11.2: describe xrootd door changes

Author: kofemann

release-notes-11.2

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+HTML header: <title>dCache 11.2 Release Notes</title>
+             <!--#include virtual="/template/default-head.shtml" -->
+             <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+             <!-- Bootstrap -->
+             <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"
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+             <!--link type="text/css" rel="stylesheet" href="jquery.tocify.css" /-->
+             <style type="text/css">
+             h5 {
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+                 font-style: italic;
+                 margin-top: 20px;
+             }
+             body {
+                 padding-top: 20px;
+             }
+             @media (max-width: 767px) {
+                 #toc {
+                     position: relative;
+                     width: 100%;
+                     margin: 0px 0px 20px 0px;
+                 }
+             }
+             @media print {
+                 #toc {
+                     display: none;
+                 }
+             }
+             </style>
+
+<div class="container">
+<div id="banner">
+   <div id="bird_large">
+      <img src="/images/dcache-banner.png" class="bird"></img>
+   </div>
+   <div id="sidebar-b">
+      <span class="dcache-nav-bar">
+      <a href="/index.shtml">home</a>
+      |
+      <a href="/news.shtml">news</a>
+      |
+      <a href="/manuals/index.shtml">documentation</a>
+      |
+      <a href="/downloads/IAgree.shtml">downloads</a>
+      |
+      <a href="/feedback.shtml">feedback</a>
+      |
+      <a href="/manuals/googlesearch.shtml">search</a>
+      |
+      <a href="/imprint.shtml">imprint&#160;</a>
+      </span>
+   </div>
+</div>
+<div id="content">
+
+<div class="row">
+
+<div class="page-header">
+<h1>What's new in dCache 11.2<br/>
+<small>Release notes</small></h1>
+</div>
+
+## Highlights
+
+
+## Incompatibilities
+
+- Xrootd PrepareRequest will return `Unsupported`
+
+## Acknowledgments
+
+
+
+## Release 11.2.0
+
+### Admin
+
+### Chimera
+
+### Cleaner
+
+### DCAP
+
+### gplazma
+
+### httpd
+
+### Monitoring
+
+
+### Pool
+
+### Xrootd
+
+Up to version 11.2.0 on Xrootd request `prepare`, which supped to trigger staging, dCache will
+respond with OK without performing any actions. Thus, any access to a file on tape will trigger
+stage and potentially block. This behavior is now change, so that `prepare` request will fail with
+error `Unsupported`. The users who need staging should use TAPE-REST-API.
+
+
+### Changelog from 11.0.0 to 11.1.0
+
+<!-- git log 11.1..11.2 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->
+
+
+
+
+</div>
+</div>
+</div>
+
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+
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