[linux-lvm] Severe problem: data lost while adding a partition

[Sander Alberink <s.alberink@home.nl>]

Hello all,

I write to you with a rather grave problem. I have a small LVM setup at 
home, consisting of 4 partitions. These were created by the Mandrake 8.2 
  installation system. After deciding to upgrade the system to Mandrake 
9.0, I found out that I had another partition lying around which was 
also prepared for LVM use. I had meant for that disc to use later on in 
  a different scheme for my /usr partition but never got around to do it.
However, during installation I decided to add it to the LVM. The idea 
was that I would extend the FS later (of course, I was not going to 
involve this LVM setup in the rest of the installation, I would do all 
that manually.)

But as you probably guessed, something went horribly wrong during 
install time and my LVM setup is properly hosed. I wanted to re-create 
the setup, but alas: I forgot which was the disk that I added.

The name of the LV (there was only 1) was home, the disks involved were 
/dev/hda1, /dev/hda[4-6].

Output of pvscan:
----------------------------------------------------------------------
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- walking through all physical volumes found
pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part1"  is 
associated to an unknown VG (run vgscan)
pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part4"  is 
associated to an unknown VG (run vgscan)
pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part5"  is 
associated to an unknown VG (run vgscan)
pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part6"  is 
associated to an unknown VG (run vgscan)
pvscan -- inactive PV "/dev/ide/host0/bus0/target0/lun0/part7"  is 
associated to an unknown VG (run vgscan)
pvscan -- total: 5 [1.97 GB] / in use: 5 [1.97 GB] / in no VG: 0 [0]

-----------------------------------------------------------------------

output of vgscan:
-----------------------------------------------------------------------
vgscan -- reading all physical volumes (this may take a while...)
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume 
group

-----------------------------------------------------------------------

output of pvdisplay /dev/hda1 (this partition belonged to the LV for sure)
-----------------------------------------------------------------------
pvdisplay -- getting physical volume size
--- Physical volume ---
PV Name               /dev/ide/host0/bus0/target0/lun0/part1
VG Name               home
PV Size               399.62 MB / NOT usable 3.62 MB [LVM: 121.00 KB]
PV#                   1
PV Status             NOT available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       4096
Total PE              99
Free PE               0
Allocated PE          99
PV UUID               NCf9U6-nqVy-zn3K-upFo-S0PB-SFqb-o2ERjs
-----------------------------------------------------------------------

If you need any further information, please let me know!
I do hope you can help me with this, since I stand to loose a lot of 
personal data, of which exists no backup (of course, you guys probably 
hear this all the time).

Best regards,

Sander Alberink