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Old 02-25-2006, 06:19 AM   #1
kpachopoulos
Member
 
Registered: Feb 2004
Location: Athens, Greece
Distribution: Gentoo,FreeBSD, Debian
Posts: 705

Rep: Reputation: 30
reuse lvm partitions after format


Hi,
I had created some lvm partitions in hdb. Now i have formatted hda and of course all the confs and entries in /dev have disappeared- the whole OS installation is included here, hdb is just an extra storage. With "lvdisplay", i
can see these:
Code:
vakhos:~/xen-3.0.1-install# lvdisplay
  Incorrect metadata area header checksum
  Incorrect metadata area header checksum
  --- Logical volume ---
  LV Name                /dev/dias/root
  VG Name                dias
  LV UUID                VdwyU0-Ju1Q-IZo2-PdEV-5iqK-xrwC-zsSbKx
  LV Write Access        read/write
  LV Status              NOT available
  LV Size                5.37 GB
  Current LE             1375
  Segments               2
  Allocation             inherit
  Read ahead sectors     0

  --- Logical volume ---
  LV Name                /dev/dias/swap
  VG Name                dias
  LV UUID                MGpZz8-h0i8-cCXm-yBBW-X370-3roA-UeD46a
  LV Write Access        read/write
  LV Status              NOT available
  LV Size                512.00 MB
  Current LE             128
  Segments               1
  Allocation             inherit
  Read ahead sectors     0

  --- Logical volume ---
  LV Name                /dev/poseidon/root
  VG Name                poseidon
  LV UUID                FM4b2A-m6XS-wdbk-352d-6J6m-OmZc-EBVTXI
  LV Write Access        read/write
  LV Status              NOT available
  LV Size                5.86 GB
  Current LE             1500
  Segments               2
  Allocation             inherit
  Read ahead sectors     0

  --- Logical volume ---
  LV Name                /dev/poseidon/swap
  VG Name                poseidon
  LV UUID                yAmubo-b2ns-7nzN-q1sn-f5xR-FaHv-lC53pE
  LV Write Access        read/write
  LV Status              NOT available
  LV Size                512.00 MB
  Current LE             128
  Segments               2
  Allocation             inherit
  Read ahead sectors     0
Can i restore the "lvm system"? Of course /dev doesn't contain any volume group entries and trying to recreate the volume group entries with vgcreate returns an error.
Code:
vakhos:~/xen-3.0.1-install# vgcreate poseidon /dev/hdb5 /dev/hdb6
  Incorrect metadata area header checksum
  Incorrect metadata area header checksum
  A volume group called 'poseidon' already exists.
Thanks

Last edited by kpachopoulos; 02-25-2006 at 06:21 AM.
 
Old 02-25-2006, 09:26 AM   #2
haertig
Senior Member
 
Registered: Nov 2004
Distribution: Debian, Ubuntu, LinuxMint, Slackware, SysrescueCD, Raspbian, Arch
Posts: 2,331

Rep: Reputation: 357Reputation: 357Reputation: 357Reputation: 357
Try this:
Code:
# vgscan
# vgchange -a y
Hopefully after this, vgdisplay will show you your volumes and you'll see volume group entries under /dev
 
  


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