96a93c63a8
libcam/Makefile: Add scsi_da.c to libcam for the new scsi_format_unit() function. camcontrol.8: Update the man page for the new format functionality, and take out the examples section describing how to do it with 'camcontrol cmd'. camcontrol.c: New format functionality. Note that unlike the rest of the camcontrol subcommands, this one is interactive by default. Because of the potential destructiveness of the format command, I thought it necessary to get confirmation from the user before spamming a disk. You can disable the interactive behavior, and the status meter with command line arguments. scsi_da.c: Add the new scsi_format_unit() cdb building function and use #ifdef _KERNEL to make this file compile in both the kernel and userland. The format unit function is currently only defined in the non-kernel case, because nothing in the kernel is using it. If that changes, it should be un-ifdefed and compiled in both cases. scsi_da.h: New function declaration, CDB structure and format data structures. Thanks to Nick Hibma for providing some valuable input on these changes.
734 lines
23 KiB
Groff
734 lines
23 KiB
Groff
.\"
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.\" Copyright (c) 1998, 1999, 2000 Kenneth D. Merry.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd September 14, 1998
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.Dt CAMCONTROL 8
|
|
.Os FreeBSD 3.0
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|
.Sh NAME
|
|
.Nm camcontrol
|
|
.Nd CAM control program
|
|
.Sh SYNOPSIS
|
|
.Nm camcontrol
|
|
.Aq command
|
|
.Op device id
|
|
.Op generic args
|
|
.Op command args
|
|
.Nm camcontrol
|
|
devlist
|
|
.Op Fl v
|
|
.Nm camcontrol
|
|
periphlist
|
|
.Op device id
|
|
.Op Fl n Ar dev_name
|
|
.Op Fl u Ar unit_number
|
|
.Nm camcontrol
|
|
tur
|
|
.Op device id
|
|
.Op generic args
|
|
.Nm camcontrol
|
|
inquiry
|
|
.Op device id
|
|
.Op generic args
|
|
.Op Fl D
|
|
.Op Fl S
|
|
.Op Fl R
|
|
.Nm camcontrol
|
|
start
|
|
.Op device id
|
|
.Op generic args
|
|
.Nm camcontrol
|
|
stop
|
|
.Op device id
|
|
.Op generic args
|
|
.Nm camcontrol
|
|
eject
|
|
.Op device id
|
|
.Op generic args
|
|
.Nm camcontrol
|
|
rescan
|
|
.Aq bus Ns Op :target:lun
|
|
.Nm camcontrol
|
|
reset
|
|
.Aq bus Ns Op :target:lun
|
|
.Nm camcontrol
|
|
defects
|
|
.Op device id
|
|
.Op generic args
|
|
.Aq Fl f Ar format
|
|
.Op Fl P
|
|
.Op Fl G
|
|
.Nm camcontrol
|
|
modepage
|
|
.Op device id
|
|
.Op generic args
|
|
.Aq Fl m Ar page
|
|
.Op Fl P Ar pgctl
|
|
.Op Fl e
|
|
.Op Fl d
|
|
.Nm camcontrol
|
|
cmd
|
|
.Op device id
|
|
.Op generic args
|
|
.Aq Fl c Ar cmd Op args
|
|
.Op Fl i Ar len Ar fmt
|
|
.Bk -words
|
|
.Op Fl o Ar len Ar fmt Op args
|
|
.Ek
|
|
.Nm camcontrol
|
|
debug
|
|
.Op Fl I
|
|
.Op Fl T
|
|
.Op Fl S
|
|
.Op Fl c
|
|
.Aq all|off|bus Ns Op :target Ns Op :lun
|
|
.Nm camcontrol
|
|
tags
|
|
.Op device id
|
|
.Op generic args
|
|
.Op Fl N Ar tags
|
|
.Op Fl q
|
|
.Op Fl v
|
|
.Nm camcontrol
|
|
negotiate
|
|
.Op device id
|
|
.Op generic args
|
|
.Op Fl c
|
|
.Op Fl D Ar enable|disable
|
|
.Op Fl O Ar offset
|
|
.Op Fl q
|
|
.Op Fl R Ar syncrate
|
|
.Op Fl T Ar enable|disable
|
|
.Op Fl U
|
|
.Op Fl W Ar bus_width
|
|
.Op Fl v
|
|
.Nm camcontrol
|
|
format
|
|
.Op device id
|
|
.Op generic args
|
|
.Op Fl q
|
|
.Op Fl w
|
|
.Op Fl y
|
|
.Nm camcontrol
|
|
help
|
|
.Sh DESCRIPTION
|
|
.Nm camcontrol
|
|
is a utility designed to provide a way for users to access and control the
|
|
.Tn FreeBSD
|
|
CAM subsystem.
