Resize root volume without rebooting - centos7 / centos8
Quote from Moshe Sharon on 22/08/2022, 9:57 amProblem
User wants to extended root volume ( lvm system must be configured and used ) without rebooting the operating system
Solution
login as root or use sudu
Add additional disk ( physical or virtual )
reboot the system or follow this post ”Add extra disk without rebooting”
check that the new disk available ( the following command will show you disk sizes )
fdisk -l
Assuming the device you added is /dev/sdb add physical volume
pvcreate /dev/sdb
list volumegroups and find the vg you want to add
vgdisplay
extended it with the new disk ( add the new disk to the volume group )
vgextend centos /dev/sdc
extended entire diskspace of logical volume
lvextend -l+100%FREE /dev/centos/root
resizing ext2/ext3/ext4
resize2fs -p /dev/centos/root
resizing extfs
xfs_growfs /
Problem
User wants to extended root volume ( lvm system must be configured and used ) without rebooting the operating system
Solution
login as root or use sudu
Add additional disk ( physical or virtual )
reboot the system or follow this post ”Add extra disk without rebooting”
check that the new disk available ( the following command will show you disk sizes )
fdisk -l
Assuming the device you added is /dev/sdb add physical volume
pvcreate /dev/sdb
list volumegroups and find the vg you want to add
vgdisplay
extended it with the new disk ( add the new disk to the volume group )
vgextend centos /dev/sdc
extended entire diskspace of logical volume
lvextend -l+100%FREE /dev/centos/root
resizing ext2/ext3/ext4
resize2fs -p /dev/centos/root
resizing extfs
xfs_growfs /
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