2a0f1b2c7c
In one of my latest patch (v6.6.0~30) I was trying to remove libdevmapper use in favor of our own implementation. However, the code did not take into account that device mapper can be not compiled into the kernel (e.g. be a separate module that's not loaded) in which case /proc/devices won't have the device-mapper major number and thus virDevMapperGetTargets() and/or virIsDevMapperDevice() fails. However, such failure is safe to ignore, because if device mapper is missing then there can't be any multipath devices and thus we don't need to allow the deps in CGroups, nor create them in the domain private namespace, etc. Fixes: 22494556542c676d1b9e7f1c1f2ea13ac17e1e3e Reported-by: Andrea Bolognani <abologna@redhat.com> Reported-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>