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mpt.4: Warn about unexpected behaviour on older controllers

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Older controllers have errata which causes the disk controller to wrap
data to other LBAs, causing data to be overwritten. [1]

While here, fix a small typo.

1: https://www.broadcom.com/support/knowledgebase/1211161496563/3-terabyte-3tb-capacity-drives-on-lsi-megaraid-and-3ware-control

PR: 220343
Submitted by:	Sebastian Oswald <sebastian at rostwald.de>
Reviewed by:	0mp
Event:		January 2021 Bugathon
Differential Revision:	<https://reviews.freebsd.org/D28201
This commit is contained in:
Sebastian Oswald 2021-01-17 00:27:43 +01:00 committed by Daniel Ebdrup Jensen
parent ef698fabe4
commit 0ec6c03c76
1 changed files with 10 additions and 2 deletions
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12
share/man/man4/mpt.4
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@ -35,7 +35,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd July 23, 2011
.Dd January 16, 2021
.Dt MPT 4
.Os
.Sh NAME
@ -119,7 +119,7 @@ driver can be found onboard on many systems including:
.Pp
.Bl -bullet -compact
.It
Dell PowerEdge 1750 thru 2850
Dell PowerEdge 1750 through 2850
.It
IBM eServer xSeries 335
.El
@ -149,6 +149,14 @@ This driver also supports target mode for Fibre Channel cards.
This support may be enabled by setting the desired role of the core via
the LSI Logic firmware utility that establishes what roles the card
can take on - no separate compilation is required.
.Sh WARNINGS
Most controllers supported by the
.Nm
driver suffer from limitations on supported disk size (mostly <2TB).
While most controllers will truncate usable disk size, others might
behave unexpetedly and can cause severe data loss.
Refer to the datasheet of the chipset and firmware version for information
about supported disk size and limitations.
.Sh SEE ALSO
.Xr cd 4 ,
.Xr ch 4 ,