On Sun, Dec 25, 2016 at 3:33 AM, w...@42on.com <w...@42on.com> wrote: > > >> Op 24 dec. 2016 om 17:20 heeft L. Bader <ceph-us...@lbader.de> het volgende >> geschreven: >> >> Do you have any references on this? >> >> I searched for something like this quite a lot and did not find anything... >> > > No, saw it somewhere on the ML I think, but I am not sure. > > I just know it is in development or on a todo somewhere.
Already done I believe. http://docs.ceph.com/docs/master/rados/troubleshooting/troubleshooting-mon/#recovery-using-osds HTH. > >> >>> On 24.12.2016 14:55, w...@42on.com wrote: >>> >>>> Op 24 dec. 2016 om 14:47 heeft L. Bader <ceph-us...@lbader.de> het >>>> volgende geschreven: >>>> >>>> Hello, >>>> >>>> I have a problem with our (dead) Ceph-Cluster: The configuration seems to >>>> be gone (deleted / overwritten) and all monitors are gone aswell. However, >>>> we do not have (up-to-date) backups for all VMs (used with Proxmox) and we >>>> would like to recover them from "raw" OSDs only (we have all OSDs mounted >>>> on one Storage Server). Restoring the cluster itself seems impossible. >>>> >>> Work is on it's way iirc to restore MONs from OSD data. >>> >>> You might want to search for that, the tracker or Github might help. >>> >>>> To recover the VM images I tried to write a simple tool that: >>>> 1) searches all OSDs for udata files >>>> 2) Sorts them by Image ID >>>> 3) Sorts them by "position" / offset >>>> 4) Assembles the 4MB blocks to a single file using dd >>>> >>>> (See: https://gitlab.lbader.de/kryptur/ceph-recovery/tree/master ) >>>> >>>> However, for many (nearly all) images there are missing blocks (empty >>>> parts I guess). So I created a 4MB block of Null-Bytes for each missing >>>> parts. >>>> >>>> The problem is that the created Image is not usable. fdisk detects >>>> partitions correctly, but we cannot access the data in any way. >>>> >>>> Is there another way to recover the data without having any (working) ceph >>>> tools? >>>> >>>> Greetings and Merry Christmas :) >>>> >>>> Lennart >>>> >>>> _______________________________________________ >>>> ceph-users mailing list >>>> ceph-users@lists.ceph.com >>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Cheers, Brad _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
