Solved!
Go to SolutionI
ianhoskins
4 Posts
0
1244
December 15th, 2011 13:00
Metalun base identification
What is the best way to find the base lun of a meta lun? I originally thought it was the lun with the lowest id, but migrations screw that theory up.
Please see page 13 in the following for a complete explanation of the base component.
White Paper EMC CLARiiON MetaLUNs - A Detailed Review.pdf
Alt-Click to follow the link
glen
ianhoskins
4 Posts
418
0
Posted December 16th, 2011 05:00
OK, so it is saying the the MetaLun Number should match one of the component LUN IDs and that will be the base... here is an example from naviseccli getall.... MetaLune Number is 166, but all the component LUNs are in the 6xx. Am I looking at the wrong ID?
MetaLUN Number: 166
MetaLUN Name: META 166
MetaLUN WWN: 60:06:01:60:04:61:21:00:28:27:C6:98:81:21:DF:11
Default Owner: SP A
Auto-assign: No
Expansion Rate: HIGH
Bind Offset: 0
Can metaLUN Be Expanded: Yes
Current State: ENABLED
Current Owner: SP A
Percent Expanded: 100
Total User Capacity (Blocks/Megabytes): 2516582400/1228800
Actual User Capacity (Blocks/Megabytes): 2516582400/1228800
Auto-trespass: No
Is Redundant: Yes
Drive Type: Fibre Channel
Element Size Multiplier: 4
Read Histogram[0]: 91223
Read Histogram[1]: 73962
Read Histogram[2]: 111094
Read Histogram[3]: 18612802
Read Histogram[4]: 932862205
Read Histogram[5]: 1445789299
Read Histogram[6]: 1004868064
Read Histogram[7]: 2890156830
Read Histogram[8]: 567258760
Read Histogram[9]: 191968793
Read Histogram Overflows: 296057933
Write Histogram[0]: 87878
Write Histogram[1]: 190505
Write Histogram[2]: 71556
Write Histogram[3]: 2043653
Write Histogram[4]: 3325979823
Write Histogram[5]: 672102050
Write Histogram[6]: 115533215
Write Histogram[7]: 112757266
Write Histogram[8]: 36531975
Write Histogram[9]: 97992649
Write Histogram Overflows: 2022638
Read Requests: 479492110
Write Requests: 325923476
Blocks Read: 4043805411
Blocks Written: 3651257940
Components:
Number of LUNs: 4
LUNs:
LUN Number: 5965
LUN Name: LUN 609
LUN WWN: 60:06:01:60:04:61:21:00:FA:B1:B5:C9:31:4E:DF:11
RAID Type: RAID5
LUN Number: 5964
LUN Name: LUN 606
LUN WWN: 60:06:01:60:04:61:21:00:90:21:9B:18:34:4E:DF:11
RAID Type: RAID5
LUN Number: 5966
LUN Name: LUN 608
LUN WWN: 60:06:01:60:04:61:21:00:F2:8F:91:A4:31:4E:DF:11
RAID Type: RAID5
LUN Number: 5967
LUN Name: LUN 607
LUN WWN: 60:06:01:60:04:61:21:00:56:65:27:80:31:4E:DF:11
RAID Type: RAID5
Storagesavvy
474 Posts
418
1
Posted December 16th, 2011 09:00
The 6xx numbers you see are actually the text LUN names assigned to the LUNs before they were added to the Meta. You want to look at the LUN Numbers which are in the 5xxx range. If I recall correctly, the lowest number is the base LUN.
Richard J Anderson
ianhoskins
4 Posts
418
0
Posted December 16th, 2011 13:00
alrighty, that sounds good.... thanks for all the info.
kelleg
6 Operator
•
4537 Posts
418
0
Posted December 16th, 2011 13:00
I just created a 4 component strippedmetaLUN using LUNs 300, 301, 302 and 303. I expanded using LUN 303. This is the results of the naviseccli metalun -list command (minus extra stuff). It takes the meta base LUN (303) and renumbers the LUN Number to 24530 - the Number is the important part - LUN Name can be anything. It then takes the next component LUN, re-numbers the Number to 24531 (component 302) and so on (301, then 300). So the lowest "MetaLUN Number" is the metaLUN base LUN.
MetaLUN Number: 303
MetaLUN Name: LUN 303
Element Size Multiplier: 4
Components:
Number of LUNs: 4
LUNs:
LUN Number: 24530
LUN Name: LUN 303 <---- this is the meta base LUN - note that the LUN number above is 24530 - this is the lowest number of the four component LUNs.
LUN WWN: 60:06:01:60:8B:C9:22:00:06:D6:89:4D:2D:28:E1:11
RAID Type: RAID5
LUN Number: 24537
LUN Name: LUN 300
LUN WWN: 60:06:01:60:8B:C9:22:00:D4:66:8E:E5:2C:28:E1:11
RAID Type: RAID5
LUN Number: 24535
LUN Name: LUN 301
LUN WWN: 60:06:01:60:8B:C9:22:00:3A:4B:3E:04:2D:28:E1:11
RAID Type: RAID5
LUN Number: 24531
LUN Name: LUN 302 - this is the second component LUN - note that its new LUN Number is 24531 (line above)
LUN WWN: 60:06:01:60:8B:C9:22:00:E8:59:57:10:2D:28:E1:11
RAID Type: RAID5
glen