FreeBSD 11.0 boot pool created by installer -- how to import and mount using installer?

[Jim Ohlstein]

Hello,

On 06/14/2017 08:39 PM, David Christensen wrote:
> On 06/14/2017 05:08 PM, Jim Ohlstein wrote:
>> On 06/14/2017 08:03 PM, David Christensen wrote:
>>> freebsd-questions:
>>>
>>> I have a FreeBSD 11.0 RELEASE i386 system that I created using the
>>> FreeBSD installer (FreeBSD-11.0-RELEASE-i386-memstick.img):
>>>
>>>          Partitioning                    Auto (ZFS)
>>>
>>>          ZFS Configuration
>>>              Pool Type/Disks             Stripe 1 Disk
>>>                  Virtual Device type     stripe
>>>                  (device)                ada0
>>>              Pool Name                   zroot
>>>              Force 4K Sectors            YES
>>>              Encrypt Disks               YES
>>>              Partition Scheme            MBR (BIOS)
>>>              Swap Size                   2g
>>>              Mirror Swap                 NO
>>>              Encrypt Swap                YES
>>>              Install                     Proceed with Installation
>>>
>>> I broke the system by attempting to change the root pool passphrase.
>>> I might be able to fix it if I can edit /boot/loader.conf.
>>>
>>> Booting the FreeBSD installer into multi-user mode and then going to a
>>> shell:
>>>
>>> # zpool list
>>> no pools available
>>>
>>> # zpool import
>>>      pool: bootpool
>>>        id: <redacted>
>>>     state: ONLINE
>>>    action: The pool can be imported using its name or numeric 
>>> identifier.
>>>    config:
>>>
>>>           bootpool    ONLINE
>>>             ada0s1a   ONLINE
>>>
>>> # zpool import bootpool
>>> cannot import 'bootpool': pool may be in use from other system
>>> use '-f' to import anyway
>>>
>>> # zpool import -f bootpool
>>> cannot mount '/bootpool': failed to created mountpoint
>>>
>>> Choosing Live CD produces the same end result.
>>>
>>> I previously obtained the same end result by booting into single-user
>>> mode.
>>>
>>> How do I import and mount bootpool using the installer that created it?
>>
>> Try
>>
>> # zpool import -f -o mountpoint=/mnt bootpool
> 
> Thanks for the reply.
> 
> 
> Booting FreeBSD 11.0 RELEASE i386 installer into single-user mode and 
> accepting default shell:
> 
> # zpool import -f -o mountpoint=/mnt bootpool
> ZFS NOTICE: KSTACK_PAGES is 2 which could result in stack overflow panic!
> Please consider adding 'options KSTACK_PAGES=4' to your kernel config
> ZFS NOTICE: Prefetch is disabled by default on i386 -- to enable, add 
> "vfs.zfs.prefetch_disable=0" to /boot/loader.conf.
> ZFS WARNING: Recommended minimum kmem_size is 512 MB; expect unstable 
> behavior.  Consider tuning vm.kmem_size and vm.kmem_size_max in 
> /boot/loader.conf.
> ZFS filesystem version: 5
> ZFS storage pool version: features support (5000)
> property 'mountpoint' is not a valid pool property

Hmmm.... That's odd.

# zfs get mountpoint zroot
NAME   PROPERTY    VALUE       SOURCE
zroot  mountpoint  /zroot      local


-- 
Jim Ohlstein
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