[DRBD-user] drbdmanage : error in reporting free space with thin-lvm ?

Roland Kammerer roland.kammerer at linbit.com
Sat Jan 23 09:25:12 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 Fri, Jan 22, 2016 at 07:48:25PM +0100, Julien Escario wrote:
> Seems I found a anwser : I was using drbdmanage 0.91 with a thin lv but this
> version is using drbdmanage.storage.lvm.Lvm as default plugin.
> I'm now wondering how I can change the default plugin BEFORE initializing the nodes.

The basic idea is to get rid of all node-specific configurations as much
as possible. drbdmanage is also used in dynamic openstack clouds with
many nodes, where node specific configurations do not scale. Updating
configuration files (and keeping them consistent) is error prone and it
was one of the goals of drbdmanage to avoid that for drbd resource
configuration files. So you usually "init" one, "edit-config" and set
the storage plugin in the global section. Done, and the values are
stored in the control volume and consistent for the whole cluster.

If you are in a closed universe like proxmox, patching the source is a
legitimate hack. In general we try to "protect" (patronize if you will)
the user from running into problems, which would happen _for_ _sure_ if
we allow too many node specific settings in /etc/drbdmanaged.cfg.

Regards, rck

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