[libvirt] [PATCH] lxc: fix setmem effect on a running LXC machine

[Michal Privoznik]

On 24.10.2014 11:17, Erik Skultety wrote:
> When user calls setmem on a running LXC machine, we do update its cgroup
> entry (which is in odds with the original bug report, possibly resolved
> by later versions), however we neither update domain's runtime XML nor
> we update our internal structures and this patch fixes it.
>
> Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1131919
> ---
>   src/lxc/lxc_driver.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
> index b3e506f..03a00a9 100644
> --- a/src/lxc/lxc_driver.c
> +++ b/src/lxc/lxc_driver.c
> @@ -749,6 +749,10 @@ static int lxcDomainSetMemoryFlags(virDomainPtr dom, unsigned long newmem,
>                                  "%s", _("Failed to set memory for domain"));
>                   goto cleanup;
>               }
> +
> +            vm->def->mem.cur_balloon = newmem;
> +            if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0)
> +                goto cleanup;
>           }
>
>           if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
>

I guess the qemu driver suffers the same bug, doesn't it?

Michal