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authorSunil Mushran <sunil.mushran@oracle.com>2009-11-18 03:29:19 +0300
committerJoel Becker <joel.becker@oracle.com>2009-12-03 03:49:26 +0300
commitf6656d26d17b2598f43cd41be088853fa2a03397 (patch)
tree5fdf95fdfab4302e28d9f00cf89ea4785ea9325c /fs/ocfs2/cluster/quorum.c
parent57b09bb5e492c37c1e4273fe4e435ffd1d2ddbe0 (diff)
downloadlinux-f6656d26d17b2598f43cd41be088853fa2a03397.tar.xz
ocfs2/cluster: Make fence method configurable - v2
By default, o2cb fences the box by calling emergency_restart(). While this scheme works well in production, it comes in the way during testing as it does not let the tester take stack/core dumps for analysis. This patch allows user to dynamically change the fence method to panic() by: # echo "panic" > /sys/kernel/config/cluster/<clustername>/fence_method Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/cluster/quorum.c')
-rw-r--r--fs/ocfs2/cluster/quorum.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/ocfs2/cluster/quorum.c b/fs/ocfs2/cluster/quorum.c
index bbacf7da48a4..639024033fce 100644
--- a/fs/ocfs2/cluster/quorum.c
+++ b/fs/ocfs2/cluster/quorum.c
@@ -74,8 +74,20 @@ static void o2quo_fence_self(void)
* threads can still schedule, etc, etc */
o2hb_stop_all_regions();
- printk("ocfs2 is very sorry to be fencing this system by restarting\n");
- emergency_restart();
+ switch (o2nm_single_cluster->cl_fence_method) {
+ case O2NM_FENCE_PANIC:
+ panic("*** ocfs2 is very sorry to be fencing this system by "
+ "panicing ***\n");
+ break;
+ default:
+ WARN_ON(o2nm_single_cluster->cl_fence_method >=
+ O2NM_FENCE_METHODS);
+ case O2NM_FENCE_RESET:
+ printk(KERN_ERR "*** ocfs2 is very sorry to be fencing this "
+ "system by restarting ***\n");
+ emergency_restart();
+ break;
+ };
}
/* Indicate that a timeout occured on a hearbeat region write. The