Expand Space without Rebooting VM
Current usage disk with lsblk command
And here is LVM partition table
First step we need grow partition in /dev/sda3, install package growpart first
dnf install -y cloud-utils-growpart
Then we resize partition with this command
growpart /dev/sda 3
See the different before and after, if you don’t use LVM partition scheme just execute resize2fs /dev/sda3 to full fill the partition.
pvresize /dev/sda3
pvs
vgs
Now you’re ready to extent the LVM partition
lvresize --extents +100%FREE --resizefs /dev/vg0/root
If you just resize partition only 20%, this sample command
lvresize --size +20G --resizefs /dev/vg0/root
Expand Space without Rebooting VM in ESXi Guest Host
Re-scan the SCSI Bus to Add a SCSI Device Without rebooting the VM using the following command
First, check the name(s) of your scsi devices.
ls /sys/class/scsi_device/
Then rescan the scsi bus. Below you can replace the ‘0\:0\:0\:0′ with the actual scsi bus name found with the previous command. Each colon is prefixed with a slash, which is what makes it look weird.
echo 1 > /sys/class/scsi_device/0\:0\:0\:0/device/rescan
Resize disk but no space left
if there is a condition where there is no space left on the block device, you can use the following command:
mount -o size=10M,rw,nodev,nosuid -t tmpfs tmpfs /tmp
then do the same workaround to resize the disk