svn commit: r250599 - head/usr.sbin/mfiutil

[Mark Johnston]

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: