CFGADM_SATA(8) Maintenance Procedures CFGADM_SATA(8)

NAME

cfgadm_sata - SATA hardware-specific commands for cfgadm

SYNOPSIS

/usr/sbin/cfgadm [-f] [-y | -n] [-v] [-o hardware_options]
-c function ap_id...


/usr/sbin/cfgadm [-f] [-y | -n] [-v] [-o hardware_options]
-x hardware_function ap_id...


/usr/sbin/cfgadm [-v] [-a] [-s listing_options]
[-o hardware_options] [-l [ap_id | ap_type]...]


/usr/sbin/cfgadm [-v] [-o harware_options] -t ap_id...


/usr/sbin/cfgadm [-v] [-o hardware_options] -h [ap_id]...

DESCRIPTION

The SATA hardware specific library, /usr/lib/cfgadm/sata.so.1, provides
the functionality for SATA hot plugging through the cfgadm command.
cfgadm operates on attachment points, which are locations in the system
where hardware resources can be dynamically reconfigured. See cfgadm(8)
for information regarding attachment points.


Each SATA controller's and port multiplier's device port is represented
by an attachment point in the device tree. SATA devices, connected and
configured in the system are shown as the attachment point name
extension. The terms "attachment point" and "SATA port" are used
interchangeably in the following description.


Attachment points are named through ap_ids. All the SATA attachment
points ap_id consist of a string in the following form:

sataX/P[.M][::dsk/cXtYd0]


where

X
is the SATA controller number


P
is the SATA controller's device port number (0 to 31)


M
is the port multiplier's device port number (0 to 14) the
port multiplier host port number (15). It is used only when
the port multiplier is attached to the SATA controller's
device port.


dev/cXtYd0
identifies the attached SATA device


Y
is a target number


In general, the device identifier is derived from the corresponding
logical link for the device in /dev. Because only one LUN (LUN 0) is
supported by the SATA device, the "d" component of the device string will
always have number 0 (zero).


For example, the logical ap_id of the device port 4 of the port
multiplier connected to the device port 5 of the SATA controller 2 would
be:

sata2/5.4


If the SATA disk or CD/DVD device is connected to this attachment point,
and the device is configured, the ap_id would be:

sata2/5.4::dsk/c2t645d0


The cXtYd0 string identifying a device has one-to-one correspondence to
the device attachment point.


A simple listing of attachment points in the system will include all SATA
device ports and attached devices. For example:

#cfgadm -l
Ap_Id Type Receptacle Occupant Condition
sata0/0::dev/c0t0d0 disk connected configured ok
sata0/1::dev/c0t1d0 disk connected configured ok
sata0/2::dev/c0t2d0 cd-dvd connected configured ok
sata0/3 sata-port empty unconfigured ok
sata1/0 sata-port disconnected unconfigured unknown
sata1/1 sata port disconnected unconfigured unknown
sata1/2 sata port empty unconfigured ok
sata1/3.15 sata-pmult connected configured ok
sata1/3.0::dev/c0t512d0 disk connected configured ok
sata1/3.1 sata-port empty unconfigured ok
sata1/3.2 sata-port empty unconfigured ok
sata1/3.3 sata-port empty unconfigured ok
usb0/1 unknown empty unconfigured ok
usb0/2 unknown empty unconfigured ok


See cfgadm(8)for more information regarding listing of attachment points.


The receptacle state for attachment point at the SATA port have the
following meanings:

empty
The SATA port is powered-on and enabled. No device
presence was detected on this port.


disconnected
The SATA port is not enabled or the SATA device presence
was detected but no communication with the device was
established, or the port has failed.


connected
The SATA device is detected on the port the communication
with the device is established.


The occupant (device attached to the SATA port) state have the following
meanings:

configured
The attached SATA device is configured and ready to use
by the operating system.


unconfigured
No device is attached, or the SATA device attached to the
SATA port was not yet configured. To configure it, run
the command "cfgadm -c configure ap_id".


The attachment point (SATA port) condition have the following meanings:

ok
The SATA port is powered-on and enabled, and is ready for use.


failed
The SATA port failed. It may be disabled and/or powered-off by
the system. It is unusable and its condition is unknown. It
may be due to the device plugged-in.


unknown
The SATA port is disabled and its condition is unknown.


