Re: [linux-lvm] LVM Woes (hope this isn't a repeat. sorry)

[go0ogl3 <go0ogl3@gmail.com>]

Hello!

  I'm new at lvm but maybe Windows just overwrited the first 512 bytes
of that disk. Try dd_rescue or search the list arhive you'll find some
similar situation (oliver with a hex editor).

I hope you'll make it!

On Sun, 13 Mar 2005 19:48:47 -0500, Andrew <andy_b@softhome.net> wrote:
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> My problem is that I accidentally left my LVM disks in my system when I
> installed windows XP On a seperate drive.  I did not install windows to
> either of the LVM's so that should not be an issue.
> 
> However when I replaced my linux drive, and booted into linux, I got the
> following error when my system tried to start up LVM
> (for vgchange -ay)
> mog root # vgchange -ay
> 2 logical volume(s) in volume group "vg0" now active
> Logical volume (lv0) contains an incomplete mapping table
> Unable to find volume group "vg_samsung"
> 
> vg0 is my other lvm which thankfully is still there.
> 
> now, whenever I do any of the 'scan' tools (vgscan, pvscan, lvscan) I get the
> following errors:
> vgscan:
> ...
> Logical volume (lv0) contains an incomplete mapping table
> Unable to find volume group "vg_samsung"
> 
> pvscan:
> Logical volume (lv0) contains an incomplete mapping table
> ...
> 
> lvscan:
> ...
> Logical volume (lv0) contains an incomplete mapping table
> Unable to find volume group "vg_samsung"
> 
> however, if I do pvdisplay on my 2 drives I get some info
> mog root # pvdisplay /dev/hde     <--my 160gig drive, I think the second drive
> in the LVM
> 
> - --- NEW Physical volume ---
> PV Name         /dev/hde
> VG Name         /vg_samsung
> PV Size         19.84 MB
> Allocatable     NO
> PE Size (K..)   0
> Total PE                0
> Free PE         0
> Allocated PE    0
> PV UUID         fXhdbW-S1KK-lSNs-kGSQ-dsb6-9Kkn-Q7xeTk
> 
> That looks bad to me, but the first drive in the volume looks ok:
> 
> mog root # pvdisplay /dev/hdg <--my 80gig drive
> - --- Physical volume ---
> PV Name         /dev/hdg
> VG Name         /vg_samsung
> PV Size         74.56 GB / not usable 31.57 MB
> Allocatable     yes (but full)
> PE Size (K..)   16384
> Total PE                4770
> Free PE         0
> Allocated PE    4770
> PV UUID         aE0Tfs-UX8r-oTma-Eo35-mxSg-ZT5w-ZHPPTW
> 
> so it looks like windows only blasted the second of the two drives  (which
> came first in the bios) (or the
> first one it found?)
> 
> I am desperate to get this data back (and unfortunately my /etc/lvm/backup or
> archive are empty :(
> 
> Thankyou very much in advance!
> - --
> 
> - --Andrew Bovill
> PGP fingerprint:  A00A 1E75 3AB0 610E 2300  6855 1890 C61E E590 F777
> Link to PGP key:  http://linuxboy.dyndns.org/~andy/public_key.gpg
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> =bymV
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