From: Chris Ruhnke (ruhnke@us.ibm.com)
Date: Thu Jul 05 2007 - 20:34:23 EDT
RAID wizards,
I am redeploying a StorEdge A3500FC for a new project.
Host server running Solariss 5.8 patched up to end of last year.
>From RAID Manager (rm6) I performed a reset configuration to clear the old
setup.
For initial testing purposes I have set up 2 LUNs.
I used rdacutil to make both controllers active with nominal LUN load
balancing.
Indeed the status shows what I think it should -- one LUN on each
controller:
fin-dt# rdacutil -i fin-dt_001
fin-dt_001: dual-active
Active controller a (c4t5d0) units: 0
Active controller b (c3t4d1) units: 1
rdacutil succeeded!
... and the LUNs appear to be configured one on each controller:
# drivutil -l fin-dt_001
Logical Unit Information for fin-dt_001
LUN Group Device RAID Capacity Status
Name Level (MB)
0 1 c4t5d0 1 279948 Optimal
1 2 c3t4d1 1 139934 Optimal
drivutil succeeded!
But!!! Even after a boot -r, both LUNs get addressed on controller A and
nothing on controller B:
# ls /dev/dsk/c4t5d0*
/dev/dsk/c4t5d0s0 /dev/dsk/c4t5d0s2 /dev/dsk/c4t5d0s4 /dev/dsk/c4t5d0s6
/dev/dsk/c4t5d0s1 /dev/dsk/c4t5d0s3 /dev/dsk/c4t5d0s5 /dev/dsk/c4t5d0s7
# ls /dev/dsk/c3t4d1*
/dev/dsk/c3t4d1*: No such file or directory
# ls /dev/dsk/c4t5d1*
/dev/dsk/c4t5d1s0 /dev/dsk/c4t5d1s2 /dev/dsk/c4t5d1s4 /dev/dsk/c4t5d1s6
/dev/dsk/c4t5d1s1 /dev/dsk/c4t5d1s3 /dev/dsk/c4t5d1s5 /dev/dsk/c4t5d1s7
What else do I need to do to get the controller B hosted LUN to appear as
c3t4d1?
I am trying to get balanced/maximized I/O access to the LUNs.
--CHRis
Chris H.Ruhnke
IBM
Enterprise IT Generalist
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