Re: Use of DIrmaint

[Alan Altmark]

On Monday, 02/23/2004 at 12:03 EST, David Boyes <[EMAIL PROTECTED]>
wrote:
> In the last year or so, DIRM has improved a LOT (thanks, Les!) now that
VM
> is getting some additional development funds.  The VMSM interfaces that
Alan
> suggested are a workable alternative to SRPI, but are *extremely*
difficult
> to use for CMS (there's no CMS code to employ them, and it's a real pain
to
> write RPC code with the unfortunate way LE libraries for C code are
handled
> ...8-().

SRPI?  That's a 3270 interface, completely unsuitable to modern networks.
It was designed to support client-server back when the 3270 connection was
the ONLY connection to the mainframe.

I'm confused by the RPC+LE remark.  What problems have you encountered?
We've written many test programs in C on CMS using the SMAPI RPC calls.

Alan Altmark
Sr. Software Engineer
IBM z/VM Development

Redhat and S390

[Crispin Hugo]

I am new to this Linux on the mainframe lark, so please bare with me.
Is there some where I can download a Redhat for S390  for free so I can see
what its like. It does not need to be current.




Crispin Hugo 

Systems Programmer, Macro 4

http://www.macro4.com/

Macro 4 plc, The Orangery, Turners Hill Road, Worth, Crawley, RH10 4SS

Direct Line: +44 (0)1293 872121 Switchboard: +44 (0) 1293 872000

Fax: +44 (0) 1293 872001

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Re: OT: Laptop running Linux?

[David Boyes]

On Wed, Feb 25, 2004 at 01:39:07PM -0500, Doug Griswold wrote:
> wpc v11 works great for me using wlan_ng.
> The Aironet probably uses the orinoco drivers.
> I have had no success with my Linksys WPC11, which also does, under
> SuSE.

Funny. My WPC11 works fine. I have a v3 WPC11 -- check the version of
the card and firmware versions.

-- db

Re: nfs hangs on NetApp NAS device

[Alan Cox]

On Mer, 2004-02-25 at 20:03, Adam Thornton wrote:
> I'm not a fan of NFS, although I am given to understand that v3 and v4
> work a little better than v2 did.

v2 NFS is fairly simplistic
v3 adds support for files > 2Gb and support for client side asynchronous
writeback done safely

v4 adds a ton of stuff but is very new

Generally speaking there isnt a good reason to run v2 except between
boxes that don't speak v3

Re: z/VM access to EMC (was: Accessing DASD on a Shark from Linux under z/VM)

[Ann Smith]

We have linux/390 guests accessing EMC SAN devices. We found that it does not
perform quite as well as our STK RVA 3390's. But we have not done any stats with
mirroring SAN/NAS or RVA with PPRC.
We only showed we can use the SAN just like any other server here.



McKown, John" wrote:

> > -Original Message-
> > From: David Boyes [mailto:[EMAIL PROTECTED]
> > Sent: Friday, February 20, 2004 11:25 AM
> > To: [EMAIL PROTECTED]
> > Subject: Re: z/VM access to EMC (was: Accessing DASD on a
> > Shark from Linux under z/VM)
> >
> >
> > Linux on 390 Port <[EMAIL PROTECTED]> wrote:
> > > Can Linux under z/VM can access EMC Symmetrix or DMX
> > > as FBA, not as 3390 (similar to the way it can access Shark)?
> >
> >
> > Seems to work fine for us. The volumes must be FCP attached
> > (just like the
> > Shark), and VM itself must still use CKD for now, but it
> > mostly was getting the
> > volume definitions right. Neale (AFAIK) also has some EMC
> > SCSI disk working.
> >
> >
> > -- db
> >
> > David Boyes
> > Sine Nomine Associates
>
> I'm curious. One of the benefits touted, and true, about Linux on zSeries
> vs. some other platform, is the zSeries' strength in I/O. Is this still true
> with FCP attached SCSI DASD? Why would the zSeries drive SCSI DASD better
> than Intel or Sun?
>
> --
> John McKown
> Senior Systems Programmer
> UICI Insurance Center
> Applications & Solutions Team
>
> This message (including any attachments) contains confidential information
> intended for a specific individual and purpose, and its' content is
> protected by law.  If you are not the intended recipient, you should delete
> this message and are hereby notified that any disclosure, copying, or
> distribution of this transmission, or taking any action based on it, is
> strictly prohibited.

