drtest.8

<B>Digital的Unix操作系统VAX 4.2源码</B>

.\" SCCSID: @(#)drtest.8	8.1	9/11/90
.TH drtest 8 VAX
.SH Name
drtest \- standalone disk test program
.SH Description
.NXR "drtest program"
.NXR "disk" "testing"
The
.PN drtest
program
is a standalone program used to read a disk 
track by track. 
It was primarily intended as a test program 
for new standalone drivers, but has shown
useful in other contexts as well, such as 
verifying disks and running speed
tests. For example, when a disk has been formatted
(by 
.MS format 8v ), 
you can check that hard errors have been taken care of by running 
.PN drtest .
No hard errors should be found, but in many cases 
quite a few soft ECC errors will be reported.
.PP
While
.PN drtest
is running, the cylinder number is printed on
the console for every 10th cylinder read.
.SH Examples
.NXR(e) "drtest program" "running"
A sample run of 
.PN drtest
is shown below.  
In this example (using a 750), 
.PN drtest
is loaded from the root file system;
usually it
will be loaded from the machine's
console storage device.  Boldface means user input.
As usual, the number sign (#) and the at sign (@)
can be used to edit input.
.EX
.sp 1
>>>\fBB/3\fR
%%
loading hk(0,0)boot 
Boot
: \fBhk(0,0)drtest\fR
Test program for stand-alone up and hp driver

Debugging level (1=bse, 2=ecc, 3=bse+ecc)?
Enter disk name [type(adapter,unit), e.g. hp(1,3)]? \fBhp(0,0)\fR
Device data: #cylinders=1024, #tracks=16, #sectors=32
Testing hp(0,0), chunk size is 16384 bytes.
\fI(chunk size is the number of bytes read per disk access)\fP
Start ...Make sure hp(0,0) is online
 ...
\fI(errors are reported as they occur)\fP
 ...
\fI(...program restarts to allow checking other disks)\fP
\fI(...to abort halt machine with ^P)\fP
.EE
.SH Diagnostics
The diagnostics are intended to be self explanatory. Note, however, that 
the device number
in the diagnostic messages is identified as  \fItypeX\fR instead of 
\fItype(a,u)\fR where \fIX\fR = a*8+u, for example, hp(1,3) becomes hp11.
.SH See Also
bad144(8), format(8v)