Scot Hetzel writes: > On Wed, Jul 22, 2009 at 9:37 PM, George Hartzell<hartzell_at_alerce.com> wrote: > > > > 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. > > > I haven't tested this, but try the following: > > 1. boot the 8.0BETA install/fixit media > 2. goto the fixit environment > 3. Create /boot/zfs directory > 4. load the kernel modules opensolaris.ko and zfs.ko > 5. import the pool, and mount the root filesystem on /mnt > 6. Copy /boot/zfs/zpool.cache to /mnt/boot/zfs > 7. Reboot the system I'd tried that, just did it again to be sure. Didn't help. I don't think that the {gpt,}zfsboot code uses that file, I think that's a kernel thing. g.Received on Thu Jul 23 2009 - 02:27:34 UTC
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