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SMARTD.CONF(5)			  2013-07-26			SMARTD.CONF(5)

NAME
       smartd.conf - SMART Disk Monitoring Daemon Configuration File

FULL PATH
       /etc/smartd.conf

PACKAGE VERSION
       smartmontools-6.2 2013-07-26 r3841

DESCRIPTION
       [This man page is generated for the Linux version of smartmontools.  It
       does not contain info specific to other platforms.]

       /etc/smartd.conf is the configuration file for the smartd daemon.

       If the configuration file /etc/smartd.conf is present, smartd reads  it
       at  startup,  before  fork(2)ing	 into the background. If smartd subse‐
       quently receives a HUP signal, it will then re-read  the	 configuration
       file.  If smartd is running in debug mode, then an INT signal will also
       make it re-read the configuration file. This signal can be generated by
       typing <CONTROL-C> in the terminal window where smartd is running.

       In  the	absence	 of  a	configuration file smartd will try to open all
       available devices (see smartd(8) man page).  A configuration file  with
       a single line ´DEVICESCAN -a' would have the same effect.

       This  can  be  annoying if you have an ATA or SCSI device that hangs or
       misbehaves when receiving SMART commands.  Even if this causes no prob‐
       lems,  you  may	be  annoyed  by the string of error log messages about
       devices that can´t be opened.

       One can avoid this problem, and gain more control  over	the  types  of
       events	monitored   by	 smartd,   by  using  the  configuration  file
       /etc/smartd.conf.  This file contains a list  of	 devices  to  monitor,
       with  one device per line.  An example file is included with the smart‐
       montools distribution. You will find this sample configuration file  in
       /usr/share/doc/smartmontools/.  For  security,  the  configuration file
       should not be writable by anyone but root. The syntax of the file is as
       follows:

       ·   There  should  be one device listed per line, although you may have
	   lines that are entirely comments or white space.

       ·   Any text following a hash sign ´#´ and up to the end of the line is
	   taken to be a comment, and ignored.

       ·   Lines  may  be  continued by using a backslash ´\´ as the last non-
	   whitespace or non-comment item on a line.

       ·   Note: a line whose first character is a hash sign ´#´ is treated as
	   a  white-space blank line, not as a non-existent line, and will end
	   a continuation line.

       Here is an example configuration file.  It´s for illustrative  purposes
       only;  please don´t copy it onto your system without reading to the end
       of the DIRECTIVES Section below!

       ################################################
       # This is an example smartd startup config file
       # /etc/smartd.conf for monitoring three
       # ATA disks, three SCSI disks, six ATA disks
       # behind two 3ware controllers, three SATA disks
       # directly connected to the HighPoint Rocket-
       # RAID controller, two SATA disks connected to
       # the HighPoint RocketRAID controller via a pmport
       # device, four SATA disks connected to an Areca
       # RAID controller, and one SATA disk.
       #
       # First ATA disk on two different interfaces. On
       # the second disk, start a long self-test every
       # Sunday between 3 and 4 am.
       #
	 /dev/hda -a -m admin@example.com,root@localhost
	 /dev/hdc -a -I 194 -I 5 -i 12 -s L/../../7/03
       #
       # SCSI disks. Send a TEST warning email to admin on
       # startup.
       #
	 /dev/sda
	 /dev/sdb -m admin@example.com -M test
       #
       # Strange device. It´s SCSI. Start a scheduled
       # long self test between 5 and 6 am Monday/Thursday
	 /dev/weird -d scsi -s L/../../(1|4)/05
       #
       # An ATA disk may appear as a SCSI device to the
       # OS. If a SCSI to ATA Translation (SAT) layer
       # is between the OS and the device then this can be
       # flagged with the '-d sat' option. This situation
       # may become common with SATA disks in SAS and FC
       # environments.
	 /dev/sda -a -d sat
       #
       # Three disks connected to a MegaRAID controller
       # Start short self-tests daily between 1-2, 2-3, and
       # 3-4 am.
	 /dev/sda -d megaraid,0 -a -s S/../.././01
	 /dev/sda -d megaraid,1 -a -s S/../.././02
	 /dev/sda -d megaraid,2 -a -s S/../.././03
	 /dev/bus/0 -d megaraid,2 -a -s S/../.././03
       #
       # Four ATA disks on a 3ware 6/7/8000 controller.
       # Start short self-tests daily between midnight and 1am,
       # 1-2, 2-3, and 3-4 am. Starting with the Linux 2.6
       # kernel series, /dev/sdX is deprecated in favor of
       # /dev/tweN. For example replace /dev/sdc by /dev/twe0
       # and /dev/sdd by /dev/twe1.
	 /dev/sdc -d 3ware,0 -a -s S/../.././00
	 /dev/sdc -d 3ware,1 -a -s S/../.././01
	 /dev/sdd -d 3ware,2 -a -s S/../.././02
	 /dev/sdd -d 3ware,3 -a -s S/../.././03
       #
       # Two ATA disks on a 3ware 9000 controller.
       # Start long self-tests Sundays between midnight and
       # 1am and 2-3 am
	 /dev/twa0 -d 3ware,0 -a -s L/../../7/00
	 /dev/twa0 -d 3ware,1 -a -s L/../../7/02
       #
       # Two SATA (not SAS) disks on a 3ware 9750 controller.
       # Start long self-tests Sundays between midnight and
       # 1am and 2-3 am
	 /dev/twl0 -d 3ware,0 -a -s L/../../7/00
	 /dev/twl0 -d 3ware,1 -a -s L/../../7/02
       #
       # Three SATA disks on a HighPoint RocketRAID controller.
       # Start short self-tests daily between 1-2, 2-3, and
       # 3-4 am.
       # under Linux
	 /dev/sde -d hpt,1/1 -a -s S/../.././01
	 /dev/sde -d hpt,1/2 -a -s S/../.././02
	 /dev/sde -d hpt,1/3 -a -s S/../.././03
       #
       # Two SATA disks connected to a HighPoint RocketRAID
       # via a pmport device. Start long self-tests Sundays
       # between midnight and 1am and 2-3 am.
       # under Linux
	 /dev/sde -d hpt,1/4/1 -a -s L/../../7/00
	 /dev/sde -d hpt,1/4/2 -a -s L/../../7/02
       # Three SATA disks connected to an Areca
       # RAID controller. Start long self-tests Sundays
       # between midnight and 3 am.
	 /dev/sg2 -d areca,1 -a -s L/../../7/00
	 /dev/sg2 -d areca,2 -a -s L/../../7/01
	 /dev/sg2 -d areca,3 -a -s L/../../7/02
       #
       # The following line enables monitoring of the
       # ATA Error Log and the Self-Test Error Log.
       # It also tracks changes in both Prefailure
       # and Usage Attributes, apart from Attributes
       # 9, 194, and 231, and shows continued lines:
       #
	 /dev/hdd -l error \
		  -l selftest \
		  -t \	    # Attributes not tracked:
		  -I 194 \  # temperature
		  -I 231 \  # also temperature
		  -I 9	    # power-on hours
       #
       ################################################

CONFIGURATION FILE DIRECTIVES
       If a non-comment entry in the configuration file	 is  the  text	string
       DEVICESCAN  in  capital	letters, then smartd will ignore any remaining
       lines in the configuration file, and will scan for devices.  DEVICESCAN
       may optionally be followed by Directives that will apply to all devices
       that are found in the scan.  Please see below for additional details.

       [NEW EXPERIMENTAL SMARTD FEATURE] If an entry in the configuration file
       starts  with  DEFAULT  instead of a device name, then all directives in
       this entry are set as defaults for the next device entries.

