On Thu, 4 Jan 2007, J. Milgram wrote:
what I'm trying to do: I have an init script that sets up encrypted swap
using dm_crypt. The script has the device name (/dev/hda1, whatever)
hardwired into it. Should be obvious how dangerous this is - if the script
migrates to a machine where /dev/hda1 is /home, then disaster (I once did
mkswap on the wrong partition, and boy is it painful). So I want to add a
test. Maybe I need to look at the swapon source...
Swapon checks that mkswap has already left the right magic numbers at the
start of the partition before blowing anything away. I can't seem to find
the man page for dm_crypt on the web, is it more like mkswap or more like
swapon? It seems hard to believe that you'd need to run the equivalent of
mkswap on every boot...
Alexey
