From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <3A6447E4.7386B8BA@lxco.com> Date: Tue, 16 Jan 2001 14:08:53 +0100 From: =?iso-8859-1?Q?J=FCrgen?= Frank MIME-Version: 1.0 Subject: Re: [linux-lvm] how can I init LVM on software RAID ? References: <3A5EE491.5E4FB886@lxco.com> <3A5F1C1A.5D9C8CE4@symbionsys.com> <3A5F1E6C.CD1D1A3E@lxco.com> <3A5F27F0.1090002@liberate.com> <3A63F53F.BA790549@lxco.com> <20010116092247.G717@66bassett.freeserve.co.uk> Content-Transfer-Encoding: quoted-printable 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: List-Id: Content-Type: text/plain; charset="iso-8859-1" To: Joe Thornber , LVM Yes, the init script is running before the LVM should start. The Raid-System startup, too, but not correctly. (one of the mirror disk failed) > Joe Thornber wrote: > = > Hi, > = > Are the software raid init scripts being called before the LVM ones ? > = > - Joe > = > On Tue, Jan 16, 2001 at 08:16:15AM +0100, J=FCrgen Frank wrote: > > Hi everyone, Hi Chris > > > > ok, I think I have a little solution for my problem with the LVM over= > > SoftwareRaid. It's seems to > > work with the new beta version (sorry I don't try the patch for the > > 0.9). > > So we have only one little problem, if we boot our system the raid1 > > (mirror)-system don't start correctly. > > (on off the mirror disk isn't running). In that case the lvm don't st= art > > too !? > > > > But I think that's more a problem of the SoftwareRaid , possible it's= a > > hardware failure of the disk or the disk have a very high startup tim= e. > > But I don't understand why lvm don't startup, normally this is a > > transparenc fault , or ? > > > > byebye Juergen > > > > > > >Chris Worley wrote: > > > > > > J=FCrgen, > > > > > > You are correct. That is a very good question (and valid for this > > > newsgroup). I don't have an answer. I've seen the documentation t= hat > > > says you can make raid 10 & 50 (etc...) by mixing MD's under PV's, = as > > > well as making VG's out of LVM's (but why?). I've also seen errors= if > > > I haven't set my PV's partition to 8e... and there's no way to fdis= k > > > an MD (to set the partition type). I would worry about the > > > performance of two layers of software overhead below the file syste= m. > > > > > > I had barely crawled out of bed when I saw your post and thought "I= > > > can help a newbie". This is not a trivial question, I was wrong ;)= > > > > > > Chris > > > > > > J=FCrgen Frank wrote: > > > > > > > Chris Worley wrote: > > > > > > > >> J=FCrgen, > > > >> > > > >> "md" and "lvm" are two different ways of making a software raid.= > > > >> > > > >> lvm only does raid0. The main purpose of LVM is to allow you to= manage > > > >> disks underneath the file system... adding and removing disks > > > >> dynamically. > > > >> > > > > > > > > > > > > Jep, that's the point why I want to use this two systems. So I wa= nt to > > > > create a RAID 1 / 5 system and on the top I put the LVM. With thi= s > > > > method I have a good system with snapshot and enlargment feature = !!! > > > > And if I read all the docu (the howto, the pdf from sistina) lvm = works > > > > fine with the md - drives. But, that is the point which I can't f= ollow > > > > in the moment. Because I can't make partitions on a md drive and = LVM > > > > need this partitions ... > > > > > > > > > > > > > > > > > > > >> There should be HOWTO's for md in your /usr/doc area. The LVM n= ewsgroup > > > >> is not a good place to ask MD related questions. There are a fe= w > > > >> "howto's" for LVM: > > > >> > > > >> http://www.sistina.com/lvm/Pages/howto.html > > > >> > > > >> I like: > > > >> > > > >> http://www.ds9a.nl/lvm-howto/HOWTO//cvs/lvm-howto/lvm-howto.html= > > > >> > > > >> Chris > > > >> > > > > > > > > > > > > I read all this docu, but I can't find any help for a system LVM = over > > > > MD-Drives (Software RAID) !!! > > > > > > > > > > > > Juergen > > > > > > > > > > > >> J=FCrgen Frank wrote: > > > >> > > > >>> Hi !! > > > >>> > > > >>> I want to create the following system : > > > >>> > > > >>> I use the new kernel (2.4) and I want to use the software raid = and the > > > >>> lvm, > > > >>> but my problem is... how ? > > > >>> > > > >>> I can't find a step by step documentation and all what I try do= n't work. > > > >>> > > > >>> So what did I done : > > > >>> > > > >>> * create a mirror system with software raid (last version), aft= er this > > > >>> step I have a good raid system with the drive /dev/md0 > > > >>> > > > >>> * normally now I need to create a partition on the drive , but = I read in > > > >>> the raid docu that the md-drives don't support partitions !!! > > > >>> > > > >>> But, without a partiton of the type 0x8e I can't run vgscan and= > > > >>> pvcreate... > > > >>> > > > >>> So, can anyone help me ?! > > > >>> > > > >>> Juergen > > > >>> > > > >>> (sorry for the bad english) > > > >>> _______________________________________________ > > > >>> linux-lvm mailing list > > > >>> linux-lvm@sistina.com > > > >>> http://lists.sistina.com/mailman/listinfo/linux-lvm > > > >> > > _______________________________________________ > > linux-lvm mailing list > > linux-lvm@sistina.com > > http://lists.sistina.com/mailman/listinfo/linux-lvm > >