Subject: 1.606: How To Configure Dialup Slip
IBM's WWW Page <
Http://www.ibm.com/> can let you to a helpful document
<
http://www.Austin.ibm.com/pub/www/services/aix_service/faxes/slip.doc.zap>
From:
Marvin@tornado.oche.de (Christian Bode)
IF you don't have problems with slattach you should Have PTF
Bos.obj 3.2.0.0.u411505 Installed. I Assume That You Did The Right
Ifconfig command to setup your slip-device (for example SL0).
CREATE A Group Called SLIP.
2. Create a User Slip with smit like this:
[Entry Fields]
* User name [slip]
Administrative user? True
User ID []
Login User? True
PRIMARY Group [SLIP]
Group set [SLIP]
Administrative Groups [SYSTEM]
Su Groups [SLIP]
Home Directory [/ Home / SLIP]
Initial Program [/ bin / sh]
User information [slip-dialup]
Another User Can Su To User? False
User Can rlogin? True
Trusted path? NOSAK
Valid ttys [/ dev / tty1]
Audit classes []
PRIMARY Authentication Method [SYSTEM]
Secondary Authentication Method [NONE]
Max File Size [2097151]
Max CPU TIME [-1] max data segment [262144]
Max Stack Size [65536]
Max Core File Size [2048]
Max Physical Memory [65536]
File Creation Umask [022]
Expiration Date (mmddhhmmy) [0]
3. CREATE A TTY with GETTY ON IT:
Add A TTY
[Entry Fields]
Tty Type TTY
TTY Interface RS232
Description Asynchronous Terminal
Parent Adapter SA0
* Port Number [S1]
Baud Rate [38400]
Parity [none]
Bits Per Character [8]
Number of Stop Bits [1]
Terminal Type [DUMB]
State to Be configured at boot time [available]
DMA ON
Read Trigger 0, 1, 2, 3
Transmit Buffer Count [16]
Name of Initial Program To Run [/ etc / getty]
NOTE: The Following Attributes Are Only Applicable IF / etc / Getty IS
Specified as the initial program to run.
ENABLE PROGRAM? RESPAWN
Run Level 2
Enable login share
Time Before Advancing To Next Port Setting [0]
Stty Attributes for Run Time [HUPCL, CREAD, BRKINT>
Stty Attributes for login [Hupcl, Cread, Echoe,>
Run Shell Activity Manager NOOPTIONAL LOGGER NAME []
4. Change The Hardware Characteristics So That It Uses No Xon / Xoff Handshake
Section 1.613 Also Talks About TTY Flow Control.
5. A (New) .profile Template for SLIP Accounts Is Provided in Section
8.07. The Author, David Migliavacca, Writes, "I Would Also Like To
Assert That, To my experience, it is not required what the Slip User
Be Made "administrative" or member of "system" as Other parts of the
FAQ (AND THE Original Script) Say. At Least On My Machine 8-). I NOW
Create Slip Users as Members of Group Slip, IT Being The Only Group;
ALLOWT TTYS Are Set To The Available Modem Lines Only; Their Home
Directory is Owned by root and the .profile is on-flwa
SLIP.
Here's Another Scenario:
From:
Oosten@angelo.ee.ualberta.ca (Brian Oostenbrink)
Operating system: IBM AIX 3.2.1 and 3.2.3
Configuring TWO RS6000S Via a Serial Line Interface Protocol (SLIP)
Connection over TWO US Robotics Sportster 14,400 MODEMS.
The Aix Implementation of Slip is Slightly Different from Most Others.
THE IFCONFIG COMMAND IS USED TO BRING UP A Serial Interface, and the
Slattach Command Is Used to Connect The Interface To The Serial Port
Used for the connection. Dialer Device Commands Can Also Be Issued WHEN
Invoking the slattach command, using uucp chat syntax.
The Following Describes a connection Between Two Machines:
Local.j.k.l
EtherNet IP Address 129.128.127.21
SLIP Interface IP Address 129.1.2.1
REMOTE.A.B.C
Ethernet IP Address 129.11.22.44
SLIP Interface Address 129.11.22.1
Interface Configuration
Each Machine Must Have a Separate IP Address Dedicated to the SLIP
Interface. on remote.j.k.l, start the slip interface with: ifconfig SL0 129.11.22.1 129.128.127.1 Up
AND on local.a.b.c:
IFConfig SL0 129.128.127.1 129.11.22.1 Up
IT IS IMPORTANT IN LATER VERSIONS OF AIX 3.2.3 To Use the Same Slip
Interface # as the ptty port #, ie. if use tty12, use ifconfig SL12
INSTEAD OF SL0.
At this point the interfaces are ready to be connect.
2. TTY Configuration
The Tty Ports on Both Machines WERE Configured in An Identical Manner
Using smit.
[Entry Fields]
Tty Type TTY
TTY Interface RS232
Description Asynchronous Terminal
Parent Adapter SA0
Port Number []
Baud Rate [38400]
Parity [None]
Bits Per Character [8]
Number of Stop Bits [1]
Terminal Type [DUMB]
State to Be Configured At Boot Time [Available]
DMA ON
Read Trigger 0, 1, 2, 3
Transmit Buffer Count [16] #
Name of Initial Program To Run [etc / getty]
Note: The Following Attributes Are Only Applicable IF / etc / Getty IS Specified
As the initial program to run.
ENABLE PROGRAM? RESPAWNRUN LEVEL 2
ENABLE login disable
Time Before Advancing To Next Port Setting [0] #
Stty Attributes for Run Time [HUPCL, CREAD, BRKINT, ICR>
Stty Attributes for login [HUPCL, CREAD, Echoe, CS8,>>
Run Shell Activity Manager NO
Optional logger name []
On Older Versions of Aix, We Encountered Some Problems Disabling Getty, And
Resorted to Changing the / etc / inittab file directly. for example, change
TTY0: 2: Respawn: / etc / getty / dev / tty0
TO
TTY0: 2: OFF: / etc / getty / dev / tty0
This Will Disable Getty from Running. After Creating The Slip Tty Device,
You Will Need To Change Its Hardware Configuration To Disable XON / XOFF
Flow Control. Software Flow Control Should Not Be Used for SLIP. TYPE
'smit chtty', and the select sub themself 2: hardware settings.
Most of the parameters in the Tty Configuration Are The Defaults.
3. Modem Configuration
The Modems Were Configured As Follows:
RTS / CTS Flow Control enabled.
XON / XOFF Software Flow Control Disabled. Usually this is Automatic IF
RTS / CTS is enabled.
Data Rate, Terminal to Modem = Fixed.
This is the baud rate from the tty port to the modem. We buy a
Fixed Modem-Port Transfer Rate, Set to the Fastest Speed Supported
Both the Tty Port and The Modem. NEWER Modems Can Use a higher
Transfer Rate Between The Modem and Serial Port Than the Modem To
Modem Rate, Which is Necessary To Use Data Compression Effective.
In Our Setup, We use 14.4 kbaud modems with a port speed of 38.4kbaud. If you Modem Supports this Feature, Use IT, OtherWise Set
The Port Speed Equal To The MODEM Connection Rate. on The USR
Sportster AT & B1 Fixes The Serial Port Rate To this of the last
At command. The speed parameter of the slattach command can be becom
Used to Ensure That This Rate is this set in the Tty Configuration.
Error Correction Enabled - Not Mandatory, But A Good Idea
Data Compression - Not Required, But IT Helps, Especially For Text
TRANSFERS.
Auto Answer - if The Slip Connection Is To BE Initiated from Either
Machine, Both Modems Should Be Set To Auto Answer, Otherwise, Just
The answering model.
It is a good idea to configure the modem and then save the settings
To NVRAM, SO That the Correct Settings Can Always Be Restored by the
Slattach Command.
4. UUCP Configuration FILES
/ usr / lib / uucp / defices
/ usr / lib / uucp / dialars
The Devices File Must Contain An entry with the Tty and Serial Port
SPEED Used for the interface. in Our Example,
Direct TTY0 38400 SLIPDIALERERERERER
The keyword 'slipdialer' is merely an index INTO The Dialers File.
For Our Purposes, The Slipdialer Entry In The Dialers File IS Simply:
SLIPDIALER
This entry can also contain uucp chat commists, or the chat commands
Can be incdued in the slattach command.
5. Slattach Invocation
Slattach Connects The Device on The Tty Port To The Slip Interface
Created by ifconfig, and sends any commists to the Tty Device IF
Needed. for outd.j.k.l Would Never Initiate A Call,
Only Answer Incoming Calls. Therefore We Execute:
Slattach TTY0 38400 '"" ATZ OK ""
Which Connects the Tty At 38400 Baud. We Could Also Simply Run
Slattach TTY0IE. WITHOUT Any Modem Commands, But The Mode Mode Port Speed May Not
BE CORRECTLY SET THIS WAY. In Addui, The Atz Command Ensures The
Modem is set to the nvram settings.
On local.a.b.c Type:
Slattach TTY0 38400 '"" "" "" "" "" 4
This Establishes the link at 38400 baud, And Executes the Dial String
As Shown. The Dial String is a uucp chat string and is configured
In an expect send expert send ... format. The string:
'"" "ATZ OK / PATDT4925871 BIS" "'
Is Interpreted AS:
EXPECT "" "(Null String) from modem
Send atz to modem
Expect Ok from Modem
Send / PATDT4925871 to MODEM
Expect Bis from MODEM
Bis is The end of the connection. You Could Use any portion of
The string returned by the modem upon a connection as the expect
String. It May Be Wiser To Simply Expect Connect Since All
Connections Should Return this string.
The Null Strings Are Necessary Because The First Parameter of The First Parameter
UUCP IS An Expected String from The Modem, Which Can Only Be a NULL
String Until The Modem Has Been Given a Command.
