On 8/12/07, Hao Song <[EMAIL PROTECTED]> wrote:
> Hi,
> I am trying to use blktrace (mentioned in the documentation for
> CONFIG_BLK_DEV_IO_TRACE) to collect some disk I/O statistics.
> It works at first, but every time I kill it with Ctrl-C and then try to
> restart it, the program aborts with the message
>
> BLKTRACESETUP: No such file or directory
> Failed to start trace on /dev/hda
>
> my exact sequence of commands is this
> $ sudo blktrace -d /dev/hda -o - | blkparse -i - | tee trace-log
> (some output...)
>  (Ctrl-C)
> $ sudo blktrace -d /dev/hda -o - | blkparse -i - | tee trace-log2
> (abort...)
>
> I 'git clone' the blktrace source code from
> git://git.kernel.dk/blktrace.git and compiled it on my
> machine, the last 'git log' item is like this
> commit 2885ecaa19a04ab9980896d1a849cdae9238b7d1
> Author: Vincent Legoll <[EMAIL PROTECTED]>
> Date:    Mon Jul 30 15:23:43 2007 +0200
> ...
>
> output from 'blktrace --version'
> blktrace version 0.99.2
>
> I think this will be enough for you to identify my  blktrace  version.
>
> any idea about this problem?
>


Hi Hao,

take a look at
https://secure.engr.oregonstate.edu/wiki/CS411/index.php/Blktrace_Guide
at  Bug Alert!

        -Javi

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