OK....so i backed up all data on one partition... vgchange -a n fdisk /dev/sdb, /dev/sdc and /dev/sdd delete the partition within... ie. delete /dev/sdb1, /dev/sdc1 and /dev/sdd1 then; pvscan .....Voila...all my PV's are back to life.... vgscan, vgchange -a y, mount! It all worked. No data loss...... So i did not my backup after all. Lessons: Even though everything worked OK under LVM1....when i performed a pvscan under LVM2.....it did not like the fact that PV is whole device (/dev/sdb) and there is an underlying partition, (/dev/sdb1). My issue, mystery solved..... --- Richard Mollel <unixtipz@yahoo.com> wrote: > I have an idea of what is going on...but no really > how > to correct it once and for all. > The PV, VG, LV were created under Mandrake 10.0, in > the days of LVM1. Then an upgrade install was done, > to > take it to Mandriva 2006.0, and thus the LVM1 was > converted to LVM2 in the process. > When i first created the LVM devices...i used whole > device, sdb,sdc & sdd...even though there were > partitions sdb1, sdc1 and sdd1 which comprise of > whole > disk. LVM1 it seems did not have an issue. > Since i was adding disks, i believe it is the first > time that i actually ran pvscan....which effectively > dumped /etc/lvm/.cache and created a new one. > Under new one, since sdb1,sdc1 &sdd1 were of type > LVM...it saw those, but not sdb, sdc and > sdd.....which > it says are unknown devices. > Is there any way to correct it "online"...ie. > without > moving all data out, wipe out all info, rebuild the > PVs, VG & LV? > As a backup plan, i am mounting the whole devices, > sdb, sdc & sdd as loop device using losetup...and > that > seems to work...though it is manual process.... > > _thanks > > Rick > --- Richard Mollel <unixtipz@yahoo.com> wrote: > > > Hi, > > > > Mandriva 2006.0 > > Kernel 2.6.12-24 > > lvm2-2.01.09-1mdk > > > > LVM installed on whole devices, /dev/sdb, sdc and > > sdd. > > It has worked for over 2 years. Not sure if > > something > > in Mandriva regular update changed anything > > related....but now, upon reboot, the whole devices > > are > > seen as PV's. I have to run losetup (set them up > as > > loop devices basically) then > > vgscan,pvscan,lvmdiskscan > > can see them, and i can mount my VG. What actually > > controls pvscan/vgscan commands? > > > > /dev/sdb1: No label detected > > /dev/sdc1: No label detected > > /dev/sdd1: No label detected > > Locking /var/lock/lvm/V_ASSIM_VG RB > > Finding volume group "ASSIM_VG" > > /dev/loop0: lvm2 label detected > > /dev/loop1: lvm2 label detected > > /dev/loop2: lvm2 label detected > > > > _Thanks > > > > Richard > > > > > > > > > ____________________________________________________________________________________ > > Cheap talk? > > Check out Yahoo! Messenger's low PC-to-Phone call > > rates. > > http://voice.yahoo.com > > > > _______________________________________________ > > 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/ > > > > > > > ____________________________________________________________________________________ > Sponsored Link > > Mortgage rates near 39yr lows. > $510k for $1,698/mo. Calculate new payment! > www.LowerMyBills.com/lre > > _______________________________________________ > 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/ > ____________________________________________________________________________________ Sponsored Link Mortgage rates near 39yr lows. $510k for $1,698/mo. Calculate new payment! www.LowerMyBills.com/lre _______________________________________________ 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/
