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OpenSolaris 2009.06 - man page for iscsiadm (opensolaris section 1m)

iscsiadm(1M)						  System Administration Commands					      iscsiadm(1M)

NAME
iscsiadm - enable management of iSCSI initiators
SYNOPSIS
iscsiadm subcommand direct-object [options] [operand]
DESCRIPTION
The iscsiadm command enables management of the iSCSI (Internet SCSI) initiator on a host. iscsiadm is implemented as a set of subcommands, many with their own options, which are described in the section for that subcommand. Options not associated with a particular subcommand are described under OPTIONS. The iscsiadm command supports the following subcommands, which are described in detail in subsections that follow: add Adds element(s) to an object. list Lists element(s) of an object. modify Modifies attributes of an object. remove Removes an element from an object. The iscsiadm subcommands operate on a direct-object. These are described in the section for each subcommand. The iscsiadm command supports the Internet Storage Name Service (iSNS) for the discovery of iSCSI targets. The command supports the Chal- lenge Handshake Authentication Protocol (CHAP) for authentication. add Subcommand The syntax for the add subcommand is: # iscsiadm add direct_object [operands...] The add subcommand adds the following direct_objects: discovery-address discovery-address [...] Adds a target to a list of discovery addresses. A discovery address (as in the syntax shown below) is an IP address:port combination used in a SendTargets discovery session. Using this discovery approach, a target device can inform an initiator of the target address and target name of each target exposed by that device. Connection to a target is not attempted unless the SendTargets method of discov- ery has been enabled on the host. You enable this method with the modify subcommand. The discovery-address parameter is formatted as: <IP address>[:port] If port is not specified, the default of 3260 will be used. isns-server isns-server [...] Add an iSNS server to the list of iSNS server addresses. An iSNS server address (specified in the syntax shown below) is an IP address- port combination used in an iSNS discovery session. By using iSNS discovery, an iSNS server can provide an initiator with information about a portal and the name of each target that belongs to the same discovery domain as that of the initiator. Connection to the iSNS server is not attempted unless the iSNS method of discovery has been enabled on the host. You enable this method with the modify sub- command, described below. The isns-server parameter is formatted as: IP_address[:port] If a port is not specified, the default of 3205 is used. static-config static_target [...] Adds a target to the list of statically configured targets. A connection to the target will not be attempted unless the static configu- ration method of discovery has been enabled. The static_target parameter is formatted as: <target-name>,<target address>[:port-number][,tpgt] <target-name> can be up to 223 characters. list Subcommand The syntax for the list subcommand is: # iscsiadm list direct-object [options] The list subcommand displays data for the following direct-objects: discovery Lists the discovery methods and their current activation state, enabled or disabled. Discovery methods are: o iSNS (Internet Storage Name Service) o Static o SendTargets initiator-node Lists information for the initiator node on the host. The iSCSI initiator node represents a logical HBA and is a logical host connec- tion point for iSCSI targets. The parameter values listed in the response are default parameter settings for the initiator. Each con- nected target for an initiator can have parameter values that differ from the parameter values on the initiator node. static-config [static_target[, ...]] Lists the target name and address for specified targets or, if no static targets are specified, all statically discovered targets. target [-S] [-v] [target[, ...]] Lists a target's current parameters, connection state, and which method was used for the target's discovery. Reports information for specified targets or, if no targets are specified, all targets that have been discovered or have had parameters modified by the modify target subcommand. When used with the -S option for a specified target, this subcommand returns: o target name o logical unit number o vendor ID o product ID o OS device name (for example, /dev/rdsk/c0t2d0s0) The -v options gives more details, such as the current login parameters, the detailed connection information, and the discovery method used to discover the target. A return of NA as the discovery method parameter indicates that the target was created with a iscsiadm modify target-param command and does not exist as a discovered object. To remove such