On 09/22/2011 12:02 AM, coec wrote:
> Hi all
> 
> I'm using RHEL 6.1 (fully patched, 2.6.32-131.12.1.el6.x86_64 with
> iscsi-initiator-utils-6.2.0.872-21.el6.x86_64) on HP BL460c G7 blades
> talking to a P4500 14.4TB Virt SAN (two clustered P4500 boxes).
> 
> As the blade has two FlexHBA (iSCSI) interfaces I want to do
> multipathing.  Is the following valid? (Spefically, should both ifaces
> have the same iqn?)
> ---
> iscsiadm -m iface
> default tcp,<empty>,<empty>,<empty>,<empty>
> iser iser,<empty>,<empty>,<empty>,<empty>
> be2iscsi.00:17:a4:77:10:01 be2iscsi,
> 00:17:a4:77:10:01,<empty>,<empty>,iqn.2011-08.scada.benvir2p
> be2iscsi.00:17:a4:77:10:00 be2iscsi,
> 00:17:a4:77:10:00,<empty>,<empty>,iqn.2011-08.scada.benvir2p
> ---
> 
> In this setup, I can only login to the LUN on iface be2iscsi.
> 00:17:a4:77:10:01.  When I attempt to login with the other iface I get
> 'iscsiadm: No records found'.

It sounds like you did not bind that iface. Does:

iscsiadm -m node -P 1

show records for both ifaces?


You should have done something like

iscsiadm -m discovery -t st -p ip -I be2iscsi.00:17:a4:77:10:01 -I
be2iscsi.00:17:a4:77:10:00

or
iscsiadm -m discovery -t st -p ip -I be2iscsi.00:17:a4:77:10:01
iscsiadm -m discovery -t st -p ip -I be2iscsi.00:17:a4:77:10:00 -o new



> 
> I have other servers where I'm only using a single FlexHBA (be2iscsi)
> and they are having their own troubles.  For example, dmesg is
> reporting lots of:
> ---
> scsi: host 0 channel 0 id 0 lun4194304 has a LUN larger than allowed


Do you actually have a LUN with that value 4194304?

Maybe the LeftHand target needs some blacklist entry in the scsi mid
layer to scan for devices properly.

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