util-linux v2.30 changed error message of a busy mount and caused
overlay/036 to fail. e.g.
- mount: <device> is already mounted or <mountpoint> busy
+ mount: <mountpoint>: <device> already mounted or mount point busy.
Filter the mount output by a newly introduced _filter_busy_mount
into a unified format.
mount: device already mounted or mount point busy
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Overlayfs is often used to mount several mounts that share a single
lower dir, but every overlayfs mount should have its own private
upperdir and private workdir.
Overlayfs mount on kernel <= v4.12 does not check if upper/work dirs
are currently in-use by another overlayfs mount on the system and bad
things can happen with such configuration.
Expect EBUSY when trying to mount overlay when:
- Upper dir is in-use by another overlay mount
- Work dir is in-use by another overlay mount
This test does not depend on the overlay index feature.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Eryu Guan
Amir Goldstein