summaryrefslogtreecommitdiffstats
path: root/fs/ocfs2/cluster/nodemanager.h
diff options
context:
space:
mode:
authorSunil Mushran <sunil.mushran@oracle.com>2009-11-18 01:29:19 +0100
committerJoel Becker <joel.becker@oracle.com>2009-12-03 01:49:26 +0100
commitf6656d26d17b2598f43cd41be088853fa2a03397 (patch)
tree5fdf95fdfab4302e28d9f00cf89ea4785ea9325c /fs/ocfs2/cluster/nodemanager.h
parentocfs2: Set MS_POSIXACL on remount (diff)
downloadlinux-f6656d26d17b2598f43cd41be088853fa2a03397.tar.xz
linux-f6656d26d17b2598f43cd41be088853fa2a03397.zip
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/nodemanager.h')
-rw-r--r--fs/ocfs2/cluster/nodemanager.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/nodemanager.h b/fs/ocfs2/cluster/nodemanager.h
index c992ea0da4ad..09ea2d388bbb 100644
--- a/fs/ocfs2/cluster/nodemanager.h
+++ b/fs/ocfs2/cluster/nodemanager.h
@@ -33,6 +33,12 @@
#include <linux/configfs.h>
#include <linux/rbtree.h>
+enum o2nm_fence_method {
+ O2NM_FENCE_RESET = 0,
+ O2NM_FENCE_PANIC,
+ O2NM_FENCE_METHODS, /* Number of fence methods */
+};
+
struct o2nm_node {
spinlock_t nd_lock;
struct config_item nd_item;
@@ -58,6 +64,7 @@ struct o2nm_cluster {
unsigned int cl_idle_timeout_ms;
unsigned int cl_keepalive_delay_ms;
unsigned int cl_reconnect_delay_ms;
+ enum o2nm_fence_method cl_fence_method;
/* this bitmap is part of a hack for disk bitmap.. will go eventually. - zab */
unsigned long cl_nodes_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];