Updated about 7 years ago by Jamila Khan
vim /etc/apt/sources.list
:%s/jessie/stretch/g
apt-get -o APT::Get::Trivial-Only=true dist-upgrade
apt-get update
apt-get upgrade
apt-get dist-upgrade
PT ticket #35194-19
header.pl and constants.pm are in the ibackup directory but perl on debian does not look in the local directory for @INC.
to fix copy both header.pl and constants.pm into /etc/perl/
until backupninja gets the fixes pushed out to the debian repo PT ticket #35353
add partitions = no
to job 15
https://www.howtoforge.com/tutorial/how-to-upgrade-debian-8-jessie-to-9-stretch/