ZFS migration - New pool lost after reboot

[Sebastian Wolfgarten]

Hi,

to solve this one (for the archives maybe):

root at vm:~ # zpool import -N newpool
root at vm:~ # zfs set mountpoint=/ newpool/ROOT/default
zfs set mountpoint=none newpool/ROOT
zfs set mountpoint=/tmp newpool/tmp
zfs set mountpoint=/usr newpool/usr
zfs set mountpoint=/var newpool/var

reboot

Machine now starts like a charm with the new pool. Amazing.

Thanks for all your help guys, this is very much appreciated.

Best regards
Sebastian

> Am 03.05.2016 um 23:07 schrieb Sebastian Wolfgarten <sebastian at wolfgarten.com>:
> 
> Dear all,
> 
> thanks to Matthias I already fixed most of the issues but there is one thing I cannot fix yet. When trying to set the mount point for the / file system, I am getting strange errors:
> 
> root at vm:~ # zfs set mountpoint=none newpool/ROOT
> cannot open 'newpool/ROOT': dataset does not exist
> root at vm:~ # zpool import -c /tmp/newpool.cache -R /mnt newpool
> root at vm:~ # zfs set mountpoint=none newpool/ROOT
> cannot unmount '/mnt': Device busy
> root at vm:~ # zfs set mountpoint=/ newpool/ROOT/default
> cannot unmount '/mnt': Device busy
> root at vm:~ # zfs set mountpoint=/tmp newpool/tmp
> root at vm:~ # zfs set mountpoint=/usr newpool/usr
> root at vm:~ # zfs set mountpoint=/var newpool/var
> root at vm:~ # zfs set mountpoint=none newpool/ROOT
> cannot unmount '/mnt': Device busy
> root at vm:~ # zpool export newpool
> root at vm:~ # zfs set mountpoint=none newpool/ROOT
> cannot open 'newpool/ROOT': dataset does not exist
> 
> So basically, when the pool is not mounted the system says „dataset does not exist“ but when I mount it and try to change the mount point it comes back with „Device busy“. Any ideas on how I am supposed to set the mount point for the root file system (first & last line of the commands listed above)?
> 
> Many thanks.
> 
> Kind regards
> Sebastian
> 
>> Am 02.05.2016 um 23:45 schrieb Matthias Fechner <idefix at fechner.net>:
>> 
>> Am 02.05.2016 um 22:42 schrieb Sebastian Wolfgarten:
>>> root at vm:~ # zfs list
>>> NAME                   USED  AVAIL  REFER  MOUNTPOINT
>>> newpool                385M  5.41G    19K  /mnt/zroot
>>> newpool/ROOT           385M  5.41G    19K  /mnt
>>> newpool/ROOT/default   385M  5.41G   385M  /mnt
>>> newpool/tmp             21K  5.41G    21K  /mnt/tmp
>>> newpool/usr             76K  5.41G    19K  /mnt/usr
>>> newpool/usr/home        19K  5.41G    19K  /mnt/usr/home
>>> newpool/usr/ports       19K  5.41G    19K  /mnt/usr/ports
>>> newpool/usr/src         19K  5.41G    19K  /mnt/usr/src
>>> newpool/var            139K  5.41G    19K  /mnt/var
>>> newpool/var/audit       19K  5.41G    19K  /mnt/var/audit
>>> newpool/var/crash       19K  5.41G    19K  /mnt/var/crash
>>> newpool/var/log         44K  5.41G    44K  /mnt/var/log
>>> newpool/var/mail        19K  5.41G    19K  /mnt/var/mail
>>> newpool/var/tmp         19K  5.41G    19K  /mnt/var/tmp
>>> zroot                  524M  26.4G    96K  /zroot
>>> zroot/ROOT             522M  26.4G    96K  none
>>> zroot/ROOT/default     522M  26.4G   522M  /
>>> zroot/tmp             74.5K  26.4G  74.5K  /tmp
>>> zroot/usr              384K  26.4G    96K  /usr
>>> zroot/usr/home          96K  26.4G    96K  /usr/home
>>> zroot/usr/ports         96K  26.4G    96K  /usr/ports
>>> zroot/usr/src           96K  26.4G    96K  /usr/src
>>> zroot/var              580K  26.4G    96K  /var
>>> zroot/var/audit         96K  26.4G    96K  /var/audit
>>> zroot/var/crash         96K  26.4G    96K  /var/crash
>>> zroot/var/log          103K  26.4G   103K  /var/log
>>> zroot/var/mail          96K  26.4G    96K  /var/mail
>>> zroot/var/tmp         92.5K  26.4G  92.5K  /var/tmp
>>> 
>>> I am assuming I have to amend the zfs parameters for the mount points but I can’t seem to figure out what’s wrong. I tried things like:
>>> 
>>> zfs set mountpoint=/usr newpool/usr
>>> zfs set mountpoint=/tmp newpool/tmp
>>> zfs set mountpoint=/var newpool/var
>> 
>> zfs set mountpoint=none newpool/ROOT
>> zfs set mountpoin=/ newpool/ROOT/default
>> zfs set mountpoin=/tmp newpool/tmp
>> zfs set mountpoin=/usr newpool/usr
>> zfs set mountpoin=/var newpool/var
>> 
>> 
>> Gruß
>> Matthias
>> 
>> -- 
>> 
>> "Programming today is a race between software engineers striving to
>> build bigger and better idiot-proof programs, and the universe trying to
>> produce bigger and better idiots. So far, the universe is winning." --
>> Rich Cook
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