Hi Ben, Thank you for getting back. According to this documentation [1] and the osds.yml [2] from the stable branches (3.x) , it appears that Ceph-Ansible is able to create separate partitions on different devices for the non-collocated scenario for both Filestore and Bluestore. The problem is that I could not find where to set the size for the WAL and DB partitions on the journal device. As per the Ceph documentation [3], the DB partition size should be no less than 4% of the underlying OSD capacity. I do not know how to take that aspect into configuration for Ceph-Ansible. [1] http://docs.ceph.com/ceph-ansible/master/osds/scenarios.html#non-collocated [2] https://github.com/ceph/ceph-ansible/blob/stable-3.0/group_vars/all.yml.sample [3] http://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/#sizing Regards, Cody On Sun, Aug 19, 2018 at 7:59 PM Benjamin Cherian <benjamin.cherian@xxxxxxxxx> wrote: > > Hi Cody, > > AFAIK, Ceph-ansible will not create separate partitions for the non-collocated scenario (at least in the stable branches). Given, that ceph-volume is now the recommended way of creating OSDs, you would want to create all the logical volumes and volume groups you intend to use for data, DB and WAL prior to running ceph ansible. I believe there may be some new stuff just added in master related to LVM management. However, it appears to be targeted to clusters which still use Filestore journals instead of Blustore. > Regards, > > Ben _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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