From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Heinz J . Mauelshagen" Subject: Re: [linux-lvm] Could vgscan read a file of "preferred" LV name -> minor device id ? Message-Id: <20020115150022.C11005@sistina.com> References: <20020111104116.GB1274@tykepenguin.com> MIME-Version: 1.0 In-Reply-To: <20020111104116.GB1274@tykepenguin.com>; from caulfield@sistina.com on Fri, Jan 11, 2002 at 10:41:16AM +0000 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: Tue Jan 15 08:03:02 2002 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com On Fri, Jan 11, 2002 at 10:41:16AM +0000, Patrick Caulfield wrote: > On Fri, Jan 11, 2002 at 07:11:00AM +0000, Piete Brooks wrote: > > I'm getting complaints from NFS users that when servers reboot, they often > > find that their mounts have the wrong data. I've never really worked out > > which end hold what in NFS FHs, but the basic idea is that a client identifies > > a FH which encodes (major dev id,minor dev id,inode number,version). > > This appears to break down when a new LV is created ane the server rebooted. > > As the /dev// nodes are numbered strictly in the order that they are > > discovered, all LV minor device IDs on subsequent VGs are renumbered, so any > > remote caching of FHs breaks (( as with SCSI )). > > > > Is that about right ? > > > > Would it be possible for vgscan to read a "hints" file consisting of / > > and minor device number pairs ? > > > > As each / is found, if it's in the file, the nominated minor device id > > is used; if it's not found, then the next minor device id which is not listed > > in the file is used. > > > > [[ I use devfs, so using existing data in /dev/ would not help -- but I think > > it would do no harm to use that data by default ]] > > > > I thought Heinz had fixed this in 1.0.1, what version are you using (tools & > kernel)? That's right. It is in since 1.0.1. > > patrick > > > _______________________________________________ > 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 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-