Luca, I have already implemented a function, which does canonical PV names and aims to address this. Testing this in order to have it in the LVM 1.0.4 release. Regards, Heinz -- The LVM Guy -- On Tue, Mar 12, 2002 at 08:22:51PM +0100, Luca Berra wrote: > On Mon, Mar 11, 2002 at 04:29:53PM +0100, Heinz J . Mauelshagen wrote: > > > just tried using the long devfs names, as printed above and it works fine! > > > argggh. thats me being dumb. > > > > No, not really. > > Need to do something about it, so that LVM can cope with both dev pathes. > > > i had an idea some time back, but no time to code, > after an year i believe the idea is still sound, but never got around to try it > i'll repost part of the thread, volunteers??? > > L. > > -- > Luca Berra -- bluca@comedia.it > Communication Media & Services S.r.l. > /"\ > \ / ASCII RIBBON CAMPAIGN > X AGAINST HTML MAIL > / \ > Return-Path: <linux-lvm-admin@sistina.com> > Delivered-To: bluca@comedia.it > Received: from sistina.com (hermes.sistina.com [208.210.145.141]) > by colombina.comedia.it (Postfix) with SMTP id BEE91506D > for <bluca@comedia.it>; Tue, 13 Mar 2001 07:44:43 +0000 () > Received: (qmail 2563 invoked from network); 13 Mar 2001 07:41:08 -0000 > Received: from localhost (HELO hermes.sistina.com) (127.0.0.1) > by localhost with SMTP; 13 Mar 2001 07:41:08 -0000 > Delivered-To: linux-lvm@sistina.com > Received: (qmail 2440 invoked from network); 13 Mar 2001 07:40:04 -0000 > Received: from colombina.comedia.it (213.246.1.10) > by hermes.sistina.com with SMTP; 13 Mar 2001 07:40:04 -0000 > Received: by colombina.comedia.it (Postfix, from userid 506) > id 0695A508D; Tue, 13 Mar 2001 07:41:02 +0000 () > From: Luca Berra <bluca@comedia.it> > To: linux-lvm@sistina.com > Cc: lvm-devel@sistina.com > Subject: Re: [linux-lvm] Problem with vgscan/ vgcfgrestore > Message-ID: <20010313084102.A28227@colombina.comedia.it> > Mail-Followup-To: linux-lvm@sistina.com, lvm-devel@sistina.com > References: <GIEGKMCLIJBKBNBCCHEACEJACAAA.heimdall@mail.org> <200103130059.f2D0xsJ01176@webber.adilger.int> > Mime-Version: 1.0 > Content-Type: text/plain; charset=us-ascii > Content-Disposition: inline > User-Agent: Mutt/1.2.5i > In-Reply-To: <200103130059.f2D0xsJ01176@webber.adilger.int>; from adilger@turbolinux.com on Mon, Mar 12, 2001 at 05:59:54PM -0700 > X-Operating-System: Linux colombina.comedia.it 2.0.36 i586 > Sender: linux-lvm-admin@sistina.com > Errors-To: linux-lvm-admin@sistina.com > X-BeenThere: linux-lvm@sistina.com > X-Mailman-Version: 2.0 > Precedence: bulk > Reply-To: linux-lvm@sistina.com > X-Reply-To: bluca@comedia.it > List-Help: <mailto:linux-lvm-request@sistina.com?subject=help> > List-Post: <mailto:linux-lvm@sistina.com> > List-Subscribe: <http://lists.sistina.com/mailman/listinfo/linux-lvm>, > <mailto:linux-lvm-request@sistina.com?subject=subscribe> > List-Id: linux-lvm general discussion <linux-lvm.sistina.com> > List-Unsubscribe: <http://lists.sistina.com/mailman/listinfo/linux-lvm>, > <mailto:linux-lvm-request@sistina.com?subject=unsubscribe> > List-Archive: <http://lists.sistina.com/pipermail/linux-lvm/> > Date: Tue, 13 Mar 2001 08:41:02 +0100 > X-Mailfolder: mail/archives/linux/lvm-2001.gz > > On Mon, Mar 12, 2001 at 05:59:54PM -0700, Andreas Dilger wrote: > > Daniel Whiker writes: > > > Thanks for helping. I did in fact have devfs compiled in and mounted to an > > > alternative path. > > > > Currently devfs and LVM don't work well together, especially if it is not > > mounted on /dev. My patch fixes a small part of this, but it is still > > safer to simply configure devfs out of the kernel when using LVM, until > > your system is working properly. > > > I believe the big problem is that when lvm is compiled in /proc/partitions > contains device names in devfs format, if devfs is not mounted the lvm dir > cache will get filled with devfs names, which do not exist. > Another problem with devfs is symlinks (eg: /dev/sda), the lvm dircache will > contain only the long name (/dev/scsi/....). > > i have a couple of ideas, but no time to code (sorry) > 1) using realpath in the tools to solve issue 2 > 2) checking if the devices mentioned in /proc/partition do really exist, else > switch the cache to "scan the dev directory mode" > > but better than the above > 3) add another structure to the cache which contains aliases to the device > we have in the cache, aliases are added dynamically when found on the command > line or in the VGDA of a PV. We use > alias[c].name=possible alias; > lstat(possible alias, &statbuf) > if (S_ISLNK(statbuf.st_mode)) { > alias[c].target=lvm_dir_cache_find(realpath(possible alias)); > if !