Quoting Florian Klink ([email protected]): > Hi, > > I have the problem that filesystems mounted with lxc.hook.pre-mount stay > mounted the whole time, even after the container is stopped. > > According to my understandinding, mountpoints mounted by these hook > scripts will be private to the container and cleaned up on container > stop automatically (man lxc.container.conf): > > lxc.hook.pre-mount > A hook to be run in the container's fs namespace but before the rootfs > has been set up. This allows for manipulation of the rootfs, i.e. to > mount an encrypted filesystem. Mounts done in this hook will not be > reflected on the host (apart from mounts propagation), so they will be > automatically cleaned up when the container shuts down. > > > > However, I can see them when running `df` or `mount` on the host, and > they stay mounted even when the container is stopped (which creates > weird errors when you try to start the container again). > > > A bit more information about my setup: > > Arch Linux amd64, systemd 211, kernel 3.13.6 > > I created an archlinux "base image" > (using pacstrap -d /path/to/base-image base base-devel), and union-mount > it together with a cow/ directory to the new root. > > The hook looks similar to the provided "hooks/mountecryptfsroot": > > mount-aufs: > > #!/bin/sh > LXC_COW_PATH=$(echo $LXC_ROOTFS_PATH | sed 's/root$/cow/') > mount -n -t aufs none ${LXC_ROOTFS_PATH} -o br=${LXC_COW_PATH}=rw:$1=ro > > > container config: > > [...] > lxc.autodev = 1 > lxc.hook.pre-mount = /var/lib/lxc/container-name/mount-aufs > /path/to/base/image > lxc.rootfs = /var/lxc/containers/container-name/root > [...] > > > > I also tried to hook an lxc.hook.post-stop script that umounts it, but > that's also working not reliable... > > > Is this intended behaviour or a bug?
Sounds like your / is shared. (grep shared /proc/self/mountinfo). Perhas you can just 'mount --make-rslave /' at the top of the pre-mount hook. _______________________________________________ lxc-users mailing list [email protected] http://lists.linuxcontainers.org/listinfo/lxc-users
