[Bug 392818] Re: Encrypted Swap / Tux On Ice

[Leszek]

I've been also playing with ToI and encrypted swap, but it was not
working. Hibernation works ok, when I use not-encrypted swap.

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https://bugs.launchpad.net/bugs/392818

Title:
  Encrypted Swap / Tux On Ice

Status in “cryptsetup” package in Ubuntu:
  Invalid

Bug description:
  I have a custom kernel with Tux On Ice

  https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/75616

  after adding the scripts as shown there (tweaked to meet the tuxonice
  params instead of suspend2)

  the system fails to resume, the reason is when cryptroot script in
  local-top is creating the swap device $FSTYPE is unknown because
  tuxonice modified the swap partition to include the hibernate image,
  so the system never resumes

  i tweaked the script added:
          if [ -z "`grep noresume /proc/cmdline`" ]; then
                  gv_toi_resume=1
          else
                  gv_toi_resume=0
          fi
  before:
          # Prepare commands
          if /sbin/cryptsetup isLuks $cryptsource > /dev/null 2>&1; then

  and modified the fstype check to
                  if [ -z "$FSTYPE" ] || [ "$FSTYPE" = "unknown" ]; then
                          if [ "$crypttarget" == "swap" ] && [ "$FSTYPE" == "unknown" ] && [ "$gv_toi_resume" == 1 ]; then
                                  message "cryptsetup: toi swap ready"
                          else
                                  message "cryptsetup: unknown fstype, bad password or options?"
                                  $cryptremove
                                  continue
                          fi
                  fi
  notice crypttarget is called swap (but configuration may vary)
  i just modified for my needs, but i suspect more people would have trouble with this in the future

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