From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47306) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X1YO5-0005XO-24 for qemu-devel@nongnu.org; Mon, 30 Jun 2014 06:00:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X1YNy-00070d-UE for qemu-devel@nongnu.org; Mon, 30 Jun 2014 06:00:36 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43695) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X1YNy-000700-MV for qemu-devel@nongnu.org; Mon, 30 Jun 2014 06:00:30 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s5UA0SqD031115 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Mon, 30 Jun 2014 06:00:29 -0400 Date: Mon, 30 Jun 2014 12:00:26 +0200 From: Kevin Wolf Message-ID: <20140630100026.GC4334@noname.str.redhat.com> References: <1402167080-20316-1-git-send-email-mreitz@redhat.com> <1402167080-20316-2-git-send-email-mreitz@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1402167080-20316-2-git-send-email-mreitz@redhat.com> Subject: Re: [Qemu-devel] [PATCH v8 01/14] qcow2: Allow "full" discard List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Max Reitz Cc: qemu-devel@nongnu.org, Stefan Hajnoczi Am 07.06.2014 um 20:51 hat Max Reitz geschrieben: > Normally, discarded sectors should read back as zero. However, there are > cases in which a sector (or rather cluster) should be discarded as if > they were never written in the first place, that is, reading them should > fall through to the backing file again. > > Signed-off-by: Max Reitz > Reviewed-by: Eric Blake Reviewed-by: Kevin Wolf