Re: UID reset to root after chgrp on CephFS Ganesha export

[Daniel Gryniewicz <dang@xxxxxxxxxx>]

On 08/31/2016 02:15 PM, Wido den Hollander wrote:
> > Op 31 augustus 2016 om 15:28 schreef Daniel Gryniewicz <dang@xxxxxxxxxx>:
> >
> >
> > I believe this is a Ganesha bug, as discussed on the Ganesha list.
>
> Ah, thanks. Do you maybe have a link or subject so I can chime in?
>
> Wido

https://sourceforge.net/p/nfs-ganesha/mailman/message/35321818/

Daniel

> > Daniel
> >
> > On 08/31/2016 06:55 AM, Wido den Hollander wrote:
> > > > Op 31 augustus 2016 om 12:42 schreef John Spray <jspray@xxxxxxxxxx>:
> > > >
> > > >
> > > > On Wed, Aug 31, 2016 at 11:23 AM, Wido den Hollander <wido@xxxxxxxx> wrote:
> > > > > Hi,
> > > > >
> > > > > I have a CephFS filesystem which is re-exported through NFS Ganesha (v2.3.0) with Ceph 10.2.2
> > > > >
> > > > > The export works fine, but when calling a chgrp on a file the UID is set to root.
> > > > >
> > > > > Example list of commands:
> > > > >
> > > > > $ chown www-data:www-data myfile
> > > > >
> > > > > That works, file is now owned by www-data/www-data
> > > > >
> > > > > $ chgrp nogroup myfile
> > > >
> > > > Does the nogroup group have GID -1 by any chance?  There is a bug in
> > > > the userspace client where it doesn't handle negative gid/uids
> > > > properly at all, which Greg is working on at the moment
> > > > (http://tracker.ceph.com/issues/16367)
> > >
> > > No, it doesn't. nogroup is just an example here. This happens with any group.
> > >
> > > The UID is always set back to 0.
> > >
> > > Wido
> > >
> > > > John
> > > >
> > > > > That files, the UID is now set to 0 (root) and the group hasn't changed.
> > > > >
> > > > > I tracked this down to being a Ganesha problem in combination with CephFS. Running these commands on either a kernel mounted CephFS or via FUSE I don't see this problem.
> > > > >
> > > > > The Ganesha configuration:
> > > > >
> > > > > NFSv4
> > > > > {
> > > > >         IdmapConf = /etc/idmapd.conf;
> > > > > }
> > > > >
> > > > > EXPORT
> > > > > {
> > > > >     Export_ID = 1;
> > > > >     Path = "/";
> > > > >     Pseudo = "/";
> > > > >     Access_Type = RW;
> > > > >     Protocols = "4";
> > > > >     Squash = no_root_squash;
> > > > >     Transports = TCP;
> > > > >     SecType = sys;
> > > > >
> > > > >     FSAL {
> > > > >         Name = CEPH;
> > > > >     }
> > > > > }
> > > > >
> > > > > Has anybody seen this before?
> > > > >
> > > > > Wido
> > > > > _______________________________________________
> > > > > 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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> > ceph-users@xxxxxxxxxxxxxx
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

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