       This configuration:

	 DEFAULT -a -R5! -W 2,40,45 -I 194 -s L/../../7/00 -m admin@example.com
	 /dev/sda
	 /dev/sdb
	 /dev/sdc
	 DEFAULT -H -m admin@example.com
	 /dev/sdd
	 /dev/sde -d removable

       has the same effect as:

	 /dev/sda -a -R5! -W 2,40,45 -I 194 -s L/../../7/00 -m admin@example.com
	 /dev/sdb -a -R5! -W 2,40,45 -I 194 -s L/../../7/00 -m admin@example.com
	 /dev/sdc -a -R5! -W 2,40,45 -I 194 -s L/../../7/00 -m admin@example.com
	 /dev/sdd -H -m admin@example.com
	 /dev/sde -d removable -H -m admin@example.com

       The following are the Directives that may appear following  the	device
       name  or DEVICESCAN or DEFAULT on any line of the /etc/smartd.conf con‐
       figuration file. Note that  these  are  NOT  command-line  options  for
       smartd.	 The  Directives  below may appear in any order, following the
       device name.

       For an ATA device, if no Directives appear, then	 the  device  will  be
       monitored  as  if the ´-a´ Directive (monitor all SMART properties) had
       been given.

       If a SCSI disk is listed, it will be monitored at  the  maximum	imple‐
       mented  level: roughly equivalent to using the ´-H -l selftest´ options
       for an ATA disk.	 So with the exception of ´-d´, ´-m´,  ´-l  selftest´,
       ´-s´,  and  ´-M´, the Directives below are ignored for SCSI disks.  For
       SCSI disks, the ´-m´ Directive sends a warning email if the SMART  sta‐
       tus indicates a disk failure or problem, if the SCSI inquiry about disk
       status fails, or if new errors appear in the self-test log.

       If a 3ware controller is used then the corresponding SCSI (/dev/sd?) or
       character device (/dev/twe?, /dev/twa?, /dev/twl? or /dev/tws?) must be
       listed, along with the ´-d 3ware,N´ Directive (see below).   The	 indi‐
       vidual  ATA  disks  hosted  by the 3ware controller appear to smartd as
       normal ATA devices.  Hence all the ATA directives can be used for these
       disks (but see note below).

       If  an  Areca  controller  is  used then the corresponding device (SCSI
       /dev/sg? on Linux or /dev/arcmsr0 on FreeBSD)  must  be	listed,	 along
       with the ´-d areca,N´ Directive (see below).  The individual SATA disks
       hosted by the Areca controller appear to smartd as normal ATA  devices.
       Hence  all  the	ATA  directives	 can  be  used for these disks.	 Areca
       firmware version 1.46 or later which  supports  smartmontools  must  be
       used; Please see the smartctl(8) man page for further details.

       -d TYPE
	      Specifies	 the  type of the device.  The valid arguments to this
	      directive are:

	      auto - attempt to guess the device type from the device name  or
	      from  controller	type  info provided by the operating system or
	      from a matching USB ID entry in the drive database.  This is the
	      default.

	      ata - the device type is ATA.  This prevents smartd from issuing
	      SCSI commands to an ATA device.

	      scsi - the device type is SCSI.  This prevents smartd from issu‐
	      ing ATA commands to a SCSI device.

	      sat[,auto][,N]  -	 the  device  type  is SCSI to ATA Translation
	      (SAT).  This is for ATA disks that have a SCSI to	 ATA  Transla‐
	      tion  (SAT) Layer (SATL) between the disk and the operating sys‐
	      tem.  SAT defines two ATA PASS THROUGH  SCSI  commands,  one  12
	      bytes  long  and the other 16 bytes long.	 The default is the 16
	      byte variant which can be overridden with either ´-d sat,12´  or
	      ´-d sat,16´.

	      If  ´-d  sat,auto´  is  specified, device type SAT (for ATA/SATA
	      disks) is only used if the SCSI  INQUIRY	data  reports  a  SATL
	      (VENDOR:	"ATA	 ").  Otherwise device type SCSI (for SCSI/SAS
	      disks) is used.

	      usbcypress - this device type is for ATA disks that are behind a
	      Cypress USB to PATA bridge.  This will use the ATACB proprietary
	      scsi pass through command.  The default SCSI operation  code  is
	      0x24,  but  although  it	can  be	 overridden  with  ´-d	usbcy‐
	      press,0xN´, where N is the scsi operation code,  you're  running
	      the risk of damage to the device or filesystems on it.

	      usbjmicron[,p][,x][,PORT]	 -  this 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 ´-l 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´.
	      If two disks are connected to a bridge with two ports, an	 error
	      message  is  printed  if	no PORT is specified.  The port can be
	      specified by ´-d usbjmicron[,x],PORT´ where PORT is  0  (master)
	      or  1  (slave).  This is not necessary if the device uses a port
	      multiplier to connect multiple disks to  one  port.   The	 disks
	      appear  under separate /dev/ice names then.  CAUTION: Specifying
	      ´,x´ for a device which does  not	 support  it  results  in  I/O
	      errors  and  may	disconnect the drive.  The same applies if the
	      specified PORT does not exist or is not connected to a disk.

	      [NEW EXPERIMENTAL SMARTD FEATURE] The Prolific  PL2507/3507  USB
	      bridges with older firmware support a pass-through command simi‐
	      lar to JMicron and work with ´-d usbjmicron,0´.  Newer  Prolific
	      firmware	requires  a  modified command which can be selected by
	      ´-d usbjmicron,p´.  Note that this  does	not  yet  support  the
	      SMART status command.

	      usbsunplus  - this device type is for SATA disks that are behind
	      a SunplusIT USB to SATA bridge.

	      marvell - [Linux only] interact with SATA disks  behind  Marvell
	      chip-set	controllers  (using  the  Marvell  rather  than libata
	      driver).

	      megaraid,N - [Linux only] the device consists  of	 one  or  more
	      SCSI/SAS disks connected to a MegaRAID controller.  The non-neg‐
	      ative integer N (in the range of 0  to  127  inclusive)  denotes
	      which  disk on the controller is monitored.  This interface will
	      also work for Dell PERC controllers.  In	log  files  and	 email
	      messages	this disk will be identified as megaraid_disk_XXX with
	      XXX in the range from 000 to 127 inclusive.  It is  possible  to
	      set  RAID	 device name as /dev/bus/N, where N is a SCSI bus num‐
	      ber.  Please see the smartctl(8) man page for further details.

	      3ware,N - [FreeBSD and Linux only] the device consists of one or
	      more  ATA	 disks connected to a 3ware RAID controller.  The non-
	      negative integer N (in  the  range  from	0  to  127  inclusive)
	      denotes which disk on the controller is monitored.  In log files
	      and  email  messages   this   disk   will	  be   identified   as
	      3ware_disk_XXX with XXX in the range from 000 to 127 inclusive.