(alias[c].target) stat(realptah(possible alias), &statbuf) > } > if (S_ISBLK(statbuf.st_mode)) { > alias[c].target=lvm_dir_cache_find_dev(statbuf.st_dev>>8,statbuf.st_mode&((1<<8)-1)); > /* the above function has to be written*/ > } > if (!alias[c].target) complain(loudly); > c++; > > then we modify lvm_dir_cache_find to loop also on alias[], before it starts searching th > cache. > > regards, > L. > > P.S. in case you did not notice the above is not real code :) > > > > > -- > Luca Berra -- bluca@comedia.it > Communication Media & Services S.r.l. > /"\ > \ / ASCII RIBBON CAMPAIGN > X AGAINST HTML MAIL > / \ > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > Return-Path: <linux-lvm-admin@sistina.com> > Delivered-To: bluca@comedia.it > Received: from sistina.com (hermes.sistina.com [208.210.145.141]) > by colombina.comedia.it (Postfix) with SMTP id B2C40506D > for <bluca@comedia.it>; Tue, 13 Mar 2001 17:44:19 +0000 () > Received: (qmail 7493 invoked from network); 13 Mar 2001 17:41:08 -0000 > Received: from localhost (HELO hermes.sistina.com) (127.0.0.1) > by localhost with SMTP; 13 Mar 2001 17:41:08 -0000 > Delivered-To: linux-lvm@sistina.com > Received: (qmail 7385 invoked from network); 13 Mar 2001 17:40:03 -0000 > Received: from fry.sistina.com (HELO antimony.sistina.com) (208.210.145.138) > by hermes.sistina.com with SMTP; 13 Mar 2001 17:40:03 -0000 > Received: by antimony.sistina.com (sSMTP sendmail emulation); Tue, 13 Mar 2001 11:40:54 -0600 > From: AJ Lewis <lewis@sistina.com> > To: linux-lvm@sistina.com > Subject: Re: [linux-lvm] Problem with vgscan/ vgcfgrestore > Message-ID: <20010313114054.E15679@sistina.com> > References: <GIEGKMCLIJBKBNBCCHEACEJACAAA.heimdall@mail.org> <200103130059.f2D0xsJ01176@webber.adilger.int> <20010313084102.A28227@colombina.comedia.it> > Mime-Version: 1.0 > Content-Type: multipart/signed; micalg=pgp-sha1; > protocol="application/pgp-signature"; boundary="KuLpqunXa7jZSBt+" > Content-Disposition: inline > User-Agent: Mutt/1.3.15i > In-Reply-To: <20010313084102.A28227@colombina.comedia.it>; from bluca@comedia.it on Tue, Mar 13, 2001 at 08:41:02AM +0100 > Sender: linux-lvm-admin@sistina.com > Errors-To: linux-lvm-admin@sistina.com > X-BeenThere: linux-lvm@sistina.com > X-Mailman-Version: 2.0 > Precedence: bulk > Reply-To: linux-lvm@sistina.com > List-Help: <mailto:linux-lvm-request@sistina.com?subject=help> > List-Post: <mailto:linux-lvm@sistina.com> > List-Subscribe: <http://lists.sistina.com/mailman/listinfo/linux-lvm>, > <mailto:linux-lvm-request@sistina.com?subject=subscribe> > List-Id: linux-lvm general discussion <linux-lvm.sistina.com> > List-Unsubscribe: <http://lists.sistina.com/mailman/listinfo/linux-lvm>, > <mailto:linux-lvm-request@sistina.com?subject=unsubscribe> > List-Archive: <http://lists.sistina.com/pipermail/linux-lvm/> > Date: Tue, 13 Mar 2001 11:40:54 -0600 > X-Mailfolder: mail/archives/linux/lvm-2001.gz > > On Tue, Mar 13, 2001 at 08:41:02AM +0100, Luca Berra wrote: > > i have a couple of ideas, but no time to code (sorry) > > 1) using realpath in the tools to solve issue 2 > > This should be done no matter what. I can't think of any good reason not to > have the tools follow sym-links. > > > 2) checking if the devices mentioned in /proc/partition do really exist, else > > switch the cache to "scan the dev directory mode" > > I believe this is the way it works at present > > > but better than the above > > 3) add another structure to the cache which contains aliases to the device > > we have in the cache, aliases are added dynamically when found on the command > > line or in the VGDA of a PV. We use > > alias[c].name=possible alias; > > lstat(possible alias, &statbuf) > > if (S_ISLNK(statbuf.st_mode)) { > > alias[c].target=lvm_dir_cache_find(realpath(possible alias)); > > if !(alias[c].target) stat(realptah(possible alias), &statbuf) > > } > > if (S_ISBLK(statbuf.st_mode)) { > > alias[c].target=lvm_dir_cache_find_dev(statbuf.st_dev>>8,statbuf.st_mode&((1<<8)-1)); > > /* the above function has to be written*/ > > } > > if (!alias[c].target) complain(loudly); > > c++; > > > > then we modify lvm_dir_cache_find to loop also on alias[], before it starts searching th > > cache. > > This looks interesting...and could possibly help a lot as well. > > Regards, > -- > AJ Lewis > Sistina Software Inc. Voice: 612-379-3951 > 1313 5th St SE, Suite 111 Fax: 612-379-3952 > Minneapolis, MN 55414 E-Mail: lewis@sistina.com > http://www.sistina.com > > Current GPG fingerprint = 3B5F 6011 5216 76A5 2F6B 52A0 941E 1261 0029 2648 > Get my key at: http://www.sistina.com/~lewis/gpgkey > (Unfortunately, the PKS-type keyservers do not work with multiple sub-keys) > > -----Begin Obligatory Humorous Quote---------------------------------------- > Life's short and hard, kind of like a bodybuilding elf > -----End Obligatory Humorous Quote------------------------------------------ *** 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 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _______________________________________________ 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
