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authorJunxiao Bi <junxiao.bi@oracle.com>2014-08-29 15:19:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-29 16:28:16 -0700
commit8e9801dfe37c9e68cdbfcd15988df2187191864e (patch)
tree27b0c2499e1a11a2ad5b8a8b1d0bfcae5f25cd8e /fs/ocfs2/cluster/tcp.h
parentc43c363def04cdaed0d9e26dae846081f55714e7 (diff)
downloadlinux-stericsson-8e9801dfe37c9e68cdbfcd15988df2187191864e.tar.gz
ocfs2: o2net: set tcp user timeout to max value
When tcp retransmit timeout(15mins), the connection will be closed. Pending messages may be lost during this time. So we set tcp user timeout to override the retransmit timeout to the max value. This is OK for ocfs2 since we have disk heartbeat, if peer crash, the disk heartbeat will timeout and it will be evicted, if disk heartbeat not timeout and connection idle for a long time, then this means the cluster enters split-brain state, since fence can't happen, we'd better keep the connection and wait network recover. Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Reviewed-by: Srinivas Eeda <srinivas.eeda@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/cluster/tcp.h')
-rw-r--r--fs/ocfs2/cluster/tcp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/tcp.h b/fs/ocfs2/cluster/tcp.h
index 5bada2a69b50..c571e849fda4 100644
--- a/fs/ocfs2/cluster/tcp.h
+++ b/fs/ocfs2/cluster/tcp.h
@@ -63,6 +63,7 @@ typedef void (o2net_post_msg_handler_func)(int status, void *data,
#define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000
#define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000
+#define O2NET_TCP_USER_TIMEOUT 0x7fffffff
/* TODO: figure this out.... */
static inline int o2net_link_down(int err, struct socket *sock)