From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rin.romanrm.net ([91.121.86.59]:41330 "EHLO rin.romanrm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753040AbeGBRdL (ORCPT ); Mon, 2 Jul 2018 13:33:11 -0400 Date: Mon, 2 Jul 2018 22:33:09 +0500 From: Roman Mamedov To: Marc MERLIN Cc: linux-btrfs@vger.kernel.org Subject: Re: So, does btrfs check lowmem take days? weeks? Message-ID: <20180702223309.582f4e19@natsu> In-Reply-To: <20180702151903.j3j522urrtyznylf@merlins.org> References: <02ba7ad4-b618-85f0-a99f-c43b25d367de@cn.fujitsu.com> <20180629061001.kkmgvdgqfhz23kll@merlins.org> <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> <20180702151903.j3j522urrtyznylf@merlins.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Mon, 2 Jul 2018 08:19:03 -0700 Marc MERLIN wrote: > I actually have fewer snapshots than this per filesystem, but I backup > more than 10 filesystems. > If I used as many snapshots as you recommend, that would already be 230 > snapshots for 10 filesystems :) (...once again me with my rsync :) If you didn't use send/receive, you wouldn't be required to keep a separate snapshot trail per filesystem backed up, one trail of snapshots for the entire backup server would be enough. Rsync everything to subdirs within one subvolume, then do timed or event-based snapshots of it. You only need more than one trail if you want different retention policies for different datasets (e.g. in my case I have 91 and 31 days). -- With respect, Roman