PRIMECLUSTER Global Disk Services Configuration and AdministrationGuide 4.7

4.8.1 Setting Tuning Parameters

Take the following steps to set the tuning parameters.

1. Add the following description to the /etc/opt/FJSVsdx/sdx.cf file on both nodes.

   • For the virtual environments (KVM and VMware) or physical environment

     SDX_NETMIRROR=on
     SDX_NETMIRROR_DISK_COUNT=8
     SDX_MV_STOP_WAIT_TIME=45
     ED_CMD_RETRY_COUNT=60
     ED_DRV_RETRY_COUNT=60

   • For the cloud environment or RHOSP environment

     SDX_NETMIRROR=on
     SDX_NETMIRROR_DISK_COUNT=8
     SDX_MV_STOP_WAIT_TIME=45
     ED_CMD_RETRY_COUNT=100
     ED_DRV_RETRY_COUNT=100

   Note

   If [Timeout value of PRIMECLUSTER] below is changed to be larger than the default value, change the value of [Parameters necessary to be changed] according to [Calculation formula of parameter value].

   [Timeout value of PRIMECLUSTER]

   • Timeout detection time of heartbeat of CF (CLUSTER_TIMEOUT)

   • Timeout value of shutdown facility

   [Parameters necessary to be changed]

   • ED_CMD_RETRY_COUNT

   • ED_DRV_RETRY_COUNT

   [Calculation formula of parameter value]

   (<Increased CLUSTER_TIMEOUT> + <Number of nodes> x<Increased timeout value of shutdown facility>) / 3 + 60

   If either one of the timeout values is changed to be smaller than the default value, calculate the increment of this timeout value as 0.

   Round the value to an integer.

   "Timeout value of shutdown facility" is the total value of timeout values of all the shutdown agents.

2. Restart both nodes.