GPT boot with ZFS RAIDZ "ZFS: i/o error - all block copies unavailable"

[Robert Noland]

On Sat, 2009-11-14 at 10:15 +0100, Krzysztof Dajka wrote:
> Thanks Matt for the patch. I used it with 8.0RC3 release. I installed
> FreeBSD under Linux (KVM) my 3x500GB drives were mounted as a scsi
> drives. Installation went smoothly but when I rebooted FreeBSD guest
> it hang as usual ;) with "ZFS: i/o error - all block copies
> unavailable", well it also spit out some LBA errors for the first
> time. I was a little disappointed, because I've been trying for three
> weeks to replace my Debian system with broken ext3 fs with FreeBSD on
> raidz. But I thought to myself I'll give it a try, and run FreeBSD
> native. To my suprise it welcomed me with login prompt. Once again
> thanks for the patch. It would be good idea to merge it with final
> release.

This was approved by re@ and has been merged to the release branch.  It
should be included in 8.0-RELEASE.

robert.

> On 11/13/09, Stefan Esser <se at freebsd.org> wrote:
> > On 13.11.2009 15:25, Robert Noland wrote:
> >> I think we have missed the boat, but I'll talk to re@ and see if we
> >> can get it in.
> >
> > The patch fixed GPT/ZFS booting for me, too. It would be good to have
> > it in 8.0 (since it is definitely required to boot from ZFS pools with
> > non-trivial sizes), and does not affect anybody not trying to boot
> > this way. OTOH, it since you cannot just install FreeBSD on pure ZFS
> > from sysinstall, it might be sufficient to prominently warn about this
> > problem and point at the required patch, to prevent foot-shooting.
> >
> > But having this patch that has been successfully tested by a number
> > of people that suffered from the GPT/ZFS boot problem looks highly
> > preferable to me ...
> >
> > Regards, STefan
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-- 
Robert Noland <rnoland at FreeBSD.org>
FreeBSD