From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Dilger Subject: Re: [linux-lvm] error in mounitng snapshot LVs Message-Id: <20020206093734.D15496@lynx.turbolabs.com> References: <20011221084531.A22947@lsc.hu> <20020205233335.I2928@lynx.turbolabs.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: ; from ppons@cvf.fr on Wed, Feb 06, 2002 at 11:58:06AM +0100 Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Wed Feb 6 10:38:02 2002 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Pierrick PONS Cc: linux-lvm@sistina.com On Feb 06, 2002 11:58 +0100, Pierrick PONS wrote: > Andreas wrote: > > You need the "VFS-lock" patch, from the LVM CVS repository. > > I'm under 2.4.17, which patch do I have to get to use snapshot ? The > linux-2.4.11-VFS-lock.patch or linux-2.4.18-VFS-lock.patch ? Probably 2.4.11 is the right one. > Can I use whatever file system I want for snapshots ? Journaling filesystems need a special interface, but reiserfs, ext3, and XFS all support this interface. For non-journaled filesystems, it will just sync the device, but this is not 100% guaranteed to make the fs consistent. Also, when you mount an ext2 filesystem it will report the filesystem as dirty, but it will still mount, unlike ext3. Cheers, Andreas -- Andreas Dilger http://sourceforge.net/projects/ext2resize/ http://www-mddsp.enel.ucalgary.ca/People/adilger/