On 04/23/2015 12:11 PM, Thorvald Hallvardsson wrote: > Hi guys, > > I need some help and answers related to share GFS2 file system over NFS. > I have read the RH documentation but still some things are a bit unclear > to me. > > First of all I need to build a POC for the shared storage cluster which > initially will contain 3 nodes in the storage cluster. This is all going > to run as a VM environment on Hyper-V. Generally the idea is to share > virtual VHDX across 3 nodes, put LVM and GFS2 on top of it and then > share it via NFS to the clients. I have got the initial cluster built on > Centos 7 using pacemaker. I generally followed RH docs to build it so I > ended up with the simple GFS2 cluster and pacemaker managing fencing and > floating VIP resource. Interesting, what fencing solution did you use? Fabio > > Now I'm wondering about the NFS. RedHat documentation is a bit > conflicting or rather unclear in some places and I found quite few > manuals on the internet about similar configuration and generally some > of them suggest to mount the NFS share on the clients with nolock option > RH docs mention local flock and I got confused about what supposed to be > where. Of course I don't know if my understanding is correct but the > reason to "disable" NFS locking is because GFS2 is already doing it > anyway via DLM so there is no need for NFS to do same thing what > eventually mean that I will have some sort of double locking mechanism > in place. So first question is where I suppose to setup locks or rather > no locks and how the export should look like ? > > Second thing is I was thinking about going a step forward and use NFS4 > for the exports. However from what I have read about NFS4 it does > locking by default and there is no way to disable them. Does that mean > NFS4 is not suitable in this case at all ? > > That's all for now. > > I appreciate your help. > > Thank you. > TH > > -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
