SFEX_INIT(8) System Administration Utilities SFEX_INIT(8)NAME
sfex_init - Part of the Linux-HA project
SYNOPSIS
sfex_init [-Lh] [-n numlocks] device
DESCRIPTION
Initialize Shared Disk File EXclusiveness Control Program (SF-EX) meta-data.
OPTIONS -n numlocks
The number of storing lock data is specified by integer of one or more. When you want to control two or more resources by one meta-
data, you set the value of two or more to numlocks. Default is 1.
device This is file path which stored meta-data. It is usually expressed in "/dev/...", because it is partition on the shared disk.
sfex_init 1.0.3 May 2010 SFEX_INIT(8)
Check Out this Related Man Page
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)
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