2020-06-23 09:42:29 +02:00
|
|
|
## encrypt swap partition
|
|
|
|
|
|
|
|
|
|
sources :
|
|
|
|
|
* [wiki.archlinux.org - dm-crypt/Swap encryption](https://wiki.archlinux.org/index.php/Dm-crypt/Swap_encryption#LVM_on_LUKS)
|
|
|
|
|
* [help.ubuntu.com - Enable Hibernate With Encrypted Swap](https://help.ubuntu.com/community/EnableHibernateWithEncryptedSwap)
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
apt-get install ecryptfs-utils
|
|
|
|
|
swapoff -a
|
|
|
|
|
cryptsetup luksFormat --cipher aes-xts-plain64 --verify-passphrase --key-size 256 /dev/nvme0n1p2
|
|
|
|
|
cryptsetup open /dev/<device> cryptswap
|
|
|
|
|
mkswap /dev/mapper/cryptswap
|
|
|
|
|
~~~
|
|
|
|
|
|
2020-06-23 09:56:22 +02:00
|
|
|
/!\ le point ci-dessous est sans doute inutile
|
|
|
|
|
|
|
|
|
|
* Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to remove resume part wich is now manage by initramfs
|
2020-06-23 09:42:29 +02:00
|
|
|
|
|
|
|
|
~~~
|
2020-06-23 09:56:22 +02:00
|
|
|
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
|
2020-06-23 09:42:29 +02:00
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
update-grub
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
Now ajust /etc/fstab to use your mapper, replace your encrypt swap device like bellow :
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
/dev/mapper/cryptswap none swap discard 0 0
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
add your encrypt swap device define in /etc/crypttab
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
cryptswap /dev/nvme0n1p2 none luks
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
swapon -a
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
printf "RESUME=UUID=/dev/mapper/cryptswap" | tee /etc/initramfs-tools/conf.d/resume
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
Register these changes.
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
update-initramfs -u -k all
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
### to be solve
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
cryptsetup: ERROR: Couln't resolve device rpool/ROOT/ubuntu_...
|
|
|
|
|
cryptsetup: WARNING: Couln't determine root device
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
## disable encrypt swap partition
|
|
|
|
|
|
|
|
|
|
* Turn off swap
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
swapoff /dev/mapper/cryptswap1
|
|
|
|
|
~~~
|
|
|
|
|
|
2020-06-23 09:56:22 +02:00
|
|
|
* Undo the existing mapping.
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
cryptsetup luksClose /dev/mapper/cryptswap
|
|
|
|
|
~~~
|
|
|
|
|
|
2020-06-23 09:42:29 +02:00
|
|
|
* 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
|
|
|
|
|
~~~
|
|
|
|
|
|
2020-06-23 09:56:22 +02:00
|
|
|
/!\ le point ci-dessous est sans doute inutile
|
|
|
|
|
|
|
|
|
|
* Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to point to your real partition
|
2020-06-23 09:42:29 +02:00
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/nvme0n1p2"
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
update-grub
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
* edit /etc/initramfs-tools/conf.d/resume. Replace the existing RESUME line with the following line.
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
RESUME=/dev/nvme0n1p2
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
Register these changes.
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
update-initramfs -u -k all
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
* make your partition a swap
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
mkswap /dev/nvme0n1p2
|
|
|
|
|
~~~
|
|
|
|
|
|
|
|
|
|
* activate swap
|
|
|
|
|
|
|
|
|
|
~~~
|
|
|
|
|
swapon -a
|
|
|
|
|
~~~
|
