ocfs2: Replace panic() with emergency_restart() when fencing (bebe6f12) · Commits · 戴 / test

We have noticed panic() hanging leading us to a situation in which the node, while otherwise dead, is still disk heartbeating. This leads to a hung cluster as the other nodes are waiting for this node to stop disk heartbeating. This situation is only resolved by power resetting the box. Signed-off-by:

Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by:

Mark Fasheh <mark.fasheh@oracle.com>

fs/ocfs2/cluster/quorum.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -46,6 +46,7 @@
		#include <linux/kernel.h>
		#include <linux/slab.h>
		#include <linux/workqueue.h>
		#include <linux/reboot.h>

		#include "heartbeat.h"
		#include "nodemanager.h"
		@@ -72,7 +73,9 @@ static void o2quo_fence_self(void)
		/* panic spins with interrupts enabled. with preempt
		* threads can still schedule, etc, etc */
		o2hb_stop_all_regions();
		panic("ocfs2 is very sorry to be fencing this system by panicing\n");

		printk("ocfs2 is very sorry to be fencing this system by restarting\n");
		emergency_restart();
		}

		/* Indicate that a timeout occured on a hearbeat region write. The

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