I think I can get it to take care of it if I ensure the file it wants isn't in MFS at all, and it isn't pinned, and then I do GC, but it's hard to guarantee that because this can happen:

1. File gets created `file1`
2. File gets renamed to `file2`
3. Filestore looks for the data stored in `file2`, at the path for `file1`, HOWEVER doesn't explicitly say that it's looking for `file2`, just that it can't find `file1`