Hi Sage and other Ceph experts,
This is a greeting from Jevon, I'm from China and working in a company
which are using Ceph as the backend storage. At present, I'm evaluating
the following two options of using Ceph cluster to provide NAS service
and I need your advice from the perspective of stability and feasibility.
Option 1: Directly use CephFS
Since Ceph as a unified storage can provide file system storage service
via cephfs, this looks an ideal solution for my case if CephFS is ready
to be used in production environment. However, based on the previous
discussions on CephFS, I see that there are still some issues like not
ready for supporting multiple metadata servers, lack of a fully
functioning fsck and so on. Also, I learn that CephFS has been evaluated
by a large community of users and there are production systems using it
with a single MDS from the official website of Ceph. So it is difficult
for me to make the decision on whether I should use it.
Option 2: Ceph rbd + NFS server
This might be a common architecture used in current NAS storage. But the
problem is how to get rid of the single point failure on NFS server.
What I have right now is to use Corosync and Pacemaker(the typical HA
solution in Linux) to form a cluster. It seems that Sebastien Han has
verified the feasibility.
Your comments/advices would be highly appreciated and I'm looking
forward to your reply.
Thanks,
Jevon
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