freebsd stable - Feb 2014 - Recovery of zpools went corrupt!?

Reposting the mail below as I had an oversight not to include subject
line. Apology in advance!
> Hi:
>
> Last time, Devin had been very kind to suggest me when the system
> borked while trying to upgrade from v10B3 to vRC1.
>
> Following FreeBSD 10.0-RELEASE, I installed to a new machine with
> encrypted root in zfs mirror, and since there was something wrong (a
> double quote by mistake) inserted in the /boot/device.hints, the
> kernel refused to boot and landed to the mountroot prompt.
>
> Therefore, in order to make changes what I did was:
>
> 1. Boot into LiveCD mode
> 2.     mkdir /tmp/bootpool
>         zpool import -f bootpool
>         zfs set mountpoint=/tmp/bootpool bootpool
>         zfs mount -a
>         cp /tmp/bootpool/boot/encryption.key /tmp/
>         zfs umount -a
>         zfs set mountpoint=/bootpool bootpool
>         zpool export bootpool
>         geli attach -k /tmp/encryption.key /dev/ada0p4
>         geli attach -k /tmp/encryption.key /dev/ada1p4
>         zpool import -R /mnt zroot
>         zpool import -R /mnt/bootpool bootpool
> 3. Removed the double quote (") from /bootpool/boot/device.hints and
> saved the file.
>
> 4. Rebooted the file and now it says that there is no boot/zfsbootloader.
>
> Appreciate if someone provides hints to recover the system in such
> situation without loosing any customized kernel and poudriere configs
> and contents? Thanks.
>
> /z
>

On Sun, Feb 2, 2014 at 1:04 PM, Zenny <garbytrash at gmail.com>
wrote:
> Reposting the mail below as I had an oversight not to include subject
> line. Apology in advance!
>
>> Hi:
>>
>> Last time, Devin had been very kind to suggest me when the system
>> borked while trying to upgrade from v10B3 to vRC1.
>>
>> Following FreeBSD 10.0-RELEASE, I installed to a new machine with
>> encrypted root in zfs mirror, and since there was something wrong (a
>> double quote by mistake) inserted in the /boot/device.hints, the
>> kernel refused to boot and landed to the mountroot prompt.
>>
>> Therefore, in order to make changes what I did was:
>>
>> 1. Boot into LiveCD mode
>> 2.     mkdir /tmp/bootpool
>>         zpool import -f bootpool
>>         zfs set mountpoint=/tmp/bootpool bootpool
>>         zfs mount -a
>>         cp /tmp/bootpool/boot/encryption.key /tmp/
>>         zfs umount -a
>>         zfs set mountpoint=/bootpool bootpool
>>         zpool export bootpool
>>         geli attach -k /tmp/encryption.key /dev/ada0p4
>>         geli attach -k /tmp/encryption.key /dev/ada1p4
>>         zpool import -R /mnt zroot
>>         zpool import -R /mnt/bootpool bootpool
>> 3. Removed the double quote (") from /bootpool/boot/device.hints
and
>> saved the file.
>>
>> 4. Rebooted the file and now it says that there is no
boot/zfsbootloader.
>>
Does the file /boot/zfsloader exist in /boot or /bootpool/boot?


-- 
DISCLAIMER:

No electrons were maimed while sending this message. Only slightly bruised.