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From: Alexander Motin <mav@FreeBSD.org>
Date: Fri, 18 Mar 2011 22:55:32 +0000 (UTC)
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Subject: svn commit: r219759 - projects/graid/head/sbin/geom/class/raid
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Author: mav
Date: Fri Mar 18 22:55:32 2011
New Revision: 219759
URL: http://svn.freebsd.org/changeset/base/219759

Log:
  Add warning about lack of RAID level migration support.

Modified:
  projects/graid/head/sbin/geom/class/raid/graid.8

Modified: projects/graid/head/sbin/geom/class/raid/graid.8
==============================================================================
--- projects/graid/head/sbin/geom/class/raid/graid.8	Fri Mar 18 22:45:43 2011	(r219758)
+++ projects/graid/head/sbin/geom/class/raid/graid.8	Fri Mar 18 22:55:32 2011	(r219759)
@@ -104,7 +104,7 @@ argument specifies the on-disk metadata 
 such as "Intel".
 The
 .Ar label
-argument specifies teh label of the created volume.
+argument specifies the label of the created volume.
 The
 .Ar level
 argument specifies the RAID level of the created volume, such as:
@@ -236,6 +236,13 @@ The GEOM RAID class follows a modular de
 to be used.
 Support for the following RAID levels is currently implemented: RAID0, RAID1,
 RAID1E, RAID10, SINGLE, CONCAT.
+.Sh RAID LEVEL MIGRATION
+The GEOM RAID class has no support for RAID level migration, allowed by some
+metadata formats.
+If you started migration using BIOS or in some other way, make sure to
+complete it there.
+Do not run GEOM RAID class on migrating volumes under pain of possible data
+corruption!
 .Sh EXIT STATUS
 Exit status is 0 on success, and non-zero if the command fails.
 .Sh SEE ALSO