Re: [PATCH] check: add CLI option to repeat tests

[Dave Chinner <david@fromorbit.com>]

On Wed, Jul 08, 2020 at 10:15:18AM +0200, Lukas Czerner wrote:
> On Wed, Jul 08, 2020 at 03:35:13PM +1000, Dave Chinner wrote:
> > From: Dave Chinner <dchinner@redhat.com>
> > 
> > Frequently when trying to reproduce a problem I want to run a set of
> > specific tests in a loop, over and over again. I run fstests from a
> > set of run scripts that have non-trivial overhead (e.g. patterning
> > block devices before the runs start), so if all I want to do is run
> > the same test 100x, using a shell loop over the entire run
> > scripts reduces the iteration rate substantially.
> > 
> > Hence add an option to check to allow fstests to loop a number of
> > times over the configured test set without stopping.
> 
> Hi Dave,
> 
> this is useful as I am often doing the same. However what I am really
> missing is the ability to end the loop when a test fails and the ability
> to run tests in infinite loop (or until the test fails).

To run until a test set fails, I have just been using "-i 10000"
because if it passes 10000 loops, it isn't going to fail.. :)

Hence I didn't see a need to complicate things with a specific
"loop forever" options.

> It should be easy modification to make, what do you think ?

Feel free to add send a patch on top of this one to support that -
all of the failures I've been looking at with this have been "test
does not complete" failures, so it wasn't important to me.

As it is, right now I don't have time to feature creep simple
modifications like this into more complex functionality - I really
only sent this out because Willy mentioned on #xfs that he wished
there was a way to loop a test and I said "I've got a patch on my
local tree for that"....

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com