iSCSI w. Server 2008 R2 locks up on large writes

Grievous wrote:

Going through the logs there are two things that we noted. 1. Your volume is completely full. That shouldn't cause a problem, but it's worth noting. How large is this iSCSI LUN anyway? 2. There are a lot of network packet errors, as well as the ReadyNAS complaining about receiving packets out of order. What switch are you using and has anything been changed from default on that switch if it's managed? You can open Frontview and browse to the network settings page for ethernet 1(eth0), and hit the show errors button and you'll see the error counts that we saw in the logs. If you were to try and reproduce this again after resetting that error count, can you verify that no other access to the NAS was occurring(no one using CIFS or anything) and see if the error count is still increasing? If so, then it would indicate a network problem(likely a client side or switch configuration issue since it's all receive errors on the NAS side and only happens when you're writing)

The volume is the entire RAID5 array, 9TB.

Nothing has been changed. The setup is it's on a port based VLAN on an HP ProCurve 1800-24G. There is an uplink to a L3 switch but both the NAS and the client are on the same switch, so the traffic should never leave that local VLAN.

The client is an HP DL380 G7.

Could this be a Jumbo Frames issue? I could never get Jumbo Frames working with my NIC.

Initially I tried using teamed NICs on both the client and the NAS, but it was also having a lot of issues so I just went down to one nic on each.

PS - how do I reset the error count?