The test packs cpio and tar archives with gzip, xz and pigz, and squashfs
images, on the Red Hat path. A wrapper around the compressor, mksquashfs,
cpio or find records the file under the final name while the pack runs,
and then runs the real tool or fails.
It checks that nodes get the previous archive during the pack, that a
pack whose compressor, cpio or file listing fails keeps the previous
archive, metainfo and other formats, that a successful pack replaces
them, and that no temporary file is left. The next pack removes a
temporary file or directory that an interrupted pack on the same host
left, and keeps one that another host is writing.
For a StateLite tree, it checks that a pack that fails while listing the
files, compressing them or creating the temporary directory restores the
files that packimage switched, and that a retry keeps them. When a file
cannot be moved back, the original and the previous archive must stay,
and the next pack must refuse to run.
A pack must wait while another host holds .packimage-publish. When a
pack that did not finish left the lock, the next pack must fail, name the
holder, and keep the previous archive and the lock. With --tracker,
ctorrent must build the metainfo from the new archive under its final
name before the archive is replaced. A ctorrent failure must keep the
previous archive and metainfo, and so must a previous metainfo that
cannot be removed.
Vinícius Ferrão