On Filestore you would flush the journal and then after mapping the new journal device use the command to create the journal. I'm sure there's something similar for bluestore, but I don't have any experience with it yet. Is there a new command similar to flush and create for the WAL and DB?
On Thu, Sep 7, 2017 at 12:03 PM Christoph Adomeit <Christoph.Adomeit@xxxxxxxxxxx> wrote:
To be mor eprecise, what I want to know is:
I have a lot of bluestore osds and now I want to add separate wal and db on new nvme partitions.
Would it be enough to just generate empty partitions with parted and make symlinks on the osd partition like this:
$ sudo ln -sf /dev/disk/by-partlabel/osd-device-0-db /var/lib/ceph/osd/ceph-0/block.db
$ sudo ln -sf /dev/disk/by-partlabel/osd-device-0-wal /var/lib/ceph/osd/ceph-0/block.wal
Shall I use special partition ids or flags for db and wal ? And how big should I make db and wal partitions ?
Thanks
Christoph
On Thu, Sep 07, 2017 at 09:57:16AM +0200, Christoph Adomeit wrote:
> Hi there,
>
> is it possible to move WAL and DB Data for Existing bluestore OSDs to separate partitions ?
>
> I am looking for a method to maybe take an OSD out, do some magic and move some data to new SSD Devices and then take the OSD back in.
>
> Any Ideas ?
>
> Thanks
> Christoph
>
>
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