start: cgroup compat: warn also to task log

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

diff --git a/src/lxc-pve-prestart-hook b/src/lxc-pve-prestart-hook
index f51b34cb33d44fc5b8a8b1710d0f12c4462bfb96..0a76aee90ed36837dcda4a269d784427404b6889 100755 (executable)
--- a/src/lxc-pve-prestart-hook
+++ b/src/lxc-pve-prestart-hook
@@ -138,7 +138,9 @@ PVE::LXC::Tools::lxc_hook('pre-start', 'lxc', sub {
     $lxc_setup->pre_start_hook();
 
     if (PVE::CGroup::cgroup_mode() == 2) {
-       if(!$lxc_setup->unified_cgroupv2_support()) {
+       if (!$lxc_setup->unified_cgroupv2_support()) {
+           log_warn($vmid, "old systemd (< v232) detected, container won't run in a pure cgroupv2"
+               ." environment! Please see documentation -> container -> cgroup version.");
            syslog('err', "CT $vmid does not support running in a pure cgroupv2 environment\n");
        }
     }