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ocfs2/dlm: Print more messages during lock migration 

When a lock resource is migrated, the dlm compares the migrated
locks with that that was already existing on the new node. If the
comparison fails, it BUGs. This patch prints more messages when the
comparison fails inorder to help with the root cause analyis.

http://oss.oracle.com/bugzilla/show_bug.cgi?id=1206
This does not fix bz1206. However, if we run into it again, we will
have more information to chew on.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Sunil Mushran 2010-01-25 16:57:40 -08:00 committed by Joel Becker
parent 71656fa6ec
commit 26636bf6b2
1 changed files with 38 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
fs/ocfs2/dlm/dlmrecovery.c
View File

@ -1750,6 +1750,7 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
struct dlm_lock *lock = NULL;
u8 from = O2NM_MAX_NODES;
unsigned int added = 0;
__be64 c;
mlog(0, "running %d locks for this lockres\n", mres->num_locks);
for (i=0; i<mres->num_locks; i++) {
@ -1797,19 +1798,48 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
/* lock is always created locally first, and
* destroyed locally last. it must be on the list */
if (!lock) {
__be64 c = ml->cookie;
mlog(ML_ERROR, "could not find local lock "
"with cookie %u:%llu!\n",
c = ml->cookie;
mlog(ML_ERROR, "Could not find local lock "
"with cookie %u:%llu, node %u, "
"list %u, flags 0x%x, type %d, "
"conv %d, highest blocked %d\n",
dlm_get_lock_cookie_node(be64_to_cpu(c)),
dlm_get_lock_cookie_seq(be64_to_cpu(c)));
dlm_get_lock_cookie_seq(be64_to_cpu(c)),
ml->node, ml->list, ml->flags, ml->type,
ml->convert_type, ml->highest_blocked);
__dlm_print_one_lock_resource(res);
BUG();
}
if (lock->ml.node != ml->node) {
c = lock->ml.cookie;
mlog(ML_ERROR, "Mismatched node# in lock "
"cookie %u:%llu, name %.*s, node %u\n",
dlm_get_lock_cookie_node(be64_to_cpu(c)),
dlm_get_lock_cookie_seq(be64_to_cpu(c)),
res->lockname.len, res->lockname.name,
lock->ml.node);
c = ml->cookie;
mlog(ML_ERROR, "Migrate lock cookie %u:%llu, "
"node %u, list %u, flags 0x%x, type %d, "
"conv %d, highest blocked %d\n",
dlm_get_lock_cookie_node(be64_to_cpu(c)),
dlm_get_lock_cookie_seq(be64_to_cpu(c)),
ml->node, ml->list, ml->flags, ml->type,
ml->convert_type, ml->highest_blocked);
__dlm_print_one_lock_resource(res);
BUG();
}
BUG_ON(lock->ml.node != ml->node);
if (tmpq != queue) {
mlog(0, "lock was on %u instead of %u for %.*s\n",
j, ml->list, res->lockname.len, res->lockname.name);
c = ml->cookie;
mlog(0, "Lock cookie %u:%llu was on list %u "
"instead of list %u for %.*s\n",
dlm_get_lock_cookie_node(be64_to_cpu(c)),
dlm_get_lock_cookie_seq(be64_to_cpu(c)),
j, ml->list, res->lockname.len,
res->lockname.name);
__dlm_print_one_lock_resource(res);
spin_unlock(&res->spinlock);
continue;
}
@ -1906,7 +1936,7 @@ skip_lvb:
spin_lock(&res->spinlock);
list_for_each_entry(lock, queue, list) {
if (lock->ml.cookie == ml->cookie) {
__be64 c = lock->ml.cookie;
c = lock->ml.cookie;
mlog(ML_ERROR, "%s:%.*s: %u:%llu: lock already "
"exists on this lockres!\n", dlm->name,
res->lockname.len, res->lockname.name,