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тАО02-14-2008 07:10 AM
тАО02-14-2008 07:10 AM
Redhat V4 Update 5 multipath to HP HP XP24000
Is it possible to use multipath to config the this type of SAN.
If so could the multipath.conf entry be show in a thread...
If not what software could be used to do the config of the SAN
If so could the multipath.conf entry be show in a thread...
If not what software could be used to do the config of the SAN
2 REPLIES 2
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тАО02-14-2008 03:39 PM
тАО02-14-2008 03:39 PM
Re: Redhat V4 Update 5 multipath to HP HP XP24000
Shalom,
Red hat has basic non load balancing multipath built in. Part of the standard install set.
SEP
Red hat has basic non load balancing multipath built in. Part of the standard install set.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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тАО03-05-2008 05:35 AM
тАО03-05-2008 05:35 AM
Re: Redhat V4 Update 5 multipath to HP HP XP24000
I've recently been over this issue with an HP instructor during a HP SAN training class.
Multipath will support connecting to your XP. As Steve stated, the "load balancing" is not a true one, it is a round-robin approach of firing packets down the paths sequentially, irregardless of their payload size.
In the multipath.conf file, ensure that you comment out the "blacklist dev node" section near the top of the file.
Then re-sense the fabric:
echo "1" > /sys/class/fc_host/host0/issue_lip
echo "- - -" > /sys/class/scsi_host/host0/scan
After you've detected your devices you can specify what type of access they get ( round robin, etc ) in the multipath.conf file. Examples are included within the file.
Keep in mind, if you have a device in /etc/fstab to be mounted from the fabric at boot time, you'll need the entry in /etc/multipath.conf for it to work. Otherwise, you'll be at the console commenting it out of fstab and continuing the boot.
Hope this helps.
Multipath will support connecting to your XP. As Steve stated, the "load balancing" is not a true one, it is a round-robin approach of firing packets down the paths sequentially, irregardless of their payload size.
In the multipath.conf file, ensure that you comment out the "blacklist dev node" section near the top of the file.
Then re-sense the fabric:
echo "1" > /sys/class/fc_host/host0/issue_lip
echo "- - -" > /sys/class/scsi_host/host0/scan
After you've detected your devices you can specify what type of access they get ( round robin, etc ) in the multipath.conf file. Examples are included within the file.
Keep in mind, if you have a device in /etc/fstab to be mounted from the fabric at boot time, you'll need the entry in /etc/multipath.conf for it to work. Otherwise, you'll be at the console commenting it out of fstab and continuing the boot.
Hope this helps.
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