[Qemu-devel] Add an IPMI device to qemu

[Qemu-devel] Add an IPMI device to qemu

[Noel Burton-Krahn]

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Hi Corey,

I saw your patches for getting IPMI into qemu, but they don't appear to be
in the qemu git repo yet.  Do you have a github  branch I could cherry-pick
to try them out?  We've been looking at getting IPMI on VMs for a while.
Thanks for your work!

[1] [Qemu-devel] [PATCH 00/16] Add an IPMI device to qemu
http://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg01990.html

Cheers,
--
Noel Burton-Krahn
Piston Cloud Computing

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Re: [Qemu-devel] Add an IPMI device to qemu

[Corey Minyard]

Sure, it's available on https://github.com/cminyard/qemu.git, the
stable-2.2-ipmi branch for now.

I'm currently reworking these patches based upon feedback from the qemu
maintainers.

-corey

On 04/22/2015 04:30 PM, Noel Burton-Krahn wrote:
> Hi Corey,
>
> I saw your patches for getting IPMI into qemu, but they don't appear
> to be in the qemu git repo yet.  Do you have a github  branch I could
> cherry-pick to try them out?  We've been looking at getting IPMI on
> VMs for a while.  Thanks for your work!
>
> [1] [Qemu-devel] [PATCH 00/16] Add an IPMI device to qemu
> http://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg01990.html
>
> Cheers,
> --
> Noel Burton-Krahn
> Piston Cloud Computing
>

Re: [Qemu-devel] Add an IPMI device to qemu

[Noel Burton-Krahn]

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Thanks a lot, Corey.  I'll check them out.

On Wed, Apr 22, 2015 at 3:46 PM, Corey Minyard <minyard@acm.org> wrote:

> Sure, it's available on https://github.com/cminyard/qemu.git, the
> stable-2.2-ipmi branch for now.
>
> I'm currently reworking these patches based upon feedback from the qemu
> maintainers.
>
> -corey
>
> On 04/22/2015 04:30 PM, Noel Burton-Krahn wrote:
> > Hi Corey,
> >
> > I saw your patches for getting IPMI into qemu, but they don't appear
> > to be in the qemu git repo yet.  Do you have a github  branch I could
> > cherry-pick to try them out?  We've been looking at getting IPMI on
> > VMs for a while.  Thanks for your work!
> >
> > [1] [Qemu-devel] [PATCH 00/16] Add an IPMI device to qemu
> > http://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg01990.html
> >
> > Cheers,
> > --
> > Noel Burton-Krahn
> > Piston Cloud Computing
> >
>
>

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Re: [Qemu-devel] Add an IPMI device to qemu

[Noel Burton-Krahn]

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OK, I've build qemu and openipmi.  I'm simulating a system where a central
control node boots from USB, then uses IPMI to boot a cluster of slave
nodes and provisions them by tftpboot.  If I understand correctly, I'll be
running one ipmi_sim per slave node, and my control node will tell that to
boot a qemu instance for each slave.  Sounds good so far?

The sample lan.conf has two sections started by set_working_mc 0x20
and set_working_mc 0x30.  Is that for configuring multiple ipmi simulators
in a single config file?

Thanks a lot for all your work.

--
Noel


On Wed, Apr 22, 2015 at 4:26 PM, Noel Burton-Krahn <noel@pistoncloud.com>
wrote:

> Thanks a lot, Corey.  I'll check them out.
>
> On Wed, Apr 22, 2015 at 3:46 PM, Corey Minyard <minyard@acm.org> wrote:
>
>> Sure, it's available on https://github.com/cminyard/qemu.git, the
>> stable-2.2-ipmi branch for now.
>>
>> I'm currently reworking these patches based upon feedback from the qemu
>> maintainers.
>>
>> -corey
>>
>> On 04/22/2015 04:30 PM, Noel Burton-Krahn wrote:
>> > Hi Corey,
>> >
>> > I saw your patches for getting IPMI into qemu, but they don't appear
>> > to be in the qemu git repo yet.  Do you have a github  branch I could
>> > cherry-pick to try them out?  We've been looking at getting IPMI on
>> > VMs for a while.  Thanks for your work!
>> >
>> > [1] [Qemu-devel] [PATCH 00/16] Add an IPMI device to qemu
>> > http://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg01990.html
>> >
>> > Cheers,
>> > --
>> > Noel Burton-Krahn
>> > Piston Cloud Computing
>> >
>>
>>
>

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Re: [Qemu-devel] Add an IPMI device to qemu

[Corey Minyard]

On 04/22/2015 07:25 PM, Noel Burton-Krahn wrote:
> OK, I've build qemu and openipmi.  I'm simulating a system where a
> central control node boots from USB, then uses IPMI to boot a cluster
> of slave nodes and provisions them by tftpboot.  If I understand
> correctly, I'll be running one ipmi_sim per slave node, and my control
> node will tell that to boot a qemu instance for each slave.  Sounds
> good so far?

Yes, that is correct.

>
> The sample lan.conf has two sections started by set_working_mc 0x20
> and set_working_mc 0x30.  Is that for configuring multiple ipmi
> simulators in a single config file?
>

That is just for testing, really.  IPMI supports configurations with
multiple management controllers, say if you put a management controller
in a power supply that just managed that device.

