[Maybe OT] BackupPC Aborts Backup at 8GB on F23

[Tim Evans]

I have just upgraded, to F23, a CentOS 6.7 system that has been reliably 
running BackupPC (http://backuppc.sourceforge.net/) to back up a Windows 
7 system via SMB for several years.

After the F23 upgrade, which also included an upgrade of BackupPC to 
version 3.3.1, backups are now always aborting at about the 8GB mark, 
with this in the error log:

2016-02-28 14:00:02 Started incr backup on pelican (pid=325, share=C$)
2016-02-28 14:18:37 Backup failed on pelican (tar:712  Total bytes 
received: 8287158228)

Actual byte count varies a bit from one failed backup to the next, but 
stays at the 8GB mark.

Not sure this if this is a BackupPC issue, or something else.  Maybe 
filesystem-related?

More (possibly complicating) info;  The destination for the backups is 
NFS mounted on the F23 server from a ReadyNAS fileserver; local 
filesystems on the ReadyNAS are btrfs format.

NFS mount shows:

raptor:/data/win on /win type nfs 
(rw,relatime,vers=3,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.252.6,mountvers=3,mountport=60363,mountproto=udp,local_lock=none,addr=192.168.252.6)

Where to look?  Thanks.
-- 
Tim Evans			|5 Chestnut Court
443-394-3864			|Owings Mills, MD 21117