Volume group

[alin_5]

What is the correct procedure to add a volume group on VA7410 ?

[Vincent Fleming]

A VA7410 has 2 volume groups - no more, no less. You can't configure that.

[Uwe Zessin]

Are you both talking about the same thing?

VA7xx0 storage arrays deal with what is called 'redundancy groups'.
When talking about a 'volume group' it is usually a construct at operating system level, although some disk arrays use that term as well.

[alin_5]

I want somethigs like "What is the correct procedure to remove a volume group?"

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000075095108

but for add a volume group

[Uwe Zessin]

Hello Alin,

I'm not a HP-UX administrator, so I can't tell the steps, but I think I have found a useful reference:
http://docs.hp.com/en/5990-8172/ch06s01.html

[Joseph Loo]

hi,

u may like to follow this:

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000063200254

regards.

[Thayanidhi · Accepted solution]

Volume group is nothing to do with VA7xxx.
Once the LUN is created (and assigned) to the host, the host see this LUN as a DISK. Then you have to follow the procedure from OS.

Steps:
Identify the unused disks.
ioscan -fnC disk (list all the disks).
vgdisplay -v (displays used disks).
Please note if the VA is accesses by more than one host you may see all the disks which used by other systems too. It doesn't mean that all are unused.

pvcreate /dev/rdsk/cxtxdx
mkdir /dev/vgxx
mknod /dev/vgxx/group c 64 0xyy0000
(yy is Vg id, unique within the system)
vgcreate /dev/vgxx /dev/dsk/cxtxdx
lvcreate -L -n /dev/vgxx
newfs -F /dev/vgxx/r
mount /dev/vgxx/ /mount_point
Edit /etc/fstab if you need them always.

You can also do from sam if not familier with LVM comands

Regds
TT

[Naveej.K.A]

Alin,

You might have to do a

insf -e

or insf -C disk before the ioscan.

Rest everything looks fine!!!


Regards,
Naveej