NFSv4.1 client Read/Write operation may hang when pNFS is enabled on the SVM
Applies to
- ONTAP 9
- NFS v4.1 or NFS v4.2
- Parallel NFS (pNFS)
Issue
- When a NFS v4.1 or NFS v4.2 client attempts to Read/Write to the SVM with pNFS enabled, the operation hangs or latency might be noticed
- At the same time, the client logs the error in:
/var/log/messages
:
nfs: [LIF address/hostname] server not responding
- After ONTAP upgrade, client connected using NFSv4.1 and started facing read/write hung issues
- Vserver has multiple data lifs and all are not reachable from clients