Re: [dm-crypt] Is my LUKS header corrupted?

[Arno Wagner <arno@wagner.name>]

On Wed, Apr 24, 2019 at 14:14:43 CEST, Michael Kjörling wrote:
> On 24 Apr 2019 14:08 +0200, from arno@wagner.name (Arno Wagner):
> > 2. would indicate a corrupt header, but 1. is really strange.
> > Unless Kubuntu has done something they really should not do,
> > namely adding their own passphrase checksum, I have no idea
> > how that behavior could happen.
> 
> 1. would seems to me to *possibly* indicate a corrupted file system.
> Running a *read-only* fsck from within that emergency mode shell may
> be advised, just to see if there's significant metadata damage within
> the container. Also check how the file system is mounted when the
> system drops into emergency mode; read-only or read/write.

Makes sense to me. 2. may be due to keymap or locale problems,
especially when the test was done in that emergency shell. In 
that case, the LUKS header may well be fine and the filesystem 
within the LUKS container may be damaged instead. And that can
happen on a hard power-off.

Arno


> 
> -- 
> Michael Kjörling • https://michael.kjorling.se • michael@kjorling.se
>   “The most dangerous thought that you can have as a creative person
>               is to think you know what you’re doing.” (Bret Victor)
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-- 
Arno Wagner,     Dr. sc. techn., Dipl. Inform.,    Email: arno@wagner.name
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