Template: collectd/migration-3-4 Type: note _Description: Layout of RRD files has changed The layout of the RRD files created by collectd has changed significantly since version 3.x. In order to keep your old data you have to migrate it. This can be done by using /usr/lib/collectd-core/utils/migrate-3-4.px. . This step requires both the perl and the rrdtool packages to be installed, which is currently not the case. You need to perform the migration manually. . See /usr/share/doc/collectd-core/NEWS.Debian for details. Template: collectd/auto-migrate-3-4 Type: boolean Default: false _Description: Automatically try to migrate your RRD files? The layout of the RRD files created by collectd has changed significantly since version 3.x. In order to keep your old data you have to migrate it. This can be done by using /usr/lib/collectd-core/utils/migrate-3-4.px. . This step can be done automatically. In this case a backup of /var/lib/collectd/ is made in /var/backups/. This script is still experimental, though. Do not expect it to work in all cases. . See /usr/share/doc/collectd-core/NEWS.Debian for details.