From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from resqmta-ch2-03v.sys.comcast.net ([69.252.207.35]:50716 "EHLO resqmta-ch2-03v.sys.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751407AbaK2BZc (ORCPT ); Fri, 28 Nov 2014 20:25:32 -0500 Message-ID: <54792084.6060404@pobox.com> Date: Fri, 28 Nov 2014 17:25:24 -0800 From: Robert White MIME-Version: 1.0 To: kreijack@inwind.it, Zygo Blaxell CC: linux-btrfs Subject: Re: BTRFS messes up snapshot LV with origin References: <2A57F99C-80AA-4FD4-AA41-57F02AD4E1A2@colorremedies.com> <546CB531.2060509@ubuntu.com> <20141121042814.GR17395@hungrycats.org> <5470C92E.1070607@inwind.it> <20141123001927.GO17380@hungrycats.org> <5474AF87.6090702@inwind.it> <20141125202948.GP17380@hungrycats.org> <5474FBD9.5070709@inwind.it> <20141125222126.GQ17380@hungrycats.org> <54760B89.3050604@inwind.it> <20141127041510.GV17380@hungrycats.org> <5478AB6C.7030809@inwind.it> In-Reply-To: <5478AB6C.7030809@inwind.it> Content-Type: text/plain; charset=windows-1252; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 11/28/2014 09:05 AM, Goffredo Baroncelli wrote: > For the disk autodetection, I still convinced that it is a "sane" default > to skip the lvm-snapshot No... please don't... Maybe offer an option to select between snapshots or no-snapshots but in much the same way there is no _functional_ difference between a subvolume and a snapshot in btrfs, there is no "degenerate" status to an LVM snapshot. It would be way more useful if the helper dumped a message via stderr or syslog that said something like "UUID=xxxxxxxx ambiguous, must select between /dev/AA and /dev/BB using device= to mount filesystem."