I found a CentOS 6.4 machine which has QEMU 1.5.3, and copied the ppcrhel5.img to that machine, and tested, found it's reliable, and no such file and filesystem easy corruption issue. So, it's the 1.6.2 and 1.7.0 have the problem.
I found a CentOS 6.4 machine which has QEMU 1.5.3, and copied the ppcrhel5.img to that machine, and tested, found it's reliable, and no such file and filesystem easy corruption issue. So, it's the 1.6.2 and 1.7.0 have the problem.