.TH ISCSIADM 8 "Nov 2020" "" "Linux Administrator's Manual"
.SH NAME
iscsiadm \- open-iscsi administration utility
.SH SYNOPSIS
.B iscsiadm
.B \-m discoverydb
.RB [ \-hV ]
.RB [ \-d
.IR debug_level ]
.RB [ \-P
.IR printlevel ]
.RB [ \-I
.I iface
.BI \-t\  type\  \-p\  ip:port
.RB [ \-lD ]
] | [
.RB [ \-p
.I ip:port
.B \-t
.IR type ]
.RB [ \-o
.IR operation ]
.RB [ \-n
.IR name ]
.RB [ \-v
.IR value ]
.RB [ \-lD ]
]
.PP
.B iscsiadm
.B \-m discovery
.RB [ \-hV ]
.RB [ \-d
.IR debug_level ]
.RB [ \-P
.IR printlevel ]
.RB [ \-I
.IB iface\  \-t\  type\  \-p\  ip:port
.RB [ \-l ]
] | [
.RB [ \-p
.IR ip:port ]
.RB [ \-l | \-D ]
]
.PP
.B iscsiadm
.B \-m node
.RB [ \-hV ]
.RB [ \-d
.IR debug_level ]
.RB [ \-P
.IR printlevel ]
.RB [ \-L
.IR all,manual,automatic,onboot ]
.RB [ \-W ]
.RB [ \-U
.IR all,manual,automatic,onboot ]
.RB [ \-S ]
[
.RB [ \-T
.IB targetname\  \-p\  ip:port\  \-I
.IR iface ]
.RB [ \-l | \-u | \-R | \-s ]
]
[
.RB [ \-o
.IR operation ]
.RB [ \-n
.IR name ]
.RB [ \-v
.IR value ]
.RB [ \-p
.IR ip:port ]
]
.PP
.B iscsiadm
.B \-m session
.RB [ \-hV ]
.RB [ \-d
.IR debug_level ]
.RB [ \-P
.IR printlevel ]
.RB [ \-r
.IR sessionid | sysfsdir
.RB [ \-R ]
.RB [ \-u | \-s | \-o
.IR new ]
]
.PP
.B iscsiadm
.B \-m iface
.RB [ \-hV ]
.RB [ \-d
.IR debug_level ]
.RB [ \-P
.IR printlevel ]
.RB [ \-I
.IR ifacename\  |
.B \-H
.IR hostno|MAC ]
[
.RB [ \-o
.IR operation ]
.RB [ \-n
.IR name ]
.RB [ \-v
.IR value ]
]
[
.BI \-C\  ping
.RB [ \-a
.IR ip ]
.RB [ \-b
.IR packetsize ]
.RB [ \-c
.IR count ]
.RB [ \-i
.IR interval ]
]
.PP
.B iscsiadm
.B \-m fw
.RB [ \-d
.IR debug_level ]
.RB [ \-l ]
.PP
.B iscsiadm
.B \-m host
.RB [ \-P
.IR printlevel ]
.RB [ \-H
.IR hostno|MAC ]
[
.RB [ \-C
.I chap
.RB [ \-x
.IR chap_tbl_idx ]
] |
.RB [ \-C
.I flashnode
.RB [ \-A
.IR portal_type ]
.RB [ \-x
.IR flashnode_idx ]
] |
.RB [ \-C
.IR stats ]
]
[
.RB [ \-o
.IR operation ]
.RB [ \-n
.IR name ]
.RB [ \-v
.IR value ]
]
.PP
.B iscsiadm
.B \-k  priority
.SH DESCRIPTION
The iscsiadm utility is a command-line tool allowing discovery and login
to iSCSI targets, as well as access and management of the open-iscsi
database.
.PP
Open-iscsi does not use the term node as defined by the iSCSI RFC,
where a node is a single iSCSI initiator or target. Open-iscsi uses the
term node to refer to a portal on a target.
.PP
For session mode, a session id (sid) is used. The sid of a session can be
found by running iscsiadm \-m session \-P 1. The session id and sysfs
path are not currently persistent and is partially determined by when the
session is setup.
