How to increase the lvm partition after increasing the harddisk
This article explains the detailed steps to increase the lvm partition after increasing the harddisk. Please note that the values and parameters are used as per the server we have used.
Step1: Login to the server via ssh as root
Step2: Check the current disk layout.
#lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 11:0 1 969M 0 rom
vda 252:0 0 50G 0 disk
├─vda1 252:1 0 1M 0 part
├─vda2 252:2 0 1G 0 part /boot
└─vda3 252:3 0 49G 0 part
└─ubuntu--vg-ubuntu--lv 253:0 0 20G 0 lvm /Here the harddisk have 50G of size in total and we can extend the root partition from 20G to 49G.
Step3: Check the current status of physical volume.
#pvdisplay
--- Physical volume ---
PV Name /dev/vda3
VG Name ubuntu-vg
PV Size <20.00 GiB / not usable 0
Allocatable yes
PE Size 4.00 MiB
Total PE 5120
Free PE 0
Allocated PE 5120
PV UUID gDy04i-tLUC-c2o2-q6Ka-x5YY-3SoS-62TJAEThe result showing that the physical volume have 20.00 GiB size only and we need to resize it to utilize the full harddisk.
Step4: Resize the physical volume.
#pvresize /dev/vda3
Physical volume "/dev/vda3" changed
1 physical volume(s) resized / 0 physical volume(s) not resizedStep5: Recheck the physical volume status.
#pvdisplay
--- Physical volume ---
PV Name /dev/vda3
VG Name ubuntu-vg
PV Size <49.00 GiB / not usable 16.50 KiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 12543
Free PE 0
Allocated PE 12543
PV UUID gDy04i-tLUC-c2o2-q6Ka-x5YY-3SoS-62TJAENow the physical volume is using the full harddisk space.
Step6: Check the volume group and logical volume details.
#vgdisplay -v
--- Volume group ---
VG Name ubuntu-vg
System ID
Format lvm2
Metadata Areas 1
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 1
Act PV 1
VG Size <49.00 GiB
PE Size 4.00 MiB
Total PE 12543
Alloc PE / Size 5120 / 20.00 GiB
Free PE / Size 7423 / <29.00 GiB
VG UUID 0P2xAh-5wse-VmpC-I4cE-7grc-EJjC-VZf3q0
--- Logical volume ---
LV Path /dev/ubuntu-vg/ubuntu-lv
LV Name ubuntu-lv
VG Name ubuntu-vg
LV UUID JVrBEi-dQje-ueWw-Mcns-wtvr-1fNN-AYiw2v
LV Write Access read/write
LV Creation host, time ubuntu-server, 2021-10-25 11:08:54 +0000
LV Status available
# open 1
LV Size 20.00 GiB
Current LE 5120
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Physical volumes ---
PV Name /dev/vda3
PV UUID gDy04i-tLUC-c2o2-q6Ka-x5YY-3SoS-62TJAE
PV Status allocatable
Total PE / Free PE 12543 / 7423Here we can see that "29.00 GiB" is free and we can extend the logical volume "/dev/ubuntu-vg/ubuntu-lv".
Step7: Extend the logical volume.
#lvextend -L+29G /dev/ubuntu-vg/ubuntu-lv
Size of logical volume ubuntu-vg/ubuntu-lv changed from <20.00 GiB (5120 extents) to <49.00 GiB (12543 extents).
Logical volume ubuntu-vg/ubuntu-lv successfully resized.Step8: Recheck whether the changes reflected.
#vgdisplay -v
--- Volume group ---
VG Name ubuntu-vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 5
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 <49.00 GiB
PE Size 4.00 MiB
Total PE 12543
Alloc PE / Size 12543 / <49.00 GiB
Free PE / Size 0 / 0
VG UUID 0P2xAh-5wse-VmpC-I4cE-7grc-EJjC-VZf3q0
--- Logical volume ---
LV Path /dev/ubuntu-vg/ubuntu-lv
LV Name ubuntu-lv
VG Name ubuntu-vg
LV UUID JVrBEi-dQje-ueWw-Mcns-wtvr-1fNN-AYiw2v
LV Write Access read/write
LV Creation host, time ubuntu-server, 2021-10-25 11:08:54 +0000
LV Status available
# open 1
LV Size <49.00 GiB
Current LE 12543
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Physical volumes ---
PV Name /dev/vda3
PV UUID gDy04i-tLUC-c2o2-q6Ka-x5YY-3SoS-62TJAE
PV Status allocatable
Total PE / Free PE 12543 / 0Here we can see that the logical volume resized to 49.00 GiB.
Step9: Resize the root partition.
#resize2fs /dev/ubuntu-vg/ubuntu-lv
resize2fs 1.44.1 (24-Mar-2018)
Filesystem at /dev/ubuntu-vg/ubuntu-lv is mounted on /; on-line resizing required
old_desc_blocks = 4, new_desc_blocks = 7
The filesystem on /dev/ubuntu-vg/ubuntu-lv is now 12844032 (4k) blocks long.Step10: Check the filesystem usage and verify.
#df -h
Filesystem Size Used Avail Use% Mounted on
udev 461M 0 461M 0% /dev
tmpfs 99M 1.1M 98M 2% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 49G 7.3G 39G 16% /
tmpfs 493M 0 493M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 493M 0 493M 0% /sys/fs/cgroup
/dev/loop3 33M 33M 0 100% /snap/snapd/13640
/dev/vda2 976M 150M 759M 17% /bootThat's all…