Solaris,MPxIO and ALUA

Hi, Can I have pointer for enabling ALUA in solaris 9 and MPxIO? Is it available?-Joshey

[109 byte] By [jljla] at [2007-11-26 17:47:28]

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# 1

enable mpxio for what array?

enable it in /kernel/drv/scsi_vhci.conf

mpxio-disable="no";

load-balance="round-robin";

same file tell it to use mpxio for your HW

device-type-scsi-options-list =

"array_type?", "symmetric-option",

(i.e.)

揇GCRAID? 搒ymmetric-option?

enable it

symmetric-option = 0x1000000;

Hope this helps

HvRa at 2007-7-9 4:59:46 >

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# 2

Umm, doesn't that tell mpxio that the array is a symmetric array.Not a asymmetric array using ALUA to control the failover.

robert.cohena at 2007-7-9 4:59:46 >

# 3

Yes indeed, Sorry.

HvRa at 2007-7-9 4:59:46 >

# 4

ALUA support should be included in the latest san kit (4.4.11 appears to be the latest).The documentation says its supported, but doesnt indicate anything about turning it on.Maybe it just works :-).

robert.cohena at 2007-7-9 4:59:46 >

# 5

Thank you .....Sorry for the delay to get back ...

I am trying to enable the ALUA fuction(MPxIO is configured as per expectation). I am using Netapp storage system in SSI were recommended to avoid the IO through the proxy paths. This, ALUA , feature is available in Solaris 10 U2 .

Let check with the SFS4.4.11 in Solaris 9 ..and will update the status ......Meanwhile any feedback is welcome

-Joshey

jljla at 2007-7-9 4:59:46 >

# 6

I know this thread is old, but from what I've got, SSI and MPxIO with ALUA is only supported with v10u2 as mentioned before without a PVR. The symmetric option really doesn't matter since the addition of "load-balance=none" will ensure there are no partner-path misconfigure errors. Were you able to resolve your issue already?

localizedinsanitya at 2007-7-9 4:59:46 >

# 7

You are correct. ALUA is only supported outside a PVR with Sol10 U2/U3. You are incorrect however with your next statement. The symmetric option when enabled does by its very name disable asymmetric access. In order to have ALUA (TPGS) enabled on NetApp storage, Run SSI, ONTAP 7.2.X, and set the igroup to alua on.

joebotcha at 2007-7-9 4:59:46 >

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