VGRA

[andi_1]

Hi guys,

How can I tell if a shared device already has a VGRA?

pvdisplay /dev/dsk/c0t0d0
but should I grep for VGRA?

Thank you.

[harry d brown jr · Accepted solution]

Leon,

try this thread:
http://bizforums.itrc.hp.com/cm/QuestionAnswer/1,,0x44db911284f5d5118ff40090279cd0f9,00.html

live free or die
harry

[Helen French]

Hi Leon,

The VGRA ( Volume group reserved area ) contains: VGDA, VGSA and MCR. By doing a pvdisplay you can find out whether the disk has already got a VGRA or not ?

# pvdisplay /dev/dsk/cxtydz

this will list you the VG details in the disk.

HTH,
Shiju

[Helen French]

Hi,

Check this document for a detailed description about LVM parameters ( find description about VGRA, VGDA, VGSA and MCR ):

http://us-support.external.hp.com/cki/bin/doc.pl/sid=40845475045a04eaf7/screen=ckiDisplayDocument?docId=200000009825655

HTH,
Shiju

[andi_1]

Shiju,

Thank you for the info. Here is what I get when I do pvdisplay:

PV Name /dev/dsk/c0t10d0
VG Name /dev/vg00
PV Status available
Allocatable yes
VGDA 2
Cur LV 0
PE Size (Mbytes) 4
Total PE 1023
Free PE 1023
Allocated PE 0
Stale PE 0
IO Timeout (Seconds) default
Autoswitch On

Do I have VGRA here ?

Thanks again!

[Helen French]

Hi,

Yes you do have a VGRA in this specific disk.

HTH,
Shiju

[harry d brown jr]

Yes:

Volume Group Reserved Area (VGRA)

The volume group reserved area (VGRA) describes the volume group to which the
disk belongs. This information is organized in three subareas: Volume Group
Descriptor Area (VGDA), Volume Group Status Area (VGSA), and the Mirror
Consistency Record.

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=2f746b5102f318f1e3/screen=ckiDisplayDocument?docId=200000009825655

live free or dir
harry