-H
--health
Have the device to report its SMART health status or pending TapeAlert messages.
SMART overall-health self-assessment test result: PASSED
If the device reports failing health status,
it has already failed, or
is predicting failure within the next 24 hours.
use --all to get more information, and
get your data off the disk and to someplace safe as soon as you can.
| -i
--info Displays the device model number, serial number, firmware version, and ATA Standard version/revision information.
Reports if the device supports SMART, and whether SMART support is currently enabled or disabled.
If the device supports Logical Block Address mode (LBA mode) display current user drive capacity in bytes.
(If drive is has a user protected area reserved, or is "clipped", this will be less than the maximum drive capacity.)
example
shows if the drive model is in the smartmontools database (see -v ).
If so, the drive model family may also be displayed.
If n is specified, the power mode of the drive is displayed. example
| -c
--capabilities
[ATA only] displays only the generic SMART capabilities. These show what SMART features are
implemented and how the device will respond to some of the different SMART commands. For
example it shows if the device logs errors, if it supports offline surface scanning, and so
on. If the device can carry out self-tests, this option also shows the estimated time required to run those tests.
the time required to run the Self-tests (listed in minutes) are fixed. However the
time required to run the Immediate Offline Test (listed in seconds) is variable. This means
that if you issue a command to perform an Immediate Offline test with the -t offline option,
then the time may jump to a larger value and then count down as the Immediate Offline Test is
carried out.
See references
| -A
--attributes
all☟
SMART Attributes
Numbered from 1 to 253 each has specific names and ID numbers.
For example:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 1164
Each has "Normalized" (VALUE) and
"Raw" (RAW_VALUE) values displayed in base-10. In
the example the "Raw Value" for Attribute 12 would be the actual number of times
that the disk has been power-cycled in this case 1,164.example 365 if the disk has been turned on once per
day for a year.
This not specified by the SMART standard, each vendor uses their own algorithm to convert "Raw" value to
a "Normalized" value in the range from 1 to 254. Smartctl
reports the attributes as read from the device. The disk's firmware converts from "Raw" and "Normalized".
In most cases, the values are sensible.
For example the temperature Attribute generally has its raw value equal to the temperature in Celsius.
In
some cases vendors use unusual conventions. For example the Hitachi disk on my laptop reports
its power-on hours in minutes, not hours. Some IBM disks track three temperatures rather than
one, in their raw values. And so on.
Each Attribute also has a Threshold value (whose range is 0 to 255) which is displayed under the
heading "THRESH". If the Normalized value is less than or equal to the Threshold value, then
the Attribute is said to have failed. If the Attribute is a pre-failure Attribute, then disk
failure is imminent.
Each Attribute also has a "Worst" value shown under the heading "WORST". This is the smallest
(closest to failure) value that the disk has recorded at any time during its lifetime when
SMART was enabled. [some vendors firmware may actually increase the "Worst"
value for some "rate-type" Attributes.]
Attribute Type
Pre-failure attributes are ones which,
if less than or equal to their threshold values, indicate pending disk failure,
but does not mean that the disk is about to fail!
Old age, or usage Attributes, are ones which indicate end-of-product life from old-age or normal aging and
wearout, if the Attribute value is less than or equal to the threshold.
If the Attribute's current Normalized value is less than or equal to the threshold value, then
the "WHEN_FAILED" column will display "FAILING_NOW".
If current is greater than threshold but the worst recorded value is less than or equal to the threshold value, then this column will display "In_the_past".
If the "WHEN_FAILED" column has no entry (indicated by a dash: - then this Attribute is OK now
(not failing) and has also never failed in the past.
The "UPDATED" column shows if the Attribute values are updated during both
normal operation and off-line testing("Always") , or only during offline testing("Offline").
The Raw Attribute values are the ones that might have a real physical interpretation,
such as "Temperature Celsius", "Hours", or "Start-Stop Cycles".
Each manufacturer converts these, using their detailed knowledge of the disk's operations and failure modes, to
Normalized Attribute values in the range 1-254.
The current and worst (lowest measured) of
these Normalized Attribute values are stored on the disk, along with a Threshold value that
the manufacturer has determined will indicate that the disk is going to fail, or that it has
exceeded its design age or aging limit.
smartctl does not calculate any of the Attribute values, thresholds, or types, it merely reports them .
With ATA/ATAPI-4, revision 4, the meaning of these Attribute fields has
been made entirely vendor-specific. most ATA/ATAPI-5 disks seem to respect their meaning.
[SCSI] obtained from the temperature and start-stop cycle counter log pages.
Certain vendor specific attributes are listed if recognised in a relatively free format
-a
--all
Xall☟
displays nearly all SMART information
./smartctl -a /dev/disk0
smartctl 5.39.1 2010-01-28 r3054 [x86_64-apple-darwin10.4.0] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Device Model: Hitachi HTS545032B9SA02
Serial Number: 091030PBDC00QDKA2NHN
Firmware Version: PB3AC60T
User Capacity: 320,072,933,376 bytes
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 6
Local Time is: Fri Jul 23 22:24:51 2010 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
|
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run. |
or
| (nnn Self-test routine in progress...
n0% of test remaining.
| |
Total time to complete Offline
data collection: ( 645) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 106) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 062 Pre-fail Always - 0
2 Throughput_Performance 0x0005 100 100 040 Pre-fail Offline - 0
3 Spin_Up_Time 0x0007 164 164 033 Pre-fail Always - 2
4 Start_Stop_Count 0x0012 099 099 000 Old_age Always - 2156
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 121
7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0
8 Seek_Time_Performance 0x0005 100 100 040 Pre-fail Offline - 0
9 Power_On_Hours 0x0012 096 096 000 Old_age Always - 2100
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 1164
160 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
191 G-Sense_Error_Rate 0x000a 100 100 000 Old_age Always - 644245094400
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 116044988434
193 Load_Cycle_Count 0x0012 091 091 000 Old_age Always - 97884
194 Temperature_Celsius 0x0002 161 161 000 Old_age Always - 34 (Lifetime Min/Max 13/41)
195 Hardware_ECC_Recovered 0x000a 100 100 000 Old_age Always - 0
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 246
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 2
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0
223 Load_Retry_Count 0x000a 100 100 000 Old_age Always - 0
254 Free_Fall_Sensor 0x0032 077 077 000 Old_age Always - 8589940590
continuing
|
For ATA devices this is equivalent to:
--health -i -A -l error -l selftest -l selective
for ATA disks this does not enable the non-SMART options and the SMART options which require support for 48-bit ATA commands.
