OCF_HEARTBEAT_SFEX(7)						OCF resource agents					     OCF_HEARTBEAT_SFEX(7)

NAME

       ocf_heartbeat_sfex - Manages exclusive access to shared storage using Shared Disk File EXclusiveness (SF-EX)

SYNOPSIS

       sfex [start | stop | monitor | meta-data | validate-all]

DESCRIPTION

       Resource script for SF-EX. It manages a shared storage medium exclusively .

SUPPORTED PARAMETERS

       device
	   Block device path that stores exclusive control data.  (required, string, no default)

       index
	   Location in block device where exclusive control data is stored. 1 or more is specified. Default is 1.  (optional, integer, default 1)

       collision_timeout
	   Waiting time when a collision of lock acquisition is detected. Default is 1 second.	(optional, integer, default 1)

       monitor_interval
	   Monitor interval(sec). Default is 10 seconds (optional, integer, default 10)

       lock_timeout
	   Valid term of lock(sec). Default is 100 seconds. The lock_timeout is calculated by the following formula. .sp lock_timeout =
	   monitor_interval + "The expiration time of the lock" .sp We suggest 90 seconds as a default value of the "The expiration time of the
	   lock", but you should change it in consideration of access delay to the shared disk and the switch time of the multipath driver. .sp
	   The lock timeout have an impact on start action timeout because start action timeout value is calculated by the following formula. .sp
	   start timeout = collision_timeout + lock_timeout + "safety margin" .sp The "safety margin" is decided within the range of about 10-20
	   seconds(It depends on your system requirement).  (optional, integer, default 100)

SUPPORTED ACTIONS

       This resource agent supports the following actions (operations):

       start
	   Starts the resource. Suggested minimum timeout: 120s.

       stop
	   Stops the resource. Suggested minimum timeout: 20s.

       monitor
	   Performs a detailed status check. Suggested minimum timeout: 10s. Suggested interval: 10s.

       meta-data
	   Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5s.

       validate-all
	   Performs a validation of the resource configuration. Suggested minimum timeout: 5s.

EXAMPLE

       The following is an example configuration for a sfex resource using the crm(8) shell:

	   primitive p_sfex ocf:heartbeat:sfex 
	     params 
	       device=string 
	     op monitor depth="0" timeout="10s" interval="10s"

SEE ALSO

       http://www.linux-ha.org/wiki/sfex_(resource_agent)

AUTHOR

       Linux-HA contributors (see the resource agent source for information about individual authors)

resource-agents UNKNOWN 					    03/09/2014						     OCF_HEARTBEAT_SFEX(7)