targets, use iscsiadm remove target-param. target-param [-v] target [...] Lists a target's default and user-defined parameters. discovery-address [-v] [discovery-address[, ...]] Lists the discovery-address objects that have been added using the iscsiadm add discovery-address subcommand. When used with the -v option, lists all known targets at a specified discovery-address. The -v option returns one or more target names along with zero or more target addresses and associated target portal group tags (TPGT), if applicable. isns-server [-v] [isns-server[, ...]] Lists the isns-server objects that have been added using the iscsiadm add isns-server subcommand. When used with the -v option, this subcommand lists all known targets at a specified isns-server address. The -v option returns one of more target names along with zero or more target addresses and associated target portal group tags, if applicable. modify Subcommand The syntax for the modify subcommand is: # iscsiadm modify direct_object [options] The modify subcommand supports the following direct_objects: discovery [options] Enabling a discovery method initiates a discovery using that method. Disabling a discovery method that is currently enabled does not affect connections to any targets that have already been discovered by that method. Options for modify discovery are as follows: -i, -iSNS enable | disable Enable or disable iSNS discovery. -s, --static enable | disable Enable or disable static discovery. -t, --sendtargets enable | disable Enable or disable SendTargets discovery. initiator-node [options] Modifies an initiator's properties. If a target is currently connected, this operation can succeed. However, the modified set of param- eters will not be in effect for that target until an existing connection session no longer exists and a new connection has been estab- lished. The options -C and --CHAP-secret require a CHAP secret entry in response to a prompt. For iSCSI booting when the Solaris I/O multipathing feature (formerly known as Sun StorEdge Traffic Manager [STMS] or MPxIO) is dis- abled, you can modify only the following initiator-node options: o -r, --radius-server o -R, --radius-access o -P, --radius-shared-secret For iSCSI booting when the Solaris I/O multipathing feature is enabled, you can modify only the following initiator-node options: o -h, --headerdigest o -d, --datadigest o -c, --configured-sessions Options for modify initiator-node are as follows: -A, --node-alias <initiator node alias> Modifies the initiator node alias. Maximum length of 223 characters. -a, --authentication chap | none Sets the authentication mode. -C, --CHAP-secret Sets the CHAP secret value. There is no default value. Maximum length is 16 characters; minimum required length is 12 characters. -c, --configured-sessions <num_sessions> | <IP address>[,<IP address>...] Sets the number of configured iSCSI sessions that will be created for each iSCSI target. The feature should be used in combination with the Solaris I/O multipathing feature described in scsi_vhci(7D). -d, --datadigest none | CRC32 Sets whether CRC32 is enabled to check SCSI data transfers. -H, --CHAP-name CHAP name Specifies a CHAP username. If you do not use this option, upon initialization, the CHAP name is set to the initiator node name. When the authentication method is set to CHAP (see -a/--authentication option, above), the CHAP username is displayed with the com- mand iscsiadm list initiator-node. -h, --headerdigest none | CRC32 Sets whether CRC32 is enabled to check SCSI packet headers. -N, --node-name <initiator node name> Modifies the initiator node name. Maximum of 223 characters. Note - During Solaris installation, the initiator node name is set to a globally unique value. Changing this value can adversely affect operation within the iSCSI network. -P, --radius-shared-secret (exclusive) Sets the RADIUS shared secret. -R, --radius-access enable | disable Sets whether a RADIUS server will be used. -r, --radius-server <IP address>[:<port>] Sets the IP address and port of the radius server to be used. target-param [options] target Modifies a target's parameters. If a target is currently connected, the modify operation will succeed, although the modified settings might not take effect for a few seconds. To confirm that these settings are active, use iscsiadm list target -v. If a specified target is not associated with any discovery method, a target object is created with the specified parameters. After using this command to mod- ify a target's parameters, the new parameters will persist until they are modified or removed with a iscsiadm remove target-param com- mand on that target. The options -C and --CHAP-secret require a CHAP secret entry in response to a prompt. Options for modify target-param are as follows: -B, --bi-directional-authentication enable | disable