topic Hardware path changing for disks in Operating System - HP-UX

Hardware path changing for disks

Coolmar — Mon, 27 Mar 2006 13:43:30 GMT

Hi,

We have a server connected to the SAN. The cables have to be moved around and the disk will all get a new hardware path. I will be able to see the disk with an ioscan, but how can I get all my lv's back? Do I simply do a vgimport? Can someone tell me step by step how to recover after the hardware path changes on the disks. The root disk will be fine...it is the data disks (vg01, vg02, etc).

Re: Hardware path changing for disks

Pete Randall — Mon, 27 Mar 2006 13:47:50 GMT

mv /etc/lvmtab /etc/lvmtab.prev
vgscan -a

I think that ought to find them all.

Pete

Re: Hardware path changing for disks

Prashant Zanwar_4 — Mon, 27 Mar 2006 13:51:40 GMT

Your thinking is right..
you will need to create a map of what is going to change.

Old Paths vs New Paths..
Once you new device names, export volume groups, and import the same with new paths in place..

vxexport -v -p -m -f vgname
vgexport vgname
vgimport -v -m mapfile vgname

You can create outfile for reference..

Regards
Prashant

Re: Hardware path changing for disks

A. Clay Stephenson — Mon, 27 Mar 2006 13:54:46 GMT

You are going to need to do an ioscan -fn and an insf before doing the vgscan otherwise the device nodes will not be available.