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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.

	   lock_timeout	= monitor_interval + "The expiration time of the lock"

	   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.

	   The lock timeout have an impact on start action timeout because
	   start action	timeout	value is calculated by the following formula.

	   start timeout = collision_timeout + lock_timeout + "safety margin"

	   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	CRM SHELL
       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"

EXAMPLE	PCS
       The following is	an example configuration for a sfex resource using
       pcs(8)

	   pcs resource	create p_sfex ocf:heartbeat:sfex \
	     device=string \
	     op	monitor	depth="0" timeout="10s"	interval="10s"

SEE ALSO
       http://clusterlabs.org/

AUTHOR
       ClusterLabs contributors	(see the resource agent	source for information
       about individual	authors)

resource-agents	4.6.1		  02/28/2021		 OCF_HEARTBEAT_SFEX(7)

NAME | SYNOPSIS | DESCRIPTION | SUPPORTED PARAMETERS | SUPPORTED ACTIONS | EXAMPLE CRM SHELL | EXAMPLE PCS | SEE ALSO | AUTHOR

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