johnstob Absent Member.
Absent Member.
928 views

migrating existing NSS volumes into a cluster

I've been reading through the clustering documentation but it all talks
about new NSS volumes.

I have a couple of servers with SAN volumes that I wish to move into a
cluster. What is the best way to do this? I have tried the following
with two test volumes but have hit hiccups each time.

ServerA is non-clustered and ServerB and ServerC are in a two node cluster.

I have been trying this method:

1. deactivate the pool on ServerA
2. remove the SAN lun from ServerA and present to ServerB and ServerC
3. Delete the pool and volume edir objects associated to ServerA
4. mount pool on ServerB and update edir with new objects
5. deactivate pool and share device
6. mount pool again and update edir with pool and volume again
7. Create cluster resource
8. Test failover

The problems I have found are. On an existing nss partition that came
from a non-clustered server, each time I migrate the resource the new
server checks ownership of the nss pool and takes up to 30 seconds to
mount. On a freshly created nss partition I don't see the above, it just
fails over instantly.

To stop the servers checking ownership each time, I shutdown the entire
cluster and started it up again. This seemed to fix the problem.

I don't understand how or why. So to prevent this in the future, what is
the suggested best method for migrating existing NSS san volumes into a
new cluster?

Thanks for all and any assistance. I'm really starting to enjoy this
clustering stuff 🙂
Labels (1)
0 Likes
2 Replies
Anonymous_User Absent Member.
Absent Member.

Re: migrating existing NSS volumes into a cluster

Ben,

It appears that in the past few days you have not received a response to your
posting. That concerns us, and has triggered this automated reply.

Has your problem been resolved? If not, you might try one of the following options:

- Visit http://support.novell.com and search the knowledgebase and/or check all
the other self support options and support programs available.
- You could also try posting your message again. Make sure it is posted in the
correct newsgroup. (http://forums.novell.com)

Be sure to read the forum FAQ about what to expect in the way of responses:
http://support.novell.com/forums/faq_general.html

If this is a reply to a duplicate posting, please ignore and accept our apologies
and rest assured we will issue a stern reprimand to our posting bot.

Good luck!

Your Novell Product Support Forums Team
http://support.novell.com/forums/

0 Likes
beelsr Frequent Contributor.
Frequent Contributor.

Re: migrating existing NSS volumes into a cluster


you need to change the pool.volume in nssmu to make them shareable for
clustering. i don't know if you're doing this in your step 5.

there are a few TIDs on this process ut I can't search the KB right now
to find them for you...


--
Cheers!
Richard Beels
~ Network Consultant
~ Sysop, Novell Support Connection
~ MCNE, CNE*, CNA*, CNS*, N*LS



-- Cheers! Richard Beels ~ Network Consultant ~ MCNE, CNE*, CNA*, CNS*, N*LS
0 Likes
The opinions expressed above are the personal opinions of the authors, not of Micro Focus. By using this site, you accept the Terms of Use and Rules of Participation. Certain versions of content ("Material") accessible here may contain branding from Hewlett-Packard Company (now HP Inc.) and Hewlett Packard Enterprise Company. As of September 1, 2017, the Material is now offered by Micro Focus, a separately owned and operated company. Any reference to the HP and Hewlett Packard Enterprise/HPE marks is historical in nature, and the HP and Hewlett Packard Enterprise/HPE marks are the property of their respective owners.