[linux-lvm] vgscan cant find my vg

[linux-lvm] vgscan cant find my vg

[Rene Schumann]

Hello!

I have a volumegroup with name vg01 (sda1,sda2) since long time wich hold all 
my userdata.
Since yesterday my OS cant find this vg anymore.
I remember the last thing was i did add hda9 to vg01.
I did this while installing Mandrake9.0 for testing.
I couldnt find a error from LVM but vgscan fails to find my vg.
Laterly i created a second Volumegroup with name vg (hda9) but vg01 still not 
working.
I also did a vgcfgrestore of vg01 from a 2 weeks old backup but it changes 
nothing. 
It would be hard for me if i loose my data.
Can someone please help me?

[root@desktop rene]# pvdata /dev/sda1 | head -n 45
--- Physical volume ---
PV Name               /dev/sda1
VG Name               vg01
PV Size               34.18 GB / NOT usable 4.96 MB [LVM: 158.00 KB]
PV#                   2
PV Status             available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       4096
Total PE              8749
Free PE               0
Allocated PE          8749
PV UUID               qb35Q0-7Jd6-4c6X-3hgZ-VSGU-B9cd-uPL3VO

--- Volume group ---
VG Name
VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                255
Cur LV                5
Open LV               0
MAX LV Size           255.99 GB
Max PV                255
Cur PV                2
Act PV                2
VG Size               74.52 GB
PE Size               4.00 MB
Total PE              19078
Alloc PE / Size       17864 / 69.78 GB
Free  PE / Size       1214 / 4.74 GB
VG UUID               V4Gc4e-80dY-HT04-lZ03-QfI1-X45j-QwSRmn

--- List of logical volumes ---

pvdata -- logical volume "/dev/vg01/usr" at offset   0
pvdata -- logical volume "/dev/vg01/swap" at offset   1
pvdata -- logical volume "/dev/vg01/share" at offset   2
pvdata -- logical volume "/dev/vg01/home" at offset   3
pvdata -- logical volume "/dev/vg01/var" at offset   4
pvdata -- logical volume struct at offset   5 is empty
pvdata -- logical volume struct at offset   6 is empty
pvdata -- logical volume struct at offset   7 is empty
pvdata -- logical volume struct at offset   8 is empty
pvdata -- logical volume struct at offset   9 is empty




[root@desktop rene]# pvdata /dev/sda2 | head -n 45
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg01
PV Size               40.35 GB / NOT usable 7.45 MB [LVM: 164.00 KB]
PV#                   1
PV Status             available
Allocatable           yes
Cur LV                5
PE Size (KByte)       4096
Total PE              10329
Free PE               1214
Allocated PE          9115
PV UUID               lRD1KV-Irwg-2wtl-OwDG-xDv9-WBP0-hhLYjb

--- Volume group ---
VG Name
VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                255
Cur LV                5
Open LV               0
MAX LV Size           255.99 GB
Max PV                255
Cur PV                2
Act PV                2
VG Size               74.52 GB
PE Size               4.00 MB
Total PE              19078
Alloc PE / Size       17864 / 69.78 GB
Free  PE / Size       1214 / 4.74 GB
VG UUID               V4Gc4e-80dY-HT04-lZ03-QfI1-X45j-QwSRmn

--- List of logical volumes ---

pvdata -- logical volume "/dev/vg01/usr" at offset   0
pvdata -- logical volume "/dev/vg01/swap" at offset   1
pvdata -- logical volume "/dev/vg01/share" at offset   2
pvdata -- logical volume "/dev/vg01/home" at offset   3
pvdata -- logical volume "/dev/vg01/var" at offset   4
pvdata -- logical volume struct at offset   5 is empty
pvdata -- logical volume struct at offset   6 is empty
pvdata -- logical volume struct at offset   7 is empty
pvdata -- logical volume struct at offset   8 is empty
pvdata -- logical volume struct at offset   9 is empty



[root@desktop rene]# pvscan
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- inactive PV "/dev/scsi/host0/bus0/target0/lun0/part1"  is associated 
to an unknown VG (run vgscan)
pvscan -- inactive PV "/dev/scsi/host0/bus0/target0/lun0/part2"  is associated 
to an unknown VG (run vgscan)
pvscan -- ACTIVE   PV "/dev/ide/host0/bus0/target0/lun0/part9"  of VG "vg"   
[28.51 GB / 28.51 GB free]
pvscan -- total: 3 [103.05 GB] / in use: 3 [103.05 GB] / in no VG: 0 [0]


[root@desktop rene]# vgscan
vgscan -- reading all physical volumes (this may take a while...)
vgscan -- found active volume group "vg"
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume group

Re: [linux-lvm] vgscan cant find my vg

[Andreas Baier]

Hi Rene,

I had such a situation some time ago, too.
I had 2 scsi disks and a scsi-only kernel, with ide just as a loadable 
module. I added an ide disk to the running vg and all was ok until I 
rebooted. When booting up, my system lacked the ide-module so the hole 
vg was not recognized by the kernel.
Then I had two possibilities: compiling a new kernel with the ide-disk 
compiled into, or building a new initrd with the ide-module. Now the 
system is up perfectly well.

Rene Schumann wrote:

> Hello!
> 
> I have a volumegroup with name vg01 (sda1,sda2) since long time wich hold all 
> my userdata.
> Since yesterday my OS cant find this vg anymore.
> I remember the last thing was i did add hda9 to vg01.
> I did this while installing Mandrake9.0 for testing.
> I couldnt find a error from LVM but vgscan fails to find my vg.
> Laterly i created a second Volumegroup with name vg (hda9) but vg01 still not 
> working.



Best regards

Andreas

[linux-lvm] vgscan cant find my vg

[Rene Schumann]

Hello!

Thanks for your help.
A missing Modul is not my problem.
I do not have a scsi only Kernel and both, Mandrake inst. kernel and my normal 
Kernel are standard Mandrake Kernels with all Moduls.
Vgscan still fails to find my vg01
Can someone please tell me how i can safe my data?
thx



--------------------------------
Hi Rene,

I had such a situation some time ago, too.
I had 2 scsi disks and a scsi-only kernel, with ide just as a loadable 
module. I added an ide disk to the running vg and all was ok until I 
rebooted. When booting up, my system lacked the ide-module so the hole 
vg was not recognized by the kernel.
Then I had two possibilities: compiling a new kernel with the ide-disk 
compiled into, or building a new initrd with the ide-module. Now the 
system is up perfectly well.