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Thread: DFS mounts broken with kernel 3.0.101-0.47.55-default

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    Question DFS mounts broken with kernel 3.0.101-0.47.55-default

    After installing the latest kernel update to SLES 11 SP3 (3.0.101-0.47.55) cifs mounts of our AD shares (DFS) do no longer work.

    After going back to 3.0.101-0.47.52-default everything is fine, as before the update. All other patches have been applied.

    The mount error is:
    mount error(1): Operation not permitted
    Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

    dmesg reports:
    [ 9322.605008] CIFS VFS: Send error in SessSetup = -1
    [ 9322.605465] CIFS VFS: cifs_mount failed w/return code = -1
    [ 9374.923398] CIFS VFS: cifs_calc_signature2: Can't generate signature [ 9374.923401]

    The problem occurs only when using the DFS syntax. Mounting UNC path or samba shares works fine.

    A DFS path in our environment is somthing like //ukl-dc02.ad.uniklinik-freiburg.de/group/
    whereas an UNC path would be something like //ukl-fscl01grp02/group02$/ i.e. pointing to the actual file server.

    As file servers can change and we make extensive use of DFS path, we absolutely depend on this way of mounting.
    Last edited by mbaumstark; 07-Jul-2015 at 14:06.

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