topic Re: VGDA value in Operating System - HP-UX

VGDA value

R.K. # — Thu, 21 Aug 2008 08:51:22 GMT

Hi All,

Whats the value of VGDA below refers to?

# vgdisplay -v vg00
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 9
Open LV 9
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 4356
VGDA 2
PE Size (Mbytes) 32
Total PE 4346
Alloc PE 340
Free PE 4006
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

Thanks,
RK

Re: VGDA value

Torsten. — Thu, 21 Aug 2008 08:54:29 GMT

see

man vgdisplay

...
VGDA
Number of Volume Group Descriptor Areas within the volume group.
...

Re: VGDA value

R.K. # — Thu, 21 Aug 2008 09:08:51 GMT

Yes Torsten, thats correct but in some cases I have seen VGDA=6 (for vg00).
Any special resaon for that?

Re: VGDA value

Prashanth Waugh — Thu, 21 Aug 2008 09:24:35 GMT

Hi,

Volume group reserved area (VGRA): created by the vgcreate command and contains the volume group status area (VGSA) and volume group descriptor area (VGDA), which contains device driver information used for the volume group.

Regards
Atul

Re: VGDA value

Torsten. — Thu, 21 Aug 2008 09:32:30 GMT

... you will usually see 2 per PV, a primary and a secondary on each disk.

For a mirrored disk pair the value is usually 4, for a single disk 2.

Re: VGDA value

Torsten. — Thu, 21 Aug 2008 09:32:31 GMT

... you will usually see 2 per PV, a primary and a secondary on each disk.

For a mirrored disk pair the value is usually 4, for a single disk 2.

Re: VGDA value

Torsten. — Thu, 21 Aug 2008 09:52:17 GMT

Please remember this:

http://forums12.itrc.hp.com/service/forums/helptips.do?#33

Have fun!

Re: VGDA value

R.K. # — Thu, 21 Aug 2008 10:01:44 GMT

Thanks agn....