For SCSI this is equivalent to:
--health -i -A -l error -l selftest
| -x
--xall | outputs all SMART and non-SMART information about the device.
For ATA devices this is equivalent to
--health -i -c -A -l xerror,error -l xselftest,selftest -l selective -l directory -l scttemp -l sataphy.
For SCSI, this is equivalent to
--health -i -A -l error -l selftest -l background -l sasphy.
example of additional entries shown with -x not shown with -a
| -l† TYPE
--log=TYPE|
displays logs
|
--log=error |
Displays the Summary error log. SMART disks maintain a log of the most
recent five non-trivial errors. For each of these errors, the disk power-on lifetime at which
the error occurred is displayed, as is the device status (idle, standby, etc) at the time of
the error.
For some common types of errors, the Error Register (ER) and Status Register (SR)
values are decoded and displayed as text.
ABRT| Command ABoRTed
| AMNF| Address Mark Not Found
| CCTO| Command Completion Timed Out
| EOM| End Of Media
| ICRC| Interface Cyclic Redundancy Code (CRC) error
| IDNF| IDentity Not Found
| ILI| (packet command-set specific)
| MC| Media Changed
| MCR| Media Change Request
| NM| No Media
| obs| obsolete
| TK0NF| TracK 0 Not Found
| UNC| UNCorrectable Error in Data
| WP| Media is Write Protected
| | | | | | | | | | | | | | |
Times from the start of the power cycle, is displayed as Dd+HH:MM:SS.msec where D days, HH hours, MM minutes, SS seconds
and msec milliseconds. †.
Key registers are recorded in the log along with a description of the command from the Command Register (CR) and Feature Register (FR).
Included are UNC errors, IDNF errors, servo errors, write fault errors, etc. Errors attributed to faulty commands are not in the errlog./
with invalid parameters or invalid addresses."
- UNC (UNCorrectable): data is uncorrectable i.e., the Error Checking and Correction (ECC) codes are inconsistent.
- IDNF (ID Not Found): address could not be found.
For READ LOG, IDNF can indicate a data log structure with incorrect checksum.
For READ or WRITEs the Logical Block Address (LBA) is displayed in base 10 and base 16.
| --log=error | [SCSI] displays the error counter log pages for reads, write and verifies. The verify
row is only output if it has an element other than zero.
| --log=xerror
[,NUM][,error] | Displays the Extended Comprehensive SMART error log (see --log=error)
NUM of recent entries displayed. Default 8.
If ,error is appended and the Extended Comprehensive SMART error log is not supported, the Summary SMART self-test log is displayed.
Some recent (e.g. Samsung) drives report errors only in the Comprehensive
SMART error log. The Summary SMART error log can be read but is always empty.
| --log=selftest displays the SMART self-test log.
If the test did not complete the percentage remaining is shown.
The time at which the test hours of disk lifetime.
| --log=selftest
For each of the most recent twenty self-tests, it shows the type of test and
the status (final or in progress) of the test. SCSI standards use the terms "foreground" and
"background" (rather than ATA's corresponding "captive" and "off-line") and "short" and "long"
(rather than ATA's corresponding "short" and "extended") to describe the type of the test.
The displayed segment number is only relevant when a test fails in the third or later test segment.
It identifies the test that failed and consists of either the number of the segment
that failed during the test, or the number of the test that failed and the number of the segment
in which the test was run, using a vendor-specific method of putting both numbers into a
single byte.
The Logical Block Address (LBA) of the first error is displayed in hexadecimal
notation. On Linux systems the smartmontools web page has instructions about how to convert
this LBA address to the name of the disk file containing the erroneous block. If provided,
the SCSI Sense Key (SK), Additional Sense Code (ASC) and Additional Sense Code Qualifier (ASQ) are also displayed.
The self tests can be run using -t (using the ATA test terminology).
| --log=xselftest
[,NUM][,selftest] [ATA only] [NEW EXPERIMENTAL SMARTCTL FEATURE] displays the
Extended SMART self-test log (General Purpose Log address 0x07). Unlike the SMART self-test
log (see --log=selftest above), it supports 48-bit LBA and logs with more than one sector.
Each sector holds up to 19 log entries. The actual number of log sectors is vendor specific,
typical values are 1 (Seagate) or 2 (Samsung).
Only the 25 most recent log entries are displayed by default. This number can be changed by the optional parameter NUM.
If ',selftest' is appended and the Extended SMART self-test log is not supported, the old
SMART self-test log is displayed.
| --log=selective [ATA only] see -t select for a description of selective
self-tests. The selective self-test log shows the start/end Logical Block Addresses (LBA) of
each of the five test spans, and their current test status. If the span is being tested or
the remainder of the disk is being read-scanned, the current 65536-sector block of LBAs being
tested is also displayed. The selective self-test log also shows if a read-scan of the
remainder of the disk will be carried out after the selective self-test has completed (see -t
afterselect option) and the time delay before restarting this read-scan if it is interrupted
(see -t pending option). This is a new smartmontools feature; please report unusual or
incorrect behavior to the smartmontools-support mailing list.
| --log=directory[,g|s] [ATA only]
General Purpose Logging feature.
Displays the Log Directory (the log at address 0).
Shows available logs and their length in sectors (512 bytes).
The output can be restricted to the GPL directory or SL directory by
--log=directory,g or --log=directory,s .
| --log=background [SCSI only]
The background scan results log contains information derived from
Background Media Scans (BMS) done after power up and/or periodocally (e.g. every 24 hours) on SCSI disks.
Status a background scan is in progress (and progress percentage), the amount of time the
disk has been powered up and the number of scans already completed.
