Can OVN DHCP used in PXE？ about ovn HOT 11 OPEN

@umago Do you have any comments here

from ovn.

Hi,

@M258 are you using an IPv4 address as the value of that option or a hostname ? Because just yesterday I saw a patch that is suppose to fix the data type of that option from "ipv4" to "string" in order to make it support hostnames as well. Maybe you are hitting this limitation, let me know.

You can find the patch fixing it here https://patchwork.ozlabs.org/project/openvswitch/patch/[email protected]/

from ovn.

Hi,

@M258 are you using an IPv4 address as the value of that option or a hostname ? Because just yesterday I saw a patch that is suppose to fix the data type of that option from "ipv4" to "string" in order to make it support hostnames as well. Maybe you are hitting this limitation, let me know.

You can find the patch fixing it here https://patchwork.ozlabs.org/project/openvswitch/patch/[email protected]/

Thanks for informing me about this patch，but it's not what I want。I want to use ovn dhcp to set “next server” in dhcp header to use pxe，not “tftp server” in dhcp options.

from ovn.

@M258 So you want the OVN dhcp to set dhcp next header to "tftp_server" option ?
If this is what RFC says and if we are not following it, we should fix it.

It should be straight forward to fix it.

Feel free to propose a patch. If not, I can look into it, but it has to wait before I clear my backlog.

Thanks

from ovn.

Has this problem been solved ? I meet the same problem when i start mlx cx6 pxe with ovn dhcp.

from ovn.

I want to use ovn DHCP to set the PXE server by using “ovn-nbctl dhcp-options-set-options [dhcp-option-id] tftp_server=X.X.X.X", but it dose't work.
It seems that ovn dosen't set DHCP “next server” as tftp_server. How to resove it？

mark

from ovn.

which version of OVN you're using ?

I thought that we have all the necessart bits in OVN to support PXE.

@umago You've any comments ?

Thanks

from ovn.

which version of OVN you're using ?

I thought that we have all the necessart bits in OVN to support PXE.

@umago You've any comments ?

Thanks
[root@arm01 ~]# ovn-sbctl --version
ovn-sbctl 20.12.1
Open vSwitch Library 2.14.90
DB Schema 20.12.0
[root@arm01 ~]#
[root@arm01 ~]#
[root@arm01 ~]# ovn-nbctl --version
ovn-nbctl 20.12.1
Open vSwitch Library 2.14.90
DB Schema 5.28.0

from ovn.

i catch 2 packets with dnsmasq service and ovn dhcp respectively. i find when i use dnsmasq , next server in dhcp ack has a value and can pxe normally .But when i use ovn dhcp，during pxe i get an error ‘Nothing to boot：No such file ’ ，and No value is assigened to next server in dhcp ack.

from ovn.

from ovn.

we had fixed it by ourselves, like this: put option 150 to siaddr.

from ovn.