relup - Release upgrade file
Please see following description for synopsis
relup(5) Files relup(5) NAME relup - Release upgrade file DESCRIPTION The release upgrade file describes how a release is upgraded in a run- ning system. This file is automatically generated by systools:make_relup/3,4, using a release resource file (.rel), application resource files (.app), and application upgrade files (.appup) as input. FILE SYNTAX In a target system, the release upgrade file is to be located in direc- tory $ROOT/releases/Vsn. The relup file contains one single Erlang term, which defines the instructions used to upgrade the release. The file has the following syntax: {Vsn, [{UpFromVsn, Descr, Instructions}, ...], [{DownToVsn, Descr, Instructions}, ...]}. Vsn = string(): Current release version. UpFromVsn = string(): Earlier version of the release to upgrade from. Descr = term(): A user-defined parameter passed from the function sys- tools:make_relup/3,4. It is used in the return value of release_handler:install_release/1,2. Instructions: A list of low-level release upgrade instructions, see appup(4). It consists of the release upgrade instructions from the respective application upgrade files (high-level instructions are translated to low-level instructions), in the same order as in the start script. DownToVsn = string(): Earlier version of the release to downgrade to. SEE ALSO app(4), appup(4), rel(4), release_handler(3), systools(3) Ericsson AB sasl 4.1.1 relup(5)