Bareos bpipe is not working

[Pavel Timofeev]

Hi!
I tried to use bpipe plugin under Bareos from ports tree. No luck:

Fatal error: bpipe plugin: Error closing stream for pseudo file /MySQL/mydb.sql

bareos-dir's config contains:
Plugin = "bpipe:file=/MySQL/mydb.sql:reader=mysqldump -uuser
-ppassword --databases mydb:writer=/bin/sh -c 'cat - > /tmp/mydb.sql'"

I use
FreeBSD 10.2-RELEASE amd64 GENERIC
bareos-client-15.2_1
bareos-server-15.2_1


Does anybody use bpipe under bareos?

P.S. hint from https://bugs.bareos.org/view.php?id=422 didn't help.