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Date:      Mon, 13 May 2013 15:00:37 +0000 (UTC)
From:      Mark Johnston <markj@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r250599 - head/usr.sbin/mfiutil
Message-ID:  <201305131500.r4DF0bqZ059479@svn.freebsd.org>

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Author: markj
Date: Mon May 13 15:00:36 2013
New Revision: 250599
URL: http://svnweb.freebsd.org/changeset/base/250599

Log:
  Add a remark to the effect that a manually started relearn will always
  result in the battery being completely drained, even in transparent learning
  mode.
  
  MFC in:		3 days
  Sponsored by:	Sandvine Inc.

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

Modified: head/usr.sbin/mfiutil/mfiutil.8
==============================================================================
--- head/usr.sbin/mfiutil/mfiutil.8	Mon May 13 14:00:24 2013	(r250598)
+++ head/usr.sbin/mfiutil/mfiutil.8	Mon May 13 15:00:36 2013	(r250599)
@@ -573,6 +573,10 @@ Updates the flash on the controller with
 A reboot is required for the new firmware to take effect.
 .It Cm start learn
 Start a battery relearn.
+Note that this seems to always result in the battery being completely drained,
+regardless of the BBU mode.
+In particular, the controller write cache will be disabled during the relearn
+even if transparent learning mode is enabled.
 .It Cm bbu Ar setting Ar value
 Update battery backup unit (BBU) properties related to battery relearning.
 The following settings are configurable:



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