how to set up guaranteed io with XFS?

StackOverflow https://stackoverflow.com/questions/12169286

  •  29-06-2021
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Question

According to wikipedia XFS is capable to guarantee the rate of IO. How can I setup this under Linux (more specifically Centos 5.5)? Or does that only apply for IRIX?

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Solution

Quoting Dave Chinner: 

   Linux doesn't support GRIO. It's an Irix only thing, and that
    required special hardware support for bandwidth reservation, special
    frame schedulers in the IO path, etc.
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