Btrfs: Difference between revisions
imported>Raboof →Format partitions and create subvolumes: document you need btrfs-progs for mkfs.btrfs |
imported>Ryan4yin restore root subvolume via boot.initrd.postDeviceCommands |
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| Line 221: | Line 221: | ||
# Take an empty *readonly* snapshot of the root subvolume, which can be rollback to on every boot. | # Take an empty *readonly* snapshot of the root subvolume, which can be rollback to on every boot. | ||
btrfs subvolume snapshot -r /mnt/root /mnt/root-blank | btrfs subvolume snapshot -r /mnt/root /mnt/root-blank | ||
</syntaxhighlight> | |||
Add the following nix config to clear the root volume on every boot([https://grahamc.com/blog/erase-your-darlings/ Erase your darlings]): | |||
<syntaxhighlight lang="nix"> | |||
{ | |||
boot.initrd.postDeviceCommands = lib.mkAfter '' | |||
mkdir /mnt | |||
mount -t btrfs /dev/mapper/enc /mnt | |||
btrfs subvolume delete /mnt/root | |||
btrfs subvolume snapshot /mnt/root-blank /mnt/root | |||
''; | |||
} | |||
</syntaxhighlight> | </syntaxhighlight> | ||