amutil(1M) amutil(1M)
NAME [Toc] [Back]
amutil - controls various disk array management functions
SYNOPSIS [Toc] [Back]
amutil { [ -f channel:ID,channel:ID... ] | [ -F ] | [ -s ] |
[ -R LUN -f Freq -a Amt ] | [ -p ] | [ -l ] }
[ -V ] ArrayID
amutil -?
DESCRIPTION [Toc] [Back]
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 [Toc] [Back]
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 [Toc] [Back]
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
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will cause log catalog errors.
-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 50, or 0.1 seconds to 5.0
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 [Toc] [Back]
This command is modified for all security configurations.
Security Behavior/Restrictions
Use of this command is restricted to authorized users only.
Command Authorizations [Toc] [Back]
This command requires the sysadmin authorization to successfully
execute.
Privileges [Toc] [Back]
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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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 [Toc] [Back]
Environment Variables
LC_MESSAGES determines the language in which messages are displayed.
The current language settings can be checked with locale(1).
RETURN VALUE [Toc] [Back]
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 [Toc] [Back]
The following messages can be generated by amutil:
Usage: amutil {-f <Channel:ID>[,<Channel:ID>...] |
-F | -l | -s |
-R <LUN> -f <Freq> -a <Amt>}
[-V] <ArrayID>}
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: The <ArrayID> 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, <Additional Error Info>:
<Error Info Decode>
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 [Toc] [Back]
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 5 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 50 -a 16 RACK_51
DEPENDENCIES [Toc] [Back]
AM60Srvr must be running to execute this command. See AM60Srvr(1M).
AUTHOR [Toc] [Back]
amutil was developed by HP.
SEE ALSO [Toc] [Back]
ammgr(1M), amcfg(1M), amdsp(1M), amlog(1M), AM60Srvr(1M).
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