mounting/exporting/importing a zfs volume

Paul Webster paul.g.webster at
Mon Feb 11 17:36:49 UTC 2019

mdconfig -a -t vnode -f <path> afaik

once they are mounted you could dd them over to the zvols and then resize
them from within the vm

On Mon, 11 Feb 2019 at 17:04, Victor Sudakov <vas at> wrote:

> Dear Colleagues,
> vm-bhyve keeps virtual machines on zfs volumes with volmode=dev. How can
> I access/mount the filesystems within the volume when the virtual host
> is offline?
> If I kept virtual disks in raw files, I could access them as devices
> with mdconfig. But:
> root at newserv:~ # mdconfig -a -f /dev/zvol/zroot/vm/mail/disk0
> mdconfig: /dev/zvol/zroot/vm/mail/disk0 is not a regular file
> root at newserv:~ #
> Also, how can I exchange those zfs volumes for use with other
> hypervisors? They are not real raw disk files so I cannot use
> sysutils/vmdktool etc.
> --
> Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
> 2:5005/49 at fidonet

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