Failing on NIC removal

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So I finally got my multipath running through both the NIC and HBA
interfaces, but I'm not having any luck going through testing to
verify it's actually failing over between the connections.

# multipath -l
mpath0 (30690a018f015191a6472441d1500f057)
[size=4 GB][features="0"][hwhandler="0"]
\_ round-robin 0 [active]
 \_ 3:0:0:0 sdc 8:32 [active][ready]
\_ round-robin 0 [enabled]
 \_ 1:0:1:0 sdb 8:16 [active][ready]

I can unplug the HBA (see below) and the connection to the SAN remains.

# multipath -l
mpath0 (30690a018f015191a6472441d1500f057)
[size=4 GB][features="0"][hwhandler="0"]
\_ round-robin 0 [active]
 \_ 3:0:0:0 sdc 8:32 [active][ready]
\_ round-robin 0 [enabled]
 \_ 1:0:1:0 sdb 8:16 [failed][faulty]

But when I unplug the NIC connection, the multipath command hands,
trying to list files on the SAN partition hangs, and I'm getting these
messages:

Nov 19 17:15:13 ems1 kernel: iscsi-sfnet:host3: Connect failed with rc
-113: No route to host
Nov 19 17:15:13 ems1 kernel: iscsi-sfnet:host3: establish_session
failed. Could not connect to target
Nov 19 17:15:13 ems1 kernel: iscsi-sfnet:host3: Waiting 10 seconds
before next login attempt

How to troubleshoot this situation?

Thanks,
Scott

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