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authorSrinivas Eeda <srinivas.eeda@oracle.com>2007-01-30 00:31:35 +0100
committerMark Fasheh <mark.fasheh@oracle.com>2007-02-07 21:09:14 +0100
commit1faf289454b9eeb6e463da3eee47f7009668370d (patch)
treefe77643771a985a20c3782fb2a952cf9c05937a5 /fs/debugfs/file.c
parentocfs2_dlm: Ensure correct ordering of set/clear refmap bit on lockres (diff)
downloadlinux-1faf289454b9eeb6e463da3eee47f7009668370d.tar.xz
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ocfs2_dlm: disallow a domain join if node maps mismatch
There is a small window where a joining node may not see the node(s) that just died but are still part of the domain. To fix this, we must disallow join requests if the joining node has a different node map. A new field node_map is added to dlm_query_join_request to send the current nodes nodemap along with join request. On the receiving end the nodes that are part of the cluster verifies if this new node sees all the nodes that are still part of the cluster. They disallow the join if the maps mismatch. Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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