[linux-lvm] pvcreate not overwriting partition table
rich at storix.com
Wed Jun 9 20:34:33 UTC 2004
from what i can remember, pvcreate should be unable (without "force") to
create a physical volume on an entire disk if there was a partition
table on that disk. something must have changed because now it seems it
doesnt even check, and worse, it doesnt remove the partition table. what
happens is you end up with a pv on the entire disk as well as a
partition table on the disk.
here are some details:
[root at linuxclone root]# lvm version
LVM version: 2.00.15 (2004-04-19)
Library version: 1.00.14-ioctl (2004-04-06)
Driver version: 4.1.0
distribution: fedora core 2
pvscan shows 2 pv's, one on the entire disk the other on a partition on
the same disk. how can that happen?
[root at linuxclone root]# pvscan
PV /dev/hda VG vault_vg lvm2 [37.27 GB / 36.27 GB free]
PV /dev/hda2 lvm2 [37.01 GB]
Total: 2 [74.28 GB] / in use: 1 [37.27 GB] / in no VG: 1 [37.01 GB]
[root at linuxclone root]# sfdisk -l /dev/hda
Disk /dev/hda: 77545 cylinders, 16 heads, 63 sectors/track
Warning: The partition table looks like it was made
for C/H/S=*/255/63 (instead of 77545/16/63).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from
Device Boot Start End #cyls #blocks Id System
/dev/hda1 * 0+ 32 33- 265041 82 Linux swap
/dev/hda2 33 4864 4832 38813040 8e Linux LVM
/dev/hda3 0 - 0 0 0 Empty
/dev/hda4 0 - 0 0 0 Empty
More information about the linux-lvm