[linux-lvm] Couldn't find device with uuid error

[Jenny Zhang <jenny osdl org>]

Hi,

I am new to LVM2, it is quite possible that I missed some steps.

I created an lv using the command:
dd if=/dev/zero of=/dev/sde bs=1k count=1
blockdev --rereadpt /dev/sde
pvcreate -v /dev/sde
... repeat for 27 disks

vgcreate v_db /dev/sde/ /dev/sdf /dev/sde ... 27 disks
lvcreate -i27 -I512 -L 100G -n lv_dbt3 v_db

The first time everything is fine.

To test another linux kernel, I re-imaged the whole system and
rebooted.  But when I try to create lv, it complains 
Couldn't find device with uuid ...

pvdata -p /dev/sde
--- NEW Physical volume ---
PV Name               /dev/sde
VG Name
PV Size               0 [0 secs]
PV#                   0
PV Status             NOT available
Allocatable           NO
Cur LV                0
PE Size (KByte)       0
Total PE              0
Free PE               0
Allocated PE          0
PV UUID               none

lvmdiskscan shows:
 /dev/sde   [       16.95 GB] LVM physical volume

Do I have to remove the lv and vg before I re-image the system?
What can I do now?

TIA,
Jenny