crash vs. power drop

Posted Sep 11, 2009 11:40 UTC (Fri) by Cato (guest, #7643)
In reply to: crash vs. power drop by zmi
Parent article: POSIX v. reality: A position on O_PONIES

Thanks for explaining all that.

On the topic of writing 'half sectors' due to a power drop: the author of http://lwn.net/Articles/351521/ has done quite a lot of tests on various hard drives, and generally found that they usually don't do this, though some instances have done. He has a useful program that can test any drive for this behaviour, though it's mostly intended to test for out of order writes due to caching - I believe only some drives lie about this.