On Wed, Feb 20, 2019 at 8:16 AM Анатолий Фуников
<[email protected]> wrote:
>
> Hello. I need to raise the OSD on the node after reinstalling the OS, some
> OSD were made a long time ago, not even a ceph-disk, but a set of scripts.
> There was an idea to get their configuration in json via ceph-volume simple
> scan, and then on a fresh system I can make a ceph-volume simple activate
> --file /etc/ceph/osd/31-46eacafe-22b6-4433-8e5c-e595612d8579.json
> I do ceph-volume simple scan /var/lib/ceph/osd/ceph-31/, and got this json:
> https://pastebin.com/uJ8WVZyV
> It seems everything is not bad, but in the data section I see a direct link
> to the device /dev/sdf1, and the uuid field is empty. At the same time, in
> the /dev/disk/by-partuuid directory I can find and substitute this UUID in
> this json, and delete the direct link to the device in this json.
> The question is: how correct is it and can I raise this OSD on a freshly
> installed OS with this fixed json?
It worries me that it is unable to find a uuid for the device. This is
important because paths like /dev/sdf1 are ephemeral and can change
after a reboot. The uuid is found by running the following:
blkid -s PARTUUID -o value /dev/sdf1
If that is not returning anything, then ceph-volume will probably not
be able to ensure this device is brought up correctly. You can correct
or add to anything in the JSON after a scan and rely on that, but then
again
without a partuuid I don't think this will work nicely
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