCONN);
}
@@ -1579,6 +1659,7 @@ void o2net_disconnect_node(struct o2nm_node *node)
/* don't reconnect until it's heartbeating again */
spin_lock(&nn->nn_lock);
+ atomic_set(&nn->nn_timeout, 0);
o2net_set_nn_state(nn, NULL, 0, -ENOTCONN);
spin_unlock(&nn->nn_lock);
@@ -1610,20 +1691,15 @@ static void o2net_hb_node_up_cb(struct o2nm_node *node, int node_num,
/* ensure an immediate connect attempt */
nn->nn_last_connect_attempt = jiffies -
- (msecs_to_jiffies(o2net_reconnect_delay(node)) + 1);
+ (msecs_to_jiffies(o2net_reconnect_delay()) + 1);
if (node_num != o2nm_this_node()) {
- /* heartbeat doesn't work unless a local node number is
- * configured and doing so brings up the o2net_wq, so we can
- * use it.. */
- queue_delayed_work(o2net_wq, &nn->nn_connect_expired,
- msecs_to_jiffies(o2net_idle_timeout(node)));
-
/* believe it or not, accept and node hearbeating testing
* can succeed for this node before we got here.. so
* only use set_nn_state to clear the persistent error
* if that hasn't already happened */
spin_lock(&nn->nn_lock);
+ atomic_set(&nn->nn_timeout, 0);
if (nn->nn_persistent_error)
o2net_set_nn_state(nn, NULL, 0, 0);
spin_unlock(&nn->nn_lock);
@@ -1747,6 +1823,7 @@ static int o2net_accept_one(struct socket *sock)
new_sock = NULL;
spin_lock(&nn->nn_lock);
+ atomic_set(&nn->nn_timeout, 0);
o2net_set_nn_state(nn, sc, 0, 0);
spin_unlock(&nn->nn_lock);
@@ -1922,6 +1999,9 @@ int o2net_init(void)
o2quo_init();
+ if (o2net_debugfs_init())
+ return -ENOMEM;
+
o2net_hand = kzalloc(sizeof(struct o2net_handshake), GFP_KERNEL);
o2net_keep_req = kzalloc(sizeof(struct o2net_msg), GFP_KERNEL);
o2net_keep_resp = kzalloc(sizeof(struct o2net_msg), GFP_KERNEL);
@@ -1941,6 +2021,7 @@ int o2net_init(void)
for (i = 0; i < ARRAY_SIZE(o2net_nodes); i++) {
struct o2net_node *nn = o2net_nn_from_num(i);
+ atomic_set(&nn->nn_timeout, 0);
spin_lock_init(&nn->nn_lock);
INIT_DELAYED_WORK(&nn->nn_connect_work, o2net_start_connect);
INIT_DELAYED_WORK(&nn->nn_connect_expired,
@@ -1962,4 +2043,5 @@ void o2net_exit(void)
kfree(o2net_hand);
kfree(o2net_keep_req);
kfree(o2net_keep_resp);
+ o2net_debugfs_exit();
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 07:01:53 +0100