[Samba] Samba 4.15.3 - inotify and fget_ea_dos_attribute errors

[Jeremy Allison]

On Tue, Jan 18, 2022 at 04:54:59PM +0000, Paul Griffith via samba wrote:
>Hello,
>
>I recently updated our AD joined file server to Samba 4.15.3, I am noticing some errors in the log file. They may be nothing but it could be something.
>
>File server:   CentOS Linux release 7.9.2009 (Core)
>
>#1 -   inotify_add_watch returned Permission denied
>
>What would cause this error? I checked the permissions on the directory in question, and it is 711,  and ownership is correct.  Any suggestions to further debug?
>
>[2022/01/18 11:16:09.113410,  1, pid=27967, effective(0, 0), real(0, 0)] ../../source3/smbd/notify_inotify.c:442(inotify_watch)
>  inotify_add_watch returned Permission denied
>[2022/01/18 11:16:09.113509,  1, pid=27967, effective(0, 0), real(0, 0)] ../../source3/smbd/notifyd/notifyd.c:437(notifyd_apply_rec_change)
>  notifyd_apply_rec_change: sys_notify_watch for [/eecs/home/paulg] returned Permission denied
>[2022/01/18 11:16:09.159720,  1, pid=27967, effective(0, 0), real(0, 0)] ../../source3/smbd/notify_inotify.c:442(inotify_watch)
>  inotify_add_watch returned Permission denied
>[2022/01/18 11:16:09.159771,  1, pid=27967, effective(0, 0), real(0, 0)] ../../source3/smbd/notifyd/notifyd.c:437(notifyd_apply_rec_change)
>  notifyd_apply_rec_change: sys_notify_watch for [/eecs/home/paulg] returned Permission denied
>
>
>#2 -   fget_ea_dos_attribute: Cannot get attribute from EA on file biopac: Error = Operation not supported

Sounds like the filesystem doesn't support EA's, or the kernel doesn't
support getting the EA via the sys_proc_fd_path() method.

CentOS 7 has an old kernel I believe.

To track this down you'll need to add more debugs to identify
exactly where the problem lies.