Path: senator-bedfellow

or if the hdname can't be found:
reducevg -d -f

Be careful with this command. Unlike the exportvg command, actions done

with 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
-------------------------------------

LVM Limits within 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.

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:

AIX V3.2 Max Filesystem size: 2,097,152 bytes (2 GB)

Max single file size: 2,097,152 bytes (2 GB)

AIX V4.1 Max Filesystem size: 67,108,864 bytes (64 GB)

Max single file size: 2,097,152 bytes ( 2 GB)

AIX V4.2 Max Filesystem size: 67,108,864 bytes (64 GB)

Max single file size: 67,108,864 bytes (64 GB)
------------------------------

Subject: 1.800: How do I control how hostnames are resolved?

From: 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
------------------------------
Subjet: 1.801: dtlogin ignores /etc/profile?

From: Trevor Bourget ([e-mail])

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/Xsession.d/*,

/usr/dt/config/Xsession.d/* (backwards, in my opinion, but CDE is a

committee result after all).
>From: Ed Ravin
If you want your terminal session to automatically read in

/etc/profile and your .profile when they start up, you need to either

invoke them with the "-ls" option (which I couldn't figure out how to

do, perhaps someone else can elaborate), or set up the default X

resources so that they set:
*Dtterm*loginShell: true
You 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. They recommend that you copy

the files to /etc/dt/config and change them there, so:

# 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
------------------------------
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 convenient

is probably .

is anohter 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 are supported on a SCSI-1 adapter. This

config will provide SCSI-1 performance.

C. A mix of SCSI-2 and SCSI-1 devices are supported on a SCSI-1

adapter. All devices will have SCSI-1 performance.

D. A mix of SCSI-2 and SCSI-1 devices are 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 after 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 value (11, according to the man

page). 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".

------------------------------
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 would now get an A prompt. Type:

A> fdisk

Create the virtual C drive of whatever 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 one of the bos extensions are commands for transferring files between

DOS diskettes and AIX. The commands are dosread, 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

deleted, probably to conform to U.S. law regarding export of

cryptographic technology.
Other programs such as PGP are available, but their use and/or

possesion may be subject to local laws and regulations.

If anyone has a better answer to this question, feel free to

contribute it.

------------------------------
Subject: 1.905: How do I play audio CDs?

From: [e-mail] (Ronald S. Woan)

Get xmcd by anonymous FTP from ftp.x.org in /contrib/applications/xmcd/


------------------------------
Subject: 1.906: How can I get the mouse back after unplugging it?
/usr/lpp/diagnostics/da/dmousea
------------------------------
Subject: 1.907: Where can I get source code to the operating

system binary xxxxx?

AIX source code is not generally available. Two other UNIX OS' do

make their source available, Linux & freeBSD. Check

and


------------------------------
Subject: 1.908: What's the difference between the POWER and

POWERPC architectures?

Read the POWERPC FAQ at