ZFS migration - New pool lost after reboot

[Sebastian Wolfgarten]

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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