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fence_zvm(8) System Manager's Manual fence_zvm(8)

NAME

fence_zvm - Power Fencing agent for GFS on System z z/VM Clusters

SYNOPSIS

fence_zvm [OPTION]...

DESCRIPTION

fence_zvm is a Power Fencing agent used on a GFS virtual machine in a System z z/VM cluster. It uses the SMAPI interface to recycle an active image.

fence_zvm accepts options on the command line as well as from stdin. fence_node sends the options through stdin when it execs the agent. fence_zvm can be run by itself with command line options which is useful for testing.

Vendor URL: http://www.sinenomine.net

OPTIONS

-o --action
Fencing action: "off" - deactivate virtual machine; "on" - activate virtual machine; "metadata" - display device metadata" - describe fence agent parameters; "status" - state of virtual machine
--delay seconds
Time to delay fencing action in seconds
-n --plug target
Name of virtual machine to recycle.
-h --help
Print out a help message describing available options, then exit.
-a --ip smapi Server
Name of SMAPI server virtual machine. To be consistent with other fence agents this name is a little misleading: it is the name of the virtual machine not its IP address or hostname.
--zvmsys z/VM System
Name of z/VM on which the SMAPI server virtual machine resides. Optional - defaults to system on which the node is running.
-h --help
Display usage information
-t --timeout = < shutdown timeout >
Amount of grace time to give the virtual machine to shutdown cleanly before being forcibly terminated. Currently, this option is ignored.

STDIN PARAMETERS

agent = < param >
This option is used by fence_node(8) and is ignored by fence_zvm.
action = < action >
Fencing action: "off" - fence off device; "metadata" - display device metadata; "status" - state of device
port = < target >
Name of virtual machine to recycle.
ipaddr= < server name >
Name of SMAPI server virtual machine. To be consistent with other fence agents thisname is a little misleading: it is the name of the virtual machine not its IP address or hostname.
timeout = < shutdown timeout >
Amount of grace time to give the virtual machine to shutdown cleanly before being forcibly terminated. Currently, this option is ignored.

SEE ALSO

fence(8), fenced(8), fence_node(8)

NOTES

To use this agent the z/VM SMAPI service needs to be configured to allow the virtual machine running this agent to connect to it and issue the image_recycle operation. This involves updating the VSMWORK1 AUTHLIST VMSYS:VSMWORK1. file. The entry should look something similar to this: 

Column 1                   Column 66                Column 131
|                          |                        |
V                          V                        V
XXXXXXXX                   ALL                      IMAGE_OPERATIONS

Where XXXXXXX is the name of the virtual machine where the agent resides.

In addition, the VM directory entry that defines this virtual machine requires the IUCV ANY statement (or IUCV <userid of SMAPI Server>). This authorizes use of IUCV to connect to the SMAPI server.