On Wed, Jul 17, 2013 at 11:38:50PM +0200, Jan Kara wrote: > > It was running this.. > > https://github.com/kernelslacker/io-tests/blob/master/setup.sh > > in a loop. After about 6 hours, that fell out. It made it all the way > > through > > every test a few times, which is odd, as the test should be fairly > > deterministic. > > Ah, I wasn't capturing the fsx seed. I'll do that on the next run. > So inode 12 was likely the file used by fsx. OK. Looking at the script > link, fsx is run as: > /usr/local/bin/fsx -N 250000 -S0 foo & > so the seed is always 0. So it is a deterministic test and there must be > some race with writeback or something that is rarely triggered. Drat.
S0 is special. it means 'use timeofday as seed' Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/