Daniel Staal wrote on Tue, Feb 14, 2012 at 21:39:40 -0500:
> --As of February 15, 2012 2:31:10 AM +0200, Daniel Shahaf is alleged
> to have said:
>
> >One of our amd64 servers runs 9.0-RC2 (releng/9.0@r228325) with a zfs
> >root.
> >
> >It fails to boot the 9.0-RELEASE (releng/9.0@r229305) GENERIC kernel
> >(self compiled) with a mountfrom error:
> >
> > http://people.apache.org/~danielsh/infra/loki-20120215-mountfrom.png
> > mountfrom> zfs:zroot
> > Trying to mount root from zfs:zroot []...
> > Mounting from zfs:zroot failed with error 2.
> >
> >We've tried to upgrade the zpool format 15->28; the symptoms are
> >unchanged. (The zroot fs is at version 4.)
> >
> >Why does 9.0-RC2 boot while 9.0-RELEASE (as /boot/testkernel) doesn't?
> >What can do to boot 9.0-RELEASE from our zfs root filesystem?
>
> --As for the rest, it is mine.
>
> Did you update the bootloader? Depending on when you installed the
> system, it's possible your upgrading the zpool means the bootloader
> can't read it.
>
Immediately after upgrading the zroot zpool I ran
gpart bootcode -p /boot/gptzfsboot -i 1 ${devices}
as instructed in /usr/src/UPDATING. I did not pass -b.
> Daniel T. Staal
>
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