How to duplicate a pool with zfs send/recv without breaking mountpoints?

[Henri Hennebert]

Thomas Backman wrote:
> I'll let the output speak for itself. This is after running
> zpool create slave X && zfs create slave/received && NOW=$(date 
> +"backup-%Y%m%d-%H%M"); zfs snapshot -r tank@$NOW && zfs send -R 
> tank@$NOW | zfs recv -vFd slave/received && zpool export slave && zpool 
> import slave
> 
> [root at chaos ~]# mount
> tank/root on / (zfs, local, noatime)
> devfs on /dev (devfs, local)
> /dev/ad0s1a on /bootdir (ufs, local, soft-updates)
> tank/tmp on /tmp (zfs, local, noatime)
> tank/usr on /usr (zfs, local, noatime)
> tank/usr/ports on /usr/ports (zfs, local, noatime)
> tank/usr/ports/distfiles on /usr/ports/distfiles (zfs, local, noatime)
> tank/usr/src on /usr/src (zfs, local, noatime)
> tank/var on /var (zfs, local, noatime)
> //SERENITY at EXSCAPE/FBSDBACKUP on /mnt/backup (smbfs)
> slave/received/root on / (zfs, local, noatime)
> slave on /slave (zfs, local)
> slave/received/tmp on /tmp (zfs, local, noatime)
> slave/received/usr on /usr (zfs, local, noatime)
> slave/received/usr/ports on /usr/ports (zfs, local, noatime)
> slave/received/usr/ports/distfiles on /usr/ports/distfiles (zfs, local, 
> noatime)
> slave/received/usr/src on /usr/src (zfs, local, noatime)
> slave/received/var on /var (zfs, local, noatime)
> [root at chaos ~]# ls /dev
> [root at chaos ~]# zfs list
> internal error: failed to initialize ZFS library (shocking!)
> 
> Any ideas? I tried setting the mountpoint property on the slave, but I'm 
> pretty sure that didn't help (as the next (incremental) backup resets 
> the mountpoints to /... again, I suppose).

How about creating slave like this:

mkdir /slave
zpool create -R /slave -m none slave X

Henri
> 
> Regards,
> Thomas
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