[DRBD-user] drbd + 10gig network

Mike Lovell mike at dev-zero.net
Fri Nov 20 19:19:55 CET 2009


Igor Neves wrote:
>
>
> On 11/20/2009 05:01 PM, Mike Lovell wrote:
>> Mike Lovell wrote:
>>> Mike Lovell wrote:
>>>> Igor Neves wrote:
>>>>> Hi,
>>>>>
>>>>> Are you still using software raid?
>>>>>
>>>>> Have you tryed out using hardware raid?
>>>>>
>>>>> The only time i had tryed out drbd with mdraid, well let's say, i 
>>>>> never will try that again, from now on, we only use areca raid 
>>>>> cards. Anyway, software raid it's slow, if you want to do this 
>>>>> thing, buy raid controllers, the best ones are areca, 3ware and 
>>>>> lsi it's bad, don't know all the others.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> On 10/23/2009 10:40 PM, Mike Lovell wrote:
>>>>>> exaggerated the problem. when the sync hangs, the drbd module is 
>>>>>> almost completely unresponsive. i tried doing a pause-sync and 
>>>>>> then resume-sync thinking that it would nudge the module into 
>>>>>> working but the commands timeout on talking to the module. i can 
>>>>>> still cat /proc/drbd but that is about it until i take down the 
>>>>>> network interface and drbd detects the network change. if i then 
>>>>>> bring back up the interface, drbd detects it can talk again but 
>>>>>> then only syncs a couple of megabytes before stalling again. i 
>>>>>> have tried every way i can think of to check the integrity of the 
>>>>>> network link between the hosts and everything says they are fine 
>>>>>> except for during a ping flood there will be a few out of a couple h
>>>>>
>>>> yes, i am using software raid. i guess i didn't try changing that 
>>>> during my hardware changes. i'll see if i can scrounge up some raid 
>>>> controllers to test this with.
>>>
>>> i got a hold of a few 3ware controllers and used these for the disk 
>>> array instead of the software raid. unfortunately, it still broke.
>>
>> after much more experimentation and buying new hardware, i got a 
>> things working. i did eventually try doing this on the hardware i had 
>> using opensuse 11.2 and centos 5.4. same problems. luckily, i was 
>> able to convince my boss to let me buy some new 10 gig nics cause 
>> those are the only thing that didn't change. i ordered some cards 
>> from chelsio (pcie, dual port cx4) and just got them on wednesday. 
>> put them in, configure them, and start syncing. never hiccuped. so, i 
>> guess for anyone else wanting to try this, avoid using 10gig pcie 
>> intel nics.
>>
>> mike
>
> Hi,
>
> Can you please give me the exact Part-Number of the Cards that work 
> from chelsio?
>
> And by the way the exact Model/Part-Number from intel, the ones that 
> don't worked?

my intel cards are the supermicro aoc-stg-i2. i can't find the card on 
supermicro site any more but it is very similar to the aoc-utg-i2 which 
is still listed. both just use the 82598EB chip. only difference is the 
form factor.

my chelsio cards are the N320E-CXA.

mike


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