[dm-crypt] Force luksClose

Dennis Birkholz dm-crypt at dennis.birkholz.biz
Thu Oct 25 16:46:18 CEST 2012


Hello,

Am 25.10.2012 12:01, schrieb Milan Broz:
> On 10/23/2012 06:51 AM, Dennis Birkholz wrote:
>> I am using a crypt mapping on a Software-RAID5. As my raid crashed (2 of
>> 5 drives disappeared), I was not able to remove the crypt mapping
>> because the raid device was not accessible any more. It would be nice to
>> have a force option so the mapping is removed and I can stop the
>> degraded raid. The only option was to reboot which is not a very good
>> solution.
> 
> The luksClose / remove should remove mapping if underlying device disappeared.
> 
> But there was some bug related to this - which cryptsetup version you are using?
> 
> Anyway, you can always use "dmsetup remove" and if it fails, "dmsetup remove -f"
> (The second will replace mapping with error target, so you can force detach
> even used device.)

thanks for the information. I am using Debian Stable so it is cryptsetup
1.1.3, maybe I should compile me a more recent version.

Greets,
Dennis


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