bug#62711: Suspend-to-disk with LUKS-encrypted root doesn’t work

[Mekeor Melire]

2023-04-07 14:42 ludo@gnu.org:

> Since my laptop’s battery died, I set up suspend-to-disk as 
> documented
> in the manual (info "(guix) Swap Space").  I use a swap file on 
> top of
> my LUKS-encrypted root partition, so I added:
>
>      "resume=/swap"
>      "resume_offset=OFFSET"

I use the following configuration which works fine for me. (Except 
sometimes I have to wait for 2-3 minutes for the Linux kernel 
modules to get loaded; but that might be due to the special Linux 
kernel I'm using.)

#+begin_src scheme
(mapped-devices
 (list
   (mapped-device
     (source
       (uuid "SNIP"))
     (target "cryptroot")
     (type luks-device-mapping))))

(file-systems
 (cons
   (file-system
     (mount-point "/")
     (device "/dev/mapper/cryptroot")
     (type "ext4")
     (dependencies mapped-devices))
   %base-file-systems))

(kernel-arguments
 (cons*
   "resume=/dev/mapper/cryptroot"
   "resume_offset=5308416"
   %default-kernel-arguments))
#+end_src