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List:       linux-lvm
Subject:    Re: [linux-lvm] managing "local" LVM and cLVM concurrently ?
From:       "Lentes, Bernd" <bernd.lentes () helmholtz-muenchen ! de>
Date:       2016-06-15 11:36:44
Message-ID: 794851222.4973520.1465990604321.JavaMail.zimbra () helmholtz-muenchen ! de
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----- On Jun 14, 2016, at 10:25 PM, Bernd Lentes bernd.lentes@helmholtz-muenchen.de \
wrote:

> -------- Ursprüngliche Nachricht --------
> Von: Digimer <lists@alteeve.ca>

> On 14/06/16 11:27 AM, Lentes, Bernd wrote:
> > Hi,

> > i have a configuration where i have some local logical volumes (on an internal
> > RAID-Controller) and also some logical volumes on a SAN which are shared with a
> > second host. Is this possible concurrently ?
> > Which locking_type to i have to povide ?

> > Thanks.

> > Bernd

> Yup. When you create the VG on the cluster, use the -cy switch (cluster
> = yes). Conversely, when creating a VG on non-shared storage, use -cn.
> You need to set the locking to '3' (cluster locking) and be running the
> clvmd service (which requires DLM which is provided by cman on older
> distros and by a stand-alone DLM service on newer distros).

> I assume your cluster is formed properly and fencing/stonith is
> configured and tested?


No. Currently i'm just trying and testing.
I think cman is a Red Hat thing ? I have SLES 11 for the nodes. My plan is to use \
pacemaker. From what i read  until now DLM should be ressource managed by the cluster \
manager. Or can i configure it as a normal service, managed by init or systemd? 

Bernd
 

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