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.
Just to give you an update. The other keyslot was the key i added earlier for testing which i removed … So its time for me to copy over a lot of data to another system en recreate the luks volume. Thanks for your help!
@Hercules So it was possible to use one of the other keyslots to open the encryption?
Probably you can test your wanted configuration in a virtual machine with some small virtual drives to avoid any loss of data.
I found it relative difficult to find the correct UUID which had to be used when I setup my system in the past.
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 :/