Sometimes you want an easy way to simulate load on a file-system that you are trying to test. Here’s a quick and easy way.
Suppose your mount point you want to perform this IO is “/myspecialmount”. (Assuming you have plenty of space to test)
Then the easiest way to load some IO is through the following bash-script:
[sourcecode language=“bash”] #!/bin/bash
while true do echo “=== Starting clean-up ====” rm -fr /myspecialmount/usr echo “=== Starting load ====” rsync -avp /usr /myspecialmount done [/sourcecode]
In the above code sample, Line-6 - cleans up the filesystem sub-folder “/myspecialmount/usr”. The options “-fr” allows you to perform the clean-up recursively with a force option. And in Line-8, we synchronize the systems “/usr” folder and files onto “/myspecialmount/usr”. And these two steps are done on an infinite-loop.
Please note that this is not a true load-testing where you have parallel-simultaneous IO requests being sent to a filesystem but rather a simple way to create some load.
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