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From: Sean Bruno <sbruno@FreeBSD.org>
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Subject: svn commit: r209266 - head/usr.sbin/mptutil
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Author: sbruno
Date: Thu Jun 17 19:28:56 2010
New Revision: 209266
URL: http://svn.freebsd.org/changeset/base/209266

Log:
  Expand man page to document the fact that mptutil/mpt doesn't support RAID volumes in excess of 2TB.  Document workaround via geom or zfs
  
  Modified submitter's original patch to reference why this is broken and what to do to work around the issue.
  
  Submitted by:	hubert@tournier.org
  PR:		bin/147572
  Reviewed by:	jhb
  MFC after:	2 weeks

Modified:
  head/usr.sbin/mptutil/mptutil.8

Modified: head/usr.sbin/mptutil/mptutil.8
==============================================================================
--- head/usr.sbin/mptutil/mptutil.8	Thu Jun 17 19:25:05 2010	(r209265)
+++ head/usr.sbin/mptutil/mptutil.8	Thu Jun 17 19:28:56 2010	(r209266)
@@ -384,3 +384,15 @@ configurations may not work reliably.
 .Pp
 Drive configuration commands result in an excessive flood of messages on the
 console.
+.Pp
+The mpt version 1 API that is used by
+.Nm
+and 
+.Xr mpt 4
+doesn't support volumes above two terabytes.
+This is a limitation of the API.
+If you are using this adapter with volumes larger than two terabytes, use the adapter in JBOD mode.
+Utilize
+.Xr geom 8
+.Xr zfs 1M
+or another software volume manager to work around this limitation.