I tried booting with the qemu and observed the same thing.
qemu-system-x86_64 /home/images/rhel64-64.qcow2 -drive if=none,id=hd,file=/home/images/virtio-scsi11.img -device virtio-scsi-pci,id=scsi --enable-kvm -device scsi-hd,drive=hd -m 2000
After creating the filesystem tried running the iozone and noticed disk out of space issue.
I tried booting with the qemu and observed the same thing.
qemu-system-x86_64 /home/images/ rhel64- 64.qcow2 -drive if=none, id=hd,file= /home/images/ virtio- scsi11. img -device virtio- scsi-pci, id=scsi --enable-kvm -device scsi-hd,drive=hd -m 2000
After creating the filesystem tried running the iozone and noticed disk out of space issue.