From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44118) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XHIVl-0001jX-C5 for qemu-devel@nongnu.org; Tue, 12 Aug 2014 16:17:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XHITE-0000O3-Fk for qemu-devel@nongnu.org; Tue, 12 Aug 2014 16:15:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42883) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XHITE-0000Nu-7q for qemu-devel@nongnu.org; Tue, 12 Aug 2014 16:15:00 -0400 Date: Tue, 12 Aug 2014 21:14:55 +0100 From: "Richard W.M. Jones" Message-ID: <20140812201455.GI14001@redhat.com> References: <20140812184630.GP8471@redhat.com> <20140812185207.GH14001@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] disk image: self-organized format or raw file List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Xingbo Wu Cc: qemu-devel@nongnu.org On Tue, Aug 12, 2014 at 03:23:38PM -0400, Xingbo Wu wrote: > would be very space efficient for distribution :). > Would you consider replace xz with lz4? it has faster decompression speed > (~500MB/s)[1] and client-side decompression would be made painless. No. The main benefit of xz is it has a well defined stable API and a file format that supports seeking. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html