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 .
| 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 10.0.2.179. |
| 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:
<fencedevices> <fencedevice agent="fence_virt" name="fencevirt1" serial_device="/dev/ttyS1" serial_params="19200, 8N1"/> </fencedevices>
