pereubu
2 Iron

Two Equally LUNs are seen the same way by the system

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Disk /dev/emcpowerc: 1099.5 GB, 1099511627776 bytes
255 heads, 63 sectors/track, 133674 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowerc1               1      133674  1073736373+  83  Linux

.....

Disk /dev/emcpowerd: 984.7 GB, 984756256768 bytes
255 heads, 63 sectors/track, 119723 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/emcpowerd doesn't contain a valid partition table

.....

The problem is that last LUN is introduced recently. On navisphere EMC manager 6.26.24. both LUNs are of disks of 456,6GB capacity. Both are SATAII and RAID10. The first LUN is with 14 Disks, while the second one is with 4 disks. The LUNs (Drives) are not seen as if they are the same capacity, although there is not much of difference between their capacity.

The first one is with user blocks: 2147483648

User capacity: 1024 GB

Raw Capacity 2048GB

The Second one:

The first one is with user blocks: 1923352064

User capacity: 917.126 GB

Raw Capacity 1834.251GB

Why they are not of the same capacity?

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dynamox
6 Thallium

Re: Two Equally LUNs are seen the same way by the system

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as long as you have enought capacity in the raid group it does not matter how many disks it contains. Try to enter this value in blocks

createlun.jpg

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dynamox
6 Thallium

Re: Two Equally LUNs are seen the same way by the system

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are you looking at LUN properties or RAID group properties ?

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pereubu
2 Iron

Re: Two Equally LUNs are seen the same way by the system

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I am looking at LUN properties

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dynamox
6 Thallium

Re: Two Equally LUNs are seen the same way by the system

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are you sure /dev/emcpowerd is the second LUN ? fdisk says it's 984G while Navi says it's only 917G ..something is not right. Do you have PowerPath on this system? Can you post "powermt display dev=all" output.

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pereubu
2 Iron

Re: Two Equally LUNs are seen the same way by the system

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Sorry I have included abriviated version. That is what you are asking:

"Disk /dev/emcpowerb: 572.1 GB, 572136620032 bytes
255 heads, 63 sectors/track, 69558 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowerb1               1       69558   558724603+  83  Linux

Disk /dev/emcpowerc: 1099.5 GB, 1099511627776 bytes
255 heads, 63 sectors/track, 133674 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowerc1               1      133674  1073736373+  83  Linux

Disk /dev/emcpowera: 71.5 GB, 71517077504 bytes
255 heads, 63 sectors/track, 8694 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowera1   *           1          13      104391   83  Linux
/dev/emcpowera2              14        8694    69730132+  8e  Linux LVM

Disk /dev/emcpowerd: 984.7 GB, 984756256768 bytes
255 heads, 63 sectors/track, 119723 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/emcpowerd doesn't contain a valid partition table

Disk /dev/emcpowere: 71.5 GB, 71517077504 bytes
255 heads, 63 sectors/track, 8694 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/emcpowere doesn't contain a valid partition table"

I am not in  the control of that system. Another company owns password etc. I believe that they have powerpath over there.

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dynamox
6 Thallium

Re: Two Equally LUNs are seen the same way by the system

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so which device was introduced last and where do you see the discrepancy ?

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pereubu
2 Iron

Re: Two Equally LUNs are seen the same way by the system

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The old drive same RAID10 and SATAII etc

Disk /dev/emcpowerc: 1099.5 GB, 1099511627776 bytes

255 heads, 63 sectors/track, 133674 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System

/dev/emcpowerc1               1      133674  1073736373+  83  Linux

I have created the following:

Disk /dev/emcpowerd: 984.7 GB, 984756256768 bytes
255 heads, 63 sectors/track, 119723 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/emcpowerd doesn't contain a valid partition table

They should both 1099.5GB. I guess?

the good one on LUN properties:

"User blocks: 2147483648
User capacity: 1024 GB
Raw Capacity 2048GB "

The recently created by myself - second one  is:

"User blocks: 1923352064
User capacity: 917.126 GB
Raw Capacity 1834.251GB"

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dynamox
6 Thallium

Re: Two Equally LUNs are seen the same way by the system

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the one you created is much smaller. If you like both to be identical size, you can actually specify blocks whenever you create a new LUN.

pereubu
2 Iron

Re: Two Equally LUNs are seen the same way by the system

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I have created another raid group more  and LUN for that created group. Everything seems to be the same. I have tried to unbind that LUN but of no avail. When I select Enterprise-Storage-Storage Groups, then select newly created storage  group, and select that particular LUN (only one in the group), click right mouse and choose "Unbind" . That generates: Error:Unbind LUN:"LUN XX is contained within a storage group". I do not know the way to unbind that LUN? Am I missing something?

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dynamox
6 Thallium

Re: Two Equally LUNs are seen the same way by the system

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in order to unbind a LUN your first need to remove it from the storage group.

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