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Re: sam showing two/three volume groups having the same path

 
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slydmin
Advisor

sam showing two/three volume groups having the same path

Here is the setup

HPUX B.11.11, connected to XP SAN 10k using qlogic fibrechannel card (i will post the verion/name soon)



The storage administrator presented a total of 7 LUs to the server. (LUs: 600GB, 600GB, 100GB 100GB, 100GB, 300GB)

If I use SAM to look at and create new volume groups from these presented LUs, I see something unusual. I see the first 3 LUs (600, 600, 100)correctly, however the fourth one shows up as a 100 GB size with 6 paths to the LU. And I don't the two remaining LUs (100GB , 300GB).

Now, I was able to add the 4th and 5th LUs as volume groups vg_p04 and vg_p05 using the command line. These show up without a problem on bdf (mounted as /p04 and /p05). But when I look at disk-devices from within SAM, I see an output where vg_p04/vg_p05 are one the same LU with 4 paths to the LU.(image attached)


Following is the ioscan output when all of the LUs are presented to the server.


ioscan -fnC disk provides output:
Class I H/W Path Driver S/W State H/W Type Description
==========================================================================
disk 0 0/0/0/3/0.5.0 sdisk CLAIMED DEVICE HP 73.4GST373453LC
/dev/dsk/c0t5d0 /dev/rdsk/c0t5d0
disk 1 0/0/0/3/0.6.0 sdisk CLAIMED DEVICE HP 73.4GST373453LC
/dev/dsk/c0t6d0 /dev/rdsk/c0t6d0
disk 7 0/0/4/1/0.11.23.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V*6
/dev/dsk/c10t0d0 /dev/rdsk/c10t0d0
disk 15 0/0/4/1/0.11.23.0.0.0.1 sdisk CLAIMED DEVICE HP OPEN-V*6
/dev/dsk/c10t0d1 /dev/rdsk/c10t0d1
disk 16 0/0/4/1/0.11.23.0.0.0.2 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c10t0d2 /dev/rdsk/c10t0d2
disk 17 0/0/4/1/0.11.23.0.0.0.3 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c10t0d3 /dev/rdsk/c10t0d3
disk 52 0/0/4/1/0.11.23.0.0.0.4 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c10t0d4 /dev/rdsk/c10t0d4
disk 53 0/0/4/1/0.11.23.0.0.0.5 sdisk CLAIMED DEVICE HP OPEN-V*3
/dev/dsk/c10t0d5 /dev/rdsk/c10t0d5
disk 18 0/0/4/1/0.11.23.0.0.1.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t1d0 /dev/rdsk/c10t1d0
disk 19 0/0/4/1/0.11.23.0.0.2.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t2d0 /dev/rdsk/c10t2d0
disk 20 0/0/4/1/0.11.23.0.0.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t3d0 /dev/rdsk/c10t3d0
disk 21 0/0/4/1/0.11.23.0.0.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t4d0 /dev/rdsk/c10t4d0
disk 22 0/0/4/1/0.11.23.0.0.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t5d0 /dev/rdsk/c10t5d0
disk 23 0/0/4/1/0.11.23.0.0.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t6d0 /dev/rdsk/c10t6d0
disk 24 0/0/4/1/0.11.23.0.0.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t7d0 /dev/rdsk/c10t7d0
disk 25 0/0/4/1/0.11.23.0.0.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t8d0 /dev/rdsk/c10t8d0
disk 26 0/0/4/1/0.11.23.0.0.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t9d0 /dev/rdsk/c10t9d0
disk 27 0/0/4/1/0.11.23.0.0.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t10d0 /dev/rdsk/c10t10d0
disk 28 0/0/4/1/0.11.23.0.0.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t11d0 /dev/rdsk/c10t11d0
disk 29 0/0/4/1/0.11.23.0.0.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t12d0 /dev/rdsk/c10t12d0
disk 30 0/0/4/1/0.11.23.0.0.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t13d0 /dev/rdsk/c10t13d0
disk 31 0/0/4/1/0.11.23.0.0.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t14d0 /dev/rdsk/c10t14d0
disk 32 0/0/4/1/0.11.23.0.0.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c10t15d0 /dev/rdsk/c10t15d0
disk 6 0/0/4/1/1.10.23.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V*6
/dev/dsk/c11t0d0 /dev/rdsk/c11t0d0
disk 14 0/0/4/1/1.10.23.0.0.0.1 sdisk CLAIMED DEVICE HP OPEN-V*6
/dev/dsk/c11t0d1 /dev/rdsk/c11t0d1
disk 33 0/0/4/1/1.10.23.0.0.0.2 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c11t0d2 /dev/rdsk/c11t0d2
disk 34 0/0/4/1/1.10.23.0.0.0.3 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c11t0d3 /dev/rdsk/c11t0d3
disk 35 0/0/4/1/1.10.23.0.0.0.4 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c11t0d4 /dev/rdsk/c11t0d4
disk 51 0/0/4/1/1.10.23.0.0.0.5 sdisk CLAIMED DEVICE HP OPEN-V*3
/dev/dsk/c11t0d5 /dev/rdsk/c11t0d5
disk 36 0/0/4/1/1.10.23.0.0.1.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t1d0 /dev/rdsk/c11t1d0
disk 37 0/0/4/1/1.10.23.0.0.2.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t2d0 /dev/rdsk/c11t2d0
disk 38 0/0/4/1/1.10.23.0.0.3.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t3d0 /dev/rdsk/c11t3d0
disk 39 0/0/4/1/1.10.23.0.0.4.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t4d0 /dev/rdsk/c11t4d0
disk 40 0/0/4/1/1.10.23.0.0.5.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t5d0 /dev/rdsk/c11t5d0
disk 41 0/0/4/1/1.10.23.0.0.6.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t6d0 /dev/rdsk/c11t6d0
disk 42 0/0/4/1/1.10.23.0.0.7.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t7d0 /dev/rdsk/c11t7d0
disk 43 0/0/4/1/1.10.23.0.0.8.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t8d0 /dev/rdsk/c11t8d0
disk 44 0/0/4/1/1.10.23.0.0.9.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t9d0 /dev/rdsk/c11t9d0
disk 45 0/0/4/1/1.10.23.0.0.10.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t10d0 /dev/rdsk/c11t10d0
disk 46 0/0/4/1/1.10.23.0.0.11.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t11d0 /dev/rdsk/c11t11d0
disk 47 0/0/4/1/1.10.23.0.0.12.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t12d0 /dev/rdsk/c11t12d0
disk 48 0/0/4/1/1.10.23.0.0.13.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t13d0 /dev/rdsk/c11t13d0
disk 49 0/0/4/1/1.10.23.0.0.14.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t14d0 /dev/rdsk/c11t14d0
disk 50 0/0/4/1/1.10.23.0.0.15.0 sdisk CLAIMED DEVICE HP DISK-SUBSYSTEM
/dev/dsk/c11t15d0 /dev/rdsk/c11t15d0
disk 5 0/0/8/1/0/1/0.2.0 sdisk CLAIMED DEVICE HP DVD-ROM 305
/dev/dsk/c2t2d0 /dev/rdsk/c2t2d0
disk 2 1/0/0/3/0.6.0 sdisk CLAIMED DEVICE HP 73.4GST373453LC
/dev/dsk/c4t6d0 /dev/rdsk/c4t6d0
disk 3 1/0/0/3/1.2.0 sdisk CLAIMED DEVICE HP DVD-ROM 305
/dev/dsk/c5t2d0 /dev/rdsk/c5t2d0
disk 4 1/0/1/1/0/1/1.6.0 sdisk CLAIMED DEVICE HP 73.4GST373453LC
/dev/dsk/c7t6d0 /dev/rdsk/c7t6d0


