From ea2034416b54700e30371f2ad6517cbb94674083 Mon Sep 17 00:00:00 2001 From: Sunil Mushran Date: Sat, 9 Oct 2010 10:26:23 -0700 Subject: ocfs2/dlm: Add message DLM_QUERY_REGION Adds new dlm message DLM_QUERY_REGION that sends the names of all active heartbeat regions. This message is only sent in the global heartbeat mode. If the regions in the joining node do not fully match the ones in the active nodes, the join domain request is rejected. Signed-off-by: Sunil Mushran --- fs/ocfs2/cluster/ocfs2_nodemanager.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'fs/ocfs2/cluster/ocfs2_nodemanager.h') diff --git a/fs/ocfs2/cluster/ocfs2_nodemanager.h b/fs/ocfs2/cluster/ocfs2_nodemanager.h index 5b9854bad571..49b594325bec 100644 --- a/fs/ocfs2/cluster/ocfs2_nodemanager.h +++ b/fs/ocfs2/cluster/ocfs2_nodemanager.h @@ -36,4 +36,10 @@ /* host name, group name, cluster name all 64 bytes */ #define O2NM_MAX_NAME_LEN 64 // __NEW_UTS_LEN +/* + * Maximum number of global heartbeat regions allowed. + * **CAUTION** Changing this number will break dlm compatibility. + */ +#define O2NM_MAX_REGIONS 32 + #endif /* _OCFS2_NODEMANAGER_H */ -- cgit v1.2.3