hi narsimha, If u want to completely remove ur PV (i.e. if u want to lose ur data) then there is a very simple way to get rid of this problem. Just do following.... dd of=/dev/hda3 ......hda3 becuse ur PV resides on that <enter approx 50 chars> <press cntrl+d> Of course it not the recommend solution, but it will solve ur problem :-) Actually ur VGDA data on the disk may be corrupted, that's why u r getting this error message. When u create a PV/VG, some data is written on the disk (on some initial disk blocks). So if u erase that by doing 'dd', then u can create fresh PV/VG using that disk. ----- Original Message ----- From: <narsimha.kulkarni@bt.com> To: <linux-lvm@sistina.com> Sent: Thursday, May 29, 2003 8:03 PM Subject: help needed > hi following is the log of the commands.... > i want to remove the volume group completely.... > or i want to restore it.... > > how do i do it > > vgscan -- reading all physical volumes (this may take a while...) > vgscan -- found active volume group "helena_vg" > vgscan -- ERROR "lv_read_all_lv(): number of LV" can't get data of volume > group) > vgscan -- found active volume group "volg" > vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created > vgscan -- WARNING: This program does not do a VGDA backup of your volume > groups > > vgremove -- ERROR: can't remove active volume group "helena_vg" > > > vgcfgrestore -- locking logical volume manager > vgcfgrestore -- restoring volume group "helena_vg" from > "/etc/lvmconf/helena_vg.conf" > vgcfgrestore -- checking existence of "/etc/lvmconf/helena_vg.conf" > vgcfgrestore -- "/etc/lvmconf/helena_vg.conf" doesn't exist > vgcfgrestore -- a backup for volume group helena_vg is not available > > > pvscan -- reading all physical volumes (this may take a while...) > pvscan -- inactive PV "/dev/hda3" is associated to an unknown VG (run > vgscan) > pvscan -- ACTIVE PV "/dev/hdb1" of VG "volg" [31.48 GB / 31.48 GB > free] > pvscan -- total: 2 [39.08 GB] / in use: 2 [39.08 GB] / in no VG: 0 [0] > > pvchange -- locking logical volume manager > pvchange -- reading physical volume data /dev/hda3 from disk > pvchange -- checking physical volume "/dev/hda3" consistency > pvchange -- finding volume group of physical volume "/dev/hda3" > pvchange -- unable to find volume group of "/dev/hda3" (VG not active?) > pvchange -- unlocking logical volume manager > pvchange -- 0 physical volumes changed / 0 physical volumes already o.k. > > _______________________________________________ > 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/ _______________________________________________ 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/
