[DRBD-user] Testing new DRBD9 dedicated repo for PVE

Jean-Daniel Tissot Jean-Daniel.Tissot at univ-fcomte.fr
Tue Dec 27 14:18:38 CET 2016

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On 27/12/2016 12:08, Roland Kammerer wrote :
> On Tue, Dec 27, 2016 at 11:26:45AM +0100, Jean-Daniel Tissot wrote:
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>>     <div class="moz-cite-prefix">On 27/12/2016  10:19, Roberto Resoli
>>       wrote :<br>
> Please stop sending html-only mail.
Sorry for that, I do not see my mail was HTML-only.
>>     I used DRBD 9 knowing it is not recommended for production.<br>
> Hm, there might be some over interpretation, right? IMO all that was
> said is that if you don't need the additional features of DRBD9 (more
> nodes, auto-promote, RDMA, resource management with drbdmanage), then
> stay with drbd 8.4. IMO drbd9 improved a lot since .0, its simply your
> decision.
In https://pve.proxmox.com/wiki/DRBD9 they said "DRBD9 integration is introduced in Proxmox VE 4.x as technology preview".
I don't know what they mean by preview.
I don't have any commercial support for Proxmox or DRBD. Our financial  resources are limited.

>>     Since we are on a production cluster, is it dangerous to switch to
>>     Linbit repository ?<br>
> Switching the repo isn't. Proxmox drbdmange had very minimal
> modifications, basically using a different storage plugin as default. We
> even ship that modification in our repo. The real thing is that the
> drbdmanage *versions* shipped are very different. Get familiar with the
> new one, especially the changed startup, try it in some VMs. Know what
> the implications are if nodes are mission and you try to start the
> cluster. There are many posts about that already, I don't repeat it here
> again.
>>     When DRBD 9 will be stable and really usable in production?<br>
> That's not a serious question, right? When will Linux be stable?
For sure, a lot of my servers are on Debian / Jessie, they call it stable. That does not mean there is no bugs, but Jessie can be used in production.
What I mean is "Is DRBD 9 in testing mode ? And can we use it in production ?"

Sorry for my bad english.

Regards, Jean-Daniel
> Regards, rck

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