/dev/mapper/bigdisk is not contained in /etc/lvm/.cache. YOu need to change your /etc/lvm/lvm.conf device name filter to include it. Why do you want to create such bigdisk and use it as a PV ? Just create PVs on hd[ac]4 and use LV striping. Regards, Heinz -- The LVM Guy -- On Thu, Feb 05, 2004 at 03:01:02PM +0000, mons grapius wrote: > Hi > > Sorry to post this again but my attempts to register with the mailing list > failed so badly I have no way of knowing if my original email made it.... > > No doubt I'm being stupid but I cannot find a whole load of documentation > on device mapper and LVM2 - there's a certain amount with the source but > it's more what I'd call a rough guide. > > My problem is I cannot create a PV (let alone a logical Vol) on a > devicemapped device. > > I am using a stock 2.4.22 kernel with the latest stable dm and LVM2 stuff > from the sistina web site. > > if I use "lvm version" I get the following > > LVM Version 2.00.08 (2003-11-14) > Library Version 1.00.07-ioctl (2003-11-21) > Driver 4.0.5 > > The kernel patches, the compiles went perfectly and I can see the device > mapper stuff loaded (I've compiled the dm and lvm stuff in statically) at > boot time. I run the mknod scripts at boot up as well. > > I have managed to create a simple stripe using hda4 and hdc4 partitions > and I have a lovely big devicemapper device called bigdisk. > > The special file for this is in /dev/mapper/bigdisk and has major 254 and > minor of 0. > > I can create any regular file system on this device mount it and use it. > > If I try to initialise this with pvcreate as in > > lvm pvcreate -vvv /dev/mapper/bigdisk > > it fails. The ominous line is: > > /dev/mapper/bigdisk: Skipping: Unrecognised LVM device type 254 > > > That's it I cannot progress further than that. > > I am using the sample lvm.conf file that came with the LVM2 code. > Initially I had no lvm.conf file (just for testing) and it did not work. > > I have created a LVM on /dev/hdd4 and that works perfectly so I know the > general installation must be good - well I assume it is! > > I know that I have to be missing something obviously simple but without > any doccos I am stumped. > > Can anyone help - I hope someone else is trying to create LVs on > devicemapper type devices. > > Mark > > _________________________________________________________________ > Sign-up for a FREE BT Broadband connection today! > http://www.msn.co.uk/specials/btbroadband > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Red Hat, Inc. Consulting Development Engineer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@RedHat.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
