Thanks for pointing that out to me Konstantin.
I understand that it would use a kernel client instead of userland rbd lib.
Isn't it better as I have seen kernel clients 20x faster than userland??
I am probably missing something important here, would you mind detailing
that.
Regards,
Shantur
On Mon, Jan 18, 2021 at 3:27 PM Konstantin Shalygin <k0ste(a)k0ste.ru> wrote:
Beware about Ceph and oVirt Managed Block Storage, current
integration is
only possible with kernel, not with qemu-rbd.
k
Sent from my iPhone
On 18 Jan 2021, at 13:00, Shantur Rathore <rathore4u(a)gmail.com> wrote:
Thanks Strahil for your reply.
Sorry just to confirm,
1. Are you saying Ceph on oVirt Node NG isn't possible?
2. Would you know which devs would be best to ask about the recent Ceph
changes?
Thanks,
Shantur
On Sun, Jan 17, 2021 at 4:46 PM Strahil Nikolov via Users <users(a)ovirt.org>
wrote:
> В 15:51 +0000 на 17.01.2021 (нд), Shantur Rathore написа:
>
> Hi Strahil,
>
> Thanks for your reply, I have 16 nodes for now but more on the way.
>
> The reason why Ceph appeals me over Gluster because of the following
> reasons.
>
> 1. I have more experience with Ceph than Gluster.
>
> That is a good reason to pick CEPH.
>
> 2. I heard in Managed Block Storage presentation that it leverages
> storage software to offload storage related tasks.
> 3. Adding Gluster storage limits to 3 hosts at a time.
>
> Only if you wish the nodes to be both Storage and Compute. Yet, you can
> add as many as you wish as a compute node (won't be part of Gluster) and
> later you can add them to the Gluster TSP (this requires 3 nodes at a time).
>
> 4. I read that there is a limit of maximum 12 hosts in Gluster setup. No
> such limitation if I go via Ceph.
>
> Actually , it's about Red Hat support for RHHI and not for Gluster +
> oVirt. As both oVirt and Gluster ,that are used, are upstream projects,
> support is on best effort from the community.
>
> In my initial testing I was able to enable Centos repositories in Node Ng
> but if I remember correctly, there were some librbd versions present in
> Node Ng which clashed with the version I was trying to install.
> Does Ceph hyperconverge still make sense?
>
> Yes it is. You got the knowledge to run the CEPH part, yet consider
> talking with some of the devs on the list - as there were some changes
> recently in oVirt's support for CEPH.
>
> Regards
> Shantur
>
> On Sun, Jan 17, 2021, 9:58 AM Strahil Nikolov via Users <users(a)ovirt.org>
> wrote:
>
> Hi Shantur,
>
> the main question is how many nodes you have.
> Ceph integration is still in development/experimental and it should be
> wise to consider Gluster also. It has a great integration and it's quite
> easy to work with).
>
>
> There are users reporting using CEPH with their oVirt , but I can't tell
> how good it is.
> I doubt that oVirt nodes come with CEPH components , so you most probably
> will need to use a full-blown distro. In general, using extra software on
> oVirt nodes is quite hard .
>
> With such setup, you will need much more nodes than a Gluster setup due
> to CEPH's requirements.
>
> Best Regards,
> Strahil Nikolov
>
>
>
>
>
>
> В неделя, 17 януари 2021 г., 10:37:57 Гринуич+2, Shantur Rathore <
> shantur.rathore(a)gmail.com> написа:
>
>
>
>
>
> Hi all,
>
> I am planning my new oVirt cluster on Apple hosts. These hosts can only
> have one disk which I plan to partition and use for hyper converged setup.
> As this is my first oVirt cluster I need help in understanding few bits.
>
> 1. Is Hyper converged setup possible with Ceph using cinderlib?
> 2. Can this hyper converged setup be on oVirt Node Next hosts or only
> Centos?
> 3. Can I install cinderlib on oVirt Node Next hosts?
> 4. Are there any pit falls in such a setup?
>
>
> Thanks for your help
>
> Regards,
> Shantur
>
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