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Document the two sd config options (SDRETRIES, SD_IO_TIMEOUT)

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mjacob 2001-05-22 22:59:38 +00:00
parent 1da3759634
commit a842e90102
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21
share/man/man4/sd.4
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@ -1,4 +1,4 @@
.\" $NetBSD: sd.4,v 1.9 1999/12/23 21:24:03 leo Exp $
.\" $NetBSD: sd.4,v 1.10 2001/05/22 22:59:38 mjacob Exp $
.\"
.\" Copyright (c) 1996
.\" Julian Elischer <julian@freebsd.org>. All rights reserved.
@ -147,6 +147,25 @@ This allows sharing the disk with other operating systems.
.\"on the
.\".Tn SCSI
.\"bus.
.Sh CONFIGURATION OPTIONS
The following
.Xr config 8
options may be applied to
.Tn SCSI
disks as well as to other disks.
.Pp
.Bl -tag -width SD_IO_TIMEOUT
.It Dv SDRETRIES
Set the number of retries that will be performed for operations it
makes sense to retry (e.g., normal reads and writes). The default
is four (4).
.It Dv SD_IO_TIMEOUT
Set amount of time, in milliseconds, a normal read or write is expected
to take. The defaults is sixty seconds (60000 milliseconds). This is used
to set watchdog timers in the
.Tn SCSI
HBA driver to catch commands that might have died on the device.
.Pp
.Sh IOCTLS
The following
.Xr ioctl 2