The Last Parameter (4) of the slattach command is the debug level.
A Debug Level of 4 Displays The Uucp Chat Strings, Which IS USEful
For Checking the Modem Status.
6. routing
Ifconfig is sufficient if all you want to do is talk betWeen THE
Two Hosts. if you are running slip so this can talk to more
Than Just That One Other Host You Have to Advertise Your Address.
1) ARP -S 802.5 IAGO 10: 00: 5A: B1: 49: D8 PUB
Where 802.5 is a token-raping network the hardware address can
Be Obtained with `Netstat -v` and IAGO WAS THE SLIP Client (My
PC At Home :) Pub is The Important Part It Means "Published" You May Want to Run this at boot time.
Routing through the slip link is similiar to routing of any gateway.
Invoking the ifconfig command automatic sets up a route between
The Two Slip Machines. An entry in / etc / hosts or the named Database
Should Be Made, with the Same Machine Name Used for The Slip Address
As The Ethernet Address On Each Machine. For Example, IN / ETC / HOSTS
On Remote.a.b.c (and any other machine on remote.a.b.c ethernet):
129.11.22.44 Remote.a.b.c # Ethernet Address
129.11.22.1 Remote.a.b.c # Slip Address
It is preformed to place the Ethernet Address in the Hosts File
Before the slip address so remote.a.b.c Will resolve to the
Ethernet address. by is import, it is important to have ketch
Addresses in The Reverse File with The Same Name. We Experienced
Difficulties with nfs mounting over the slip link, oowing to some
Machine Interpreting NFS Requests from One of the Two Slip Machines
ascoming from the slip address, while the slip machine believed it
WAS sending The Request from The Ethernet Address. This Problem WAS
Eliminated by Having Both Addresses Reverse Resolve To The Same Name.
7. Performance
At a modem speed of 14.4 kbaud and a port speed of 38.4 kbaud, WE
Realized a Transfer Rate Through FTP of About 3.5 KB / S for Text
Files, And 1.3 Kb / s for compressed files.
Subject: 1.607: Where is DCE Discussed?
DCE is The Distributed Computing Environment, Which is Roughly A
Flexible Client-Server Architecture for Heterogenous Platforms.
For more information, Take a Look in
Comp.soft-sys.dce.
Subject: 1.608: How do i make / var / spool / mail mountable?
From:
Petersen@pi1.physik.uni-stuttgart.de (Joerg Petersen) IN Our Cluster We Share A / USR / Local Disk. WE Have A DIRECTORY
/ usr / local / spool / mail and / var / spool / mail is soft-linked to it.
From:
Fred@hal6000.thp.uni-duisburg.de (fred hucht)
Several Problems Has Been Reported On Sharing The Mail Directory VIA
NFS. The problems may ly. H or more sendmail daem and / or
Mail Readers Access A User's Mail File Simultanously, Because of NFS '
FILE LOCKING MECHANISM.
WE Use Another Method Here: Every User Has One Line in His / Her
$ Home / .forward file what reads
xxx@mainserver.domain.name
Where xxx is the user node and mainserver.domain.name is the full
Hostname of One of the Machines. The all incoming mail to all mathing
Is Forwarded to Main Server, While Mainserver Ignores this line.
Subject: 1.609: Getty Spawning Too Rapidly
From:
Aslam@abaseen.lums.edu.pk (sohail aslam)
The Problem Can Occur Due a Number of Modem Settings. The Most
FreQuent is that the echo is not disabled on modems That area
ACCEPT INCOMING CALLS. in Hayes Language, ATE0 Disables Echo.
IF echo is enabled, The login prompt Sent by the DTE (Computer)
Is echoed back to it. it. it. ITEN ISSUES PASSWORD: "Prompt Which
The MODEM CONVENIENTLY EchoS Back Again. And The Cycle Goes ON.
Another setting to check is the q registers which controls
Modem's response to the dte. The hayes command atq0 enables
RESULTS CODES. The q register in conjunction with THE X and
The v registers, Reports Back to the DTE The Status of the incoming
Or outgoing call, and the type of connection established. for
Outgoing Calls, One Would Want To Enable Result Codes But Not
For Incoming Calls. if Codes Are Enabled (Via Atq0), The Modem Will Send Strings (if ATV1 And ATX4 SET)
"Ringing", "Connected" etc. To the local dte. The Getty Will Think
Some One is trying to login. it will send password prompt. Trouble
Again. Telebit and other Intelligent Modems HAS Atq2 Setting
Which Says "Reports Codes Only When Calling Out." For others,
You will need to disable it (atq1) and enable when Calling Out.
The dsr setting can be becom. Ideally, modem shouth
Raise DSR Only When CD is Detected and Modem Raises CTS. Computer,
Such as the Vax, Wait 30 Seconds After The Modem Raises DSR. IF
CD is not on by That Time, The Computer Will DROP DTR CAUSING THE
Modem to reset. The dsr shouth be set to be raised only when
Carrier Has Been Detected. The Hayes Setting IS AT & S1.
The DCD Setting SHOULD BE Such That Reflects The True Nature of
The Carrier. The CD Can Be Forced On At All Times (AT & C0). this
IS not good. set it to at & c1.
MOST MODEMS CAN RELOAD SAVED SETTINGS from Non-Volatile Memory
On A DTR Transition. this is useful for resetting the modem
WHEN a Call Drops. Uses Effect.
For Dial IN, THUS, SET AT E0 Q1 & C1 & D3 & S1 & W. The & W Stores The
Settings in membory. They will be reloaded Due To & D3.
Subject: 1.610: Does AIX Support COMPRESSED SLIP (CSLIP)?
No. That Means No vj compression Either :) See PPP in Section 5.07
If You Want More Than Standard SLIP.
Subject: 1.611: How do I setup anonymous ftp on my aix system?
(Stolen from Peter Klee
Have a look at '/usr/lpp/tcpip/samples/anon.ftp'. IT IS A shell script
And Will Set Up A Anonymous FTP Site On Your Local RS / 6000. Note: Theftpd That Comes with Aix Does Not Support The Display Messages Every
Time a User Changes A Directory or Even.
Subject: 1.612: Talk, getting notification.
If you are not getting notification (this someone wants to talk to
You), Use (swcons `Tty` && Mesg Y) in One Window.
There Are Many Variations of 'Talk' and Finding Compatible Versions
For Multiple Operating Systems Can Be Tricky.
Subject: 1.613: Disabling Software Flow Control; USING RTS / CTS.
Different Versions of Aix 3.2.5 Respond Differently To Attempts To
Enable Flow Control (RTS / CTS Signals). This section is an attempt to
Compile a list of diffrest approaches.
The Most Straight Forward IS:
ChDEV -L TTYXX -A RTS = YES
[NOTE: IX40410 for Aix 3.2.5 SHOULD GIVE you this functionality.
PTF U426113 and numerous Other Superceding PTFS SHOULD Provide this.]
IF Carrier Signal Is High (ITS Connected) You Can Try
Stty Add RTS
THERE IS Also a Program That I First Saw on The 800-IBM-4FAX Number,
Also found in info this will recs. Note. Note
That this code ignores the return code from ioctl (Which on My Machine
IS <0 :)
Subject: 1.614: NIS Security
Ole.h.nielsen@fysik.dtu.dk (Ole Holm Nielsen)
Summary: AIX 3.2.4 and Above Includes Support for A More Secure Setup
Of the ypserv nis daemon. You can prevent Any Random Host On The
Entire Internet from Reading your NIS MAPS, AS Possible with the
DEFAULT AIX SETUP.
The details:
----------------
After Starting The Ypserv Daemon, I Noticed in The Syslog The Following Line:
Jan 17 12:01:18 Zeise syslog: / usr / etc / ypserv: no / var / yp / securenets file
This Indicates That Ypserv Is Looking for The Mentioned ConfigurationFile, But Did Not Find It, And Hence Will Deliver The NIS Maps To
Anyone on the net who guess the nis domainname. I installed the
/ VAR / YP / Securenets File and Restarted Ypserv, And It Works! Any
Illegal Attempt to Read Nis Maps Will Result In The Following Getting
Logged to Syslog (Example):
Jan 18 13:37:27 Zeise Syslog: Ypserv: Access Denied for 129.142.6.79
How to enable this NIS Security Option:
Install The / VAR / YP / Securenets File, for Example:
# / VAR / YP / Securenets File
#
# The Format of this File is one of more lines of
# Netmask NetAddr
# Both Netmask and Netaddr Must Be dotted quads.
#
# Note That for a Machine with Two Ethernet Interfaces (i.e. a Gateway
#MACHINE), The IP Addresses of Both Have To BE IN / VAR / YP / Securenets.
#
# for example:
# 255.255.255.0 128.185.124.00
# Loopback interface
255.255.255.255 127.0.0.1
UNCOMMENTING THE LINE Would LIMIT Access To Hosts on The
128.185.124. * Net, ONLY. The loopback interface must be incruded, AS
SHOWN ABOVE.
To log violations, have a /etc/syslog.conf File Containing The Proper
Events. we use this line:
* .err; kern.debug; auth.notice; user.none / var / adm / message
Cavet Emptor: this Works for US, And You Will Have to Verify It At
Your Own Installation. Don't Complain To US IF You Have Troubles.
I do not know what PTF level Our Aix 3.2.4 is at. Our Ypserv daemon
Looks like this:
Zeise> strings / usr / limited z n | | |
@ (#) 16
1.12 COM / CMD / USER.ETC / YP / YPSERV.C, CMDNFS, NFS325, 9334325A 5/4/93 19:44:41
If Your Aix Doesn't Have Securenets Support, Ask Your Support Center
For the PTF Which Includeds apar ix32328. That Seems To Have Includedthe SecureNeets Support.
Subject: 1.615: why can't non-anonymous users login using wu-ftp?
