[Libguestfs] [PATCH 0/2] Fix btrfs blocksize and bind mkfs.btrfs (RHBZ#807905).

[Richard W.M. Jones]

https://bugzilla.redhat.com/show_bug.cgi?id=807905

Currently if you specify the blocksize parameter to mkfs-opts with a
btrfs filesystem, then it fails, because mkfs.btrfs interprets the -b
option as meaning filesystem size.

The first patch fixes this by disallowing blocksize (it cannot be
mapped meaningfully into btrfs parameters).

The second patch adds the full /sbin/mkfs.btrfs utility to the API.
We should eventually do the same for mke2fs.

Rich.