SCSI ID conflict....

[OLIVA_1]

Hello,

I would install a cluster with 2 servers L3000 and 2 disk systems 2300.
I have 2 two LVD SCSI Adapter per server, so I would like connected :

1/ LVD SCSI Adater A Host 1 to BBC A disk system 1
2/ LVD SCSI Adater A Host 2 to BBC B disk system 1
and
3/ LVD SCSI Adater B Host 1 to BBC A disk system 2
4/ LVD SCSI Adater B Host 2 to BBC B disk system 2

With this kind of configuration the 14 disks of 2 disk systems could be reachable by the 2 servers.
When I connect 1/ and 4/ it's ok... but if I connect 2/ and/or 3/ I have a SCSI conflict....

When can I identify what is the SCSI ID for each Controller (LVD SCSI) ?


Thanks,

[Torsten.]

You need to configure the SCSI ID for 1 of the servers on the shared bus from 7 to 6.

You can do this by stopping the boot process and use the SCSI command in the service menu.

The ioscan and the SCSI command from BCH will show you the configured ID for each controller.

[A. Clay Stephenson]

It depends upon the exact model of the controller and of the host computer but the SCSI ID can be inferred from the hardware path. If you do an ioscan -fn, you should easily be able to recognize which part of the hardware path corresponds to the SCSI ID. Typically, even without conflicting SCSI controller ID's, ioscan will only "see" the local SCSI HBA and the remote HBA will simply not be displayed. You therefore need to run the ioscan on each host.

Some HBA SCSI ID's are set via on-baord jumers or DIP switches and other can be set from the firmware monitor. You want to use the highest priority SCSI ID's for HBA's on the same bus so set them to 7,6, and 5 in that order.

[OLIVA_1]

What are my SCSI IDs for my two LVD cards ?


(/root/home/root)(root)#ioscan -fnCext_bus
Class I H/W Path Driver S/W State H/W Type Description
=================================================================
ext_bus 0 0/0/1/0 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide Single-Ended
ext_bus 1 0/0/1/1 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide Single-Ended
ext_bus 2 0/0/2/0 c720 CLAIMED INTERFACE SCSI C87x Ultra Wide Single-Ended
ext_bus 3 0/0/2/1 c720 CLAIMED INTERFACE SCSI C87x Fast Wide Single-Ended
ext_bus 4 0/8/0/0 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
ext_bus 5 0/8/0/1 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
ext_bus 6 0/12/0/0 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
ext_bus 7 0/12/0/1 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
(/root/home/root)(root)#

[Torsten.]

Please provide a full "ioscan -fn"!

The controller entry looks like this

ctl 0 1/0/0/3/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c0t7d0


for ID 7.

[OLIVA_1]

That's full ioscan -fn :


