blktrace debugging: how to use it

blktrace debugging: how to use it

[Peter Teoh]

The is patch is to enable blktrace debugging in the kernel:

http://lkml.org/lkml/2006/8/1/405

Can anyone provide any guidelines or references on how to use this 
feature from userspace?   Any tools written to TEST and use this feature?

Thanks.

Re: blktrace debugging: how to use it

[Mulyadi Santosa]

Hi..

On Mon, Mar 31, 2008 at 8:42 AM, Peter Teoh <htmldeveloper@gmail.com> wrote:
> The is patch is to enable blktrace debugging in the kernel:
>
>  http://lkml.org/lkml/2006/8/1/405
>
>  Can anyone provide any guidelines or references on how to use this
>  feature from userspace?   Any tools written to TEST and use this feature?

All I remember, the user space code is available from Jens Axboe's CVS
or http://www.kernel.org/pub/linux/kernel/people/axboe/tools/blktrace.c

regards,

Mulyadi

Re: blktrace debugging: how to use it

[Peter Teoh]

On Mon, Mar 31, 2008 at 12:41 PM, Mulyadi Santosa
<mulyadi.santosa@gmail.com> wrote:
> Hi..
>  All I remember, the user space code is available from Jens Axboe's CVS
>  or http://www.kernel.org/pub/linux/kernel/people/axboe/tools/blktrace.c
>
Thanks Mulyadi Santosa, the link I found was:

http://www.kernel.org/pub/linux/kernel/people/axboe/tools/old/blktrace.c

(Jens may have change it immediately u sent out the email :-)).

-- 
Regards,
Peter Teoh

Re: blktrace debugging: how to use it

[Mulyadi Santosa]

Hi :)

On Mon, Mar 31, 2008 at 10:30 PM, Peter Teoh <htmldeveloper@gmail.com> wrote:
> On Mon, Mar 31, 2008 at 12:41 PM, Mulyadi Santosa
>  <mulyadi.santosa@gmail.com> wrote:
>  > Hi..
>
> >  All I remember, the user space code is available from Jens Axboe's CVS
>  >  or http://www.kernel.org/pub/linux/kernel/people/axboe/tools/blktrace.c
>  >
>  Thanks Mulyadi Santosa, the link I found was:
>
>  http://www.kernel.org/pub/linux/kernel/people/axboe/tools/old/blktrace.c
>
>  (Jens may have change it immediately u sent out the email :-)).

Somehow in the universe, we are linked to each other :D

regards,

Mulyadi.

Re: blktrace debugging: how to use it

[Jens Axboe]

On Mon, Mar 31 2008, Peter Teoh wrote:
> The is patch is to enable blktrace debugging in the kernel:
> 
> http://lkml.org/lkml/2006/8/1/405
> 
> Can anyone provide any guidelines or references on how to use this 
> feature from userspace?   Any tools written to TEST and use this feature?

Just git clone the repo:

git://git.kernel.dk/blktrace.git

(which is mentioned in the Kconfig help entry for that kernel config
option)

or grab the latest snapshot here:

http://brick.kernel.dk/snaps/blktrace-git-latest.tar.gz

it comes with documentation and man pages (mostly thanks to others than
myself :-) and also a nifty btt tool that can do lots of things that
blkparse cannot.

-- 
Jens Axboe