From mboxrd@z Thu Jan 1 00:00:00 1970 From: keith.busch@intel.com (Keith Busch) Date: Tue, 14 Jul 2015 19:45:15 +0000 (UTC) Subject: Partitions and end-to-end protection In-Reply-To: References: <55A40881.5000108@ranbarg.com> <20150714180634.GB10203@infradead.org> <20150714184344.GA29437@infradead.org> Message-ID: On Tue, 14 Jul 2015, Martin K. Petersen wrote: >>>>>> "Keith" == Keith Busch writes: > > Keith> NVMe doesn't provide a way to disable transferring metadata > Keith> per-io. > > If you do a READ with PRACT=1 the PI should get stripped at the > controller. That was the intent, anyway. PRACT=1 strips/generates PI only for a subset of valid NVMe meta-data formats, so we need something for the others.