Problem connecting to iSCSI storage

[crescendas]

We have 2 ESXi 4.1 servers having no problem connecting to our iSCSI storage. However, the 3rd ESXi 4.1 server just could not get any path to connect to our iSCSI storage.

A funny issue is that when I execute "esxcfg-swiscsi -e" to enable iSCSI Software Adapter and have verified that it is enabled by execute "esxcfg-swiscsi -q", the GUI still shows that it is disabled. However, when I use the GUI to enable or disable, the CLI reflect the status correctly. Anyway, I have enable it from both GUI and CLI, but it just can't get any path. Any idea?

[crescendas]

I think I found the reason (see attached). When executing "esxcfg-scsidevs -a", my software iSCSI adapter is showing this:

vmhba33 iscsi_vmk         online    iscsi.vmhba33                           iSCSI Software Adapter

There is a mismatch between CLI and GUI again.

CLI - iscsi.vmhba33

GUI - iqn.1998-01.com.vmware:localhost-dell2900

Is there a way to enter the iSCSI Name (WWN) in CLI in order to ensure that both interface match???

[nava_thulasi39]

Hi,

This command brings the IQN name by Cli. Have you tried this

vmkiscsi-tool -I -l vmhba33 or <adaptername>

[crescendas]

Thanks! The output is showing the correct full iSCSI name. If this is not the cause of my problem, what else could be the cause?

[ImranMogal]

Check you iSCSI storage configuration for 3rd esxi host IQN

[crescendas]

The configurations are the same except for IP addresses and name on the host.

I will double-check my network connections and switch configuration to ensure the VLANs are the same too. Can't think of any other cause.

[crescendas]

I found the cause. It's VLAN configuration on the SAN switch! Switch to the ports that shared the same VLAN resolve the issue.