Background scan "event"s are typically recovered or unrecoverable errors which need intervention.
|
--log=scttempsts scttemphist
scttemp [ATA only] displays the disk temperature information provided
by the SMART Command Transport (SCT) commands.
'scttempsts' displays current temperature and temperature ranges returned by the SCT Status command,
'scttemphist' displays temperature limits and the temperature history table returned by the SCT Data Table command, and
'scttemp' displays both.
The temperature values are preserved across power cycles. The default
temperature logging interval is 1 minute and can be configured with the -t scttempint,N[,p]
| --log=sataphy[,reset]
[SATA only]
[NEW EXPERIMENTAL SMARTCTL FEATURE]
displays values and descriptions of the SATA Phy Event Counters (General Purpose Log address 0x11).
If -l sataphy,reset is specified, all counters are reset after reading the values.
| --log=sasphy[,reset] [SAS (SCSI) only]
[NEW EXPERIMENTAL SMARTCTL FEATURE]
displays values and
descriptions of the SAS (SSP) Protocol Specific log page (log page 0x18).
If -l sasphy,reset is specified, all counters are reset after reading the values.
| --log=gplog,
ADDR[,First[-Last|+Size]] [ATA only] [NEW EXPERIMENTAL SMARTCTL FEATURE] displays a hex
dump of any log accessible via General Purpose Logging (GPL) feature.
The log address ADDR is
the hex address listed in the log directory (see --log directory ).
The range of log sectors (pages) can be specified by decimal values FIRST-LAST or FIRST+SIZE. FIRST defaults to 0,
SIZE defaults to 1. LAST can be set to 'max' to specify the last page of the log.
| --log=smartlog,
ADDR[,F[-L|+S]] [ATA only] [NEW EXPERIMENTAL SMARTCTL FEATURE] displays a
hex dump of any log accessible via SMART Read Log command. See --log=gplog,... above for parameter syntax.
For example, all these commands:
smartctl -l gplog,0x80,10-15 /dev/sda
smartctl -l gplog,0x80,10+6 /dev/sda
smartctl -l smartlog,0x80,10-15 /dev/sda
display pages 10-15 of log 0x80 (first host vendor specific log).
The hex dump format is compatible with the 'xxd -r' command.
smartctl -l gplog,0x11 /dev/sda | grep ^0 | xxd -r >log.bin
writes a binary representation of the one sector log 0x11 (SATA Phy Event Counters) to file log.bin.
| | | | |
| | | | | | |
| | expert options to format SMART data using custom formatting
|
|---|
-v ID,FORMAT[,NAME]
--vendorattribute=
ID,FORMAT[,NAME]
[ATA only] Sets a vendor-specific raw value display FORMAT and optional NAME for Attribute ID.
May be used multiple times.
The Attribute ID range is 1 to 255.
If N is specified as ID, the settings for all Attributes are changed.
NAME is a string of letters, digits and underscore.
| -v help - | displays formatting specifications available then exits.
raw8 | six 8-bit unsigned base-10 integers | for decoding Raw value.
| raw16| three 16-bit unsigned base‑10 integers | for decoding Raw value.
| raw48 | 48-bit unsigned base-10 integer | default for most attributes.
| hex48| 12 digit hexadecimal number | for decoding the Raw value.
| raw64 | 64-bit unsigned base-10 integer | includes two bytes from the normalized and worst attribute value. new raw format is used by some recent SSD devices.
| hex64 | 16 digit hexadecimal number | includes two bytes from
the normalized and worst attribute value
new raw format is used by some recent SSD devices.
| min2hour | Raw Attribute is power-on time in minutes | Its raw value will be displayed in the
form "Xh+Ym"
X is hours, and Y is minutes in the range 0-59 inclusive.
Y is always displayed with two digits, for example "06" or "31" or "00"
| sec2hour | Raw Attribute is power-on time in seconds | Its raw value will be displayed in the
form "Xh+Ym+Zs" X is hours, Y is minutes in the range 0-59 inclusive, and Z is seconds
in the range 0-59 inclusive
Y and Z are always displayed with two digits, for example "06" or "31" or "00"
| halfmin2hour| Raw Attribute is power-on time, measured in units of 30 seconds | format
is used by some Samsung disks. Its raw value will be in the form "Xh+Ym". Here X
is hours, and Y is minutes in the range 0-59 inclusive. Y is always two digits,
for example "06" or "31" or "00".
temperature is displayed if available
Default for Attributes 190 and 194.
| temp10x| Raw Attribute is ten times the disk temperature in Celsius.
| raw16(raw16)| raw attribute as a 16-bit value and two optional 16-bit values if
these words are nonzero. Default for Attributes 5 and 196.
| raw16(avg16)| Raw attribute is spin-up time. as a 16-bit value and an optional
"Average" 16-bit value if the word is nonzero. Default for Attribute 3.
| raw24/raw24Raw Attribute contains two 24-bit values
load cycles / unload cycles.
The difference is the number of unexpected power offs (emergency unload)
As a rule of thumb, the mechanical stress created by one emergency unload is equivalent
to that created by one hundred normal unloads.
| | | | | | | | | | | | | |
The following old arguments to -v are also still valid:
9,minutes| 9,min2hour,Power_On_Minutes.
| 9,seconds| 9,sec2hour,Power_On_Seconds.
| 9,halfminutes| 9,halfmin2hour,Power_On_Half_Minutes.
| 9,temp| 9,tempminmax,Temperature_Celsius.
| 192,emergencyretractcyclect| 192,raw48,Emerg_Retract_Cycle_Ct
| 193,loadunload| 193,raw24/raw24.
| 194,10xCelsius| 194,temp10x,Temperature_Celsius_x10.
| 194,unknown| 194,raw48,Unknown_Attribute.
| 197,increasing| 197,raw48,Total_Pending_Sectors. Also means that Attribute number
| 197 | (Current Pending Sector Count) is not reset if uncorrectable sectors are reallocated (see smartd.conf(5) man page).
