If it is true,why we still have no journal mode in the code? Thanks
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在2015年12月18日 00:43，Loris Cuoghi 写道:
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
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> 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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