omg stupid bug cost me a partition

[Tom H]

On Tue, May 18, 2010 at 8:08 PM, William Hamra <w.hamra1987 at gmail.com> wrote:
> when i setup my system using the alternate CD, it saw my main hard drive
> as sdb, i setup on that hard drive a boot partition, an encrypted root
> partition, and a 2 GB encrypted swap partition using random key on every
> boot.
> on the other hard drive, which was detected by alternate CD as sda, i
> had my home partition, a partition for various stuff, and my backup
> partition, none encrypted, though my home directory is using ecryptfs.
> the third hard drive is an old IDE drive, detected as sdc, with 1
> partition for other types of backup.
> upon booting, the system detected my main as sda, and other as sdb.
> since initramfs contains a copy of crypttab which lists my root
> partition as UUID, this creates no problem... but what i didn't notice,
> is that crypttab lists the swap partition as a device node, namely,
> /dev/sdb3, as it was configured with the CD... just 2 hours ago, i
> decide to mount my backup partition and start restoring my files, to
> notice that my 60 GB partition has been mounted as swap over the past
> few days, and i lost all my backups. i am NOT happy.

How can a regular partition be mounted as swap? Is mkswap run at every
boot for encrypted swap partitions?!