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912
June 20th, 2010 18:00
How to identify base LUN?
Hi,
Can anyone advise how I can identify what the base LUN is in an existing meta LUN? The reason I ask is because I would like to keep the base LUNs spread evenly over all RAID groups and would like to know how many base LUNs are in each RAID/storage group.
Thanks.
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AranH1
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June 21st, 2010 08:00
Yeah that is the only way I could ever figure out how to tell which one was the base. The 'MetaLUN Number' value from the properties of the metalun will match the LUN ID of the base LUN.
I have tried other ways to get this info but non of the metalun cli commands have any information on which LUN was the base in component 0 that I could ever find.
aloski
38 Posts
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June 20th, 2010 19:00
Hi,
primus solution emc157878 ‘How can you tell whether a metaLUN is striped or concatenated using SPcollects?’ should help!
Unzip either spa or spb spcollect, then unzip the
dynamox
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June 20th, 2010 20:00
If you look at a MetaLUN, MetaLUN number will always have the id of base component LUN.
kelleg
6 Operator
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June 22nd, 2010 14:00
Have you tried the "metalun -list" command?
glen
AranH1
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June 23rd, 2010 07:00
The 'metalun -list' and and 'metalun -list -components' don't identify which LUN is the base LUN.
kelleg
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June 23rd, 2010 14:00
As you mentioned earlier, it's always the component LUN that has the same LUN number - not LUN name. You can see the LUN numbers in the -list output
AranH1
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June 23rd, 2010 15:00
Glen, understood. It is just not clearly identified as the base lun in the output. Would be a nice addition for the GUI and CLI to clearly identify which LUN is the base LUN for the reasons the OP stated.