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nfsv3: Make v3 mounts fail with ETIMEDOUTs instead EIO on mountd timeouts

Message ID 1350408139-4245-1-git-send-email-steved@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Steve Dickson Oct. 16, 2012, 5:22 p.m. UTC 
From: Scott Mayhew <smayhew@redhat.com>

In very busy v3 environment, rpc.mountd can respond to the NULL
procedure but not the MNT procedure in a timely manner causing
the MNT procedure to time out. The problem is the mount system
call returns EIO which causes the mount to fail, instead of
ETIMEDOUT, which would cause the mount to be retried.

This patch sets the RPC_TASK_SOFT|RPC_TASK_TIMEOUT flags to
the rpc_call_sync() call in nfs_mount() which causes
ETIMEDOUT to be returned on timed out connections.

Signed-off-by: Steve Dickson <steved@redhat.com>
---
 fs/nfs/mount_clnt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 8e65c7f..015f71f 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -181,7 +181,7 @@  int nfs_mount(struct nfs_mount_request *info)
 	else
 		msg.rpc_proc = &mnt_clnt->cl_procinfo[MOUNTPROC_MNT];
 
-	status = rpc_call_sync(mnt_clnt, &msg, 0);
+	status = rpc_call_sync(mnt_clnt, &msg, RPC_TASK_SOFT|RPC_TASK_TIMEOUT);
 	rpc_shutdown_client(mnt_clnt);
 
 	if (status < 0)