I am having trouble with LVM and one of my physical volumes.
Using Ubuntu Desktop 14.04
I was trying to set up LVM across two disks (not containing the OS or Home).
First I created the initial Physical Volume, the Volume Group, and the Logical volume, and everything seemed fine. The problem occurred after trying to add the second disk. During the course of this, I managed to screw up the entire thing. Now I have a physical volume that is in a sort of limbo.
If I check the Volume Group, it says /dev/sda is in the volume group. See the end of the following:
Code:
sudo vgdisplay -v
Finding all volume groups
Incorrect metadata area header checksum on /dev/sda at offset 4096
Finding volume group "lvmglr"
Incorrect metadata area header checksum on /dev/sda at offset 4096
--- Volume group ---
VG Name lvmglr
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 6.37 TiB
PE Size 4.00 MiB
Total PE 1669257
Alloc PE / Size 1669257 / 6.37 TiB
Free PE / Size 0 / 0
VG UUID fo3J0d-4Fx2-aGxs-4LA7-Dd1F-T7EM-4WNcyN
--- Logical volume ---
LV Path /dev/lvmglr/Storage
LV Name Storage
VG Name lvmglr
LV UUID jvRh2S-yfgm-AYQr-z13N-MEHB-lxih-eFx07H
LV Write Access read/write
LV Creation host, time jaypc, 2014-09-07 11:17:18 -0400
LV Status available
# open 0
LV Size 6.37 TiB
Current LE 1669257
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Physical volumes ---
PV Name /dev/sdg
PV UUID JZHnOJ-BXd1-TPHF-udMI-c7lM-4kYz-4yeeB3
PV Status allocatable
Total PE / Free PE 953861 / 0
PV Name /dev/sda
PV UUID 5oMQWz-WreT-OyWd-Oy5b-OrvQ-1YOh-QsnW30
PV Status allocatable
Total PE / Free PE 715396 / 0
However, if I check out the physical volume itself, it says it is not in any volume group. So right there it is not consistent, because the Volume Group reports it already contains /dev/sda, but /dev/sda reports that it is not in any Volume Group:
Code:
sudo pvdisplay -v /dev/sda
Using physical volume(s) on command line
Incorrect metadata area header checksum on /dev/sda at offset 4096
Wiping cache of LVM-capable devices
"/dev/sda" is a new physical volume of "2.73 TiB"
--- NEW Physical volume ---
PV Name /dev/sda
VG Name
PV Size 2.73 TiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 5oMQWz-WreT-OyWd-Oy5b-OrvQ-1YOh-QsnW30
It now is impossible to reduce:
Code:
sudo vgreduce -v lvmglr /dev/sda
Finding volume group "lvmglr"
Incorrect metadata area header checksum on /dev/sda at offset 4096
Incorrect metadata area header checksum on /dev/sda at offset 4096
Using physical volume(s) on command line
Physical volume "/dev/sda" still in use
Still in use, so I tried the following to move the extants on the drive elsewhere:
Code:
sudo pvmove -v -n lvmglr /dev/sda
Incorrect metadata area header checksum on /dev/sda at offset 4096
Wiping cache of LVM-capable devices
Physical volume /dev/sda not in a volume group
Run `pvmove --help' for more information.
This shows /dev/sda not in group. I can't even force removal:
Code:
sudo pvremove -v -ff /dev/sda
Incorrect metadata area header checksum on /dev/sda at offset 4096
Wiping cache of LVM-capable devices
Can't open /dev/sda exclusively - not removing. Mounted filesystem?
and the file system is definitely not mounted.
There is also the matter of the metadata header checksum error which I constantly get.
At this point, I am trying to remove /dev/sda from the volume group lvmglr, so I can retry adding it again.
I am looking for any help I can get on this, because now I am stuck and can progress no further.
See what that shows. If all else fails you can look at running a vgcfgbackup and vgcfgrestore with choose the config in /etc/lvm that is good. The tree looks like this.
ls -R /etc/lvm
/etc/lvm:
archive backup cache lvm.conf
Dear community,
is it possible to add more volumes to actual LVM disk? I have the following:
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 120G 0 disk
├─sda1 8:1 0 500M 0 part /boot
└─sda2 ... (0 Replies)
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