From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-18-i2.italiaonline.it ([212.48.25.198]:50660 "EHLO smtp-18.italiaonline.it" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933151AbaLJVCV (ORCPT ); Wed, 10 Dec 2014 16:02:21 -0500 Message-ID: <5488B526.1070102@inwind.it> Date: Wed, 10 Dec 2014 22:03:34 +0100 From: Goffredo Baroncelli Reply-To: kreijack@inwind.it MIME-Version: 1.0 To: Robert White CC: Duncan <1i5t5.duncan@cox.net>, linux-btrfs@vger.kernel.org Subject: Re: [PATCH] Btrfs: get more accurate output in fd command. References: <1418124037-8210-1-git-send-email-yangds.fnst@cn.fujitsu.com> <548743CE.1020403@inwind.it> <54879CFE.1090909@cn.fujitsu.com> <54882634.4000809@pobox.com> <5488AEBD.7030601@pobox.com> In-Reply-To: <5488AEBD.7030601@pobox.com> Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 12/10/2014 09:36 PM, Robert White wrote: [...] > I tested it and sure enough, it's RAID1... > > I also noticed that the default for data goes from single to RAID0 in > a two slice build. > > I generally don't expect defaults to change in undocumented ways. > Particularly since that makes make-plus-add orthogonal to > make-as-multi. > > Without other guidance I'd been assuming that > > mkfs.btrfs d1 d2 d3 ... > --vs-- > mkfs.btrfs d1 > btrfs dev add d2 > btrfs dev add d3 ... > > would net the same resultant system. I have only ever done the latter > until today. > > Does/Will the defaults change when three, four, or more slices are > used to build the system? > > I'll take a stab at updating the manual page. Why not printing from mkfs.btrfs the raid profiles used ? > > -- Rob. > > > -- To unsubscribe from this list: send the line "unsubscribe > linux-btrfs" in the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- gpg @keyserver.linux.it: Goffredo Baroncelli Key fingerprint BBF5 1610 0B64 DAC6 5F7D 17B2 0EDA 9B37 8B82 E0B5