A "state table" is the combination of an attachment point receptacle
state, an occupant state, and an attachment point (SATA port) condition.
The valid states are:

empty/unconfigured/ok

The SATA port is enabled and active. No device presence was detected.


disconnected/unconfigured/ok

The SATA port is enabled and a device presence was detected but no
communications with the device was established.


disconnected/unconfigured/unknown

The SATA Port is disabled and its condition is unknown.


disconnected/unconfigured/failed

The SATA Port is disabled and unusable. The port was disabled by the
system due to a system-detected failure.


connected/unconfigured/ok

The SATA Port is enabled and active. A device presence was detected
and the communication with a device was established. The device is
not configured to be used by the OS.


connected/configured/ok

The device is present and configured, and is ready to use by the OS.

OPTIONS

cfgadm defines several types of operations besides listing (-l). These
operations include testing, (-t), invoking configuration state changes,
(-c), invoking hardware specific functions (-x), and obtaining
configuration administration help messages (-h).

-c function

The following generic functions are defined for the SATA hardware
specific library. For SATA port attachment point, the following
configuration state change operations are supported:

connect

Enable (activate) the SATA port and establish the communication
with an attached device. This operation implies powering-on the
port if necessary.


disconnect

Unconfigure the attached device, if it is not already
unconfigured, and disable (deactivate) the SATA port. A
subsequent "connect" command enables SATA port operation but does
not bring a device to the "configured" state.

For a SATA device attached to the SATA port following state change
operations are supported:

configure
Configure new device for use by the operating system
if it is not already configured. This command also
implies connect operation, if necessary.


unconfigure
Unconfigure the device connected to the SATA port if
it is not already unconfigured.

The configure and unconfigure operations cannot be used for an
attachment point where the port multiplier is connected. Port
multipliers are configured and unconfigured automatically by the
system. However, configure and unconfigure operations apply to all
SATA devices connected to the port multiplier's device ports.


-f

Not supported.


-h ap_id

SATA specific help can be obtained by using the help option with any
SATA attachment point.


-l [-v]

The -l option works as described in cfgadm(8). When paired with the
-v option, the "Information" field contains the following
SATA-specific information:

o Mfg: manufacturer string

o Product: product string

o No: product Serial Number


-o hardware_options

No hardware specific options are currently defined.


-s listing_options

Attachment points of class SATA can be listed by using the select
suboption. See cfgadm(8).


-t ap_id

Perform self-test of the SATA port, if supported by the SATA
controller. If a port self-test operation is not supported by the
SATA controller, an error message is issued.


-x hardware_function

Perform hardware specific function.

Some of the following commands used on the SATA ports or the SATA
controller may affect any SATA devices that have been attached, as
noted. ap_id refers to SATA port or the entire SATA controller, as
noted. If the operation implies unconfiguring a device, but it cannot
be unconfigured (that is, the device contains a mounted filesystem),
an error message is issued and the operation is not performed. An
error message will be also issued if the SATA controller does not
support specified operation.

sata_reset_device ap_id

Reset the SATA device attached to ap_id SATA port. The SATA port
state does not change.


sata_reset_port ap_id

Reset the SATA port specified by ap_id. If a SATA device is
attached to the port, it is also reset. This operation may be
also performed on the port to which a port multiplier is
connected. If a port multiplier is connected to the SATA
controller port, the SATA devices attached to the port multiplier
may not be reset


sata_reset_all ap_id

Reset SATA controller specified by the controller number part in
ap_id and all attached devices and re-enumerate all connected
devices, including port multipliers and devices connected to port
multipliers' device ports.

This operations implies unconfiguring all attached devices prior
to the operation. Any newly enumerated devices will be left
unconfigured.


sata_port_deactivate ap_id

Force the deactivation of the port when all else fails. This is
meant as an emergency step; use with caution.


sata_port_activate ap_id

Force the activation of a port. This is meant for emergency
situations on a port which was deactivated to recover from
errors.


sata_port_self_test ap_id

Perform self-test operation on the SATA controller. This
operation implies unconfiguring all devices and resetting the
SATA controller.


-v

Execute in verbose mode.

