From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id 7E6D07F37 for ; Thu, 3 Jul 2014 07:03:38 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay2.corp.sgi.com (Postfix) with ESMTP id 64566304066 for ; Thu, 3 Jul 2014 05:03:35 -0700 (PDT) Received: from userp1040.oracle.com (userp1040.oracle.com [156.151.31.81]) by cuda.sgi.com with ESMTP id 1lLRugag25DTurs4 (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO) for ; Thu, 03 Jul 2014 05:03:31 -0700 (PDT) Message-ID: <53B54779.40108@oracle.com> Date: Thu, 03 Jul 2014 20:07:21 +0800 From: Jeff Liu MIME-Version: 1.0 Subject: Re: Changing label of a mounted XFS filesystem References: <20140703112911.GA9806@citd.de> In-Reply-To: <20140703112911.GA9806@citd.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: Matthias Schniedermeyer Cc: xfs@oss.sgi.com Hi, On 07/03/2014 07:29 PM, Matthias Schniedermeyer wrote: > Hi > > > Is there a particular reason that the label of a mounted XFS fileystem > can't be changed? Maybe since we have no user request for this function? :) > The man-page of xfs_admin gives a blanket "Devices that are mounted > cannot be modified" but no explanation for why that is. > > In my case it's the label of the root-filesystem i want to change. So to > change it i would have to boot the computer with some kind of live or > rescure-system. Or i would need to temporarily connect the device to > another computer, both aren't really nice hoops to jump through just to > change a few characters. > > The only thing i can compare this to is ext2 and with ext2 (/boot > partition, so it really is ext2) i can change the label to my hearts > content, even the device is mounted. > > For my case i could live with it if i could remount the filesystem RO, > change the label and then having to reboot the machine, still nicer than > the other 2 options. Btrfs support set/change label on a mounted file system via ioctl(2), maybe we can implement it if that sounds useful to our users. Cheers, -Jeff _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs