Hi Sherry go to this page in order to look at the description for show_layout and set_layout which will do what you are seeking for: https://ceph.com/docs/master/man/8/cephfs/ Cheers JC On May 24, 2014, at 21:49, Sherry Shahbazi <shoosah at yahoo.com> wrote: > Hi all, > > I appreciate if anyone could let me know: > > 1) How to check CephFS block size (It seems to be 4 MB which is really high)? > 2) How to change CephFS default block size? I had a look at the following link but it seems that no option is provided for specifying block size! > https://ceph.com/docs/master/man/8/mount.ceph/#options > > Thanks, > Sherry > _______________________________________________ > ceph-users mailing list > ceph-users at lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com