.PP
Note that many of the node and discovery operations require that the iSCSI
daemon (iscsid) be running.
.SH OPTIONS
.TP
\fB\-a\fR, \fB\-\-ip=\fIipaddr\fP
\fIipaddr\fR can be IPv4 or IPv6.
.IP
This option is only valid for ping submode.
.TP
\fB\-A\fR, \fB\-\-portal_type=\fI[ipv4|ipv6]\fR
Specify the portal type for the new flash node entry to be created.
.IP
This option is only valid for flashnode submode of host mode and only with \fInew\fR operation.
.TP
\fB\-b\fR, \fB\-\-packetsize=\fIpacketsize\fP
Specify the ping \fIpacketsize\fR.
.IP
This option is only valid for ping submode.
.TP
\fB\-c\fR, \fB\-\-count=\fIcount\fP
\fIcount\fR specify number of ping iterations.
.IP
This option is only valid for ping submode.
.TP
\fB\-C\fR, \fB\-\-submode=\fIop\fP
Specify the submode for mode. op must be name of submode.
.IP
Currently iscsiadm support ping as submode for iface. For example:
.IP
iscsiadm \-m iface \-I ifacename \-C ping \-a ipaddr \-b packetsize \-c count \-i interval
.IP
For host, it supports chap , flashnode and stats as submodes. For example:
.IP
iscsiadm \-m host \-H hostno \-C chap \-x chap_tbl_idx \-o operation
.IP
iscsiadm \-m host \-H hostno \-C flashnode \-x flashnode_idx \-o operation
.IP
iscsiadm \-m host \-H hostno \-C stats
.TP
\fB\-d\fR, \fB\-\-debug=\fIdebug_level\fP
print debugging information. Valid values for debug_level are 0 to 8.
.TP
\fB\-h\fR, \fB\-\-help\fR
display help text and exit
.TP
\fB\-H\fR, \fB\-\-host=\fI[hostno|MAC]\fR
The host argument specifies the SCSI host to use for the operation. It can be
the scsi host number assigned to the host by the kernel's scsi layer, or the
MAC address of a scsi host.
.TP
\fB\-i\fR, \fB\-\-interval=\fIinterval\fP
\fIinterval\fP specify delay between two ping iterations.
.IP
This option is only valid for ping submode.
.TP
\fB\-I\fR, \fB\-\-interface=\fI[iface]\fR
The interface argument specifies the iSCSI interface to use for the operation.
iSCSI interfaces (iface) are defined in /etc/iscsi/ifaces. For hardware
iSCSI (qla4xxx) the iface config must have the hardware address
(iface.hwaddress = port's MAC address)
and the driver/transport_name (iface.transport_name). The iface's name is
then the filename of the iface config. For software iSCSI, the iface config
must have either the hardware address (iface.hwaddress), or the network
layer's interface name (iface.net_ifacename), and it must have the
driver/transport_name
.IP
The available drivers/iscsi_transports are tcp (software iSCSI over TCP/IP),
\fIiser\fR (software iSCSI over InfiniBand),
\fIqla4xxx\fR (Qlogic 4XXXX and 82XXX HBAs),
\fIcxgb3i\fR and \fIcxgb4i\fR (Chelsio T3 and T4 adapters),
\fIbnx2i\fR (QLogic Netextreme II adapters),
\fIbe2iscsi\fR (Emulex 10G adapter),
\fIqedi\fR (QLogic QEDI 25/40/100Gb adapter), and
\fIocs\fR (Emulex One Connect storage).
Some of these are considered experimental, as they are not fully tested.
.IP
The hwaddress is the MAC address or for software iSCSI it may be the special
value \fIdefault\fR which directs the initiator to not bind the session to a
specific hardware resource and instead allow the network or InfiniBand layer
to decide what to do. There is no need to create an iface config with the default
behavior. If you do not specify an iface, then the default behavior is used.
.IP
As mentioned above there is a special iface name \fIdefault\fR. There are
others which do not bind the session to a specific card, but instead bind
the session to the transport:
\fIiser\fR,
\fIcxgb3i\fR,
\fIcxgb4i\fR, and
\fIbnx2i\fR.
