On Fri, Jun 30, 2017 at 8:31 AM, Martin Emrich <[email protected]>
wrote:

> Hi!
>
>
>
> I’d like to set up new OSDs with bluestore: the real data (“block”) on a
> spinning disk, and DB+WAL on a SSD partition.
>
>
>
> But I do not use ceph-deploy, and never used ceph-disk (I set up the
> filestore OSDs manually).
>
> Google tells me that ceph-disk does not (yet) support splitting the
> components across multiple block devices, I also had no luck while
> attempting it anyways. (using Ceph 12.1 RC1)
>

why not give ceph-deploy a chance, It has options to specify for db and wal
in command line. you dont have to worry about what options to pass to
ceph-disk as it encapsulates that

*ex: ceph-deploy osd create --bluestore --block-wal /dev/nvme0n1 --block-db
/dev/nvme0n1 p30:sdb*



>
>
> I just can’t find documentation on how to set up a bluestore OSD manually:
>
>
>
>    - How do I “prepare” the block, block.wal and block.db blockdevices?
>    Just directing ceph-osd to the block devices via ceph.conf does not seem to
>    be enough.
>    - Do bluestore OSDs still use/need a separate journal file/device? Or
>    ist that replaced by the WAL?
>
>
>
> http://docs.ceph.com/docs/master/ also has not very much information on
> using bluestore, is this documentation deprecated?
>

The document has fallen behind for manual deployment and ceph-deploy usage
for bluestore as well, but if you use the above command, it will clearly
throw out what it is doing and how ceph-disk is being called, those
are essentially manual steps that should go in document. I think we have a
tracker for update which is pending for sometime.


>
>
> Thanks for any hints,
>
>
>
> Martin
>
>
>
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