|
|
.Pp
|
|
.Nm camcontrol
|
|
can cause a loss of data and/or system crashes if used improperly. Even
|
|
expert users are encouraged to exercise caution when using this command.
|
|
Novice users should stay away from this utility.
|
|
.Pp
|
|
.Nm camcontrol
|
|
has a number of primary functions, many of which support an optional
|
|
device identifier. A device identifier can take one of three forms:
|
|
.Bl -tag -width 01234567890123
|
|
.It deviceUNIT
|
|
Specify a device name and unit number combination, like "da5" or "cd3".
|
|
Note that character device node names (e.g. /dev/rsd0.ctl) are
|
|
.Em not
|
|
allowed here.
|
|
.It bus:target
|
|
Specify a bus number and target id. The bus number can be determined from
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|
the output of
|
|
.Dq camcontrol devlist .
|
|
The lun defaults to 0.
|
|
.It bus:target:lun
|
|
Specify the bus, target and lun for a device. (e.g. 1:2:0)
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|
.El
|
|
.Pp
|
|
The device identifier, if it is specified,
|
|
.Em must
|
|
come immediately after the function name, and before any generic or
|
|
function-specific arguments. Note that the
|
|
.Fl n
|
|
and
|
|
.Fl u
|
|
arguments described below will override any device name or unit number
|
|
specified beforehand. The
|
|
.Fl n
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|
and
|
|
.Fl u
|
|
arguments will
|
|
.Em not
|
|
override a specified bus:target or bus:target:lun, however.
|
|
.Pp
|
|
Most of the
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|
.Nm camcontrol
|
|
primary functions support these generic arguments:
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|
.Bl -tag -width 01234567890123
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|
.It Fl C Ar count
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|
SCSI command retry count. In order for this to work, error recovery
|
|
.Po
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|
.Fl E
|
|
.Pc
|
|
must be turned on.
|
|
.It Fl E
|
|
Instruct the kernel to perform generic SCSI error recovery for the given
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|
command. This is needed in order for the retry count
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|
.Po
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|
.Fl C
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|
.Pc
|
|
to be honored. Other than retrying commands, the generic error recovery in
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|
the code will generally attempt to spin up drives that are not spinning.
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|
It may take some other actions, depending upon the sense code returned from
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|
the command.
|
|
.It Fl n Ar dev_name
|
|
Specify the device type to operate on. The default is
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|
.Em da .
|
|
.It Fl t Ar timeout
|
|
SCSI command timeout in seconds. This overrides the default timeout for
|
|
any given command.
|
|
.It Fl u Ar unit_number
|
|
Specify the device unit number. The default is 0.
|
|
.It Fl v
|
|
Be verbose, print out sense information for failed SCSI commands.
|
|
.El
|
|
.Pp
|
|
Primary command functions:
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|
.Bl -tag -width periphlist
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|
.It devlist
|
|
List all physical devices (logical units) attached to the CAM subsystem.
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|
This also includes a list of peripheral drivers attached to each device.
|
|
With the
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|
.Fl v
|
|
argument, SCSI bus number, adapter name and unit numbers are printed as
|
|
well.
|
|
.It periphlist
|
|
List all peripheral drivers attached to a given physical device (logical
|
|
unit).
|
|
.It tur
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|
Send the SCSI test unit ready (0x00) command to the given device.
|
|
.Nm camcontrol
|
|
will report whether the device is ready or not.
|
|
.It inquiry
|
|
Send a SCSI inquiry command (0x12) to a device. By default,
|
|
.Nm camcontrol
|
|
will print out the standard inquiry data, device serial number, and
|
|
transfer rate information. The user can specify that only certain types of
|
|
inquiry data be printed:
|
|
.Bl -tag -width 1234
|
|
.It Fl D
|
|
Get the standard inquiry data.
