topic Re: Disk issue in vxvm in Operating System - HP-UX

Disk issue in vxvm

shikhar_1 — Sat, 28 Jan 2012 18:55:49 GMT

I have checked one disk c38t0d0 and found it not the part of any dg although it showing different dg name from different node.

See the below o/p:

# hasys -list

ebzdbd01

ebzdbd04

ebzdbd05

ebzdbd01:> vxdisk -o alldgs list | grep -i c38t0d0

c38t0d0 simple - (etqdg) online <-- Here it is showing the disk is the part of dg etqdg)

# uname -a

HP-UX ebzdbd01 B.11.11 U 9000/800 187961547 unlimited-user license

Logged in to ebzdbd05 as this dg etqdg is a part of this server

ebzdbd05:>vxdg list | grep -i etqdg

etqdg enabled 1119550671.2305.ebzdbd04

ebzdbd05:>vxprint -g etqdg -hrt | grep -i dm | grep c38t0d0 <--- No o/p

Now from this node it is showing different dg name for this disk:

ebzdbd05:>vxdisk -o alldgs list | grep -i c38t0d0

c38t0d0 simple - (r2mddg) online <- Different dg is showing and this dg is the part of server ebzdbd01

Again logged into ebzdbd01 Server

# vxdg list | grep -i r2mddg
r2mddg enabled 1123771674.2371.ebzdbd04

ebzdbd01:> vxprint -g r2mddg -hrt | grep -i dm | grep -i c38t0d0

I am getting the errors for this disk "c38t0d0" as below

Following available links are either not configured
or disabled

Re: Disk issue in vxvm

shikhar_1 — Sat, 28 Jan 2012 19:07:59 GMT

More Information about the disk

=========================

vxdisk -s c38t0d0

Disk:   c38t0d0
type:   simple
flags: online ready private autoconfig noautoimport
diskid: 1211285170.3076.ebzdbd05
dgname: etqdg
dgid:   1119550671.2305.ebzdbd04
hostid: ebzdbd05
info:

My query is that if this disk is not the part of any dg then how it is showing the part of two dgs showing from different node.

Re: Disk issue in vxvm

shikhar_1 — Sat, 28 Jan 2012 19:55:57 GMT

I think to resolve this issue we have remove the disk from VXVM and then readded to vxvm

vxdisk rm c38t0d0

vxdisksetup -i c38t0d0

Anyone pls suggest on this.

Re: Disk issue in vxvm

Duncan Edmonstone — Mon, 30 Jan 2012 07:40:13 GMT

I know next to nothing about VxVM, as I find it stupidly complex for what should be reasonably simple volume operations - I'm sure it has its place, but not for most of what I want to do.

That said, one thing I _do_ know is that there is no rule that says 2 disk devices should have the same device special files on two different hosts (as seen through "ioscan -fnCdisk" for example) - i.e. what appears as c38t0d0 on one host doesn't have to be c38t0d0 on another host.

So are you sure this is really a different disk, and not just the same disk with a different DSF? Easiest way to check is to use whatever utility came with your SAN storage array to identify the LUNs uniquely (something like xpinfo, evainfo, syminq etc...) so what sort of disk array do you have here?

Re: Disk issue in vxvm

shikhar_1 — Mon, 30 Jan 2012 09:38:43 GMT

Hi,

Here we are using XP arrays. I hve checked the disks it is same and interesting thing is that it is showing different dg name from different node and once we check the disk for the dg it is not showing at all..