Re: Small modifications to Bluestore migration documentation

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On Tue, Feb 27, 2018 at 6:55 AM, Alexander Kushnirenko
<kushnirenko@xxxxxxxxx> wrote:
> Hello,
>
> Luminous 12.2.2
>
> There were several discussions on this list concerning Bluestore migration,
> as official documentation does not work quite well yet. In particular this
> one
> http://lists.ceph.com/pipermail/ceph-users-ceph.com/2018-January/024190.html
>
> Is it possible to modify official documentation
> http://docs.ceph.com/docs/master/rados/operations/bluestore-migration/
>
> Item 8
> ceph osd destroy $ID --yes-i-really-mean-it
> ADD COMMAND
> ceph osd purge $ID  --yes-i-really-mean-it

Why do you think it would be necessary to purge? Keeping the ID (which
destroy does) is what we want here.

>
> Item 9
> REPLACE (There is actually a typo - lvm is missing)
> ceph-volume create --bluestore --data $DEVICE --osd-id $ID
> WITH
> ceph-volume lvm create --bluestore --data $DEVICE
>
> ceph-volume will automatically pick previous osd-id

The missing lvm is a great catch, thanks for pointing that out. I have
created http://tracker.ceph.com/issues/23148 to follow up on this.

There is no longer a need to avoid using --osd-id as that bug has been
fixed in 12.2.3 and is available right now.
>
> PLUS a note to ignore errors ( _read_bdev_label unable to decode label at
> offset 102) https://tracker.ceph.com/issues/22285

This has also been fixed and released.

>
> Alexander.
>
>
>
>
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> ceph-users@xxxxxxxxxxxxxx
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>
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