[linux-lvm] Logical Volume on two disk, one is broken: how to restore data from the good disk?

[Marco Antonelli]

Thank you Jim, I'll try your suggestions; I'll let you now what will happen.
Bye,
Marco

2007/7/11, Jim Schatzman <james.schatzman at futurelabusa.com>:
>  From me the amateur. You appear to have lost some data. You probably have some files that are recoverable. You have a few choices:
>
> 1) Send your disks to a professional. See http://myharddrivedied.com, for example.
>
> 2) Replace the electronics PC board on your drive. See the same above website for more info on that. This might recover all your data. It also may make no change.
>
> 3) Use dmsetup to enable a partial VG (use vgchange -Pay as explained in the article). See
> http://e2salvage.sourceforge.net/florian2.html
> Retrieve what files you can.
>
> You can also remove the bad drive entirely and do a partial VG.
>
> 4) Use dd ignoring errors to do a raw copy off the bad drive to an identical good drive.
> Use vgcfgbackup. Remove the bad drive. Install the new drive.
>
> Edit the vgcfg backup, edit the id in the logical_volumes
> sections, check your work carefully, and vgcfgrestore
>
> as mentioned by Ryan Nelson.  This is probably going to get you about what #3 does.
>
> Good luck-
>
> Jim
>