I have a 6 node ESX 4.1 cluster connecting to Equallogic iSCSI arrays for storage. When i reboot a host, i get a series of messages like this in /var/log/messages
Apr 13 14:42:05 iscsid: Login Failed: iqn.2001-05.com.equallogic:0-8a0906-82482e208-14c81400c454d811-dc1 if=iscsi_vmk@vmk2 addr=192.168.75.180:3260 (TPGT:1 ISID:0x2) Reason: 00080101 (0x0101 Requested ITN has moved temporarily to the address provided.
Apr 13 14:42:05 )
Apr 13 14:42:05 iscsid: Notice: Delaying Release of (H41 T8 C1 session=80 target=9/9)
Apr 13 14:42:05 iscsid: Shutdown Session: iqn.2001-05.com.equallogic:0-8a0906-77c82e208-53781400c484d812-ocs-med if=iscsi_vmk@vmk2 addr=192.168.75.180:3260 (TPGT:1 ISID:0x2) (T9 C1) Reason=8
Apr 13 14:42:05 iscsid: Notice: Reclaimed Channel (H41 T9 C1 oid=a)
Apr 13 14:42:05 iscsid: Notice: Reclaimed Target (H41 T9 oid=a)
and the datastores do not reconnect. I am using the Dell/Equallogic MEM plugin if that matters.
Any ideas how I can fix this?
Welcome to the Community - Did this problem just start? Were you ever able to connect to the iSCSI storage? Are you able to resolve after the host reboots? Is this happening with a single host or all 6 hosts?
The problem started when I started building hosts for a View cluster, but then I realized the problem exists on the server cluster as well. I have 2 storage arrays, 1 SATA, 1 SAS. I have no problems connecting to the volumes on the SATA array, but only 4 of my datastores reside on that array. The remaining 50 datastores reside on the SAS array and that is where the problem is. I think the issue started before this, but I hadn't brought any new hosts online so it wasn't noticed
It is happening on 1 node on the server cluster and all 3 nodes on my View cluster. I assume it is happening on the other 5 nodes of the server cluster as well, but I am afraid to reboot them and not be able to bring my VMs back online.
Just to resolve this post, it turned out the problem was my network switch didn't support jumbo frames and I had them enabled on the iscsi vSwitch. As soon as i disabled jumbo frames, everything was fixed.