I would think that rbd block are like stripes for RAID or blocks for hard drives, even if you only need to read or write 1k, the full stripe has to be read or write.
Cheers -- Cédric Lemarchand > Le 5 juin 2014 à 22:56, Timofey Koolin <timo...@koolin.ru> a écrit : > > Do for every read/write rbd read/write full block of data (4MB) or rbd can > read/wite part of block? > > For example - I have a 500MB file (database) and need random read/write by > blocks about 1-10Kb. > > Do for every read 1 Kb rbd will read 4MB from hdd? > for write? > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
