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Date: Mon, 23 Mar 2015 10:48:39 +0100
From: Fabian Keil <freebsd-listen@fabiankeil.de>
To: freebsd-questions@freebsd.org
Subject: Re: gptzfsboot problem - anyone awake
Message-ID: <018062e6.13dd2c75@fabiankeil.de>
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Per olof Ljungmark <peo@intersonic.se> wrote:

> FBSD 10-STABLE and a Proliant P410 controller
> Rebuilt world and kernel last night, rebooted tonight:
>=20
> gptzfsboot: error 1 lba 32
> gptzfsboot: error 1 lba 1
> gptzfsboot: No ZFS pools located, can't boot
>=20
> As the boot problem with this controller was known when we installed it
> we have two logical drives and boots from the second to get around it.
>=20
> The box has been upgraded several times during the last four months with
> out a problem.

Has the gptzfsboot been updated as well or could it have gotten corrupted?
=20
> I tried to boot from a memstick with latest 10-STABLE (r280048)
>=20
> > load /boot/kernel/kernel
> > load /boot/kernel/opensolaris.ko
> > load /boot/kernel/zfs.ko
> > set vfs.root.mountfrom=3D"pool-name"
> > boot
>=20
> But that produced a panic
>=20
> panic:mountroot: unable to (re-)mount root
>=20
> Ideas anyone? I'm out of them just now...

To boot from a ZFS root, the vfs.root.mountfrom value should
start with "zfs:".

Fabian

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