|
|
.It Fl S
|
|
Print out the serial number. If this flag is the only one specified,
|
|
.Nm camcontrol
|
|
will not print out "Serial Number" before the value returned by the drive.
|
|
This is to aid in script writing.
|
|
.It Fl R
|
|
Print out transfer rate information.
|
|
.El
|
|
.It start
|
|
Send the SCSI Start/Stop Unit (0x1B) command to the given device with the
|
|
start bit set.
|
|
.It stop
|
|
Send the SCSI Start/Stop Unit (0x1B) command to the given device with the
|
|
start bit cleared.
|
|
.It eject
|
|
Send the SCSI Start/Stop Unit (0x1B) command to the given device with the
|
|
start bit cleared and the eject bit set.
|
|
.It rescan
|
|
Tell the kernel to scan the given bus (XPT_SCAN_BUS), or bus:target:lun
|
|
(XPT_SCAN_LUN) for new devices or devices that have gone away. The user
|
|
may only specify a bus to scan, or a lun. Scanning all luns on a target
|
|
isn't supported.
|
|
.It reset
|
|
Tell the kernel to reset the given bus (XPT_RESET_BUS) by issuing a SCSI bus
|
|
reset for that bus, or to reset the given bus:target:lun
|
|
(XPT_RESET_DEV), typically by issuing a BUS DEVICE RESET message after
|
|
connecting to that device.
|
|
Note that this can have a destructive impact
|
|
on the system.
|
|
.It defects
|
|
Send the SCSI READ DEFECT DATA (10) command (0x37) to the given device, and
|
|
print out any combination of: the total number of defects, the primary
|
|
defect list (PLIST), and the grown defect list (GLIST).
|
|
.Bl -tag -width 01234567890
|
|
.It Fl f Ar format
|
|
The three format options are:
|
|
.Em block ,
|
|
to print out the list as logical blocks,
|
|
.Em bfi ,
|
|
to print out the list in bytes from index format, and
|
|
.Em phys ,
|
|
to print out the list in physical sector format. The format argument is
|
|
required. Most drives support the physical sector format. Some drives
|
|
support the logical block format. Many drives, if they don't support the
|
|
requested format, return the data in an alternate format, along with sense
|
|
information indicating that the requested data format isn't supported.
|
|
.Nm camcontrol
|
|
attempts to detect this, and print out whatever format the drive returns.
|
|
If the drive uses a non-standard sense code to report that it doesn't
|
|
support the requested format,
|
|
.Nm camcontrol
|
|
will probably see the error as a failure to complete the request.
|
|
.It Fl G
|
|
Print out the grown defect list. This is a list of bad blocks that have
|
|
been remapped since the disk left the factory.
|
|
.It Fl P
|
|
Print out the primary defect list.
|
|
.El
|
|
.Pp
|
|
If neither
|
|
.Fl P
|
|
nor
|
|
.Fl G
|
|
is specified,
|
|
.Nm camcontrol
|
|
will print out the number of defects given in the READ DEFECT DATA header
|
|
returned from the drive.
|
|
.It modepage
|
|
Allows the user to display and optionally edit a SCSI mode page. The mode
|
|
page formats are located in
|
|
.Pa /usr/share/misc/scsi_modes .
|
|
This can be overridden by specifying a different file in the
|
|
.Ev SCSI_MODES
|
|
environment variable. The modepage command takes several arguments:
|
|
.Bl -tag -width 012345678901
|
|
.It Fl d
|
|
Disable block descriptors for mode sense.
|
|
.It Fl e
|
|
This flag allows the user to edit values in the mode page.
|
|
.It Fl m Ar mode_page
|
|
This specifies the number of the mode page the user would like to view
|
|
and/or edit. This argument is mandatory.
|
|
.It Fl P Ar pgctl
|
|
This allows the user to specify the page control field. Possible values are:
|
|
.Bl -tag -width xxx -compact
|
|
.It 0
|
|
Current values
|
|
.It 1
|
|
Changeable values
|
|
.It 2
|
|
Default values
|
|
.It 3
|
|
Saved values
|
|
.El
|
|
.El
|
|
.It cmd
|
|
Allows the user to send an arbitrary SCSI CDB to any device. The cmd
|
|
function requires the
|
|
.Fl c
|
|
argument to specify the CDB. Other arguments are optional, depending on
|
|
the command type. The command and data specification syntax is documented
|
|
in
|
|
.Xr cam_cdbparse 3 .
