svn commit: r252094 - stable/8/usr.sbin/mfiutil

Mark Johnston markj at
Sat Jun 22 05:32:46 UTC 2013

Author: markj
Date: Sat Jun 22 05:32:45 2013
New Revision: 252094

  MFC r250599:
  Add a remark to the effect that a manually started relearn will always
  result in the battery being completely drained, even in transparent learning

Directory Properties:
  stable/8/usr.sbin/mfiutil/   (props changed)

Modified: stable/8/usr.sbin/mfiutil/mfiutil.8
--- stable/8/usr.sbin/mfiutil/mfiutil.8	Sat Jun 22 05:32:11 2013	(r252093)
+++ stable/8/usr.sbin/mfiutil/mfiutil.8	Sat Jun 22 05:32:45 2013	(r252094)
@@ -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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