Le 17/12/2015 16:47, Misa a écrit :
Hello everyone, does it make sense to create SSD only pool from OSDs without journal? From my point of view, the SSDs are so fast that OSD journal on the SSD will not make much of a difference. Cheers Misa _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Actually, you can't, as the OSD journal is an implementation detail of Ceph's architecture.
It's not there only for performance benefits (i.e. writes are stored sequentially before acknowledgement), but also for integrity purposes, like in journalled filesystems.
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