|
|
NOTE: If the CDB specified causes data to be transfered to or from the
|
|
SCSI device in question, you MUST specify either
|
|
.Fl i
|
|
or
|
|
.Fl o .
|
|
.Bl -tag -width 01234567890123456
|
|
.It Fl c Ar cmd Op args
|
|
This specifies the SCSI CDB. CDBs may be 6, 10, 12 or 16 bytes.
|
|
.It Fl i Ar len Ar fmt
|
|
This specifies the amount of data to read, and how it should be displayed.
|
|
If the format is
|
|
.Sq - ,
|
|
.Ar len
|
|
bytes of data will be read from the device and written to standard output.
|
|
.It Fl o Ar len Ar fmt Op args
|
|
This specifies the amount of data to be written to a device, and the data
|
|
that is to be written. If the format is
|
|
.Sq - ,
|
|
.Ar len
|
|
bytes of data will be read from standard input and written to the device.
|
|
.El
|
|
.It debug
|
|
Turn on CAM debugging printfs in the kernel. This requires options CAMDEBUG
|
|
in your kernel config file. WARNING: enabling debugging printfs currently
|
|
causes an EXTREME number of kernel printfs. You may have difficulty
|
|
turning off the debugging printfs once they start, since the kernel will be
|
|
busy printing messages and unable to service other requests quickly.
|
|
The debug function takes a number of arguments:
|
|
.Bl -tag -width 012345678901234567
|
|
.It Fl I
|
|
Enable CAM_DEBUG_INFO printfs.
|
|
.It Fl T
|
|
Enable CAM_DEBUG_TRACE printfs.
|
|
.It Fl S
|
|
Enable CAM_DEBUG_SUBTRACE printfs.
|
|
.It Fl c
|
|
Enable CAM_DEBUG_CDB printfs. This will cause the kernel to print out the
|
|
SCSI CDBs sent to the specified device(s).
|
|
.It all
|
|
Enable debugging for all devices.
|
|
.It off
|
|
Turn off debugging for all devices
|
|
.It bus Ns Op :target Ns Op :lun
|
|
Turn on debugging for the given bus, target or lun. If the lun or target
|
|
and lun are not specified, they are wildcarded. (i.e., just specifying a
|
|
bus turns on debugging printfs for all devices on that bus.)
|
|
.El
|
|
.It tags
|
|
Show or set the number of "tagged openings" or simultaneous transactions
|
|
we attempt to queue to a particular device. By default, the
|
|
.Sq tags
|
|
command, with no command-specific arguments (i.e. only generic arguments)
|
|
prints out the "soft" maximum number of transactions that can be queued to
|
|
the device in question. For more detailed information, use the
|
|
.Fl v
|
|
argument described below.
|
|
.Bl -tag -width 0123456
|
|
.It Fl N Ar tags
|
|
Set the number of tags for the given device. This must be between the
|
|
minimum and maximum number set in the kernel quirk table. The default for
|
|
most devices that support tagged queueing is a minimum of 2 and a maximum
|
|
of 255. The minimum and maximum values for a given device may be
|
|
determined by using the
|
|
.Fl v
|
|
switch. The meaning of the
|
|
.Fl v
|
|
switch for this
|
|
.Nm camcontrol
|
|
subcommand is described below.
|
|
.It Fl q
|
|
Be quiet, and don't report the number of tags. This is generally used when
|
|
setting the number of tags.
|
|
.It Fl v
|
|
The verbose flag has special functionality for the
|
|
.Em tags
|
|
argument. It causes
|
|
.Nm camcontrol
|
|
to print out the tagged queueing related fields of the XPT_GDEV_TYPE CCB:
|
|
.Bl -tag -width 0123456789012
|
|
.It dev_openings
|
|
This is the amount of capacity for transactions queued to a given device.
|
|
.It dev_active
|
|
This is the number of transactions currently queued to a device.
|
|
.It devq_openings
|
|
This is the kernel queue space for transactions. This count usually mirrors
|
|
dev_openings except during error recovery operations when
|
|
the device queue is frozen (device is not allowed to receive
|
|
commands), the number of dev_openings is reduced, or transaction
|
|
replay is occurring.
|
|
.It devq_queued
|
|
This is the number of transactions waiting in the kernel queue for capacity
|
|
on the device. This number is usually zero unless error recovery is in
|
|
progress.
