On Monday 19 May 2008, Chris Mason wrote:

quoted

Here's a test workload that corrupts ext3 50% of the time on power fail
testing for me.  The machine in this test is my poor dell desktop (3ghz,
dual core, 2GB of ram), and the power controller is me walking over and
ripping the plug out the back.

Here's a new version that still gets about corruptions 50% of the time, but 
does it with fewer files by using longer file names (240 chars instead of 160 
chars).

I tested this one with a larger FS (40GB instead of 2GB) and larger log (128MB 
instead of 32MB).  barrier-test -s 32 -p 1500 was still able to get a 50% 
corruption rate on the larger FS.

  Hmm, this is worse than I'd have expected :( If it is that bad, I
think we should really enable them by default... I can give your script
a try on my test machine when I get back (which is next week).

								Honza
-- 
Jan Kara [off-list ref]
SuSE CR Labs