Dell EqualLogic PS6210XS EqualLogic Host Integration Tools for Linux Version 1 - Page 19

eqltune Command Syntax, Evaluating Output Information, Block Devices

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Parameter --mpio --asm --noninteractive --filename Abbr. none none -n -f Argument none none none filename Description Configures Multipath I/O component only Configures ASM/LE component only Runs the eqlconfig utility noninteractively and accepts all configuration defaults Specifies a configuration file name eqltune Command Syntax The command syntax is as follows: eqltune [command] [parameters] [--version] [ --help | -h] [--verbose | -v | -vv] [--quiet | -q] [check [--verbose | -v | -vv][--quiet | -q]] [fix [--verbose | -v][--quiet | -q]] [list [--verbose | -v][--quiet | -q]] The following table describes the eqltune utility's commands and parameters. Table 4. Eqltune Commands and Parameters Command n/a Abbr. none Parameter --version Description Optional. Shows version number and exits. n/a -h --help Optional. Shows the eqltune utility's options. n/a -v --verbose Optional. n/a -q --quiet Optional. check none -v | -vv | -q Default. Performs all eqltune verifications. Optionally, use with -v or -q flags. With no verbose flags, shows a summary of all settings. With one verbose flag (-v), shows all parameters as they are checked and displays relevant help text. With two verbose flags (-vv), shows all settings and all help text. fix none -v | -vv | -q Optional. Repairs any Critical issues identified by the utility. list none -v | -q Optional. Lists all parameters that the eqltune utility surveys but does not perform a verification. For verification, run check mode (check). With one verbose flag (-v), prints help text for each parameter. Evaluating Output Information As the eqltune utility executes, it verifies your installation in several categories. Block Devices The eqltune utility looks at every block device that corresponds to an iSCSI session on a PS Series array. Most settings examined by the eqltune utility only provide suggestions because the optimal values are dependent on the expected I/O load on the volume. The critical block device verification is the SCSI device timeout value. HIT/Linux configures the timeout value, based on the EqualLogic udev rules installed with HIT/Linux. Example rules are also provided in the installed udev file that demonstrate how to set other block device settings. Installing and Configuring HIT/Linux 19

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Parameter
Abbr.
Argument
Description
--mpio
none
none
Configures Multipath I/O component only
--asm
none
none
Configures ASM/LE component only
--noninteractive
-n
none
Runs the eqlconfig utility noninteractively and accepts all
configuration defaults
--filename
-f
filename
Specifies a configuration file name
eqltune Command Syntax
The command syntax is as follows:
eqltune [
command
] [
parameters
]
[--version]
[ --help
| -h]
[--verbose | -v | -vv]
[--quiet
| -q]
[check [--verbose | -v | -vv][--quiet | -q]]
[fix
[--verbose | -v][--quiet | -q]]
[list
[--verbose | -v][--quiet | -q]]
The following table describes the eqltune utility’s commands and parameters.
Table 4. Eqltune Commands and Parameters
Command
Abbr.
Parameter
Description
n/a
none
--version
Optional.
Shows version number and exits.
n/a
-h
--help
Optional.
Shows the eqltune utility’s options.
n/a
-v
--verbose
Optional.
n/a
-q
--quiet
Optional.
check
none
-v | -vv | -q
Default.
Performs all eqltune verifications. Optionally, use
with
-v
or
-q
flags. With no verbose flags, shows a
summary of all settings. With one verbose flag (
-v
),
shows all parameters as they are checked and displays
relevant help text. With two verbose flags
(-vv
), shows
all settings and all help text.
fix
none
-v | -vv | -q
Optional.
Repairs any Critical issues identified by the
utility.
list
none
-v | -q
Optional.
Lists all parameters that the eqltune utility
surveys but does not perform a verification. For
verification, run check mode (
check
). With one verbose
flag (
-v
), prints help text for each parameter.
Evaluating Output Information
As the eqltune utility executes, it verifies your installation in several categories.
Block Devices
The eqltune utility looks at every block device that corresponds to an iSCSI session on a PS Series array. Most settings examined by the
eqltune utility only provide suggestions because the optimal values are dependent on the expected I/O load on the volume. The critical
block device verification is the SCSI device timeout value. HIT/Linux configures the timeout value, based on the EqualLogic
udev
rules
installed with HIT/Linux. Example rules are also provided in the installed
udev
file that demonstrate how to set other block device
settings.
Installing and Configuring HIT/Linux
19