Hello, I’m trying to setup a new TS-1232PXU-RP in a corporate environment, but I have severe stability issues.
Firmware is QTS 5.2.8.3359.
NAS memory is upgraded to 16GB
I’m using 8 x mechanical hard disks in a raid-6 array
My goal is to share folders via NFSv4.1 for Linux workstations (RHEL 9.7 and RHEL 10.1).
The NAS is mostly factory-default configured, it only has default admin account, single IP address, time synchronization via NTP, hostname resolution via DNS server, and NFS server enabled on the NAS.
Network connection for NAS and clients is a direct 1gbps ethernet attachment to a switch. Single subnet, no routing, no firewalling.
There is no heavy activity currently on the NAS. It’s in testing stage with a limited number of clients computers (less than 10).
I’ve carefully read the documentation and set up a shared folder as follow:
- Server is configured to allow NFSv4.1 only (disabled NFSv2/v3/v4.0)
- Shared folder is configured for NFS clients 192.168.1.0/24, sec=sys, rw, no_root_squash
On the client side, I run following command as root:
mount -t nfs -o nfsvers=4.1,sec=sys,rw <ip_of_nas>:/shared_folder /mnt/shared_folder
Most clients mount the folder correctly, the mount commands takes about 1 second and then I can access my remote files.
Problem 1: Randomly, some clients (not always the same) don’t succeed. The “mount” command hangs forever, then I press CTRL+C to abort. Several tries, same result.
After rebooting the workstation, sometimes it works, sometimes not. I need to reboot again. Sometimes it does not work on a specific workstation for an entire day, then it works the next day…
When mount hangs, running '“dmesg” on the client shows the following message:
RPC: state manager: lease expired failed on NFSv4 server with error 10082
Problem 2: Even when a workstation has mounted the shared folder correctly, it may hang after a few hours, even when there is no activity. The client says in dmesg “NFS server not responding, still trying …”, and I need to umount/mount the shared folder again.
Problem 3: When I reboot the NAS, all clients lose access to the shared folder, saying “NFS server not responding, still trying”, even after the NAS is back on the network. Again, I need to umount/mount the shared folder on each client, and some of them begin to fail (back to problem 1).
Please note that I have other (non-QNAP) NFS servers in my environment which work flawlessly with my workstations. That’s why I suspect there is something wrong on the NAS (server) side.
Please, can you give me advice on how to make the NFS server work correctly ?