Date: Tue, 16 Aug 2011 18:04:56 +0100 From: Tim Bishop <tim@bishnet.net> To: freebsd-fs@freebsd.org Subject: Re: Did zpool offline, then reboot, now "freebsd zfs i/o error - all block copies unavailable" Message-ID: <20110816170456.GH7564@carrick-users.bishnet.net> In-Reply-To: <20110816162223.GG7564@carrick-users.bishnet.net> References: <20110816162223.GG7564@carrick-users.bishnet.net>
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On Tue, Aug 16, 2011 at 05:22:23PM +0100, Tim Bishop wrote: > I suspected one of my disks (in a zpool mirror) had a problem, so I > thought I'd test this out by offlining the disk and rebooting. > > Unfortunately this failed during the reboot with the following error: > > freebsd zfs i/o error - all block copies unavailable > > A search of the archive suggests people have hit this before, but not in > the same circumstance (I think). > > I figured the pool being degraded might be the issue, so I booted from a > livecd and detatched the offlined disk leaving the pool in a good state. > Rebooted again but the same problem occured. > > I'm now back in the livecd reattaching the disk, but this'll take a long > time (ETA 24h). Fingers crossed it works! > > Whilst I wait, does anybody have any ideas what went wrong? Doh - simple I think. The cache file didn't match the real state of the system. Copied the one from the livecd's /boot/zfs to the single disk pool and it now boots fine. Tim. -- Tim Bishop http://www.bishnet.net/tim/ PGP Key: 0x5AE7D984
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