|
|
.It held
|
|
The held count is the number of CCBs held by peripheral drivers that have
|
|
either just been completed or are about to be released to the transport
|
|
layer for service by a device. Held CCBs reserve capacity on a given
|
|
device.
|
|
.It mintags
|
|
This is the current "hard" minimum number of transactions that can be
|
|
queued to a device at once. The
|
|
.Ar dev_openings
|
|
value above cannot go below this number. The default value for
|
|
.Ar mintags
|
|
is 2, although it may be set higher or lower for various devices.
|
|
.It maxtags
|
|
This is the "hard" maximum number of transactions that can be queued to a
|
|
device at one time. The
|
|
.Ar dev_openings
|
|
value cannot go above this number. The default value for
|
|
.Ar maxtags
|
|
is 255, although it may be set higher or lower for various devices.
|
|
.El
|
|
.El
|
|
.It negotiate
|
|
Show or negotiate various communication parameters. Some controllers may
|
|
not support setting or changing some of these values. For instance, the
|
|
Adaptec 174x controllers do not support changing a device's sync rate or
|
|
offset.
|
|
.Nm camcontrol
|
|
will not attempt to set the parameter if the controller indicates that it
|
|
does not support setting the parameter. To find out what the controller
|
|
supports, use the
|
|
.Fl v
|
|
flag. The meaning of the
|
|
.Fl v
|
|
flag for the
|
|
.Sq negotiate
|
|
command is described below. Also, some controller drivers don't support
|
|
setting negotiation parameters, even if the underlying controller supports
|
|
negotiation changes. Some controllers, such as the Advansys wide
|
|
controllers, support enabling and disabling synchronous negotiation for
|
|
a device, but do not support setting the synchronous negotiation rate.
|
|
.Bl -tag -width 01234567890123456
|
|
.It Fl a
|
|
Attempt to make the negotiation settings take effect immediately by sending
|
|
a Test Unit Ready command to the device.
|
|
.It Fl c
|
|
Show or set current negotiation settings. This is the default.
|
|
.It Fl D Ar enable|disable
|
|
Enable or disable disconnection.
|
|
.It Fl O Ar offset
|
|
Set the command delay offset.
|
|
.It Fl q
|
|
Be quiet, don't print anything. This is generally useful when you want to
|
|
set a parameter, but don't want any status information.
|
|
.It Fl R Ar syncrate
|
|
Change the synchronization rate for a device. The sync rate is a floating
|
|
point value specified in MHz. So, for instance,
|
|
.Sq 20.000
|
|
is a legal value, as is
|
|
.Sq 20 .
|
|
.It Fl T Ar enable|disable
|
|
Enable or disable tagged queueing for a device.
|
|
.It Fl U
|
|
Show or set user negotiation settings. The default is to show or set
|
|
current negotiation settings.
|
|
.It Fl v
|
|
The verbose switch has special meaning for the
|
|
.Sq negotiate
|
|
subcommand. It causes
|
|
.Nm camcontrol
|
|
to print out the contents of a Path Inquiry (XPT_PATH_INQ) CCB sent to the
|
|
controller driver.
|
|
.It Fl W Ar bus_width
|
|
Specify the bus width to negotiate with a device. The bus width is
|
|
specified in bits. The only useful values to specify are 8, 16, and 32
|
|
bits. The controller must support the bus width in question in order for
|
|
the setting to take effect.
|
|
.El
|
|
.Pp
|
|
In general, sync rate and offset settings will not take effect for a
|
|
device until a command has been sent to the device. The
|
|
.Fl a
|
|
switch above will automatically send a Test Unit Ready to the device so
|
|
negotiation parameters will take effect.
|
|
.It format
|
|
Issue the
|
|
.Tn SCSI
|
|
FORMAT UNIT command to the named device.
|
|
.Pp
|
|
.Em WARNING! WARNING! WARNING!
|
|
.Pp
|
|
Low level formatting a disk will destroy ALL data on the disk. Use
|
|
extreme caution when issuing this command. Many users low-level format
|
|
disks that do not really need to be low-level formatted. There are
|
|
relatively few scenarios that call for low-level formatting a disk.