	      Note  that  while	 you  may  use	any  of the 3ware SCSI logical
	      devices /dev/tw* to address any of  the  physical	 disks	(3ware
	      ports),  error  and log messages will make the most sense if you
	      always list the 3ware SCSI logical device corresponding  to  the
	      particular  physical disks.  Please see the smartctl(8) man page
	      for further details.

	      areca,N - [FreeBSD, Linux, Windows and Cygwin only]  the	device
	      consists	of  one	 or more SATA disks connected to an Areca SATA
	      RAID controller.	The positive integer N (in the range from 1 to
	      24 inclusive) denotes which disk on the controller is monitored.
	      In log files and email messages this disk will be	 identifed  as
	      areca_disk_XX  with  XX  in  the	range from 01 to 24 inclusive.
	      Please see the smartctl(8) man page for further details.

	      areca,N/E - [FreeBSD,  Linux,  Windows  and  Cygwin  only]  [NEW
	      EXPERIMENTAL  SMARTD FEATURE] the device consists of one or more
	      SATA or SAS disks connected to an	 Areca	SAS  RAID  controller.
	      The  integer N (range 1 to 128) denotes the channel (slot) and E
	      (range 1 to 8) denotes the enclosure.  Important: This  requires
	      Areca SAS controller firmware version 1.51 or later.

	      cciss,N - [FreeBSD and Linux only] the device consists of one or
	      more SCSI/SAS or SATA disks  connected  to  a  cciss  RAID  con‐
	      troller.	 The non-negative integer N (in the range from 0 to 15
	      inclusive) denotes which disk on the  controller	is  monitored.
	      In  log files and email messages this disk will be identified as
	      cciss_disk_XX with XX in the range  from	00  to	15  inclusive.
	      Please see the smartctl(8) man page for further details.

	      hpt,L/M/N	 - [FreeBSD and Linux only] the device consists of one
	      or more ATA disks	 connected  to	a  HighPoint  RocketRAID  con‐
	      troller.	 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 inclu‐
	      sive, M are from 1 to 128 inclusive and N from 1 to 4 if	PMPort
	      available.   And	also  these values are limited by the model of
	      the HighPoint RocketRAID controller.  In	log  files  and	 email
	      messages	this disk will be identified as hpt_X/X/X and X/X/X is
	      the same as L/M/N, note if no N indicated, N set to the  default
	      value  1.	  Please  see  the  smartctl(8)	 man  page for further
	      details.

	      ignore - [NEW EXPERIMENTAL SMARTD FEATURE] the device  specified
	      by  this	configuration entry should be ignored.	This allows to
	      ignore specific  devices	which  are  detected  by  a  following
	      DEVICESCAN configuration line.  It may also be used to temporary
	      disable longer multi-line configuration entries.	This Directive
	      may be used in conjunction with the other ´-d´ Directives.

	      removable	 -  the	 device or its media is removable.  This indi‐
	      cates to smartd that it should  continue	(instead  of  exiting,
	      which  is the default behavior) if the device does not appear to
	      be present when smartd is started.  This Directive may  be  used
	      in conjunction with the other ´-d´ Directives.

       -n POWERMODE[,N][,q]
	      [ATA  only]  This	 ´nocheck´ Directive is used to prevent a disk
	      from being spun-up when it is periodically polled by smartd.

	      ATA disks have five different power states. In order of increas‐
	      ing  power  consumption  they  are:  ´OFF´,  ´SLEEP´, ´STANDBY´,
	      ´IDLE´, and ´ACTIVE´.  Typically in the OFF, SLEEP, and  STANDBY
	      modes  the  disk´s  platters  are	 not spinning. But usually, in
	      response to SMART commands issued by smartd, the	disk  platters
	      are  spun	 up.  So if this option is not used, then a disk which
	      is in a low-power mode may be spun up and	 put  into  a  higher-
	      power mode when it is periodically polled by smartd.

	      Note  that  if the disk is in SLEEP mode when smartd is started,
	      then it won't respond to smartd commands, and so the disk	 won't
	      be registered as a device for smartd to monitor. If a disk is in
	      any other low-power mode, then the commands issued by smartd  to
	      register the disk will probably cause it to spin-up.

	      The  ´-n´	 (nocheck)  Directive  specifies  if smartd´s periodic
	      checks should still be carried out when the device is in a  low-
	      power mode.  It may be used to prevent a disk from being spun-up
	      by periodic smartd polling.  The	allowed	 values	 of  POWERMODE
	      are:

	      never  -	smartd	will poll (check) the device regardless of its
	      power mode. This may cause a disk which is spun-down to be spun-
	      up  when	smartd checks it.  This is the default behavior if the
	      '-n' Directive is not given.

	      sleep - check the device unless it is in SLEEP mode.

	      standby - check the device unless it  is	in  SLEEP  or  STANDBY
	      mode.   In  these	 modes	most disks are not spinning, so if you
	      want to prevent a laptop disk from spinning up  each  time  that
	      smartd polls, this is probably what you want.

	      idle  -  check the device unless it is in SLEEP, STANDBY or IDLE
	      mode.  In the IDLE state, most disks are still spinning, so this
	      is probably not what you want.

	      Maximum  number of skipped checks (in a row) can be specified by
	      appending	 positive  number  ´,N´	  to   POWERMODE   (like   ´-n
	      standby,15´).  After N checks are skipped in a row, powermode is
	      ignored and the check is performed anyway.

	      When a periodic test  is	skipped,  smartd  normally  writes  an
	      informal log message. The message can be suppressed by appending
	      the option ´,q´ to POWERMODE (like ´-n standby,q´).   This  pre‐
	      vents a laptop disk from spinning up due to this message.

	      Both ´,N´ and ´,q´ can be specified together.

       -T TYPE
	      Specifies	 how  tolerant smartd should be of SMART command fail‐
	      ures.  The valid arguments to this Directive are:

	      normal - do not try to monitor the disk  if  a  mandatory	 SMART
	      command  fails, but continue if an optional SMART command fails.
	      This is the default.

	      permissive - try to monitor the disk even if it appears to  lack
	      SMART  capabilities.   This  may	be required for some old disks
	      (prior to ATA-3 revision 4) that implemented  SMART  before  the
	      SMART  standards were incorporated into the ATA/ATAPI Specifica‐
	      tions.  [Please see the smartctl -T command-line option.]

       -o VALUE
	      [ATA only] Enables or disables SMART Automatic  Offline  Testing
	      when  smartd  starts  up	and  has no further effect.  The valid
	      arguments to this Directive are on and off.

	      The delay between tests is  vendor-specific,  but	 is  typically
	      four hours.

	      Note that SMART Automatic Offline Testing is not part of the ATA
	      Specification.  Please see the smartctl -o  command-line	option
	      documentation for further information about this feature.

       -S VALUE
	      Enables or disables Attribute Autosave when smartd starts up and
	      has no further effect.  The valid arguments  to  this  Directive
	      are  on  and  off.   Also affects SCSI devices.  [Please see the
	      smartctl -S command-line option.]

       -H     [ATA only] Check the SMART health status of the  disk.   If  any
	      Prefailure  Attributes are less than or equal to their threshold
	      values, then disk failure is predicted in less  than  24	hours,
	      and  a  message at loglevel ´LOG_CRIT´ will be logged to syslog.
	      [Please see the smartctl -H command-line option.]

       -l TYPE
	      Reports increases in the number of errors in one of three	 SMART
	      logs.  The valid arguments to this Directive are:

	      error  -	[ATA only] report if the number of ATA errors reported
	      in the Summary SMART error log  has  increased  since  the  last
	      check.

	      xerror  - [ATA only] report if the number of ATA errors reported
	      in the Extended Comprehensive  SMART  error  log	has  increased
	      since the last check.

	      If  both ´-l error´ and ´-l xerror´ are specified, smartd checks
	      the maximum of both values.

	      [Please see the smartctl -l xerror command-line option.]

	      selftest - report if the number of failed tests reported in  the
	      SMART  Self-Test	Log  has increased since the last check, or if
	      the timestamp associated with the most recent  failed  test  has
	      increased.  Note that such errors will only be logged if you run
	      self-tests on the disk (and it fails a test!).   Self-Tests  can
	      be  run  automatically  by smartd: please see the ´-s´ Directive
	      below.  Self-Tests  can  also  be	 run  manually	by  using  the
	      ´-t short´  and ´-t long´ options of smartctl and the results of
	      the testing can be observed  using  the  smartctl	 ´-l selftest´
	      command-line  option.   [Please  see the smartctl -l and -t com‐
	      mand-line options.]

