Thanks Loris, So after client receiving ACK, if client makes a read request to this object immediately , does it have to wait for object written to file store, or read directly from journal?
2016-01-25 17:12 GMT+07:00 Loris Cuoghi <l...@stella-telecom.fr>: > > Le 25/01/2016 11:04, Sam Huracan a écrit : > > Hi Cephers, > > > > When an Ceph write made, does it write to all File Stores of Primary OSD > > and Secondary OSD before sending ACK to client, or it writes to journal > > of OSD and sending ACK without writing to File Store? > > > > I think it would write to journal of all OSD, so using SSD journal will > > increase write IOPS. > > Hi > > That's it, writes are acknowledged as soon as they're written to each > OSD's journal. > > Loris > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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