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 amutil(1M)							  amutil(1M)




 NAME
      amutil - controls various disk array management functions

 SYNOPSIS
      amutil { [ -f channel:ID,channel:ID... ] | [ -F ] | [ -s ] |
	   [ -R LUN -f Freq -a Amt ] | [ -p ] | [ -l ] } [ -V ] ArrayID

      amutil -?

 DESCRIPTION
      amutil controls a variety of management operations on the disk array
      identified by ArrayID.  Locating hardware components and managing the
      rebuild process are done using amutil.

      The ArrayID used to address the disk array can be the disk array
      serial number or name, if one has been assigned to the disk array.

    Identifying Disk Modules
      Disk modules are identified within Array Manager 60 using a numbered
      pair of the form n:n.  The first number identifies the SCSI channel
      (or bus) connecting the array controller to the enclosure containing
      the disk module.	The channel number is indicated on the back of the
      array controller enclosure.  The second number is the disk module SCSI
      ID.  The SCSI ID is determined by the slot in which the disk module is
      installed, but is not the same as the physical slot number (0-9).

      For example, the numbered pair 2:1 identifies the disk module on
      channel 2 with a SCSI ID of 1.  Refer to the Disk Array FC/60 User's
      Guide for more information on disk module addressing.

    Options
      amutil supports the following options:

	   -f channel:ID,channel:ID...
			  Flash the amber LED on the specified disks.  Each
			  disk is identified by channel:ID.  Channel:ID is
			  determined by the disk enclosure channel number
			  (1-6) and disk SCSI ID (0-4, 8-12).

	   -F		  Flash the amber LEDs on all the disks in the disk
			  array.

	   -l		  Flush server log file.  This will retrieve the
			  current log entries from the disk array
			  controller. The controller logs will be cleared.

	   -p		  Purge the oldest log file (delete the log file and
			  remove its entry from the log file catalog).
			  Always use this option to delete log files. Using
			  a system command such as rm to delete log files
			  will cause log catalog errors.



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 amutil(1M)							  amutil(1M)




	   -R LUN -f req -a Amt
			  Set the rebuild priority settings of the specified
			  LUN.	The freq value identifies the rate at which
			  the disk array attempts to execute rebuild
			  commands.  Specified in tenths of a second, this
			  value can be 1 to 30, or 0.1 seconds to 3.0
			  seconds.  A low setting increases the frequency at
			  which rebuild commands are issued, giving higher
			  priority to the rebuild but reducing I/O
			  performance.	A high value reduces the rebuild
			  command frequency, giving higher priority to host
			  I/Os.	 The default value for this setting is 1, or
			  0.1 seconds.

			  The Amt value identifies the number of blocks to
			  rebuild at a time.  This value can be from 1 to
			  64K and specifies the number of 512-byte blocks
			  processed during each rebuild command.  The higher
			  the setting the more blocks which will be
			  processed, thus reducing I/O performance.  A lower
			  setting gives priority to host I/Os, delaying the
			  completion of the rebuild.  The default value for
			  this setting is 64 blocks, or 32 Kbytes of data.

	   -s		  Stop flashing disk activity lights.  This option
			  is used to stop the flashing on all disks.

	   -V		  Verbose mode displays additional command
			  execution, state, and/or status messages.

	   -?		  Display extended usage message.  This option
			  overrides all others.

 SECURITY CONFIGURATION
      This command is modified for all security configurations.

    Security Behavior/Restrictions
      Use of this command is restricted to authorized users only.

    Command Authorizations
      This command requires the sysadmin authorization to successfully
      execute.

    Privileges
      The command has been modified to support least privilege. The
      potential privileges possessed by the command and their uses include:

      allowdacread	  This privilege is raised to provide discretionary
			  read access to the devices.





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 amutil(1M)							  amutil(1M)




      allowdacwrite	  This privilege is raised to provide discretionary
			  write access to the devices.

      allowmacread	  This privilege is raised to provide mandatory read
			  access to the devices.

      allowmacwrite	  This privilege is raised to provide mandatory
			  write access to the devices.

      filesysops	  This privilege is raised to allow the mknod(2)
			  system call to succeed.

      writeaudit	  The command generates its own audit records and
			  submits these directly to the system audit trail.
			  This privilege is raised whenever the command
			  needs to write an audit record.

 EXTERNAL INFLUENCES
    Environment Variables
      LC_MESSAGES determines the language in which messages are displayed.
      The current language settings can be checked with locale(1).

 RETURN VALUE
      amutil returns the following values:

	   0	Successful completion.
	   1	An error in execution (I/O, subsystem, security, etc.)
		occurred.
	   2	An error in command syntax occurred: for example, an unknown
		command line option was passed.
	   3	Timeout in communication to server.  May indicate the
		AM60Srvr is not running.

 DIAGNOSTICS
      The following messages can be generated by amutil:

      Usage: amutil {-f <&lt&lt&lt;Channel:ID>&gt&gt&gt;[,<&lt&lt&lt;Channel:ID>&gt&gt&gt;...] |
	   -F | -l | -s |
	   -R <&lt&lt&lt;LUN>&gt&gt&gt; -f <&lt&lt&lt;Freq>&gt&gt&gt; -a <&lt&lt&lt;Amt>&gt&gt&gt;}
	   [-V] <&lt&lt&lt;ArrayID>&gt&gt&gt;}

       amutil  -p [-V]

       Extended help: amutil -?
	   An error in command syntax has occurred.  Reenter the command
	   with all necessary arguments.

      amutil: Arg out of range
	   One of the arguments has exceeded its maximum or minimum size, or
	   is incorrect in form.  Check the size and form of each argument.




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 amutil(1M)							  amutil(1M)




      amutil: The <&lt&lt&lt;ArrayID>&gt&gt&gt; entered does not identify a known, supported
	   array
	   The specified ArrayID does not exist or does not identify a
	   device that is communicating with the system.  Verify the array
	   exists and is operational.

      amutil: The specified controller is not physically installed.
	   A controller-specific command was issued to a non-existent or
	   inaccessible controller.

      amutil: The specified LUN does not exist in this array.
	   The specified LUN does not exist.

      amutil: Error in command execution, <&lt&lt&lt;Additional Error Info>&gt&gt&gt;:
	   <&lt&lt&lt;Error Info Decode>&gt&gt&gt;
	   The command failed due to a device error, an internal error, or a
	   system error. The Additional Error Info and Error Info Decode
	   fields will hold specifics about the failure and its cause.

 EXAMPLES
      Flash the amber LEDs on all the disks in disk array RACK_51:

	   amutil -F RACK_51

      Stop flashing the amber LEDs on disk array RACK_51:

	   amutil -s RACK_51

      The following example alters the rebuild priority settings.  It
      assigns a value of 3 seconds to the rebuild command rate, and sets the
      data block amount to 16 blocks on LUN 4 on disk array RACK_51.  This
      gives host I/Os higher priority than the default settings.

	   amutil -R 4 -f 30 -a 16 RACK_51

 DEPENDENCIES
      AM60Srvr must be running to execute this command. See AM60Srvr(1M).

 AUTHOR
      amutil was developed by HP.

 SEE ALSO
      ammgr(1M), amcfg(1M), amdsp(1M), amlog(1M), AM60Srvr(1M).











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