Compaq ES40CSLP, Инструкция по установке, использованию и обслуживанию

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Troubleshooting and Diagnostics
Compaq ES40CSLP Rackmount System Installation/User/Service Guide 6–29
6.6.2.6 exer
The exer command exercises one or more devices by performing specified read, write, and
compare operations.
•
A read operation reads from a device that you specify into a buffer.
•
A write operation writes from a buffer to a device that you specify.
•
A compare operation compares the contents of the two buffers.
The exer command uses two buffers to carry out the operations, buffer1 and buffer2. A read or
write operation can be performed using either buffer; a compare operation uses both buffers.
You can use options to specify the following:
•
An address range to test within the test device(s).
•
The packet size (or I/O size) which is the number of bytes read or written in one I/O
operation.
•
The number of passes to run.
•
How many seconds to run for a sequence of individual operations performed on the test
devices. The qualifier used to specify this is called the action string qualifier.
Syntax
Exer ([-sb <start_block>] [-eb <end_block>] [-p <pass_count>]
[-l <blocks>] [-bs <block_size>] [-bc <blocks_per_io>]
[-d1 <buf1_string>] [-d2 <buf2_string>] [-a <action_string>]
[-sec <seconds>] [-m] [-v] [-delay <milliseconds>] <device_name>…)
Arguments:
<device_name>… Specifies the names of the devices or filestreams to be exercised.
Options
-sb <start_block> Specifies the starting block number (hex) within filestream. The default is
0.
-eb <end_block> Specifies the ending block number (hex) within filestream. The default is 0
-p <pass_count> Specifies the number of passes to run the exerciser. If 0, then run
continuously or until Ctrl/C is pressed. The default is 1.
-l <blocks> Specifies the number of blocks (hex) to exercise. l has precedence over eb.
If only reading, then specifying neither l nor eb defaults to read until eof. If
writing, and neither l nor eb is specified, then exer writes for the size of the
device. The default is 1.
-bs <block_size> Specifies the block size (hex) in bytes. The default is 200 (hex).
-bc <block_per_io> Specifies the number of blocks (hex) per I/O. On devices without length
(tape), use the specified packet size or default to 2048. The maximum block
size allowed with variable length block reads is 2048. The default is 1.
-d1 <buf1_string> String arg for eval to gen buffer1 data pattern from buffer1 is initialized
only once and that is before any I/O occurs. Default = all bytes set to hex
5A’s.
-d2 <buf2_string> String arg for eval to gen buffer2 data pattern from buffer2 is initialized
only once and that is before any I/O occurs. Default = all bytes set to hex
5A’s.