On 02/27/2015 06:19 PM, Georgios Koloventzos wrote:
Hello, I am running fio to test some virtual machines of mine and I am having some difficulties. So my question as it is written on the subject. What exactly are the output of the --debug=diskutil command? I have seen the code of diskutil.c but I will like a bit more explanatory answer.
As the option hints at, it's just debug output. Mostly deals with how it resolves md/dm devices to the underlying devices, and so forth. So not sure there's that much interesting there to you, unless you are trying to debug a problem with it.
In general, fio figures out what devices to monitor, and then continually opens the stat files and collects the appropriate information every 250msecs.
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