genfio: Use dynamic default values in help
To avoid mismatch between default values and help, let's print directly
the default value of the option.
diff --git a/tools/genfio b/tools/genfio
index 0bc24cb..512313a 100755
--- a/tools/genfio
+++ b/tools/genfio
@@ -50,18 +50,18 @@
one test after anoter but all disks at the same time
Enabled by default
-D iodepth : Run with the specified iodepth
- Default is 32
+ Default is $IODEPTH
-d disk1[,disk2,disk3,..] : Run the tests on the selected disks
Separated each disk with a comma
Disk name shall be "sdxx", /dev/ shall NOT be used here
-r seconds : Time in seconds per benchmark
0 means till the end of the device
- Default is 300 seconds
+ Default is $RUNTIME seconds
-b blocksize[,blocksize1, ...] : The blocksizes to test under fio format (4k, 1m, ...)
Separated each blocksize with a comma
- Default is 4k
+ Default is $BLOCK_SIZE
-m mode1,[mode2,mode3, ...] : Define the fio IO profile to use like read, write, randread, randwrite
- Default is "write,randwrite,read,randread"
+ Default is "$MODES"
-x prefix : Add a prefix to the fio filename
Useful to let a context associated with the file
If the prefix features a / (slash), prefix will be considered as a directory