| 198,increasing| 198,raw48,Total_Offl_Uncorrectabl. Also means that Attribute number
| 198 (| Offline Uncorrectable Sector Count) is not reset if uncorrectable sectors are reallocated (see smartd.conf(5) man page).
| 198,offlinescanuncsectorct| 198,raw48,Offline_Scan_UNC_SectCt.
| 200,writeerrorcount| 200,raw48,Write_Error_Count.
| 201,detectedtacount| 201,raw48,Detected_TA_Count.
| 220,temp| 220,raw48,Temperature_Celsius.
| | | | | | | | | | | | | | | | |
A table of hard drive models, listing which Attribute corresponds to temperature, can be
found at: www.guzu.net/linux/hddtemp.db
| -F TYPE
--firmwarebug=TYPE
[ATA only] Modifies the behavior of smartctl to compensate for some known and understood
device firmware or driver bug. Except swapid the arguments to this option are exclusive,
the final option given is used.
none Assume that the device firmware obeys the ATA specifications. This is the default,
unless the device has presets for -F in the device database (see below).
| samsung | In some Samsung disks (example: model SV4012H Firmware Version: RM100-08) some of
the two- and four-byte quantities in the SMART data structures are byte-swapped (relative to
the ATA specification). Enabling this option tells smartctl to evaluate these quantities in
byte-reversed order. Some signs that your disk needs this option are (1) no self-test log
displayed, even though you have run self-tests; (2) very large numbers of ATA errors reported in
the ATA error log; (3) strange and impossible values for the ATA error log timestamps.
| samsung2 | In more recent Samsung disks (firmware revisions ending in "-23") the number of ATA
errors reported is byte swapped. Enabling this option tells smartctl to evaluate this quantity in byte-reversed order. An indication that your Samsung disk needs this option is that
the self-test log is displayed correctly, but there are a very large number of errors in the
SMART error log. This is because the error count is byte swapped. Thus a disk with five
errors (0x0005) will appear to have 20480 errors (0x5000).
| samsung3 Some Samsung disks (at least SP2514N with Firmware VF100-37) report a self-test
still in progress with 0% remaining when the test was already completed. Enabling this option
modifies the output of the self-test execution status (see -c or -a )
| | | | |
an explicit F on the command line will over-ride any preset values for
F (see the P )
swapid - byte swapped ATA identify strings (device name, serial number, firmware version)
| | Run-Time Behavior
|
|---|
-n POWERMODE
--nocheck=POWERMODE
[ATA only] Specifies if smartctl should exit before performing any checks when the device is
in a low-power mode,
May prevent a spin-up by smartctl.
no check never i.e. always†, display the power mode if -i is specified.
no check if sleep.
no check if standby
In these modes most disks are not spinning, used this to prevent a disk from spinning up, .
no check if idle or SLEEP or STANDBY .
In the IDLE state, most disks are still spinning, so this is probably not what you want.
| -q TYPE
--quietmode=TYPE
run in one of the quiet modes:
errorsonly only display:
--log=error | if nonzero, the number of errors recorded in the SMART error log and the power-on time when they occurred
| --log=selftest | errors recorded in the device self-test log
| --health | SMART "disk failing" status or device Attributes (pre-failure or usage) which failed either now or in the past
| --all | device Attributes (pre-failure or usage) which failed either now or in the past.
|
| silent | No output. Use the exit status to determine results (see RETURN VALUES ).
| noserial| Do not display the serial number
| | |
|
-d dev
--device=dev |
valid arguments: ata, scsi, sat, marvell, 3ware,N, areca,N, usbcypress, usbjmicron, usbsunplus, cciss,N, hpt,L/M (or hpt,L/M/N), and test.
without -d smartctl determins the device type from the device
name or from controller type info provided by the operating system.
test smartctl displays the dev name, then opens the
device and displays the (possibly changed) dev name and exits.
sat for ATA disks that have a SCSI to ATA Translation (SAT) Layer (SATL)
between the disk and the operating system.
SAT defines two ATA PASS THROUGH SCSI commands,
one 12 bytes long and the other 16 bytes long that smartctl will utilize when this device type
is selected. The default is the 16 byte variant which can be overridden with either d sat,12 or d sat,16
usbcypress for ATA disks that are behind a Cypress usb-pata bridge. This
will use the ATACB proprietary scsi pass through command. There is no autodetection at the
moment. The best way to know if your device support it, is to check your device usb id (most
Cypress usb ata bridge got vid=0x04b4, pid=0x6830) or to try it (if the usb device doesn't
support ATACB, smartmontools display an error). The default scsi operation code is 0x24, but
although it can be overridden with -d usbcypress,0xn, where n is the scsi operation code,
you're running the risk of damage to the device or filesystems on it.
usbjmicron device type is for SATA disks that are
behind a JMicron USB to PATA/SATA bridge. The 48-bit ATA commands (required e.g. for --log=xerror,
see below do not work with all of these bridges and are therefore disabled by default.
These commands can be enabled by -d usbjmicron,x. CAUTION: Specifying ,x for a device
which do not support it results in I/O errors and may disconnect the drive. The port can be
specified by -d usbjmicron[,x],PORT where PORT is 0 (master) or 1 (slave). This is not necessary if only one disk is connected to the USB bridge. If two disks are connected, an error
message is displayed if no PORT is specified.[NEW EXPERIMENTAL SMARTCTL FEATURE]
usbsunplus device type is for SATA disks that are
behind a SunplusIT USB to SATA bridge.[NEW EXPERIMENTAL SMARTCTL FEATURE]
Under Linux, to look at SATA disks behind Marvell SATA controllers (using Marvell's 'linuxIAL'
driver rather than libata driver) use -d marvell Such controllers show up as Marvell Technology Group Ltd. SATA I or II controllers using lspci, or using lspci -n show a vendor ID
0x11ab and a device ID of either 0x5040, 0x5041, 0x5080, 0x5081, 0x6041 or 0x6081. The 'linuxIAL' driver seems not (yet?) available in the Linux kernel source tree,
but should be available from system vendors (ftp://ftp.aslab.com/ is known to provide a patch with the driver).
