From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from terminus.zytor.com ([198.137.202.10]:57326 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735AbaEUAE5 (ORCPT ); Tue, 20 May 2014 20:04:57 -0400 Message-ID: <537BEDA1.2010900@zytor.com> Date: Tue, 20 May 2014 17:04:49 -0700 From: "H. Peter Anvin" MIME-Version: 1.0 To: Chris Mason , "linux-btrfs@vger.kernel.org" Subject: Re: Formalizing the use of Boot Area B References: <537403E3.6090902@zytor.com> <537BE54B.3060603@zytor.com> <537BE73F.7040307@fb.com> In-Reply-To: <537BE73F.7040307@fb.com> Content-Type: text/plain; charset=UTF-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 05/20/2014 04:37 PM, Chris Mason wrote: > > Hi Peter, > > We do leave the first 1MB of each device alone. Can we do 256K-1024K > for the boot loader? We don't have an immediate need for the extra > space, but I'd like to reserve a little more than the extra 64KB. > Incidentally, the current version of mkfs.btrfs actually leaves not 1 MB (1024K) but rather 1104K (64K+16K+1024K). Not sure if that is intentional. -hpa