.IP
In discovery mode multiple interfaces can be specified by passing in multiple
\-I/\-\-interface instances. For example:
.IP
\fBsh#\fR iscsiadm \-m discoverydb \-t st \-p ip:port \-I iface0 \-I iface2 \-\-discover
.IP
Will direct iscsiadm to setup the node db to create records which will create
sessions through the two intefaces passed in.
.IP
In node mode, only a single interface is supported in each call to iscsiadm.
.IP
This option is valid for discovery, node and iface mode.
.TP
\fB\-k\fR, \fB\-\-killiscsid=\fI[priority]\fR
Currently priority must be zero. This will immediately stop all iscsid
operations and shutdown iscsid. It does not logout any sessions. Running
this command is the same as doing \fIkillall iscsid\fR. Neither should
normally be used, because if iscsid is doing error recovery or if there
is an error while iscsid is not running, the system may not be able to recover.
This command and iscsid's SIGTERM handling are experimental.
.TP
\fB\-D\fR, \fB\-\-discover\fR
Discover targets using the discovery record with the  \fIrecid\fR matching
the the discovery type and portal passed in. If there is no matching record,
it will be created using the iscsid.conf discovery settings.
This must be passed in \fIdiscoverydb\fR mode to instruct iscsiadm to perform
discovery.
.IP
This option is only valid for SendTargets discovery mode.
.TP
\fB\-l\fR, \fB\-\-login\fR
For node and fw mode, login to a specified record. For discovery mode, login to
all discovered targets.
.IP
This option is only valid for discovery and node modes.
.TP
\fB\-L\fR, \fB\-\-loginall=\fI[all|manual|automatic|onboot]\fR
For node mode, login all sessions with the node or conn startup values passed
in or all running session, except ones marked onboot, if all is passed in.
.IP
This option is only valid for node mode (it is valid but not functional
for session mode).
.TP
\fB\-W\fR, \fB\-\-\-no_wait\fR
In node mode, do not wait for a response from the targets.
This means that success will be returned if the command is able to
send the login requests, whether or not they succeed. In this case, it will
be up to the caller to poll for success (i.e. session creation).
.TP
\fB\-m\fR, \fB\-\-mode \fIop\fR
specify the mode. \fIop\fR
must be one of \fIdiscovery\fR, \fIdiscoverydb\fR, \fInode\fR, \fIfw\fR,
\fIhost\fR \fIiface\fR or \fIsession\fR.
.IP
If no other options are specified: for \fIdiscovery\fR, \fIdiscoverydb\fR and
\fInode\fR, all of their respective records are displayed; for \fIsession\fR,
all active sessions and connections are displayed; for \fIfw\fR, all boot
firmware values are displayed; for \fIhost\fR, all iSCSI hosts are displayed;
and for \fIiface\fR, all ifaces setup in /etc/iscsi/ifaces are displayed.
.TP
\fB\-n\fR, \fB\-\-name=\fIname\fR
In node mode, specify a field \fIname\fR in a record. In flashnode submode
of host mode, specify name of the flash node parameter.
.IP
For use with the \fIupdate\fR operator.
.TP
\fB\-o\fR, \fB\-\-op=\fIop\fR
Specifies a database operator \fIop\fR. \fIop\fR must be one of
\fInew\fR, \fIdelete\fR, \fIupdate\fR, \fIshow\fR or \fInonpersistent\fR.
.IP
For iface mode, \fIapply\fR and \fIapplyall\fR  are also applicable.
.IP
For flashnode submode of host mode, \fIlogin\fR and \fIlogout\fR are also applicable.
.IP
This option is valid for all modes except fw. Delete should not be used
on a running session. If it is iscsiadm will stop the session and then delete the
record.
.IP
\fInew\fR creates a new database record for a given object. In node mode, the
\fIrecid\fR is the target name and portal (IP:port). In iface mode, the \fIrecid\fR
is the iface name. In discovery mode, the \fIrecid\fR is the portal and
discovery type.
.IP
In session mode, the \fInew\fR operation logs in a new session using
the same node database and iface information as the specified session.