(/root/home/root)(root)#ioscan -fn
Class I H/W Path Driver S/W State H/W Type Description
=============================================================================
root 0 root CLAIMED BUS_NEXUS
ioa 0 0 sba CLAIMED BUS_NEXUS System Bus Adapter (803)
ba 0 0/0 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
lan 0 0/0/0/0 btlan CLAIMED INTERFACE HP PCI 10/100Base-TX Core
/dev/diag/lan0 /dev/ether0 /dev/lan0
ext_bus 0 0/0/1/0 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide Single-Ended
target 0 0/0/1/0.2 tgt CLAIMED DEVICE
disk 0 0/0/1/0.2.0 sdisk CLAIMED DEVICE HP DVD-ROM 305
/dev/dsk/c0t2d0 /dev/rdsk/c0t2d0
target 1 0/0/1/0.3 tgt CLAIMED DEVICE
tape 0 0/0/1/0.3.0 stape CLAIMED DEVICE HP C1537A
/dev/rmt/0m /dev/rmt/0mnb /dev/rmt/c0t3d0BESTn /dev/rmt/c0t3d0DDSb
/dev/rmt/0mb /dev/rmt/c0t3d0BEST /dev/rmt/c0t3d0BESTnb /dev/rmt/c0t3d0DDSn
/dev/rmt/0mn /dev/rmt/c0t3d0BESTb /dev/rmt/c0t3d0DDS /dev/rmt/c0t3d0DDSnb
target 2 0/0/1/0.7 tgt CLAIMED DEVICE
ctl 0 0/0/1/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c0t7d0
ext_bus 1 0/0/1/1 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide Single-Ended
target 3 0/0/1/1.2 tgt CLAIMED DEVICE
disk 1 0/0/1/1.2.0 sdisk CLAIMED DEVICE HP 18.2GATLAS10K3_18_SCA
/dev/dsk/c1t2d0 /dev/rdsk/c1t2d0
target 4 0/0/1/1.7 tgt CLAIMED DEVICE
ctl 1 0/0/1/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c1t7d0
ext_bus 2 0/0/2/0 c720 CLAIMED INTERFACE SCSI C87x Ultra Wide Single-Ended
target 5 0/0/2/0.2 tgt CLAIMED DEVICE
disk 2 0/0/2/0.2.0 sdisk CLAIMED DEVICE HP 18.2GATLAS10K3_18_SCA
/dev/dsk/c2t2d0 /dev/rdsk/c2t2d0
target 6 0/0/2/0.7 tgt CLAIMED DEVICE
ctl 2 0/0/2/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c2t7d0
ext_bus 3 0/0/2/1 c720 CLAIMED INTERFACE SCSI C87x Fast Wide Single-Ended
target 7 0/0/2/1.7 tgt CLAIMED DEVICE
ctl 3 0/0/2/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c3t7d0
tty 1 0/0/4/0 func0 CLAIMED INTERFACE PCI BaseSystem (103c128d)
tty 0 0/0/4/1 asio0 CLAIMED INTERFACE PCI Serial (103c1048)
/dev/GSPdiag1 /dev/diag/mux0 /dev/mux0 /dev/tty0p0 /dev/tty0p2 /dev/tty0p3 /dev/tty0p4
ba 1 0/1 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ba 2 0/2 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ba 3 0/3 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ba 4 0/4 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ba 5 0/5 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ba 6 0/8 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ext_bus 4 0/8/0/0 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
target 8 0/8/0/0.1 tgt CLAIMED DEVICE
tape 4 0/8/0/0.1.0 stape CLAIMED DEVICE HP Ultrium 1-SCSI
/dev/rmt/4m /dev/rmt/4mn /dev/rmt/c4t1d0BEST /dev/rmt/c4t1d0BESTn
/dev/rmt/4mb /dev/rmt/4mnb /dev/rmt/c4t1d0BESTb /dev/rmt/c4t1d0BESTnb
target 9 0/8/0/0.7 tgt CLAIMED DEVICE
ctl 4 0/8/0/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c4t7d0
ext_bus 5 0/8/0/1 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
target 10 0/8/0/1.0 tgt NO_HW DEVICE
disk 3 0/8/0/1.0.0 sdisk NO_HW DEVICE HP 36.4GMAP3367NC
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d0
target 11 0/8/0/1.1 tgt NO_HW DEVICE
disk 5 0/8/0/1.1.0 sdisk NO_HW DEVICE HP 36.4GST336706LC
/dev/dsk/c5t1d0 /dev/rdsk/c5t1d0
target 12 0/8/0/1.2 tgt NO_HW DEVICE
disk 7 0/8/0/1.2.0 sdisk NO_HW DEVICE HP 36.4GATLAS10K3_36_SCA
/dev/dsk/c5t2d0 /dev/rdsk/c5t2d0
target 13 0/8/0/1.3 tgt NO_HW DEVICE
disk 9 0/8/0/1.3.0 sdisk NO_HW DEVICE HP 36.4GST336706LC
/dev/dsk/c5t3d0 /dev/rdsk/c5t3d0
target 14 0/8/0/1.4 tgt NO_HW DEVICE
disk 12 0/8/0/1.4.0 sdisk NO_HW DEVICE HP 36.4GATLAS10K3_36_SCA
/dev/dsk/c5t4d0 /dev/rdsk/c5t4d0
target 15 0/8/0/1.7 tgt CLAIMED DEVICE
ctl 5 0/8/0/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c5t7d0
target 16 0/8/0/1.8 tgt NO_HW DEVICE
disk 17 0/8/0/1.8.0 sdisk NO_HW DEVICE HP 36.4GST336706LC
/dev/dsk/c5t8d0 /dev/rdsk/c5t8d0
target 17 0/8/0/1.9 tgt NO_HW DEVICE
disk 18 0/8/0/1.9.0 sdisk NO_HW DEVICE HP 36.4GST336706LC