	      [ATA only] Failed self-tests  outdated  by  a  newer  successful
	      extended	self-test  are	ignored.  The warning email counter is
	      reset if the number of failed self tests	dropped	 to  0.	  This
	      typically	 happens  when	an extended self-test is run after all
	      bad sectors have been reallocated.

	      offlinests[,ns] - [ATA only] report if the Offline Data  Collec‐
	      tion  status  has changed since the last check.  The report will
	      be logged as LOG_CRIT if the  new	 status	 indicates  an	error.
	      With  some  drives  the  status  often  changes,	therefore  ´-l
	      offlinests´ is not enabled by '-a´ Directive.   Appending	 ´,ns´
	      (no standby) to this directive is not implemented on Linux.

	      selfteststs[,ns]	- [ATA only] report if the Self-Test execution
	      status has changed since the last check.	 The  report  will  be
	      logged  as  LOG_CRIT  if	the  new  status  indicates  an error.
	      Appending ´,ns´ (no standby) to this  directive  is  not	imple‐
	      mented on Linux.

	      scterc,READTIME,WRITETIME - [ATA only] sets the SCT Error Recov‐
	      ery Control settings to the specified values (deciseconds)  when
	      smartd starts up and has no further effect.  Values of 0 disable
	      the feature, other values less than 65  are  probably  not  sup‐
	      ported.  For RAID configurations, this is typically set to 70,70
	      deciseconds.  [Please see the smartctl  -l  scterc  command-line
	      option.]

       -e NAME[,VALUE]
	      Sets  non-SMART device settings when smartd starts up and has no
	      further effect.  [Please see  the	 smartctl  --set  command-line
	      option.]	Valid arguments are:

	      aam,[N|off]  - [ATA only] Sets the Automatic Acoustic Management
	      (AAM) feature.

	      apm,[N|off] - [ATA only]	Sets  the  Advanced  Power  Management
	      (APM) feature.

	      lookahead,[on|off]  -  [ATA  only] Sets the read look-ahead fea‐
	      ture.

	      security-freeze - [ATA only] Sets ATA Security feature to frozen
	      mode.

	      standby,[N|off]  -  [ATA only] Sets the standby (spindown) timer
	      and places the drive in the IDLE mode.

	      wcache,[on|off] - [ATA only] Sets the volatile write cache  fea‐
	      ture.

       -s REGEXP
	      Run  Self-Tests  or Offline Immediate Tests, at scheduled times.
	      A Self- or Offline Immediate Test will be	 run  at  the  end  of
	      periodic	device	polling,  if  all  12 characters of the string
	      T/MM/DD/d/HH match the extended regular expression REGEXP. Here:

	      T	  is the type of the test.  The values that smartd will try to
		  match	 (in  turn)  are:  ´L´ for a Long Self-Test, ´S´ for a
		  Short Self-Test, ´C´ for a Conveyance Self-Test (ATA	only),
		  and  ´O´  for an Offline Immediate Test (ATA only).  As soon
		  as a match is found, the test will be started and  no	 addi‐
		  tional  matches  will	 be  sought  for  that device and that
		  polling cycle.

		  To run scheduled Selective  Self-Tests,  use	´n´  for  next
		  span,	 ´r´  to  redo last span, or ´c´ to continue with next
		  span or redo last span based on status of  last  test.   The
		  LBA  range  is  based	 on the first span from the last test.
		  See the smartctl -t select,[next|redo|cont] options for fur‐
		  ther info.

		  Some disks (e.g. WD) do not preserve the selective self test
		  log  accross	power  cycles.	 If  state  persistence	 (´-s´
		  option)  is  enabled,	 the  last  test  span is preserved by
		  smartd and used if (and only if) the selective self test log
		  is empty.

	      MM  is the month of the year, expressed with two decimal digits.
		  The range is from 01 (January) to 12	(December)  inclusive.
		  Do  not  use a single decimal digit or the match will always
		  fail!

	      DD  is the day of the month, expressed with two decimal  digits.
		  The  range  is from 01 to 31 inclusive.  Do not use a single
		  decimal digit or the match will always fail!

	      d	  is the day of the week, expressed with  one  decimal	digit.
		  The range is from 1 (Monday) to 7 (Sunday) inclusive.

	      HH  is the hour of the day, written with two decimal digits, and
		  given in hours after midnight.  The range is 00 (midnight to
		  just before 1am) to 23 (11pm to just before midnight) inclu‐
		  sive.	 Do not use a single decimal digit or the  match  will
		  always fail!

	      Some  examples  follow.	In reading these, keep in mind that in
	      extended regular expressions a dot ´.´ matches any single	 char‐
	      acter,  and a parenthetical expression such as ´(A|B|C)´ denotes
	      any one of the three possibilities A, B, or C.

	      To schedule a short Self-Test between 2-3am every morning, use:
	       -s S/../.././02
	      To schedule a long Self-Test between 4-5am every Sunday morning,
	      use:
	       -s L/../../7/04
	      To  schedule  a  long Self-Test between 10-11pm on the first and
	      fifteenth day of each month, use:
	       -s L/../(01|15)/./22
	      To schedule an Offline Immediate test after every midnight, 6am,
	      noon,and	6pm,  plus a Short Self-Test daily at 1-2am and a Long
	      Self-Test every Saturday at 3-4am, use:
	       -s (O/../.././(00|06|12|18)|S/../.././01|L/../../6/03)
	      If Long Self-Tests of a large disks take longer than the	system
	      uptime,  a  full disk test can be performed by several Selective
	      Self-Tests.  To setup a full test of a 1TB disk within  20  days
	      (one 50GB span each day), run this command once:
		smartctl -t select,0-99999999 /dev/sda
	      To run the next test spans on Monday-Friday between 12-13am, run
	      smartd with this directive:
	       -s n/../../[1-5]/12

	      Scheduled tests are run  immediately  following  the  regularly-
	      scheduled	 device	 polling, if the current local date, time, and
	      test type, match REGEXP.	 By  default  the  regularly-scheduled
	      device  polling  occurs  every  thirty  minutes  after  starting
	      smartd.  Take caution if you use the ´-i´ option	to  make  this
	      polling  interval	 more  than  sixty minutes: the poll times may
	      fail to coincide with any of the testing	times  that  you  have
	      specified	 with  REGEXP.	In this case the test will be run fol‐
	      lowing the next device polling.

	      Before running an offline or self-test, smartd checks to be sure
	      that  a  self-test  is  not  already running.  If a self-test is
	      already running, then this running self test will not be	inter‐
	      rupted to begin another test.

	      smartd  will not attempt to run any type of test if another test
	      was already started or run in the same hour.

	      To avoid performance problems during system  boot,  smartd  will
	      not  attempt to run any scheduled tests following the very first
	      device polling (unless ´-q onecheck´ is specified).

	      Each time a test is run, smartd will log	an  entry  to  SYSLOG.
	      You  can	use these or the '-q showtests' command-line option to
	      verify that you  constructed  REGEXP  correctly.	 The  matching
	      order  (L	 before	 S before C before O) ensures that if multiple
	      test types are all scheduled for the same hour, the longer  test
	      type has precedence.  This is usually the desired behavior.

	      If  the  scheduled tests are used in conjunction with state per‐
	      sistence (´-s´ option), smartd will also try to match the	 hours
	      since last shutdown (or 90 days at most). If any test would have
	      been started during downtime, the longest (see above)  of	 these
	      tests is run after second device polling.

	      If  the  ´-n´  directive	is  used  and any test would have been
	      started during disk standby time, the longest of these tests  is
	      run when the disk is active again.