Re: OT: Laptop running Linux?

[McKown, John]

> -Original Message-
> From: Ledbetter, Scott E [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, February 25, 2004 2:19 PM
> To: [EMAIL PROTECTED]
> Subject: Re: OT: Laptop running Linux?
>
>
> I, too, had trouble getting SuSE 9 to recognize my
> laptops(Dell) wireless
> card. And in my case, Knoppix works flawlessly, too.
>
> I ended up having to disable the wired ethernet port (ifdown
> eth0), then
> up/down the the wireless card (ifdown eth1/ifup eth1).
>
> Here is where I found the solution:
>
http://www.linuxquestions.org/questions/archive/25/2003/12/4/129084


S390 content:  When are we going to see a pcmcia slot on the z/Series?


Scott Ledbetter
StorageTek

Never, but where is my USB and FireWire?  I want to keep my MP3
collection on the mainframe and download into my MP3 player. And what fun it
would be to have a USB sound card on the mainframe. Image having something
happen and the mainframe tell the operator "I've fallen and I can't get up!"
.

I've honestly wanted that facility for my z/OS system. I would like
something to goose the operator when it's taking them too long to mount a
tape!


--
John McKown
Senior Systems Programmer
UICI Insurance Center
Applications & Solutions Team

This message (including any attachments) contains confidential information
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protected by law.  If you are not the intended recipient, you should delete
this message and are hereby notified that any disclosure, copying, or
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strictly prohibited.

Re: Any looking at CA-ACF2?

[Alan Schilla]

We want to look at the ACF2 - Linux PAM Support but are told this is in
BETA. Is this the same as pam-acf2?
Al Schilla
State of Minnesota

-Original Message-
From: David Boyes [mailto:[EMAIL PROTECTED]
Sent: Monday, February 16, 2004 9:34 AM
To: [EMAIL PROTECTED]
Subject: Re: Any looking at CA-ACF2?


We've looked at it on a couple of occasions, and have opted against the ACF2
solution in favor of native Kerberos or Kerberos plus LDAP as a locator. At
the time we looked at it, the VM version of ACF2 didn't support the LDAP
interface very well (or at least the documentation was somewhat sparse), and
most of our customers main authentication databases for distributed systems
are not in ACF2 (exactly the scenario you posit in your note). Kerberos
proved to be more scalable, and, once the learning curve was overcome, a lot
more stable than the LDAP based solution (don't discount this for
Kerberos -- it's non-trivial if you're used to simple userid/password
schemes).

I understand that the VM ACF2 has gotten a lot of work recently, and it's
probably about time to look at it again, but now that we have the Kerberos
stuff worked out, it's hard to see where going backward to LDAP would be a
useful thing to do. LDAP isn't really intended for authentication, and it's
painfully slow compared to Kerberos. The combination of the two (LDAP to
find the right credential server, and Kerberos for the heavy lifting of the
authentication) is a lot more scalable and functional. The pam_kerb4 and
pam_kerb5 modules are already widely supported, and most Unixen grok
Kerberos fairly well these days. I'd certainly argue that it's a major step
up in security over LDAP, at the price of a fair amount of additional
complexity (even the Windows guys bought a clue on this one...).

Last comment: the Kerb/LDAP solution can be easily replicated on and off the
box by multiple vendors, or by completely open-source alternatives. I really
find the lock-in to a single-vendor solution to be a drawback. Do you
*really* want to have no other options in case your ISV decides to jack up
the support pricing?

One thing that really needs to be done at some point is for some
enterprising soul to write a VM DVM that plugs into the ESM interface and
acts as a PAM client to a real external source. If this were done, then we'd
have a lot more flexibility both for CMS and for Linux. Dunno how hard this
would be, but it'd be really handy to be able to do things like totally
Kerberize the CMS environment w/o major mods.

