Problem with VG and LVG

[qamar_2]

Hello All,

With reference to my earlier mail , Now I have decided to recreate volume groups and restore data from the backup.When I crate a volume group, it gives the error "A volume group is already using this major and minor number".

pls help me...

Best Regards,

Qamar Khan

[Bill McNAMARA_1]

man lvm

or

http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0xff7b87dc4d7dd5118ff00090279cd0f9,00.html

http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0xd49c663ce855d511abcd0090277a778c,00.html

http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x43bf53921f1ad5118fef0090279cd0f9,00.html

Good luck
Bill

[A. Clay Stephenson]

Hi qamar:

If you want to do that you will need to a vgexport on each volume group other that vg00.

e.g. vgexport /dev/vg01

But before you restore from backup you really need to figure out what is going on or it will happen again at the next reboot. You need to fix the problem not the symptom. If you can't do a vhange it's time to do the vgscan - you will be no worse off.

Clay

[Sachin Soni_1]

you can try creating Vg's by using another major and mnor no..man specify different no. in mknod command when u r creating group file.
thats all!!!

[Carsten Krege]

The problem is that there are still LVM structures of this VG resident in the memory. There are two workarounds:

- reboot and retry
- use a new minor number for the group device file

mknod /dev/vgXX/group c 64 0xYY0000

where YY a free minor number in the range 00 .. 09 (or even higher if the kernel parameter maxvgs (default=10) has been increased).


Carsten