On Wed, 01.07.15 22:22, Johannes Ernst (johannes.er...@gmail.com) wrote: > If I run systemd-nspawn with —ephemeral, it creates a new temporary > btrfs subvolume, the documentation says.
Correct. > Mine takes an awful long time — blocking IO on the device in the > awful long meantime — and I’m puzzled why. Does it perhaps copy > (deep? references only?) the entire drive? If the path you specifiy is not a btrfs subvolume itself then the code falls back to doing a deep copy into into a new btrfs subvolume. > Should I put the original directory on a separate subvolume, or how > can I speed this up? If I just copied the image / directory, this > might be faster. Yes, if the source is a subvolume of its own the code can take a snapshot efficiently. If it is just a normal subdir, then it has to copy. Lennart -- Lennart Poettering, Red Hat _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
