Service manual

3-56 AlphaServer GS80/160/320 Service Manual
Table 3– 11 Exer Options
-sb start_block
Specifies the starting block number (hex). The default is 0.
-eb end_block
Specifies the ending block number (hex). The default is 0.
-p pass_count
Specifies the number of passes. If 0, then run forever or
until Ctrl/C. The default is 1.
-l blocks
Specifies the number of blocks (hex) to exercise. The option
l has precedence over eb. If only reading, then not using
either – l or – eb defaults to read until end-of-file. If writing,
and neither – l nor – eb are specified, then exer will write
for the size of device. The default for blocks is 1.
-bs block_size
Specifies the block size (hex) in bytes. The default is 200.
-bc blocks_per_io
Specifies the number of blocks (hex) for each I/O operation.
On devices without length (tape), use the specified pack
size or default to 2048. The maximum block size allowed
with variable-length block reads is 2048. Default is 1.
-d1 buf1_string
String argument for eval to generate buffer1 data pattern
from. Buffer1 is initialized only once before any I/O occurs.
Default = all bytes set to hex 5a’s.
-d2 buf2_string
Same as – d1.
-a action_string
Specifies an exerciser action string that determines the
sequence of reads, writes, and compares to various buffers.
The default action string is ?r. Action string characters are:
r Read into buffer1
w Write from buffer1
R Read into buffer2
W Write from buffer2
n Write without lock from buffer1
N Write without lock from buffer2
c Compare buffer1 with buffer2