Just to follow up...
I was able to use a per-osd device copy to migrate nearly 80 FileStore
osds to BlueStore using a version of the script in:
https://tracker.ceph.com/issues/47839
Cheers,
Chris
On Fri, Oct 09, 2020 at 12:05:32PM +1100, Chris Dunlop wrote:
> Hi,
>
> The docs have scant detail on doing a migration to bluestore using a
> per-osd device copy:
>
>
https://docs.ceph.com/en/latest/rados/operations/bluestore-migration/#per-o…
>
> This mentions "using the copy function of ceph-objectstore-tool", but
> ceph-objectstore-tool doesn't have a copy function (all the way from
> v9 to current).
>
> Has anyone actually tried doing this?
>
> Is there any further detail available on what is involved, e.g. a
> broad outline of the steps?
>
> Of course, detailed instructions would be even better, even if
> accompanied by "here be dragons!" warnings.
>
> Cheers,
>
> Chris