KVM Host Guest Installation Media
When installing a KVM Guest, that KVM Guest needs to boot from an installation media. Create a partition that holds those installation media.
lvcreate --name media --size 4G vg2 mkfs.btrfs /dev/vg2/media mkdir /mnt/media
Add this to /etc/fstab.
/dev/mapper/vg2-media /mnt/media btrfs defaults 0 0
Mount the new partition.
mount /mnt/media
Get the installation media.
mkdir -p /mnt/media/debian/stretch cd /mnt/media/debian/stretch wget https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-9.1.0-amd64-netinst.iso wget https://cdimage.debian.org/debian-cd/current/i386/iso-cd/debian-9.1.0-i386-netinst.iso