pg_dump: [tar archiver] write error appending to tar archive

Hello,

 

we have a shell-script, which executes the pg_dump once a day. This script ran already for about 6 months successfully.

 

Now we got the following error:

 

pg_dump: [tar archiver] write error appending to tar archive (wrote 28186, attempted 32767)

 

There is enough space on the hard disk.

 

Any ideas?

 

Regards

Michaela