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тАО05-25-2007 02:27 AM
тАО05-25-2007 02:27 AM
I have a rx7620 system with HP11iv2 installed.
This server is connected to 2 IBM disks attached through 4 Fibre Channels. The 2 IBM disks belong to a SAN.
The strange situation I see is that each disk appears in 12 entries in the output of ioscan -fnC disk (3 entries for fibre channel path)
Why does it occur? I'm expecting that the disk appears only 1 time.
# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
===========================================================================
disk 2 1/0/0/3/0.6.0 sdisk CLAIMED DEVICE HP 73.4GST373454LC
/dev/dsk/c0t6d0 /dev/dsk/c0t6d0s2 /dev/rdsk/c0t6d0 /dev/rdsk/c0t6d0s2
/dev/dsk/c0t6d0s1 /dev/dsk/c0t6d0s3 /dev/rdsk/c0t6d0s1 /dev/rdsk/c0t6d0s3
disk 1 1/0/0/3/1.2.0 sdisk CLAIMED DEVICE _NEC DVD_RW ND-3550A
/dev/dsk/c1t2d0 /dev/rdsk/c1t2d0
disk 0 1/0/2/1/0.8.0 sdisk CLAIMED DEVICE HP 73.4GMAW3073NC
/dev/dsk/c4t8d0 /dev/rdsk/c4t8d0
disk 3 1/0/4/1/0.8.0 sdisk CLAIMED DEVICE HP 73.4GMAW3073NC
/dev/dsk/c6t8d0 /dev/rdsk/c6t8d0
disk 12 1/0/6/1/0/4/0.46.0.5.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c19t0d0 /dev/rdsk/c19t0d0
disk 28 1/0/6/1/0/4/0.46.0.5.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 14 1/0/6/1/0/4/0.46.0.10.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c21t0d0 /dev/rdsk/c21t0d0
disk 29 1/0/6/1/0/4/0.46.0.10.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 15 1/0/6/1/0/4/0.46.0.11.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c23t0d0 /dev/rdsk/c23t0d0
disk 30 1/0/6/1/0/4/0.46.0.11.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 16 1/0/10/1/0/4/0.61.0.4.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c25t0d0 /dev/rdsk/c25t0d0
disk 32 1/0/10/1/0/4/0.61.0.4.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 20 1/0/10/1/0/4/0.61.0.7.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c27t0d0 /dev/rdsk/c27t0d0
disk 33 1/0/10/1/0/4/0.61.0.7.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 21 1/0/10/1/0/4/0.61.0.11.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c29t0d0 /dev/rdsk/c29t0d0
disk 31 1/0/10/1/0/4/0.61.0.11.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 23 1/0/12/1/0/4/0.46.0.6.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c31t0d0 /dev/rdsk/c31t0d0
disk 34 1/0/12/1/0/4/0.46.0.6.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 25 1/0/12/1/0/4/0.46.0.9.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c33t0d0 /dev/rdsk/c33t0d0
disk 36 1/0/12/1/0/4/0.46.0.9.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 27 1/0/12/1/0/4/0.46.0.12.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c35t0d0 /dev/rdsk/c35t0d0
disk 35 1/0/12/1/0/4/0.46.0.12.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 5 1/0/14/1/0/4/0.61.0.1.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c13t0d0 /dev/rdsk/c13t0d0
disk 37 1/0/14/1/0/4/0.61.0.1.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 6 1/0/14/1/0/4/0.61.0.8.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c15t0d0 /dev/rdsk/c15t0d0
disk 38 1/0/14/1/0/4/0.61.0.8.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
disk 9 1/0/14/1/0/4/0.61.0.10.98.0.0 sdisk CLAIMED DEVICE IBM 2107900
/dev/dsk/c17t0d0 /dev/rdsk/c17t0d0
disk 39 1/0/14/1/0/4/0.61.0.10.100.0.0 sdisk CLAIMED DEVICE IBM 2107900
I checked that a IBM disk x spans over the fibre channels and it is identified by the same BUS number (98 or 100)
Would be possible to have a command that lists all disks (internal and external), but with only 1 entry for each disk?
Below some other info about the hw configuration.
The machine has 4 HBAs.
The server is connected to 2 switches; each connection with a switch is performed through 2 ports.
