On Wed, Aug 01, 2018 at 12:53:58PM +0200, Markus Raps wrote:
Hello,
iam currently trying to run LXC Containers with libvirt but the memory limit doesn't want to work
in the container i see the full 32GB from the Host OS iam pretty sure that iam missing a configline in the xml
lxc-template ~ # free -m total used free shared buff/cache available Mem: 32108 626 31396 249 85 31396 Swap: 0 0 0 lxc-template ~ #
The 'free' command reports what is present in the host, which is distinct from what's made available to the container. This isn't unique to libvirt LXC containers - in fact any command that is runnning in a cgroup with memory controller limits applied will see the same behaviour. Apps can't assume that 'free' reflects the amount of memory that is available to them. Instead they need to look at cgroups memory controller that they are placed under (/proc/self/cgroups tells you where) Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|