Solaris Tip of the Week: iSCSI Failover With COMSTAR
Here is a simple demo you can use for experimenting with high-availability iSCSI configurations with the COMSTAR stack to explore iSCSI failover. COMSTAR is a Solaris framework that centralizes and simplifies the deployment of SCSI targets.
OCF_HEARTBEAT_ISCSIT(7) OCF resource agents OCF_HEARTBEAT_ISCSIT(7)NAME
ocf_heartbeat_iSCSITarget - iSCSI target export agent
SYNOPSIS
iSCSITarget [start | stop | monitor | meta-data | validate-all]
DESCRIPTION
Manages iSCSI targets. An iSCSI target is a collection of SCSI Logical Units (LUs) exported via a daemon that speaks the iSCSI protocol.
SUPPORTED PARAMETERS
implementation
The iSCSI target daemon implementation. Must be one of "iet", "tgt", or "lio". If unspecified, an implementation is selected based on
the availability of management utilities, with "iet" being tried first, then "tgt", then "lio". (optional, string, no default)
iqn
The target iSCSI Qualified Name (IQN). Should follow the conventional "iqn.yyyy-mm.<reversed domain name>[:identifier]" syntax.
(unique, required, string, no default)
tid
The iSCSI target ID. Required for tgt. (unique, optional, integer, no default)
portals
iSCSI network portal addresses. Not supported by all implementations. If unset, the default is to create one portal that listens on .
(optional, string, default 0.0.0.0:3260)
allowed_initiators
Allowed initiators. A space-separated list of initiators allowed to connect to this target. Initiators may be listed in any syntax the
target implementation allows. If this parameter is empty or not set, access to this target will be allowed from any initiator.
(optional, string, no default)
incoming_username
A username used for incoming initiator authentication. If unspecified, allowed initiators will be able to log in without
authentication. This is a unique parameter, as it not allowed to re-use a single username across multiple target instances. (unique,
optional, string, no default)
incoming_password
A password used for incoming initiator authentication. (optional, string, no default)
additional_parameters
Additional target parameters. A space-separated list of "name=value" pairs which will be passed through to the iSCSI daemon's
management interface. The supported parameters are implementation dependent. Neither the name nor the value may contain whitespace.
(optional, string, no default)
SUPPORTED ACTIONS
This resource agent supports the following actions (operations):
start
Starts the resource. Suggested minimum timeout: 10.
stop
Stops the resource. Suggested minimum timeout: 10.
status
Suggested minimum timeout: 10. Suggested interval: 10.
monitor
Performs a detailed status check. Suggested minimum timeout: 10. Suggested interval: 10.
meta-data
Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5.
validate-all
Performs a validation of the resource configuration. Suggested minimum timeout: 10.
EXAMPLE
The following is an example configuration for a iSCSITarget resource using the crm(8) shell:
primitive p_iSCSITarget ocf:heartbeat:iSCSITarget
params
iqn=string
op monitor timeout="10" interval="10" depth="0"
SEE ALSO
http://www.linux-ha.org/wiki/iSCSITarget_(resource_agent)
AUTHOR
Linux-HA contributors (see the resource agent source for information about individual authors)
resource-agents UNKNOWN 03/09/2014 OCF_HEARTBEAT_ISCSIT(7)