Data corruption with the mfi(4) driver

[Daniel Braniss]

On Jul 10, 2014, at 2:50 PM, Steven Hartland <killing at multiplay.co.uk> wrote:

> ----- Original Message ----- From: "Francois Tigeot" <ftigeot at wolfpond.org>
> 
> 
>> On Thu, Jul 10, 2014 at 12:24:21PM +0100, Steven Hartland wrote:
>>> The key thing to determine here are precise factors of the corruption your
>>> seeing as it looks like there is some mixing up of issues
>> My original mail was intended as a head's up notice; I don't have enough
>> information to fill in every detail and point to a particular root cause so
>> far.
>>> Given this could you confirm:-
>>> 1. Hardware
>>> 1.1. LSI card / generation
>> Dell Rx20 server generation
>> I have personally seen the issue on a Dell R720xd with a LSI Dell Perc H710
>> adapter. PCI Id:
>> mfi0 at pci0:3:0:0: class=0x010400 card=0x1f341028 chip=0x005b1000 rev=0x05
>> hdr=0x00 but have had private reports from at least two different machines
>> having the same problem.
> 
> Perc H710 is 2208 based.
> 
>> All other parameters are variable.
> 
> They may be variable but need a point of reference, so detailing the examples
> is key.

we have several machines with said PERCs, used as ZFS/NFS for postgres to large dna sequences
and have yet to receive complains of data corruption, this does not mean the absence of them :-), but
considering the amount of storage/servers some user should have complained by now …

so, is someone else in FreeBSD 9.2/3 seeing such corruptions?
BTW, the only issue we had was when the server was connected at 10G we did have a lot of
data corruption which was solved by turning TSO off.

danny


> 
>   Regards
>   Steve
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