From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Heinz J . Mauelshagen" Subject: Re: [linux-lvm] using a read-only PV Message-Id: <20020222124936.A16932@sistina.com> References: <20020222102651.GA2134@zombie.inka.de> MIME-Version: 1.0 In-Reply-To: <20020222102651.GA2134@zombie.inka.de>; from edi@gmx.de on Fri, Feb 22, 2002 at 11:26:51AM +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: Fri Feb 22 05:52:02 2002 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com On Fri, Feb 22, 2002 at 11:26:51AM +0100, Eduard Bloch wrote: > Hello, > > is it possible to use a physical volume in read-only mode? "hdparm -r 1 PhysicalVolumePath" would set the device used as a PV to read-only mode (if supported), but that wouldn't allow LVM to work properly because it needs to write to *all* PVs on updates. > The idea is: > put a snapshot of the PV on a CDROM. Later, build a volume group, with > this read-only volume as the first volume in the snapshot mode, and an > additional volume on the harddisk where the differences are stored. > > Is a such scenario possible - or already useable? No. LVM needs to be enhanced to support what you want. > > Gruss/Regards, > Eduard. > -- > The UNIX Guru's view of Sex: > unzip ; strip ; touch ; finger ; mount ; fsck ; more ; yes ; umount ; > sleep [Hauke Heidtmann in dcoud] > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html -- Regards, Heinz -- The LVM Guy -- *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Sistina Software Inc. Senior Consultant/Developer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@Sistina.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-