On Thu, 7 Jul 2016 09:57:44 +0800 秀才 wrote: > Hi, All:) > > > When we make an OSD, SAS/SATA as data and SSD(or a partition) as journal > usuanlly. > > > So, pure SSD OSD, also need journal? > Of course.
The journal is needed for data consistency with filestore. This will go away with bluestore, but then you might still want fast (NVMe even) storage for bluestore rocksdb and hot objects. Christian -- Christian Balzer Network/Systems Engineer ch...@gol.com Global OnLine Japan/Rakuten Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
