On Wed, Jun 13, 2018 at 3:34 AM Webert de Souza Lima <webert.boss@xxxxxxxxx> wrote: > > hello, > > is there any performance impact on cephfs for using file layouts to bind a specific directory in cephfs to a given pool? Of course, such pool is not the default data pool for this cephfs. > For each file, no matter which pool file data are stored, mds alway create an object in the default data pool. The object in default data pool is used for storing backtrace. So files stored in non-default pool have extra overhead on file creation. For large file, the overhead can be neglect. But for lots of small files, the overhead may affect performance. > Regards, > > Webert Lima > DevOps Engineer at MAV Tecnologia > Belo Horizonte - Brasil > IRC NICK - WebertRLZ > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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