ZFS RAID-Z panic on vdev failure + subsequent panics and hangs
Pawel Jakub Dawidek
pjd at FreeBSD.org
Fri Aug 7 19:13:17 UTC 2009
On Fri, Aug 07, 2009 at 09:45:38AM -0400, Boris Kochergin wrote:
> Maybe my kgdb chops aren't up to par, but I can't seem to see what
> ab_prev points to:
>
> (kgdb) up
> #12 0xffffffff8103a9e7 in arc_evict (state=Variable "state" is not
> available.
> ) at
> /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c:1489
> 1489 if (recycle && ab->b_size != bytes &&
> Current language: auto; currently c
> (kgdb) list
> 1484 LBOLT - ab->b_arc_access <
> arc_min_prefetch_lifespan)) {
> 1485 skipped++;
> 1486 continue;
> 1487 }
> 1488 /* "lookahead" for better eviction candidate */
> 1489 if (recycle && ab->b_size != bytes &&
> 1490 ab_prev && ab_prev->b_size == bytes)
> 1491 continue;
> 1492 hash_lock = HDR_LOCK(ab);
> 1493 have_lock = MUTEX_HELD(hash_lock);
> (kgdb) print ab
> $13 = (arc_buf_hdr_t *) 0xffffff0003ebc410
> (kgdb) print ab->b_size
> $14 = 1
> (kgdb) print bytes
> $15 = 16384
> (kgdb) print ab_prev
> No symbol "ab_prev" in current context.
Yeah, that's strange indeed. Could you try:
print ab->b_arc_node.list_prev
print ab->b_arc_node.list_next
--
Pawel Jakub Dawidek http://www.wheel.pl
pjd at FreeBSD.org http://www.FreeBSD.org
FreeBSD committer Am I Evil? Yes, I Am!
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