Re: [Libguestfs] missing btrfs subvol support

On Fri, Oct 10, 2014 at 01:47:01PM +0200, Olaf Hering wrote: I wonder if this is an Augeas thing? We use Augeas to parse the /etc/fstab btrfs entries, see src/inspect-fs-unix.c: check_fstab: https://github.com/libguestfs/libguestfs/blob/master/src/inspect-fs-unix.... And we then pass the subvol back to the mount command in daemon/mount.c (which doesn't alter it). https://github.com/libguestfs/libguestfs/blob/master/daemon/mount.c#L154 You could try: cd /tmp mkdir etc cat > etc/fstab <<EOF UUID=123 swap swap defaults 0 0 UUID=456 / btrfs defaults 0 0 UUID=789 /var/spool btrfs subvol=@/var/spool 0 0 EOF augtool -r /tmp In augtool: augtool> ls /files/etc/fstab/3/vfstype augtool> get /files/etc/fstab/3/vfstype /files/etc/fstab/3/vfstype = btrfs augtool> get /files/etc/fstab/3/spec /files/etc/fstab/3/spec = UUID=789 augtool> get /files/etc/fstab/3/file /files/etc/fstab/3/file = /var/spool augtool> get /files/etc/fstab/3/dump /files/etc/fstab/3/dump = 0 augtool> get /files/etc/fstab/3/opt/value /files/etc/fstab/3/opt/value = @/var/spool My guess is that the last one (opt/value) will be different for you. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v