	      Unix  users:  please  beware that the rules for extended regular
	      expressions [regex(7)] are not the same as the rules  for	 file-
	      name pattern matching by the shell [glob(7)].  smartd will issue
	      harmless informational warning messages if it detects characters
	      in  REGEXP  that appear to indicate that you have made this mis‐
	      take.

       -m ADD Send a warning email to the email address ADD if the ´-H´, ´-l´,
	      ´-f´,  ´-C´, or ´-O´ Directives detect a failure or a new error,
	      or if a SMART command to the disk	 fails.	 This  Directive  only
	      works  in	 conjunction  with these other Directives (or with the
	      equivalent default ´-a´ Directive).

	      To prevent your email in-box from getting filled up with warning
	      messages, by default only a single warning will be sent for each
	      of the enabled alert types, ´-H´, ´-l´, ´-f´, ´-C´, or ´-O´ even
	      if  more than one failure or error is detected or if the failure
	      or error persists.  [This behavior can be modified; see the ´-M´
	      Directive below.]

	      To  send	email  to more than one user, please use the following
	      "comma	  separated"	  form	    for	     the      address:
	      user1@add1,user2@add2,...,userN@addN (with no spaces).

	      To  test	that  email is being sent correctly, use the ´-M test´
	      Directive described below to send	 one  test  email  message  on
	      smartd startup.

	      By  default,  email  is  sent using the system mail command.  In
	      order that smartd find the mail command (normally /bin/mail)  an
	      executable  named	 ´mail´	 must  be  in the path of the shell or
	      environment from which smartd was started.  If you wish to spec‐
	      ify  an  explicit	 path  to  the	mail  executable  (for example
	      /usr/local/bin/mail) or a custom script to run, please  use  the
	      ´-M exec´ Directive below.

	      Note  also that there is a special argument <nomailer> which can
	      be given to the ´-m´ Directive in conjunction with the ´-M exec´
	      Directive. Please see below for an explanation of its effect.

	      If the mailer or the shell running it produces any STDERR/STDOUT
	      output, then a snippet of that output will be copied to  SYSLOG.
	      The  remainder  of  the  output  is  discarded.  If problems are
	      encountered in sending mail, this should help you to  understand
	      and  fix	them.  If you have mail problems, we recommend running
	      smartd in debug mode with the ´-d´ flag,	using  the  ´-M	 test´
	      Directive described below.

	      [NEW  EXPERIMENTAL  SMARTD FEATURE] If a word of the comma sepa‐
	      rated  list  has	 the   form   ´@plugin´,   a   custom	script
	      /etc/smartd_warning.d/plugin is run and the word is removed from
	      the list before sending mail. The string	´plugin´  may  be  any
	      valid name except ´ALL´.	If ´@ALL´ is specified, all scripts in
	      /etc/smartd_warning.d/* are run instead.	This is handled by the
	      script /etc/smartd_warning.sh (see also ´-M exec´ below).

       -M TYPE
	      These  Directives	 modify the behavior of the smartd email warn‐
	      ings enabled with the  ´-m´  email  Directive  described	above.
	      These  ´-M´  Directives  only  work in conjunction with the ´-m´
	      Directive and can not be used without it.

	      Multiple -M Directives may be given.  If more than  one  of  the
	      following	 three	-M  Directives	are given (example: -M once -M
	      daily) then the final one (in the example, -M daily) is used.

	      The valid arguments to the -M Directive are (one of the  follow‐
	      ing three):

	      once - send only one warning email for each type of disk problem
	      detected.	 This is the default unless  state  persistence	 (´-s´
	      option) is enabled.

	      daily  -	send additional warning reminder emails, once per day,
	      for each type of disk problem detected.  This is the default  if
	      state persistence (´-s´ option) is enabled.

	      diminishing  -  send additional warning reminder emails, after a
	      one-day interval, then  a	 two-day  interval,  then  a  four-day
	      interval, and so on for each type of disk problem detected. Each
	      interval is twice as long as the previous interval.

	      If a disk problem is no  longer  detected,  the  internal	 email
	      counter  is reset.  If the problem reappears a new warning email
	      is sent immediately.

	      In addition, one may add zero or more of	the  following	Direc‐
	      tives:

	      test - send a single test email immediately upon smartd startup.
	      This allows one to verify that  email  is	 delivered  correctly.
	      Note  that  if this Directive is used, smartd will also send the
	      normal email warnings that were enabled with the ´-m´ Directive,
	      in addition to the single test email!

	      exec  PATH - run the executable PATH instead of the default mail
	      command, when smartd needs to send email.	 PATH must point to an
	      executable binary file or script.

	      By  setting  PATH	 to point to a customized script, you can make
	      smartd perform useful tricks when a  disk	 problem  is  detected
	      (beeping	the  console,  shutting down the machine, broadcasting
	      warnings to all logged-in users, etc.)  But please  be  careful.
	      smartd  will block until the executable PATH returns, so if your
	      executable hangs, then  smartd  will  also  hang.	  Some	sample
	      scripts  are  included  in /usr/share/doc/smartmontools/example‐
	      scripts/.

	      The return status of the executable is  recorded	by  smartd  in
	      SYSLOG.  The  executable	is  not expected to write to STDOUT or
	      STDERR.  If it does, then this is interpreted as indicating that
	      something is going wrong with your executable, and a fragment of
	      this output is logged to SYSLOG to help you  to  understand  the
	      problem.	Normally, if you wish to leave some record behind, the
	      executable should send mail or write to a file or device.

	      Before running the executable, smartd sets a number of  environ‐
	      ment variables.  These environment variables may be used to con‐
	      trol  the	 executable´s  behavior.   The	environment  variables
	      exported by smartd are:

	      SMARTD_MAILER
		  is  set  to  the  argument of -M exec, if present or else to
		  ´mail´ (examples: /bin/mail, mail).

	      SMARTD_DEVICE
		  is set to the device path (examples: /dev/hda, /dev/sdb).

	      SMARTD_DEVICETYPE
		  is set to the device type specified  by  ´-d´	 directive  or
		  ´auto´ if none.

	      SMARTD_DEVICESTRING
		  is  set to the device description.  For SMARTD_DEVICETYPE of
		  ata or scsi, this is the same as SMARTD_DEVICE.   For	 3ware
		  RAID	  controllers,	  the	 form	 used	is   ´/dev/sdc
		  [3ware_disk_01]´.  For HighPoint RocketRAID controller,  the
		  form	is  ´/dev/sdd  [hpt_1/1/1]´ under Linux or ´/dev/hptrr
		  [hpt_1/1/1]´ under FreeBSD.  For Areca controllers, the form
		  is  ´/dev/sg2	 [areca_disk_09]´  on  Linux or	 ´/dev/arcmsr0
		  [areca_disk_09]´ on FreeBSD.	 In  these  cases  the	device
		  string  contains  a  space  and  is  NOT  quoted.  So to use
		  $SMARTD_DEVICESTRING in a bash script	 you  should  probably
		  enclose it in double quotes.

	      SMARTD_DEVICEINFO
		  is  set to device identify information.  It includes most of
		  the info printed by smartctl -i but uses a brief single line
		  format.   This device info is also logged when smartd starts
		  up.  The string contains space characters and is NOT quoted.

