Hi, When using librbd, one usually just gets a simple error code from RBD methods if something goes wrong, and those sometime have me guessing exactly what they could mean in a specific situation. While perusing librbd/internal.cc, I noticed that many of the methods in the background will produce more detailed error messages, like this line from snap_protect(): lderr(ictx->cct) << "snap_protect: image must support layering" << dendl; How do I access those more detailed error messages? Guido _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com