Set up a new ISO domain with RHEV 3.5

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I'm missing something. In RHEVM 3.5 I go to the Storage tab, New Domain, select my data center. I have a choice of a few types of data domains and export domains. What happened to the ISO / NFS domain choice?

I want to move all my ISOs to a different NFS server. That's why I need a new ISO domain.

thanks

- Greg Scott

GS
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st Active Contributor 207 points
18 February 2015 2:18 PM

Hi Greg

To my knowledge you can only define one ISO Domain. So the reason could be you already have defined one.
I've also migrated the ISO Domain to another NFS. Just mounted both the new and the old NFS shares on a Linux Server and moved the iso files.
After that (in RHEV-M) I Destroyed the ISO Domain and added the new one. Just remember the chown 36:36 (vdsm:kvm).

/Stig

GS Expert Active Contributor 1269 points
18 February 2015 5:35 PM

Used to be, you could define lots of ISO domains but only activate one at a time. So then if you need to move, you defined the new one, which set up that awful looking GUID subtree, copied all the ISOs from the old one to the new one, then deactivate the old one and activated the new one. I tried deactivating and detaching from my old ISO domain, but I still don't have any choice to create a new one. This feels like some over-eager engineering. Or maybe a bug. And now I worry if I destroy my old ISO domain, what happens if the GUI still doesn't allow me to create a new one?

- Greg

st Active Contributor 207 points
19 February 2015 12:03 PM

I have 3 managers
RHEV-M Version 3.5.0-0.32.el6ev
RHEV-M Version 3.4.5-0.3.el6ev
RHEV-M Version 3.4.5-0.3.el6ev
On neither of them I have the option to create an ISO Domain which i believe is because I already have one configured. So I did a very simple test:

I use the same nfs share for ISO-Domain across all RHEV-M's

  1. Set iso domain in maintenance
  2. Detach ISO-Domain from DataCenter
  3. Remove ISO-Domain where I had the option to "Format Domain" which I chose not to, since we use the same ISO-Domain for all our managers.

I tested this on the RHEV-M Version 3.5.0-0.32.el6ev and after the removal I had the option to create ISO-Domain again but since I already have one configured I chose the "Import Domain" option.

There's both at "Destroy" and a "Remove" option. You shouldn't use the "Destroy" option unless experience removal problems and know exactly what the outcome will be.

GS Expert Active Contributor 1269 points
19 February 2015 1:45 PM

Thanks Stig - that's exactly what I ended up doing last night. On the old ISO domain - Maintenance, then Detach, then Remove. Don't check the reformat box. Create and attach the new ISO domain, then copy all the ISOs from the old to the new.

thanks

- Greg

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