This is a note to let you know that I've just added the patch titled
ocfs2: fix cluster hang after a node dies
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ocfs2-fix-cluster-hang-after-a-node-dies.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1c01967116a678fed8e2c68a6ab82abc8effeddc Mon Sep 17 00:00:00 2001
From: Changwei Ge <ge.changwei@xxxxxxx>
Date: Wed, 15 Nov 2017 17:31:33 -0800
Subject: ocfs2: fix cluster hang after a node dies
From: Changwei Ge <ge.changwei@xxxxxxx>
commit 1c01967116a678fed8e2c68a6ab82abc8effeddc upstream.
When a node dies, other live nodes have to choose a new master for an
existed lock resource mastered by the dead node.
As for ocfs2/dlm implementation, this is done by function -
dlm_move_lockres_to_recovery_list which marks those lock rsources as
DLM_LOCK_RES_RECOVERING and manages them via a list from which DLM
changes lock resource's master later.
So without invoking dlm_move_lockres_to_recovery_list, no master will be
choosed after dlm recovery accomplishment since no lock resource can be
found through ::resource list.
What's worse is that if DLM_LOCK_RES_RECOVERING is not marked for lock
resources mastered a dead node, it will break up synchronization among
nodes.
So invoke dlm_move_lockres_to_recovery_list again.
Fixs: 'commit ee8f7fcbe638 ("ocfs2/dlm: continue to purge recovery lockres when recovery master goes down")'
Link: http://lkml.kernel.org/r/63ADC13FD55D6546B7DECE290D39E373CED6E0F9@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Changwei Ge <ge.changwei@xxxxxxx>
Reported-by: Vitaly Mayatskih <v.mayatskih@xxxxxxxxx>
Tested-by: Vitaly Mayatskikh <v.mayatskih@xxxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Joseph Qi <jiangqi903@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/dlm/dlmrecovery.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -2419,6 +2419,7 @@ static void dlm_do_local_recovery_cleanu
dlm_lockres_put(res);
continue;
}
+ dlm_move_lockres_to_recovery_list(dlm, res);
} else if (res->owner == dlm->node_num) {
dlm_free_dead_locks(dlm, res, dead_node);
__dlm_lockres_calc_usage(dlm, res);
Patches currently in stable-queue which might be from ge.changwei@xxxxxxx are
queue-4.9/ocfs2-fix-cluster-hang-after-a-node-dies.patch
queue-4.9/ocfs2-should-wait-dio-before-inode-lock-in-ocfs2_setattr.patch