	      SMARTD_FAILTYPE
		  gives the reason for the warning or message email.  The pos‐
		  sible values that it takes and their meanings are:
		  EmailTest: this is an email test message.
		  Health: the SMART health status indicates imminent failure.
		  Usage: a usage Attribute has failed.
		  SelfTest: the number of self-test failures has increased.
		  ErrorCount:  the  number  of errors in the ATA error log has
		  increased.
		  CurrentPendingSector: one of more disk sectors could not  be
		  read	and  are marked to be reallocated (replaced with spare
		  sectors).
		  OfflineUncorrectableSector:  during  off-line	 testing,   or
		  self-testing, one or more disk sectors could not be read.
		  Temperature:	Temperature  reached  critical	limit  (see -W
		  directive).
		  FailedHealthCheck: the SMART health status command failed.
		  FailedReadSmartData: the command  to	read  SMART  Attribute
		  data failed.
		  FailedReadSmartErrorLog: the command to read the SMART error
		  log failed.
		  FailedReadSmartSelfTestLog: the command to  read  the	 SMART
		  self-test log failed.
		  FailedOpenDevice: the open() command to the device failed.

	      SMARTD_ADDRESS
		  is determined by the address argument ADD of the ´-m´ Direc‐
		  tive.	 If ADD is <nomailer>, then SMARTD_ADDRESS is not set.
		  Otherwise,  it  is  set to the comma-separated-list of email
		  addresses  given  by	the  argument  ADD,  with  the	commas
		  replaced  by	spaces	(example:admin@example.com  root).  If
		  more than one email address is given, then this string  will
		  contain  space characters and is NOT quoted, so to use it in
		  a bash script you may want to enclose it in double quotes.

	      SMARTD_MESSAGE
		  is set to the one sentence  summary  warning	email  message
		  string  from	smartd.	  This	message	 string contains space
		  characters and is NOT quoted. So to use $SMARTD_MESSAGE in a
		  bash script you should probably enclose it in double quotes.

	      SMARTD_FULLMESSAGE
		  is  set  to the contents of the entire email warning message
		  string from smartd.  This message string contains space  and
		  return   characters	and   is   NOT	 quoted.   So  to  use
		  $SMARTD_FULLMESSAGE in a bash	 script	 you  should  probably
		  enclose it in double quotes.

	      SMARTD_TFIRST
		  is a text string giving the time and date at which the first
		  problem of this type was reported. This text string contains
		  space	 characters  and  no  newlines, and is NOT quoted. For
		  example:
		  Sun Feb  9 14:58:19 2003 CST

	      SMARTD_TFIRSTEPOCH
		  is an integer, which is the unix epoch  (number  of  seconds
		  since Jan 1, 1970) for SMARTD_TFIRST.

	      SMARTD_PREVCNT
		  is  an  integer  specifying  the number of previous messages
		  sent.	 It is set to ´0´ for the first message.

	      SMARTD_NEXTDAYS
		  is an integer specifying the number of days until  the  next
		  message  will	 be sent.  It it set to empty on ´-M once´ and
		  set to ´1´ on ´-M daily´.

	      The shell which is used to run  PATH  is	system-dependent.  For
	      vanilla  Linux/glibc  it´s bash. For other systems, the man page
	      for popen(3) should say what shell is used.

	      If the ´-m ADD´ Directive is given with a normal	address	 argu‐
	      ment,  then  the	executable pointed to by PATH will be run in a
	      shell with STDIN receiving the body of the  email	 message,  and
	      with the same command-line arguments:
	      -s "$SMARTD_SUBJECT" $SMARTD_ADDRESS
	      that would normally be provided to ´mail´.  Examples include:
	      -m user@home -M exec /bin/mail
	      -m admin@work -M exec /usr/local/bin/mailto
	      -m root -M exec /Example_1/bash/script/below

	      If  the  ´-m  ADD´  Directive  is given with the special address
	      argument <nomailer> then the executable pointed to  by  PATH  is
	      run  in a shell with no STDIN and no command-line arguments, for
	      example:
	      -m <nomailer> -M exec /Example_2/bash/script/below
	      If the executable produces any STDERR/STDOUT output, then smartd
	      assumes  that  something	is  going wrong, and a snippet of that
	      output will be copied to SYSLOG.	The remainder of the output is
	      then discarded.

	      Some  EXAMPLES  of  scripts  that can be used with the ´-M exec´
	      Directive	 are  given  below.   Some  sample  scripts  are  also
	      included in /usr/share/doc/smartmontools/examplescripts/.

	      [NEW  EXPERIMENTAL  SMARTD FEATURE] The executable is run by the
	      script /etc/smartd_warning.sh.  This script formats subject  and
	      full message based on SMARTD_MESSAGE and other environment vari‐
	      ables set by smartd.  The environment  variables	SMARTD_SUBJECT
	      and  SMARTD_FULLMESSAGE are set by the script before running the
	      executable.

       -f     [ATA only] Check for ´failure´  of  any  Usage  Attributes.   If
	      these  Attributes	 are  less  than or equal to the threshold, it
	      does NOT indicate imminent disk failure.	It "indicates an advi‐
	      sory condition where the usage or age of the device has exceeded
	      its intended design life period."	 [Please see the  smartctl  -A
	      command-line option.]

       -p     [ATA  only]  Report anytime that a Prefail Attribute has changed
	      its value since the last check. [Please see the smartctl -A com‐
	      mand-line option.]

       -u     [ATA only] Report anytime that a Usage Attribute has changed its
	      value since the last check. [Please see the smartctl -A command-
	      line option.]

       -t     [ATA  only] Equivalent to turning on the two previous flags ´-p´
	      and ´-u´.	 Tracks changes in all device  Attributes  (both  Pre‐
	      failure  and  Usage).  [Please  see the smartctl -A command-line
	      option.]

       -i ID  [ATA only] Ignore device Attribute number ID when	 checking  for
	      failure  of  Usage  Attributes.  ID must be a decimal integer in
	      the range from 1 to 255.	This Directive modifies	 the  behavior
	      of the ´-f´ Directive and has no effect without it.

	      This  is	useful,	 for  example, if you have a very old disk and
	      don´t want to keep getting messages about the  hours-on-lifetime
	      Attribute	 (usually  Attribute  9)  failing.  This Directive may
	      appear multiple times for a single device, if you want to ignore
	      multiple Attributes.

       -I ID  [ATA  only]  Ignore device Attribute ID when tracking changes in
	      the Attribute values.  ID must be a decimal integer in the range
	      from  1  to  255.	  This	Directive modifies the behavior of the
	      ´-p´, ´-u´, and ´-t´ tracking Directives and has no effect with‐
	      out one of them.

	      This  is useful, for example, if one of the device Attributes is
	      the disk temperature (usually Attribute 194 or 231). It´s annoy‐
	      ing  to  get  reports  each  time the temperature changes.  This
	      Directive may appear multiple times for a single device, if  you
	      want to ignore multiple Attributes.

       -r ID[!]
	      [ATA  only]  When tracking, report the Raw value of Attribute ID
	      along with its (normally reported) Normalized value.  ID must be
	      a	 decimal  integer  in the range from 1 to 255.	This Directive
	      modifies the behavior of	the  ´-p´,  ´-u´,  and	´-t´  tracking
	      Directives  and  has no effect without one of them.  This Direc‐
	      tive may be given multiple times.

	      A common use of this Directive is to track the  device  Tempera‐
	      ture (often ID=194 or 231).

	      If the optional flag ´!´ is appended, a change of the Normalized
	      value is considered critical.  The  report  will	be  logged  as
	      LOG_CRIT and a warning email will be sent if ´-m´ is specified.

       -R ID[!]
	      [ATA  only]  When	 tracking,  report  whenever  the Raw value of
	      Attribute ID  changes.   (Normally  smartd  only	tracks/reports
	      changes of the Normalized Attribute values.)  ID must be a deci‐
	      mal integer in the range from 1 to 255.  This Directive modifies
	      the behavior of the ´-p´, ´-u´, and ´-t´ tracking Directives and
	      has no effect without one of them.  This Directive may be	 given
	      multiple times.

