On Fri, Mar 23, 2018 at 12:14 AM, Yan, Zheng <ukernel@xxxxxxxxx> wrote: > > On Fri, Mar 23, 2018 at 5:14 AM, Josh Haft <paccrap@xxxxxxxxx> wrote: > > Hello! > > > > I'm running Ceph 12.2.2 with one primary and one standby MDS. Mounting > > CephFS via ceph-fuse (to leverage quotas), and enabled ACLs by adding > > fuse_default_permissions=0 and client_acl_type=posix_acl to the mount > > options. I then export this mount via NFS and the clients mount NFS4.1. > > > does fuse_default_permissions=0 work? Yes, ACLs work as expected when I set fuse_default_permissions=0. > > After doing some in-depth testing it seems I'm unable to allow access from > > the NFS clients to a directory/file based on group membership when the > > underlying CephFS was mounted with ACL support. This issue appears using > > both filesystem permissions (e.g. chgrp) and NFSv4 ACLs. However, ACLs do > > work if the principal is a user instead of a group. If I disable ACL support > > on the ceph-fuse mount, things work as expected using fs permissions; > > obviously I don't get ACL support. > > > > As an intermediate step I did check whether this works directly on the > > CephFS filesystem - on the NFS server - and it does. So it appears to be an > > issue re-exporting it via NFS. > > > > I do not see this issue when mounting CephFS via the kernel, exporting via > > NFS, and re-running these tests. > > > > I searched the ML and bug reports but only found this - > > http://tracker.ceph.com/issues/12617 - which seems close to the issue I'm > > running into, but was closed as resolved 2+ years ago. > > > > Has anyone else run into this? Am I missing something obvious? > > > > ceph-fuse does permission check according to localhost's config of > supplement group. that's why you see this behavior. You're saying both the NFS client and server (where ceph-fuse is running) need to use the same directory backend? (they are) I should have mentioned I'm using LDAP/AD on client and server, so I don't think that is the problem. Either way, I would not expect the behavior to change simply by enabling ACLs, especially when I'm using filesystem permissions, and ACLs aren't part of the equation. > Regards > Yan, Zheng > > > Thanks! > > Josh > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@xxxxxxxxxxxxxx > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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