Can't connect to iSCSI LUNs after upgrade

[marvincm]

Hello,
I have two nodes in a Proxmox Cluster with an QNAP NAS. Now I have upgraded one node from Proxmox 5.1-46 to 5.2-1 and it doesn't connect to the iSCSI LUNs anymore.
The NAS is attached via 10GBE in a dedicated LAN.

There are no sessions since i've upgraded the node:

root@xv3:~# iscsiadm -m node -R
iscsiadm: No session found.

I also can't login manually:

root@xv3:~# iscsiadm -m node -T iqn.2004-04.com.qnap:tvs-ec1580mu-sas-rp:iscsi.xv34oracrepo.191ea0 -p 10.0.1.15:3260 -l
Logging in to [iface: default, target: iqn.2004-04.com.qnap:tvs-ec1580mu-sas-rp:iscsi.xv34oracrepo.191ea0, portal: 10.0.1.15,3260] (multiple)
iscsiadm: Could not login to [iface: default, target: iqn.2004-04.com.qnap:tvs-ec1580mu-sas-rp:iscsi.xv34oracrepo.191ea0, portal: 10.0.1.15,3260].
iscsiadm: initiator reported error (8 - connection timed out)
iscsiadm: Could not log into all portals

Has anybody had such a problem before and knows how to solve it?

The node with the older Proxmox Version still works without problems.

I hope somebody can help me.

Thanks,
Marvin

 

[ghusson]

Look at your network connectivity.
Test the ping, the MTU, the TCP session connectivity (ex http://rickardnobel.se/troubleshoot-iscsi-tcp-connectivity-from-esxi-with-netcat/) ?