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Old 11-22-2007, 07:59 AM   #1
neuralnet
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Registered: Aug 2007
Distribution: Ubuntu 7.04 (Feisty)
Posts: 9

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Broken LVM - recovery ? Please Help !


Hi There,

I previously posted my question
here but gave up too easily.. I've done some reading and want to tackle this again, there is 10 years of data there that I have to get back :/ All help gratefully received!

Basically, I had 2 mirror LVMs, one called 'ivor' and one called 'engine' (two 3 x 500gb SATA arrays) which backed up to each-other overnight. I had 2 disks fail simultaneously (both drive 3 of each array). After much poking about and futile attempts to get at the data in the meantime I find the following;

Code:
root@bernards-server:~# vgdisplay
  Couldn't find device with uuid 'McsMZm-0flm-g7Fx-0hBU-8hl8-K6GK-cyJDs5'.
  Couldn't find all physical volumes for volume group engine.
  Couldn't find device with uuid 'McsMZm-0flm-g7Fx-0hBU-8hl8-K6GK-cyJDs5'.
  Couldn't find all physical volumes for volume group engine.
  Volume group "engine" not found
  --- Volume group ---
  VG Name               ivor
  System ID             
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  8
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               931.52 GB
  PE Size               4.00 MB
  Total PE              238468
  Alloc PE / Size       0 / 0   
  Free  PE / Size       238468 / 931.52 GB
  VG UUID               TRGfWh-u5AE-xH7B-n8ko-gij5-1DEQ-QrfauN
but if I run lvdisplay I get;

Code:
root@bernards-server:~# lvdisplay
  Couldn't find device with uuid 'McsMZm-0flm-g7Fx-0hBU-8hl8-K6GK-cyJDs5'.
  Couldn't find all physical volumes for volume group engine.
  Couldn't find device with uuid 'McsMZm-0flm-g7Fx-0hBU-8hl8-K6GK-cyJDs5'.
  Couldn't find all physical volumes for volume group engine.
  Volume group "engine" not found
I didn't set up the arrays but I REALLY need to get the data back as the guy that did is liable to loose a bunch of data. I'm an LVM noob so please be gentle I'm scared that I'm gonna lose the data at the next keystroke so I'd be grateful of some good advice.

The ivor volume group is the right size for an array that lost a disk (i.e. 1gb instead of 1.5gb) so do I just need to recreate the ivor local volume & I should be able to get at the data ? If so, how do I do that ?
 
Old 11-22-2007, 11:32 AM   #2
neuralnet
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Registered: Aug 2007
Distribution: Ubuntu 7.04 (Feisty)
Posts: 9

Original Poster
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Actually

Recovering either 'engine' or 'ivor' should be feasible as long as I can copy the data off either LVM minus 1 disk..
 
Old 11-23-2007, 12:33 AM   #3
shawnbishop
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Registered: Dec 2005
Location: South Africa
Distribution: CentOS,Ubuntu,Fedora
Posts: 249

Rep: Reputation: 30
I would suggest a data recovery specialist, so things are not buggered up.

It doesnt cost much and if the data is that valuable, it will be worth the cost

My statement doesnt help much but I wouldnt mess around and experiment with data I needed to recover
 
Old 01-08-2008, 02:20 PM   #4
emileeapple
LQ Newbie
 
Registered: Jan 2008
Posts: 1

Rep: Reputation: 0
data recovery specialists

I highly recommend Gillware, Inc. for your data recovery needs.

Gillware.com
 
  


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