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authordelphij <delphij@FreeBSD.org>2015-06-19 21:26:06 +0000
committerdelphij <delphij@FreeBSD.org>2015-06-19 21:26:06 +0000
commitf4412896225a1355dff501f3834c9934f50faf91 (patch)
tree03b49a351ba10b7f05b9510b1fe836d240776382
parent116904d3aae86db7b478c4a5bbf1005d3e2a05d5 (diff)
downloadFreeBSD-src-f4412896225a1355dff501f3834c9934f50faf91.zip
FreeBSD-src-f4412896225a1355dff501f3834c9934f50faf91.tar.gz
Document kern.cam.ada.legacy_aliases, while I'm there also fix some typos.
MFC after: 2 weeks
-rw-r--r--share/man/man4/ada.420
1 files changed, 15 insertions, 5 deletions
diff --git a/share/man/man4/ada.4 b/share/man/man4/ada.4
index 6f2964e..3a186ae 100644
--- a/share/man/man4/ada.4
+++ b/share/man/man4/ada.4
@@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd October 22, 2014
+.Dd June 19, 2015
.Dt ADA 4
.Os
.Sh NAME
@@ -45,14 +45,14 @@ The host adapter must also be separately configured into the system before an
.Tn ATA
direct access device can be configured.
.Sh COMMAND QUEUING
-Command queueing allows the device to process multiple transactions
+Command queuing allows the device to process multiple transactions
concurrently, often re-ordering them to reduce the number and length of
seeks.
.Tn ATA
-defines two types of queueing:
-.Tn TCQ (Tagged Command Queueing, PATA legacy)
+defines two types of queuing:
+.Tn TCQ (Tagged Command Queuing, PATA legacy)
and
-.Tn NCQ (Native Command Queueing, SATA) .
+.Tn NCQ (Native Command Queuing, SATA) .
The
.Nm
device driver takes full advantage of NCQ, when supported.
@@ -146,6 +146,16 @@ 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).
+.It Va kern.cam.ada.legacy_aliases
+.Pp
+This variable determines whether
+.Pa /dev/ad Ns Ar Y
+symbolic links are created,
+which tries to mimic old
+.Xr ata 4
+numbering.
+Set to 1 to enable legacy aliases symlinks, 0 to disable.
+The default is currently enabled.
.El
.Sh FILES
.Bl -tag -width ".Pa /dev/ada*" -compact
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