We have investigated some memory issues on our servers and found that the cgroup_tree_remove function gets permission denied while trying to destroy containers:
lxc rico-02941862 20221025015932.108 WARN cgfsng - ../src/src/lxc/cgroups/cgfsng.c:cgroup_tree_remove:489 - Permission denied - Failed to destroy 10(lxc.payload.rico-02941862)
Removing these manually could free up some memory, so definitely this is partially responsible for our problem.
$ uname -a Linux 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux $ lxc --version 5.6
How can we investigate this further and possibly resolve this issue?
Thank you in advance for the help.