From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from plane.gmane.org ([80.91.229.3]:46929 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751391AbbL0HKM (ORCPT ); Sun, 27 Dec 2015 02:10:12 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1aD5Sx-0005Au-Lv for linux-btrfs@vger.kernel.org; Sun, 27 Dec 2015 08:10:07 +0100 Received: from ip98-167-165-199.ph.ph.cox.net ([98.167.165.199]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 27 Dec 2015 08:10:07 +0100 Received: from 1i5t5.duncan by ip98-167-165-199.ph.ph.cox.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 27 Dec 2015 08:10:07 +0100 To: linux-btrfs@vger.kernel.org From: Duncan <1i5t5.duncan@cox.net> Subject: Re: [PATCH] improve documentation of snapshot unaware defrag Date: Sun, 27 Dec 2015 07:09:41 +0000 (UTC) Message-ID: References: <1451185407-11422-1-git-send-email-mail@christoph.anton.mitterer.name> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Christoph Anton Mitterer posted on Sun, 27 Dec 2015 04:03:27 +0100 as excerpted: [Rewrapped here but all added lines.] > +WARNING: Defragmenting with Linux kernel versions < 3.9 or ≥ 3.14-rc2 > as well as > +with Linux stable kernel versions ≥ 3.10.31, ≥ 3.12.12 or ≥ > 3.13.4 will break up > +the ref-links of CoW data (for example files copied with > `cp --reflink`, > +snapshots or de-duplicated data). > +This may cause considerable increase of space usage depending on the > broken up +ref-links. Thanks. I had looked at that a few times and thought it needed updated, but I think it hadn't reached my pain threshold yet[1], so I hadn't yet posted about it. Glad it reached someone's pain threshold. =:^) --- [1] Pain threshold: Or more like, I was always doing something else at the time, which is probably everybody else's excuse too. But by contrast it can be noted that I posted right away when I noticed the mkfs.btrfs manpage totally lost raid1 mode with one update, because I use it, regardless of what else I was doing. I guess that must have hit my pain threshold... -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman