d30197ef54
This replaces the current version with the latest version from the dm branch. Advantages in this version: We only scan each directory tree once, which means less i/o and less chance of container changes inbetween the two scans causing inconsistencies. We avoid comparing some fields for change detection: * Inode * size-in-blocks These can change during a copy operation (e.g. in the dummy backend) without needing to actually reflect a change in content or metadata. * Ctime Any copy operation will create a new Ctime value, and there is no API to change it to the "source" value. * size for directories The size of a directory doesn't have to be the same just because you recreated the same content as another director. Internal details in the filesystem may make these different with no "real" change. Upstream-commit: b6ef4bc9521346dc5066d71821c6cadfbeced9d3 Component: engine