diff options
| author | Sunil Mushran <sunil.mushran@oracle.com> | 2010-02-02 02:34:58 +0100 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-02-04 02:51:41 +0100 |
| commit | cda70ba8c05a8661f882862c4699a31d215ab151 (patch) | |
| tree | 3aec5061ae7a361dc2706225ad38928ccd860a02 | |
| parent | ocfs2: Plugs race between the dc thread and an unlock ast message (diff) | |
| download | linux-cda70ba8c05a8661f882862c4699a31d215ab151.tar.xz linux-cda70ba8c05a8661f882862c4699a31d215ab151.zip | |
ocfs2/dlm: Remove BUG_ON in dlm recovery when freeing locks of a dead node
During recovery, the dlm frees the locks for the dead node. If it finds a
lock in a resource for the dead node, it expects that node to also have a
ref in that lock resource. If not, it BUGs.
ossbz#1175 was filed with the above BUG. Now, while it is correct that we
should be expecting the ref, I see no reason why we have to BUG. After all,
we are freeing up the lock and clearing the ref.
This patch replaces the BUG_ON with a printk(). Hopefully, that will give
us more clues next time this happens.
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1175
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
| -rw-r--r-- | fs/ocfs2/dlm/dlmrecovery.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index ad712211d4ea..344bcf90cbf4 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -2243,7 +2243,12 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm, mlog(0, "%s:%.*s: freed %u locks for dead node %u, " "dropping ref from lockres\n", dlm->name, res->lockname.len, res->lockname.name, freed, dead_node); - BUG_ON(!test_bit(dead_node, res->refmap)); + if(!test_bit(dead_node, res->refmap)) { + mlog(ML_ERROR, "%s:%.*s: freed %u locks for dead node %u, " + "but ref was not set\n", dlm->name, + res->lockname.len, res->lockname.name, freed, dead_node); + __dlm_print_one_lock_resource(res); + } dlm_lockres_clear_refmap_bit(dead_node, res); } else if (test_bit(dead_node, res->refmap)) { mlog(0, "%s:%.*s: dead node %u had a ref, but had " |