Increase Distributed Volume Group Size

[Cara Tock]

I have a Volume Group that I need to add space to and it tells me that I need to undistribute it first. These are two new systems running 11.0 and MC/Service Guard. I am new to mcsg so I have not come across this yet. Can anyone tell me what I need to do?

[James R. Ferguson]

Hi Damon:

I'm not exactly clear as to what you want to do, and/or the specific error you are encountering. MC/ServiceGuard adds a few steps to LVM maintenance. Have a look at Technical Knowledge Base document #UXSGLVKBAN00000002 for adding disks to a volume group in an MCSG environment. Look at document #UXSGLVKBAN00000013 for increasing the size of a logical volume and #UXSGLVKBAN00000008 for adding a new logical volume. Does this help?

Regards!

...JRF...

[S.K. Chan]

If you're using SAM to do this, then you should be able to "undistribute" using SAM too, before you increase your VG.
Goto Disks and FileSystems->Volume Groups. Goto Actions menu and select "undustribute".

Check online doc "Managing MC/ServiceGuard", click on left hand bar "Building HA Cluster Configuration" and "Creating a Storage Infrastructure with LVM".
http://docs.hp.com/hpux/onlinedocs/B3936-90065/B3936-90065.html

[Cara Tock]

It sounds like I need to deactivate the volume group, and undistribute it. I would then be able to add space to it and then extend my logical volume. Then I could redistribute it to my other node. It sounds like I need to do a little reading and then I will give it a try and
let you know how it turns out.