[Libguestfs] libguestfs fails on FreeBSD9.3, MINIX3 qcow2 images

[Assaf Gordon]

Hello Richard,

On 09/18/2014 02:47 PM, Richard W.M. Jones wrote:
> Note that you can do useful things with libguestfs without necessarily
> needing inspection to work.  Libguestfs will open any disk image, but
> without inspection you won't be able to detect OSes in the disk image
> nor map devices to mountpoints, unless you do it yourself.

Two more related issues:

-1-
With minix, "virt-df" returns negative values:

=====
$ virt-df -a ./minixR330.qcow2
Filesystem                           1K-blocks       Used  Available  Use%
minixR330.qcow2:/dev/sda5              2075188      11892    2063296    1%
minixR330.qcow2:/dev/sda6              1215924     -94776    1310700   -7%
minixR330.qcow2:/dev/sda7              1895536     312296    1583240   17%
=====


-2-
With the FreeBSD, "guestfish" can't mount the "ufs" filesystem:
=====
$ guestfish -a ./freebsd93.qcow2
><fs> run
><fs> list-filesystems
/dev/sda1: unknown
/dev/sda2: ufs
/dev/sda3: unknown
><fs> mount-ro /dev/sda2 /
libguestfs: error: mount_ro: /dev/sda2 on / (options: 'ro'): mount: wrong fs type, bad option, bad superblock on /dev/sda2,
        missing codepage or helper program, or other error
        In some cases useful info is found in syslog - try
        dmesg | tail  or so
=====

The "dmesg" (from without guestfish) shows this:
=====
[   17.052574] You didn't specify the type of your ufs filesystem
[   17.052574]
[   17.052574] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
[   17.052574]
[   17.052574] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
[   17.068725] ufs_read_super: bad magic number
=====