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4 Replies Last post: Oct 26, 2009 10:47 AM by juchestyle  

Adding existing formatted luns to a new host posted: Oct 26, 2009 8:41 AM

Click to view juchestyle's profile Master
juchestyle
1,357 posts since
Jun 20, 2005

Hey guys, I have a cluster with 2 hosts that can see the luns and have been able to see the luns for a year or more now. I just got another host, that I just built, and I just asked the storage team to add those other luns to the new host.

Obviously I don't want to wipe out the production servers on those luns, so my question is, what is the right way to add these already formatted luns to the new host without wiping out the data on them?

Thank you,

Matthew

Kaizen!

Tags: adding, formatted, vmfs, luns, to, a, new, host

Re: Adding existing formatted luns to a new host

1. Oct 26, 2009 8:43 AM in response to: juchestyle
Click to view Troy Clavell's profile Guru
Troy Clavell
6,233 posts since
Oct 12, 2007
rescan storage adapters, if the LUNS were presented to the host, they should show up after the rescan.

Re: Adding existing formatted luns to a new host

2. Oct 26, 2009 8:47 AM in response to: Troy Clavell
Click to view juchestyle's profile Master
juchestyle
1,357 posts since
Jun 20, 2005

From the vmware client (GUI) I have right clicked "Rescan" a few times, then refreshed the storage and they still arn't showing up. Two or three days have passed so far between first gui rescan and last gui rescan.

Would it make a difference doing this from the command line?

Thank you,

Matthew

Kaizen!

Re: Adding existing formatted luns to a new host

3. Oct 26, 2009 8:49 AM in response to: juchestyle
Click to view Troy Clavell's profile Guru
Troy Clavell
6,233 posts since
Oct 12, 2007
if you "add storage", but don't actually add storage, do they show up there? If not, they may not have been presented correctly.

see this KB as well, just in case
http://kb.vmware.com/kb/1003988

Re: Adding existing formatted luns to a new host

4. Oct 26, 2009 10:47 AM in response to: Troy Clavell
Click to view juchestyle's profile Master
juchestyle
1,357 posts since
Jun 20, 2005

I didn't think I was crazy but it always helps to get a second opionion. I went back to the storage team, they promised everything was right, they checked again and realized they didn't mask the host correctly.

So, they won't be seen yet.

Thank you,

Matthew

Kaizen!

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