VxVM data migration

[scoooot]

I need some assistance with VxVM. I've been working with HPUX for 20 years but have not had the pleasure of working all that extensively with Veritas.

I have a SG cluster, RAC, 2 nodes. And I am moving all the data to a different EVA. The shared disk is all VxVM which is where my uses is. The LVM volumes I have mirrored across and is all good.

Rather than mirroring the VxVM volumes, which I should do except I’m not that adventurous, I have decided to just CA the data across.

If it was LVM I would vgexport and then import and done. Simple stuff. But....

The majority of my MCSG cluster is Veritas and I'm not as savvy with this stuff. I'm sure it's a few commands, very similar to LVM, but I'm a little reluctant.

If someone could point me in the right direction and help me to minimize my downtime, that would be very much appreciated.

Thank you.

[Mel Burslan]

I could not quite understand what you are asking. Your question mentions a data migration to VxVM environment, whereas, the content of your post does not give any details about it ? Are you trying to move your data, from an LVM structured set of disks onto a VxVM data structure ? Or what exactly are you after ? Also, are you allowed a down time or not ? What is the amount of data you need to migrate ?

[scoooot]

I am moving data from one EVA to another. I need to point to the new destination. The LVM stuff I've completed with mirror UX.

For VxVM stuff I am going to CA over and then repoint. I just don't know the Veritas commands to do this.

I can afford a couple hours of down time.

[Sagar Sirdesai]

Hi
Once you have completed the data migration to the new list of disks.Present the disks to the server and then Use the below commands

1)isocan -fnCdisk;insg -evd sdisk
2) vxdiskctl enable.
3)vxdg deport
4)vxdg export
5)vxrecover -g -sb

Please let us know how it goes

Sagar

[scoooot]

This is awesome thank you very much. The only question I have is:
the disk is shared, 2 nodes, Oracle RAC, is it as simple as doing this on both nodes or do I have have to do something different because it is shared disk?

[scoooot]

Well the mystery is over. Once I reboot the 2 nodes the cluster comes up and Veritas is pointing to the new disk. Very nice. I think I like VxVM now. (-:

Cheers

[Sagar Sirdesai · Accepted solution]

Hi
Good to know that all is fine.

Please assign any points if you're happy with the answers.

Sagar

[scoooot]

It turns out VxVM is smarter than I thought it was. If I have time I'd spend more learning this stuff.

Thanks for the reply's it's nice to know there's help for these types of things.