-- db

David Boyes
Sine Nomine Associates


> -Original Message-
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
> Eric Sammons
> Sent: Saturday, February 14, 2004 1:22 AM
> To: [EMAIL PROTECTED]
> Subject: Any looking at CA-ACF2?
>
>
> Our security group is looking at CA-ACF2 and the pam_acf2
> library offering
> from CA.  There claim is that CA has committed to releasing
> this source to
> the open source community.  Thus far I have only seen a white
> paper that
> states it supports only Linux installs on the Z platform.  I
> am arguing
> that with wide acceptance and support this solution is the
> wrong solution.
>  I have instead suggested that we go with an LDAP pam_ldap.so
> solution.
> Given our environment includes Most Unix platforms available
> to the masses
> and that z/Linux is only just now breaking ground in our
> environment the
> CA-ACF2 pam library solution is not the best solution.  How
> our security
> group opts to secure VM is really of no concern to me, CA-ACF2 at this
> layer is fine with me, it is the pam_acf2 library that concerns me.
>
> Has anyone else looked at this solution?  Any thoughts?  Any
> ideas how to
> argue against and provide a stronger case?
>
> Thanks!
> Eric Sammons
>

Re: OT: Laptop running Linux?

[Ledbetter, Scott E]

I, too, had trouble getting SuSE 9 to recognize my laptops(Dell) wireless
card. And in my case, Knoppix works flawlessly, too.

I ended up having to disable the wired ethernet port (ifdown eth0), then
up/down the the wireless card (ifdown eth1/ifup eth1).

Here is where I found the solution:

http://www.linuxquestions.org/questions/archive/25/2003/12/4/129084


S390 content:  When are we going to see a pcmcia slot on the z/Series?


Scott Ledbetter
StorageTek

-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Adam
Thornton
Sent: Wednesday, February 25, 2004 11:43 AM
To: [EMAIL PROTECTED]
Subject: Re: OT: Laptop running Linux?


On Wed, 2004-02-25 at 05:14, [EMAIL PROTECTED] wrote:
> I am currently sending this email from a T20 running Suse Linux
> Desktop.  The power management seems to work connecting through the
> dock works. So far the only thing I can not get to work is the Cisco
> Airoonet 350 wireless adapter.

The Aironet probably uses the orinoco drivers.

I have had no success with my Linksys WPC11, which also does, under SuSE.

Frustratingly, I can boot from a Knoppix CD and it's detected and turned on
automagically.

Adam

Re: nfs hangs on NetApp NAS device

[Adam Thornton]

On Wed, 2004-02-25 at 12:42, McKown, John wrote:
> If you do not recommend the "soft" option (at least for R/W), what else is
> possible? If the NFS server "dies" or is unavailable for some reason, does
> that mean that all the client boxes which use it should die as well?

Yes.

If you're mounting files you need to have read-write, and the underlying
filesystem goes away, you absolutely do not want to continue operations
with the files you have open.  If you do keep going, e.g. with a soft
mount, you're looking at Data Corruption City.

> I'm
> truly curious because I don't use NFS much. In fact, here at work, we don't
> use it at all. I do use it at home to cross-connect two Linux/Intel boxes.

I'm not a fan of NFS, although I am given to understand that v3 and v4
work a little better than v2 did.

AFS has a lot of nice features, but it's intrusive and doesn't work
quite like a normal Unix filesystem.  GFS looked promising but I haven't
really followed it recently.  A reasonably-performing distributed
read-write filesystem with Unix semantics would be a wonderful
thing...but I don't know of any such thing.

Adam

Re: OT: Laptop running Linux?

[Doug Griswold]

wpc v11 works great for me using wlan_ng.

Doug Griswold
Unix/Linux Support
SC Office of the CIO
(803)896-0153
>>> [EMAIL PROTECTED] 02/25/04 1:43 PM >>>
On Wed, 2004-02-25 at 05:14, [EMAIL PROTECTED] wrote:
> I am currently sending this email from a T20 running Suse Linux
Desktop.  The
> power management seems to work connecting through the dock works. So
far the
> only thing I can not get to work is the Cisco Airoonet 350 wireless
adapter.

The Aironet probably uses the orinoco drivers.

I have had no success with my Linksys WPC11, which also does, under
SuSE.

Frustratingly, I can boot from a Knoppix CD and it's detected and turned
on automagically.

Adam

Re: nfs hangs on NetApp NAS device

[Fargusson.Alan]

When an NFS server dies, or is unavailable the clients should wait until the server 
restarts, or comes back online.  This is what NFS is designed to do anyway.  If you 
box is completely hung there is probably some problem with the client NFS 
implementation.  If your box does not return to normal when the NFS server comes back 
online then there is certainly some problem with the NFS client.

