[PATCH] xfsdump: incremental dump directory selection

[Christoph Hellwig]

On Fri, Oct 21, 2011 at 11:35:33AM -0500, Bill Kendall wrote:
> When doing incremental backups, xfsdump does a recursive scan through
> the filesystems to determine the proper set of unchanged directories
> to include in the dump in order to make the dump self-contained
> (allowing files to be restored from this dump without applying the
> base dumps first).
> 
> For high-inode count filesystems, the recursive scan may consume a
> significant portion of the backup time. This patch adds a -D option
> which causes xfsdump to skip the recursive scan. Unchanged directories
> will not be dumped, so the base dump(s) will have to be loaded prior
> to restoring files from the dump. When restoring files from such a
> dump, a message is issued to alert the user that files may end up in
> the orphanage if the base dump(s) has not been applied.

Any chance you could submit some xfstests coverage for this feature?