[PATCH v1 0/2] Fix failover to non integrity NVMe path

[Hannes Reinecke]

On 4/24/23 07:11, Christoph Hellwig wrote:
> On Sun, Apr 23, 2023 at 05:13:28PM +0300, Max Gurtovoy wrote:
>> Hi Christoph/Sagi/Martin,
>>
>> We're encountered a crash while testing failover between NVMeF/RDMA
>> paths to a target that expose a namespace with metadata. The scenario is
>> the following:
>> Configure one initiator/host path on PI offload capable port (e.g ConnectX-5
>> device) and configure second initiator/host path on non PI offload capable
>> port (e.g ConnectX-3).
> 
> Hmm.  I suspect the right thing to do here is to just fail the second
> connect.

Yeah, I'm slightly unhappy with this whole setup.
If we were just doing DIF I guess the setup could work, but then we have 
to disable DIX (as we cannot support integrity data on the non-PI path).
But we would need an additional patch to disable DIX functionality in 
those cases.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
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