Sets the bidirectional option. If set to enable, the initiator performs bidirectional authentication for the specified target. -C, --CHAP-secret Sets the target's CHAP secret value. There is no default value. Maximum acceptable length is 16 characters. -c, --configured-sessions <num_sessions> | <IP address>[,<IP address>...] Sets the number of configured iSCSI sessions that will be created for each iSCSI target. The feature should be used in combination with the Solaris I/O multipathing feature described in scsi_vhci(7D). -d, --datadigest none | CRC32 Sets whether CRC32 is enabled or disabled for the data. -H, --CHAP-name CHAP name Sets a CHAP username. If you do not use this option, upon initialization, the CHAP name is set to the target name. When the authen- tication method is set to CHAP (see -a/--authentication option, under the initiator-node direct object, above), the CHAP username is displayed with the command iscsiadm list initiator-node. -h, --headerdigest none | CRC32 Sets whether CRC32 is enabled or disabled for the header. -p, --login-param Specify one or more login parameter settings. Note - These values should only be modified by an administrator with a good working knowledge of the parameter's impact within the iSCSI network. The login parameters are derived from iSCSI proposed standard RFC 3720. Valid values are: dataseqinorder yes or no defaulttime2retain 0-3600 defaulttime2wait 0-3600 firstburstlength 512 to 2^24-1 immediatedata yes or no initialr2t yes or no maxburstlength 512 to 2^24-1 datapduinorder yes or no maxoutstandingr2t 1 to 65535 maxrecvdataseglen 512 to 2^24-1 remove Subcommand The syntax for the remove subcommand is: # iscsiadm remove direct_object The remove subcommand supports the following direct_objects: discovery-address discovery-address, ... Removes a target device from the list of discovery addresses. A discovery address (as in the syntax shown below) is an IP address-port combination used in a SendTargets discovery session. Using this discovery approach, a target device can inform an initiator of the tar- get address and target name of each target exposed by that device. If any target exposed by the discovery address is currently mounted or there is active I/O on the device, an error of "logical unit in use" is returned and the operation fails. If the associated devices are not in use, they are removed. discovery-address must be formatted as: <IP address>[:<port>] There are no options associated with this direct object. isns-server isns-server, ... Removes an iSNS server from the list of iSNS server addresses. An iSNS server address (specified in the syntax shown below) is an IP address-port combination used in an iSNS discovery session. By using iSNS discovery, an iSNS server can provide an initiator with information about a portal and the name of each target that belongs to the same discovery domain as that of the initiator. If any tar- get discovered by means of iSNS is currently mounted or there is active I/O on the device, an error of "logical unit in use" is returned and the operation fails. If the associated devices are not in use, they are removed. isns-server must be formatted as: IP_address[:port] There are no options associated with this direct object. static-config static_target, ... Removes a target from the list of statically discovered targets. If the target being removed is currently mounted or there is active I/O on the device, an error of "logical unit in use" is returned and the operation fails. If a device is not in use, it will be removed. static_target must be formatted as: <target-name>,<target-address>[:port-number][,tpgt] There are no options associated with this direct object. target-param target-name Removes target specified by target-name. The target name is formatted as: <target-name> There are no options associated with this direct object. For iSCSI booting when the Solaris I/O multipathing feature (formerly known as Sun StorEdge Traffic Manager [STMS] or MPxIO) is enabled, you cannot remove the target. Proper Use of Discovery Methods Do not configure a target to be discovered by both static and dynamic discovery methods. The consequence of using redundant discovery meth- ods might be slow performance when communicating with the iSCSI target device.
OPTIONS
The following generic options are supported: -V, --version Displays version information. Stops interpretation of subsequent arguments. -?, --help Displays help information. Can be used following an iscsiadm command with no arguments, following a subcommand, or follow- ing a subcommand-direct object combination. Responds with help information appropriate for your entry. For example, if you enter: # iscsiadm modify initiator-node --help ...iscsiadm responds with a display of the options available for that combination of subcommand and direct object.
