[Ukfreebsd] Confused by ZFS root(s)
jon at axismilton.ltd.uk
Mon Feb 5 11:19:17 GMT 2018
I am currently gaining control of 11.0 servers left behind by somebody
else and the first things to do are password reset, health check, backup
I am a ZFS newby but it's growing on me. One thing confusing me is the
weird filesystem root arrangement.
NAME USED AVAIL REFER MOUNTPOINT
zroot 214G 685G 144K none
zroot/ROOT 96.7G 685G 144K none
zroot/ROOT/default 96.7G 685G 96.7G /
On this particular server I booted off a stick, did
zpool import -fR zroot somewhere
chroot somewhere passwd
zpool export zroot
and that was fine.
I then set up a Virtualbox machine for a colleague to train on with a
memstick image and a couple of blank disks. I installed with the "Guided
ZFS root" option. I then tried the same break-in procedure but after
zpool import the guts of the system just wasn't mounted. I just had the
other filesystems (various usr and var).
I had to
zfs mount zroot/ROOT/default
then proceed as before.
So 1) What are these extra (filesystem) roots about apart from confusing
2) Why might my virtual machine not mount the important one
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