From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from magic.merlins.org ([209.81.13.136]:48065 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754530AbcBWRfP (ORCPT ); Tue, 23 Feb 2016 12:35:15 -0500 Date: Tue, 23 Feb 2016 09:34:44 -0800 From: Marc MERLIN To: Duncan <1i5t5.duncan@cox.net>, Nazar Mokrynskyi , Alexander Fougner Cc: linux-btrfs@vger.kernel.org Message-ID: <20160223173444.GJ22487@merlins.org> References: <04df0eaf-9dc8-b9fa-05cb-020507940bed@mokrynskyi.com> <20160223172635.GI22487@merlins.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20160223172635.GI22487@merlins.org> Subject: Re: Major HDD performance degradation on btrfs receive Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Feb 23, 2016 at 09:26:35AM -0800, Marc MERLIN wrote: > Label: 'dshelf2' uuid: d4a51178-c1e6-4219-95ab-5c5864695bfd > Total devices 1 FS bytes used 4.25TiB > devid 1 size 7.28TiB used 4.44TiB path /dev/mapper/dshelf2 > > btrfs fi df /mnt/btrfs_pool2/ > Data, single: total=4.29TiB, used=4.18TiB > System, DUP: total=64.00MiB, used=512.00KiB > Metadata, DUP: total=77.50GiB, used=73.31GiB > GlobalReserve, single: total=512.00MiB, used=31.22MiB > > Currently, it's btrfs on top of dmcrpyt on top of swraid5 Sorry, I forgot to give the mount options: /dev/mapper/dshelf2 on /mnt/dshelf2/backup type btrfs (rw,noatime,compress=lzo,space_cache,skip_balance,subvolid=257,subvol=/backup) 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/ | PGP 1024R/763BE901