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05-13-2010 01:54 PM
05-13-2010 01:54 PM
find out multipath
disk 15 0/2/0/0.115.48.19.0.0.2 sdisk CLAIMED DEVICE IBM 2145
/dev/dsk/c14t0d2 /dev/rdsk/c14t0d2
disk 16 0/2/0/0.115.48.19.0.0.3 sdisk CLAIMED DEVICE IBM 2145
/dev/dsk/c14t0d3 /dev/rdsk/c14t0d3
disk 17 0/2/0/0.115.48.19.0.0.4 sdisk CLAIMED DEVICE IBM 2145
/dev/dsk/c14t0d4 /dev/rdsk/c14t0d4
disk 18 0/2/0/0.115.48.19.0.0.5 sdisk CLAIMED DEVICE IBM 2145
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05-13-2010 03:14 PM
05-13-2010 03:14 PM
Re: find out multipath
From a straight ioscan, you can't identify if two ctds are pointing to the same physical device.
There is a way, though. I've attached a script called id_lv_disks which will go through the disks in an ioscan and check the vg header information against the volume groups in /etc/lvmtab.
It's not perfect - occasioanlly gets hung up on the dvd or cdrom; however, you should be able to update that fairly easily so it gets filtered out in your environment.
Hope that helps.
Doug O'Leary
------
Senior UNIX Admin
O'Leary Computers Inc
linkedin: http://www.linkedin.com/dkoleary
Resume: http://www.olearycomputers.com/resume.html
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05-13-2010 04:52 PM
05-13-2010 04:52 PM
Re: find out multipath
vgdisplay -v
if this has alternate disk in PV section then it has multipathing.
for power path
#powermt display dev=all
if it returns a output then u have multipathing
if you have VxVM
check for vxdmpadm
BR,
Kapil+
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05-13-2010 09:46 PM
05-13-2010 09:46 PM
Re: find out multipath
i think lun indicates IBM .. so doubut multipath will be there , multi path is for EMC products.
Poermt display is the command check the lun paths. Check the s/w installed :)
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05-13-2010 09:55 PM
05-13-2010 09:55 PM
Re: find out multipath
you could use this multipath SW :
EMC PowerPath
Hitachi HiCommand Dynamic Link Manager (HDLM)
HP StorageWorks Secure Path
- from the ioscan you are not able to identifiy if the multipath SW is installed and used, each multipath SW have a own commands.
mikap
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05-13-2010 11:40 PM
05-13-2010 11:40 PM
Re: find out multipath
I think this is DS8K storage.. there are some mutilipathing software available on IBM.
You have to download "sdd" software installed on your system.
If you already installed this.
do enable multipathing.
cfgvpath -r ----> to create vpath
showvpath -l
datapath query essmap ----> to get vpath details.
Let me know the storage model name , so that i can suggest the correct multipathing software
Gudluck
Prasanth
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05-13-2010 11:50 PM
05-13-2010 11:50 PM
Re: find out multipath
see this link.
http://www-01.ibm.com/support/docview.wss?rs=540&context=ST52G7&uid=ssg1S4000053&loc=en_US&cs=utf-8〈=en+en
sdd softwares are available for following IBM storage families
SDD Package for DS8000
SDD Package for DS6000
SDD Package for DS5000
SDD Package for DS3950
SDD Package for DS4000
Gudluck
Prasanth