topic Re: PVG names in Operating System - HP-UX

PVG names

Sergejs Svitnevs — Mon, 10 Jan 2005 03:03:21 GMT

Hi,

We use physical volume groups for mirroring of individual disks.
The volume group was created with the following commands:
# vgcreate -g /dev/vgdb /dev/dsk/c1tXdY
# vgextend -g /dev/vgdb /dev/dsk/c0tXdY

I need to find the names of a different physical volume group. Is it possible?
How to display the names of all active PVGs ( and )?

Sergej

Re: PVG names

Duncan Edmonstone — Mon, 10 Jan 2005 03:19:51 GMT

Serge,

vgdisplay -v /dev/vgdb

will show you the names of the PVGs.

Alternatively look in the file /etc/lvmpvg

HTH

Duncan

Re: PVG names

Sergejs Svitnevs — Mon, 10 Jan 2005 03:53:44 GMT

"vgdisplay -v" shows:
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

But I'm sure that the volume group consists of 2 different PVG.

Also "lvdisplay /dev/vgdb/lvol1" shows:
--- Logical volumes ---
LV Name /dev/vgdb/lvol1
VG Name /dev/vgdb
LV Permission read/write
LV Status available/syncd
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) X
Current LE Y
Allocated PE Z
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation PVG-strict
IO Timeout (Seconds) default

Re: PVG names

Thierry Poels_1 — Mon, 10 Jan 2005 03:57:45 GMT

hi,

maybe it doesn't ;)

have a look at /etc/lvmpvg!

"Allocation PVG-strict" in a lvdisplay does not mean you have PVG's configured.

regards,
Thierry.

Re: PVG names

Sergejs Svitnevs — Mon, 10 Jan 2005 04:09:21 GMT

/etc/lvmpvg doesn't exist....

Re: PVG names

Thierry Poels_1 — Mon, 10 Jan 2005 04:14:53 GMT

hi,

no /etc/lvmpg --> no Physical Volume Groups defined

regards,
Thierry.

Re: PVG names

Sergejs Svitnevs — Mon, 10 Jan 2005 04:39:00 GMT

I 've found /etc/lvmpvg on the standby cluster node. Do I need to copy this file to the primary node?

Why "vgdisplay -v" doesn't show info about PVG if lvmpvg file doesn't exist?

Sergej

Re: PVG names

Duncan Edmonstone — Mon, 10 Jan 2005 04:49:58 GMT

if the disks on both nodes have the same device name (c2t3d0 on nodeA is the same disk as c2t3d0 on nodeB), then you can just copy the lvmpvg file over. If the device names on the 2nd host are different, you will need to transpose the entries to the correct names on the other host.

No PVG won't show or function correctly without /etc/lvmpvg. This (usually) won't make any difference during normal operation, but you would probably have run into problems if trying make changes to LVM on the node without the file.

HTH

Duncan

Re: PVG names

Sergejs Svitnevs — Mon, 10 Jan 2005 05:21:06 GMT

Thanks a lot.