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author | delphij <delphij@FreeBSD.org> | 2015-06-19 21:26:06 +0000 |
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committer | delphij <delphij@FreeBSD.org> | 2015-06-19 21:26:06 +0000 |
commit | f4412896225a1355dff501f3834c9934f50faf91 (patch) | |
tree | 03b49a351ba10b7f05b9510b1fe836d240776382 | |
parent | 116904d3aae86db7b478c4a5bbf1005d3e2a05d5 (diff) | |
download | FreeBSD-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.4 | 20 |
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 |