I'm setting up a laptop with encrypted btrfs root.
Problem is, I can't seem to find a way to encrypt the swap so that it
would be usable for hibernation.
* Simple setup for encrypting swap uses a random key generated on each
boot, so resuming doesn't work.
* Using the same key for swap & root is not recommended because some
tool caches the password, making the whole thing meaningless [1]
* Using a swap file doesn't work because btrfs is Copy-On-Write, so the
filesystem may get messed up by hibernate/resume process.
I'm not sure if the "same key" problem exists in Fedora 16, I've tried
setting it up this way and I'm able to boot but not resume.
Any help appreciated!
[1]
https://wiki.archlinux.org/index.php/Talk:System_Encryption_with_LUKS_for_dm-crypt#Suspend_to_disk_instructions_are_insecure
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