[lvm-devel] [PATCH] clvmd: command timeout handling fix

[Jacek Konieczny]

clvmd would wait for select() to time-out before processing command
time-outs. The select timeout would be set to the cmd_timeout ('-t'
command-line option) value, which is 60 seconds by default.

Normally the select() call is woken up more frequently, so the command
time-outs are never processed. This causes LVM tools wait forever on
cluster locking for operations started during temporary cluster
problems.

Signed-off-by: Jacek Konieczny <jajcus at jajcus.net>
---
 daemons/clvmd/clvmd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/daemons/clvmd/clvmd.c b/daemons/clvmd/clvmd.c
index eb0bffd..2b5d753 100644
--- a/daemons/clvmd/clvmd.c
+++ b/daemons/clvmd/clvmd.c
@@ -939,8 +939,8 @@ static void main_loop(int local_sock, int cmd_timeout)
 			}
 		}
 
-		/* Select timed out. Check for clients that have been waiting too long for a response */
-		if (select_status == 0) {
+		/* Check for clients that have been waiting too long for a response */
+		if (select_status >= 0) {
 			time_t the_time = time(NULL);
 
 			for (thisfd = &local_client_head; thisfd != NULL;
-- 
1.7.12.4