Re: Repro blocks/offsets in multiple runs

[Daniel Buggie <danielabuggie@xxxxxxxxx>]

I haven't tried them myself, but perhaps the write_iolog and
read_iolog options would work for you in this case?

 write_iolog=str
              Write the issued I/O patterns to the specified file.
Specify a separate file for each job, otherwise the iologs will be
interspersed and the  file  may  be corrupt.

       read_iolog=str
              Replay the I/O patterns contained in the specified file
generated by write_iolog, or may be a blktrace binary file.

Daniel

On Fri, Mar 9, 2012 at 2:23 PM, Vikram Seth <seth.vik@xxxxxxxxx> wrote:
> Hi,
>
> I am looking for an option that enables fio to use same set of
> blocks/offsets across multiple runs of the test.
> This will be useful if I want am trying to fix a perf issue and want
> to rerun the test to verify the patch. For such cases an exact repro
> of the i/o pattern is important.
>
> Thanks,
> Vikram.
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