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.)