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wiki-system/disable-encrypt-swap-partition.md
Michel Le Cocq 3c0a3a24dd
2020-06-24 09:37:24 +02:00

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disable encrypt swap partition

prerequisite

disable encrypt swap partition

  • Turn off swap
swapoff /dev/mapper/cryptswap
  • Undo the existing mapping.
cryptsetup luksClose /dev/mapper/cryptswap

  • remove your encrypt swap device define in your /etc/crypttab

  • ajust /etc/fstab to use your real swap partition

/dev/nvme0n1p2   none   swap   discard   0   0
  • make your partition a swap
mkswap /dev/nvme0n1p2
  • activate swap
swapon -a
  • remove file /etc/initramfs-tools/conf.d/resume
rm /etc/initramfs-tools/conf.d/resume

Register these changes.

root@laptop:/root# update-initramfs -u -k all
update-initramfs: Generating /boot/initrd.img-5.4.0-37-generic
cryptsetup: ERROR: Couldn't resolve device rpool/ROOT/ubuntu_0ctpm6
cryptsetup: WARNING: Couldn't determine root device
I: The initramfs will attempt to resume from /dev/nvme0n1p2
I: (UUID=09c1daa8-a572-41b9-8655-c38ea7778723)
I: Set the RESUME variable to override this.
root@laptop:/root#

/!\ le point ci-dessous est sans doute inutile

  • Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to point to your real partition
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/nvme0n1p2"

update-grub

Next you need to reboot to enable everything and test it.