Re: [PATCH 7/8] xfstests: add a new test that runs fsstress under ENOSPC conditions

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Sat, Oct 29, 2011 at 04:48:16AM +0400, Dmitry Monakhov wrote:
> During stress testing we want to cover as much code paths as possible
> fsstress is very good for this purpose. But it has expandable nature
> (disk usage almost continually grow). So once it goes in no ENOSPC
> condition it will be where till the end. But by running 'dd' writers
> in parallel we can regularly trigger ENOSPC but only for a limited
> periods of time because each time it opens the same file with O_TRUNC.

This fails for me on XFS because the fsstress process has already
finished by the time you try to kill it:

--- 266.out     2011-11-02 19:46:27.000000000 +0000
+++ 266.out.bad 2011-11-02 19:48:33.000000000 +0000
@@ -3,3 +3,4 @@
 Run fsstress
  
 Run dd writers in parallel
+./266: line 60: kill: (3403) - No such process