Data corruption with the mfi(4) driver

[Steven Hartland]

I cant see any information on the actual corruption or cause in that linked
thread do you have any actual details?

There was known corruption issues but these where fixed long ago so would
be good to confirm the details of what you where running and the HW when you
had the issue.

As a point of reference we have mfi backed DB machines here and have not
had any issues with corruption and they have been in production for over
1 1/2 years.

    Regards
    Steve
----- Original Message ----- 
From: "Francois Tigeot" <ftigeot at wolfpond.org>
To: "FreeBSD-scsi" <freebsd-scsi at freebsd.org>
Sent: Thursday, July 10, 2014 10:22 AM
Subject: Data corruption with the mfi(4) driver


> Hi,
> 
> I have encountered catastrophic data corruption with LSI RAID adapters from
> recent Dell servers (R720xd). The adapters apparently worked fine at first
> but eventually destroyed the filesystems of volumes experiencing a high load.
> 
> I found out the hard way a Postgres database import was a sure way to
> reproduce the problem.
> Switching to the mrsas(4) driver made my test machine stable again; I have
> yet to encounter a similar issue with it.
> 
> Now, this particular server was running under DragonFly and not FreeBSD but
> the mfi(4) driver is mostly the same under both operating systems and I have
> found reports of data corruption issues with mfi(4) and recent LSI adapters
> in the archives of this list.
> 
> DragonFly will most likely switch to use mrsas(4) by default for at least the
> LSI Thunderbolt serie of adapters to avoid data loss.
> 
> This mail from the mfi(4) and mrsas(4) maintainer contains more details,
> including a partial list of impacted adapters:
> http://lists.dragonflybsd.org/pipermail/users/2014-July/128703.html
> 
> -- 
> Francois Tigeot
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