Sharing Rhevm local storage domains

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This is my configuration. I have three machines. One is my rhevm manager system. Two are hosts where the VM's run. I have local storage on these two hosts. My manager sees these local storage area as separate domains. I can now only run VM's on the host that contains the storage domain of the VM.

I would like to run any VM on any host. Is that even possible? How to configure?

RK
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RH Red Hat Active Contributor 209 points
19 September 2013 7:09 PM

Not possible. You need shared storage for this to work.

RK Community Member 30 points
20 September 2013 6:52 PM

So if I had some other machine, and 'shared' its storage, the vm's located there could run on either machine?

Why then can't I share the storage on my existing hosts in the same manner?

RH Red Hat Active Contributor 209 points
25 September 2013 12:46 PM

If the storage is shared out to both RHEV host, meaning both RHEV host have access to the shared storage. Then you can create a datastore on the shared storage, which will allow VMs to run on either RHEV host.

Its technically possible to share storage from either of your RHEV host. Assuming your RHEV host is RHEL server and not a RHEV hypervisor. However, this setup is only suited for throw-away environments; its not a supported config.

You should check out the documentation: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.2/html/Technical_Reference_Guide/chap-Storage_architecture.html

RK Community Member 30 points
27 September 2013 2:34 PM

Thanks. Right I should have mentioned the type of RHEVM host. I am in fact running a RHEL server and NOT a RHEV Hypervisor.
I'll check out that documentation. Does it define what a 'throw-away environment is'? And what does it mean to be an unsupported config?

David Powles's picture Red Hat 25369 points
11 October 2013 8:20 AM

this means that Red Hat are not able to provide support for it, and it should not be used in production.

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