|
|
One reason for
|
|
low-level formatting a disk is to initialize the disk after changing
|
|
its physical sector size. Another reason for low-level formatting a disk
|
|
is to revive the disk if you are getting "medium format corrupted" errors
|
|
from the disk in response to read and write requests.
|
|
.Pp
|
|
Some disks take longer than others to format. Users should specify a
|
|
timeout long enough to allow the format to complete. The default format
|
|
timeout is 3 hours, which should be long enough for most disks. Some hard
|
|
disks will complete a format operation in a very short period of time
|
|
(on the order of 5 minutes or less). This is often because the drive
|
|
doesn't really support the FORMAT UNIT command -- it just accepts the
|
|
command, waits a few minutes and then returns it.
|
|
.Pp
|
|
The
|
|
.Sq format
|
|
subcommand takes several arguments that modify its default behavior. The
|
|
.Fl q
|
|
and
|
|
.Fl y
|
|
arguments can be useful for scripts.
|
|
.Pp
|
|
.Bl -tag -width 123456
|
|
.It Fl q
|
|
Be quiet, don't print any status messages. This option will not disable
|
|
the questions, however. To disable questions, use the
|
|
.Fl y
|
|
argument, below.
|
|
.It Fl w
|
|
Issue a non-immediate format command. By default,
|
|
.Nm camcontrol
|
|
issues the FORMAT UNIT command with the immediate bit set. This tells the
|
|
device to immediately return the format command, before the format has
|
|
actually completed. Then,
|
|
.Nm camcontrol
|
|
gathers
|
|
.Tn SCSI
|
|
sense information from the device every second to determine how far along
|
|
in the format process it is. If the
|
|
.Fl w
|
|
argument is specified,
|
|
.Nm camcontrol
|
|
will issue a non-immediate format command, and will be unable to print any
|
|
information to let the user know what percentage of the disk has been
|
|
formatted.
|
|
.It Fl y
|
|
Don't ask any questions. By default,
|
|
.Nm camcontrol
|
|
will ask the user if he/she really wants to format the disk in question,
|
|
and also if the default format command timeout is acceptable. The user
|
|
will not be asked about the timeout if a timeout is specified on the
|
|
command line.
|
|
.El
|
|
.It help
|
|
Print out verbose usage information.
|
|
.El
|
|
.Sh ENVIRONMENT
|
|
The
|
|
.Ev SCSI_MODES
|
|
variable allows the user to specify an alternate mode page format file.
|
|
.Pp
|
|
The
|
|
.Ev EDITOR
|
|
variable determines which text editor
|
|
.Nm camcontrol
|
|
starts when editing mode pages.
|
|
.Sh FILES
|
|
.Bl -tag -width /usr/share/misc/scsi_modes -compact
|
|
.It Pa /usr/share/misc/scsi_modes
|
|
is the SCSI mode format database.
|
|
.It Pa /dev/xpt0
|
|
is the transport layer device.
|
|
.It Pa /dev/pass*
|
|
are the CAM application passthrough devices.
|
|
.El
|
|
.Sh EXAMPLES
|
|
.Dl camcontrol eject -n cd -u 1 -v
|
|
.Pp
|
|
Eject the CD from cd1, and print SCSI sense information if the command
|
|
fails.
|
|
.Pp
|
|
.Dl camcontrol tur
|
|
.Pp
|
|
Send the SCSI test unit ready command to da0.
|
|
.Nm camcontrol
|
|
will report whether the disk is ready, but will not display sense
|
|
information if the command fails since the
|
|
.Fl v
|
|
switch was not specified.
|
|
.Pp
|
|
.Bd -literal -offset indent
|
|
camcontrol tur da1 -E -C 4 -t 50 -v
|
|
.Ed
|
|
.Pp
|
|
Send a test unit ready command to da1. Enable kernel error recovery.
|
|
Specify a retry count of 4, and a timeout of 50 seconds. Enable sense
|
|
printing (with the
|
|
.Fl v
|
|
flag) if the command fails. Since error recovery is turned on, the
|
|
disk will be spun up if it is not currently spinning.
|
|
.Nm camcontrol
|
|
will report whether the disk is ready.
