About VXFEN tunable parameters

The section describes the VXFEN tunable parameters and how to reconfigure the VXFEN module.

Table: VXFEN tunable parameters describes the tunable parameters for the VXFEN driver.

Table: VXFEN tunable parameters

vxfen Parameter

Description and Values: Default, Minimum, and Maximum

dbg_log_size

Size of debug log in bytes

  • Values

    Default: 65536

    Minimum: 65536

    Maximum: 256K

vxfen_max_delay

Specifies the maximum number of seconds that the smaller sub-cluster waits before racing with larger sub-clusters for control of the coordinator disks when a split-brain occurs.

This value must be greater than the vxfen_max_delay value.

  • Values

    Default: 60

    Minimum: 1

    Maximum: 60

vxfen_min_delay

Specifies the minimum number of seconds that the smaller sub-cluster waits before racing with larger sub-clusters for control of the coordinator disks when a split-brain occurs.

This value must be smaller than the vxfen_max_delay value.

  • Values

    Default: 1

    Minimum: 1

    Maximum: 60

vxfen_vxfnd_tmt

Specifies the time in seconds that the I/O fencing driver VxFEN waits for the I/O fencing daemon VXFEND to return after completing a given task.

  • Values

    Default: 60

    Minimum: 10

    Maximum: 600

In the event of a network partition, the smaller sub-cluster delays before racing for the coordinator disks. The time delayed allows a larger sub-cluster to win the race for the coordinator disks. The vxfen_max_delay and vxfen_min_delay parameters define the delay in seconds.