From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from magic.merlins.org ([209.81.13.136]:33974 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932234AbeGCOi4 (ORCPT ); Tue, 3 Jul 2018 10:38:56 -0400 Date: Tue, 3 Jul 2018 07:38:51 -0700 From: Marc MERLIN To: Qu Wenruo Cc: Chris Murphy , Su Yue , Btrfs BTRFS Subject: Re: So, does btrfs check lowmem take days? weeks? Message-ID: <20180703143851.GK5567@merlins.org> References: <20180629064354.kbaepro5ccmm6lkn@merlins.org> <20180701232202.vehg7amgyvz3hpxc@merlins.org> <5a603d3d-620b-6cb3-106c-9d38e3ca6d02@cn.fujitsu.com> <20180702032259.GD5567@merlins.org> <9fbd4b39-fa75-4c30-eea8-e789fd3e4dd5@cn.fujitsu.com> <20180702140527.wfbq5jenm67fvvjg@merlins.org> <3728d88c-29c1-332b-b698-31a0b3d36e2b@gmx.com> <20180703042241.GI5567@merlins.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Jul 03, 2018 at 04:50:48PM +0800, Qu Wenruo wrote: > > It sounds like there may not be a fix to this problem with the filesystem's > > design, outside of "do not get there, or else". > > It would even be useful for btrfs tools to start computing heuristics and > > output warnings like "you have more than 100 snapshots on this filesystem, > > this is not recommended, please read http://url/" > > This looks pretty doable, but maybe it's better to add some warning at > btrfs progs (both "subvolume snapshot" and "receive"). This is what I meant to say, correct. Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/