root@mylinux:~# mdadm --create /dev/md3 --level=1 --raid-devices=2 /dev/sdd1 /dev/sde1
root@mylinux:~# vgdisplay vg1
--- Volume group ---
VG Name vg1
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.80 TiB
PE Size 4.00 MiB
Total PE 471654
Alloc PE / Size 471654 / 1.80 TiB
Free PE / Size 0 / 0
VG UUID iIXHn9-h7s1-6oMw-uFvl-BJMk-Jc8N-lEBRX4
root@mylinux:~# lvdisplay vg1
--- Logical volume ---
LV Path /dev/vg1/home
LV Name home
VG Name vg1
LV UUID CcQBbz-2GAZ-TwWm-zVva-RsRW-j1H9-L6djE6
LV Write Access read/write
LV Creation host, time server, 2014-02-26 14:26:05 +0100
LV Status available
# open 1
LV Size 1.80 TiB
Current LE 471654
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
root@mylinux:~# pvdisplay
--- Physical volume ---
PV Name /dev/md2
VG Name vg1
PV Size 1.80 TiB / not usable 4.81 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 471654
Free PE 0
Allocated PE 471654
PV UUID cnWVNt-iawf-fJxq-wgm9-dnmb-rB4y-ij5Oyg
--- Physical volume ---
PV Name /dev/md1
VG Name VG0
PV Size 18.61 GiB / not usable 4.88 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 4763
Free PE 0
Allocated PE 4763
PV UUID 3QdqNr-g6yH-fnL6-5jEf-Jt1k-h03Y-2HPz0v
root@mylinux:~# pvcreate /dev/md3
Physical volume "/dev/md3" successfully created
root@mylinux:~# pvdisplay
--- Physical volume ---
PV Name /dev/md2
VG Name vg1
PV Size 1.80 TiB / not usable 4.81 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 471654
Free PE 0
Allocated PE 471654
PV UUID cnWVNt-iawf-fJxq-wgm9-dnmb-rB4y-ij5Oyg
--- Physical volume ---
PV Name /dev/md1
VG Name VG0
PV Size 18.61 GiB / not usable 4.88 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 4763
Free PE 0
Allocated PE 4763
PV UUID 3QdqNr-g6yH-fnL6-5jEf-Jt1k-h03Y-2HPz0v
"/dev/md3" is a new physical volume of "3.64 TiB"
--- NEW Physical volume ---
PV Name /dev/md3
VG Name
PV Size 3.64 TiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID dQiWVr-yKXE-3l7s-2s1x-y8TD-E1w4-GCc8aF
root@mylinux:~# vgdisplay
--- Volume group ---
VG Name vg1
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.80 TiB
PE Size 4.00 MiB
Total PE 471654
Alloc PE / Size 471654 / 1.80 TiB
Free PE / Size 0 / 0
VG UUID iIXHn9-h7s1-6oMw-uFvl-BJMk-Jc8N-lEBRX4
--- Volume group ---
VG Name VG0
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 18.61 GiB
PE Size 4.00 MiB
Total PE 4763
Alloc PE / Size 4763 / 18.61 GiB
Free PE / Size 0 / 0
VG UUID ifFvFY-yt9A-w5g8-af3G-4Kf1-AJdn-Z7531i
root@mylinux:~# vgextend vg1
Please enter a physical volume path
Run `vgextend --help' for more information.
root@mylinux:~# vgextend vg1 /dev/md3
Volume group "vg1" successfully extended
root@mylinux:~# vgdisplay
--- Volume group ---
VG Name vg1
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 5.44 TiB
PE Size 4.00 MiB
Total PE 1425483
Alloc PE / Size 471654 / 1.80 TiB
Free PE / Size 953829 / 3.64 TiB
VG UUID iIXHn9-h7s1-6oMw-uFvl-BJMk-Jc8N-lEBRX4
--- Volume group ---
VG Name VG0
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 18.61 GiB
PE Size 4.00 MiB
Total PE 4763
Alloc PE / Size 4763 / 18.61 GiB
Free PE / Size 0 / 0
VG UUID ifFvFY-yt9A-w5g8-af3G-4Kf1-AJdn-Z7531i
root@mylinux:~#
root@mylinux:~# lvextend -L+3.6TiB /dev/vg1/home
Rounding size to boundary between physical extents: 3.60 TiB
Extending logical volume home to 5.40 TiB
Logical volume home successfully resized
root@mylinux:~# vgdisplay
--- Volume group ---
VG Name vg1
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 5.44 TiB
PE Size 4.00 MiB
Total PE 1425483
Alloc PE / Size 1415373 / 5.40 TiB
Free PE / Size 10110 / 39.49 GiB
VG UUID iIXHn9-h7s1-6oMw-uFvl-BJMk-Jc8N-lEBRX4
--- Volume group ---
VG Name VG0
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 18.61 GiB
PE Size 4.00 MiB
Total PE 4763
Alloc PE / Size 4763 / 18.61 GiB
Free PE / Size 0 / 0
VG UUID ifFvFY-yt9A-w5g8-af3G-4Kf1-AJdn-Z7531i
root@mylinux:~# xfs_growfs /dev/vg1/home
meta-data=/dev/mapper/vg1-home isize=256 agcount=32, agsize=15092928 blks
= sectsz=4096 attr=2
data = bsize=4096 blocks=482973696, imaxpct=5
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=235827, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 482973696 to 1449341952
root@mylinux:~# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VG0-per 19G 2.5G 17G 14% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 795M 6.5M 789M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 0 3.9G 0% /run/shm
none 100M 0 100M 0% /run/user
/dev/sdc1 3.7T 1.9T 1.8T 52% /backup
/dev/mapper/vg1-home 5.4T 1.8T 3.7T 32% /home
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