On 08/08/2012 03:10 PM, Holger Kiehl wrote:
Personally, I would think that TRIM support MD would be a very good thing.
That's one thing I am waiting for, too. We had to implement a somewhat clumsy user-space application which does the trick for us - but that is an ugly work-around, as it has to allocate most of the free space on a filesystem for at least a little while (to know what blocks it can discard). Without periodic discard runs, our SSD-equipped servers suffer a ~50% write performance penalty, so this feature is not just a cosmetic issue to us. Regards, Lutz Vieweg -- 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/