Bug#220949: Installer overwrites user data without warning

[Steve McIntyre <steve@einval.com>]

From looking at the information on this bug, I'm thinking the easiest
way to fix this would be to add code to check the fs type on the
partitions we've been asked to install onto. If the fs is not
ext2/ext3/reiser/etc., then we should complain and (optionally) ask
the user "Are you REALLY sure you want to install onto the <foo>
filesystem on /dev/wherever?". That way people CAN force installation
onto non-standard media, but by default we should not do that.

Sound reasonable? I'm looking at the code right now to see where to
plug in the check.

-- 
Steve McIntyre, Cambridge, UK.                                steve@einval.com
Can't keep my eyes from the circling sky,
Tongue-tied & twisted, Just an earth-bound misfit, I...