[Samba] Multichannel and RSS Not Detected

Chris Dos chris at chrisdos.com
Sun Aug 22 18:31:31 UTC 2021

I'm still getting nowhere on this.

Is there a recommended vendor for commercial support for my use case?  Which
support vendors actually have developers working on Samba?   I need to get
this working in the next couple of days.


On 8/21/21 3:45 PM, Chris Dos via samba wrote:
> The Mellanox ConnectX-4 does not seem to load any firmware looking at dmesg. 
> I upgraded the firmware on the card on Server2 (that is what I'll call it) so
> that it matches what was on Server1.  Server2 multichannel still works.  I
> removed the 802.3ad LACP on Server1 (and removed the config in the switch) and
> set up both NICs to have an IP on the same subnet.  Multichannel still does
> not work.  I went into the BIOS on Server1 and nothing stood out as a problem
> preventing multichannel.  I upgraded Server2 to 4.15rc2 so everything matches
> as closely as possible to Server1.
> Does Samba do any kind of logging for multichannel?  I have logging turned up
> to 10 and all I see is is the option " oing parameter server multi channel
> support = yes" and nothing else.  How does one debug why Samba is not using
> multichannel when it's enabled?
> I'm actually having to work on my vacation right now to try and solve this as
> we need it working this Tuesday for our project.  I'm frustrated right now as
> I cannot see why this is not working.
> BTW, even though I'm frustrated, I very much appreciate the help being provided.
>     Chris
> On 8/18/21 7:20 AM, Chris Dos via samba wrote:
>> I'll check to make sure the card is not loading any firmware and if so, I
>> normally update to the latest firmware packages provided by kernel.org.
>> The server that is working only seems to be working on the 100G interface and
>> not on a 1G on a different network.  So something is still not right.  It
>> almost seems like it's voodoo right now when it does work.  :)
>>     Chris
>> On 8/18/21 6:45 AM, L.P.H. van Belle via samba wrote:
>>> Hai Chris, 
>>>> -----Oorspronkelijk bericht-----
>>>> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
>>>> Chris Dos via samba
>>>> Verzonden: woensdag 18 augustus 2021 14:17
>>>> Aan: samba at lists.samba.org
>>>> Onderwerp: Re: [Samba] Multichannel and RSS Not Detected
>>>> I was digging into the difference between the servers again 
>>>> and I noticed some other difference.�
>>>> I had upgraded the firmware a couple of months ago on the 
>>>> Supermicro Mellanox card (had to get the firmware from Supermicro) that is in the 
>>>> server that is not working.� I'm also running the Mellanox driver itself on 
>>>> the server that is not working.�
>>> Well, after you did this, did you check for new firmware packages for debian also. 
>>> These might be out of sync. 
>>> dpkg -l |grep firmware
>>> I dont know if linux is also loading firmware, but check that, should be somewhere in the bootlog/dmesg output. 
>>> If thats the case, i would look in : packages.debian.org if the current firmware is available in newer packages.
>>>> Both of these servers are multi-homed and are connected to three different
>>>> networks.� I discovered this morning that when looking at the server that is
>>>> working on the storage interface, that multichannel is not  working on the
>>>> internal interface which is using a different NIC.� So there is another piece
>>>> added to this puzzle.� You gave an example to disable offloading of the NICs.�
>>>> Is that required for multichannel/RSS to work?
>>> I dont think its required. 
>>> I would start here with newer kernel and linux firmwares. 
>>> https://packages.debian.org/search?suite=buster-backports&section=all&arch=any&searchon=names&keywords=linux-image-5.10 
>>> https://packages.debian.org/search?suite=buster&section=all&arch=any&searchon=names&keywords=firmware-linux 
>>> And possible the "specific firmwares" 
>>> ( like i use : firmware-bnx2 ) 
>>> Cant help much beside above, i hope i gave you some ideas where to look at. 
>>> Greetz, 
>>> Louis
>>>> ��� Chris
>>>> On 8/17/21 8:28 AM, L.P.H. van Belle via samba wrote:
>>>>> On the virtual hosts and possible guest..
>>>>> Did you check if there not any problem with drivers and 
>>>> possible offloading of the nics..
>>>>> I use XenServer, so thats the example i can give. 
>>>> https://github.com/cloudnull/XenServer-Offloading-Off/blob/mas
>>> ter/offloadingoff.sh 
>>>>> But which one does work now? 
>>>>> You didnt tell that. :-( 
>>>>> Greetz, 
>>>>> Louis
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