# ioscan -funC fc
Class I H/W Path Driver S/W State H/W Type Description
===========================================================================
fc 0 1/0/6/1/0/4/0 fcd CLAIMED INTERFACE HP A9784-60002 PCI/PCI-X Fibre Channel FC/GigE Combo Adapter (FC Port 1)
/dev/fcd0
fc 1 1/0/10/1/0/4/0 fcd CLAIMED INTERFACE HP A9784-60002 PCI/PCI-X Fibre Channel FC/GigE Combo Adapter (FC Port 1)
/dev/fcd1
fc 2 1/0/12/1/0/4/0 fcd CLAIMED INTERFACE HP A9784-60002 PCI/PCI-X Fibre Channel FC/GigE Combo Adapter (FC Port 1)
/dev/fcd2
fc 3 1/0/14/1/0/4/0 fcd CLAIMED INTERFACE HP A9784-60002 PCI/PCI-X Fibre Channel FC/GigE Combo Adapter (FC Port 1)
/dev/fcd3
# ioscan -funC fcp
Class I H/W Path Driver S/W State H/W Type Description
===========================================================================
fcp 0 1/0/6/1/0/4/0.46 fcd_fcp CLAIMED INTERFACE FCP Domain
fcp 1 1/0/10/1/0/4/0.61 fcd_fcp CLAIMED INTERFACE FCP Domain
fcp 2 1/0/12/1/0/4/0.46 fcd_fcp CLAIMED INTERFACE FCP Domain
fcp 3 1/0/14/1/0/4/0.61 fcd_fcp CLAIMED INTERFACE FCP Domain
# ioscan -funC ext_bus
Class I H/W Path Driver S/W State H/W Type Description
===========================================================================
ext_bus 0 1/0/0/3/0 c8xx CLAIMED INTERFACE SCSI C1010 Ultra160 Wide LVD A6793-60001
ext_bus 1 1/0/0/3/1 c8xx CLAIMED INTERFACE SCSI C1010 Ultra Wide Single-Ended A6793-60001
ext_bus 2 1/0/1/1/0/1/0 c8xx CLAIMED INTERFACE SCSI C1010 Ultra160 Wide LVD
ext_bus 3 1/0/1/1/0/1/1 c8xx CLAIMED INTERFACE SCSI C1010 Ultra160 Wide LVD
ext_bus 4 1/0/2/1/0 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt4
ext_bus 5 1/0/2/1/1 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt5
ext_bus 6 1/0/4/1/0 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt6
ext_bus 7 1/0/4/1/1 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt7
ext_bus 18 1/0/6/1/0/4/0.46.0.5.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 19 1/0/6/1/0/4/0.46.0.5.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 36 1/0/6/1/0/4/0.46.0.5.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 20 1/0/6/1/0/4/0.46.0.10.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 21 1/0/6/1/0/4/0.46.0.10.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 37 1/0/6/1/0/4/0.46.0.10.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 22 1/0/6/1/0/4/0.46.0.11.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 23 1/0/6/1/0/4/0.46.0.11.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 38 1/0/6/1/0/4/0.46.0.11.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 8 1/0/6/1/0/4/0.46.0.255.0 fcd_vbus CLAIMED INTERFACE FCP Device Interface
ext_bus 24 1/0/10/1/0/4/0.61.0.4.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 25 1/0/10/1/0/4/0.61.0.4.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 39 1/0/10/1/0/4/0.61.0.4.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 26 1/0/10/1/0/4/0.61.0.7.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 27 1/0/10/1/0/4/0.61.0.7.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 40 1/0/10/1/0/4/0.61.0.7.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 28 1/0/10/1/0/4/0.61.0.11.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 29 1/0/10/1/0/4/0.61.0.11.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 41 1/0/10/1/0/4/0.61.0.11.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 9 1/0/10/1/0/4/0.61.0.255.0 fcd_vbus CLAIMED INTERFACE FCP Device Interface
ext_bus 30 1/0/12/1/0/4/0.46.0.6.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 31 1/0/12/1/0/4/0.46.0.6.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 42 1/0/12/1/0/4/0.46.0.6.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 32 1/0/12/1/0/4/0.46.0.9.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 33 1/0/12/1/0/4/0.46.0.9.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 43 1/0/12/1/0/4/0.46.0.9.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 34 1/0/12/1/0/4/0.46.0.12.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 35 1/0/12/1/0/4/0.46.0.12.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 44 1/0/12/1/0/4/0.46.0.12.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 10 1/0/12/1/0/4/0.46.0.255.0 fcd_vbus CLAIMED INTERFACE FCP Device Interface
ext_bus 12 1/0/14/1/0/4/0.61.0.1.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 13 1/0/14/1/0/4/0.61.0.1.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 45 1/0/14/1/0/4/0.61.0.1.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 14 1/0/14/1/0/4/0.61.0.8.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 15 1/0/14/1/0/4/0.61.0.8.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 46 1/0/14/1/0/4/0.61.0.8.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 16 1/0/14/1/0/4/0.61.0.10.96 fcd_vbus NO_HW INTERFACE FCP Array Interface
ext_bus 17 1/0/14/1/0/4/0.61.0.10.98 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 47 1/0/14/1/0/4/0.61.0.10.100 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 11 1/0/14/1/0/4/0.61.0.255.0 fcd_vbus CLAIMED INTERFACE FCP Device Interface
I need to catch in a unique entry each disk in SAN.
Thanks a lot in advance for your support
Best regards
Michele
Solved! Go to Solution.
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тАО05-25-2007 02:58 AM
тАО05-25-2007 02:58 AM
Re: a disk in SAN is viewed several times with ioscan
This situation is solved by using a multipath software, like secure path, or using PVLINKS in HP-UX, where you add each device to the same volume group.
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тАО05-25-2007 03:05 AM
тАО05-25-2007 03:05 AM
Re: a disk in SAN is viewed several times with ioscan
thanks a lot for your answer. Please could you send me the links to these products?
I need to check if they are installed in my server.
Thanks
Michele
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тАО05-25-2007 03:15 AM
тАО05-25-2007 03:15 AM
Solutiontry having a look at this link..this will guide you on how to proceed on logical volume mgmt
http://docs.hp.com/en/B5158-90044/ch04s05.html
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тАО05-25-2007 03:26 AM
тАО05-25-2007 03:26 AM
Re: a disk in SAN is viewed several times with ioscan
for securepath for hp-UX.. see the link below with its releases for proper specifications.
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=1825336&prodTypeId=12169&prodSeriesId=471465&swLang=8&taskId=135&swEnvOID=7
regards,
Vivek
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тАО05-28-2007 12:44 AM
тАО05-28-2007 12:44 AM
Re: a disk in SAN is viewed several times with ioscan
Perhaps you could check if you buy a multipathing software along with your storage, IBM provide SDD for multipathing on HPUX
http://www.redbooks.ibm.com/abstracts/sg246295.html?Open
regards,
Sandy
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тАО06-27-2007 08:19 PM
тАО06-27-2007 08:19 PM
Re: a disk in SAN is viewed several times with ioscan
I do not know how to increase the points assigned to Sandy.
Please let me know if it is possible.
Regards
Michele