On 2015-12-14 10:58, Christoph Hellwig wrote: > On Mon, Dec 14, 2015 at 09:38:56AM +0100, Martin Steigerwald wrote: >> Is it safe to use XFS (or any other filesystem) on enterprise SSDs with Power >> Loss Protection (PLP), i.e. some capacitor to provide for enough electricity >> to write out all data in DRAM to flash after a power loss, with a reordering >> I/O scheduler like CFQ? > If the device does not need cache flushes it should not report requiring > flushes, in which case nobarrier will be a noop. OK - that would also mean that mounting with nobarrier should not make a performance difference. > Or to phrase it > differently: If nobarrier makes a difference skipping it is not safe. I do not fully understand that sentence, what do you mean by "makes a difference" and "skipping is not safe"? -Georg _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
