HP StorageWorks Scalable File Share User Manual
Page 149
Verifying the system
6–19
Speed for read to /dev/hpls/dev8a: 152 MB/s
Cleaning up test space
Resetting lun features for /dev/hpls/dev7a...
Resetting lun features for /dev/hpls/dev8a...
•
To run the command in parallel mode, enter the command using the following syntax,
where
lun_device
is the name of a device name to be tested. Run the command from the
administration server:
/usr/opt/hpls/diags/bin/raw_lun_check.bash
--lun "lun_device [lun_device ...]" --parallel
When the command finishes, the speed at which it wrote to and read from each device that
it tested is displayed, as shown in the following example:
# ssh south6 /usr/opt/hpls/diags/bin/raw_lun_check.bash -lun "/dev/hpls/
dev7a /dev/hpls/dev8a" -parallel
Checking for mirror components in database
Checking lun status...
Checking lun status...
Starting lun test
Speed for write to /dev/hpls/dev7a /dev/hpls/dev8a: 118 MB/s
Speed for read to /dev/hpls/dev7a /dev/hpls/dev8a: 185 MB/s
Cleaning up test space
Resetting lun features for /dev/hpls/dev7a...
Resetting lun features for /dev/hpls/dev8a...
c.
Compare the results of these tests with the expected performance details provided in
The syntax of the
raw_lun_check.bash
command is as follows:
raw_lun_check.bash [-h] | [-v] [-r -f] [-i binary] -l lun_device -s|-p
Where:
-h|--help
Displays help on the command.
-v|--verbose
Provides verbose output.
-i|--iozone binary
Specifies that a binary other than the default (
/usr/opt/hpls/
diags/iozone/bin/iozone
) is to be used. Use this option
only if there is a problem with the default binary.
-l|--lun lun_device
Specifies the device to be tested.
-r|--reformat
Specifies that the LUN is to be reformatted as an
ext3
file system
before being tested. You must use this option, and the
-f
option,
if the LUN that is to be examined has not yet been used in a file
system.
CAUTION:
When you reformat a LUN, all user data on the LUN is lost. Do not use the
-r
|
--reformat
option on LUNs that have been used in a file system.
NOTE:
When the
-r
|
--reformat
option is used with the
raw_lun_check.bash
command, the entire device is reformatted to prepare it for testing, and the
raw_lun_check.bash
command will take some time to complete.
-f --force
Specifies that the LUN is to be reformatted even if this results in
data being lost. You must use this option, with the
-r
option, if the
LUN that is to be examined has not yet been used in a file system.
-s --serial
Specifies that the test is to be run in serial mode.
-p --parallel
Specifies that the test is to be run in parallel mode.