[linux-lvm] cannot access LVM1 any more
Paul Muster
paul.muster at gmx.net
Sat Oct 20 16:01:03 UTC 2007
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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