I have setup usb backup to save some shared folders. When I plugin the usb drive, backup starts in the background as expected. I can see copied filed in the syslog. But for some reason it seems to stop working after a certain time. The usb device is still mounted, so technically usb backup is still in progress but there is no more progress seen in the syslog.
Is there any log or so where I can check usb backup for errors?