Bug 707147

Description of problem:
Suppose the memory value of "change allocation" and "maximum allocation" is both "1024". Modify the "change allocation" is "512", and it will be "1024" after the guest is powered on; Modify the "Maximum allocation" from "1024" to "2048", the value of "change allocation" and "maximum allocation" will be both "2048"; Then modify "change allocation" to "1024", apply, and modify "maximum allocation" to "1024", the value of "change allocation" and "maximum allocation" will also be "2048". This problem is not existed in rh6.1.

Version-Release number of selected component (if applicable):
libvirt-0.8.2-20.el5
virt-manager-0.6.1-14.el5
kernel-2.6.18-262.el5

How reproducible:
always

Steps to Reproduce:
Suppose "CA" is the abbreviation of memory "change allocation"; and "MA" is the abbreviation of memory "maximum allocation". Suppose the original value of "CA" and "MA" of a gues is both "1024"
1.Modify "CA" and "MA" from "1024","1024" to "512" "1024"; 

2.Modify "CA" and "MA" from "1024","1024" to "512" "2048";

3.Modify "CA" and "MA" from "2048","2048" to "512" "512";

3.Modify "CA" and "MA" from "2048","2048" to "512" "5120";

  
Actual results:
1. The value of "CA" and "MA" is "1024", "1024"

2. The value of "CA" and "MA" is "2048", "2048"

3. The value of "CA" and "MA" is "2048", "2048"

4. The value of "CA" and "MA" is "5120", "5120"

Expected results:
1. The value of "CA" and "MA" is "512", "1024"

2. The value of "CA" and "MA" is "512", "2048"

3. The value of "CA" and "MA" is "512", "512"

4. The value of "CA" and "MA" is "512", "5120"

Additional info: