Switch the GENERIC kernels for all architectures to the new CAM-based ATA

stack. It means that all legacy ATA drivers are disabled and replaced by
respective CAM drivers. If you are using ATA device names in /etc/fstab or
other places, make sure to update them respectively (adX -> adaY,
acdX -> cdY, afdX -> daY, astX -> saY, where 'Y's are the sequential
numbers for each type in order of detection, unless configured otherwise
with tunables, see cam(4)).

ataraid(4) functionality is now supported by the RAID GEOM class.
To use it you can load geom_raid kernel module and use graid(8) tool
for management. Instead of /dev/arX device names, use /dev/raid/rX.

1 files changed, 28 insertions, 0 deletions

diff --git a/UPDATING b/UPDATING
index c57d8fc..67f9cf2 100644
--- a/UPDATING
+++ b/UPDATING
@@ -22,6 +22,34 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 9.x IS SLOW:
 	machines to maximize performance.  (To disable malloc debugging, run
 	ln -s aj /etc/malloc.conf.)
 
+20110424:
+	The GENERIC kernels for all architectures now default to the new
+	CAM-based ATA stack. It means that all legacy ATA drivers were
+	removed and replaced by respective CAM drivers. If you are using
+	ATA device names in /etc/fstab or other places, make sure to update
+	them respectively (adX -> adaY, acdX -> cdY, afdX -> daY, astX -> saY,
+	where 'Y's are the sequential numbers for each type in order of
+	detection, unless configured otherwise with tunables, see cam(4)).
+
+	ataraid(4) functionality is now supported by the RAID GEOM class.
+	To use it you can load geom_raid kernel module and use graid(8) tool
+	for management. Instead of /dev/arX device names, use /dev/raid/rX.
+
+	No kernel config options or code have been removed, so if a problem
+	arises, please report it and optionally revert to the old ATA stack.
+	In order to do it you can remove from the kernel config:
+	    options        ATA_CAM
+	    device         ahci
+	    device         mvs
+	    device         siis
+	, and instead add back:
+	    device         atadisk         # ATA disk drives
+	    device         ataraid         # ATA RAID drives
+	    device         atapicd         # ATAPI CDROM drives
+	    device         atapifd         # ATAPI floppy drives
+	    device         atapist         # ATAPI tape drives
+	    options        ATA_STATIC_ID   # Static device numbering
+
 20110423:
 	The default NFS server has been changed to the new server, which
 	was referred to as the experimental server. If you need to switch