[libvirt] Virtio Balloon Dynamic behaviour ??

[Pankaj Rawat]

Hi all,

I want to be clear in details regarding Virtio balloon Driver in RHEL
6.1 KVM hypervisor

 

In documentations it is written that Virtio balloon driver allow the
guest to expand its memory dynamically .

 

Now I want to know the meaning of dynamically ...

Whether it means

1)      We can change the memory of guest using libvirt API only i.e by
using virsh setmem command at runtime  (VERIFIED)

2)      Or the guest itself can check that it is running out of memory
so it request host for some memory and when the host respond by giving
back memory it expands its memory size. Which is automation 

 

 

The 1st   option  is working fine 

 

Now can anyone tell me that memory expantion  can be done
dynamically(point 2) also

 




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