In order to be able to use project quota efficiently, it makes sense to be able to print the current project ID of a file, search for files owned by a specific project, as well as specify the project ID at file creation time.

This means adding a --project=ID option to lfs find to print only filenames that match the specified project ID.

For lfs getstripe the --project option will print out the project ID of the file, or directory, as I don't think there is any support for stat or ls to print out the project ID of a file or directory.

For lfs setstripe the --project=ID option will create the file with the specified project ID, if the user has permission to do so. I'm not 100% sure if this is needed - what is the planned user interface for setting the project ID of a new file or directory, besides inheriting the project ID from the parent?