[OpenIndiana-discuss] Multiple devices appearing as one behind SAS expander

Schweiss, Chip chip at innovates.com
Thu Mar 21 13:13:32 UTC 2013


I have four 480GB SSDs I'm trying to re-add to my pool as L2ARC.   They
were all connected internally on the server, but now I have a dedicated SAS
JBOD for the 2 1/2 SSDs in the system.   The JBOD is a SuperMicro 2U with
LSI SAS2X36 expander.

The SSDs are are all showing up as a single device: c11t0000120000000000d0s0

They are incorrectly identified as the same device by the multipathadm:

mutipathadm list lu:

        /dev/rdsk/c11t0000120000000000d0s2
                Total Path Count: 4
                Operational Path Count: 4

Not sure where napp-it gets its information for it's controller view but
this is how it reports them:

 c14::w5003048001d91b4e,0   connected   configured   unknown   Client
Device: /dev/dsk/c11t0000120000000000d0s0(sd75) disk-path n /devices/pci at 0
,0/pci8086,340e at 7/pci1000,30d0 at 0/iport at f000:scsi::w5003048001d91b4e,0
 c14::w5003048001d91b4f,0   connected   configured   unknown   Client
Device: /dev/dsk/c11t0000120000000000d0s0(sd75) disk-path n /devices/pci at 0
,0/pci8086,340e at 7/pci1000,30d0 at 0/iport at f000:scsi::w5003048001d91b4f,0
 c14::w5003048001d91b5a,0   connected   configured   unknown   Client
Device: /dev/dsk/c11t0000120000000000d0s0(sd75) disk-path n /devices/pci at 0
,0/pci8086,340e at 7/pci1000,30d0 at 0/iport at f000:scsi::w5003048001d91b5a,0
 c14::w5003048001d91b5b,0   connected   configured   unknown   Client
Device: /dev/dsk/c11t0000120000000000d0s0(sd75) disk-path n /devices/pci at 0
,0/pci8086,340e at 7/pci1000,30d0 at 0/iport at f000:scsi::w5003048001d91b5b,0

How do I break this and get OI to see these as 4 independent devices?

Thank you,
-Chip


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