Hi,
> On 25 Mar 2015, at 04:56, Greg Rivers <gcr+freebsd-stable at
tharned.org> wrote:
>
> I'm trying to build a bootable ZFS system on a USB drive. Using the
procedure below results in the following error when I try to boot:
>
> gptzfsboot: error 66 LBA 48
> gptzfsboot: error 66 LBA 1
> gptzfsboot: No ZFS pools located, can't boot
Presumably gptzfsboot relies on the BIOS mapping the USB device into a DOS
device. Do you have that support turned on in the BIOS?
> I'm using the dist files from the latest STABLE snapshot on a system
running 10.1-STABLE r279968 amd64. I've tried it with and without file
system compression. I found a similar report[1] in the FreeBSD Forums, but
there was no conclusion to that posting.
>
> What am I doing wrong?
>
> [1]
https://forums.freebsd.org/threads/freebsd-10-w-fresh-root-on-zfs-fails-to-boot.47651/#post-266106
> ---------------------------------------------------------------------------
> #!/bin/ksh
> set -x -e
>
> DISK=diskid/DISK-4C530009730530116424
> TMPDIR=/mnt
>
> gpart destroy -F ${DISK} || :
> gpart create -s GPT ${DISK}
> gpart add -a 4k -s 512k -t freebsd-boot ${DISK} # p1
> gpart add -a 4k -s 1g -t freebsd-swap ${DISK} # p2
> gpart add -a 4k -t freebsd-zfs ${DISK} # p3
> gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ${DISK}
>
> sysctl vfs.zfs.min_auto_ashift=12
> zpool create -o altroot=${TMPDIR} -m none -f syspool ${DISK}p3
> zfs create -o mountpoint=none syspool/ROOT
> zfs create -o mountpoint=/ -o compression=lz4 syspool/ROOT/default
> zpool set bootfs=syspool/ROOT/default syspool
> zfs create -o mountpoint=/var -o compression=lz4 syspool/var
> zfs create -o mountpoint=/usr -o compression=lz4 syspool/usr
> zfs create -o mountpoint=/home -o compression=lz4 syspool/home
>
> for DIST in base kernel lib32 games doc
> do
> fetch -o -
ftp://ftp.freebsd.com/pub/FreeBSD/snapshots/amd64/amd64/10.1-STABLE/${DIST}.txz
| tar -C ${TMPDIR} -x -f -
> done
>
> cat <<\! >${TMPDIR}/boot/loader.conf
> zfs_load="YES"
> !
> cat <<\! >${TMPDIR}/etc/rc.conf
> zfs_enable="YES"
> !
> cat <<\! >${TMPDIR}/etc/fstab
> # Device Mountpoint FStype Options Dump Pass#
> /dev/da0p2 none swap sw 0 0
> tmpfs /tmp tmpfs rw 0 0
> procfs /proc procfs rw 0 0
> fdescfs /dev/fd fdescfs rw 0 0
> !
>
> zpool export syspool
> ---------------------------------------------------------------------------
> --
> Greg Rivers
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>
--
Bob Bishop
rb at gid.co.uk