hello
if we create a qcow2 file on a block dev.
we can,t get the right disk size by qemu-img info。
[root@host-120-79 qemu]# ./qemu-img create -f qcow2 /dev/zs/lvol0 1G
Formatting '/dev/zs/lvol0', fmt=qcow2 size=1073741824 cluster_size=65536
lazy_refcounts=off refcount_bits=16
[root@host-120-79 qemu]# ./qemu-img info /dev/zs/lvol0
image: /dev/zs/lvol0
file format: qcow2
virtual size: 1.0G (1073741824 bytes)
disk size: 0
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
Then we get disk size from L1 table and L2 table in
qcow2_get_allocated_file_size.
May be we can submit the patch to qemu master??
