NAME
pt_util - Load or dump a Protection Server database
SYNOPSIS
pt_util
[-w] [-user] [-group]
[-members] [-name] [-system]
[-xtra] [-prdb <prdb file>]
[-datafile <data file>] [-help]
DESCRIPTION
The pt_util command can be used to load or dump the protection
database. It should only be used when ptserver is not running.
The most likely reason to use it is to initialize the protection
database when bringing up a new cell. The current syntax for this,
presented below, needs improvement. pt_util can also be used when
problems are suspected with the database. It can be used to dump the
database or portions thereof, in several different ways, and to reload
it.
The textual representation of the database has the following form: For
users,
name flags/quota viceid ownerid creatorid
For groups,
name flags/quota viceid ownerid creatorid
a-username a-user-viceid
The second line is repeated for each member of the group. When reading
the database, membership is not reported unless -members is also
included.
OPTIONS
If you don’t specify any options, the only thing you’ll learn is the
ubik database epoch and version.
-w Write to the protection database instead of reading. Only the file
arguments make sense in combination with this argument.
-user
When reading, display users.
-group
When reading, display groups (but not necessarily members).
-members
When reading, display groups and also group members.
-name
When reading, follow name hashes, instead of id hashes. This may
print different information if the database was corrupted.
Otherwise, it should print exactly the same information, except in
a different order.
-system
When reading, display system data, or more precisely, do not
display entries with a viced <= -32768 or >= +97537.
-xtra
When reading, display extra users and groups, or more precisely, do
not display entries that are in the range -32767...+97536
inclusive.
-prdb <prdb file>
Specifies the complete pathname of the file in which the Protection
Database resides. Provide the complete name, including the ending
.DB0.
-datafile <data file>
Specify the file to which to dump (or -w from which to read)
textual database records.
CAUTIONS
The file dump format does not include supergroup information, so should
not be used if you have and are using groups within groups.
In all cases, entry timestamps and other information is also not
preserved.
The epoch and version are reported on standard error. On little-endian
machines, they’ll be byte swapped, so may be very random.
EXAMPLES
The following example shows how to initialize the database from
scratch.
Before you do this, make sure ptserver is not running. If you have
multiple database servers, make sure prdb.* does not exist on any
server machine.
Now, type this in EXACTLY, including the leading space on the line
indicated. But do use Control-D at the end, not up-arrow D.
pt_util -w
admin 128/20 1 -204 -204
system:administrators 130/20 -204 -204 -204
admin 1
^D
You will see this:
# pt_util -w
pt_util: /var/lib/openafs/db/prdb.DB0: Bad UBIK_MAGIC. Is 0 should be 354545
Ubik Version is: 2.0
admin 128/20 1 -204 -204
system:administrators 130/20 -204 -204 -204
Error while creating system:administrators: Entry for id already exists
admin 1
pt_util: Ubik Version number changed during execution.
Old Version = 2.0, new version = 33554432.0
#
To make a complete copy of the database,
# pt_util -user -members -datafile /tmp/out
To load from the complete copy,
# pt_util -w -datafile /tmp/out
Don’t do this until you read cautions, above.
PRIVILEGE REQUIRED
The issuer must be logged in as the superuser "root" on a file server
machine to use pt_util.
SEE ALSO
prdb.DB0(5), ptserver(8)
COPYRIGHT
The following copyright covers this documentation:
Copyright (c) 2005 The Regents of the University of Michigan. ALL
RIGHTS RESERVED.
Permission is granted to use, copy, create derivative works and
redistribute this software and such derivative works for any purpose,
so long as the name of the University of Michigan is not used in any
advertising or publicity pertaining to the use or distribution of this
software without specific, written prior authorization. If the above
copyright notice or any other identification of the University of
Michigan is included in any copy of any portion of this software, then
the disclaimer below must also be included.
This software is provided as is, without representation from the
University of Michigan as to its fitness for any purpose, and without
warranty by the University of Michigan of any kind, either express or
implied, including without limitation the implied warranties of
merchantability and fitness for a particular purpose. The regents of
the University of Michigan shall not be liable for any damages,
including special, indirect, incidental, or consequential damages, with
respect to any claim arising out of or in connection with the use of
the software, even if it has been or is hereafter advised of the
possibility of such damages.