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 Post subject: Re: Change LUN ID from CLI
PostPosted: Fri Mar 29, 2019 1:16 am 

Joined: Wed May 07, 2014 1:51 am
Posts: 249
Hi,

could it be that you talk about the VV-WWN (SCSI-ID)?

Code:
showvv -showcols Name,VV_WWN



It can be changed on 3PAR with

Code:
setvv -wwn <newwwn>


but I don't know if this helps in your environment, no idea 'bout VMS.

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 Post subject: Re: Change LUN ID from CLI
PostPosted: Fri Mar 29, 2019 4:59 am 

Joined: Wed Nov 09, 2011 12:01 pm
Posts: 315
Ah VMS, I did spot a special option for that on the setvv command;
Code:
-udid <Udid_Val>
Specifies the user defined identifier for VVs for OpenVMS hosts. Udid value should be between 0 to
65535 and can be identical for several VVs.


Maybe that's what you need?


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 Post subject: Re: Change LUN ID from CLI
PostPosted: Fri Mar 29, 2019 5:44 am 

Joined: Wed May 07, 2014 1:51 am
Posts: 249
I just checked it on our test array, Udid and VV-ID are the same if you don't mess with it. Maybe that's why it looks like one has to change VV-ID...

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 Post subject: Re: Change LUN ID from CLI
PostPosted: Mon Apr 01, 2019 7:50 am 

Joined: Thu Mar 14, 2019 9:29 am
Posts: 15
You are correct.

To migrate the VMS existing LUNS to new LUNS the UDID can not match. However once migrated we need to change the udid to match that of the migrated LUN.

When creating a VV from the CLI we can give the LUN a number that sets LUNID, BSID and UDID to be the same. However when we change the udid (setvv -udid "some number" "vv name") it doesn't change the LUNID or the BSID.

This method works for migrations but I was looking for a command to change all ID to match for consistancy.

I found the only way to achive this is by cloning the migrated LUN and giving the clone the ID needed. Mapping it to the host and the host removing the old lun.

Both methods work, cloning is a few extra steps but cleaner and consistant.

Thank you for your replys.


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