[Samba] widelinks_warning - but unix extensions *are* off

Thomas Werschlein thomas.werschlein at geo.uzh.ch
Thu Oct 29 16:27:49 UTC 2015


Hi all

Since we changed our installation from Samba 3.x to 4.x (currently 4.2.5 on Solaris 11.1), we repeatedly encounter the following 'widelinks_warning', originating from Windows Server 2012 R2 RDS clients:

[2015/10/29 15:50:38.837702,  0] ../source3/param/loadparm.c:4306(widelinks_warning)
  Share 'data' has wide links and unix extensions enabled. These parameters are incompatible. Wide links will be disabled for this share.
[2015/10/29 15:50:38.838518,  0] ../source3/param/loadparm.c:4306(widelinks_warning)
  Share 'group' has wide links and unix extensions enabled. These parameters are incompatible. Wide links will be disabled for this share.
[2015/10/29 15:50:38.839070,  0] ../source3/param/loadparm.c:4306(widelinks_warning)
  Share 'web' has wide links and unix extensions enabled. These parameters are incompatible. Wide links will be disabled for this share.

The strange thing is: "unix extensions" *are* actually off. "wide links" are on, since we use them for vfs_shadow_copy2 (but not on the affected shares):

# testparm -sv 2>/dev/null |egrep 'wide links|unix extensions'
        unix extensions = No
        allow insecure wide links = No
        wide links = Yes

The affected shares (data, group, web) are distinct from "working" ones, by the fact that "hide unreadable" is set to "Yes" on the affected shares only. This is how the affected shares are configured:

[data]
        path = /pool1/data
        read only = No
        acl map full control = No
        ea support = Yes
        nt acl support = No
        hide unreadable = Yes
        map archive = No
        map readonly = no
        store dos attributes = Yes
        vfs objects = zfsacl full_audit

Unfortunately, we can't trigger the behaviour. It's all pretty fuzzy, but maybe someone out there has an idea what's going on?

Best, Thomas









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