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.
--
Jens Axboe
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