From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:39734 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755568AbcIMVoS (ORCPT ); Tue, 13 Sep 2016 17:44:18 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CDA5E635DA for ; Tue, 13 Sep 2016 21:44:17 +0000 (UTC) Received: from Liberator.example.com (ovpn03.gateway.prod.ext.phx2.redhat.com [10.5.9.3]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u8DLiGdS010008 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 13 Sep 2016 17:44:17 -0400 To: "linux-btrfs@vger.kernel.org" From: Eric Sandeen Subject: mkfs+mount failure of small fs on ppc64 Message-ID: <2210b649-c379-106a-2de4-923a0ce55593@redhat.com> Date: Tue, 13 Sep 2016 16:44:15 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: on ppc64, 4.7-rc kernel, git btrfs-progs, v4.7.2: # truncate --size=500m testfile # ./mkfs.btrfs testfile # mkdir -p mnt # mount -o loop testfile mnt btrfs-progs v4.7.2 See http://btrfs.wiki.kernel.org for more information. Label: (null) UUID: c531b759-a491-4c9f-a954-4787cea9106d Node size: 65536 Sector size: 65536 Filesystem size: 500.00MiB Block group profiles: Data: single 8.00MiB Metadata: DUP 32.00MiB System: DUP 8.00MiB SSD detected: no Incompat features: extref, skinny-metadata Number of devices: 1 Devices: ID SIZE PATH 1 500.00MiB testfile # dmesg -c [ 61.210287] loop: module loaded [ 61.247105] BTRFS: device fsid a8d79cd0-977f-4b93-8410-246dc08b3683 devid 1 transid 5 /dev/loop0 [ 61.247391] BTRFS info (device loop0): disk space caching is enabled [ 61.247397] BTRFS info (device loop0): has skinny extents [ 61.270492] BTRFS info (device loop0): creating UUID tree [ 61.312149] BTRFS warning (device loop0): failed to create the UUID tree: -28 [ 61.483028] BTRFS: open_ctree failed 2nd mount works: # mount -o loop testfile mnt # dmesg -c [ 87.504564] BTRFS info (device loop0): disk space caching is enabled [ 87.504579] BTRFS info (device loop0): has skinny extents [ 87.506979] BTRFS info (device loop0): creating UUID tree Any ideas? This seems to have regressed since 3.9.1, but there are a couple other mkfs breakages in between, and my bisect was not fruitful. Thanks, -Eric