Re: Using fio with blkread data, example needed

From: Joshua Root <>
Date: Mon, 03 Dec 2007 06:37:20 +1100

John Rouillard wrote:
> I am planning on using fio to simulte a disk load on some diskless
> clients that will be using NFS rather then local disk as their data
> source/sink.
> I have run blktrace on a system with local disks that is currently
> running the worload of interest. I have the files:
> sda1.blktrace.0 sda1.blktrace.1 sda1.blktrace.2 sda1.blktrace.3
> (4 cpu system), but I am not quite sure what to use for an fio job
> file. Does anybody have any examples I could work from?

All fio can really do with your trace is replay it against a block
device. It sounds like you really want to record what's happening at the
filesystem level rather than the block I/O level.

Joshua Root,  jmr AT
Received on Sun Dec 02 2007 - 20:37:20 CET

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