What could be the problem with SAM showing incorrect multiple paths to the same LU?

Thanks in advance.
3 REPLIES 3
slydmin
Advisor

Re: sam showing two/three volume groups having the same path

The commands I used to create the vg/lvs are
pvcreate /dev/rdsk/c10t0d4
mkdir /dev/vg_p05
mknod /dev/vg_p05/group c 64 0x050000
vgcreate -s 32 /dev/vg_p05 /dev/dsk/c10t0d4
lvcreate -n lv_p05 -L 102144 /dev/vg_p05
newfs -F vxfs /dev/vg_p05/rlv_p05
/dev/vg_p05/lv_p05 /p05 vxfs defaults 0 2




Information about the fibre card:
ioscan output
==================================================================
fc 0 0/0/4/1/0 fcd CLAIMED INTERFACE HP 2Gb Dual Port PCI/PCI-X Fibre Channel Adapter (Port 1)
/dev/fcd0
fc 1 0/0/4/1/1 fcd CLAIMED INTERFACE HP 2Gb Dual Port PCI/PCI-X Fibre Channel Adapter (Port 2)
/dev/fcd1




fcmsutil output:
V I T A L P R O D U C T D A T A
--------- ------------- -------

Product Description : "Dual Port 2Gbps/1Gbps Fibre Channel Universal PCI-X Adapter"

Part number : "A6826-60001"

Engineering Date Code : "A-4450"

Part Serial number : "US00033467"

Misc. Information : "PW=15W;PCI 66MHZ;PCI-X 133MHZ"

Mfd. Date : "4507"

Check Sum : 0xba

EFI version : "001.42"

ROM Firmware version : "003.003.150"

Asset Tag : "NA"

Tim Nelson
Honored Contributor
Solution

Re: sam showing two/three volume groups having the same path

SAM bad, using real unix commands is good.

After many years you will learn not to trust menu driven utilities, SAM has been buggy since its inception.

I would recommend to always check your configs and/or admin them with commands.

ioscan
pvcreate
pvdisplay
vgdisplay
vgcreate
vgextend
lvdispaly
lvcreate
lvextend
newfs
mkdir
vi /etc/fstab
mount


Avinash Agarkar
Valued Contributor

Re: sam showing two/three volume groups having the same path

Hi Dear,

Please do not create the new vg's lv's with
SAM, discover the new luns and use command line to create the same.

Thanks,
Avinash
Great Power Comes With Great Responsibility