[linux-lvm] managing "local" LVM and cLVM concurrently ?

[Lentes, Bernd]

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
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Bernd Lentes

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Post by Lentes, Bernd
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?

[Lentes, Bernd]

-------- Ursprüngliche Nachricht --------

Post by Lentes, Bernd
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


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, Dr. Alfons Enhsen, Renate Schlusen (komm.)
Registergericht: Amtsgericht Muenchen HRB 6466
USt-IdNr: DE 129521671