From mboxrd@z Thu Jan  1 00:00:00 1970
From: Douglas McClendon <dmc.lists@filteredperception.org>
Subject: Re: DM_snapshot_cow filesystem (dmsetup create snapshot)
Date: Thu, 01 Dec 2011 14:21:56 -0600
Message-ID: <4ED7E1E4.1000603@filteredperception.org>
References: <4EABE131.8010706@googlemail.com>	<20111029204947.GU23336@agk-dp.fab.redhat.com>	<CAEcBt+Ux+GVmm7zBeFA7k5PHOQoSKLTKcifB95ne5dBtX400dQ@mail.gmail.com>	<4ED2DF0F.1070108@filteredperception.org>	<CAEcBt+UEJXSY7oK+j0gw9fkzjnWOUcBFhPdXCVFe3HZNh6zOTw@mail.gmail.com>	<4ED59040.50406@filteredperception.org>	<CAEcBt+XxVh8b=TJu-Z+3XBL=K6LUhs2QZyeZKGMGh_Lp+UBGbA@mail.gmail.com>	<20111130220259.GA7595@agk-dp.fab.redhat.com>	<4ED6BD81.4090609@filteredperception.org>
	<20111201141236.GB7595@agk-dp.fab.redhat.com>
Reply-To: device-mapper development <dm-devel@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Content-Transfer-Encoding: 7bit
Return-path: <dm-devel-bounces@redhat.com>
In-Reply-To: <20111201141236.GB7595@agk-dp.fab.redhat.com>
List-Unsubscribe: <https://www.redhat.com/mailman/options/dm-devel>,
	<mailto:dm-devel-request@redhat.com?subject=unsubscribe>
List-Archive: <https://www.redhat.com/archives/dm-devel>
List-Post: <mailto:dm-devel@redhat.com>
List-Help: <mailto:dm-devel-request@redhat.com?subject=help>
List-Subscribe: <https://www.redhat.com/mailman/listinfo/dm-devel>,
	<mailto:dm-devel-request@redhat.com?subject=subscribe>
Sender: dm-devel-bounces@redhat.com
Errors-To: dm-devel-bounces@redhat.com
To: dm-devel@redhat.com
List-Id: dm-devel.ids

correction- "go read-write-rootfs' below should have been "go 
read-only-rootfs"

-dmc

--------

I admit that would indeed solve the present use case of keeping the 
overlay device functionally usable.  In fact, going with a brutal 
virtual-plug-pulling halt triggered by snapshot full would be fine. 
Though I'd rather at that instant have the system go read-write-rootfs 
so that I can still poke around somewhat, rather than the screen go black.