From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.virtall.com ([178.63.195.102]:50727 "EHLO mail.virtall.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750998AbaAOLCM (ORCPT ); Wed, 15 Jan 2014 06:02:12 -0500 Received: from mail.virtall.com (localhost [127.0.0.1]) by mail.virtall.com (Postfix) with ESMTP id 5A67A385E91 for ; Wed, 15 Jan 2014 11:55:45 +0100 (CET) Received: from localhost (aegq142.neoplus.adsl.tpnet.pl [79.186.172.142]) by mail.virtall.com (Postfix) with ESMTPSA id 1D817385C38 for ; Wed, 15 Jan 2014 11:55:45 +0100 (CET) Date: Wed, 15 Jan 2014 11:55:43 +0100 From: Tomasz Chmielewski To: "linux-btrfs@vger.kernel.org" Subject: why am I getting "No space left on device" here? Message-ID: <20140115115543.790adafb@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-btrfs-owner@vger.kernel.org List-ID: I'm no longer able to write to this btrfs filesystem: # df -h /home Filesystem Size Used Avail Use% Mounted on /dev/sdb4 5.2T 3.6T 1.6T 71% /home # btrfs fi show /home Label: crawler-btrfs uuid: 60f1759c-45f6-4484-9f60-66a4e9bbf2b6 Total devices 2 FS bytes used 1.80TiB devid 3 size 2.56TiB used 1.80TiB path /dev/sdb4 devid 4 size 2.56TiB used 1.80TiB path /dev/sda4 Btrfs v3.12 # btrfs filesystem df /home Data, RAID1: total=1.75TiB, used=1.75TiB System, RAID1: total=32.00MiB, used=268.00KiB Metadata, RAID1: total=53.00GiB, used=51.71GiB However: # dd if=/dev/urandom of=bigfile dd: writing to `bigfile': No space left on device 186+0 records in 185+0 records out 94720 bytes (95 kB) copied, 0.0144045 s, 6.6 MB/s I don't understand why - can anyone explain? -- Tomasz Chmielewski http://wpkg.org