#!/bin/bash

# define where to export
restorepath=/home/restore

# define path where your problematic osd mounted
osdpath=/var/lib/ceph/osd/ceph-3

# getting problem pgs
pgs=$(ceph health detail | grep ^pg | grep down | grep -v stuck | sort)
#echo "$pgs"

# cycling thourgh them
echo "$pgs" | while read -r pg; do
  # get pg id
  pgid=$(echo $pg | awk '{print $2}')
  # or simply restore on current machine
  ceph-objectstore-tool --op export --pgid $pgid --data-path $osd --journal-path /var/lib/ceph/osd/ceph-3/journal --file $restorepath/$pgid.export
done