[Ericsson AB]

relup

FILE

relup

FILE SUMMARY

Release upgrade file

DESCRIPTION

The release upgrade file describes how a release is upgraded in a running 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 should be located in the OTP_ROOT/erts-EVsn/Vsn directory.

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}, ...]}.
    

When upgrading from UpFromVsn with release_handler:install_release/1,2, there does not have to be an exact match of versions, but UpFromVsn can be a sub-string of the current release version.

SEE ALSO

app(4), appup(4), rel(4), release_handler(3), systools(3)

AUTHORS

Gunilla Hugosson - support@erlang.ericsson.se

sasl 2.1.4
Copyright © 1991-2007 Ericsson AB