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-rw-r--r--lib/sasl/doc/src/appup.xml23
1 files changed, 20 insertions, 3 deletions
diff --git a/lib/sasl/doc/src/appup.xml b/lib/sasl/doc/src/appup.xml
index 85fcbed3ba..95f315d269 100644
--- a/lib/sasl/doc/src/appup.xml
+++ b/lib/sasl/doc/src/appup.xml
@@ -4,7 +4,7 @@
<fileref>
<header>
<copyright>
- <year>1997</year><year>2013</year>
+ <year>1997</year><year>2014</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -84,6 +84,9 @@
version identifier must be specified as a binary, e.g.</p>
<code type="none">&lt;&lt;"2\\.1\\.[0-9]+">></code>
<p>will match all versions <c>2.1.x</c>, where x is any number.</p>
+ <p>Note that the regular expression must match the complete
+ version string, so the above example will work for for
+ e.g. <c>2.1.1</c>, but not for <c>2.1.1.1</c></p>
</section>
<section>
@@ -339,7 +342,7 @@ restart_new_emulator
version of erts, kernel, stdlib and sasl are used when the
emulator restarts. Only one <c>restart_new_emulator</c>
instruction is allowed in the relup, and it shall be placed
- first. <seealso marker="systools#make_relup/3">systools:make_relup3,4</seealso>
+ first. <seealso marker="systools#make_relup/3">systools:make_relup/3,4</seealso>
will ensure this when the relup is generated. The rest of the
relup script is executed after the restart as a part of the boot
script.</p>
@@ -347,11 +350,25 @@ restart_new_emulator
completed. To programatically find out if the upgrade is
complete,
call <seealso marker="release_handler#which_releases/0">
- release_handler:which_releases</seealso> and check if the
+ release_handler:which_releases/0,1</seealso> and check if the
expected release has status <c>current</c>.</p>
<p>The new release must still be made permanent after the upgrade
is completed. Otherwise, the old emulator is started in case of
an emulator restart.</p>
+ <warning>
+ <p>As stated above, the <c>restart_new_emulator</c>
+ instruction causes the emulator to be restarted with new
+ versions of <c>erts</c>, <c>kernel</c>, <c>stdlib</c> and
+ <c>sasl</c>. All other applications, however, will at startup
+ be running their old versions in this new emulator. In most
+ cases this is no problem, but every now and then there will be
+ incompatible changes to the core applications which may cause
+ trouble in this setting. Such incompatible changes (when
+ functions are removed) are normally preceded by a deprecation
+ over two major releases. To make sure your application is not
+ crashed by an incompatible change, always remove any call to
+ deprecated functions as soon as possible.</p>
+ </warning>
<pre>
restart_emulator
</pre>