Hi fellow selfhoster,
Im a bit lost on the following scenario and im unable to find any documentation about it so i was hoping some smart people here could point me in the right direction.
I have a linux software raid 6 that contains a LUKS partition with ext4 in it. I would like to automount the ext4 when im rebooting. The root partition is also using LUKS and i have successfully setup the decryption for this parition but im uncertain on how to do this with this raid setup since im not sure where in the boot process linux recognizes my raid and when the decryption happens.
This is what i have:
[root@nfs-rocky-1 ~]# cat /etc/mdadm.conf
ARRAY /dev/md/server1:0 metadata=1.2 UUID=3e198408:2236ed3d:1dc13a8e:e5f91e52
On a reboot the raid does get automaticly recognizes but i still have to do cryptsetup luksOpen /dev/md0 raid & mount /dev/mapper/raid /mnt/data.
What would be the best way to do this? Im a bit scared of doing this im not certain of since i don’t want my machine to be stuck at a boot.
Just a like to an article that dicusses something like this already would help me greatly.
No it wasn’t. Luckely the luks parition was still mounted on my system so im making a backup, recreating the partiiton and the restoring …
I found an article from RedHat on how to restore a luks1 partitions keys while it is still mounted but this isn’t possible with luks2 :/
@Hercules That was really luck. I hope, that your backup will be successful.
Until now I didn’t used it, but probably I will also have a deeper look into luksHeaderBackup.
https://man.archlinux.org/man/cryptsetup-luksHeaderBackup.8.en
https://man.archlinux.org/man/cryptsetup-luksHeaderRestore.8.en