Hi All,

POSIXFS is good option to mount cephfs filesystem as Data domain and get all benefits of virtualization layer and as well as ceph storage layer i am using since more than 2 years without problem

Tarun kumar kushwaha

Skyvirt Cyberrange

https://cyberrange.skyvirt.tech

On Wed, 21 Apr 2021, 13:03 Eyal Shenitzky, <eshenitz@redhat.com> wrote:

Hi Matthew,

Currently, in order to use Ceph in oVirt you have 2 options:

1. Ceph using ISCSI gateway - regular ISCSI storage domain with Ceph as the storage backend, supports all the regular operations [1].

2. Using the new Managed Block Storage (Cinderlib integration) technical-preview - Create a Managed Block Storage domain that doesn't support all the operations that we have for the "regular" storage domain you can find more info here [2] and [3].

Each option has its benefits.

[1] - https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/3/html/block_device_guide/using_an_iscsi_gateway

[2] - https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.4/html/installing_red_hat_virtualization_as_a_self-hosted_engine_using_the_command_line/set_up_cinderlib

[3] - https://www.ovirt.org/develop/release-management/features/storage/cinderlib-integration.html

On Wed, 21 Apr 2021 at 10:12, Sandro Bonazzola <sbonazzo@redhat.com> wrote:

+Eyal Shenitzky any suggestion?

Il giorno lun 12 apr 2021 alle ore 11:15 <matthew@peregrineit.net> ha scritto:

Hi All,

I need some "best practice" advice. We have a Ceph Storage Cluster (Octopus moving to Pacific) which we'd like to use with our new oVirt Cluster (all on CentOS 8 boxes). What I'd like to know is what is the "best" (ie recommended / best practice) way of doing this - via iSCSI, CFS, 'raw' RBD blocks, some other way I haven't read about yet, etc?

I realise 'best' is a subjective term, but what I tend to do is do 'manual' installs so that I both actually understand what is happening (ie how things fit together - I pull apart and rebuild mechanical clocks and watches for the same reason) and also so I can '"Puppet-ise" the results for future use. This means that I am *not* necessarily looking for "quick and dirty" or "quick and easy" (ie, I have no trouble using the CLI and 'vim-ing' conf files as required) but I do want a solid, "best-practice" system when I'm done.

So, can some please help? And also, would you mind pointing me towards the relevant documentation for the answer(s) supplied (yes, I *always* RTFM :-) ).

Thanks in advance

Dulux-Oz
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Sandro Bonazzola

MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA

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Regards,

Eyal Shenitzky

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