I was running unstable Debian and switched to Ubuntu. I had a volume group made up of 4 drives in linear append mode. I believe the Ubuntu installer wrote a partion table to one of the drives in the array, or possibly wrote grub on the drive. Anyway, after install one of the physical volumes shows as "unknown device" and none of the other commands could find some uuid-XXX. I attemped to correct this by using "pvcreate -u [the_old_uuid] -Z n" which seemed to bring the drive back into the volume group.
The problem now is that none of the volume group devices actually work. I have devices at /dev/mapper/vg-xxxx that I can't read from (obviously mount doesn't work either).
Any ideas on what is going on? Thanks for any help. Is the volume group lost forever?
One thing I don't understand is the "Error" when I do dmsetup:
# dmsetup status
lvm2|vg|data: 0 490209280 linear
lvm2|vg|data: 490209280 220004352 linear
lvm2|vg|data: 710213632 234422272 linear
lvm2|vg|data: 944635904 490209280 linear
hdh2: 0 230516685 linear
vg-data:
hdh1: 0 3919797 linear
Error|lvm2|vg|pv3: 0 490209664 error
vg-var:
lvm2|vg|var: 0 10485760 linear
# pvdisplay
--- Physical volume ---
PV Name /dev/hdh2
VG Name vg
PV Size 109.91 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 3517
Free PE 0
Allocated PE 3517
PV UUID ZytKG3-bMMZ-x69a-sPZW-sREN-YsZI-200XM0
--- Physical volume ---
PV Name /dev/hdg
VG Name vg
PV Size 111.78 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 3577
Free PE 0
Allocated PE 3577
PV UUID m0JKRA-7qZ5-6pya-gJVE-CBS2-MlMU-7O6ICX
--- Physical volume ---
PV Name /dev/hde
VG Name vg
PV Size 233.75 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 7480
Free PE 0
Allocated PE 7480
PV UUID MIVulr-lAOu-pERm-kMTi-DYl1-LxOt-gF7wUT
--- Physical volume ---
PV Name /dev/hdf
VG Name vg
PV Size 233.75 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 7480
Free PE 0
Allocated PE 7480
PV UUID 9vOuxO-FoXv-2qFQ-KAef-eWOo-tg0q-zUdB66
# pvscan
PV /dev/hdh2 VG vg lvm2 [109.91 GB / 0 free]
PV /dev/hdg VG vg lvm2 [111.78 GB / 0 free]
PV /dev/hde VG vg lvm2 [233.75 GB / 0 free]
PV /dev/hdf VG vg lvm2 [233.75 GB / 0 free]
Total: 4 [689.19 GB] / in use: 4 [689.19 GB] / in no VG: 0 [0 ]
# lvdisplay
--- Logical volume ---
LV Name /dev/vg/var
VG Name vg
LV UUID Q7gaTE-ZROt-aTML-UlxU-J0uh-Ecnu-5RmVVO
LV Write Access read/write
LV Status available
# open 0
LV Size 5.00 GB
Current LE 160
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:0
--- Logical volume ---
LV Name /dev/vg/data
VG Name vg
LV UUID soHvwL-1e9K-9CMC-RtyP-qEwo-tbfu-5UwYFo
LV Write Access read/write
LV Status available
# open 0
LV Size 684.19 GB
Current LE 21894
Segments 4
Allocation inherit
Read ahead sectors 0
Block device 253:1
# lvscan
ACTIVE '/dev/vg/var' [5.00 GB] inherit
ACTIVE '/dev/vg/data' [684.19 GB] inherit
# vgdisplay
--- Volume group ---
VG Name vg
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 19
VG Access read/write
VG Status resizable
MAX LV 255
Cur LV 2
Open LV 0
Max PV 255
Cur PV 4
Act PV 4
VG Size 689.19 GB
PE Size 32.00 MB
Total PE 22054
Alloc PE / Size 22054 / 689.19 GB
Free PE / Size 0 / 0
VG UUID 1aPbjm-Prhr-UBQb-SMpd-4zlO-7gSy-fLg5FA
# vgscan
Reading all physical volumes. This may take a while...
Found volume group "vg" using metadata type lvm2
_______________________________________________ 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/