From:
SWCXT@boco.co.gov (Shane Castle)
You Must Create A File Named / etc / shells (this is the real / etc not a
Subdirectory of Your false root, That Contains All The shells That
Are Defined On Your System. get the list from
/etc/security/login.cfg. Also, IF Having Propr Group Authentication
Is Important to you, Apply The Following Patch:
--- ftpd.c.dist WED APR 13 15:17:18 1994
ftpd.c tue jan 17 13:29:58 1995
@@ -1153, 7 1153, 13 @@
SetGroups (NULL, NULL);
IF (setpriv_set | priv_inherited | priv_effective | priv_bequeath,
& priv, sizeof (priv_t)) <0 ||
- setuidx (id_real | id_effective, (uid_t) pw-> pw_uid) <0 ||
InitGroups (pw-> pw_name, (GID_T) PW-> PW_GID) <0 ||
Setgidx (id_real | id_effective, (gid_t) PW-> PW_GID) <0 ||
STEGID ((GID_T) PW-> PW_GID) <0) {
Reply (550, "Can't set GID (AIX3).");
GOTO BAD;
}
IF (setuidx (id_real | id_effective, (uid_t) pw-> pw_uid) <0 ||
SeteUID ((UID_T) PW-> PW_UID) <0) {
Reply (550, "can't set UID (AIX3).");
Goto Bad;
Subject: 1.616: NIS Users Can't login, Do I NEED '*' IN / ETC / Passwd?
From:
Ohnielse@fysik.dtu.dk (Ole Holm Nielsen)
Aparently at Least One Version of Aix InfoExplorer Suggests
Administrators Use " : *: 0: 0 :::" as the last entry in the / etc / passwd
File of Nis Clients for Security Reasons. If The Configuration SMIT
IS DONE Using Smit IT Will Actually Append " :: 0: 0 :::" Which Works andDoes Not Compromise Security. Using The '*' In The Passwd Field
Actaully Prevents NIS Uses from logging in.
" :: 0: 0 :::" SHOULD NOT ALOW you to login as user " " and welhout a
Password Even NIS Is Disabled, But It Never Hurts To Double
CHECK.
Subject: 1.617: HP Jetdirect Cards and Virtual Printers? MkvirPRT Problems?
(Stolen from Many)
Since The Release of Aix 3.2.5 Adding a Queue for Jetdirect Cards IS AS
Easy As Creating a Virtual Printer Using "Smit Mkvirprt" or MKVIRPRT.
If the command hangs make you are useless an HFT, AIXTERM OR VT100
Terminal. The Entire Procedure IS Available from the IBM Fax
"Information line" (800 IBM-4-Fax).
From: Mark Bergman <
Mark.bergman@syseca.co.uk>
Smit Complains That Some Required Software Is Not Present on The System.
IT Turns Out That Software, "Printers.hpjetdirect.attach (4.1.3.0)"
IS on the installation CD.
However, There is some bugs, whereby the software may activually
Be already installed, but the system cannot see it it it it .: maybe the bug
Is That The Software Is Actually Not Installed, But The System in One. ISTALLY NOT OF INE
Place Thinks It is! - I'm not sure). Therefore, use smit to look at
Installed Software ("Software Installation and Maintenance", "MAINTAIN
Installed Software "," List Installed Software "and Look At All Software,
THEN SEARCH THROUGH for "Jet". if it Finds it (I.E. IT Thinks That IT
Is Installed) - You Must Remove It (Under Smit's "Maintain Installed
Software "Level), and the reinstall from the cd!
Subject: 1.618: How Can I HACK LIBC.A TO ALTER HOW HOSTNAMES Are Resolved? From: <
mlarsen@ptdcs2.intel.com> "L. Mark Larsen"
[
Editors NOTE: The Implications of Corrupting Libc.A Should Not Be
Understated. While Recovering from a Corrupt Libc.a Should Be A
Matter of Booting from Floppy I WIOLDN '的
Supervisor or users to support :)
Before you attempt this, you might want to read 2.07 first for
Advice on recovergeing from a destroyed or corrupted libc.a.a.
Remember: Backups Are A Very Good Idea.
ENOUGH of the weak kneed quiver ...
]
Nate Itkin (a colleague) Is The Individual Who Did The Initial Work.
I Suspect He Would Rather Not Be Troubled with Any Questions You May
Have in this area and i can probably answer theme just as easily. The
Motivation for this Was To Use DNS for MX Records (WE Are Using IDA
SENDMAIL) But Nis for MOST HOSTNAME LOOKUPS.
Secondly, Warnings: IBM Has Not Given Any Sort of Stamp of Approval On What
We Have Done (THOUGH THEY APPEAR To Have Integrated Resolv Into Aix 4 Based
ON Some Release Notes I SAW). While We Have Been Using It SuccessFully for
About One Year And Have Seen No Problems, We can't and Won't promise the same
For you. This Procedure Plays Around with Libc.a Which, As you probably Know,
Is An Xcoff Shared Library Under Aix and Hence A Critical Part of The Running
System. You assume all the risk if you try to install this. all the usual
DiscLaimers About Liability, ETC. Apply - There Is No Warranty Associated with
Any of this.
Furthermore, Know That Any Ptf You Subsequently Install That Updates / Replace
Libc.a Implies That You Have to Execute Most of these Procedures Again.
THE DETAILS On How To Use Resolv Under Aix 3 (It's Only Tested Under 3.2.5 But Should Work for All Point Releases), Have Been Moved To
Section 8.09.
Subject: 1.619: What modem settings do I need?
Atq2 - Result Codes in Originate ONLY
AT & C1 - CD FOLLOWS State of Carrier
AT & D2 - HANGUP ON DTR DROP
Subject: 1.620: NIS SLAVE SERVER CONFIG WITH MASTER ON DIFFERENT SUBNET?
From:
msidler@metronet.com (Mike Sidler)
Assuming AIX 3.2.5, The Master Server Up and Running and The Hosts File
Has The master name defined. on slave do:
1) DomainName
2) Startsrv -s Ypserv
3) Startsrv -s Ypbind (YpWhich Should Return "Loopback")
4) (/ usr / sbin /) Ypset -d
(YPWHICHHOULD RETURN "
5) (/ usr / sbin /) Ypinit -s
6) PUT " :: 0: 0 :::" in / etc / passwd after last local login.
NOTE: InfoExplorer Has This Entries Incorrect in Some Versions.
7) Other CFG Files (Group, etc) May Need Configuring But this Will
Get Ypserv and YPBIND RUNNING ON The SLAVE LOOKING AT The Right Stuff.
Subject: 1.621: why does my 64 port thermostrator Loose Data and Drop the Queue?
[From:
as@mynet.no (arild sletvold)]
This Problem Has Been Associated with Upgrading Machines TO 3.2.5.
Try Changing The Values for the "Transmit Buffer Count" Parameter in
The Printer / Plotter Setup in Smit. You NEED TO EXPERITIN THIS
Parameter, To See Which Value That Makes The Printer Print As Fast AS
Possible. if The value is to high, the printers will loose some of
The data, and the queue will be disabled. if the value is to ing,
The Printers Will Print Very Slowly.
Subject: 1.622: Netscape FastTrack Server Won't Install on Aix 3.2.5 OR 4.1.From: Cameron Ferstat <
CFerstat@Austin.ibm.com>
Before Installing FastTrack on An Aix 3.2.5 or 4.1 System, You Must
First Install The Aix Shared Library Hookable Symbols / 6000 Version
1.1.5.0, Reference RPQ No. P91153. (NOTE: this Software Should * Not *
Be installed on an Aix 4.2 System!)
IF you try to install fasttrack on an Aix 3.2.5 or 4.1 System, Without
First Installing The Hookable Symbols Prpq, You Will Get The Following
Error:
> ./ns-setup
0509-037 System Error - Error Data IS: ./ns-setup
0509-022 Cannot LOAD LIBRARY LIBSVLD.A [shr.o].
0509-026 System Error: a file or directory in the path name does not exist.
You can Download The Installp Image by Anonymous FTP from FROM
<
ftp://ftp.software.ibm.com/aix/Products/netscape/tools/slhs.rte.inst_image>.
There is also an associated ready .slhs file in trata directory.
Subject: 1.623: How can I Share Files / Printers with Windows 95?
The Freeware Solution IS Samba, Available from <
http://www-frec.bull.com/>.
Commercial Solutions Include Fusion95 from Performance Technology Technology
<
http://www.perftech.com/> And Syntax <
http://www.syntax.com/>.
Subject: 1.624: Printing from Aix To Winnt / 95 / 3.1
From: Charles J. Fisher <
Charles_fisher@bigfoot.com>
1. On Your Windows System, Share The Printer. Assuming That You Are
Running NT, Make A User "root" with some password.
2. Get the Samba Distribution from
http://www.samba.org
If you have a c compiler, get the source and compile.
If you don't have a c compiler, get a binary distribution for AIX.
3. Install Samba On Aix Under / USR / local / Samba. Specifically, Make Sure
That / usr / local / samba / bin / smbclient is installed with execute Rightsfor Everyone.
4. You Must Also Install A Samba Configuration File Under
/usr/local/samba/lib/smb.conf
IF you intend to use your aix as a file server for Windows Clients,
You Should Modify Smb.conf to Accomplish this (See the Samba
Documentation.
If You Will Be Printing Only, Just Use The Sample Smb.conf.
