KVM Guest Disk Layout

The KVM Guests usually only runs one service. Many services does not require that much diskspace to run. Today filesystems can do online growing and shrinking, so the disksize can always be adjusted later on.

Hardware

One 4G virtual disk.

Partitions

vda    4G
vda1 256M
vda2   4G 

LVM

vda2 lvm (vg_os)

LVM Volumes

vg_os root   2G (/dev/vg_os/root)
vg_os swap 512M (/dev/vg_os/swap)

Filesystems and Mountpoints

/dev/vg_os/root /     (btrfs)
/dev/vda1     /boot (btrfs)
/dev/vg_os/swap       (swap)