The following Transitions table reports the state transitions
resulting from the -c operations and hotplugging actions:

current state operation possible new state
------------- --------- ------------------
empty/
unconfigured/ok device plug-in connected/unconfigured/ok, or
disconnected/unconfigured/ok, or
disconnected/unconfigured/failed

empty/
unconfigured/ok -c unconfigure error message, no state change

empty/
unconfigured/ok -c configure error message, no state change

empty/
unconfigured/ok -c connect error message, no state change

empty/
unconfigured/ok -c disconnect disconnected/unconfigured/unknown, or
disconnected/unconfigured/failed

disconnected/
unconfigured/ok device unplug no state change

disconnected/
unconfigured/ok -c unconfigure error message, no state change

disconnected/
unconfigured/ok -c configure error message, no state change

disconnected/
unconfigured/ok -c connect error message, no state change

disconnected/
unconfigured/ok -c disconnect error message, no state change

disconnected/
unconfigured/
unknown
(no disk plugged) -c configure error message, state change to
empty/unconfigured/ok, or
disconnected/unconfigured/failed

disconnected/
unconfigured/
unknown -c configure state change to
(disk plugged) connected/configured/ok or,
connected/unconfigured/ok, or
disconnected/unconfigured/failed and
possible error message

disconnected/
unconfigured/
unknown -c connect empty/unconfigured/ok, or
connected/unconfigured/ok, or
disconnected/unconfigured/ok, or
disconnected/unconfigured/unknown, or
disconnected/unconfigured/failed

disconnected/
unconfigured/
unknown -c disconnect error message, no state change

disconnected/
unconfigured/
failed any command error message, no state change
other than
-x commands

connected/
unconfigured/ok disk unplug error message and state:
empty/unconfigured/ok, or
disconnected/unconfigured/failed

connected/
unconfigured/ok -c configure connected/unconfigured/ok, or
connected/configured/ok, or
disconnected/unconfigured/ok, or
disconnected/unconfigured/failed

connected/
unconfigured/ok -c unconfigure error message, no state change

connected/
unconfigured/ok -c connect error message, no state change

connected/
unconfigured/ok -c disconnect disconnected/unconfigured/unknown, or
disconnected/unconfigured/failed

connected/
configured/ok disk unplug error message and state:
empty/unconfigured/ok, or
disconnected/unconfigured/failed

connected/
configured/ok -c configure error message, no state change

connected/
configured/ok -c unconfigure error message, if device cannot be
unconfigured, no state change, or
connected/unconfigured/ok, or
disconnected/unconfigured/ok, or
disconnected/unconfigured/failed

connected/
configured/ok -c connect error message, no state change

connected/
configured/ok -c disconnect error message, if device cannot be
unconfigured, no state change, or
disconnected/unconfigured/unknown, or
disconnected/unconfigured/failed

EXAMPLES

Example 1: Configuring a Disk

The following command configures a disk attached to SATA controller 0,
port 0:


example# cfgadm -c configure sata0/0


This command should be issued only when there is a device connected to
the SATA port.

Example 2: Unconfiguring a Disk

The following command unconfigures a disk attached to SATA controller 0,
port 3:


example# cfgadm -c unconfigure sata0/3::dsk/c0t3d0


The device identifying string is shown when the attachment point
receptacle state is "connected" and occupant state is "configured".

Example 3: Encountering a Mounted File System While Unconfiguring a Disk

The following command illustrates encountering a mounted file system
while unconfiguring a disk:


example# cfgadm -c unconfigure sata1/5::dsk/c01t35d0


The system responds with the following:


cfgadm: Component system is busy, try again: failed to offline:
/devices/pci@0,0/pci8086,244e@1e/pci1095,3124@1/sd@5,0
Resource Information
------------------ --------------------------
/dev/dsk/c1t5d0s0 mounted filesystem "/mnt"

FILES

/usr/lib/cfgadm/sata.so.1
Hardware specific library for generic SATA
hot plugging.

SEE ALSO

config_admin(3CFGADM), libcfgadm(3LIB), attributes(7), cfgadm(8)

NOTES

The emergency "sata_port_deactivate" operation is not supported on ports
with attached disks containing critical partitions such as root (/),
/usr, swap, or /var. The deactivate operation should not be attempted on
such ports. Incorrect usage can result in a system hang and require a
reboot.


Hotplugging operations are not supported by all SATA controllers.


If SATA connectors are the hot-pluggable type and the SATA controller
supports hotplugging, a SATA device can be hotplugged at any time. The
system detects the event and establishes the communication with the
device. The device has to be configured by the explicit "cfgadm -c
configure ap_id" command.


If the SATA connectors are the hot-pluggable type and the SATA controller
supports hotplugging, unplugging a device without unconfiguring it may
result in system hang or data loss. If a device is unconfigured but
receptacle state is not in a disconnected state, unplugging a device from
the SATA port will result in error message.

WARNINGS

The connectors on some SATA devices do not conform to SATA hotplug
specifications. Performing hotplug operations on such devices can cause
damage to the SATA controller and/or the SATA device.


August 27, 2007 CFGADM_SATA(8)