Today, after decrypting my encrypted drive, the system failed to boot into it.
I forget what the error said. It maybe said that it could not fine new_root or something.
I tried something like the following, by I don’t know what it does.
cryptsetup reencrypt --decrypt --header new_file device_path
I’m not sure what it does and what the --header part does. It was taking too long, so interrupted with a reboot. Now its saying their device is not a valid LUKS device.
I think you might have fucked your data.
when you get an error like on your boot, take a screenshot, write it down, search online, ask for help with the exact error online
when you don’t know what a command does, don’t run it
Afaik the command tried to re-encrypt your drive. If you canceled it, well now you have a drive in some undetermined state and since it was reencrypting it your data is now mumho jumbo.
The --decrypt option is used to remove LUKS encryption entirely and turn the partition into a normal storage volume.
Interrupting that process is still likely to have irreparably damaged the volume, making it impossible to recover.
Still, you’ve got backups, haven’t you?