Data corruption with the mfi(4) driver

[Kashyap Desai]

Francois Tigeot,

Thanks for the post.

Does it means DragFly will add below line in "loader.conf" to keep mrsas
as default priority ?
hw.mfi.mrsas_enable=1

OR

Any plan to change the probe return value of mrsas and mfi  ?


` Kashyap

> -----Original Message-----
> From: owner-freebsd-scsi at freebsd.org [mailto:owner-freebsd-
> scsi at freebsd.org] On Behalf Of Francois Tigeot
> Sent: Thursday, July 10, 2014 2:53 PM
> To: FreeBSD-scsi
> 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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