[linux-lvm] How to repair superblock is corrupt

[Gionatan Danti]

Il 2020-05-28 09:35 lampahome ha scritto:
> I create a vg1 on one SSD and create a lv1 in vg1.
> Then I run:
> sudo thin_check /dev/mapper/vg1-lv1
> 
> It shows:
> examining superblock
>   superblock is corrupt
>     bad checksum in superblock
> 
> Can someone teach me how to fix corrupted superblock?

Hi, thin_check should be run against the metadata device (more 
precisely, against a snapshot of the metadata device).

I suggest you reading thin_check/thin_dump man pages: 
https://www.systutorials.com/docs/linux/man/8-thin_check/

Regards.

-- 
Danti Gionatan
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