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Multipath configuration and performance problem with offboard storage

  • 1.  Multipath configuration and performance problem with offboard storage

    Posted Mon February 21, 2022 07:58 AM
    Hello,

    We connected a offboard storage via multipath. But we are experiencing a serious performance problem. 4 is actively used, this is how it is in the settings in the conf file.
    But I couldn't see any error or multipath related logs in the messages logs.
    I request your support best practice for QRadar multipath conf. We use this storage on Event Processor.

    Thanks.
     
    mpatha (360002ac0000000000200f9d50001e2e1) dm-2 xxx,VV
size=15T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 1:0:0:0 sdc 8:32 active ready running
  |- 1:0:1:0 sdd 8:48 active ready running
  |- 3:0:0:0 sde 8:64 active ready running
  `- 3:0:1:0 sdf 8:80 active ready running

            device {
                vendor "xxx"
                product "VV"
                path_grouping_policy "group_by_prio"
                path_selector "service-time 0"
                path_checker "tur"
                features "1 queue_if_no_path"
                hardware_handler "1 alua"
                prio "alua"
                failback immediate
                rr_weight "uniform"
                no_path_retry 18
                fast_io_fail_tmo 10
                dev_loss_tmo "infinity"
        }​


    ------------------------------
    Ali Kerem Gunal
    ------------------------------


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