5. make the directory / usr / local / samba / lib / printers
6. In That Directory, Install The Following Shell Script AS
File "WinPrint":
#! / bin / sh
# This is a modification of the samba provided smbprint script
# Changed to work under aix the backend for a queue. it does
# NOT READ a config file.
#
# Variables Below Define The Server and Service. They Are
# THE Content of the .config File when Printing from
# / etc / printcap.
#
Server = "WinServer"
Service = "Winprinter"
User = "root"
Password = "root"
#
# Debugging log file, change to / dev / null if you like.
#
# logfile = / tmp / $ {user} -print.log
#
# Some debugging help, change the >> to> if you want to save space.
#
#echo "Server $ Server, Service $ Service" >> $ logfile
#cat $ 1 | / usr / local / samba / bin / smbclient "$ server // $ service"
$ Password /
# -N -p -c 'print -' >> $ logfile
(
# Note You May wish to add the line `echo translate 'if you want automatic
# Cr / lf translation athenprinting.
echo translate
Echo "Print -"
Cat $ *
) | / usr / local / samba / bin / smbclient "$ server // $ service" $ password /
-U "$ us" -n -p> / dev / null
7. The Above File Assumes That You are use // WinServer / Winprinter
As The Printer Share, And That The User IS "root" and the passwordis "root". if this is not the case, modify the shell variable
Declarations.
8. Mark The File with Execute Permissions with "chmod 755 winprint"
9. Test the script with the command: "./winprint / etc / passwd"
IF everything is Ok, Your Password File Should Be Spooled To Your
Windows printer.
If IT Doesn't Work, Remove The "> / dev / null" from the last line of
The Script and Run It. Examine The Output of SmbClient for Clues.
CLUE # 1: The Windows Printer Server Is on The Other Side of a Router.
AIX is sending broadecast packets to find the windows machine,
Which The Router Will Not Forward. You Must Find The Windows
Server's IP Address and Specify It with the "-i" Parameter
To SmbClient, I.E. "-i 1.2.3.4". DHCP MAKES THIS SITUATION
Even more complex.
Clue # 2: You Username or Password Is Wrong. SMBCLIENT WILL TELL YOU
About this if you free its output from> / dev / null.
Clue # 3: You might be violating shell quoting rules if you us
Special Characters in The Server or Share Name, Password,
Etc. don't use $, ", ', etc., or escape the prot.
A Password of "; RM-RF /" Could BE Catastrophic.
10. Once The Script Can Print Files, IT Must Be Defined As a Printer in
THE / ETC / QCONFIG FILE. Add the folowing lines to the end of your
/ etc / qconfig:
WinPrint:
Device = dwinprint
Up = TRUE
Discipline = SJN
DwinPrint:
Backend = / usr / local / samba / lib / printers / WinPrint
11. Test The Printer with The Following Command:
"LP-D WinPrint / etc / passwd"
Your Password File Should Be Printed Again.
12. You Might Examine The Queue with The Command "LPQ -P WinPrint" or "lpstat -t"
Subject: 1.625: How do I get nfs mounting with linux to work?
Linux by Default Requires Any NFS Mount To Use A So Called Reserved Port
Below 1024 And Aix 4.3 Does by Default Use Ports Above 1024. You CAN Use
The Nfso Command To Restrict Aix To The Reserved Port Range As Follows:
NFSO -O NFS_USE_RESERVED_PORTS = 1
Subject: 1.626: Telnet Takes a 45 Seconds to Produce a Prompt.
THIS in Nearly All Cases A DNS Configuration Problem, The Aix Machine
Can not resolve the ip address of the node initiating the telnet
Connection. You can check the dns reverse mapping by using the nslookup
Command on The IP Number In Question, this will probably Timeout AS
Well. make sure what the nameserver line in the /etc/resolv.conf file
Point to Valid Name Servers. Some Folks Have Reported That Putting The
Following in /etc/netsvc.conf can Help As Well (see Also Subject:
1.800):
Hosts = local, bind4
Getting a Correct DNS Server Configuration Is The Real Answer.
Subject: 1.627: Ethernet Frame Type - EN0 VS. ET0
From: Michael Wojcik <
Michael.wojcik@merant.com>
The "en" and "etc" prefixes for Aix Ethernet Network Interfaces
Indicate the Type of "framing" That Surrounds Higher-Level Protocol
Data on The Ethernet Medium ("Wire"). The Ethernet Frame Is The
Envelope That Surrounds IP Packets and Equivalent Messages in Other
Protocols.
There Are Two Kinds of Ethernet Framing In Common Use Today. The
"OFFICIAL" Standard Is IEEE 802.3 Framing, But TCP / IP Traffic ON
Ethernet IS Usually Carried in Dix (DIGITAl / Intel / Xerox) TYPE
II (USUALLY WRITTEN "DIX II" or Just "DIX") frames. OtHERTRANSPORT-INDEPENDENT Protocols, May Use 802.3. On Aix, SNA IS
Probably the MOST Common 802.3-framed protocol.
The Two Frame Types Can Coexist on The Wire.
Most TCP / IP Stacks Only Support DIX FRMING. AIX IS Unusual in
Supporting Both Dix and 802.3 framing for tcp / ip, but there's little
Point in Using 802.3 for TCP / IP. The EN0 Interface Uses Dix; The
ET0 Interface Uses 802.3 (AND So ON for EN1 / ET1, ETC., IF you have
Multiple NICS.
You CAN Configure TCP / IP for Both EN0 (DIX) And ET0 (802.3), in
Which case You're Creating a multiHomed host with only one Physical
NetWork Connection. Unless You Know You NEED TCP / IP OVER 802.3,
Don't Bother.
You don't need to configure TCP / IP on 802.3 to use other protocols
(EG. SNA) on 802.3.
Subject: 1.700: Free LVM Lecture Slides.
From:
Shieh@Austin.ibm.com
If you want free lvm documentation (lecTure notes) from the
Share Conference In San Franciso WHERE I Presented Last March
Just:
Mail -s "s_basics.ps" shieh@austin.ibm.com
Mail -s "s_limits.ps" shieh@Austin.ibm.com
Mail -s "s_lvm_extra.ps" shieh@austin.ibm.com
[Editor's Note: Jens-Uwe Mage Converted The Slides to PDF Format....
Are Available As <
http://www.han.de/~jum/aix/lvm.pdf>.]
Subject: 1.701: How do I shrink / usr?
From: mike@bria.uucp (michael stefanik) and richard Hasting
FOR AIX 3.1
-----------
1) Make a backup of / usr
Find / usr -print | Backup -ivf / dev / rmt0 (or apppriate device)
2) Shutdown to maintenance Mode
Shutdown -fm
3) Export lang = c
4) Remove The FileSystem and The Logical Volume
Ignore An Error About The "DSPMSG" Command Not Foundumount / USR
RMFS / USR
5) Make A New Logical Volume HD2 and Place It On Rootvg with Desired Size
Mklv -yhd2 -a'e 'rootvg nnn
WHERE NNN Is The Number of 4 Meg Partitions
6) CREATE A FileSystem ON / DEV / HD2
CRFS -VJFS -DHD2 -M '/ usr'-get '-p'rw'
7) Mount The New / USR FileSystem and Check IT
/ ETC / MOUNT / USR
DF -V
8) RESTORE from the Tape; System Won't reboot Otherwise
Restore -XVF / DEV / RMT0
9) Sync and reboot the system; you now have a sales / usr filesystem
FOR AIX 3.2
-----------
0) Experiences Posted to Comp.unix.Aix Lead Me To Suggest That
Many Administrators Find The Following Piece of Information
Useful after completion this procedure. I Thought some of you
Might like to read it before getting yourself Into this
PrediCament.
Call 1-800-IBM-4Fax and Request Document 2503 Dated 1/26/94.
Title is "How to Recover if All Files Are Owned by root after
RESTORATION from a mksysb tape.
1) Remove Any Unneeded Files from / usr.
2) Make Sure All FileSystems in The Root Volume Group Are Mounted. IF
Not, They Will NOT BE INCLUDED IN The Re-Installed System.
3) TYPE MKSZFILE. THIS WILL CREATE /.FS.SIZE THAT Contains a List of
The Active FileSystems in The Root Volume Group That Will Be
INCLUDEDIN The Installation Procedure.
4) edit .fs.size. Change the size of / usr to what you want.
Example: this .fs.size file shows / usr to be 40MB.
Rootvg 4 HD2 / USR 10 40 JFS
The 10 is The Number of Physical Partitions for the FileSystem and
The 40 IS 40 MB. Most Systems Have a Physical Partition Size of 4 MB.
Therefore, The Second Number (40) Will Always Be 4 Times The
Previous Number (10). Note, However, That a Model 320 with a 120 MBDRIVE WILL HAVE A Physical Partition Size Of Only 2 MB, And The
Total MB Is Twice The Number of Physical Partitions. THE FIRST
Number (4) in the .fs.size file represents the PP size.
IF you want to reduce the size of / usr from 40 mb to 32 MB, Edit the
/ usr Entry TO:
Rootvg 4 HD2 / USR 8 32 JFS
Important: make sure that you do not enter a value Which is less
Than the size of the filesystem required to contact theurrent
Data. Doing So Will Cause The Re-Installation Procedure To Fail.
5) ChDEV -L RMT0 -A Block = 512 -T
6) Unmount All FileSystems That Are Not in The Root Volume Group.
7) Varyoff All User-Defined Volume Groups, IF ANY
Varyoffvg vgname
8) Export the user-defined Volume Groups, IF ANY
Exportvg Vgname
9) with a Tape in Tape Drive, Type
MKSYSB / DEV / RMT0
This Will Do a Complete System Backup, Which Will Include
Information (in the .fs.size file) for the installation procedure
On How Large The FileSystems Are to Be Created.
10) FOLLOW THE INSTRUCTIONS in The Installation Kit Under "How to TO
Install and Perform Maintenance from Diskettes (Reportedly now "(REPORTEDLY NOW
Called "BOS Installation from a system backup") Using the
Diskettes and Tape That you created in the previous steps.
[preware 325: do not select the option "Reinstall Aix with
Current System Settings ". INSTEAD USE" install AIX with CURRENT
System Settings "for the logical volume size change" to take off.]