Under Linux , to look at SCSI/SAS disks behind LSI MegaRAID controllers, use syntax such as:
smartctl -a -d megaraid,2 /dev/sda
smartctl -a -d megaraid,0 /dev/sdb
where in the argument megaraid,N, the integer N is the physical disk number within the
MegaRAID controller. This interface will also work for Dell PERC controllers. The following
/dev/XXX entry must exist:
For PERC2/3/4 controllers: /dev/megadev0
For PERC5/6 controllers: /dev/megaraid_sas_ioctl_node
Under Linux and FreeBSD, to look at ATA disks behind 3ware SCSI RAID controllers, use syntax
such as:
smartctl -a -d 3ware,2 /dev/sda
smartctl -a -d 3ware,0 /dev/twe0
smartctl -a -d 3ware,1 /dev/twa0
where in the argument 3ware,N, the integer N is the disk number (3ware 'port') within the
3ware ATA RAID controller. The allowed values of N are from 0 to 127 inclusive. The first
two forms, which refer to devices /dev/sda-z and /dev/twe0-15, may be used with 3ware series
6000, 7000, and 8000 series controllers that use the 3x-xxxx driver.
The /dev/sda-z form is deprecated starting with the Linux 2.6 kernel series and may not be supported by the
Linux kernel in the near future. The final form, which refers to devices /dev/twa0-15, must be
used with 3ware 9000 series controllers, which use the 3w-9xxx driver.
If the special character device nodes /dev/twa? and /dev/twe? do not exist, or exist
with the incorrect major or minor numbers, smartctl will recreate them on the fly. Typically
/dev/twa0 refers to the first 9000-series controller, /dev/twa1 refers to the second 9000
series controller, and so on. Likewise /dev/twe0 refers to the first 6/7/8000-series controller, /dev/twa1 refers to the second 6/7/8000 series controller, and so on.
For the 6/7/8000 controllers, any of the physical disks can be queried or examined
using any of the 3ware's SCSI logical device /dev/sd? entries. Thus, if logical device
/dev/sda is made up of two physical disks (3ware ports zero and one) and logical device
/dev/sdb is made up of two other physical disks (3ware ports two and three) then you can examine the SMART data on any of the four physical disks using either SCSI device /dev/sda or
/dev/sdb. If you need to know which logical SCSI device a particular physical disk (3ware
port) is associated with, use the dmesg or SYSLOG output to show which SCSI ID corresponds to
a particular 3ware unit, and then use the 3ware CLI or 3dm tool to determine which ports
(physical disks) correspond to particular 3ware units.
If the value of N corresponds to a port that does not exist on the 3ware controller, or to a
port that does not physically have a disk attached to it, the behavior of smartctl depends
upon the specific controller model, firmware, Linux kernel and platform. In some cases you
will get a warning message that the device does not exist. In other cases you will be presented with 'void' data for a non-existent device.
If the /dev/sd? addressing form is used, then older 3w-xxxx drivers do not pass the
"Enable Autosave" ('-S on') and "Enable Automatic Offline" ('-o on') commands to the disk, and
produce these types of harmless syslog error messages instead: "3w-xxxx: tw_ioctl(): Passthru
size (123392) too big". This can be fixed by upgrading to version 1.02.00.037 or later of the
3w-xxxx driver, or by applying a patch to older versions. See http://smartmontools.source-
forge.net/ for instructions. Alternatively, use the character device /dev/twe0-15 interface.
The selective self-test functions (-t select,A-B) are only supported using the character
device interface /dev/twa0-15 and /dev/twe0-15. The necessary WRITE LOG commands can not be
passed through the SCSI interface.
Areca SATA RAID controllers are currently supported under Linux only. To look at SATA disks
behind Areca RAID controllers, use syntax such as:
smartctl -a -d areca,2 /dev/sg2
smartctl -a -d areca,3 /dev/sg3
where in the argument areca,N, the integer N is the disk number (Areca 'port') within the
Areca SATA RAID controller. The allowed values of N are from 1 to 24 inclusive. The first
line above addresses the second disk on the first Areca RAID controller. The second line
addresses the third disk on the second Areca RAID controller. To help identify the correct
device, use the command:
cat /proc/scsi/sg/device_hdr /proc/scsi/sg/devices
to show the SCSI generic devices (one per line, starting with /dev/sg0). The correct SCSI
generic devices to address for smartmontools are the ones with the type field equal to 3. If
the incorrect device is addressed, please read the warning/error messages carefully. They
should provide hints about what devices to use.
The Areca controller must have firmware version 1.46 or later. Lower-numbered
firmware versions will give (harmless) SCSI error messages and no SMART information.
To look at (S)ATA disks behind HighPoint RocketRAID controllers, use syntax such as:
smartctl -a -d hpt,1/3 /dev/sda (under Linux)
smartctl -a -d hpt,1/2/3 /dev/sda (under Linux)
smartctl -a -d hpt,1/3 /dev/hptrr (under FreeBSD)
smartctl -a -d hpt,1/2/3 /dev/hptrr (under FreeBSD)
where in the argument hpt,L/M or hpt,L/M/N, the integer L is the controller id, the integer M
is the channel number, and the integer N is the PMPort number if it is available. The allowed
values of L are from 1 to 4 inclusive, M are from 1 to 8 inclusive and N from 1 to 5 if PMPort
available. The /dev/sda-z form should be the device node which stands for the disks
derived from the HighPoint RocketRAID controllers under Linux and under FreeBSD, it is the
character device which the driver registered (eg, /dev/hptrr, /dev/hptmv6). And also these
values are limited by the model of the HighPoint RocketRAID controller.
HighPoint RocketRAID controllers are currently ONLY supported under Linux and FreeBSD.
cciss controllers are currently ONLY supported under Linux and FreeBSD.
| -T tol
--tolerance=tol
[ATA only] Specifies how tolerant smartctl should be of ATA and SMART command failures.
The behavior of smartctl depends upon whether the command is optional or mandatory".
mandatory : "required by the ATA/ATAPI-5 Specification if the device implements the SMART command set" and
optional "not required by the ATA/ATAPI-5 Specification even if
the device implements the SMART command set."
