topic Re: NFS mount on cluster lock VG in Operating System - HP-UX

NFS mount on cluster lock VG

daalman — Fri, 14 Apr 2006 09:51:30 GMT

Hello,

Can anyone tell me if there are any risks in defining an NFS mount on a volume group which is also the cluster lock VG?

Thanks !

Shel

Re: NFS mount on cluster lock VG

Victor Fridyev — Fri, 14 Apr 2006 12:50:41 GMT

Hi,

If you build NFS as a package, there is not any risk, otherwise the VG can not be relocked.

HTH

Re: NFS mount on cluster lock VG

Stephen Doud — Mon, 17 Apr 2006 07:03:00 GMT

Serviceguard was designed to use the cluster lock VG for data too, whether it be NFS-mounted or not. It is safe to use the cluster lock VG/PV for data activity.

Re: NFS mount on cluster lock VG

daalman — Tue, 18 Apr 2006 04:18:11 GMT

Thanks for your comments.

Is it necessary to install the NFS toolkit in this case?

Re: NFS mount on cluster lock VG

Kevin Wright — Thu, 20 Apr 2006 13:23:46 GMT

the NFS toolkit should be used anytime you have an NFS enabled package. It is irrelevant to the cluster lock disk.

Re: NFS mount on cluster lock VG

Prashant Zanwar_4 — Thu, 20 Apr 2006 13:30:39 GMT

It has to be a dedicated device for cluster lock, in order to see that this will be claimed first before cluster is formed..

Thanks and regards
Prashant

Re: NFS mount on cluster lock VG

Kent Ostby — Thu, 20 Apr 2006 13:39:55 GMT

In regards to the previous post, it isn't needed for initial formation of the cluster ... only if a reformation is needed while cluster is up and running.

That being said, it doesn't have to be mounted at that time, just physically available.

Re: NFS mount on cluster lock VG

Prashant Zanwar_4 — Thu, 20 Apr 2006 14:01:12 GMT

Agree... Good point..
Thx
Prashant

Re: NFS mount on cluster lock VG

Stephen Doud — Fri, 21 Apr 2006 08:21:35 GMT

The NFS toolkit (B5140BA) provides sufficient functionality to build a mobile NFS Serviceguard package. This helps the system administrator avoid having to code scripts to do the same thing. The admin merely customizes the scripts with site-specific details and then applies the package. It's a time-saver, if you need one, and cheap at twice the price :)

Re: NFS mount on cluster lock VG

John Bigg — Fri, 21 Apr 2006 08:58:49 GMT

The HP NFS toolkit is also the only supported way to implement NFS in a robust fashion. In order to do the same thing manually you would need to edit the package template file generated by cmmakepkg in a way which is not supported by HP. Failure to do this will lead to stale NFS mounts.

Re: NFS mount on cluster lock VG

daalman — Fri, 21 Apr 2006 10:49:34 GMT

Thank you all for your comments !