Why avoid cache tier? Does this only for erasure or for replicated too?
вс, 26 Авг 2018, 7:42 Konstantin Shalygin <k0ste@xxxxxxxx>:
> Configuration:
> rbd - erasure pool
> rbdtier - tier pool for rbd
>
> ceph osd tier add-cache rbd rbdtier 549755813888
> ceph osd tier cache-mode rbdtier writeback
>
> Create new rbd block device:
> rbd create --size 16G rbdtest
> rbd feature disable rbdtest object-map fast-diff deep-flatten
> rbd device map rbdtest
>
> And fill in rbd0 by data (dd, fio and like).
>
> Remove rbd block device:
> rbd device unmap rbdtest
> rbd rm rbdtest
>
> And now pool usage look like:
>
> POOLS:
> NAME ID USED %USED MAX AVAIL OBJECTS
> rbd 9 16 GiB 0 0 B 4094
> rbdtier 14 104 KiB 0 1.7 TiB 5110
Avoid cache-tier configurations. Write rbd objects to EC pool directly
since luminous clients.
k
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
