Re: [libvirt] Libvirt's DomainGetInfo Function Development
On Fri, 2016-08-05 at 17:45 +0500, Aleem Akhtar wrote:
Ok. So that's why I was getting 1 GB as a result.
So is there any way I can get memory in used
programmatically?
I mean without going inside guest domain.
The only way I can come up with at the moment relies on
qemu-guest-agent:
$ virsh qemu-agent-command guest \
'{"execute": "guest-exec",
"arguments": {"path": "/usr/bin/free",
"capture-output": true}}'
{"return":{"pid":1425}}
$ virsh qemu-agent-command guest \
'{"execute": "guest-exec-status",
"arguments": {"pid": 1425}}'
{"return":{"exitcode":0,"out-data":"ICA...zIK","exited":true}}
$ echo 'ICA...zIK' | base64 -d
total used free
Mem: 4020408 97244 3359560
Swap: 1048572 0 1048572
Of course you'll need to have qemu-guest-agent running
inside the guest and process all the resulting information
yourself.
See the virDomainQemuAgentCommand() API.
--
Andrea Bolognani / Red Hat / Virtualization