On Mon, Sep 26, 2016 at 7:34 AM, Gurucharan Shetty <g...@ovn.org> wrote:
> Signed-off-by: Gurucharan Shetty <g...@ovn.org>
> ---
> INSTALL.md | 23 ++++++++++++++++++++++-
> 1 file changed, 22 insertions(+), 1 deletion(-)
>
> diff --git a/INSTALL.md b/INSTALL.md
> index bb40e4a..6ecefdf 100644
> --- a/INSTALL.md
> +++ b/INSTALL.md
> @@ -322,9 +322,30 @@ Building the Sources
> 4. Run "make install" to install the executables and manpages into the
> running system, by default under /usr/local.
>
> -5. If you built kernel modules, you may install and load them, e.g.:
> +5. If you built kernel modules, you may install them, e.g.:
>
> `% make modules_install`
> +
> + It is possible that you already had a Open vSwitch kernel module
> + installed on your machine that came from upstream Linux (in a
> + different directory). To make sure that you insert the Open vSwitch
> + kernel module you built from this repository, you should create a
> + depmod.d file that prefers your newly installed kernel modules over
> + the kernel modules from upstream Linux. The following snippet of
> + code achieves the same.
> +
> + ```
> + % config_file="/etc/depmod.d/openvswitch.conf"
> + % for module in datapath/linux/*.ko; do
> + modname="$(basename ${module})"
> + echo "override $modname * extra" >> "$config_file"
> + echo "override $modname * weak-updates" >> "$config_file"
> + done
> + % depmod -a
> + ```
> +
>
I tried the script
#!/bin/bash
config_file="/etc/depmod.d/openvswitch.conf"
for module in datapath/linux/*.ko; do
modname="$(basename ${module})"
echo "override $modname * extra" >> "$config_file"
echo "override $modname * weak-updates" >> "$config_file"
done
depmod -a
on Ubuntu 14.04 and the script generated the expected
file contents
dball@ubuntu:~/openvswitch/ovs/_gcc$ cat /etc/depmod.d/openvswitch.conf
override openvswitch.ko * extra
override openvswitch.ko * weak-updates
override vport-geneve.ko * extra
override vport-geneve.ko * weak-updates
override vport-gre.ko * extra
override vport-gre.ko * weak-updates
override vport-lisp.ko * extra
override vport-lisp.ko * weak-updates
override vport-stt.ko * extra
override vport-stt.ko * weak-updates
override vport-vxlan.ko * extra
override vport-vxlan.ko * weak-updates
However the "extra" directory where locally built ovs kos are installed is
not
taking precedence
dball@ubuntu:~/openvswitch/ovs/_gcc$ sudo modinfo openvswitch
filename: /lib/modules/3.19.0-25-generic/kernel/net/
openvswitch/openvswitch.ko
license: GPL
description: Open vSwitch switching datapath
srcversion: EB1236CA2503B5F233DE125
depends: libcrc32c
intree: Y
vermagic: 3.19.0-25-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 6A:AA:11:D1:8C:2D:3A:40:B1:B4:DB:E5:BF:8A:D6:56:DD:F5:18:38
sig_hashalgo: sha512
So I edited the script to do something minimal, although it may not
work for all distributions ?
#!/bin/bash
config_file="/etc/depmod.d/openvswitch.conf"
echo "search extra" >> "$config_file"
depmod -a
dball@ubuntu:~/openvswitch/ovs/_gcc$ cat /etc/depmod.d/openvswitch.conf
search extra
and it seems to work (i.e. overrides my default config file) on Ubuntu
dball@ubuntu:~/openvswitch/ovs/_gcc$ sudo modinfo openvswitch
filename: /lib/modules/3.19.0-25-generic/extra/openvswitch.ko
alias: net-pf-16-proto-16-family-ovs_packet
alias: net-pf-16-proto-16-family-ovs_flow
alias: net-pf-16-proto-16-family-ovs_vport
alias: net-pf-16-proto-16-family-ovs_datapath
version: 2.6.90
license: GPL
description: Open vSwitch switching datapath
srcversion: E30F336D9883ACAE1CB02EA
depends: nf_conntrack,nf_nat,nf_defrag_ipv6,libcrc32c,nf_nat_
ipv6,nf_nat_ipv4,gre,nf_defrag_ipv4
vermagic: 3.19.0-25-generic SMP mod_unload modversions
parm: udp_port:Destination UDP port (ushort)
> + Finally, load the kernel modules that you need. e.g.:
> +
> `% /sbin/modprobe openvswitch`
>
> To verify that the modules have been loaded, run "/sbin/lsmod" and
> --
> 1.9.1
>
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>
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