LVM1 is likely struggling with your multi-level MD setup :( (it should be able to handle a one-level MD config fine) LVM2s device name filters can handle this much better, because you can exclude md13 and md10 from being recognized by the LVM2 tools in /etc/lvm/lvm.conf. Regards, Heinz -- The LVM Guy -- On Thu, May 29, 2003 at 03:06:25PM +0200, Rainer Krienke wrote: > Hello, > > I'am in trouble running lvm (lvm-1.0.6 on a suse8.2 system with kernel 2.4.20) > on a raid md device which in turn is based on two md multiptah devices: > > /dev/md20 (raid1) > /dev/md10 (mp) /dev/md13 (mp) mp=multipath > disk1 disk2 > > cat /proc/mdstat says this (just to make things clearer): > > md20 : active raid1 md10[0] md13[1] > 903371648 blocks [2/2] [UU] > > md13 : active multipath sde2[0] sdh2[1] > 903371712 blocks [2/2] [UU] > > md10 : active multipath sdd1[0] sdg1[1] > 903373696 blocks [2/2] [UU] > > The basic setup worked just fine. I created one physikal volume on /dev/md20 > (800GB) then one volumegroup "data" and then several logical volumes. So far > everything was fine. Then I deleted one logical volume and trouble started. > After the deletion I can no longer run vgscan. It keeps telling me (please > see attachment for vgscan -d output): > > vgscan -- reading all physical volumes (this may take a while...) > vgscan -- found active volume group "data" > vgscan -- ERROR "pv_check_consistency_all_pv(): PE" volume group "data" is > inconsistent > vgscan -- ERROR: unable to do a backup of volume group "data" > vgscan -- ERROR "lvm_tab_vg_remove(): unlink" removing volume group "data" > from "/etc/lvmtab" > vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created > vgscan -- WARNING: This program does not do a VGDA backup of your volume group > > I noticed that something must have gone wrong with the physical volume. It > seems to me that lvm did not only recognice the physical volume on /dev/md20 > but somehow also on the underlying sub mirror devices /dev/md10 and > /dev/md13. Right after I created the logical volumes lvmdiskscan showed this: > ... > lvmdiskscan -- /dev/md10 [ 861.52 GB] free meta device > lvmdiskscan -- /dev/md13 [ 861.52 GB] free meta device > lvmdiskscan -- /dev/md20 [ 861.52 GB] USED LVM meta device > ... > > Since the deletion of the logical volume it says: > > ... > lvmdiskscan -- /dev/md10 [ 861.52 GB] USED LVM meta device > lvmdiskscan -- /dev/md13 [ 861.52 GB] USED LVM meta device > lvmdiskscan -- /dev/md20 [ 861.52 GB] USED LVM meta device > ... > > Is there any known problem with lvm on raid1 on top of multipath devices? > Could it be that lvm wrote a pv-signature not only one the real physical > volume on /dev/md20 but also on /dev/md10 and /dev/md13 or is this a suse > bug? > > I have to note that I did the changes to the PVs, VGs, LVs all with yast from > suse not with the pv* vg* lv* commandline tools. Is this a know source of > trouble? > > Would be very greatful for any help since the system in question actually > should go into production very soon..... > > Thanks Rainer > -- > --------------------------------------------------------------------------- > Rainer Krienke, Universitaet Koblenz, Rechenzentrum > Universitaetsstrasse 1, 56070 Koblenz, Tel: +49 261287 -1312, Fax: -1001312 > Mail: krienke@uni-koblenz.de, Web: http://www.uni-koblenz.de/~krienke > Get my public PGP key: http://www.uni-koblenz.de/~krienke/mypgp.html > --------------------------------------------------------------------------- *** 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://tldp.org/HOWTO/LVM-HOWTO/
