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4.11. Fence Virt (Serial/VMChannel Mode)

Table 4.12, “Fence virt (Serial/VMChannel Mode)” lists the fence device parameters used by fence_virt, the fence agent for virtual machines using VM channel or serial mode .

Table 4.12. Fence virt (Serial/VMChannel Mode)

luci Field cluster.conf Attribute Description
Name name A name for the Fence virt fence device.
Serial Device serial_device On the host, the serial device must be mapped in each domain's configuration file. For more information, see the fence_virt man page. If this field is specified, it causes the fence_virt fencing agent to operate in serial mode. Not specifying a value causes the fence_virt fencing agent to operate in VM channel mode.
Serial Parameters serial_params The serial parameters. The default is 115200, 8N1.
VM Channel IP Address channel_address The channel IP. The default value is
Timeout (optional) timeout Fencing timeout, in seconds. The default value is 30.
Domain port (formerly domain) Virtual machine (domain UUID or name) to fence.
  ipport The channel port. The default value is 1229, which is the value used when configuring this fence device with luci.
Delay (optional) delay Fencing delay, in seconds. The fence agent will wait the specified number of seconds before attempting a fencing operation. The default value is 0.
The following command creates a fence device instance for virtual machines using serial mode.
ccs -f cluster.conf --addfencedev fencevirt1 agent=fence_virt serial_device=/dev/ttyS1 serial_params=19200, 8N1
The following is the cluster.conf entry for the fence_virt device:

   <fencedevice agent="fence_virt" name="fencevirt1" serial_device="/dev/ttyS1" serial_params="19200, 8N1"/>