No, it's not possible to recover from a *completely dead* block.db, it contains all the metadata (like... object names) Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 On Tue, Oct 15, 2019 at 6:02 PM Alexey Kalinkin <akalinkin@epigenetic.ru> wrote:

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. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io