Re: [Libguestfs] libguestfs and zfs-fuse
On Tuesday 04 February 2014 09:54:58 Richard W.M. Jones wrote:
On Mon, Feb 03, 2014 at 09:14:09PM +0000, Richard W.M. Jones wrote:
> On Mon, Feb 03, 2014 at 03:29:37PM -0500, Andre Goree wrote:
> > Ahhh, understood. I do have have an image I can provide that was
> > installed onto and MBR layout (seemed the easiest for libguestfs
> > to
> > understand, GPT is preferred if libguestfs works well with it, but
> > that's another matter I can look into later). Standby let me
> > clean
> > it up a bit and I'll get it to you -- I'll put it on my box and
> > send
> > ya a link offlist.
>
> Yes it would be useful to have this image. Either MBR or GPT
> should work equally well.
FYI Andre sent me a disk image:
$ qemu-img info FreeBSD_ZFS-test.qcow2
image: FreeBSD_ZFS-test.qcow2
file format: qcow2
virtual size: 1.0G (1073741824 bytes)
disk size: 1.0G
cluster_size: 65536
$ guestfish --ro -a FreeBSD_ZFS-test.qcow2
Welcome to guestfish, the guest filesystem shell for
editing virtual machine filesystems and disk images.
Type: 'help' for help on commands
'man' to read the manual
'quit' to quit the shell
><fs> run
><fs> list-filesystems
><fs> list-partitions
/dev/sda1
><fs> file /dev/sda1
; partition 4: ID=0xa5, active, starthead 0, startsector 0, 50000
sectors
><fs> vfs-type /dev/sda1
zfs_member
I tried opening it with virt-rescue, but for some reason the zfs-fuse
daemon would not start, and hence other commands such as zpool didn't
work.
I've taken a quick look at this, and got a bit more with:
<rescue> ln -s ../run/lock /var/lock
<rescue> zfs-fuse-helper start
Starting zfs-fuse: [ OK ]
Immunizing zfs-fuse against OOM kills[ OK ]
Mounting zfs partitions: [ OK ]
and after this the zpool/zfs commands were usable.
Just note that:
a) the first command is not needed now with the newly released
development version libguestfs 1.25.33
b) I couldn't mount the image you provided, since it was created with
versions of zpool and zfs greater than what zfs-fuse currently
supports (it seems not having been updated in a while...)
so even if we automate somehow the starting of the zfs-fuse helper and
the handling of zpool/zfs, I'm not sure it could be actually useful with
a zfs-fuse not supporting recent versions.
(To have a test partition with ZFS, I had to create it on a
Debian/kFreeBSD 6.0 (oldstable), as even Debian/kFreeBSD 7 (stable) had
"too new" zfs stuff for zfs-fuse.)
--
Pino Toscano