EXAMPLES
Example 1 Adding a Discovery Address The following command uses the add subcommand to add a discovery address. # iscsiadm add discovery-address 10.0.0.1:3260 10.0.0.2:3260 Example 2 Adding a Static Target The following command uses the add subcommand to add a static target. # iscsiadm add static-config \ iqn.1999-08.com.array:sn.01234567,10.0.0.1:3260 Example 3 Listing Current Discovery Settings The following command uses the list subcommand to list current discovery settings. # iscsiadm list discovery Discovery: Static: enabled Send Targets: disabled iSNS: enabled Example 4 Obtaining Verbose Discovery Output The following commands uses the -v option (one with, one without) with the list subcommand to obtain verbose output. # iscsiadm list discovery-address Discovery Address: 10.0.0.1:3260 Discovery Address: 10.0.0.2:3260 # iscsiadm list discovery-address -v 10.0.0.1:3260 Discovery Address: 10.0.0.1:3260 Target name: eui.210000203787d1f7 Target address: 10.0.0.1:3260 Target name: eui.210000203787a693 Target address: 10.0.0.1:3260 Example 5 Displaying Information on the Initiator The following command uses the list subcommand to display information on the initiator. # iscsiadm list initiator-node Initiator node name: iqn.1986-03.com.company.central.interopv20-1 Initiator node alias: interopv20-1 Login Parameters (Default/Configured): Header Digest: NONE/NONE Data Digest: NONE/NONE Authentication Type: CHAP CHAP Name: iqn.1986-03.com.company.central.interopv20-1 RADIUS Server: NONE RADIUS access: disabled Configured Sessions: 1 Example 6 Displaying Static Configuration Information The following command uses the list subcommand to display information about static configurations. # iscsiadm list static-config Static target: eui.210000203787a693,10.0.0.1:3260 Example 7 Displaying Target Information The following commands show the use of the list subcommand with various options to display information about targets. # iscsiadm list target Target: iqn.2004-05.com.abcStorage:Tgt-1 Alias: - TPGT: 12288 ISID: 4000002a0000 Connections: 1 # iscsiadm list target -v iqn.2004-05.com.abcStorage:Tgt-1 Target: iqn.2004-05.com.abcStorage:Tgt-1 Alias: - TPGT: 12288 ISID: 4000002a0000 Connections: 1 CID: 0 IP address (Local): 10.4.52.158:32803 IP address (Peer): 10.4.49.70:3260 Discovery Method: SendTargets Login Parameters (Negotiated): Data Sequence In Order: yes Data PDU In Order: yes Default Time To Retain: 20 Default Time To Wait: 2 Error Recovery Level: 0 First Burst Length: 65536 Immediate Data: yes Initial Ready To Transfer (R2T): yes Max Burst Length: 262144 Max Outstanding R2T: 1 Max Receive Data Segment Length: 65536 Max Connections: 1 Header Digest: NONE Data Digest: NONE # iscsiadm list target -S iqn.2004-05.com.abcStorage:Tgt-1 Target: iqn.2004-05.com.abcStorage:Tgt-1 Alias: - TPGT: 12288 ISID: 4000002a0000 Connections: 1 LUN: 6 Vendor: ABCStorage Product: iSCSI Target OS Device Name: /dev/rdsk/c3t1d0s2 LUN: 5 Vendor: ABCStorage Product: iSCSI Target OS Device Name: /dev/rdsk/c3t0d0s2 Example 8 Displaying Target Parameter Information The following command uses the list subcommand to display target information for a specific target. # iscsiadm list target-param -v iqn.2004-05.com.abcStorage:Tgt-1 Target: iqn.2004-05.com.abcStorage:Tgt-1 Alias: - Bi-directional Authentication: disabled Authentication Type: NONE Login Parameters (Default/Configured): Data Sequence In Order: yes/- Data PDU In Order: yes/- Default Time To Retain: 20/- Default Time To Wait: 2/- Error Recovery Level: 0/- First Burst Length: 65536/- Immediate Data: yes/- Initial Ready To Transfer (R2T): yes/- Max Burst Length: 262144/- Max Outstanding R2T: 1/- Max Receive Data Segment Length: 65536/- Max Connections: 1/- Header Digest: NONE/- Data Digest: NONE/- Connections: 1 Example 9 Enabling Static Discovery Method The following command uses the modify subcommand to enable the static discovery method. # iscsiadm modify discovery --static enable Example 10 Setting the IP Address for the Radius Server The following command uses the modify subcommand to set the IP address for the radius server, which will be used for CHAP authentication. # iscsiadm modify initiator --radius-server 10.0.0.1 Example 11 Setting the Node Name for Initiator The following command uses the modify subcommand to set the node name for the initiator node. # iscsiadm modify initiator-node -N iqn.2004-10.com.SUN.host-1 Example 12 Changing Target Parameters The following command uses the modify subcommand to change the target parameters for a specified target. # iscsiadm modify target-param -d none -h none eui.210000203787a693 Example 13 Removing a Discovery Address The following command uses the remove subcommand to remove a discovery address. # iscsiadm remove discovery-address 10.0.0.1:3260 Example 14 Removing Target Parameters The following command uses the remove subcommand to remove a set of target parameters. # iscsiadm remove target-param eui.210000203787a693
ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWiscsiu | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+
SEE ALSO
attributes(5), scsi_vhci(7D) SunOS 5.11 17 Dec 2008 iscsiadm(1M)