[Dump-devel] dump -W|w no longer work

[Trent P. <xy...@sp...>]

The dump -W or -w modes no longer appear to work with dump 0.4b33.  I've
traced it down to changing dump to look in /etc/mtab before /etc/fstab.

My /etc/mtab file looks like this:
/dev/hdc1 /home ext2 rw 0 0
/dev/hda2 /usr ext2 rw 0 0

While fstab has lines like these:
LABEL=/home             /home                   ext2    defaults        1 2
LABEL=/usr              /usr                    ext2    defaults        1 2

The fstab files does have the fs_freq value set to 1, but for some reason
mount doesn't preserve fs_freq or fs_passno when it creates entries /etc/mtab. 
This confuses dump, which now thinks I don't want to dump any filesystems. 
I've observed this behavior with mount 2.10f, 2.11n and 2.11g.

For dump -w usage, it seems like looking just in /etc/fstab would make the
most sense, since /etc/mtab and /proc/mounts always have fs_freq set to zero,
which makes dump -w pointless.