[OpenAFS] strange errors when using a iso file mounted as a loop device, if the iso file is located in AFS

[Giovanni Bracco]

The error is related to accessing archive files that are contained in 
image ISO files that are physically located in AFS.

The typical and repeated error is:
    Errors extracting '/mnt/iso2/common/LINX64.GZ'
    '"/opt/ansys_inc/extract.sh"' terminated after 1 attempts with the 
following error(s):
        Unknown error
    Exit Code: 2
       tar: This does not look like a tar archive

The ISO is mounted locally to the server with
mount -o loop -t iso9660 file_in_afs.iso /mnt/iso2

When the iso file is moved on the server local file-system the error 
disappears.

The client:
AFS version:  OpenAFS 1.6.7 built  2014-04-05
CentOS 6.7 kernel 2.6.32-358.23.2.el6.x86_64

Any suggestion?

Giovanni
-- 
Giovanni Bracco
DTE-ICT-HPC
ENEA
Via E. Fermi 45
I-00044 Frascati (Roma) Italy
phone +39-06-9400-5597  mobile +39-3351992144
FAX   +39-06-9400-5735
E-mail  giovanni.bracco@enea.it
WWW http://www.afs.enea.it/bracco