I am getting an error in the log.smbd from the Samba gateway that I don’t understand and looking for help from anyone who has gotten the vfs_ceph working. Background: I am trying to get a Samba gateway with CephFS working with the vfs_ceph module. I observed that the default Samba package on CentOS 7.7 did not come with the ceph.so vfs_ceph module, so I tried to compile a working Samba version with vfs_ceph. Newer Samba versions have a requirement for GnuTLS >= 3.4.7, which is not an available package on CentOS 7.7 without a custom repository. I opted to build an earlier version of Samba. On CentOS 7.7, I built Samba 4.11.16 with [global] security = user map to guest = Bad User username map = /etc/samba/smbusers log level = 4 load printers = no printing = bsd printcap name = /dev/null disable spoolss = yes [cryofs_upload] public = yes read only = yes guest ok = yes vfs objects = ceph path = /upload kernel share modes = no ceph:user_id = samba.upload ceph:config_file = /etc/ceph/ceph.conf I have a file at /etc/ceph/ceph.conf including: fsid = redacted mon_host = redacted auth_cluster_required = cephx auth_service_required = cephx auth_client_required = cephx I have an /etc/ceph/client.samba.upload.keyring /w key for the user `samba.upload` However, connecting fails: smbclient \\\\localhost\\cryofs_upload -U guest Enter guest's password: tree connect failed: NT_STATUS_UNSUCCESSFUL The log.smbd gives these errors: Initialising custom vfs hooks from [ceph] [2020/11/11 17:24:37.388460, 3] ../../lib/util/modules.c:167(load_module_absolute_path) load_module_absolute_path: Module '/usr/local/samba/lib/vfs/ceph.so' loaded [2020/11/11 17:24:37.402026, 1] ../../source3/smbd/service.c:668(make_connection_snum) make_connection_snum: SMB_VFS_CONNECT for service 'cryofs_upload' at '/upload' failed: No such file or directory There is an /upload directory for which the samba.upload user has read access to in the CephFS. What does this error mean: ‘no such file or directory’ ? Is it that vfs_ceph isn’t finding `/upload` or is some other file depended by vfs_ceph not been found? I have also tried to specify a local path rather than a CephFS path and will get the same error. Is there any good guide that describes not just the Samba smb.conf, but also what should be in /etc/ceph/ceph.conf, and how to provide the key for the ceph:user_id ? I am really struggling to find good first-hand documentation for this. Thanks, Matt -- Matt Larson, PhD Madison, WI 53705 U.S.A.