Sometimes users know that particular data pool PGs
have been damaged, and they would like to scan
their files to work out which ones might have
been affected.
Fixes: http://tracker.ceph.com/issues/17249
Signed-off-by: John Spray <john.spray@redhat.com>
These are deliberately fairly sparse, because:
* These tools are for experts
* These tools may well be wrapped in a higher
level recovery tool that orchestrates parallel
workers at some stage.
Signed-off-by: John Spray <john.spray@redhat.com>