Document kern.cam.ada.legacy_aliases, while I'm there also fix some typos.
MFC after: 2 weeks
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=284607
@ -25,7 +25,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 22, 2014
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.Dd June 19, 2015
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.Dt ADA 4
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.Os
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.Sh NAME
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@ -45,14 +45,14 @@ The host adapter must also be separately configured into the system before an
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.Tn ATA
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direct access device can be configured.
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.Sh COMMAND QUEUING
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Command queueing allows the device to process multiple transactions
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Command queuing allows the device to process multiple transactions
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concurrently, often re-ordering them to reduce the number and length of
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seeks.
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.Tn ATA
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defines two types of queueing:
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.Tn TCQ (Tagged Command Queueing, PATA legacy)
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defines two types of queuing:
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.Tn TCQ (Tagged Command Queuing, PATA legacy)
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and
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.Tn NCQ (Native Command Queueing, SATA) .
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.Tn NCQ (Native Command Queuing, SATA) .
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The
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.Nm
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device driver takes full advantage of NCQ, when supported.
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@ -146,6 +146,16 @@ instead of
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.Pa /etc/sysctl.conf .
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The global default is currently 1.
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The per-device default is to leave it as-is (follow global setting).
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.It Va kern.cam.ada.legacy_aliases
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.Pp
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This variable determines whether
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.Pa /dev/ad Ns Ar Y
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symbolic links are created,
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which tries to mimic old
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.Xr ata 4
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numbering.
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Set to 1 to enable legacy aliases symlinks, 0 to disable.
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The default is currently enabled.
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.El
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.Sh FILES
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.Bl -tag -width ".Pa /dev/ada*" -compact
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