Clustered file system / NFS Share
Hi,
I encountered a problem whyle trying to use NFS share resource, based on clustered file system. The configuration of the cluster is: two servers (Solaris 9 is installed on them) with the same three luns from clariion. Two luns are in one disk group, one volume, with shared file system; and one lun is in the second disk group, the second volume - simple vxfs on it. Two service groups were created - Clusterservice (default) and cvm group (parallel) for CFS. This configuration works fine. Then I created the third service group for NFS Share. The resources in this group are correspondingly: NIC - IP - DiskGroup - Mount - Share - NFSRestart + NFS. The situation is as following: The Share resource is placed on CFS volume which is mounted with cvm service group!!! NFSRestart LocksPathName was set to the second volume, which is mounted in this service group (NFS SHARE) before (NIC - IP - DiskGroup - Mount - Share - NFSRestart + NFS).
Then on the third server (not in the cluster) I mounted this NFS share and manually switch this service group (NFS SHARE) to the another server in the cluster.
The problem is that after failover the NFS share on the client (the third server) is not responding, though it is still mounted and dfshares shows the share on the remoute server in the cluster.
It seems to me that smth is wrong with NFSRestart or with dependencies between service groups...
Any advice will be appreciated!!
Thanks,
Pavel
Comments
Hi, Legrandmeitre,
I suspect that your NFS mounts on the third server are STALE after the switch inside the cluster? Please have a look in /etc/name_to_major on both of your cluster nodes, if the NFS driver have the same number inside. If the numbers are differen, then you have exactly this problem.
But, please be careful with changing the driver number in productive systems, the number must be unique on a server! This is the entry point to a driver in the system, and if you have there two identical numbers, your system will crash in most cases!
Roger
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