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docs: networking: Fix failover build warnings

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Currently building the net_failover docs causes a bunch of warnings to
be emitted.  These warnings are all related to indentation and correctly
highlight missing '::' (for code sections).  It looks, from other rst
files in Documentation, that the first column should be indented 2
spaces.

Add '::' before code snippets and indent all snippets uniformly starting
with 2 spaces.

Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tobin C. Harding 2018-07-12 07:42:50 +10:00 committed by David S. Miller
parent d95768d3cc
commit 2880984970
1 changed files with 55 additions and 52 deletions
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107
Documentation/networking/net_failover.rst
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@ -36,37 +36,39 @@ feature on the virtio-net interface and assign the same MAC address to both
virtio-net and VF interfaces.
Here is an example XML snippet that shows such configuration.
::
<interface type='network'>
<mac address='52:54:00:00:12:53'/>
<source network='enp66s0f0_br'/>
<target dev='tap01'/>
<model type='virtio'/>
<driver name='vhost' queues='4'/>
<link state='down'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
</interface>
<interface type='hostdev' managed='yes'>
<mac address='52:54:00:00:12:53'/>
<source>
<address type='pci' domain='0x0000' bus='0x42' slot='0x02' function='0x5'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</interface>
<interface type='network'>
<mac address='52:54:00:00:12:53'/>
<source network='enp66s0f0_br'/>
<target dev='tap01'/>
<model type='virtio'/>
<driver name='vhost' queues='4'/>
<link state='down'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
</interface>
<interface type='hostdev' managed='yes'>
<mac address='52:54:00:00:12:53'/>
<source>
<address type='pci' domain='0x0000' bus='0x42' slot='0x02' function='0x5'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</interface>
Booting a VM with the above configuration will result in the following 3
netdevs created in the VM.
::
4: ens10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 52:54:00:00:12:53 brd ff:ff:ff:ff:ff:ff
inet 192.168.12.53/24 brd 192.168.12.255 scope global dynamic ens10
valid_lft 42482sec preferred_lft 42482sec
inet6 fe80::97d8:db2:8c10:b6d6/64 scope link
valid_lft forever preferred_lft forever
5: ens10nsby: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master ens10 state UP group default qlen 1000
link/ether 52:54:00:00:12:53 brd ff:ff:ff:ff:ff:ff
7: ens11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master ens10 state UP group default qlen 1000
link/ether 52:54:00:00:12:53 brd ff:ff:ff:ff:ff:ff
4: ens10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 52:54:00:00:12:53 brd ff:ff:ff:ff:ff:ff
inet 192.168.12.53/24 brd 192.168.12.255 scope global dynamic ens10
valid_lft 42482sec preferred_lft 42482sec
inet6 fe80::97d8:db2:8c10:b6d6/64 scope link
valid_lft forever preferred_lft forever
5: ens10nsby: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master ens10 state UP group default qlen 1000
link/ether 52:54:00:00:12:53 brd ff:ff:ff:ff:ff:ff
7: ens11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master ens10 state UP group default qlen 1000
link/ether 52:54:00:00:12:53 brd ff:ff:ff:ff:ff:ff
ens10 is the 'failover' master netdev, ens10nsby and ens11 are the slave
'standby' and 'primary' netdevs respectively.
@ -80,37 +82,38 @@ the paravirtual datapath when the VF is unplugged.
Here is a sample script that shows the steps to initiate live migration on
the source hypervisor.
::
# cat vf_xml
<interface type='hostdev' managed='yes'>
<mac address='52:54:00:00:12:53'/>
<source>
<address type='pci' domain='0x0000' bus='0x42' slot='0x02' function='0x5'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</interface>
# cat vf_xml
<interface type='hostdev' managed='yes'>
<mac address='52:54:00:00:12:53'/>
<source>
<address type='pci' domain='0x0000' bus='0x42' slot='0x02' function='0x5'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</interface>
# Source Hypervisor
#!/bin/bash
# Source Hypervisor
#!/bin/bash
DOMAIN=fedora27-tap01
PF=enp66s0f0
VF_NUM=5
TAP_IF=tap01
VF_XML=
DOMAIN=fedora27-tap01
PF=enp66s0f0
VF_NUM=5
TAP_IF=tap01
VF_XML=
MAC=52:54:00:00:12:53
ZERO_MAC=00:00:00:00:00:00
MAC=52:54:00:00:12:53
ZERO_MAC=00:00:00:00:00:00
virsh domif-setlink $DOMAIN $TAP_IF up
bridge fdb del $MAC dev $PF master
virsh detach-device $DOMAIN $VF_XML
ip link set $PF vf $VF_NUM mac $ZERO_MAC
virsh domif-setlink $DOMAIN $TAP_IF up
bridge fdb del $MAC dev $PF master
virsh detach-device $DOMAIN $VF_XML
ip link set $PF vf $VF_NUM mac $ZERO_MAC
virsh migrate --live $DOMAIN qemu+ssh://$REMOTE_HOST/system
virsh migrate --live $DOMAIN qemu+ssh://$REMOTE_HOST/system
# Destination Hypervisor
#!/bin/bash
# Destination Hypervisor
#!/bin/bash
virsh attach-device $DOMAIN $VF_XML
virsh domif-setlink $DOMAIN $TAP_IF down
virsh attach-device $DOMAIN $VF_XML
virsh domif-setlink $DOMAIN $TAP_IF down