[Drbd-dev] [PATCH] dynamic creation/removal more then 256 drbd devices

Philipp Reisner philipp.reisner at linbit.com
Fri May 4 14:44:34 CEST 2007

Am Freitag, 4. Mai 2007 13:36 schrieb Stanislaw Gruszka:
> On Friday 04 May 2007 11:06, Philipp Reisner wrote:
> > We are just looking at the patch and are wondering why one
> > would like to have more than 256 devices ?
> Philipp,
> With LVM it is possible to create many logical volumes.
> One may want to create a lot of (small) logical volumes and
> use them as backing devices for drbd for replication
> to some hosts with also a lot of logical volumes.
> Now drbd have flexible meta data so replication of
> small size block devices have sense. Someone may want to
> make replication on many small devices.

Yes of course.

But in case I had an application that is in the need for
many block devices (e.g. a farm of kvm or xen instances...)
I would put a LVM VG on top of a singe DRBD device.

My question is more like: What was your motivation for doing
this patch ?

: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
: Vivenotgasse 48, 1120 Vienna, Austria        http://www.linbit.com :

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