topic Re: MSA2021i LUNs Not Appearing in Disk Enclosures

MSA2021i LUNs Not Appearing

John Dudmesh — Wed, 19 Nov 2008 07:26:45 GMT

We've just bought an MSA2012i with a second disk enclosure and 24 disks.

I've configured it with 2 vdisks and mapped the disks to host LUNs but only the LUNs in the first vdisk appear to the iSCSI initiator. I've tried VMWare ESXi, Windows and Linux initiators and get the same result with each so the problem lies with the disk array.

Can anybody explain what I need to do to get the LUNs in the second vdisk to appear?

show host-maps CLI command output below...

ost [IQN iqn.1998-01.com.vmware:xxxxxx-3ddbeabe, Name (xxxxxx)] Mapping View:
Volume Name Volume SN ID LUN Access Channels
----------------------------------------------------------------------------
RAID1_V1 00c0ffd5d8c20000b548184901000000 0 0 rw 0,1
RAID1_V2 00c0ffd5d8c20000b648184901000000 0 1 rw 0,1
RAID1_V3 00c0ffd5d8c20000b648184902000000 0 2 rw 0,1
RAID1_V4 00c0ffd5d8c20000b748184901000000 0 3 rw 0,1
RAID1_V5 00c0ffd5d8c20000b848184901000000 0 4 rw 0,1
RAID1_V6 00c0ffd5d8c20000b848184902000000 0 5 rw 0,1
RAID2_V1 00c0ffd5d8c20000aa7e214901000000 0 6 rw 0,1
RAID2_V2 00c0ffd5d8c20000aa7e214902000000 0 7 rw 0,1
RAID2_V3 00c0ffd5d8c20000ab7e214901000000 0 8 rw 0,1
RAID2_V4 00c0ffd5d8c20000ac7e214901000000 0 9 rw 0,1
Success: Command completed successfully

Re: MSA2021i LUNs Not Appearing

Uwe Zessin — Wed, 19 Nov 2008 08:04:14 GMT

Which controller owns the second vdisk? If it's the second one, did you configure the hosts to access it, too?

Re: MSA2021i LUNs Not Appearing

John Dudmesh — Wed, 19 Nov 2008 08:16:26 GMT

We only have 1 controller in the first enclosure though there are 2 enclosures. One of the disks in the second enclosure is in the first vdisk so I don't think it's the enclosure that's the problem.

Thanks,

J

Re: MSA2021i LUNs Not Appearing

Uwe Zessin — Wed, 19 Nov 2008 08:21:01 GMT

Please check the assignment again to be sure both vdisks are assigned to the only controller. From reading a customer adivisory, it sounds like some firmwareversions do allow one to assign a vdisk to a non-existent controller.

Re: MSA2021i LUNs Not Appearing

John Dudmesh — Wed, 19 Nov 2008 09:09:55 GMT

Both are assigned to controller A...

# show vdisks
Name Size Free Own RAID Dsk Spr Chk Stat Jobs Serial#
--------------------------------------------------------------------------------------------------------------
RAID1 12.0TB 2256.2MB A RAID5 15 0 64 FTOL EXPD 0% 00c0ffd5d8c20000ae48184900000000
RAID2 8001.5GB 1504.1MB A RAID5 9 0 64 CRIT INIT 75% 00c0ffd5d8c20000a47e214900000000
--------------------------------------------------------------------------------------------------------------

You might notice that I'm expanding the first VDISK - we did this because we need the extra space in a hurry, we already had the problem before I added 2 disks.