By now (definitely xenial and above), this functionality has been implemented via the cryptsetup package. It will take care of unlocking resume devices so that one can simply use "resume=/dev/mapper/foo" for the parameter.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/91867 Title: [PATCH] allow resume from LUKS encrypted swap partition Status in initramfs-tools package in Ubuntu: Incomplete Bug description: Binary package hint: initramfs-tools The attached patch allows to suspend and resume to a LUKS encrypted swap partition. This means that all data (including passwords) that would otherwise be written to disk in plain text will be encrypted. To make use of the patch, you must * create a LUKS encrypted partition * activate the device with cryptsetup luksOpen * run mkswap on it and enter it in fstab as swap * change your kernel's resume=* line to resume=LUKS=/name/of/harddiskpartition:devicemapper name (actual process depends on the bootloader used) For example resume=LUKS=/dev/hda3:cryptswap * then run update-initramfs to build a new initramfs. You will then be asked to provide the password for the swap partition upon boot and the script will try to resume from it. If it can't find swsuspend signatures, boot will continue. The script will also automatically setup correct suspend device for swsuspend. I have extensively tested this on Feisty. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/91867/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
