From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alasdair G Kergon Subject: Re: How to force a snapshot status to valid when I know very well it's valid? Date: Fri, 21 Dec 2012 23:13:11 +0000 Message-ID: <20121221231311.GD14851@agk-dp.fab.redhat.com> References: Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Greg Stark Cc: device-mapper development List-Id: dm-devel.ids On Fri, Dec 21, 2012 at 10:54:21PM +0000, Greg Stark wrote: > took about 30 minutes. I don't know why or what happened there. But it Big snapshots take a long time to load - the whole cow area has to be scanned to generate the list of blocks represented on it. (Large thin snapshots don't have this shortcoming.) Alasdair