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what is "multipathd: sd: hds prio" message on linux os?

Question asked by Hoon Jung on Jun 29, 2016

My customer use AMS2500.

"multipathd sd: hds prio" error occured once a month.

It occurs about once a month irregularly.

It occurred simultaneously on multiple servers. (15 server)

What is mean "multipathd: sd: hds prio" message on linux os?

 

*** environment

Storage : AMS2500

Storage port: 0A/1A

EMC SAN

Os : linux RHEL 6.6

 

*** OS log

May  5 02:01:11 sgbomdb multipathd: sdo: hds prio: SCSI error

May  5 02:01:11 sgbomdb multipathd: mpathn: load table [0 20971520 multipath 1 queue_if_no_path 0 2 1 round-robin 0 1 1 8:224 1 round-robin 0 1 1 65:192 1]

May  5 02:01:35 sgbomdb multipathd: mpathn: load table [0 20971520 multipath 1 queue_if_no_path 0 2 1 round-robin 0 1 1 8:224 1 round-robin 0 1 1 65:192 1]

 

*** multipath setting

#       }

        device {

vendor "HITACHI"

product "DF600F "

path_grouping_policy    multibus

        }

}


==>> This file should also apply to other option? (ex.. failback , prio , path_checker .... )

 

There is not any problems?

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