From df908dfbee336b84920a13a702839193d8aa4b57 Mon Sep 17 00:00:00 2001
From: Sergiusz Urbaniak <sur@coreos.com>
Date: Mon, 29 Aug 2016 15:40:00 +0200
Subject: [PATCH] Documentation: document required journal compression

Fixes #3104
---
 Documentation/using-rkt-with-systemd.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/using-rkt-with-systemd.md b/Documentation/using-rkt-with-systemd.md
index 6f7f57d348..f845009e4a 100644
--- a/Documentation/using-rkt-with-systemd.md
+++ b/Documentation/using-rkt-with-systemd.md
@@ -65,6 +65,16 @@ MACHINE CLASS SERVICE
 0 machines listed.
 ```
 
+Note that journald integration is only supported if systemd is compiled with `xz` compression enabled. To inspect this, use `systemctl`:
+
+```
+$ systemctl --version
+systemd v231
+[...] +XZ [...]
+```
+
+If the output contains `-XZ`, journal entries will not be available.
+
 ## Managing pods as systemd services
 
 ### Simple Unit File