Roland, Thank you for your answer. Can you provide an example when there are 3 storage nodes with a drbdreplication network and one storagenetwork? Please, note that compute nodes are connected only to the storagenetwork. So I have some doubts related to the satellite / DRDB client configuration when clients are outside the replication network. I opened another thread here -> http://lists.linbit.com/pipermail/drbd-user/2017-November/023850.html
Thank you 2017-11-28 11:19 GMT+01:00 Roland Kammerer <roland.kamme...@linbit.com>: > On Tue, Nov 14, 2017 at 05:50:08PM +0100, Marco Marino wrote: > > Hi, > > I'm trying to understand if it is possible to deploy a 2 node solution > with > > drbd9/drbdmanage compatible with openstack-cinder-volume. Should I use 2 > or > > 3 nodes with drbdmanage? It seems that, in a 2 node configuration, if one > > node goes down, drbdmanage becomes unstable ( please see > > https://lists.gt.net/drbd/users/28672 ) > > In a two node cluster both have to be up, otherwise really have to force > drbdmanage to do operations (that is intentional). In a 3 node setup one > can fail, the others still have quorum. That is something you have to > decide. > > A common setup for openstack is 3 storage nodes and $N hypervisors that > act as drbdmange satellites/DRBD clients (without local storage, they > read/write data via the network). > > HTH, rck >
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