[hcoop/debian/openafs.git] / src / bu_utils / fms.doc

Copyright 2000, International Business Machines Corporation and others.
All Rights Reserved.

This software has been released under the terms of the IBM Public
License.  For details, see the LICENSE file in the top-level source
directory or online at http://www.openafs.org/dl/license10.html

fms - file mark size evaluation

Fms takes a single argument, the tape device to be used.
To use fms:
 	1) place a scratch tape in the selected tape drive
	2) fms <tape special file>
	   e.g.
	   fms /dev/rmt0

Fms provides a visual trace of its activity. It runs for quite some time,
possibly in excess of 6 hours on 8mm tape drives. Upon termination, a
brief summary of results will be found in the log file, fms.log, which
is created in the current directory.

The tape size and file mark sizes should be adjusted before being used in the
backup system's configuration files. The tape size should be reduced, to 
provide a safety margin (e.g. 10-15% reduction), and the file mark size
should be rounded up or increased.
Commit	Line	Data
805e021f CE	1	Copyright 2000, International Business Machines Corporation and others.
	2	All Rights Reserved.
	3
	4	This software has been released under the terms of the IBM Public
	5	License. For details, see the LICENSE file in the top-level source
	6	directory or online at http://www.openafs.org/dl/license10.html
	7
	8	fms - file mark size evaluation
	9
	10	Fms takes a single argument, the tape device to be used.
	11	To use fms:
	12	1) place a scratch tape in the selected tape drive
	13	2) fms <tape special file>
	14	e.g.
	15	fms /dev/rmt0
	16
	17	Fms provides a visual trace of its activity. It runs for quite some time,
	18	possibly in excess of 6 hours on 8mm tape drives. Upon termination, a
	19	brief summary of results will be found in the log file, fms.log, which
	20	is created in the current directory.
	21
	22	The tape size and file mark sizes should be adjusted before being used in the
	23	backup system's configuration files. The tape size should be reduced, to
	24	provide a safety margin (e.g. 10-15% reduction), and the file mark size
	25	should be rounded up or increased.