From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 2D98B7F47 for ; Tue, 25 Aug 2015 18:17:28 -0500 (CDT) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay1.corp.sgi.com (Postfix) with ESMTP id 1BFB68F8037 for ; Tue, 25 Aug 2015 16:17:25 -0700 (PDT) Received: from ipmail07.adl2.internode.on.net (ipmail07.adl2.internode.on.net [150.101.137.131]) by cuda.sgi.com with ESMTP id t7ydEAhDjk21AEzo for ; Tue, 25 Aug 2015 16:17:20 -0700 (PDT) Date: Wed, 26 Aug 2015 09:16:36 +1000 From: Dave Chinner Subject: Re: Cant mount xfs lvm. Experimental Features? Message-ID: <20150825231636.GL714@dastard> References: <8a6d5afa8829aec73d911f35815d7b92@zbfmail.de> <20150825115412.GI714@dastard> <5ab00519660fd5ed1b3d347658dba1f2@zbfmail.de> <55DCB158.20505@sandeen.net> <55DCF2F8.8010008@sandeen.net> <5576eb52ccfa8182ca150a99436be93c@zbfmail.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <5576eb52ccfa8182ca150a99436be93c@zbfmail.de> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: weber@zbfmail.de Cc: Xfs On Wed, Aug 26, 2015 at 01:02:58AM +0200, Marko Weber|8000 wrote: > Am 2015-08-26 00:58, schrieb Eric Sandeen: > >On 8/25/15 5:53 PM, Marko Weber|8000 wrote: > > > >>eric, > >>i rebootet the machine and created a new logical volume. > >>i formatted the lv with mkfs.xfs > >>i tried to mount it on the new kernel: > >> > >>Aug 26 00:47:17 backupserver kernel: XFS (dm-2): Version 5 > >>superblock detected. This kernel has EXPERIMENTAL support > >>enabled! > >>Aug 26 00:47:17 backupserver kernel: Use of these features in > >>this kernel is at your own risk! > >>Aug 26 00:47:17 backupserver kernel: XFS (dm-2): Superblock has > >>unknown read-only compatible features (0x1) enabled. > >>Aug 26 00:47:17 backupserver kernel: XFS (dm-2): Attempted to > >>mount read-only compatible filesystem read-write. > >>Aug 26 00:47:17 backupserver kernel: Filesystem can only be > >>safely mounted read only. > >>Aug 26 00:47:17 backupserver kernel: XFS (dm-2): SB validate > >>failed with error 22. > >l > >http://xfs.org/index.php/XFS_FAQ#Q:_What_information_should_I_include_when_reporting_a_problem.3F > >... > > > >>this happens with the newly created logical volume. > >> > >>the other 2 lvm partitions with xfs are fine. > >> > >>any idea? > > > >Without any actual information (i.e. kernel versions or userspace > >version), > >I'll have to assume that you have recent xfsprogs which sets some > >features by > >default which older kernels cannot understand. > > ok, what info do you need? > > on gentoo-linux: > > xfsprogs: v 3.2.4 (Useflag, nls readline) > kernel: 3.14.51 Kernel is too old for finobt=1, and really too old for CRCs to be enabled (not fully supported until 3.16). So, either: > >mkfs.xfs with -m crc=0,finobt=0 to turn off these features if you have > >an older kernel which > >doesn't understand them. or upgrade your kernel. Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs