selinux error in lxd/lxc: Could not create dir /var/lib/mock/rocky+epel-9-x86_64-bootstrap/root/sys/fs/selinux. Error: [Errno 30] Read-only file system

[sena73]

Short description of the problem

If I start mock in lxc or lxd container (rocky9/8, centos8/9), I get error 'Could not create dir /var/lib/mock/rocky+epel-9-x86_64-bootstrap/root/sys/fs/selinux. Error: [Errno 30] Read-only file system'

Currently the only way to workaround this problem is to install and configure selinux on the host system (which is Debian 12). Then the problem is gone, but I do not want that. Selinux is not working well on Debian and pollutes all logs, slows down the system.

I found old issue 258, which is similar but was not inside container...

Output of rpm -q mock

mock-5.5-1.el9.noarch

Steps to reproduce issue

1. Try to build rpm using mock inside lxc or lxd container with CentOS 8/9 or Rocky 8/9 inside Debian 12

mock --rebuild packagename.el9.src.rpm

ERROR: Could not create dir /var/lib/mock/rocky+epel-9-x86_64-bootstrap/root/sys/fs/selinux. Error: [Errno 30] Read-only file system: '/var/lib/mock/rocky+epel-9-x86_64-bootstrap/root/sys/fs/selinux'

Full error message

Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/mockbuild/file_util.py", line 20, in mkdirIfAbsent os.makedirs(dirName) File "/usr/lib64/python3.9/os.py", line 225, in makedirs mkdir(name, mode) OSError: [Errno 30] Read-only file system: '/var/lib/mock/rocky+epel-9-x86_64-bootstrap/root/sys/fs/selinux'

Any additional notes

Output of `mock --debug-config`

mock_debug_config.txt