El 2023-02-22 11:13, Gianluca Cecchi escribió:

On Wed, Feb 22, 2023 at 1:46 PM <fsayd@derecho.uncu.edu.ar> wrote:

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Hello:

I am following Sandro's blog post to configure oVirt with Ceph as storage domain

(https://blogs.ovirt.org/2021/07/using-ceph-only-storage-for-ovirt-datacenter...).

That blog was focused on Hosted Engine setup where one wanted to leverage a pre-existing Ceph installation for storage (both for the dedicated storage domain to assign to the hosted engine VM and for other storage domains to be used for "regular" VMs). Cinderlib was not supported for the initial hosted engine setup (where you create the hosted engine dedicated storage domain) and the blog describes how to overcome the limitation and configure your existing Ceph cluster iSCSI gateway functionality, so that you make the initial install of oVirt specifying iSCSi storage type

Then the blog describes how to use cinderlib for new storage domains after install, to be used for "regular" VMs.

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I need to setup cinderlib but the referenced link is dead:

https://ovirt.org/documentation/installing_ovirt_as_a_self-hosted_engine_usi...

The web interface has been desupported in 4.5, so you cannot find it anymore in official oVirt docs. I don't know if there is a copy of the old 4.4 ones anywhere....

you have to use this one (command line based):

https://ovirt.org/documentation/installing_ovirt_as_a_self-hosted_engine_usi...

and there the section 3.2 Preparing iSCSI Storage

https://ovirt.org/documentation/installing_ovirt_as_a_self-hosted_engine_usi... is managed by you using the blog info above for iSCSI Gateway, and eventually further modifications due to possible new releases of Ceph...

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I can't find any instructions about cinder/ceph in ovirt docs.

This is because it is not supported, neither in RHV nor in oVirt. I don't know where you can find the cinderlib part for oVirt now.

But you can refer to this Red Hat solution

https://access.redhat.com/solutions/5605141

(possibly you need a subscription, perhaps the free developer one is sufficient) You have to adapt the repos part for oVirt/CentOS Stream, though

Sandro, any added information here for oVirt repos to configure cinderlib on oVirt 4.5?

Gianluca

Thanks for the reply I followed the RedHat solution: 1 - Installed python3-cinderlib and ceph-common on engine 2 - Configured Managed Block domain support: engine-config -s ManagedBlockDomainSupported=true 2 - Copied ceph config and keyring in the /etc/ceph engine directory 3 - Installed python3-os-brick and ceph-common on hosts 4 - Cinderlib experimental support enabled at engine setup I followed all the previous steps but Managed Block Domain doesn't show in the "Add Domain" dialog on Web Interface so I can't configure ceph connection settings. Im installing engine on a stand-alone server (No hosted engine, no ceph over iscsi) Managed Block Domain (Ceph) will be the main (and only) storage domain. I can't found any clue on ovirt logs/cinderlib logs. Engine and hosts running Rocky Linux 8.7. Ovirt version 4.5 Any clues?