Re: [linux-lvm] LVM data recovery ?

["Miguel Bettencourt Dias (Netopia)" <mbd@netopia.pt>]

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Hi, thanks for your feedback.

Unfortunately I get a metadata checksum error. Would there be a way to 
recreate the metadata, telling it the number of "partitions" and the 
size of both ? Just like I could with fdisk... without "touching" the 
underlying reiserfs ?


regards,
miguel dias

Tom Callahan wrote:
>
> You may be able to mount the LVM LV's on another system....
>
> I'd take some dd backups just in case, and then try attaching the 
> drives to another system.
>
> pvscan to see if it finds the PV's
> then vgscan to find the VG's
>
> vgchange -a y will then activate them...but be careful. If the same 
> VG/LV names are present on the new system, you'll have to use some 
> renaming trickery to get them to actually show up.
>
> Thanks,
>
> Tom Callahan
> TESSCO Technologies
> Desk: (410)-229-1361
> Cell: (410)-588-7605
> Email: callahant@tessco.com
>
> A real engineer only resorts to documentation when the keyboard dents 
> on the forehead get too noticeable.
>
>
>
> Miguel Bettencourt Dias (Netopia) wrote:
>
>>
>> Hi All,
>>
>> I've been reading the arquives and didn't find an answer to my 
>> problem and I was wondering how data recovery could be done... 
>> because I have a server that crashed quite badly. It did not have lvm 
>> backups from /etc/lvm/archive/ and I wanted to recover the LVM.
>>
>> I only have two partitions, sda1 and sda2.
>> sda1 is the /boot. sda2 is LVM, with swap and / (the machine runs 
>> fedora core 4)with root inside the LVM... now I know that's a bad ideia.
>>
>> The problem is that I don't have any backups of any LVM information and
>> all I know is the size of the partitions inside LVM...
>>
>> Adding 2031608k swap on /dev/VolGroup00/LogVol01.  Priority:-1 
>> extents:1 across:2031608k
>>
>> Filesystem           1K-blocks      Used Available Use% Mounted on
>> /dev/mapper/VolGroup00-LogVol00
>>                       32963596  24207464   8756132  74% /
>> /dev/sda1               101086     56597     39270  60% /boot
>> /dev/shm               1037328         0   1037328   0% /dev/shm
>>
>>
>> can I conceivably recover the data ? how ?
>>
>>
>> regards,
>> miguel dias
>>
>>
>>
>> _______________________________________________
>> linux-lvm mailing list
>> linux-lvm@redhat.com
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/


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