Bug#412210: [Pkg-cryptsetup-devel] Bug#412210: cryptsetup: fails to handle suspend filesystem in swap

[Leonard Norrgard]

> What does "/lib/udev/vol_id <swappartition>" identify the encrypted and
> unencrypted swap partitions as?

# /lib/udev/vol_id /dev/mapper/VG00-swap
ID_FS_USAGE=crypto
ID_FS_TYPE=crypto_LUKS
ID_FS_VERSION=
ID_FS_UUID= [<an uuid>]
ID_FS_LABEL=
ID_FS_LABEL_SAFE=


# cryptsetup luksOpen /dev/mapper/VG00-swap VG00-swap_crypt
Enter LUKS passphrase:
key slot 0 unlocked.
Command successful.

# /lib/udev/vol_id /dev/mapper/VG00-swap_crypt
ID_FS_USAGE=other
ID_FS_TYPE=suspend
ID_FS_VERSION=s1suspend
ID_FS_UUID=
ID_FS_LABEL=
ID_FS_LABEL_SAFE=

> What is the contents of /etc/crypttab and /etc/fstab

# /etc/crypttab
VG00-home_crypt /dev/mapper/VG00-home none luks
VG00-root_crypt /dev/mapper/VG00-root none luks
VG00-swap_crypt /dev/mapper/VG00-swap none luks,swap
VG00-var_crypt /dev/mapper/VG00-var none luks

# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/mapper/VG00-root_crypt /               ext3    noatime,errors=remount-ro 0       1
/dev/md0        /boot           ext3    noatime         0       2
/dev/mapper/VG00-home_crypt /home           ext3    noatime         0       2
/dev/mapper/VG00-var_crypt /var            ext3    noatime,nodev,nosuid 0       2
/dev/mapper/VG00-swap_crypt none            swap    sw              0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto     0       0
/dev/scd0       /media/floppy0  auto    rw,user,noauto  0       0
debugfs         /sys/kernel/debug debugfs defaults,user 0 0

> Which technique does kpowersave use to suspend? (suspend, suspend2, uswsusp?)

That, I don't know - I could maybe look this up later from the source
(it's in the kpowersave package in Debian), or through its project page at
http://sourceforge.net/projects/powersave/

Perhaps the severity of this issue should be raised, as the "normal"
user will not be able to restore data that's only stored in the
suspend filesystem - potential dataloss.

-- Leonard