On Tue, Oct 19, 2021 at 06:24:34AM -0600, Jens Axboe wrote: > On 10/19/21 1:44 AM, Ming Lei wrote: > > On Mon, Oct 18, 2021 at 05:05:50PM +0200, Christoph Hellwig wrote: > >> On Mon, Oct 18, 2021 at 04:19:20PM +0200, Lennart Poettering wrote: > >>> A brief answer like "yes, please, enable by default" would already > >>> make me happy. > >> > >> I thikn enabling it by default is a good idea. The only good use > >> case I can think of for using buffered I/O is when the image has > >> a smaller block size than supported on the host file. > > > > Maybe we can enable it at default in kernel side, then fackback to > > buffered IO if DIO is failed. > > Yes I think that's sane, pure DIO probably isn't a great idea by > default. But if we have a sane fallback, then I do think it'd be the > best way to run it. So, I can wait for kernel rather than enable it by default in losetup/mount, right? :-) Karel -- Karel Zak <kzak@xxxxxxxxxx> http://karelzak.blogspot.com
