Basically i have a chance to resize a kvm without lvm / lvm2. Adding size to a kvm is pretty straight forward, all you need to do is the following,
qemu-img resize vmdisk.img +40G
and if you boot up your machine, you'll see 10G if you hit the following command,
fdisk -l
now, we need to increase this partition so that our existing partition will increase from 60GB to 100GB.
[root@test ~]# fdisk /dev/sda
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First sector (2048-2097151, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-2097151, default 2097151):
Using default value 2097151
Command (m for help): p
Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders, total 2097152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x2dbb9f13
Device Boot Start End Blocks Id System
/dev/sdb1 2048 2097151 1047552 83 Linux
Command (m for help): w
The partition table has been altered!
Once you've done that you should have a bigger partition of 100GB
Resize your filesystem with resize2fs
now just do the following and your size should increase to 100GB
root@test:~# resize2fs /dev/sda1 resize2fs 1.43.5 (04-Aug-2017) Filesystem at /dev/sda1 is mounted on /; on-line resizing required old_desc_blocks = 8, new_desc_blocks = 13 The filesystem on /dev/sda1 is now 26214144 (4k) blocks long.
pretty straight forward i must say!