Date: Wed, 22 Jul 2009 19:37:15 -0700 From: George Hartzell <hartzell@alerce.com> To: freebsd-current@freebsd.org Subject: gptzfsboot doesn't like change (failure after swapping drives) Message-ID: <19047.52443.164412.363239@already.local>
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I've been playing around with building an 8.0BETA2 system with everything on a single zfs filesystem (I'll get fancier later) on a zpool that is a 4 disk raidz. I'm using GPT partitions and glabels so that I can move the drives around w/out drama. Things work well, but if I swap a pair of drives then try to boot I get the message that other folks have reported: ZFS: i/o error - all block copies unavailable. ZFS: can't read MOS ZFS: unexpected object set type lld ZFS: unexpected object set type lld Then a couple of boot: prompts. If I boot off of the 8.0BETA2 media I can import the pool, even with the drives in different slots. When I put the drives back into their original slots (verified by booting the USB stick and checking with glabel status) I still can't boot off of them, which surprised me a bit. Can anyone suggest something that I might be able to do to get a system in this state to boot? I've tried importing and exporting and importing the pool several times. g.
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