.IP
In discovery mode, if the \fIrecid\fR and new operation is passed in,
but the \fI--discover\fR argument is not, then iscsiadm will only create a
discovery record (it will not perform discovery). If the \fI--discover\fR
argument is passed in with the portal and discovery type, then iscsiadm
will create the discovery record if needed, and it will create records
for portals returned by the target that do not yet have a node DB record.
.IP
\fIdelete\fR deletes a specified \fIrecid\fR. In discovery mode, if
iscsiadm is performing discovery it will delete records for portals that
are no longer returned.
.IP
\fIupdate\fR will update the \fIrecid\fR with \fIname\fR to the specified
\fIvalue\fR. In discovery mode, if iscsiadm is performing discovery the
\fIrecid\fR, \fIname\fR  and \fIvalue\fR arguments are not needed. The
update operation will operate on the portals returned by the target,
and will update the node records with info from the config file and
command line.
.IP
\fIshow\fR is the default behaviour for node, discovery and iface mode. It is
also used when there are no commands passed into session mode and a running
sid is passed in.
\fIname\fR and \fIvalue\fR are currently ignored when used with \fIshow\fR.
.IP
\fInonpersistent\fR instructs iscsiadm to not manipulate the node DB.
.IP
\fIapply\fR will cause the network settings to take effect on the specified iface.
.IP
\fIapplyall\fR will cause the network settings to take effect on all the
ifaces whose MAC address or host number matches that of the specific host.
.IP
\fIlogin\fR will log into the specified flash node entry.
.IP
\fIlogout\fR does the logout from the given flash node entry.
.TP
\fB\-p\fR, \fB\-\-portal=\fIip[:port]\fR
Use target portal with ip-address \fIip\fR and \fIport\fR. If port is not passed
in the default \fIport\fR value is 3260.
.IP
IPv6 addresses can be specified as [ddd.ddd.ddd.ddd]:port or
ddd.ddd.ddd.ddd.
.IP
Hostnames can also be used for the ip argument.
.IP
This option is only valid for discovery, or for node operations with
the \fInew\fR operator.
.IP
This should be used along with \-\-target in node mode, to specify what
the open-iscsi docs refer to as a node or node record. Note: open-iscsi's
use of the word node, does not match the iSCSI RFC's iSCSI Node term.
.TP
\fB\-P\fR,  \fB\-\-print=\fIprintlevel\fR
If in node mode print nodes in tree format. If in session mode print
sessions in tree format. If in discovery mode print the nodes in
tree format.
.TP
\fB\-T\fR, \fB\-\-targetname=\fItargetname\fR
Use target \fItargetname\fR.
.IP
This should be used along with \-\-portal in node mode, to specify what
the open-iscsi docs refer to as a node or node record. Note: open-iscsi's
use of the word node, does not match the iSCSI RFC's iSCSI Node term.
.TP
\fB\-r\fR,  \fB\-\-sid=\fIsid | sysfsdir\fR
Use session ID \fIsid\fR. The sid of a session can be found from running
iscsiadm in session mode with the \-\-info argument.
.IP
Instead of sid, a sysfs path containing the session can be used.
For example using one of the following:
/sys/devices/platform/hostH/sessionS/targetH:B:I/H:B:I:L,
/sys/devices/platform/hostH/sessionS/targetH:B:I, or
/sys/devices/platform/hostH/sessionS, for the sysfsdir argument would
result in the session with sid S to be used.
.IP
\fIsid | sysfsdir\fR is only required for session mode.
.TP
\fB\-R\fR,  \fB\-\-rescan\fR
In session mode, if sid is also passed in rescan the session. If no sid has
been passed in  rescan all running sessions.
.IP
In node mode, rescan a session running through the target, portal, iface
tuple passed in.
.TP
\fB\-s\fR, \fB\-\-stats\fR
Display session statistics.
This option when used with host mode, displays host statistics.
.TP
\fB\-S\fR, \fB\-\-show\fR
When displaying records, do not hide masked values, such as the CHAP
secret (password).
.IP
This option is only valid for node and session mode.
