NSS Backup fails on specific pools using Veritas Backup Exec.

Backup Exec agent on OES crashes while performing a backup from a particular NSS volume.

On /var/log/messages segfault on a BE library are observed:
kernel: [976229.471409] beremote[3526]: segfault at 7f438b679e00 ip 00007f3226be2557 sp 00007f322c8d4c70 error 6 in libgfsp.so[7f3226bd5000+12000]

The volume on which the backup is performed is 'NSS_AD' enabled and does have the NSS 'Copy-on-Write' feature enabled.

Please note : this was a NSS pool created a long time ago. Enabling NSS 'Copy-on-Write' on newly created pools is unsupported and no longer possible.

Remove the NSS "Copy-on-Write" feature, since is not (no longer)  supported on OES !

NOTE: The segfault was observed only when backing up a NSS "Copy-on-Write" enabled volumes *and*  the volume is NSS_AD enabled.

Other volumes without the NSS "Copy-on-Write" feature could be backed up without problems.