However, you should be able to manage multiple VMs from a single IPMI
simulator.  Create an MC for each VM and set it up, and send the chassis
management commands to the individual MC.  You can use the "-t" option
of ipmitool to set the particular MC you are addressing.

-corey

-corey

Re: [Qemu-devel] Add an IPMI device to qemu

[Noel Burton-Krahn]

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Thanks, Corey.

How does the lan_config_program in lan.conf work?  I couldn't find an
example in the OpenIPMI-2.0.21 tarball.  Our central controller expects
each node's ipmi module to dhcp for an address.  I'm trying to decide if I
need to run dhcpc on the interface that ipmi_sim runs on.  Can I just bind
ipmi_sim to an interface and let it dhcp for its address?  If not, how does
it work with lan_config_program?


FYI, In our setup, we have two networks for ipmi and data.  One control
node is connected to both networks and provides dhcp

controller       node1      node2 ...
IPMI  eth0 ----- ipmi0 ---- ipmi0
DATA  eth1 ----- eth0 ----- eth0

I'm using veth pairs with one end in a bridge for the ipmi interfaces and
tap devices for qemu simulating the nodes.

--
Noel




On Thu, Apr 23, 2015 at 2:42 PM, Corey Minyard <minyard@acm.org> wrote:

> On 04/22/2015 07:25 PM, Noel Burton-Krahn wrote:
> > OK, I've build qemu and openipmi.  I'm simulating a system where a
> > central control node boots from USB, then uses IPMI to boot a cluster
> > of slave nodes and provisions them by tftpboot.  If I understand
> > correctly, I'll be running one ipmi_sim per slave node, and my control
> > node will tell that to boot a qemu instance for each slave.  Sounds
> > good so far?
>
> Yes, that is correct.
>
> >
> > The sample lan.conf has two sections started by set_working_mc 0x20
> > and set_working_mc 0x30.  Is that for configuring multiple ipmi
> > simulators in a single config file?
> >
>
> That is just for testing, really.  IPMI supports configurations with
> multiple management controllers, say if you put a management controller
> in a power supply that just managed that device.
>
> However, you should be able to manage multiple VMs from a single IPMI
> simulator.  Create an MC for each VM and set it up, and send the chassis
> management commands to the individual MC.  You can use the "-t" option
> of ipmitool to set the particular MC you are addressing.
>
> -corey
>
> -corey
>

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Re: [Qemu-devel] Add an IPMI device to qemu

[Corey Minyard]

On 04/24/2015 04:57 PM, Noel Burton-Krahn wrote:
> Thanks, Corey.
>
> How does the lan_config_program in lan.conf work?  I couldn't find an
> example in the OpenIPMI-2.0.21 tarball.  Our central controller
> expects each node's ipmi module to dhcp for an address.  I'm trying to
> decide if I need to run dhcpc on the interface that ipmi_sim runs on. 
> Can I just bind ipmi_sim to an interface and let it dhcp for its
> address?  If not, how does it work with lan_config_program?
>

That program is for handling the LAN configuration commands over IPMI. 
If you don't want to be able to control your host's LAN configuration
over IPMI, you can just ignore this and not have one.

If you do want that, it will take some digging, it's not well documented.

-corey

>
> FYI, In our setup, we have two networks for ipmi and data.  One
> control node is connected to both networks and provides dhcp
>
> controller       node1      node2 ...
> IPMI  eth0 ----- ipmi0 ---- ipmi0
> DATA  eth1 ----- eth0 ----- eth0 
>
> I'm using veth pairs with one end in a bridge for the ipmi interfaces
> and tap devices for qemu simulating the nodes.
>
> --
> Noel
>
>
>
>
> On Thu, Apr 23, 2015 at 2:42 PM, Corey Minyard <minyard@acm.org
> <mailto:minyard@acm.org>> wrote:
>
>     On 04/22/2015 07:25 PM, Noel Burton-Krahn wrote:
>     > OK, I've build qemu and openipmi.  I'm simulating a system where a
>     > central control node boots from USB, then uses IPMI to boot a
>     cluster
>     > of slave nodes and provisions them by tftpboot.  If I understand
>     > correctly, I'll be running one ipmi_sim per slave node, and my
>     control
>     > node will tell that to boot a qemu instance for each slave.  Sounds
>     > good so far?
>
>     Yes, that is correct.
>
>     >
>     > The sample lan.conf has two sections started by set_working_mc 0x20
>     > and set_working_mc 0x30.  Is that for configuring multiple ipmi
>     > simulators in a single config file?
>     >
>
>     That is just for testing, really.  IPMI supports configurations with
>     multiple management controllers, say if you put a management
>     controller
>     in a power supply that just managed that device.
>
>     However, you should be able to manage multiple VMs from a single IPMI
>     simulator.  Create an MC for each VM and set it up, and send the
>     chassis
>     management commands to the individual MC.  You can use the "-t" option
>     of ipmitool to set the particular MC you are addressing.
>
>     -corey
>
>     -corey
>
>