	      If  this	Directive  is given, it automatically implies the ´-r´
	      Directive for the same Attribute, so that the Raw value  of  the
	      Attribute is reported.

	      A	 common	 use of this Directive is to track the device Tempera‐
	      ture (often ID=194 or 231).  It is also useful for understanding
	      how  different  types  of	 system behavior affects the values of
	      certain Attributes.

	      If the optional flag ´!´ is appended, a change of the Raw	 value
	      is  considered  critical.	 The report will be logged as LOG_CRIT
	      and a warning email will be sent if ´-m´ is specified.  An exam‐
	      ple is ´-R 5!´ to warn when new sectors are reallocated.

       -C ID[+]
	      [ATA  only]  Report  if the current number of pending sectors is
	      non-zero.	 Here ID is the id number of the Attribute  whose  raw
	      value is the Current Pending Sector count.  The allowed range of
	      ID is 0 to 255 inclusive.	  To  turn  off	 this  reporting,  use
	      ID = 0.	If  the -C ID option is not given, then it defaults to
	      -C 197 (since Attribute 197 is generally used to monitor pending
	      sectors).	  If  the  name	 of this Attribute is changed by a ´-v
	      197,FORMAT,NAME´ directive, the default is changed to -C 0.

	      If ´+´ is specified, a report is only printed if the  number  of
	      sectors  has  increased  between two check cycles. Some disks do
	      not reset this attribute when a bad sector is reallocated.   See
	      also ´-v 197,increasing´ below.

	      The warning email counter is reset if the number of pending sec‐
	      tors dropped to 0.  This typically happens when all pending sec‐
	      tors have been reallocated or could be read again.

	      A	 pending sector is a disk sector (containing 512 bytes of your
	      data) which the device would like to mark as ``bad" and  reallo‐
	      cate.   Typically	 this  is  because your computer tried to read
	      that sector, and the read failed because the data on it has been
	      corrupted	 and  has  inconsistent	 Error Checking and Correction
	      (ECC) codes.  This is important to know, because it  means  that
	      there  is some unreadable data on the disk.  The problem of fig‐
	      uring out what file this data belongs to is operating system and
	      file  system  specific.	You  can typically force the sector to
	      reallocate by writing to it (translation: make the  device  sub‐
	      stitute a spare good sector for the bad one) but at the price of
	      losing the 512 bytes of data stored there.

       -U ID[+]
	      [ATA only] Report if the number of offline uncorrectable sectors
	      is  non-zero.   Here  ID is the id number of the Attribute whose
	      raw value	 is  the  Offline  Uncorrectable  Sector  count.   The
	      allowed  range  of  ID  is 0 to 255 inclusive.  To turn off this
	      reporting, use ID = 0.  If the -U ID option is not  given,  then
	      it  defaults to -U 198 (since Attribute 198 is generally used to
	      monitor offline uncorrectable sectors).  If  the	name  of  this
	      Attribute	 is  changed  by  a  ´-v  198,FORMAT,NAME´ (except ´-v
	      198,FORMAT,Offline_Scan_UNC_SectCt´), directive, the default  is
	      changed to -U 0.

	      If  ´+´  is specified, a report is only printed if the number of
	      sectors has increased since the last check cycle. Some disks  do
	      not  reset this attribute when a bad sector is reallocated.  See
	      also ´-v 198,increasing´ below.

	      The warning email counter is reset  if  the  number  of  offline
	      uncorrectable sectors dropped to 0.  This typically happens when
	      all offline uncorrectable sectors have been reallocated or could
	      be read again.

	      An  offline  uncorrectable sector is a disk sector which was not
	      readable during an off-line scan or a self-test.	This is impor‐
	      tant  to know, because if you have data stored in this disk sec‐
	      tor, and you need to read it, the read will  fail.   Please  see
	      the previous ´-C´ option for more details.

       -W DIFF[,INFO[,CRIT]]
	      Report  if  the current temperature had changed by at least DIFF
	      degrees since last report, or if new min or max  temperature  is
	      detected.	 Report or Warn if the temperature is greater or equal
	      than one of INFO or CRIT degrees Celsius.	 If the limit CRIT  is
	      reached,	a  message  with loglevel ´LOG_CRIT´ will be logged to
	      syslog and a warning email will be send if ´-m´ is specified. If
	      only  the	 limit	INFO  is  reached,  a  message	with  loglevel
	      ´LOG_INFO´ will be logged.

	      The warning email counter is reset if  the  temperature  dropped
	      below INFO or CRIT-5 if INFO is not specified.

	      If  this directive is used in conjunction with state persistence
	      (´-s´ option), the min and max temperature values are  preserved
	      across boot cycles. The minimum temperature value is not updated
	      during the first 30 minutes after startup.

	      To disable any of the 3 reports, set the corresponding limit  to
	      0.  Trailing zero arguments may be omitted. By default, all tem‐
	      perature reports are disabled (´-W 0´).

	      To track temperature changes of at least 2 degrees, use:
	      -W 2
	      To log informal messages on temperatures of at least 40 degrees,
	      use:
	      -W 0,40
	      For  warning  messages/mails  on	temperatures  of  at  least 45
	      degrees, use:
	      -W 0,0,45
	      To combine all of the above reports, use:
	      -W 2,40,45

	      For ATA devices, smartd interprets Attribute 194 or 190 as  Tem‐
	      perature	Celsius by default. This can be changed to Attribute 9
	      or 220 by the drive database  or	by  the	 ´-v  9,temp´  or  ´-v
	      220,temp´ directive.

       -F TYPE
	      [ATA  only]  Modifies  the  behavior of smartd to compensate for
	      some known and understood device firmware bug.   This  directive
	      may be used multiple times.  The valid arguments are:

	      none  - Assume that the device firmware obeys the ATA specifica‐
	      tions.  This is the default, unless the device has  presets  for
	      ´-F´ in the drive database.  Using this directive will over-ride
	      any preset values.

	      nologdir - Suppresses read attempts of SMART or  GP  Log	Direc‐
	      tory.   Support  for  all	 standard  logs	 is assumed without an
	      actual check.  Some Intel SSDs may freeze if log	address	 0  is
	      read.

	      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 smartd  to  evaluate
	      these  quantities	 in byte-reversed order.  Some signs that your
	      disk needs this option are (1) no self-test  log	printed,  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  some  Samsung  disks  the  number of ATA errors
	      reported is byte swapped.	 Enabling this option tells smartd  to
	      evaluate this quantity in byte-reversed order.

	      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. If this directive is speci‐
	      fied, smartd will not skip the  next  scheduled  self-test  (see
	      Directive ´-s´ above) in this case.

	      xerrorlba - This only affects smartctl.

	      [Please see the smartctl -F command-line option.]

       -v ID,FORMAT[:BYTEORDER][,NAME]
	      [ATA  only]  Sets	 a  vendor-specific raw value print FORMAT, an
	      optional BYTEORDER and an optional NAME for Attribute ID.	  This
	      directive	 may  be  used multiple times.	Please see smartctl -v
	      command-line option for further details.

	      The following arguments affect smartd warning output:

	      197,increasing - Raw Attribute number 197 (Current Pending  Sec‐
	      tor  Count)  is  not  reset if uncorrectable sectors are reallo‐
	      cated.  This sets ´-C 197+´ if no other ´-C´ directive is speci‐
	      fied.

	      198,increasing - Raw Attribute number 198 (Offline Uncorrectable
	      Sector Count) is not reset if uncorrectable sector  are  reallo‐
	      cated.  This sets ´-U 198+´ if no other ´-U´ directive is speci‐
	      fied.

