From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38568) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFb7n-0000zT-IO for qemu-devel@nongnu.org; Wed, 22 Jun 2016 01:54:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bFb7l-0002FE-MZ for qemu-devel@nongnu.org; Wed, 22 Jun 2016 01:54:54 -0400 Date: Wed, 22 Jun 2016 13:54:41 +0800 From: Fam Zheng Message-ID: <20160622055441.GB22636@ad.usersys.redhat.com> References: <1466465969-25315-1-git-send-email-eblake@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1466465969-25315-1-git-send-email-eblake@redhat.com> Subject: Re: [Qemu-devel] [PATCH 0/5] Auto-fragment large transactions at the block layer List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Eric Blake Cc: qemu-devel@nongnu.org, kwolf@redhat.com, qemu-block@nongnu.org On Mon, 06/20 17:39, Eric Blake wrote: > We have max_transfer documented in BlockLimits, but while we > honor it during pwrite_zeroes, we were blindly ignoring it > during pwritev and preadv, leading to multiple drivers having > to implement fragmentation themselves. This series moves > fragmentation to the block layer, then fixes the NBD driver to > use it; if you like this but it needs a v2, you can request that > I further do other drivers (I know at least iscsi and qcow2 do > some self-fragmenting and/or error reporting that can be > simplified by deferring fragmentation to the block layer). > > Prequisite: Kevin's block branch, plus my work on byte-based > block limits (v2 at the moment): > https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg04006.html > > Also available as a tag at: > git fetch git://repo.or.cz/qemu/ericb.git nbd-fragment-v1 Patches 1-6: Reviewed-by: Fam Zheng