On 12/14/2017 09:46 AM, nigel davies wrote:
Is this nfs-ganesha exporting Cephfs? Yes
Are you using NFS for a Vmware Datastore? Yes
What are you using for the NFS failover? (this is where i could be going
wrong)
When creating the NFS Datastore i added the two NFS servers ip address in
NFS failover is more complicated than that. It doesn't natively support
failover from one machine to another. Instead, you need to have an
active/active or active/passive setup on the servers that manages
virtual IPs, and fails the IP over from one machine to another. This is
because NFS, as a protocol, will recover from a failed server if *that
server* comes back, but not to a second server. The virtual IP failover
looks, to the client, like a restart of a single server.
This is done in Ganesha currently with Pacemaker/Corosync to manage the
failover. It's in a supported product for Ganesha over Gluster, but
not, as far as I know, for Ganesha over Ceph. It has been done by
community members, however.
The Gluster docs for this are here:
http://docs.gluster.org/en/latest/Administrator%20Guide/NFS-Ganesha%20GlusterFS%20Integration/
In the future (Ganesha 2.6 / Ceph Mimic) this should be better supported
over Ceph.
Daniel
On Thu, Dec 14, 2017 at 2:29 PM, David C <dcsysengineer@xxxxxxxxx
<mailto:dcsysengineer@xxxxxxxxx>> wrote:
Is this nfs-ganesha exporting Cephfs?
Are you using NFS for a Vmware Datastore?
What are you using for the NFS failover?
We need more info but this does sound like a vmware/nfs question
rather than specifically ceph/nfs-ganesha
On Thu, Dec 14, 2017 at 1:47 PM, nigel davies <nigdav007@xxxxxxxxx
<mailto:nigdav007@xxxxxxxxx>> wrote:
Hay all
i am in the process or trying to set up and VMware storage
environment
I been reading and found that Iscsi (on jewel release) can cause
issues and the datastore can drop out.
I been looking at using nfs-ganesha with my ceph platform, it
all looked good until i looked at failover to our 2nd nfs serve.
I believe i set up the Server right. gave the two IP address of
the NFS servers.
when i shutdown the live NFS server, the datastore becomes
"inactive" even after i bring the NFS server backup, it stil
shows as inactive.
any advise on this i would be grateful incase i am missing
something.
i am using NFS 4.1 as i been advised it will support the fail over
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