The "mandatory" ATA and SMART commands are: -
ATA IDENTIFY DEVICE,
- SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE,
- SMART ENABLE/DISABLE,
and
- SMART RETURN STATUS.
tol :
normal exit on failure of any mandatory SMART command, and ignore all failures of optional
SMART commands. This is the default. On some devices, issuing unimplemented
optional SMART commands doesn't cause an error.
This can result in misleading smartctl messages such as "Feature X not implemented", followed shortly by "Feature X: enabled".
In most such cases, contrary to the final message, Feature X is not enabled.
conservative exit on failure of optional SMART command.
permissive ignore failure(s) of mandatory SMART commands. This option may be given more
than once. Each additional use of this option will cause one more additional failure to be
ignored. The use of this option can lead to messages like "Feature X not implemented",
followed shortly by "Error: unable to enable Feature X". In a few such cases, contrary to the final message, Feature X is enabled.
verypermissive equivalent to giving a large number of -T permissive options: ignore failures of any number of mandatory SMART commands. see the above.
| -b action
--badsum=action
[ATA only] action smartctl if a checksum error is detected in the:
(1) Device Identity Structure
(2) SMART Self-Test Log Structure
(3) SMART Attribute Value Structure,
(4) SMART Attribute Threshold Structure, or
(5) ATA Error Log Structure.
warn report the incorrect checksum but carry on in spite of it, default.
ignore continue silently without issuing a warning.
exit
| -r ctl
--report=ctlctl
used by developers on non-conforming or poorly conforming hardware. reports details of smartctl
transactions with the device. The option can be used multiple times.
When used once, it shows a record of the ioctl() transactions with the device. When used more than once, the
detail of these ioctl() transactions are reported in greater detail.
sioctl - report all ioctl() transactions.
ataioctl - report only ioctl() transactions with ATA devices.
scsiioctl - report only ioctl() transactions with SCSI devices. Invoking this once shows the
SCSI commands in hex and the corresponding status. Invoking it a second time adds a hex listing
of the first 64 bytes of data send to, or received from the device.
Any argument may include a positive integer to specify the level of detail that should be
reported. The argument should be followed by a comma then the integer with no spaces. For
example, ataioctl,2 The default level is 1 so -r ataioctl,1 and -r ataioctl are equivalent.
For testing purposes, the output of -r ataioctl,2 can later be parsed by smartctl if
- is used as device path argument. The ATA command input parameters, sector data and return
values are reconstructed from the debug report read from stdin.
Then smartctl internally simulates an ATA device with the same behaviour. (not for SCSI devices yet).
| | SMART feature enable/disable commands:
if multiple options are used to both enable and disable a feature,
the enable will be issued before the disable .
|
|---|
-s on|off
--smart=on|off Enables or Disables SMART.
The command --smart on (perhaps used with with the o on and S on options) should be
placed in a start-up script, for example in rc.local or rc.sysinit.
The SMART feature settings are preserved over power-cycling.
For the TapeAlert messages it is not necessary (or useful) to enable SMART .
| -o on|off
--offlineauto=on|off
Enables|Disables automatic offline test, which scans the drive every four hours for disk defects.
This can be issued during normal system operation. [ATA only]
Althought listed as "Obsolete" in
the ATA and ATA/ATAPI Specifications it was originally part of the SFF-8035i Revision 2.0
specification, but was never part of any ATA specification.
It is implemented by many vendors. [See documentation in IBM's Official Published Disk Specifications. For example the IBM Travelstar 40GNX Hard Disk Drive Specifications (Revision 1.1,
22 April 2002, Publication # 1541, Document S07N-7715-02) page 164. or
SFF-8035i Specification -- see REFERENCES below.]
To determine if automatic offline testing is supported refer to the 'Auto Offline Data Collection'
part of the SMART capabilities report (displayed with -c after issuing --offlineauto=on
| SMART provides several categories of "testing".
- online "testing", has no effect on the performance. To enabled
smartctl -s on /dev/hda .
- offline "testing",has no effect on the performance. To enabled
smartctl -o on /dev/hda .
causes testing to be carried out, on a regular scheduled basis. The disk will suspend
offline testing while O/S initiated disk accesses are taking place, and resume testing when
the disk would otherwise be idle.
A offline test can be initiated by using smartctl -t offline /dev/hda
online and offline testing should be described as online and offline "data collection".
The results are reflected in the values of the SMART Attributes.
Problems or errors are detected when the value of an Attribute go below its failure threshold.
Some of errors are recorded in the error log and are displayed with -A and --log=error .
Some attribute are updated only during offline data collection activities;
others are updated during normal operation (ALWAYS)
as shown in the attribute table display.
-
-t and -X carry out and abort self-tests
in the category for where 'testing' is really an
appropriate choice is "self" testing is performed when a command is issued.
Any errors detected in the self testing will be shown in the SMART self-test log, examined using --log=selftest.
in this manual page, the word "Test" is used in connection with the second category just
described, e.g. for the "offline" testing.
"Self-test" are used in connection with the third category.
-S on|off
--saveauto=on|off
Enables or disables SMART autosave of vendor-specific Attributes, and is preserved across power cycles,
For SCSI devices this toggles the value of the Global Logging Target Save Disabled (GLTSD) bit
in the Control Mode Page. Some disk manufacturers set this bit by default. This prevents error
counters, power-up hours and other useful data from being placed in non-volatile storage, so
these values may be reset to zero the next time the device is power-cycled. If the GLTSD bit
is set then 'smartctl -a' will issue a warning. Use on to clear the GLTSD bit and thus enable
saving counters to non-volatile storage.
For extreme streaming-video type applications consider using off to set the GLTSD bit.
| -P TYPE
--presets=TYPE
[ATA only] Specifies whether smartctl should use any preset options that are available for
this drive. By default, if the drive is recognized in the smartmontools database, then the presets are used.
smartctl automatically sets appropriate options for known drives. For example, the Maxtor
4D080H4 uses Attribute 9 to stores power-on time in minutes whereas most drives use that
Attribute to store the power-on time in hours. The command-line option -v 9,minutes ensures
that smartctl correctly interprets Attribute 9 in this case, but that option is preset for the
Maxtor 4D080H4 and so need not be specified by the user on the smartctl command line.
