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-rw-r--r--fs/ocfs2/cluster/tcp.c51
-rw-r--r--fs/ocfs2/cluster/tcp_internal.h2
2 files changed, 38 insertions, 15 deletions
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index b8057c5..4ea4b0a 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -399,8 +399,6 @@ 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 +428,6 @@ 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 ?
@@ -457,6 +450,18 @@ static void o2net_set_nn_state(struct o2net_node *nn,
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(NULL));
+ queue_delayed_work(o2net_wq, &nn->nn_connect_expired, delay);
}
/* keep track of the nn's sc ref for the caller */
@@ -1193,6 +1198,7 @@ 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);
@@ -1391,6 +1397,7 @@ 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);
@@ -1413,6 +1420,12 @@ 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);
}
@@ -1447,6 +1460,7 @@ 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 +1480,17 @@ 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;
@@ -1579,6 +1602,7 @@ 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);
@@ -1613,17 +1637,12 @@ static void o2net_hb_node_up_cb(struct o2nm_node *node, int node_num,
(msecs_to_jiffies(o2net_reconnect_delay(node)) + 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 +1766,7 @@ 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);
@@ -1941,6 +1961,7 @@ 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,
diff --git a/fs/ocfs2/cluster/tcp_internal.h b/fs/ocfs2/cluster/tcp_internal.h
index d25b9af..b4c5586 100644
--- a/fs/ocfs2/cluster/tcp_internal.h
+++ b/fs/ocfs2/cluster/tcp_internal.h
@@ -95,6 +95,8 @@ struct o2net_node {
unsigned nn_sc_valid:1;
/* if this is set tx just returns it */
int nn_persistent_error;
+ /* It is only set to 1 after the idle time out. */
+ atomic_t nn_timeout;
/* threads waiting for an sc to arrive wait on the wq for generation
* to increase. it is increased when a connecting socket succeeds
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