Expanding a qcow2-backed system disk (host + guest) — guest volume is lvm and xfs file system

HOST (resize qcow2)

1. Optional backup:
   cp –reflink=auto /vms/fedora02.qcow2 /vms/fedora02.qcow2.bak
2. Offline resize (VM stopped):
   qemu-img resize /vms/fedora02.qcow2 +5G
   # Start the VM after resizing.

GUEST (grow partition, PV, LV, filesystem)

1. Confirm the disk shows the larger size:
   lsblk -o NAME,SIZE,TYPE,MOUNTPOINT
   #If needed:
   #partprobe /dev/sda
2. Grow the LVM partition (sda2) to the end of the disk:
   dnf install -y cloud-utils-growpart
   growpart /dev/sda 2
   partprobe /dev/sda
3. Resize the LVM PV and extend the root LV:
   pvresize /dev/sda2
   lvextend -l +100%FREE /dev/fedora/root
4. Grow the filesystem:
   xfs_growfs /
5. Verify:
   lsblk -o NAME,SIZE,TYPE,MOUNTPOINT
   df -h /