On Tue, Oct 10, 2017 at 3:28 AM, Stefan Kooman <stefan@xxxxxx> wrote: > Hi, > > Quoting Alfredo Deza (adeza@xxxxxxxxxx): >> Hi, >> >> Now that ceph-volume is part of the Luminous release, we've been able >> to provide filestore support for LVM-based OSDs. We are making use of >> LVM's powerful mechanisms to store metadata which allows the process >> to no longer rely on UDEV and GPT labels (unlike ceph-disk). >> >> Bluestore support should be the next step for `ceph-volume lvm`, and >> while that is planned we are thinking of ways to improve the current >> caveats (like OSDs not coming up) for clusters that have deployed OSDs >> with ceph-disk. > > I'm a bit confused after reading this. Just to make things clear. Would > bluestore be put on top of a LVM volume (in an ideal world)? Has > bluestore in Ceph luminious support for LVM? I.e. is there code in > bluestore to support LVM? Or is it _just_ support of `ceph-volume lvm` > for bluestore? There is currently no support in `ceph-volume lvm` for bluestore yet. It is being worked on today and should be ready soon (hopefully in the next Luminous release). And yes, in the case of `ceph-volume lvm` it means that bluestore would be "on top" of LVM volumes. > >> --- New clusters --- >> The `ceph-volume lvm` deployment is straightforward (currently >> supported in ceph-ansible), but there isn't support for plain disks >> (with partitions) currently, like there is with ceph-disk. >> >> Is there a pressing interest in supporting plain disks with >> partitions? Or only supporting LVM-based OSDs fine? > > We're still in a green field situation. Users with an installed base > will have to comment on this. If the assumption that bluestore would be > put on top of LVM is true, it would make things simpler (in our own Ceph > ansible playbook). There is already support in ceph-ansible too, which will mean that when bluestore support is added, it will be added in ceph-ansible at the same time. > > Gr. Stefan > > -- > | BIT BV http://www.bit.nl/ Kamer van Koophandel 09090351 > | GPG: 0xD14839C6 +31 318 648 688 / info@xxxxxx -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
