vTao
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LUN allocation owner

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Hi

We have migrated a list of LUNs from raid group to storage pool, after the migration the LUN has changed its default or current owner.

The allocation owners keeps track of meta data by Storage pool, and we would like to fix the current owner and default owner to be on the same SP as allocation owner.

What is the best way to identify list of luns their allocation, default and current owner view?

So we can go through and maually make a change.

Thanks

S

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christopher_ime
4 Beryllium

Re: LUN allocation owner

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I would recommend generating the "Pool LUNs" report available in both Navisphere (FLARE 29) and Unisphere (FLARE 30+).  You didn't mention which interface you are running, but just look for the "Report Wizard".

The "Pool LUNs" report is available via the following breadcrumb trail:

All Reports -> Configuration -> LUN Reports -> Pool LUNs

The sort is by "Folder Name" (default folder of "SP A" and "SP B" which correspond to Current Owner) and a secondary sort by "Pool LUN Number".  You will then see (side-by-side) the following columns:

Default Owner

Current Owner

Allocation Owner

Any LUNs where the SP isn't the same for all three will be very obvious.

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christopher_ime
4 Beryllium

Re: LUN allocation owner

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I would recommend generating the "Pool LUNs" report available in both Navisphere (FLARE 29) and Unisphere (FLARE 30+).  You didn't mention which interface you are running, but just look for the "Report Wizard".

The "Pool LUNs" report is available via the following breadcrumb trail:

All Reports -> Configuration -> LUN Reports -> Pool LUNs

The sort is by "Folder Name" (default folder of "SP A" and "SP B" which correspond to Current Owner) and a secondary sort by "Pool LUN Number".  You will then see (side-by-side) the following columns:

Default Owner

Current Owner

Allocation Owner

Any LUNs where the SP isn't the same for all three will be very obvious.

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vTao
1 Nickel

Re: LUN allocation owner

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Thanks Chris,

I will give pool LUN report a try tomorrow. Never thought about Unisphere reporting.

We are running FLARE 30 on CX4-4960.

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JonK1
2 Iron

Re: LUN allocation owner

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Chris, are you aware of any way to change the allocation owner?

We've got a system that is pretty unbalanced. The issue is resolved by trespassing a couple of LUNs, but you'll end up with a lot of trespassed LUNs in the various UI's. And after a FLARE code upgrade, everything hops back to default and you're back to square one.

Changing the default owner in a pool gives you the useful popup window that warns against doing it...

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dynamox
6 Gallium

Re: LUN allocation owner

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not pretty but you could create new LUNs on appropriate SPs and use LUN Migrator to move them around.

JonK1
2 Iron

Re: LUN allocation owner

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Hmm, I was slightly scared that answer would come..

Oh well, better than nothing right? The LUNs are small so it is do-able! Thanks dynamox!

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Re: LUN allocation owner

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Once you get your Pool LUNs report, you should make sure that the “default” owner matches the “allocation” owner for every LUN. Anywhere that those two don’t match should be corrected. Then you can easily use command line to “trespass -mine” to set all LUNs to their correct allocation owners anytime it is necessary.

As far as changing the “allocation” owner, you will need to create a new LUN on the correct SP and LUN Migrate.

Richard J Anderson

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JonK1
2 Iron

Re: LUN allocation owner

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Dynamox, i've used the LUN migrate procedure a couple of times last week. Works perfectly.. you have to manually trespass and change the default owner to match the allocation owner once the migration finishes, but otherwise.. great!

Tnx!