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1993-11-02
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The Problem of "Ownership"
Please find below information regarding the a situation described
by several users experiencing spurious "disk full" or similar
errors when using NetWare 2.x, 3.x and 4.x.
This is a fairly common problem, affecting any application which
needs to extend a file beyond its current length, such as a
database application. It does not affect applications which read
and write whole files, such as word processors.
The problem is caused by at least one file used by the
application not having a valid Owner stored as part of its file
attributes. NetWare requires that an Owner be assigned to each
file to allow accounting of disk block usage and to enable disk
space restriction to operate effectively.
The origin of the problem is either : deletion (using SYSCON,
NETADMIN or NWADMIN) of the user who originally created the
file(s) OR by a backup/restore utility not correctly setting the
Owner information during the restore process.
Without a valid Owner, an application attempting to extend a file
will receive a DOS error code, usually "disk full", which is
interpreted in a number of different ways by commercial
applications. The error 24 returned by Clipper is an example of
such an error.
The solution is to ensure that all files being used have a valid
Owner. The NetWare utility, FILER, can be used to mark one or
more files and to change the Owner of those files. The NetWare 4.x
FLAG command now includes the option to modify the Owner of a file
from the command line.
It is suggested unowned files have their Owner changed to SUPERVISOR,
as this user will never be deleted.
A number of third party utilities exist which allow amendment of
the file Owner from the command line. Please see the following
page.
Third party utilities to detect/correct Ownership problem
These utilities are available from the NOVUSER forum on
Compuserve.
[72064,1052] Lib:14
LOC200.ZIP/Bin Bytes: 97635, Count: 162, 04-Aug-93
Title : LOCATE v.2.00 - File Finder and More! - DOS and
Keywords: HUTCHINS ASP LOCATE SEARCH FIND CHANGE OWNER NOVELL NETWARE LAN
Very fast, flexible file find and maintenance tool for DOS and
Novell NetWare. Colorful output. Find files, find text within files,
search multiple drives, search PATH or search MAP only. Search by file
owner under NetWare 2.x/3.x. Search by date, time, attributes. Delete
files. SET/ Change date, time, attributes, and even NetWare owner for
files! Run commands and build batch files for specified files.
[70760,151] Lib: 9
NO-OWN.ZIP/Bin Bytes: 11160, Count: 72, 19-Jul-93
Title : MW-TEST - The No_Owner Demonstration Program
Keywords: FILES NO OWNER NA NOOWNER NDIR MDIR MWATCH DANA FILE
Does your network contain important databases? Do you know the effect
of unowned files on your NW 2.X, 3.X, AND 4.0 File servers? Well,
MW-TEST will show you, on your network! MW-TEST will create a user, a file,
change the owner to the new user, delete user (creating unowned file), and
then continously open, write, and close the file until an error occurs. The
DOS Disk Full error can result in lost data and damaged files! Used by
Novell to verify problem on NW 4.0! From DanaSoft - see MWATCH NLM and MDIR
for protection!
[75730,2354] Lib: 7
OWNER1.ZIP/Bin Bytes: 16280, Count: 405, 05-Jul-93(09-Jul-93)
Title : fix "NO OWNER" problem
Keywords: OWNER C CLIENT SDK PUBLIC DOMAIN
v1.02 of the OWNER.EXE utility. Searches multiple server volumes/
subdirectories, reports "NO OWNER" files to screen or report file, changes
file owner to specified user name or SUPERVISOR. Some minor fixes to
v1.01. For further information on this version see read.me file. Public
Domain by Hans Wieser
[70760,151] Lib: 7
MDIR.ZIP/Bin Bytes: 13970, Count: 432, 28-May-93
Title : MDIR - The Original File Ownership Utility
Keywords: FILER MDIR NDIR FILE OWNERSHIP OWNER NA DANA MWATCH NLM
DanaSoft releases version 2.1 of MDIR, the command-line file
ownership utility. Protect your NetWare 2.X, 3.X (4.X soon!) network from
unowned files. Allows you to convert from one owner to another, search for
owners, detect and fix unowned files, AND MUCH MORE! Included demo
identifies unowned files on your network. DanaSoft has been providing
solutions for unowned files for more than three years! See MWATCH.ZIP and
MW-TEST.ZIP. This utility is a must have for every administrator. [Novell
Professional Developer] [Yes, ..]
Marcus Williamson
Novell Consulting Services (Europe)
71333,1665