[PVE-User] [DRBD-user] Stability issue Proxmox4/DRBD9

[Patrick Kaiser]

Hi all,

i was also just setting up PVE 4.1 with DRBD9. But I’ve setup drbd9 in the “old-way”.

Currently there is no load on the system and everything is working like expected. But now I think about resetup everything with latest Proxmox 3.x and latest DRBD 8.

I do not see any noticeable feature in PVE 4 I will miss in PVE3 but I am thinking more about problems in Upgrade process later on…

Where do you guys got the information, that DRBD 9 is NOT production ready?

thanks,
patrick


On 11 Apr 2016, at 12:08, Jean-Laurent Ivars <jl.ivars at ipgenius.fr> wrote:

> Hi Claudio,
> 
> I wonder the same as you and I’m a little bit afraid about the production ready thing…
> 
> I am wondering about downgrading my whole Proxmox installation to have a stable system rather than using something that can brake any day with a simple update… Do you think the version 4 features worth the risk and I should go your way ?
> 
> Thank you for your answer again
> Best regards,
> 
> 	
> Jean-Laurent Ivars 
> Responsable Technique | Technical Manager
> 22, rue Robert - 13007 Marseille 
> Tel: 09 84 56 64 30 - Mobile: 06.52.60.86.47 
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>> Le 11 avr. 2016 à 10:13, Claudio Nicora <claudio.nicora at gmail.com> a écrit :
>> 
>> Welcome aboard, and thanks for bringing back an issue that nobody took care of since now.
>> It means I was not the alone...
>> 
>> I've had the same issue a few months ago, I've reported it here (and on Proxmox forums) but the issue is still there.
>> 
>> Linbit: nobody took care of it (however it's a kernel crash, should be critical enough...)
>> Proxmox: a kernel with an updated DRBD module (still DRBD 9.0) was released but the issue persisted. Still wondering how a "non-production ready" feature could end up in a "production ready" bundle like Proxmox 4 without a choice to get DRBD 8.4 back.
>> 
>> I've sorted it out by downgrading DRBD module to 8.4 and building the kernel module + DRBD tools on my own.
>> This is the post on Proxmox forum with a backlink to my blog post where I detailed the actions to downgrade the module.
>> I've also set up a script to run after each Proxmox kernel upgrade, just in case.
>> 
>> PS: still waiting for a feedback from Linbit/Proxmox guys ;)
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> 
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