[W / AIX 325: SELECT "install from a mksysb image"]
11) WHEN The Installation IS Complete, You May Then IMPORT ANY
User-defined Volume Groups.
Importvg -y vgname pvname
WHERE "Vgname" is the name of the volume group, and "pvname" isthe name of any one of the physical volume in the volume group.
12) Varyon Your User-Defined Volume Groups
Varyonvg vgname
The Reduction of the FileSystems is now Complete.
Commercial Option
-----------------
There Are Also Commercial Tools Availible To Help you do this more
Conviently. I know of one vendor That Can Be Reached At
Info@compunix.com
Subject: 1.702: How do i make a filesystem larger Than 2GB?
AIX 3.2.5 and PreceEDing Versions Are Limited to 2 Gigabytes Per
FileSystem.
With Aix 4.1 IBM Allows FileSystems Up to 64GB (Reference:
Individual Files Are Still Limited to 2GB. AIX 4.2 Allows 128GB
FileSystems and 64 GB Files. (See Also Question 1.706.)
IF you are havning trouble creating a file greater tour 1mb IT Maybe
Because That Is The Default Limit for your account, see 'smit users'
OR / ETC / Security / LIMIT.
Subject: 1.703: CHLV WARNING. IS THE FIRST 4K OF A LV SAFE?
The first 4k of a raw lv area used to store control block.
Applications That Write to the Raw Disk Can Overwrite this section
Common Applications That Do this is is more oracle and sybase. Commands
That Call Getlvcb Will Generate A Warning But successd (Since The
Control Block EXISTS IN ODM. DON 'T Run Synclvodm Unless you really
Want To Erase the first 4k and replace it with the info from the odm.
Shieh@Austin.ibm.com (Johnny Shieh) HAS Kindly Provided The Following
Explanation:
The Logical Volume Control Block (LVCB) Is The First 512
Bytes of a logical volume. this area Holds Important
Information Such as The Creation Date of The Logical Volume,
Information About Mirrored Copies, and Possible Mount Points
IN a Journaled FileSystem. Certain LVM Commands Are Requiredto Update The LVCB, AS Part of Completeness Algorithms in
LVM. The old lvcb area is first read and analyzed to see
IT IS A Valid Lvcb. if The Information is Verified As Valid
LVCB Information, THE LVCB IS Updated. if The LVCB IS Updated.
Information IS Not Valid, THEN The LVCB Update Is Not
Performed and the user is given the Warning message:
Warning, Cannot Write LV Control Block Data
Most of the Time, this is a result of database programs
Accessing the Raw Logical Volumes (and thiness "
Journaled FileSystem) AS Storage Media. When this Occurs, THE
Information for the Database IS Literally Written over The LVCB.
Althought this May Seem Fatal, IT IS Not The Case. Once
LVCB HAS BEEN OVERWRITTEN, THE USER CAN STILL:
1) Extend A Logical Volume
2) CREATE MIRRORED COPIES OF A LOGICAL VOLUME
3) Remove The Logical Volume
4) CREATE A Journaled FileSystem with Which to Mount
The Logical Volume (Note That this Will Destroy Any
Data Sitting in The LVCB Area)
However, there is a limited by this deletion of the
LVCB. The Logical Volumes with deleted Lvcb's Face Possible,
INCOMPLETE IMPORTATION INTO OTHER AIX Systems. During an
"Importvg", The LVM Command Will Scan The Lvcb's of All Defined
Logical Volumes in a Volume Group for Information Concerning Toing The INFORMATION
Logical Volumes. surprisingly, if the lvcb is deleted, the
Imported Volume Group Will Still Define The Logical Volume To
The New Aix System Which IS Accessing this Volume Group, And
The User Can Still Access The Raw Logical Volume. However, Any
Journalized FileSystem Information IS Lost and The Logical Volume
And ITS Associated Mount Point Won't Be Imported Into The New Aixysystem. The User Must Create New Mount Points and The Availability
Of Previous Data Stored in The FileSystem Is Not Assured. Also, DURING
This Import of a Logical Volume with An ERSED LVCB, Some Non-JFS
Information Concerning The Logical Volume, Which is Displayed with
The "LSLV" Command, Cannot Be found. When this Occurs, The System USES
Default Logical Volume Information To Populate The Logical Volume's
ODM Information. Thus, Some Output from The "LSLV" Will Be Inconsistent
With the real logical volume. if Logical Volume Copies Still EXIST ON
The Original Disks, this Information Will Not Be Correctly Reflected in
The ODM Database. The User Should Use "Rmlvcopy" and "mklvcopy" TO
Rebuild Any Logical Volume Copies and synchronize the odm. Finally,
With an erased lvcb, the output from the "lslv" Command Might BE
Misleading or unreliable.
Subject: 1.704: What's The limit on Physical Partitions Per Volume Group?
From: shieh@austin.ibm.com (johnny shieh)
1016 Physical Partitions Per Disk in a Volume Group:
In The Design of LVM, Each Logical Partition
Maps to one Physical Partition. And, Each Physical
Partition Maps to a Number of Disk Sectors. The Design
of Lvm Limits the Number of Physical Partitions That LVM
Can Track Per Disk in a Volume Group To 1016. In Most Cases,
NOT All the Possible 1016 Tracking Partitions Are Used by a disk.
The Default Size of Each Physical Partition During A
"MKVG" Command IS 4 MB, Which Implies That Individual
Disks Up to 4 GB Can Be Included Into a Volume Group.
IF a Disk Larger Than 4 GB IS Added to a Volume
Group (based on usage of the default 4 mb size forphysical partition) The Disk Addition Will Fail with a
WARNING Message That The Physical Partition Size Needs
To be increased. * There Are Two instances where this
Limitation Will Be Enforcesd. The first case isew
User Tries To Use "MKVG" to create a Volume Group Where
The Number of Physical Partitions on One of the Disks in One ONE
The Volume Group Would Exceed 1016. in this case, the
User Must Pick from The Available Physical Partition Ranges of:
1, 2, (4), 8, 16, 32, 64, 128, 256
Megabytes and use the "-s" option to "mkvg". The second
Case Is Where The Disk Which Violates THE 1016 Limitation
Is attempting to join a pre-esting volume group with IS
The "extendvg" Command. The User Can Either Recreate T
Volume Group with a larger Physical Partition Size (Which
WILL ALLOW THE New Disk to work with the 1016 limited
Or the user can create a standardAlone Volume Group (Consisting
of a larger physical partization size) for the new disk.
In Aix 4.1 and 3.2.5, if The Install Code Detects
That The Rootvg Drive Is Larger Than 4 GB, IT Will Change
The "mkvg -s" Value Until The Entire Disk Capacity Can Be
Mapped to the available 1016 tracks. ** this install change
Also Implies That All Other Disks Added to Rootvg, Regardless
Of size, Will Also Be Defined At this New Physical Partitions size.brid.
For raid systems, the / dev / hdiskx name buy by LVM in Aix May
Really Consist of Many Non-4GB Disks. in this case, the 1016
Limitation Still EXISTS. LVM IS unaaware of the size of the
Individual Disks That May Really Make Up / DEV / HDiskx. LVM Bases
THE 1016 Limitation On The Aix Recognized Size of / dev / hdiskx,
And NOT The Real Independent Physical Disks That Make Up /Dev/HDiskx.The Questions asked of this Issue Are:
1) What are the symptoms of this problem?
2) How Safe Is My Data? What if I NEVER USE MIRRORING OR MIGRATEPV?
3) Can I Move this Volume Group Between RS / 6000 Systems and Versions
Of AIX?
Here is the answer
A) What is the SYMPTOMS OF this qu.
The 1016 Vgsa IS Used to TRACK The "Staleness of Mirro".
IF you are in violation of 1016, you may Possibly Get a false
Report of a Non-mirrored Logical Volume Being "Stale" (Which
Is an oxymoron) or you get a false in Indication That ONE
The your mirror copies has gone stale. Next, MigratePv May
Fail Because Migratepv Briefly Uses Mirroring to Move A Logical
Volume from One Disk to another. if The Target Logical
Partition is incorrectly considered "stale", Then Ten the migratepv
Cannot Remove The Source Logical Partition and The Migratepv
Command Will Fail In The Middle of Migration.
B) How Safe Is My Data? What if I NEVER USE MIRRORING OR MIGRATEPV?
THE DATA IS SAFE (in Your Mind) as the day before you find
Out About 1016 ViOLATIONS. The Only Case Where Data May BE
Lost is if one is mirroring a logical volume and all copies go
Bad at The Same Time and LVM ISN't Aware of It Because The
Copies That Go Bad Are Beyond The 1016 TRACKING RANGE. HOWEVER,
In this case, you would bee WERE WITHINI
1016 Range. If you never mirror or use migratepv, thr
Issue shouldn't Concern You. But, IT Might Be unwise to State
You'll Never Use Either of Those Options.
C) Can I Move this Volume Group Between RS / 6000 Systems and Versions
Of AIX?
YES you can. The Enforcement of this 1016 limit is onLyDuring mkvg and extendvg. The "safenes" of the data on the
Volume Group on Aix 3.2 is The Same As IT IS ON AIX 4.1.
* This bug was fixed in apar ix48926. Current AIX 3.2.5 and
4.1.1, Which Do Not Have this FIX ON Applied, Will Allow THE
Creation of Volume Groups with more Than 1016 Partitions. The
Implication of this bug allowing more Than 1016 Physical
Partitions is that the user may access all portions of the logical
Volume. However During Disk Mirroring, The Status of Partitions
Beyond The 1016 Limit Will NOT BE TRACKED CORRECTLY. IF MIRRORS
Beyond The 1016 Range Become "Stale", LVM WILL NOT BE AWARE OF
THEIR CONDITION AND DATA Consistency May Become An Issue For
Those Partitions. Additional, The "MigratePv" Command Creates
Mirrors and deletes the as a mathod for moving logical volumes
Around Withnin / Between Disks. if The 1016 Limit is Violated,
THEN THE "MIGRATEPV" Command May Not Behave Correctly.
