Re: Device to use with cryptsetup Buster encrypted lvm
On Sun 04 Oct 2020 at 16:16:33 (+0200), john doe wrote:
> I just installed Debian Buster with encrypted LVM.
>
> In my fstab file, I have:
> # <file system> <mount point> <type> <options> <dump> <pass>
> /dev/mapper/try02--vg-root / ext4 errors=remount-ro 0
> 1
>
> I can't figure out what device I should pass to cryptsetup to avoid the
> below error:
>
> $ cryptsetup -v luksAddKey /dev/mapper/try02--vg-root /etc/keys/root.key
> --key-slot=1
> Device /dev/mapper/try02--vg-root doesn't exist or access denied.
> Command failed with code -4 (wrong device or file specified).
>
>
> How can I know what device cryptsetupt will accept?
It looks as if you're trying to add the key to the decrypted device,
ie the /dev/mapper/ device that gets mounted as /.
You add keys to the encrypted device, ie the device that contains the
encrypted filesystem, the argument you used in the command
# cryptsetup luksFormat <this-device>
Cheers,
David.
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