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With this CRIU will bind mount the /foo into proper mountpoint.
With this CRIU will bind mount the /foo into proper mountpoint.
Note: Mounts from same superblock should remain mounts from same superblock after migration. Options `--external mnt[smth]:/smth` force criu to bindmount from the provided source, that can lead to mounts, which were from the same supperblock before dump, appear to be from different supperblock after restore, which is wrong so these option should be used carefully (can break sharing groups restore).
== Auto detection ==
== Auto detection ==
- External sharing is not supported (converted to internal sharing after c/r) as reasonable container environments should not allow it due to security reasons, and implementing it's lookup would lead to bad performance (host mountinfo reading).
- External sharing is not supported (converted to internal sharing after c/r) as reasonable container environments should not allow it due to security reasons, and implementing it's lookup would lead to bad performance (host mountinfo reading).
- External slavery is supported for mountpoint external mounts and the root mount. It is detected when criu can't lookup master_id of the mount across shared_ids in container mount namespaces. CRIU relies that mountpoint external source provides right shared/slave mount to copy sharing from. Everything else is considered as internal sharing/slavery.
- External slavery is supported for mountpoint external mounts and the root mount. It is detected when criu can't lookup master_id of the mount across shared_ids in container mount namespaces. CRIU relies that mountpoint external source provides right shared/slave mount to copy sharing from. Everything else is considered as internal sharing/slavery.