Javen,
Assuming that this is an iscsi target that i
have written/rather have full control over it, how can
i make sure that my iscsi initiator driver or even the
'iscsiadm' (Solaris's own iscsi initiator) is able to
use MPxIO on it?
I have configured the target to have the same name
with 2 portals, each with different target portal
group tags both presenting the same LUN to the OS
thereby providing path redundancy
I was able to use sendtargets discovery from the
'iscsiadm',get 2 sessions from both the portals .But
found that instead of creating vHCI based pathinfo
nodes ,regular ndi_dev info nodes were created for
BOTH the LUNS ( If MPxIO worked of course, the paths
would be merged and there would be only one entry
right?)
I tried adding the 'VID PID' entry in the
scsi_vhci.conf with BOTH symmetric/non-symmetric
options but it did not WORK ( MDI_NOT_SUPPORTED error
returned in mdi_pi_online())
what needs to be done from the target pt of view to
indicate MPxIO support?
Thanks
Som
--- Javen Wu <[EMAIL PROTECTED]> wrote:
> Hi Som,
>
> If your iscsi target doesn't support ALUA, you need
> check whether your
> iscsi target can match any one of failover operation
> types solaris
> supports. Solaris supports asymmetric/symmetric EMC
> failover operation,
> LSI asymmetric failover operation, sun standard
> symmetric failover and
> sun standard asymmetric failover operation, 5 types
> failover operation.
> Except sun standard symmetric failover types (ALUA),
> other types match
> fops by vendor ID and product ID.
> If your iscsi target cannot match to any type of
> failover operation set,
> the mdi_pi_online() always fail.
> So I think you need make sure the type of your iscsi
> target, then let we
> see whether you need add your vendorID and product
> ID to any specific
> fops for matching. If you debug more deeper, you
> would find the
> mdi_pi_online fails at *sfo_device_probe() routine
> of struct
> scsi_failover_ops.
>
> Cheers
> Javen
>
> Somnath kotur wrote:
>
> >Hi Javen,
> > Would you be able to help with some
> MPxIO
> >support problems i am facing currently with my
> iSCSI
> >HBA Driver or guide me to someone /a forum who
> could?
> >I find that there has already been an entry with
> >similiar questions on the driver-discuss
> >/storage-discuss forum by one 'ram vegesna' and
> nobody
> >has replied to it yet?
> >
> >Basically mdi_pi_online() is returning
> >MDI_NOT_SUPPORTED .The first time i got this error
> i
> >realised that i had to add entry of my LUN to the
> >scsi_vhci.conf file after which it worked. But
> since
> >then (a reboot later) every single attempt at this
> has
> >been failing with the same error code,could you pls
> >help?
> >
> >Thanks
> >Som
> >
> >
> >
>
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> >Never miss a thing. Make Yahoo your home page.
> >http://www.yahoo.com/r/hs
> >
> >
>
>
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