Hi John, Thanks for the information. Unfortunately my python knowledge is very very basic and I have already developed a wrapper of libcephfs for Go for some basic operation so I will first include it there. I only was wondering if the RESTful API would expose this information already or with some special mds command I could fetch such information. Best, Martin On Wed, Apr 18, 2018 at 9:49 AM, John Spray <jspray@xxxxxxxxxx> wrote: > On Wed, Apr 18, 2018 at 8:17 AM, Martin Palma <martin@xxxxxxxx> wrote: >> Hello, >> >> Is it possible to get directory/file layout information (size, pool) >> of a CephFS directory directly from a metadata server without the need >> to mount the fs? Or better through the restful plugin... >> >> When mounted I can get infos about the directory/file layout using the >> getfattr command... > > You can avoid a local filesystem mount by using libcephfs (has python > bindings) for this kind of thing. You might find it useful to refer > to src/pybind/ceph_volume_client.py , which uses libcephfs to do > various bits of directory and layout manipulation. > > A libcephfs instance looks like a mount to the server, but from the > client side it's completely self contained, doesn't touch any of the > VFS or fuse stuff. > > If you were writing this code, it would be really neat to write it as > a ceph-mgr python module[1] that implements some command line > operations for getting filesystem stats. > > John > > 1. http://docs.ceph.com/docs/master/mgr/plugins/ > >> >> Best, >> Martin >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
