os/doc
3
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

A few changes to the Xen setup:

Browse source 
1) The line
    sysrc -f /etc/sysctl.conf vm.max_wired=-1
does not work, it only returns an error about a name containing characters
not allowed in shell. Instead, use echo to add the line to sysctl.conf.

2) Fix the rules for automatic bridge creation, taken from the bridging
chapter of the handbook.

3) Add a note that FreeBSD's Dom0 requires booting in legacy (BIOS) mode.

4) Remove mention of xen.4th for the loader menu. It's not working anymore
with the Lua loader that we have now. Until this is fixed, don't refer
readers to it.

Thanks to royger@ for providing the patch.

Submitted by:	royger@
Approved by:	me
Differential Revision:	https://reviews.freebsd.org/D19294
This commit is contained in:
Benedict Reuschling 2019-02-22 19:21:10 +00:00
parent d72ce4219c
commit ef8f6cc56a
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=52827
1 changed files with 11 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
en_US.ISO8859-1/books/handbook/virtualization/chapter.xml
View file

@ -1444,6 +1444,12 @@ kld_list="nmdm vmm"</programlisting>
and Input/Output Memory Management Unit (<link
xlink:href="http://en.wikipedia.org/wiki/List_of_IOMMU-supporting_hardware">IOMMU</link>)
support in the host processor.</para>
<note>
<para>In order to run a FreeBSD &xen; Dom0 the box must be
booted using legacy boot (BIOS).</para>
</note>
</sect2>
<sect2 xml:id="virtualization-host-xen-dom0-setup">
@ -1464,7 +1470,7 @@ kld_list="nmdm vmm"</programlisting>
Otherwise, DomU VMs with higher memory requirements will not
run.</para>
<screen>&prompt.root; <userinput>sysrc -f /etc/sysctl.conf vm.max_wired=-1</userinput></screen>
<screen>&prompt.root; <userinput>echo 'vm.max_wired=-1' >> /etc/sysctl.conf</userinput></screen>
<para>Another memory-related setting involves changing
<filename>/etc/login.conf</filename>, setting the
@ -1516,12 +1522,6 @@ kld_list="nmdm vmm"</programlisting>
experiencing issues.</para>
</tip>
<para>&xen; provides a boot menu to activate and de-activate
the hypervisor on demand in
<filename>/boot/menu.rc.local</filename>:</para>
<screen>&prompt.root; <userinput>echo "try-include /boot/xen.4th" >> /boot/menu.rc.local</userinput></screen>
<para>Activate the xencommons service during system
startup:</para>
@ -1532,12 +1532,12 @@ kld_list="nmdm vmm"</programlisting>
DomU machines. To fix that, define a bridged interface with
the main NIC of the system which the DomU VMs can use to
connect to the network. Replace
<replaceable>igb0</replaceable> with the host network
<replaceable>em0</replaceable> with the host network
interface name.</para>
<screen>&prompt.root; <userinput>sysrc autobridge_interfaces=bridge0</userinput>
&prompt.root; <userinput>sysrc autobridge_bridge0=<replaceable>igb0</replaceable></userinput>
&prompt.root; <userinput>sysrc ifconfig_bridge0=SYNCDHCP</userinput></screen>
<screen>&prompt.root; <userinput>sysrc cloned_interfaces="bridge0"</userinput>
&prompt.root; <userinput>sysrc ifconfig_bridge0="addm <replaceable>em0</replaceable> SYNCDHCP"</userinput>
&prompt.root; <userinput>sysrc ifconfig_<replaceable>em0</replaceable>="up"</userinput></screen>
<para>Restart the host to load the &xen; kernel and start the
Dom0.</para>