Increasing the size of a root partition on a Linux VM
[root@cogni01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 2.4G 0 2.4G 0% /dev
tmpfs 2.4G 0 2.4G 0% /dev/shm
tmpfs 2.4G 9.1M 2.4G 1% /run
tmpfs 2.4G 0 2.4G 0% /sys/fs/cgroup
/dev/mapper/ol-root 51G 51G 656M 99% /
/dev/mapper/ol-home 5.0G 39M 5.0G 1% /home
/dev/sda1 497M 308M 190M 62% /boot
tmpfs 491M 0 491M 0% /run/user/54321
shut down the vm on node1
cd "c:\Program Files\Oracle\VirtualBox"
vboxmanage list hdds
vboxmanage modifymedium disk "E:\vmware\Rac01\cogi01\cogi01.vdi" --resize 93488
E:\vmware\Rac02\cogi02\cogi02.vdi
vboxmanage modifymedium disk "E:\vmware\Rac02\cogi02\cogi02.vdi" --resize 93488
fdisk -l
fdisk /dev/sda
[root@cogni02 ~]# fdisk /dev/sda
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
Partition number (3,4, default 3):
First sector (128960512-191463423, default 128960512):
Using default value 128960512
Last sector, +sectors or +size{K,M,G} (128960512-191463423, default 191463423):
Using default value 191463423
Partition 3 of type Linux and of size 29.8 GiB is set
Command (m for help): t
Partition number (1-3, default 3): 3
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): w
[root@cogni02 ~]# pvcreate /dev/sda3
Physical volume "/dev/sda3" successfully created.
[root@cogni02 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name ol
PV Size 61.00 GiB / not usable 4.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 15616
Free PE 0
Allocated PE 15616
PV UUID GK7Lru-MwVh-1Lkd-Qosy-ZpKZ-MmbE-d2N6KN
"/dev/sda3" is a new physical volume of "29.80 GiB"
--- NEW Physical volume ---
PV Name /dev/sda3
VG Name
PV Size 29.80 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID i7B650-7E7m-3eBi-BLqb-aEaR-ZR3L-dHsnZQ
[root@cogni02 ~]# vgextend ol /dev/sda3
Volume group "ol" successfully extended
[root@cogni02 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/ol/root
LV Name root
VG Name ol
LV UUID 543gTj-HSc3-dKix-b1kV-QJAv-Cl12-2AJrvs
LV Write Access read/write
LV Creation host, time cogni01.localdomain, 2021-06-12 19:49:35 +0530
LV Status available
# open 1
LV Size 51.00 GiB
Current LE 13056
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 249:0
--- Logical volume ---
LV Path /dev/ol/swap
LV Name swap
VG Name ol
LV UUID wHo57d-I8FE-QygS-i1kc-QgI5-qNe3-hmTkn5
LV Write Access read/write
LV Creation host, time cogni01.localdomain, 2021-06-12 19:49:36 +0530
LV Status available
# open 2
LV Size 5.00 GiB
Current LE 1280
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 249:1
--- Logical volume ---
LV Path /dev/ol/home
LV Name home
VG Name ol
LV UUID 84jXc0-mfRH-h2Zo-c9mA-NdIF-p793-6wkGVx
LV Write Access read/write
LV Creation host, time cogni01.localdomain, 2021-06-12 19:49:36 +0530
LV Status available
# open 1
LV Size 5.00 GiB
Current LE 1280
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 249:2
lvextend --size +29G --resizefs /dev/ol/root
df -h
[root@cogni01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 2.4G 0 2.4G 0% /dev
tmpfs 2.4G 644M 1.8G 27% /dev/shm
tmpfs 2.4G 9.6M 2.4G 1% /run
tmpfs 2.4G 0 2.4G 0% /sys/fs/cgroup
/dev/mapper/ol-root 74G 51G 24G 69% /
/dev/mapper/ol-home 5.0G 39M 5.0G 1% /home
/dev/sda1 497M 308M 190M 62% /boot
tmpfs 491M 0 491M 0% /run/user/54321
shared_folder 500G 443G 58G 89% /media/sf_shared_folder
tmpfs 491M 12K 491M 1% /run/user/42
