Re: [CentOS-virt] A question about memory ballooning

2011-05-07 Thread carlopmart
And the opposite question, can memory balloon be deallocated?? And is it possible to do this automatically or is an error to do this?? I think your understanding of ballooning may be backwards. The purpose of the balloon driver is to give the host system a way of recovering memory from the

Re: [CentOS-virt] A question about memory ballooning

2011-05-07 Thread Drew
The balloon driver allows guests to express to the hypervisor how much memory they require. The balloon driver allows the host to efficiently allocate memory to the guest and allow free memory to be allocated to other guests and processes. Guests using the balloon driver can mark sections of

Re: [CentOS-virt] A question about memory ballooning

2011-04-26 Thread James A. Peltier
- Original Message - | Hi all, | | How can I manage automatically memory ballooning under a kvm host | (C5.6 and future C6)?? For example if I define a kvm guest to boot up | with 512MB of RAM and I have configured 1GB as a maximum memory for | this | guest, how can I allocate this memory

Re: [CentOS-virt] A question about memory ballooning

2011-04-26 Thread Drew
 And the opposite question, can memory balloon be deallocated?? And is it possible to do this automatically or is an error to do this?? I think your understanding of ballooning may be backwards. The purpose of the balloon driver is to give the host system a way of recovering memory from the

Re: [CentOS-virt] A question about memory ballooning

2011-04-25 Thread carlopmart
On 04/25/2011 05:03 PM, Phil Schaffner wrote: carlopmart wrote on 04/23/2011 05:04 PM: ... How can I manage automatically memory ballooning under a kvm host (C5.6 and future C6)?? Looks like you got an answer to your nearly identical post on rhelv6-list:

[CentOS-virt] A question about memory ballooning

2011-04-23 Thread carlopmart
Hi all, How can I manage automatically memory ballooning under a kvm host (C5.6 and future C6)?? For example if I define a kvm guest to boot up with 512MB of RAM and I have configured 1GB as a maximum memory for this guest, how can I allocate this memory when guest will need it?? And the