April 3, 20233 yr When I try to export a NFS mount from my Synology server over to my unRAID server, I am able to mount it with no issue. However, when I try to just do a simple ls to confirm I can see the data in the mount, it just hangs and I am unable to ctrl-c out of it. If I go to look at the shares on the unRAID server, that also hangs for ~10 minutes and then gives up. I need some help trying to troubleshoot. If someone can point me in the right direction on where to look for logs, that could help a bit. I looked in /var/log/messages but found nothing so that may be the wrong location. Let me know.
April 3, 20233 yr Author I should also add that when I try to stop the unRAID server so that I can remove the NFS mount, it won't stop. It just hangs.
April 3, 20233 yr Author I have been able to figure it out. I disabled jumbo frames (MTU 9000) by setting it back to a MTU size of 1500. I was then able to utilize the NFS mount as desired. I do have a few questions though. Why is it recommended to have a MTU size of 1500? Is technology better now and MTU 9000 is no longer needed? It was my thought that a MTU size of 9000 would allow bigger frames to be transmitted at once thereby giving more throughput and utilizing my network bond. I am running a bond of 4 network ports (at least for now until I can get 10GbE configured) and didn't know if that came into play.
April 3, 20233 yr Using Jumbo frames requires you set up all your network devices properely - router, switches, and all devices. It's not that easy.
April 4, 20233 yr Author Good point. I DIDN'T have it set up on the switch which was probably why. New switch will be here tomorrow so maybe I will try it out again.
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