From: Tao Ma Date: Thu, 10 Jan 2008 07:20:55 +0000 (+0800) Subject: ocfs2/dlm: Clear joining_node on hearbeat node down X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2d4b1cbb44f5557727c35895a83f82d023573fa9;p=linux-beck.git ocfs2/dlm: Clear joining_node on hearbeat node down Currently the process of dlm join contains 2 steps: query join and assert join. After query join, the joined node will set its joining_node. So if the joining node happens to panic before the 2nd step, the joined node will fail to clear its joining_node flag because that node isn't in the domain map. It at least cause 2 problems. 1. All the new join request will fail. So no new node can mount the volume. 2. The joined node can't umount the volume since during the umount process it has to wait for the joining_node to be unknown. So the umount will be hanged. The solution is to clear the joining_node before we check the domain map. Signed-off-by: Tao Ma Signed-off-by: Mark Fasheh --- diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index b10f3e313fbf..91f747b8a538 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -2270,6 +2270,12 @@ static void __dlm_hb_node_down(struct dlm_ctxt *dlm, int idx) } } + /* Clean up join state on node death. */ + if (dlm->joining_node == idx) { + mlog(0, "Clearing join state for node %u\n", idx); + __dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN); + } + /* check to see if the node is already considered dead */ if (!test_bit(idx, dlm->live_nodes_map)) { mlog(0, "for domain %s, node %d is already dead. " @@ -2288,12 +2294,6 @@ static void __dlm_hb_node_down(struct dlm_ctxt *dlm, int idx) clear_bit(idx, dlm->live_nodes_map); - /* Clean up join state on node death. */ - if (dlm->joining_node == idx) { - mlog(0, "Clearing join state for node %u\n", idx); - __dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN); - } - /* make sure local cleanup occurs before the heartbeat events */ if (!test_bit(idx, dlm->recovery_map)) dlm_do_local_recovery_cleanup(dlm, idx);