On Mon, Aug 23, 2010 at 04:01:15PM +0200, Jens Axboe wrote: > The problem purely exists on arrays that report write back cache enabled > AND don't implement SYNC_CACHE as a noop. Do any of them exist, or are > they purely urban legend? I haven't seen it. I don't care particularly about this case, but once it a while people want to disable flushing for testing or because they really don't care. What about adding a sysfs attribue to every request_queue that allows disabling the cache flushing feature? Compared to the barrier option this controls the feature at the right level and makes it available to everyone instead of beeing duplicated. After a while we can then simply ignore the barrier/nobarrier options. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
