Date: Sat, 04 Feb 2012 21:56:26 -0700 From: Chris Jones <chris@cjones.org> To: freebsd-questions@freebsd.org Subject: gpt zfs raidz1 boot failure Message-ID: <4F2E0BFA.8040308@cjones.org>
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I have a raidz1 in degraded mode, with only 1 disk available. When I try to boot it, I get this: ZFS: can only boot from disk, mirror, raidz1, raidz2 and raidz3 vdevs ZFS: i/o error - all block copies unavailable ZFS: can't read MOS ZFS: unexpected object set type 0 ...followed by a couple of attempts to load maxroot/boot/kernel/kernel. I've carefully followed the instructions at http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE -- except that I'm starting with a degraded zfs so I can transition my data from gmirror. Here's more system info: maxwell$ uname -a FreeBSD maxwell.cjones.org 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:15:25 UTC 2012 root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 maxwell# gpart show ada2 => 34 488281183 ada2 GPT (232G) 34 128 1 freebsd-boot (64k) 162 488281055 2 freebsd-zfs (232G) maxwell# zpool status pool: maxroot state: DEGRADED status: One or more devices has been taken offline by the administrator. Sufficient replicas exist for the pool to continue functioning in a degraded state. action: Online the device using 'zpool online' or replace the device with 'zpool replace'. scan: none requested config: NAME STATE READ WRITE CKSUM maxroot DEGRADED 0 0 0 raidz1-0 DEGRADED 0 0 0 ada2p2 ONLINE 0 0 0 8747991784175675917 OFFLINE 0 0 0 was /usr/bigfile errors: No known data errors The errors seem to indicate that it's getting to the first- and second-stage bootstrap, but it's unable to load /boot/zfsloader; correct? The first line of error text seems to indicate that the bootstrap thinks my pool isn't a raidz1; but the output of zpool says otherwise. Any thoughts? Chris
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