From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030229AbWFTLzy (ORCPT ); Tue, 20 Jun 2006 07:55:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030234AbWFTLzx (ORCPT ); Tue, 20 Jun 2006 07:55:53 -0400 Received: from p54AFEA14.dip.t-dialin.net ([84.175.234.20]:23942 "EHLO o.ww.redhat.com") by vger.kernel.org with ESMTP id S1030229AbWFTLzw (ORCPT ); Tue, 20 Jun 2006 07:55:52 -0400 Date: Tue, 20 Jun 2006 13:55:45 +0200 From: Heinz Mauelshagen To: CaT Cc: Heinz Mauelshagen , linux-kernel@vger.kernel.org, dm-devel@redhat.com Subject: Re: 2.6.16.20/dm: can't create more then one snapshot of an lv Message-ID: <20060620115545.GB4566@redhat.com> Reply-To: mauelshagen@redhat.com References: <20060619020040.GX2059@zip.com.au> <20060620005405.GY2059@zip.com.au> <20060620100209.GA4566@redhat.com> <20060620114613.GZ2059@zip.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060620114613.GZ2059@zip.com.au> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 20, 2006 at 09:46:13PM +1000, CaT wrote: > On Tue, Jun 20, 2006 at 12:02:09PM +0200, Heinz Mauelshagen wrote: > > How many snapshots active at once ? > > 1. I can start more then 1 premade snapshots just fine and use them > but the moment I add another one a freeze occurs. Well, that's fairly few ;) > > > I guess this is a kcopyd scalability issue which needs addressing. > > Well in the end I'm hoping to get at least 7. Hopefully that's not > insane. :) No, I was assuming, you were trying to activate plenty. FYI: the snapshot code in 2.6.17-rc has received a fair amount of fixes which might help this vs. 2.6.16.20. > > -- > "To the extent that we overreact, we proffer the terrorists the > greatest tribute." > - High Court Judge Michael Kirby -- Regards, Heinz -- The LVM Guy -- *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Red Hat GmbH Consulting Development Engineer Am Sonnenhang 11 Storage Development 56242 Marienrachdorf Germany Mauelshagen@RedHat.com PHONE +49 171 7803392 FAX +49 2626 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-