The User Should Pick Up Apar ix51754, Which Clarifier THE ERROR
Message When this condition is detected. additionally, the user
Can read the non-ptf documentation apar ix50874 Which is a company
TO ix48926 and ix51754.
** This Bug Was Fixed for Aix 3.2.5 Rootvg Install In Apars
IX46862 and ix46863. This Bug Does Not Exist in Aix 4.1.1.
Subject: 1.705: why am i having trouble address, one, to my vg?
From: shieh@austin.ibm.com (johnny shieh)
In Some Instances, The User Will Experience A Problem Adding
A New Disk to an EXITING VOLUME GROUP OR IN The CREATION OF
A New Volume Group. The Warning Message Provided by LVM WILL
BE:
Not Enough Descriptor Space Left in this Volume Group.
Either Try Adding a Smaller Pv or Use Another Volume Group.on Every Disk in a Volume Group, There Exists An Area Called The
Volume Group Descriptor Area (VGDA). This Space is what allows
The User to Take a Volume Group To Another Aix System and
"Importvg" That Volume Group INTO THAT AIX System. The VGDA
Contains the names of disks what make up the volume group, Their
Physical Sizes, Partition Mapping, Logical Volumes That EXIST I
The Volume Group, AND Other Pertinent Lvm Management Information.
When the user create a volume group, The "mkvg" Command
Defaults to allowing the new volume group to have a maximum
Of 32 Disks in a Volume Group. However, As Bigger Disks Have
Become More Prevalent, THIS 32 Disk Limit is Usually Not
Achieved Because The Space in The VGDA IS Used Up Faster, AS
IT Accounts for the capacity on the bigger disks. this
Maximum Vgda Space, for 32 Disks, IS A Fixed Size Which IS
Part of the lvm design. Large Disks Require More Management
Mapping Space in the VGDA, Which Causes The Number And Size
Of available disks to be added to the existing volume group
To shrink. When a disk is added to a volume group, not only ONLY
Does The New Disk Get a Copy of The Updated VGDA, But All
EXISTING DRIVES in The Volume Group Must Be Able To Accept
The New, Updated VGDA.
The Exception to this Description of the maximum VGDA IS
Rootvg. in Order to Provide Aix Uses More Free Space, WHEN
Rootvg IS Created, "MKVG" Does Not Use the maximum limited
32 Disks That Are ALOWED INTO A VOLUME GROUP. INSTEAD IN
AIX 3.2, The Number of Disks Picked In The Install Menu of DISKED INSTALL
AIX is buy as the reference number by "mkvg -d" during the
Creation of rootvg. for Aix 4.1, this "-d" Number IS 7 forone Disk and one more for Each Additional Disk
Picked. I. You Pick Two Disks, The Number IS 8. You Pick
Three Disks, The Number IS 9, And So ..... THIS LIMIT DOES
NOT mean the user cannot add more disks to rootvg in the
Post-install phase. The Amount of Free Space Left in a VGDA,
And thus the number of size of the disks added to a Volume
Group, Depends on the size and number of disks already, SIZE AND NUMBER OF DISKS
Defined for a Volume Group. However, this Smaller Size
During rootvg code implies That the user will becomle to
Add Fewer Disks to Rootvg Than Compared to a non-rootvg
Volume group.
If the customer requires more vgda space in the rootvg, Then
THEY SHOULD USE "MKSYSB" and "migratepv" Commands to
Reconstruct and reorganize their rootvg (The Only Way To
Change the "-d" limited is recreation of the rootvg).
Note: It is always strongly recommented That Uses do not place
User Data ONTO Rootvg Disks. This Separation Provides An Extra
DEGREE OF SYSTEM Integrity.
Subject: 1.706: What Are The Limits ON A FILE, FileSystem?
There Are Other Limits But The COME UP MOST OFTEN. Logical Volumes
Do Not_Have_ To Contain Journaled File Systems and Therefore Can Be
Larger Than 2GB Even IN 3.2.5.
FILE JFS-FileSystem
3.2.5 2GB 2GB
4.1.x 2GB 64GB
4.2 64GB 128GB
While It * might * be Possible to create larger file systems, the limits
SHOWN Here Repesent Values That IBM HAS Supposedly Tested.
Subject: 1.707: HINTS for SEGATE 9 GB AND OTHER Disks Larger Than 4 GB?
[read 1.704]
Subject: 1.708: How do i fix volume group locked?
> From / usr / lpp / bos / readme (AIX 3.2.5) and 1.800.ibm.4fax # 2809
IF you get '0516-266 Publvodm: Volume Group Rootvg is Locked, Try Again'or Something Similar, You Can Use (Putlvodm -k `Getlvodm -v
Subject: 1.709: How do I Remove A Volume Group with no disks?
From: shieh@austin.ibm.com (johnny shieh)
This is a very common question about aix lvm and i thing
I Might Take Some Time To Explain What Is Going on. Within
A Volume Group Is The Volume Group Descriptor Area (VGDA) IS
IS Kinda a "Suitcase" of LVM Information. this is what allows
You to Pick Up Your Drives and Take THEM To Another Machine,
Importvg Them, and get filesystems automatically defined.
What happens is that when Importvg The Volume Group,
The RS / 6000 Goes Out And Reads The Vgda and Finds Out About
All The Logical Volumes and FileSystems That May EXIST on The
Volume Group. It Then Checks for Clshes (Name Conflicts, etc ..)
On Its Own Machine and Then, Here Is The Important Part, Populates
ITS OWN Database with Information About The New Volume Group and
ITS Associated Logical Volumes. in Cases of FileSystems, IT Will
Go Into the / etc / filesystems file and add the new filesisystem entries
That Came Along with The Imported Volume GROUP.
Okay, The Key Point Is That You'Ve Got This Independ Volume Group
That Has "docked" at the new rs / 6000. What Keeps the Two Tethered
To Each Other Is The Varyonvg Command. When this is started on the
Volume Group, A Software Link is created Where you can't Separate THE
Volume Group from the Aix Operating System Unless The Volume Group
Is no longer seen as active by the system. in Very Cases, A
Situation Can Occur Where The Vgda Thinks That Somene Has IT (The
Volume Group) ActiVated, But The Operating System Doesn't Think It Has Thevolume Group Opened Up. This Is Pretty Rare.
The Main Question I see IS "I've Taken Away The Disks, Buth How Do
I get rid of the volume group ". The Question Should Really Say,
"How do I get rid of the volume group information" Since That "
All you have on the system. You'Ve Got Possible Entries in
The / etc / filesystems and definitely entries in the odm. just
DO:
Exportvg
IT Does a Reverse Importvg, Except It Doesn't Go Off And Read
The vgda. it nukes anything relaty to the volume group in
The / etc / filesystems and odm. The only time this won't work is
If The System Detects That The Volume Group Is Varied on. Then,
IT Would Be Like Trying to Change Tires on a Moving Car, We Won't
Let you do it!
Some People Are Concerned That Doing An Exportvg Will Somehow Damage
The Volume Group and / or ITS VGDA. As I Said, All It Does IS Affect The
Information About The Volume Group on The RS / 6000 Box, Not On The Actual
Disk Platter Itself. thus, the volume group you exported is Safe To
Take to another system. The only time the vgda gets overwritten is for
You Create a New Volume on top of it.
The Second Most Offen Asked Question IS "How Do I Get Rid of A Disk
That is no longer really in the volume group? "
In this case, you don't want to do an exportvg. What you want to do
Is Tell The System You Want To Cut Out The Memory of The Old, Bad Disk
From the RS / 6000 and from the vgda of the volume group. You Simply
DO:
REDUCEVG -D -F
Or if the hdname can't be found:
REDUCEVG -D -F
BE CAREFUL with this Command. Unlike The Exportvg Command, Actions Donewith THIS Command Will Affect The VGDA Information on The Platter.
Hope this Clarifies Some Questions About Volume Groups.
Subject: 1.710: What Are The Theoritical Limits WITHIN THE LVM?
From: gerry fitzgerald <
G.fitzgerald@uk22p.bull.co.uk>
-------------------------------------
LVM LIMITS with IN AIX (My Perception)
-------------------------------------
The System May Have 1 To 255 Volumes Groups (VG's).
Each VG May Contain 1 to 32 Physical Volumes (PV's).
Each Pv May Contain Upto 1016 Physical Partitions (PP's).
Each PP May Have a size (Square of 2) from 1 to 256MB (1024MB for AIX 4.3).
Therefore, if You Can Get Hold of A 260,096 MB Disk (One Pv with 1016
X 256MB PPS), you can install 32 of these in a Single VG Giving you
8,323,072MB per vg. You May Have Up to 255 VG's in One Aix System So
You Could (in theory) Create The Maximum Addressable Aix Storage Area
Of 2,122,383,360 MB (2,072,640 GB or 2,024 Tb or approx. 2 Pb). THIS
Is Based on The Current Limitations Of Aix V4.1.
The Limits for File and FileSystem Sizes Are:
[Editor's Note: The Original Values in this Mail Appeared To
Be Slightly Wrong, I Have Corrected That To The Values As Per
My interpretation of the aix manual.]
AIX V3.2 Max FileSystem Size: 2,147,483,647 bytes (2 GB)
Max Single File Size: 2,147,483,647 bytes (2 GB)
AIX V4.1 Max FileSystem Size: 1,099,511,627,776 bytes (1 TB)
Max Single File Size: 2,147,483,647 bytes (2 GB)
AIX V4.2 Max FileSystem Size: 1,099,511,627,776 bytes (1 TB)
Max Single File Size: 68, 589, 453, 312 (~ 64 GB)
AIX V4.3 Max FileSystem Size: 1,099,511,627,776 bytes (1 TB)
Max Single File Size: 68,589,453,312 (~ 64 gb) The 1TB Maximum File System Size Is Given by The Rule That Each
Fragment Must Be Addressable by AN 28 Bit Number, with the largest
Fragment size being 4096 bytes (4096 * 2 ^ 28).