.TP
\fB\-t\fR, \fB\-\-type=\fItype\fR
\fItype\fR must be \fIsendtargets\fR (or abbreviated as \fIst\fR),
\fIslp\fR, \fIisns\fR or \fIfw\fR. Currently only sendtargets, fw, and
iSNS is supported, see the DISCOVERY TYPES section.
.IP
This option is only valid for discovery mode.
.TP
\fB\-u\fR, \fB\-\-logout\fR
logout for a specified record.
.IP
This option is only valid for node and session mode.
.TP
\fB\-U\fR, \fB\-\-logoutall=\fI[all,manual,automatic|onboot]\fR
logout all sessions with the node or conn startup values passed in or all
running session, except ones marked onboot, if all is passed in.
.IP
This option is only valid for node mode (it is valid but not functional
for session mode).
.TP
\fB\-v\fR, \fB\-\-value=\fIvalue\fR
Specify a \fIvalue\fR for use with the \fIupdate\fR operator.
.IP
This option is only valid for node mode and flashnode submode of host mode.
.TP
\fB\-V\fR, \fB\-\-version\fR
display version and exit
.TP
\fB\-x\fR, \fB\-\-index=\fIindex\fR
Specify the \fIindex\fR of the entity to operate on.
.IP
This option is only valid for chap and flashnode submodes of host mode.
.SH DISCOVERY TYPES
iSCSI defines 3 discovery types: SendTargets, SLP, and iSNS.
.TP
.B
SendTargets
A native iSCSI protocol which allows each iSCSI
target to send a list of available targets to the initiator.
.TP
.B
SLP
Optionally an iSCSI target can use the Service Location Protocol (SLP)
to announce the available targets. The initiator can either implement
SLP queries directly or can use a separate tool to acquire the
information about available targets.
.TP
.B
iSNS
iSNS (Internet Storage Name Service) records information about storage
volumes within a larger network. To utilize iSNS, pass the address and
optionally the port of the iSNS server to do discovery to.
.TP
.B
fw
Several NICs and systems contain a mini iSCSI initiator which can be used
for boot. To get the values used for boot the fw option can be used.
Doing fw discovery, does not store persistent records in the node or
discovery DB, because the values are stored in the system's or NIC's
resource.
.IP
Performing fw discovery will print the portals, like with other discovery
methods. To see other settings like CHAP values and initiator settings,
like you would in node mode, run \fIiscsiadm \-m fw\fR.
.IP
fw support in open-iscsi is experimental. The settings and iscsiadm
syntax and output format may change.
.P
iscsiadm supports the
.B
iSNS (isns)
or
.B
SendTargets (st)
discovery type. An SLP implementation is under development.
.SH EXIT STATUS
On success 0 is returned. On error one of the return codes below will
be returned.
.PP
Commands that operate on multiple objects (sessions, records, etc),
iscsiadm/iscsistart will return the first error that is encountered.
iscsiadm/iscsistart will attempt to execute the operation on the objects it
can. If no objects are found ISCSI_ERR_NO_OBJS_FOUND is returned.
.TP
.B
0
ISCSI_SUCCESS - command executed successfully.
.TP
.B
1
ISCSI_ERR - generic error code.
.TP
.B
2
ISCSI_ERR_SESS_NOT_FOUND - session could not be found.
.TP
.B
3
ISCSI_ERR_NOMEM - could not allocate resource for operation.
.TP
.B
4
ISCSI_ERR_TRANS - connect problem caused operation to fail.
.TP
.B
5
ISCSI_ERR_LOGIN - generic iSCSI login failure.
.TP
.B
6
ISCSI_ERR_IDBM - error accessing/managing iSCSI DB.
.TP
.B
7
ISCSI_ERR_INVAL - invalid argument.
.TP
.B
8
ISCSI_ERR_TRANS_TIMEOUT - connection timer exired while trying to connect.
.TP
.B
9
ISCSI_ERR_INTERNAL - generic internal iscsid/kernel failure.
.TP
.B
10
ISCSI_ERR_LOGOUT - iSCSI logout failed.
