timesyncd: also try next server when sendto() fails

[elogind.git] / README

diff --git a/README b/README
index b9181324e3a6b5e6831559d208497a7e1590efe0..cecbcbf0cd548a5b4e6c936b321a63783706781a 100644 (file)
--- a/README
+++ b/README
@@ -38,6 +38,10 @@ LICENSE:
 
 REQUIREMENTS:
         Linux kernel >= 3.0
+        Linux kernel >= 3.3 for loop device partition support features with nspawn
+        Linux kernel >= 3.8 for Smack support
+
+        Kernel Config Options:
           CONFIG_DEVTMPFS
           CONFIG_CGROUPS (it's OK to disable all controllers)
           CONFIG_INOTIFY_USER
@@ -49,8 +53,6 @@ REQUIREMENTS:
           CONFIG_PROC_FS
           CONFIG_FHANDLE (libudev, mount and bind mount handling)
 
-        Linux kernel >= 3.8 for Smack support
-
         Udev will fail to work with the legacy layout:
           CONFIG_SYSFS_DEPRECATED=n
 
@@ -68,6 +70,9 @@ REQUIREMENTS:
         create additional symlinks in /dev/disk/ and /dev/tape:
           CONFIG_BLK_DEV_BSG
 
+        Required for PrivateNetwork in service units:
+          CONFIG_NET_NS
+
         Optional but strongly recommended:
           CONFIG_IPV6
           CONFIG_AUTOFS4_FS
@@ -80,7 +85,7 @@ REQUIREMENTS:
           CONFIG_SCHED_DEBUG
 
         For UEFI systems:
-          CONFIG_EFI_VARS
+          CONFIG_EFIVAR_FS
           CONFIG_EFI_PARTITION
 
         Note that kernel auditing is broken when used with systemd's
@@ -89,6 +94,13 @@ REQUIREMENTS:
         runtime using the kernel command line option "audit=0", or
         turn it off at kernel compile time using:
           CONFIG_AUDIT=n
+        If systemd is compiled with libseccomp support on
+        architectures which do not use socketcall() and where seccomp
+        is supported (this effectively means x86-64 and ARM, but
+        excludes 32bit x86!), then nspawn will now install a
+        work-around seccomp filter that makes containers boot even
+        with audit being enabled. This works correctly only on kernels
+        3.14 and newer though. TL;DR: turn audit off, still.
 
         glibc >= 2.14
         libcap
@@ -102,15 +114,12 @@ REQUIREMENTS:
         libattr (optional)
         libselinux (optional)
         liblzma (optional)
-        tcpwrappers (optional)
         libgcrypt (optional)
         libqrencode (optional)
         libmicrohttpd (optional)
         libpython (optional)
         make, gcc, and similar tools
 
-        To sucessfully use --compat-libs, gcc >= 4.8 seems necessary.
-
         During runtime, you need the following additional
         dependencies:
 
@@ -190,6 +199,9 @@ WARNINGS:
         about this, since this kind of file system setup is not really
         supported anymore by the basic set of Linux OS components.
 
+        systemd requires that the /run mount point exists. systemd also
+        requires that /var/run is a a symlink → /run.
+
         For more information on this issue consult
         http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken