svn commit: r262294 - head/share/man/man4

[Ivan Voras]

Author: ivoras
Date: Fri Feb 21 12:17:27 2014
New Revision: 262294
URL: http://svnweb.freebsd.org/changeset/base/262294

Log:
  Explain how and where kern.cam.ada.write_cache can be set in practical
  situations.
  
  Reviewed by:	hrs
  Approved by:	mav

Modified:
  head/share/man/man4/ada.4

Modified: head/share/man/man4/ada.4
==============================================================================
--- head/share/man/man4/ada.4	Fri Feb 21 11:06:22 2014	(r262293)
+++ head/share/man/man4/ada.4	Fri Feb 21 12:17:27 2014	(r262294)
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd February 8, 2012
+.Dd February 21, 2014
 .Dt ADA 4
 .Os
 .Sh NAME
@@ -129,8 +129,13 @@ The default is currently enabled.
 These variables determines whether device write cache should be enabled
 globally or per-device or disabled.
 Set to 1 to enable write cache, 0 to disable, -1 to leave it as-is.
-Values modified in runtime take effect only after device reset.
-The global default is currently enabled.
+Values modified at runtime take effect only after device reset 
+.Pq using the reset subcommand of Xr camcontrol 8 .
+Because of that, this setting should be changed in
+.Pa /boot/loader.conf
+instead of
+.Pa /etc/sysctl.conf .
+The global default is currently 1.
 The per-device default is to leave it as-is (follow global setting).
 .El
 .Sh FILES