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Re: [linux-lvm] cannot access LVM1 any more



Hello, there,


I still need help regarding this topic. Do you need some more information? Then please tell me.

In the meantime the system has been reinstalled, but a clone copy of the old system exists. I am trying to rescue the old data. When working on this I found a vgcfgbackup-file with valid-looking data. It begins with

---
# Generated by LVM2: <Date>

contents = "Text Format Volume Group"
version = 1
---

When trying "vgcfgrestore -f </above/described/file> volg1" on a Knoppix 5.0.1 with LVM version 2.02.05 (Details at the end of quoted posting) I get

PV /dev/hde2 is a different format (seqno lvm1)
Restore failed.

What can I do to get my data back?


Thanks

Paul


Paul Muster wrote:
Hello everybody,


I have a really big problem: I cannot access my LVM1 PVs, VGs an LVs any more. So the system does not boot up.

The system was installed with Debian Woody and LVM1. I created 1 PV, 1 VG and some LVs. Later (maybe when changing to Sarge or Etch) I moved to LVM2, so I thought, I could remove the package lvm10 from the system. At some time I added another PV to the VG, resized one of the LVs.

Maybe because of one of this or when changing from Kernel 2.4 to 2.6.18 I obviously lost support for LVM1.

The last messages from the running system were:

# vgdisplay Invalid LV in extent map (PV /dev/sda3, PE 1080, LV 5, LE 0) Couldn't fill logical volume maps. Invalid LV in extent map (PV /dev/sda3, PE 1080, LV 5, LE 0) Couldn't fill logical volume maps. Volume group "volg1" not found

As said before, after a reboot the system did not come up again telling me, it cannot find the LVs.


Please help me as I need the system and don't want to reinstall it. If you need some more information, please drop me a mail.


Maybe there is a live-CD with old LVM1-support available with which I could boot, activate the old LVM, chroot to it and reinstall the lvm10-Package? (I would need the module megaraid since the PVs are on an hardware-RAID.)


Thanks a lot in advance.

Paul


Some details:

# fdisk -l /dev/sda Disk /dev/sda: 73.4 GB, 73410805760 bytes 254 heads, 63 sectors/track, 8960 cylinders Units = cylinders of 16002 * 512 = 8193024 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 244 1952212+ 83 Linux /dev/sda2 245 4485 33932241 8e Linux LVM /dev/sda3 4486 8960 35804475 8e Linux LVM There are two PVs, because some time the 36GB disk was replaced by a 7GB one. # pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name volg1 PV Size 32,36 GB / not usable 48,95 MB Allocatable yes (but full) PE Size (KByte) 32768 Total PE 1034 Free PE 0 Allocated PE 1034 PV UUID O17ru0-C8v2-3iLh-6isM-Z3n5-mn41-6nhDky --- Physical volume --- PV Name /dev/sda3 VG Name volg1 PV Size 34,15 GB / not usable 53,31 MB Allocatable yes PE Size (KByte) 32768 Total PE 1091 Free PE 11 Allocated PE 1080 PV UUID pe1zVS-YN39-Rw1k-Esfg-WIdG-cl5h-OhDZmF One VolumeGroup on the PVs: # vgdisplay --- Volume group --- VG Name volg1 System ID Knoppix1091952233 Format lvm1 VG Access read/write VG Status resizable MAX LV 256 Cur LV 5 Open LV 5 Max PV 256 Cur PV 2 Act PV 2 VG Size 66,41 GB PE Size 32,00 MB Total PE 2125 Alloc PE / Size 2114 / 66,06 GB Free PE / Size 11 / 352,00 MB VG UUID J75sG2-mUcD-aUet-g4EV-y3AS-UNfb-2LRwhj with some LVs inside: # lvdisplay --- Logical volume --- LV Name /dev/volg1/logv1 VG Name volg1 LV UUID 000000-0000-0000-0000-0000-0000-000000 LV Write Access read/write LV Status available # open 1 LV Size 1,97 GB Current LE 63 Segments 1 Allocation normal Read ahead sectors 1024 Block device 254:0 [...]

And from another posting:

# pvscan --version
  LVM version:     2.02.05 (2006-04-21)
  Library version: 1.02.05 (2006-04-19)
  Driver version:  4.6.0

also only tells:

# pvscan
  Invalid LV in extent map (PV /dev/sda3, PE 1080, LV 5, LE 0)
  Couldn't fill logical volume maps.
  Invalid LV in extent map (PV /dev/sda3, PE 1080, LV 5, LE 0)
  Couldn't fill logical volume maps.
  No matching physical volumes found



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