/dev/dsk/c5t9d0 /dev/rdsk/c5t9d0
target 18 0/8/0/1.10 tgt NO_HW DEVICE
disk 19 0/8/0/1.10.0 sdisk NO_HW DEVICE HP 36.4GST336706LC
/dev/dsk/c5t10d0 /dev/rdsk/c5t10d0
target 19 0/8/0/1.11 tgt NO_HW DEVICE
disk 20 0/8/0/1.11.0 sdisk NO_HW DEVICE HP 36.4GST336706LC
/dev/dsk/c5t11d0 /dev/rdsk/c5t11d0
target 20 0/8/0/1.12 tgt NO_HW DEVICE
disk 23 0/8/0/1.12.0 sdisk NO_HW DEVICE HP 73.4GST373453LC
/dev/dsk/c5t12d0 /dev/rdsk/c5t12d0
target 21 0/8/0/1.13 tgt NO_HW DEVICE
disk 26 0/8/0/1.13.0 sdisk NO_HW DEVICE HP 36.4GST336706LC
/dev/dsk/c5t13d0 /dev/rdsk/c5t13d0
target 22 0/8/0/1.15 tgt NO_HW DEVICE
ctl 9 0/8/0/1.15.0 sctl NO_HW DEVICE HP A6491A
/dev/rscsi/c5t15d0
ba 7 0/9 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ba 8 0/10 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ba 9 0/10/0/0 PCItoPCI CLAIMED BUS_NEXUS PCItoPCI Bridge
lan 1 0/10/0/0/4/0 btlan CLAIMED INTERFACE HP A5506B PCI 10/100Base-TX 4 Port
/dev/diag/lan1 /dev/ether1 /dev/lan1
lan 2 0/10/0/0/5/0 btlan CLAIMED INTERFACE HP A5506B PCI 10/100Base-TX 4 Port
/dev/diag/lan2 /dev/ether2 /dev/lan2
lan 3 0/10/0/0/6/0 btlan CLAIMED INTERFACE HP A5506B PCI 10/100Base-TX 4 Port
/dev/diag/lan3 /dev/ether3 /dev/lan3
lan 4 0/10/0/0/7/0 btlan CLAIMED INTERFACE HP A5506B PCI 10/100Base-TX 4 Port
/dev/diag/lan4 /dev/ether4 /dev/lan4
ba 10 0/12 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
ext_bus 6 0/12/0/0 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
target 23 0/12/0/0.7 tgt CLAIMED DEVICE
ctl 6 0/12/0/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c6t7d0
ext_bus 7 0/12/0/1 c720 CLAIMED INTERFACE SCSI C896 Ultra Wide LVD
target 24 0/12/0/1.0 tgt CLAIMED DEVICE
disk 4 0/12/0/1.0.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC
/dev/dsk/c7t0d0 /dev/rdsk/c7t0d0
target 25 0/12/0/1.1 tgt CLAIMED DEVICE
disk 6 0/12/0/1.1.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC
/dev/dsk/c7t1d0 /dev/rdsk/c7t1d0
target 26 0/12/0/1.2 tgt CLAIMED DEVICE
disk 8 0/12/0/1.2.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC
/dev/dsk/c7t2d0 /dev/rdsk/c7t2d0
target 27 0/12/0/1.3 tgt CLAIMED DEVICE
disk 10 0/12/0/1.3.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC
/dev/dsk/c7t3d0 /dev/rdsk/c7t3d0
target 28 0/12/0/1.4 tgt CLAIMED DEVICE
disk 11 0/12/0/1.4.0 sdisk CLAIMED DEVICE HP 36.4GATLAS10K3_36_SCA
/dev/dsk/c7t4d0 /dev/rdsk/c7t4d0
target 29 0/12/0/1.6 tgt CLAIMED DEVICE
ctl 10 0/12/0/1.6.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c7t6d0
target 30 0/12/0/1.8 tgt CLAIMED DEVICE
disk 15 0/12/0/1.8.0 sdisk CLAIMED DEVICE HP 36.4GATLAS10K3_36_SCA
/dev/dsk/c7t8d0 /dev/rdsk/c7t8d0
target 31 0/12/0/1.9 tgt CLAIMED DEVICE
disk 16 0/12/0/1.9.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC
/dev/dsk/c7t9d0 /dev/rdsk/c7t9d0
target 32 0/12/0/1.10 tgt CLAIMED DEVICE
disk 21 0/12/0/1.10.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC
/dev/dsk/c7t10d0 /dev/rdsk/c7t10d0
target 33 0/12/0/1.11 tgt CLAIMED DEVICE
disk 22 0/12/0/1.11.0 sdisk CLAIMED DEVICE HP 36.4GST336706LC
/dev/dsk/c7t11d0 /dev/rdsk/c7t11d0
target 34 0/12/0/1.12 tgt CLAIMED DEVICE
disk 24 0/12/0/1.12.0 sdisk CLAIMED DEVICE HP 73.4GST373453LC
/dev/dsk/c7t12d0 /dev/rdsk/c7t12d0
target 35 0/12/0/1.13 tgt CLAIMED DEVICE
disk 27 0/12/0/1.13.0 sdisk CLAIMED DEVICE HP 36.4GATLAS10K3_36_SCA
/dev/dsk/c7t13d0 /dev/rdsk/c7t13d0
target 36 0/12/0/1.15 tgt CLAIMED DEVICE
ctl 8 0/12/0/1.15.0 sctl CLAIMED DEVICE HP A6491A
/dev/rscsi/c7t15d0
pbc 0 32 pbc CLAIMED BUS_NEXUS Bus Converter
processor 0 33 processor CLAIMED PROCESSOR Processor
pbc 1 96 pbc CLAIMED BUS_NEXUS Bus Converter
processor 1 97 processor CLAIMED PROCESSOR Processor
memory 0 192 memory CLAIMED MEMORY Memory

[Torsten.]

ctl 10 0/12/0/1.6.0 sctl CLAIMED DEVICE Initiator

ID 6

ctl 6 0/12/0/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c6t7d0

ID 7


To make it easier, I would configure both controllers inside the box to same value, e.g.
server1 is using ID 6 on both controllers
server2 is using ID 7