The argument show will show any preset options for your drive and the argument showall will
show all known drives in the smartmontools database, along with their preset options. If
there are no presets for your drive and you think there should be (for example, a -v or -F
option is needed to get smartctl to display correct values) then please contact the smartmontools
developers so that this information can be added to the smartmontools database. Contact
information is at the end of this man page.
| use if a drive is recognized, then use the stored presets for it. This is the default.
that presets will NOT over-ride additional Attribute interpretation ('-v N,something') command-line options or explicit -F' command-line options..
ignore | do not use presets.
| show | show if the drive is recognized in the database, and if so, its presets, then exit.
| showall | list all recognized drives, and the presets that are set for them, then exit.
| | | |
The -P showall' option takes up to two optional arguments to match a specific drive type and
firmware version. The command:
smartctl -P showall
lists all entries, the command:
smartctl -P showall 'MODEL'
lists all entries matching MODEL, and the command:
smartctl -P showall 'MODEL' 'FIRMWARE'
lists all entries for this MODEL and a specific FIRMWARE version.
| -B [+]FILE
--drivedb=[+]FILE
[ATA only] [NEW EXPERIMENTAL SMARTCTL FEATURE] Read the drive database from FILE. The new
database replaces the built in database by default. If '+' is specified, then the new entries prepend the built in entries.
If this option is not specified, optional entries are read from the file
/usr/local/etc/smart_drivedb.h (Windows: ./smart_drivedb.conf).
The database files use the same C/C++ syntax that is used to initialize the built in database
array. C/C++ style comments are allowed. Example:
/* Full entry: */
{
"Model family", // Info about model family/series.
"MODEL1.*REGEX", // Regular expression to match model of device.
"VERSION.*REGEX", // Regular expression to match firmware version(s).
"Some warning", // Warning message.
"-v 9,minutes" // String of preset -v and -F options.
},
/* Minimal entry: */
{
"", // No model family/series info.
"MODEL2.*REGEX", // Regular expression to match model of device.
"", // All firmware versions.
"", // No warning.
"" // No options preset.
},
/* ... */
| | Run/Abort offline test and self-test options:
|
|---|
-t test
--test=test
-C used with -t runs in captive
mode (known as "foreground mode" for SCSI devices).
Only one test type can be run at a time
If shutdown or power cycled during a self-test, no harm should result
and the self-test may resume.
-t offline
Used during normal system operation, updates the SMART Attribute values, and if errors are found they
will appear in the SMART error log, dispayed with --log=error.
[for SCSI devices runs the default self test in foreground. No entry is placed in the self test log.]
If -c shows "Suspend Offline collection upon new command", track the progress of the test using -c .
If -c show "Abort Offline collection upon new command" then most commands will abort the Immediate Offline Test, do not track the progress of the test.
| -t short (usually under ten minutes).
Can be given during normal system operation .
This is a test in a different category than the immediate or automatic offline tests,
as it checks the electrical and mechanical performance as well as the read performance.
Results are reported in the Self Test Error Log, displayed with --log=selftest .
On some disks the progress of the self-test can be monitored by
watching this log during the self-test; with other disks use the -c option to monitor progress.
| -t long Extended Self Test (tens of minutes).
Can be given during normal system operation .
| -t conveyance [ATA only] runs a Conveyance Self Test (minutes)
intended to identify damage incurred during transporting of the device.
Can be given during normal system operation
selective tests
-t select,N-M, select,N+SIZE [ATA only] runs a SMART Selective Self Test, to test a range of
disk Logical Block Addresses (LBAs), rather than the entire disk.
Each range of LBAs that is checked is called a "span" and is specified by a starting LBA (N) and an ending LBA (M) with N
less than or equal to M. The range can also be specified as N+SIZE. A span at the end of a
disk can be specified by N‑max.
For example: smartctl -t select,10-20 /dev/hda
smartctl -t select,10+11 /dev/hda
both run a self test on one span consisting of LBAs ten through twenty
smartctl -t select,100000000-max /dev/hda
Run a self test from LBA 100000000 up to the end of the disk.
-t can be given up to five times.
Example : smartctl -t select,0-100 -t select,1000-2000 /dev/hda
runs a self test on two spans. The first span consists of 101 LBAs and the second span consists of 1001 LBAs.
The spans can overlap
for example:
smartctl -t select,0-10 -t select,5-15 -t select,10-20 /dev/hda
The results of the are be obtained (both during and after the test) by
using -l selftest.
Selective self-tests are helpful if (based on
SYSLOG error messages, previous failed self-tests, or SMART error log entries) you suspect
that a disk is having problems at a particular range of Logical Block Addresses (LBAs).
Can be run during normal system operation.
The kernel must be compiled with CONFIG_IDE_TASKFILE_IO.
The variants of the selective self-test command use spans based on the ranges from
past tests stored on the disk:
| -t select,redo[+SIZE] [ATA only] redo the last Test using the same LBA
range. The starting LBA is the same as the last test.
The ending LBA will be different if a span size is specified by +SIZE.
For example the commands:
smartctl -t select,10-20 /dev/hda
smartctl -t select,redo /dev/hda
smartctl -t select,redo+20 /dev/hda
have the same effect as:smartctl -t select,10-20 /dev/hda
smartctl -t select,10-20 /dev/hda
smartctl -t select,10-29 /dev/hda
| -t select,next[+SIZE] - [ATA only] runs a SMART Selective Self Test on the LBA range which follows the range of the last test. The starting LBA is set to (ending LBA +1) of the last test.
A new span size may be specified by the optional +SIZE argument.
For example the commands:
smartctl -t select,0-999 /dev/hda
smartctl -t select,next /dev/hda
smartctl -t select,next+2000 /dev/hda
have the same effect as:
smartctl -t select,0-999 /dev/hda
smartctl -t select,1000-1999 /dev/hda
smartctl -t select,2000-3999 /dev/hda
If the last test ended at the last LBA of the disk, the new range starts at LBA 0. The span
size of the last span of a disk is adjusted such that the total number of spans to check the
full disk will not be changed by future uses of -t select,next'.
