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drtest(8) [bsd man page]

DRTEST(8)						      System Manager's Manual							 DRTEST(8)

drtest - standalone disk test program DESCRIPTION
Drtest 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 format- ted (by format(8)), you can check that hard errors has been taken care of by running drtest. No hard errors should be found, but in many cases quite a few soft ECC errors will be reported. While drtest is running, the cylinder number is printed on the console for every 10th cylinder read. EXAMPLE
A sample run of drtest is shown below. In this example (using a 750), 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, ``#'' and ``@'' may be used to edit input. >>>B/3 %% loading hk(0,0)boot Boot : hk(0,0)drtest 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)]? hp(0,0) Device data: #cylinders=1024, #tracks=16, #sectors=32 Testing hp(0,0), chunk size is 16384 bytes. (chunk size is the number of bytes read per disk access) Start ...Make sure hp(0,0) is online ... (errors are reported as they occur) ... (...program restarts to allow checking other disks) ( abort halt machine with ^P) DIAGNOSTICS
The diagnostics are intended to be self explanatory. Note, however, that the device number in the diagnostic messages is identified as typeX instead of type(a,u) where X = a*8+u, e.g., hp(1,3) becomes hp11. SEE ALSO
format(8V), bad144(8) AUTHOR
Helge Skrivervik 4.2 Berkeley Distribution May 19, 1986 DRTEST(8)

Check Out this Related Man Page

newfs(8)						      System Manager's Manual							  newfs(8)

       newfs - construct a new file system

       /etc/newfs [ -N ] [ -n ] [ -v ] [ mkfs-options ] special disk-type

       The command is a front-end to the program.  The program looks up the type of disk a file system is being created on in the disk description
       file calculates the appropriate parameters to use in calling then builds the file system by forking If the file system is a root partition,
       installs the necessary bootstrap program in the initial 16 sectors of the device.

       If there is no disk description for the specified disk type in the file, the program will use the subroutine to derive disk geometry infor-
       mation from the controlling device driver.  This functionality is provided for MSCP and SCSI disks.

       -N	 Runs in no update mode.  In this mode, will not write to

       -n	 Prevents the bootstrap program from being installed.

       -v	 Instructs to print out its actions, including the parameters passed to

       Options which may be used to override default parameters passed to are:

       -s size	 The size of the file system in sectors.

       -b block-size
		 The block size of the file system in bytes.

       -f frag-size
		 The fragment size of the file system in bytes.

       -t #tracks/cylinder
       -c #cylinders/group
		 The number of cylinders per cylinder group in a file system.  The default value used is 16.

       -m free space %
		 The percentage of space reserved from normal users; the minimum free space threshold.	The default value used is 10%.

       -o optimization
		 Specifies whether the file system will optimize for space or for time.

       -r revolutions/minute
		 The speed of the disk in revolutions per minute (normally 3600).

       -S sector-size
		 The size of a sector in bytes (almost never anything but 512).

       -i number of bytes per inode
		 This specifies the density of inodes in the file system.  The default is to create an inode for each 2048 bytes  of  data  space.
		 If fewer inodes are desired, a larger number should be used; to create more inodes a smaller number should be given.

       For disk geometry and file system partition information

       To actually build the file system

       For boot strapping program

See Also
       disktab(5), fs(5), chpt(8), fsck(8), format(8v), creatediskbyname(3x), mkfs(8), tunefs(8)
       "A Fast File System for UNIX", Supplementary Documents, Volume 3: System Manager


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