I have 2 disk sda and sdb, build a md0 on them, and create vg and lv on top of md0. when i upgraded my system from fedora 2 to 3, it reported my sda and sdb contain uninitialized partition table and need to clean. i mad a stupid error by pressing yes! now no matter what command i execute, it reports. [root@localhost ~]# lvscan Logical volume (vol1) contains an incomplete mapping table. Volume group "datavg" not found [root@localhost ~]# pvscan -P Partial mode. Incomplete volume groups will be activated read-only. Logical volume (vol1) contains an incomplete mapping table. No matching physical volumes found [root@localhost ~]# vgmknodes Logical volume (vol1) contains an incomplete mapping table. Volume group "datavg" not found i wonder if there is any way to get my personal data back. thanks so much if anybody can give a hint! these are my system information [root@localhost ~]# fdisk /dev/sda -l Disk /dev/sda: 164.6 GB, 164696555520 bytes 255 heads, 63 sectors/track, 20023 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System [root@localhost ~]# fdisk /dev/sdb -l Disk /dev/sdb: 164.6 GB, 164696555520 bytes 255 heads, 63 sectors/track, 20023 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System [root@localhost ~]# more /proc/mdstat Personalities : [raid1] md0 : active raid1 sda[0] sdb[1] 160836416 blocks [2/2] [UU] unused devices: <none> _______________________________________________ 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/