-t select,cont[+SIZE] [ATA only] performs a 'redo' (above) if the self test status
reports that the last test was aborted by the host. Otherwise it run the 'next' (above) test.
| -t afterselect,on [ATA only] perform an offline read scan after a Selective Self-test has completed. This option must be used together with one or more of the select,N-M options above. If
the LBAs that have been specified in the Selective self-test pass the test with no errors
found, then read scan the remainder of the disk. If the device is powered-cycled while this
read scan is in progress, the read scan will be automatically resumed after a time specified
by the pending timer (see below). The value of this option is preserved between selective
self-tests.
| -t afterselect,off [ATA only] do not read scan the remainder of the disk after
a Selective self-test has completed.
This option must be use together with one or more of the select,N-M
options above. The value of this option is preserved between selective self-tests.
| -t pending,N [ATA only] set the pending offline read scan timer to N minutes.
N is an integer in the range from 0 to 65535 .
If the device is powered off during a read scan after a Selective self-test,
then resume the test automatically N minutes after power-up.
This option must be use together with one or more of the select,N-M options above.
The value of this option is preserved between selective self-tests.
| | |
| |
| -t scttempint,N[,p] [ATA only] set the time interval for SCT temperature logging to N minutes.
With p the setting is preserved across power cycles. Otherwise,
it will revert to last non-volatile setting by the next hard reset.
This clears the temperature history table. See --log=scttemp
|
| -C
--captive
Runs self-tests in captive mode. This has no effect with -t offline or if the -t option is not used. [for SCSI devices, this command option runs the self-test in
"Foreground" mode.]
WARNING: Tests run in captive mode may busy out the drive for the length of the test. Only
run captive tests on drives without any mounted partitions!
| -X
--abort
Aborts non-captive SMART Self Tests. this command will abort the Offline Immediate
Test routine only if your disk has the "Abort Offline collection upon new command" capability.
| -h
--help
--usage displays a usage message to STDOUT and exits.
slightly modified to reduce screen size (ed)
smartctl 5.39.1 2010-01-28 r3054 [x86_64-apple-darwin10.4.0] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net
Usage: smartctl [options] device
========== SHOW INFORMATION OPTIONS =====
-h, --help, --usage Display this help and exit
-V, --version, --copyright, --license display license, copyright, and version info and exit
-i, --info Show identity information for device
-a, --all Show all SMART information for device (see -x)
-x, --xall Show all information for device
==========SMARTCTL RUN-TIME BEHAVIOR OPTIONS =====
-q TYPE, --quietmode=TYPE ATA Set smartctl quiet mode to one of: errorsonly, silent, noserial
-d TYPE, --device=TYPE Specify device type to one of: ata, scsi, sat[,N][+TYPE],
usbcypress[,X], usbjmicron[,x][,N], usbsunplus, marvell, areca,N,
3ware,N,hpt,L/M/N, cciss,N, test
-T TYPE, --tolerance=TYPE ATA Tolerance: normal, conservative, permissive, verypermissive
-b TYPE, --badsum=TYPE ATA Set action on bad checksum to one of: warn, exit, ignore
-r TYPE, --report=TYPE Report transactions
-n MODE, --nocheck=MODE ATA No check if: never, sleep, standby, idle
========= DEVICE FEATURE ENABLE/DISABLE COMMANDS =====
-s VALUE, --smart=VALUE Enable/disable SMART on device (on/off)
-o VALUE, --offlineauto=VALUE ATA Enable/disable automatic offline testing on device (on/off)
-S VALUE, --saveauto=VALUE ATA Enable/disable Attribute autosave on device (on/off)
========= READ AND DISPLAY DATA OPTIONS =====
-H, --health Show device SMART health status
-c, --capabilities ATA Show device SMART capabilities
-A, --attributes Show device SMART vendor-specific Attributes and values
-l TYPE, --log=TYPE Show device log. TYPE: error, selftest, selective, directory[,g|s],
background, sasphy[,reset], sataphy[,reset], scttemp[sts,hist],
gplog,N[,RANGE], smartlog,N[,RANGE], xerror[,N][,error],
xselftest[,N][,selftest]
-v N,OPTION , --vendorattribute=N,OPTION ATA
Set display OPTION for vendor Attribute N
-F TYPE, --firmwarebug=TYPE ATA Use firmware bug workaround: none, samsung [23], , swapid
-P TYPE, --presets=TYPE ATA Drive-specific presets: use, ignore, show, showall
-B [+]FILE, --drivedb=[+]FILE ATA Read and replace [add] drive database from FILE
========= DEVICE SELF-TEST OPTIONS ===== -t TEST, --test=TEST
TEST: offline short long conveyance select,M-N pending,N afterselect,[on|off] scttempint,N[,p]
-C, --captive Do test in captive mode (along with -t)
-X, --abort Abort any non-captive test on device
=========== SMARTCTL EXAMPLES =====
smartctl -a disk0 (displays all SMART information) [[ see -x ]]
smartctl -t long /dev/disk0 (Executes extended disk self-test)
smartctl --smart=on --saveauto=on /dev/rdisk0 (Enables SMART on first disk)
(display Self-Test & Attribute errors)
smartctl --attributes --log=selftest --quietmode=errorsonly /dev/disk0
(You can use IOService: ...)
smartctl -a IOService:/MacRISC2PE/pci@f4000000/AppleMacRiscPCI/ata-6@D/AppleKauaiATA/ continuing…
ATADeviceNub@0/IOATABlockStorageDriver/IOATABlockStorageDevice
(... Or IODeviceTree:)
smartctl -c IODeviceTree:/pci@f4000000/ata-6@D/@0:0
| -V
--version
--copyright
--license
displays version, copyright, license, home page and SVN revision information for your copy of
smartctl to STDOUT and then exits. include this when reporting bugs or problems.
| | | | | | | | | | | | | | | | | | | | | | | | | |