On 07/04/2014 03:18 PM, Claudio Bley wrote: > At Thu, 03 Jul 2014 17:46:14 +0300, > Gleb Voronich wrote: >> >> >>> virDomainMemoryStats() gets those stats, if qemu is new enough to >>> provide them, and if the guest cooperates to provide them. >> Well I use the latest QEMU 2.0.0 >> I have the latest CentOS 6.5 installed on the guest and unfortunately >> I can't get more stats that I have. >> >>> Which OS are you using in your guests? >>> >>> Of course, you need to have the virtio balloon driver up and runnig in >>> your guests. >> CentOS 6.5 x86_64 >> It has the balloon driver and it is up and running: >> >> # modinfo virtio_balloon >> filename: >> /lib/modules/2.6.32-431.17.1.el6.x86_64/kernel/drivers/virtio/virtio_balloon.ko >> license: GPL >> description: Virtio balloon driver >> srcversion: BB9F75B2CAF3435CC507998 >> alias: virtio:d00000005v* >> depends: virtio,virtio_ring >> vermagic: 2.6.32-431.17.1.el6.x86_64 SMP mod_unload modversions > > In this case, it's your guest kernel that's too old to support these > stats. > > Apparently, reporting statistics in the balloon driver was introduced > in the kernel on 24th Feb 2010 (commit > 9564e138b1f6eb137f7149772438d3f3fb3277dd) which clearly predates > version 2.6.32 (2nd December 2009). Acording to the kernel RPM's changelog, this was backported into 2.6.32-38.el6 and released in RHEL 6.0 (Nov 2010): https://bugzilla.redhat.com/show_bug.cgi?id=601690 Jan
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