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Old 12-12-2012, 12:18 PM   #1
rafiahmadjan
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Registered: Nov 2012
Posts: 9

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Lightbulb Rhel 6---multipathing


I have two disk coming from hitachi storage to the server,with the single path ,now i want to add another path to it,kindly suggest on how to find the WWID of the local disks(i have two local seagate disk in RAID),how do i blacklist the same in the multipath the same(how do i find its wwid),moreover how do multipath the device coming from storage{do i put the WWID(where to get it) in the multipaths block of the multipath.conf}.kindly suggest on the same

i would really appreciate the help

Regards
Rafi
 
Old 12-12-2012, 12:32 PM   #2
custangro
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Registered: Nov 2006
Location: California
Distribution: Fedora , CentOS , RHEL
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Here is a great resource

https://access.redhat.com/knowledge/..._overview.html

https://access.redhat.com/knowledge/...pio_setup.html

-C

Last edited by custangro; 12-12-2012 at 12:36 PM.
 
Old 12-13-2012, 12:42 AM   #3
rafiahmadjan
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Registered: Nov 2012
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Dear custangro,

Here is the ouput of lsscsi on the server

[0:0:0:0] disk SEAGATE ST9300605SS CS06 -
[0:0:1:0] disk SEAGATE ST9300605SS CS06 -
[0:1:0:0] disk Dell Virtual Disk 1028 /dev/sda----what is this disk
[1:0:0:0] disk HITACHI OPEN-V 6008 /dev/sdd
[1:0:0:1] disk HITACHI OPEN-V 6008 /dev/sde
[3:0:0:0] disk HITACHI OPEN-V 6008 /dev/sdb
[3:0:0:1] disk HITACHI OPEN-V 6008 /dev/sdc
[7:0:0:0] cd/dvd PLDS DVD-ROM DS-8D3SH HD51 /dev/sr0


The four Hitachi disks are actually two disks coming from the storage...with dual path
How do i get the wwid of local disks to put into the blacklist section of the multipath.conf file
how do (what) get the wwid of disks coming through fibre(do i have to mention them in the multipath section of the multipath.conf


Regards
Rafi
 
  


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