       -P TYPE
	      [ATA only]  Specifies  whether  smartd  should  use  any	preset
	      options  that are available for this drive.  The valid arguments
	      to this Directive are:

	      use - use any presets that are available for this	 drive.	  This
	      is the default.

	      ignore - do not use any presets for this drive.

	      show - show the presets listed for this drive in the database.

	      showall - show the presets that are available for all drives and
	      then exit.

	      [Please see the smartctl -P command-line option.]

       -a     Equivalent to turning on all of the following  Directives:  ´-H´
	      to  check	 the  SMART  health status, ´-f´ to report failures of
	      Usage (rather than Prefail) Attributes, ´-t´ to track changes in
	      both  Prefailure	and  Usage  Attributes,	 ´-l error´  to report
	      increases in the number of ATA errors, ´-l selftest´  to	report
	      increases	 in  the number of Self-Test Log errors, ´-l selftest‐
	      sts´ to report changes of Self-Test execution status,  ´-C  197´
	      to  report  nonzero  values of the current pending sector count,
	      and ´-U 198´ to report nonzero values  of	 the  offline  pending
	      sector count.

	      Note  that  -a is the default for ATA devices.  If none of these
	      other Directives is given, then -a is assumed.

       #      Comment: ignore the remainder of the line.

       \      Continuation character: if this is the last  non-white  or  non-
	      comment  character  on a line, then the following line is a con‐
	      tinuation of the current one.

       If you are not sure which Directives to use,  I	suggest	 experimenting
       for  a  few  minutes with smartctl to see what SMART functionality your
       disk(s) support(s).  If you do not like voluminous syslog  messages,  a
       good choice of smartd configuration file Directives might be:
       -H -l selftest -l error -f.
       If you want more frequent information, use: -a.

       ADDITIONAL DETAILS ABOUT DEVICESCAN
	      If  a  non-comment  entry	 in the configuration file is the text
	      string DEVICESCAN in capital letters, then  smartd  will	ignore
	      any remaining lines in the configuration file, and will scan for
	      devices (see also smartd(8) man page).

	      If DEVICESCAN is not followed by	any  Directives,  then	smartd
	      will  scan  for  both ATA and SCSI devices, and will monitor all
	      possible SMART properties of any devices that are found.

	      DEVICESCAN may optionally be followed by any  valid  Directives,
	      which will be applied to all devices that are found in the scan.
	      For example
	      DEVICESCAN -m root@example.com
	      will scan for all devices, and then monitor them.	 It will  send
	      one email warning per device for any problems that are found.
	      DEVICESCAN -d ata -m root@example.com
	      will do the same, but restricts the scan to ATA devices only.
	      DEVICESCAN -H -d ata -m root@example.com
	      will  do	the same, but only monitors the SMART health status of
	      the devices, (rather than the default  -a,  which	 monitors  all
	      SMART properties).

	      [NEW EXPERIMENTAL SMARTD FEATURE] Configuration entries for spe‐
	      cific devices may precede the DEVICESCAN entry.  For example
	      DEFAULT -m root@example.com
	      /dev/sda -s S/../.././02
	      /dev/sdc -d ignore
	      DEVICESCAN -s L/../.././02
	      will scan for all devices except /dev/sda and /dev/sdc,  monitor
	      them,  and  run a long test between 2-3am every morning.	Device
	      /dev/sda will also be monitored, but only a short test  will  be
	      run.   Device  /dev/sdc will be ignored.	Warning emails will be
	      sent for all monitored devices.

       EXAMPLES OF SHELL SCRIPTS FOR ´-M exec´
	      These are two examples of shell scripts that can	be  used  with
	      the ´-M exec PATH´ Directive described previously.  The paths to
	      these scripts and similar executables is the  PATH  argument  to
	      the ´-M exec PATH´ Directive.

	      Example  1:  This	 script	 is  for  use with ´-m ADDRESS -M exec
	      PATH´.  It appends the output of smartctl -a to  the  output  of
	      the smartd email warning message and sends it to ADDRESS.

	      #! /bin/bash

	      # Save the email message (STDIN) to a file:
	      cat > /root/msg

	      # Append the output of smartctl -a to the message:
	      /usr/sbin/smartctl -a -d $SMART_DEVICETYPE $SMARTD_DEVICE >> /root/msg

	      # Now email the message to the user at address ADD:
	      /bin/mail -s "$SMARTD_SUBJECT" $SMARTD_ADDRESS < /root/msg

	      Example  2:  This	 script is for use with ´-m <nomailer> -M exec
	      PATH´. It warns all users about a disk problem,  waits  30  sec‐
	      onds, and then powers down the machine.

	      #! /bin/bash

	      # Warn all users of a problem
	      wall ´Problem detected with disk: ´ "$SMARTD_DEVICESTRING"
	      wall ´Warning message from smartd is: ´ "$SMARTD_MESSAGE"
	      wall ´Shutting down machine in 30 seconds... ´

	      # Wait half a minute
	      sleep 30

	      # Power down the machine
	      /sbin/shutdown -hf now

	      Some  example  scripts  are  distributed	with the smartmontools
	      package, in /usr/share/doc/smartmontools/examplescripts/.

	      Please note that these scripts typically run  as	root,  so  any
	      files  that  they	 read/write should not be writable by ordinary
	      users or reside in directories like /tmp that  are  writable  by
	      ordinary users and may expose your system to symlink attacks.

	      As  previously  described,  if  the  scripts  write to STDOUT or
	      STDERR, this is interpreted as  indicating  that	there  was  an
	      internal error within the script, and a snippet of STDOUT/STDERR
	      is logged to SYSLOG.  The remainder is flushed.

AUTHORS
       Bruce Allen
       University of Wisconsin - Milwaukee Physics Department
       Christian Franke (Windows interface, C++	 redesign,  most  enhancements
       since 2009)
       smartmontools-support@lists.sourceforge.net

CONTRIBUTORS
       The following have made large contributions to smartmontools:
       Casper Dik (Solaris SCSI interface)
       Douglas Gilbert (SCSI subsystem)
       Guido Guenther (Autoconf/Automake packaging)
       Geoffrey Keating (Darwin ATA interface)
       Eduard Martinescu (FreeBSD interface)
       Frédéric L. W. Meunier (Web site and Mailing list)
       Gabriele Pohl (Web site and Wiki, conversion from CVS to SVN)
       Keiji Sawada (Solaris ATA interface)
       Manfred Schwarb (Drive database)
       Sergey Svishchev (NetBSD interface)
       David Snyder and Sergey Svishchev (OpenBSD interface)
       Phil Williams (User interface and drive database)
       Shengfeng Zhou (Linux/FreeBSD HighPoint RocketRAID interface)
       Many other individuals have made smaller contributions and corrections.

CREDITS
       This  code  was derived from the smartsuite package, written by Michael
       Cornwell, and from the previous UCSC smartsuite	package.   It  extends
       these  to  cover	 ATA-5 disks.  This code was originally developed as a
       Senior Thesis by Michael Cornwell at the Concurrent Systems  Laboratory
       (now  part  of the Storage Systems Research Center), Jack Baskin School
       of    Engineering,    University	   of	 California,	Santa	 Cruz.
       http://ssrc.soe.ucsc.edu/ .

HOME PAGE FOR SMARTMONTOOLS:
       Please  see  the following web site for updates, further documentation,
       bug reports and patches: http://smartmontools.sourceforge.net/

SEE ALSO:
       smartd(8),  smartctl(8),	 syslogd(8),   syslog.conf(5),	 badblocks(8),
       ide-smart(8), regex(7).

SVN ID OF THIS PAGE:
       $Id: smartd.conf.5.in 3833 2013-07-20 15:00:04Z chrfranke $

smartmontools-6.2		  2013-07-26			SMARTD.CONF(5)
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