Disk assign in a MetroCluster, I have an external LUN in another dimension

[c_morrall]

I have a V-series MetroCluster with external storage arrays. Something has gone missing for one external LUN (LDEV from a USP-V/XP24000 in my case). I've used &quot;disk assign -s unowned, disk assign -o <filer>&quot; successfully for other external LUNs, but not this one.

DSA002DC01> disk show NFC002DC04:1-1.126L11 

DISK      OWNER                      POOL  SERIAL NUMBER        HOME

------------ -------------              -----  -------------        -------------

NFC002DC04:1-1.126L11 DSA002DC02(151753476)    Pool0  50 134650102          DSA002DC02(151753476)

DSA002DC01> disk assign NFC002DC04:1-1.126L11 -s unowned

disk assign: Disk is currently owned by the partner and cannot be assigned.

Lets try it on the partner node then:

DSA002DC02> disk assign NFC002DC04:1-1.126L11 -s unowned

disk assign: Disk is currently owned by the partner and cannot be assigned.

DSA002DC02> disk show NFC002DC04:1-1.126L11  

DISK      OWNER                      POOL  SERIAL NUMBER        HOME

------------ -------------              -----  -------------        -------------

NFC002DC04:1-1.126L11 DSA002DC01(151751417)    FAILED 50 134650102          DSA002DC01(151751417)

DSA002DC02>

I may not have the full picture here, but it looks to me like both nodes in the MetroCluster thinks the partner owns the disk and I can't assign it to the filer where I want it.

[radek_kubka]

Hi,

Have you tried the same command, but with the -f option to force the operation?

Regards,
Radek

[aborzenkov]

Hmm ... I'd find out first why it is shown as FAILED on one head ...

[stuartwatkins]

Not really my specialist subject but if the disk is showing as already assigned you will need to unassign it from one of them.  You will have to do a priv set advanced to see the option, which is

disk remove_ownership <disk name>

Hope that helps

[c_morrall · Accepted solution]

This was in the end solved by unpresenting the external LUN from the third party array, and then presenting it again.