On Sat, Oct 15, 2016 at 1:36 AM, Heller, Chris <chel...@akamai.com> wrote: > Just a thought, but since a directory tree is a first class item in cephfs, > could the wire protocol be extended with an “recursive delete” operation, > specifically for cases like this?
In principle yes, but the problem is that the POSIX filesystem interface doesn't have a recursive delete operation (we just see a series of individual unlinks), so the complicated part would be making the client clever enough to notice when a series of unlink operations appear to be traversing a particular directory, and batching them up until all files in a directory are unlinked, and then finally sending a recursive unlink message to the server. John > > On 10/14/16, 4:16 PM, "Gregory Farnum" <gfar...@redhat.com> wrote: > > On Fri, Oct 14, 2016 at 1:11 PM, Heller, Chris <chel...@akamai.com> wrote: > > Ok. Since I’m running through the Hadoop/ceph api, there is no syscall > boundary so there is a simple place to improve the throughput here. Good to > know, I’ll work on a patch… > > Ah yeah, if you're in whatever they call the recursive tree delete > function you can unroll that loop a whole bunch. I forget where the > boundary is so you may need to go play with the JNI code; not sure. > -Greg > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
