Date: Wed, 20 Jul 2011 01:38:56 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-hardware@freebsd.org Cc: Alexander Motin <mav@FreeBSD.org> Subject: ahci.ko / geom_mirror / zfs hangs up system when one of HDDs fauilts. Message-ID: <1981757790.20110720013856@serebryakov.spb.ru>
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Hello, Freebsd-hardware.
I've have two identical live locks when HDD becomes broken on
8.2-STABLE system with two SATA HDDs withgmirror and ZFS on them.
It is Hetzner-based server, so only access I have is LARA console,
but symptoms are identical in both cases: HDD becomes bad, ahci.ko
complains about timeouts, and after that server stops to respond on
high-level access attempts (ssh/HTTP/SMTP), but can be pinged both
with IPv4 and IPv6 addresses.
HDDs are identical, and they are splitted into several (BSD)partions.
Some partitions are mirrired with geom_mirror and one pair of
partitions are added to (mirrored) ZFS pool like this (I proved output
on rebooted one-HDD-only system, but, I think, it is clear how it
looks when both HDDs are Ok):
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# gmirror status
onlyone# gmirror status
Name Status Components
mirror/root DEGRADED ada0s1a
mirror/var DEGRADED ada0s1d
mirror/tmp DEGRADED ada0s1e
mirror/usr DEGRADED ada0s1f
mirror/databases DEGRADED ada0s1g
# zpool status
pool: pool
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas exist=
for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://www.sun.com/msg/ZFS-8000-2Q
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
pool DEGRADED 0 0 0
mirror DEGRADED 0 0 0
ada0s1h ONLINE 0 0 0
ada0s1h UNAVAIL 0 0 0 cannot open
errors: No known data errors
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Screenshot of LARA console in such case is attached.
--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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