Subject: 1.800: How do i control how Hostnames Are Resolved?
From: <
Kraem@ibm.de> Frank Kraemer
Information from Aix 4.1.2 InfoExplorer:
The Default Order Can Be Overwritten By Creating The Configuration File,
/etc/netsvc.conf and specifying the desired ORDER. Both the default and
/etc/netsvc.conf can be overwritten with the Environment Variable,
NsORder. If Either the /etc/netsvc.conf file or Environment Variable,
NsORder Are Defined, Then At Least One Value Must Be Specified Along with
The Option.
EXAMPLES:
Echo hosts = local, nis, bind> /etc/netsvc.conf
NsORDER = local, bind; export nsorder
[Editor's NOTICE: AS OF AIX 4.3 you also have bind4 & bind8 (for ipv4 & ipv6)]
------------------------------
Subjet: 1.801: DTLOGIN IGNORES / ETC / PROFILE?
From: Trevor Bourget
Trevor@thomsoft.com)
Read the / usr / dt / bin / xsession script. You can add a file to the
/etc/dt/config/xsession.d and it will get Sourced as part of the
Startup. The Order IS: $ HOME / .DTPROFILE, /ETC/dt/config/xssion.d/*,
/usr/dt/config/xsession.d/* (Backwards, In My Opinion, But CDE IS A
Committee Result After ALL.
> From: ed ravin <
ERAVIN@panix.com>
If You Want Your Terminal Session to Automatically Read in
/ etc / profile and your .profile when the start up, you need to each
Invoke the with the "-ls" option (Which I Couldn't Figure Out How To
Do, Perhaps Someone else Can Elabo Up The Default X
Resources So That Thei Set:
* DTTERM * Loginshell: Trueyou Could Always Do this with the .xResources File in Your Own Account,
But That Wouldn't FIX Any Other Users in The System. To make this change
Globally:
CDE Configuration Files Are Kept IN / USR / DT / Config
Those Files Warn You Strenuously Not to Change Them, Since Aix Upgrades
Will Overwrite Them and Lose Your Changes. The Recommend That You Copy
The files to / etc / dt / config and change the the the the:
# CD / USR
# Find dt / config -print | CPIO -PDVUM / ETC
... (files get copied)
# CD / ETC / DT / Config / C
# echo "* DTTERM * Loginshell: true" >> sys.Resources
# cd ../en_us
# echo "* DTTERM * Loginshell: true" >> sys.Resources
From: Olaf Meeuwissen <
Olaf@imsl.shinshu-u.ac.jp>
THE PROBLEM IS IN / USR / DT / BIN / XSESSION. THIS Script Only Recognits
The Following Login Shells: SH, KSH AND CSH (AS of $ Revision: 1.12 $).
All Other Shells Are Considered Non-Standard.
THE FIX Is To Have Your Sys-Admin Add Any Other Login Shells in The
Right Places in The Script (TWICE IN THE "Start The Session" Part).
Look for "Case $ {shell ## * /} in" and add shells in the pattern.
Note That Script Will Be Overwritten Unconditionally by System
Updates :-( and, unlike mus other stuff in / usr / dt /, copying it to
/ etc / dt / does not work.
For Which Shells to Add, You May Want To:
$ grep shells /etc/security/login.cfg
Subject: 1.802: Where's the c compiler?
AS of AIX 4.1, The C Compiler Has Been "Unbundled." It's a Separate Product,
AND You Must Purchase a Separate license for it. IBM DOES OFFER FREE
Time Limited Trial Licenses if you want to "Try Before You Buy."
The GNU C Compiler Is Available from Various Sources. The Most Convenientis Probably
ftp://aixpdslib.seas.ucla.edu/>
Is Another Source.
Subject: 1.803: why doesn't netscape work?
See Question 1.515.
Subject: 1.900: SCSI-1 and SCSI-2 "Interoperability" Got you confused?
A. SCSI-1 Devices Are Supported on A SCSI-2 Adapter. This
Config Will Provide SCSI-1 Performance.
B. SCSI-2 Devices Aresu Supported on A SCSI-1 Adapter. This
Config Will Provide SCSI-1 Performance.
C. a Mix of SCSI-2 and SCSI-1 Devices Aresu Supported on A SCSI-1
ALL DEVICES WILL HAVE SCSI-1 Performance.
D. a Mix of SCSI-2 and SCSI-1 Devices Aresu Supported on A SCSI-2
Adapter. SCSI-2 Devices Will Have SCSI-2 Performance (10 MB / SEC)
AND SCSI-1 Devices Will Have SCSI-1 Performance (4-5 MB / sec).
Subject: 1.901: how to get your keyboard back instance unplugging it from the 6000
From: Mickey Coggins and Anne Serre and L. Mark Larsen
WHEN you unplug your keyboard from a Running System, and Plug It Back
IN, THE Key Mapping is Wrong. for Example, Keys Like Caps Lock and Ctrl
Don't work as designed.
Solution: Type At the Command Line
/ USR / LPP / DIAGNOSTICS / DA / DKBD
Your Screen Goes Black, You Hear a few beeps, and your keyboard is reset.
IT Works with any Environment, XWindows, HFT, NLS ...
For Models 220, 230 and M20, Use the Following Commands:
/ USR / LPP / DIAGNOSTICS / DA / DKBD
/ USR / LPP / DIAGNOSTICS / DA / DKBDSAL (for the 220)
After Running The Keyboard Diagnostics To Reset Keyboard Mappings, THE
Repeat rate is also reset to some slow space (11, accounting to the man
IF the user is in x, you need to open an hft window. do this
With "xopen / bin / csh". Once you have an HFT WINDOW, RUN "Chhwkbd -r30". [Editor's Note: by unpluging & plugging a keyboard / mouse on a live
System You May / Will Damage / Zap / Fry / Destroy The Motherboard]
Subject: 1.902: How do I set up PCSIM, The DOS Emulator?
[Editor's Note: this Product Does Not Exist in Aix 4.x.]
You Must Have A Bootable Dos Diskette To Install PCSIM. Either DOS 3.3,
4.X, OR 5.0 Will Work. IBM Do Not Officially Support DOS 5.0 for PCSIM
But I have no problems with it. Just don't try to be fancy with the umb
And Memory Manager Stuff.
With a bootable dos disk in The Drive, Do:
$ TOUCH / U / DOSDRIVE (this Is The Aix File for DOS Emulation)
$ PCSIM -ADiskette 3 -cdrive / u / dosDrive
You 10 now get an a prompt. Type:
A> fdisk
Create The Virtual C Drive of WhatVer Size You Choose. Make it Large
Enough for your needs since you cannot Enlarge it Later.
A> Format C: / S (To Format The Virtual C Drive)
Now exit from pcsim with escpcsim (ESC Key Followed by PCSIM).
Now Create a SimProf File. Following is A Starter:
Adiskette: 3
CDRIVE: / U / DOSDRIVE
LPT1: Name of Printer Queue
Refresh: 50
DMODE: V
Mouse: Com1
You Can Now Start Pcsim Anytime by Typing Pcsim. Make Sure No Floppies
Are in the drive. for further information, refer to publication
SC23-2452, Personal Computer Simulator / 6000 Guide and Reference.
Subject: 1.903: How do I Transfer Files Between Aix and DOS Disks?
In the aix package bos.dosutils Are Commands for Transferring FILES BETWEEN
Dos Diskettes and Aix. The Commands Aread, Doswrite, Dosdir, Dosdel,
And dosformat. Many Users Have Mentioned That The MTools Package from
Prep.Ai.mit.edu Is Better Than the Native Aix Programs.Subject: 1.904: Where is the crypt program?
The Crypt * Program * (as opposed to the crypt subroutine) HAS BEEN
Deleded to conform to u.s. law regarding export of missile,
Ammunitions, Nuclear and Cryptographic Technology.
Other Programs Such As PGP Are Available, But Their Use and / OR
Posseness May Be Subject to Local Laws and Regulation.
France is Such a place.
IF Anyone Has A Better Answer To this Question (Like Places Where Crypto
Devices Are Illegal / Severely Restricted, Feel Free To Contribute IT.
Subject: 1.905: How do i Play Audio CDS?
