How do I resize my volume group with lvm2?
vgextend needs new devices but I only have one device md0 for all my physical
volumes.
I know how to resize my logical volumes under the volume group, but somehow
the volume group st1500 did not extend after raid5 reshape with mdadm?
Is my only option backing up 8TB of data and creating a new volume group?
I dont want to add sd[ai] here with vgextend as lvm2 is on top of
mdadm so I guess I should have only one device for my VG?
/Michael Ole Olsen
mfs:~# fdisk -l /dev/md0
Disk /dev/md0: 12002.4 GB, 12002414559232 bytes
2 heads, 4 sectors/track, -1364690304 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk identifier: 0x00000000
Disk /dev/md0 doesn't contain a valid partition table
mfs:~# vgdisplay
--- Volume group ---
VG Name st1500
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 8,19 TB
PE Size 4,00 MB
Total PE 2146198
Alloc PE / Size 2104832 / 8,03 TB
Free PE / Size 41366 / 161,59 GB
VG UUID 1Rl7ly-OguV-fEbS-TU8F-7tdM-9YH3-wKc9F6
lvm> help vgextend
vgextend: Add physical volumes to a volume group
vgextend
[-A|--autobackup y|n]
[-d|--debug]
[-h|--help]
[-t|--test]
[-v|--verbose]
[--version]
VolumeGroupName PhysicalDevicePath [PhysicalDevicePath...]
Command failed with status code 0.
lvm> vgextend st1500 /dev/md0
Physical volume '/dev/md0' is already in volume group 'st1500'
Unable to add physical volume '/dev/md0' to volume group 'st1500'.
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