We first added error to not allow overlay with selinux enabled. Then later
we removed it as kernel was getting close to get the support. But this
means user does not get meaningful message on old kernels.
This patch introduces a warning (Instead of error). Difference is that it
dynamically tries to detect if underlying kernel supports overlayfs with
selinux or not. And if it does not, it warns.
It will not warn if it detects that kernel supports overlayfs with selinux.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: 885b29df096db1d6746ece4b3a298a1ffe85716d
Component: engine
bcbcfef3bc