From:
Woan@Austin.ibm.com (Ronald S. Woan)
Get XMCD by anonymous ftp from ftp.x.org in / contrib / applications / xmcd /
ftp://ftp.x.org/contrib/applications/xmcd/> Subject: 1.906: How can I get the mouse back instance unplugging it? / USR / LPP / DIAGNOSTICS / DA / DMOUSEA [Editor's note: by unpluging & plugging a keyboard / mouse on a live System You May / Will Damage / Zap / Fry / Destroy The Motherboard] Subject: 1.907: Where can I get source code to the overrating SYSTEM BINARY XXXXX? AIX Source Code Is Not Generally Available. Two Other UNIX OS 'DO Make Their Source Available, Linux & Freebsd. Check < ftp://ftp.uu.net/systems/unix/BSD-SOURCES /> AND < ftp://ftp.uu.net/systems/unix/linux/> Subject: 1.908: What's the Difference Between The Power and PowerPC Architectures? Read The PowerPC FAQ AT < http://www.mot.com/sps/powerpc/library/ppc_faq/ppc_faq.html> Subject: 1.909: Will The BE DATE ROLLOVER PROBLEMS in the year 2000? From: Mbrown@austin.ibm.com (Mark Brown) IBM HAS A MAJOR CORPORATE-WIDE PUSH for * All * of ITS Software Products To Be "Safe" in this regard by the end of 1996. < http://www.software.ibm.com/year2000/paper.html> Is The General-Purpose URL for IBM. As far as aix is concerned, we had to fix three things in aixv4.1.4 (Some logging commands handled date range wrong) AS PTFS, But Other Than That, we are there. ... and we Handle the Leap Year Issue Correcly. Also. Subject: 1.910: How can I build an "installp format" file? Jim Abbey < Jim@systelecom.com> HAS a Tool Called "LPPBUILD". IT is now Available from "aiXpdslib.seas.ucla.edu" In Either of /pub/lppbuild/risc/3.2/src/lppbuild.1.0.tar.z /pub/lppbuild/risc/4.1/src/lppbuild.1.0.tar.z Both Are Identical and The Procedures Also Work On 4.2. Ciaran Diegnan < C. Diegnan@frec.bull.fr> HAS Built a Tool Called "mklpp". You Can Retrieve a copy (Along with Many Other Smit-installable freeware packages) from Subject: 1.911: Is there a generic scsi driver for AIX? From: Rogan Dawes < Rdaws@jhbelec.co.za> Yes. Matthew Jacob Mjacob@feral.com) HAS Written a Generic SCSI Driver FOR AIX 4.1. It can be found ftp://ftp.feral.com/pub/aix/gsc.tar.gz>. Subject: 1.912: Viruses Or Virus Scanning on Aix? From: MWW@microfocus.com (michael wojcik) FWIW, AIX Comes with a virus-scanning utility (/ usr / bin / virscan), Though Iirc The Original Version Had An Empty Signature File (in /usr/lib/security/scan/virsig.lst) and even the later populate Signature File Only Contains Pc Viruses. Quoth The Man Page, "AT THIS TIME [Virsig.lst] Contains No Known Aix Virus Signatures. Apparently We all to infer what there * wue * No Known Aix Virussignatures. I Note That My 4.2.1 AIX System Still Has The 1991 Signature File. Even a dos-only Virus List Could Potentially Be Useful ON A Unix File Server, Though. Provided, Of Course, That It Had A Recent Signature List (and preference "detection and similar Heuristics, Which Virscan Probably Does Not. And to be fair there is apenty of unix vulnerabilities, and evenu Viruses potentially among them. David Harley, Keeper of The Alt.comp.virus FAQ, MENTIONED SOME "LAB" Unix Viruses WHEN THIS Thread Appeared In October '87, and i recall a discussion of using Crypto Hashes To Validate Major System Commands on Some Unix Group NOT THAT Long Ago - Which is Essentially Virus-Scanning Technology, Though Not Necessarily for the Same Purpose It GeneSerally Serves ON PCS. That Said, Viruses Are Not The Problem for UNIX Systems That Are for PCS. Network Security, Guessable UserNames and Passwords, And The Like Should GeneSerally Be a higher priority. Subject: 1.913: How do I Determine The Clock Frequency of A RS / 6000 BY Software? From: Franz Pestenhofer < Franz.pestenhofer@debis.com> The answer seems to be "there is no way to find Out the clock frequency with a basce of software. [Editor's NOTICE: On Chrp Machines The IS Information on the open firmware] Subject: 1.914: How do I create a ramdisk? From: MarkBBS < Mark@grubbs.Austin.ibm.com> # mkramdisk size / dev / rramdiskxx # MKFS -V JFS / DEV / RAMDISKXX # mount -v jfs -o nointegrity / dev / ramdiskxx / whatver [Editor's NOTICE: this function is new in 4.3.3] [Editor's NOTICE: this function is unsupported] Subject: 1.915: Can i Run Linux on an rs / 6000? Some Distributions Can Be Installed On Some RS / 6000'S. The Available Cards. For more information see: http://www.rs6000.ibm.com/linux http://oss.software.ibm.com/developerWorks/opensource/linux/projects/p http://www.linuxppc.com http://www.linuxppc.org http://www.yellowdog Linux.com http://www.suse.com/products/susesoft/ppc http://www.debian.org SUBJECT: 2.00: C / C Contrary to Many People's Belief, The C Environment on The RS / 6000 IS NOT VERY SPECIAL. The C Compiler Has Quite a Number of Options That Can BE Used to Control How IT Works, Which "Dialect" of C it Compiles, HOW IT Interprets Certain Language Construction, etc. InfoExplorer IncludDes A Users guide and a reference manual. The Compiler Can Be Invoked with Either Xlc for Strict Ansi Mode and CC For RT Compatible Mode (I.E. IBM 6150 with AIX 2). The default option For Each Mode Are Set in the /etc/xlc.cfg file, and you can activally add Another Stanza and create a link to the / bin / xlc executable. The file /usr/lpp/xlc/bin/readme.xlc Has Information About The C Compiler, and the file / usr / lpp / bos / bsdport (AIX 3 Only) Contains USEful Information, In Particular for Users from a bsd background. The file /etc/xlc.cfg also shows the symbol _ibmr2 That Is Predefined, And therefore can be used for # ifdef'ing RS / 6000 Specific Code. Subject: 2.01: i Cannot Make Alloca Work A Famous Routine, in Particular In GNU Context, IS The Allocation Routine Alloca (). Alloca Allocates Memory in Such A Way That IT IS Automatically Free'd When The Block is exited. Most Implementations Does this by adjusting the stack pointer. Since Not All C Environmentscan Support IT, ITS Use is Discouraged, But It Is Included in The XLC Compiler. in Order To Make The Compiler Aware That You Intend To Use Alloca, You Must Put The Line #pragma alloca BEFORE Any Other Statements in The c Source Module (s) Where Alloca IS Called. if you don't do this, XLC Will NOT Recognize Alloca as Anything Special, And You Will Get Errors During Linking. FOR AIX 3.2, IT May Be Easier To Use the -ma flag. Subject: 2.02: How do i compile my bsd programs? The File / USR / LPP / BOS / BSDPORT Contains Information on Now To Port Programs Written for BSD to Aix 3. This file May Be Very Useful for Others as well. A Quick CC Command for MOST "Standard" BSD Programs IS: $ cc -d_bsd -d_bsd_includes -o [loading] [SourceFile.c] -lbsd If Your Software Has System Calls Predefined with no proteotype Parameters, Also Use the -d_no_proto flag. Subject: 2.03: Isn't The Linker Different from what i am used to? Yes. It is not at all like what you are used to: - The Order of Objects and Libraries IS NORMALLY _NOT_ IMPORTANT. THE Linker Reads_All_ Objects Including Those from Libraries Into Memory AND does the actual linking in one go. Even if you need to put a Library of Your OWN TWICE ON THE LD Command Line on Other Systems, IT Is Not Needed on The RS / 6000 - Doing So Will Even Make Your Linking Slower. - One of the features of the linker is that it will replace an Object in An Executable with a New Version of the Same Object: $ cc -o prog prog1.o prog2.o prog3.o # make prog $ cc -c prog2.c # Recompile prog2.c $ cc -o prog.new prog2.o prog # make prog.new from prog # by replacing prog2.o - The Standard C Library /Lib/Libc.a Is Linked Shared, Which Means Thatthe Actual Code Is Not Linked Into Your Program, But Is loading-ONL Once and Linked Dynamically During Loading of Your Program. - The Ld Program Actually Calls The Binder In / USR / LIB / BIND, AND You CAN Give LD Special Options to Get Details About The Invocation of The Binder. Thase Are Found on The Ld Man Page Or in InfoExplorer. - IF Your Program Normally Links Using A Number of Libraries (.a Files), You can 'Prelink' Each of these Into An Object, Which Will Make Your Final Linking Faster. E.G. DO: $ cc -c prop1.c prog2.c prog3.c $ AR CV LIBPROG.A PROG1.O PROG2.O PROG3.O $ ld -r - libprog.o lobprog.a $ cc -o someprog someprog.c lobprog.o This Will Solve All Internal References Between ProG1.O, PROG2.O AND PROG3.O and Save this in Libprog.o kil ilibprog.o to link Your Program instead of libprog.a Will Increase Linking Speed, And Even IF Someprog.c Only Uses, Say PROG1.O and PROG2.O, ONLY Those Two Modules Will Be in your final program. this is also to the fact what Binder CAN Handle Single Objects Inside ONE Object Module As NOTED ABOVE. IF you are useless an -lprog option (for libprog.a) Above, and still want To Be Able To Do So, You Should Name The Prelinked Object with a Standard Library Name, E.G. LibProgp.a (p Identifying a Prelinked Object), That Can Be Specified by -lprogp. You cannot Use the Archiver (ar) on such an object. You Should Also Have a Look at Section 3.01 of this Article, in Particular if You Have Mixed Fortran / C Programs. Dave DennerLine D. DennerLine@bull.com) Claims That His Experiences In Prelinking On Aix Does Not Save Much Time Since MOST People Have Separate Libraries Which Do Not Have Many Dependencies Between Them, Thus Not Many Symbols to Resolve. Subject: 2.04: How do i staticly link my program? Cc -o prog -bnoso -bi: /lib/syscalls.exp Obj1.o obj2.o obj3.o Will Do That for a Program Consisting of The Three Objects Obj1.o, ETC. [Editor's Note: You Should Never Link Programs Static That Are Supposed to Leave Your Local Environment, E.G. Intended for Distribution. staticly linked programs may fail to work after Installing a New Aix Version or Even After Installing a PTF.] From: Marc Pawliger Marc@sti.com) As of Aix 3.2.5, You Can Install a Speedup for AixWindows Called Shared memory transport. To static link an x copLication instator SMT PTF Has Been Installed, You Must Link with -bi: /usr/lpp/x11/bin/smt.exp and the executable will not run on a Machine WHERE SMT IS Not Installed. See /usR/LPP/X11/Readme.SMT
