Bug#976190: systemd: LXC memory limits messed up after some time

[Paul Slootman]

Hi,

On Tue 01 Dec 2020, Michael Biebl wrote:
> > 
> > root at dns:~# free
> >                total        used        free      shared  buff/cache   available
> > Mem:        1048576       41660     1006784       48124         132     1006784
> > Swap:             0           0           0
> > 
> > 
> > After some time, I have noticed that they are no longer correct; in fact
> > they are wildly wrong:
> > 
> > root at dns:~# free
> >                total        used        free      shared  buff/cache   available
> > Mem:    9007199254740991      598372 9007199254108535       85652       34084 9007199254108535
> > Swap:             0        1692       -1692
> > 
> 
> I suppose, this is from within the container?

Yes, correct

> How do you apply/setup the limits?

This is in the libvirt container definition:

<domain type='lxc'>
  <name>dns</name>
  <uuid>32bd6117-0082-49eb-b622-87e1de716c88</uuid>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
  <memtune>
    <hard_limit unit='KiB'>1048576</hard_limit>
    <soft_limit unit='KiB'>1048576</soft_limit>
    <swap_hard_limit unit='KiB'>1048576</swap_hard_limit>
  </memtune>
  <vcpu placement='static'>1</vcpu>


Paul