Corrupted block.db for osd. How to extract particular PG from that osd?

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Hello cephers!

We're lost block.db file for one of our osd. This results in down osd and incomplete PG. Block file from osd, which symlinks to particular /dev folder is live and correct. 
My main question is there any thereoretical possibility to extract particular PG from osd which block.db device has been lost? Is there any way I can make it using ceph-objectstore-tool or ceph-bluestore-tool? We're running ceph version 12.2.12

--
Very truly yours,
Kalinkin Alexey
Research fellow of Epigenetic lab, RCMG.
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