|
|
.Bd -literal -offset indent
|
|
camcontrol cmd -n cd -u 1 -v -c "3C 00 00 00 00 00 00 00 0e 00" \e
|
|
-i 0xe "s1 i3 i1 i1 i1 i1 i1 i1 i1 i1 i1 i1"
|
|
.Ed
|
|
.Pp
|
|
Issue a READ BUFFER command (0x3C) to cd1. Display the buffer size of cd1,
|
|
and display the first 10 bytes from the cache on cd1. Display SCSI sense
|
|
information if the command fails.
|
|
.Pp
|
|
.Bd -literal -offset indent
|
|
camcontrol cmd -n cd -u 1 -v -c "3B 00 00 00 00 00 00 00 0e 00" \e
|
|
-o 14 "00 00 00 00 1 2 3 4 5 6 v v v v" 7 8 9 8
|
|
.Ed
|
|
.Pp
|
|
Issue a WRITE BUFFER (0x3B) command to cd1. Write out 10 bytes of data,
|
|
not including the (reserved) 4 byte header. Print out sense information if
|
|
the command fails. Be very careful with this command, improper use may
|
|
cause data corruption.
|
|
.Pp
|
|
.Bd -literal -offset indent
|
|
camcontrol modepage da3 -m 1 -e -P 3
|
|
.Ed
|
|
.Pp
|
|
Edit mode page 1 (the Read-Write Error Recover page) for da3, and save the
|
|
settings on the drive. Mode page 1 contains a disk drive's auto read and
|
|
write reallocation settings, among other things.
|
|
.Pp
|
|
.Dl camcontrol rescan 0
|
|
.Pp
|
|
Rescan SCSI bus 0 for devices that have been added, removed or changed.
|
|
.Pp
|
|
.Dl camcontrol rescan 0:1:0
|
|
.Pp
|
|
Rescan SCSI bus 0, target 1, lun 0 to see if it has been added, removed, or
|
|
changed.
|
|
.Pp
|
|
.Dl camcontrol tags da5 -N 24
|
|
.Pp
|
|
Set the number of concurrent transactions for da5 to 24.
|
|
.Pp
|
|
.Bd -literal -offset indent
|
|
camcontrol negotiate -n da -u 4 -T disable
|
|
.Ed
|
|
.Pp
|
|
Disable tagged queueing for da4.
|
|
.Pp
|
|
.Bd -literal -offset indent
|
|
camcontrol negotiate -n da -u 3 -R 20.000 -O 15 -a
|
|
.Ed
|
|
.Pp
|
|
Negotiate a sync rate of 20MHz and an offset of 15 with da3. Then send a
|
|
Test Unit Ready command to make the settings take effect.
|
|
.Sh SEE ALSO
|
|
.Xr cam 3 ,
|
|
.Xr cam_cdbparse 3 ,
|
|
.Xr cam 4 ,
|
|
.Xr pass 4 ,
|
|
.Xr xpt 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm camcontrol
|
|
command first appeared in
|
|
.Fx 3.0 .
|
|
.Pp
|
|
The mode page editing code and arbitrary SCSI command code are based upon
|
|
code in the old
|
|
.Xr scsi 8
|
|
utility and
|
|
.Xr scsi 3
|
|
library, written by Julian Elischer and Peter Dufault. The
|
|
.Xr scsi 8
|
|
program first appeared in 386BSD 0.1.2.4, and first appeared in
|
|
.Tn FreeBSD
|
|
in
|
|
.Fx 2.0.5 .
|
|
.Sh AUTHORS
|
|
.An Kenneth Merry Aq ken@FreeBSD.org
|
|
.Sh BUGS
|
|
The code that parses the generic command line arguments doesn't know that
|
|
some of the subcommands take multiple arguments. So if, for instance, you
|
|
tried something like this:
|
|
.Bd -literal -offset indent
|
|
camcontrol cmd -n da -u 1 -c "00 00 00 00 00 v" 0x00 -v
|
|
.Ed
|
|
.Pp
|
|
The sense information from the test unit ready command would not get
|
|
printed out, since the first
|
|
.Xr getopt 3
|
|
call in
|
|
.Nm camcontrol
|
|
bails out when it sees the second argument to
|
|
.Fl c
|
|
.Po
|
|
0x00
|
|
.Pc ,
|
|
above. Fixing this behavior would take some gross code, or changes to the
|
|
.Xr getopt 3
|
|
interface. The best way to circumvent this problem is to always make sure
|
|
to specify generic
|
|
.Nm camcontrol
|
|
arguments before any command-specific arguments.
|