[ClusterLabs] Antw: DRBD AND cLVM ???

[Lentes, Bernd]

----- On Aug 1, 2017, at 8:06 AM, Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de wrote:

>>>> "Lentes, Bernd" <bernd.lentes at helmholtz-muenchen.de> schrieb am 31.07.2017
> um
> 18:51 in Nachricht
> <641329685.12981098.1501519915026.JavaMail.zimbra at helmholtz-muenchen.de>:
>> Hi,
>> 
>> i'm currently a bit confused. I have several resources running as
>> VirtualDomains, the vm reside on plain logical volumes without fs, these
> lv's
>> reside themself on a FC SAN.
>> In that scenario i need cLVM to distribute the lvm metadata between the
>> nodes.
>> For playing around a bit and getting used to it i created a DRBD partition.
> 
>> It resides on a logical volume (one on each node), which should be possible
> 
>> following the documentation on linbit.
>> The lv's reside each on a node on the local storage, not on the SAN (which
>> would be a very strange configuration).
> 
> So you use cLVM to crate local VGs, and you use DRBD to sync the local LVs?
> Why don't you use the shared SAN?
> 

I use it too. I just want to deal with DRBD and learn about it.

>> But nevertheless it's a cLVM configuration. I don't think it's possible to
>> have a cLVM and non-cLVM configuration at the same time on the same node.
> 
> YOu can definitely have clustered and non-clustered VGs on one node.
> 
>> Is that possible what i try to do ?
> 
> I'm still wonderinh what you really want to accieve.

See above.

> 
> Regards,
> Ulrich
> 
>> 
>> 
>> Bernd
>> 
>> 
>> --
>> Bernd Lentes
>> 
>> Systemadministration
>> institute of developmental genetics
>> Gebäude 35.34 - Raum 208
>> HelmholtzZentrum München
>> bernd.lentes at helmholtz-muenchen.de
>> phone: +49 (0)89 3187 1241
>> fax: +49 (0)89 3187 2294
>> 
>> no backup - no mercy
>>  
>> 
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Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
Ingolstaedter Landstr. 1
85764 Neuherberg
www.helmholtz-muenchen.de
Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe
Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Heinrich Bassler, Dr. Alfons Enhsen
Registergericht: Amtsgericht Muenchen HRB 6466
USt-IdNr: DE 129521671