.TP
.B
11
ISCSI_ERR_PDU_TIMEOUT - iSCSI PDU timedout.
.TP
.B
12
ISCSI_ERR_TRANS_NOT_FOUND - iSCSI transport module not loaded in kernel or iscsid.
.TP
.B
13
ISCSI_ERR_ACCESS - did not have proper OS permissions to access iscsid or execute iscsiadm command.
.TP
.B
14
ISCSI_ERR_TRANS_CAPS - transport module did not support operation.
.TP
.B
15
ISCSI_ERR_SESS_EXISTS - session is logged in.
.TP
.B
16
ISCSI_ERR_INVALID_MGMT_REQ - invalid IPC MGMT request.
.TP
.B
17
ISCSI_ERR_ISNS_UNAVAILABLE - iSNS service is not supported.
.TP
.B
18
ISCSI_ERR_ISCSID_COMM_ERR - a read/write to iscsid failed.
.TP
.B
19
ISCSI_ERR_FATAL_LOGIN - fatal iSCSI login error.
.TP
.B
20
ISCSI_ERR_ISCSID_NOTCONN - could not connect to iscsid.
.TP
.B
21
ISCSI_ERR_NO_OBJS_FOUND - no records/targets/sessions/portals found to execute operation on.
.TP
.B
22
ISCSI_ERR_SYSFS_LOOKUP - could not lookup object in sysfs.
.TP
.B
23
ISCSI_ERR_HOST_NOT_FOUND - could not lookup host.
.TP
.B
24
ISCSI_ERR_LOGIN_AUTH_FAILED - login failed due to authorization failure.
.TP
.B
25
ISCSI_ERR_ISNS_QUERY - iSNS query failure.
.TP
.B
26
ISCSI_ERR_ISNS_REG_FAILED - iSNS registration/deregistration failed.
.TP
.B
27
ISCSI_ERR_OP_NOT_SUPP - operation not support
.TP
.B
28
ISCSI_ERR_BUSY - device or resource in use
.TP
.B
29
ISCSI_ERR_AGAIN - operation failed, but retrying later may succeed
.TP
.B
30
ISCSI_ERR_UNKNOWN_DISCOVERY_TYPE - unknown discovery type
.TP
.B
31
ISCSI_ERR_CHILD_TERMINATED - child process terminated
.TP
.B
32
ISCSI_ERR_SESSION_NOT_CONNECTED - session likely not connected
.SH EXAMPLES
Discover targets at a given IP address:
.IP
\fBsh#\fR iscsiadm \-\-mode discoverydb \-\-type sendtargets \-\-portal 192.168.1.10 \-\-discover
.PP
Login, must use a node record id found by the discovery:
.IP
\fBsh#\fR iscsiadm \-\-mode node \-\-targetname iqn.2001-05.com.doe:test \-\-portal 192.168.1.1:3260 \-\-login
.PP
Logout:
.IP
\fBsh#\fR iscsiadm \-\-mode node \-\-targetname iqn.2001-05.com.doe:test \-\-portal 192.168.1.1:3260 \-\-logout
.PP
List node records:
.IP
\fBsh#\fR iscsiadm \-\-mode node
.PP
Display all data for a given node record:
.IP
\fBsh#\fR iscsiadm \-\-mode node \-\-targetname iqn.2001-05.com.doe:test \-\-portal 192.168.1.1:3260
.SH FILES
.TP
/etc/iscsi/iscsid.conf
The configuration file read by \fBiscsid\fR and \fBiscsiadm\fR on startup.
.TP
/etc/iscsi/initiatorname.iscsi
The file containing the iSCSI InitiatorName and InitiatorAlias read by
\fBiscsid\fR and \fBiscsiadm\fR on startup.
.TP
/etc/iscsi/nodes/
This directory contains the nodes with their targets.
.TP
/etc/iscsi/send_targets
This directory contains the portals.
.SH "SEE ALSO"
.BR iscsid (8)
.SH AUTHORS
Open-iSCSI project <http://www.open-iscsi.com/>
.br
Alex Aizman <itn780@yahoo.com>
.br
Dmitry Yusupov <dmitry_yus@yahoo.com>