usefull to see current statuses for all pgs in current backfill/recover process
bf.py -h
usage: bf.py [-h] [-o OSD] [-s STATE] [-c CLUSTER] [-f]
options:
-h, --help show this help message and exit
-o OSD, --osd OSD set osd
-s STATE, --state STATE
state osd
-c CLUSTER, --cluster CLUSTER
cluster name
-f, --file use file instead of output (ONLY FOR LOCAL DEBUG RUN)