Note that if the server is down for a long time it may take the client a long time to 
realize that the server is back online.

-Original Message-
From: McKown, John [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 25, 2004 10:43 AM
To: [EMAIL PROTECTED]
Subject: Re: nfs hangs on NetApp NAS device


> -Original Message-
> From: Adam Thornton [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, February 25, 2004 12:31 PM
> To: [EMAIL PROTECTED]
> Subject: Re: nfs hangs on NetApp NAS device
>
>
> On Wed, 2004-02-25 at 12:17, McKown, John wrote:
> > I _think_ you need to do a "soft" NFS mount instead of a
> "hard" mount.
> >
> > Try
> >
> > http://www.faqs.org/docs/linux_network/x-087-2-nfs.mountd.html
> >
> > Look at the "soft" option. The "hard" option is the default.
>
> Well, then you won't have to reboot.
>
> But it does mean the data you're getting isn't guaranteed.
>
> If it's r/o that's probably OK.  Never ever ever mount "soft" with rw.
> At least, that's *my* advice.
>
> Adam
>

Adam,

If you do not recommend the "soft" option (at least for R/W), what else is
possible? If the NFS server "dies" or is unavailable for some reason, does
that mean that all the client boxes which use it should die as well? I'm
truly curious because I don't use NFS much. In fact, here at work, we don't
use it at all. I do use it at home to cross-connect two Linux/Intel boxes.


--
John McKown
Senior Systems Programmer
UICI Insurance Center
Applications & Solutions Team

This message (including any attachments) contains confidential information
intended for a specific individual and purpose, and its' content is
protected by law.  If you are not the intended recipient, you should delete
this message and are hereby notified that any disclosure, copying, or
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strictly prohibited.

Re: SuSe administrator's guide?

[Tom Duerbusch]

I go with two books...The Suse Administration Guide,
which if you buy the Professional version for the
desktop , in in hard copy.  And the IBM Redbooks for
installing Linux (Suse) under VM.

Why?  Being a mainframer, and VM bigot (since the
early '80s), I know the mainframe terms and how/what
to do.  I use the Redbooks as a roseta stone to help
translate the Suse manuals.

For example, there is a Redbook on how to install Suse
under VM.  Great.  Some of it is out of date, not only
due to changes in Suse, but in VM.  I can handle the
changes in VM.  So I read the Suse install process.  I
read the counter part in the Redbook, then I
understand.  In my world, there are minidisks.  In the
Linux world, there are hard drives that can be
subdivided into multiple partitions.  So, when the
install manual says one thing, just what does it mean
in my world?

That helped me get over alot of the initial problems
with Linux.

The Linux manuals are written for Linux people.
The Redbooks for Linux under VM are written for VM
people, but are out of date.
Combine the two and you have real knowledge.

Tom Duerbusch
THD Consulting
--- "Fulton, Aaron" <[EMAIL PROTECTED]> wrote:
> Does anyone know the title and author's name of a
> really good SuSe administrator's guide.  RedHat
> information is everywhere but Suse information is
> pretty hard to come by.
>
> Aaron Fulton
> Computer Associates
> Quality Assurance Engineer

Re: nfs hangs on NetApp NAS device

[McKown, John]

> -Original Message-
> From: Adam Thornton [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, February 25, 2004 12:31 PM
> To: [EMAIL PROTECTED]
> Subject: Re: nfs hangs on NetApp NAS device
>
>
> On Wed, 2004-02-25 at 12:17, McKown, John wrote:
> > I _think_ you need to do a "soft" NFS mount instead of a
> "hard" mount.
> >
> > Try
> >
> > http://www.faqs.org/docs/linux_network/x-087-2-nfs.mountd.html
> >
> > Look at the "soft" option. The "hard" option is the default.
>
> Well, then you won't have to reboot.
>
> But it does mean the data you're getting isn't guaranteed.
>
> If it's r/o that's probably OK.  Never ever ever mount "soft" with rw.
> At least, that's *my* advice.
>
> Adam
>

Adam,

If you do not recommend the "soft" option (at least for R/W), what else is
possible? If the NFS server "dies" or is unavailable for some reason, does
that mean that all the client boxes which use it should die as well? I'm
truly curious because I don't use NFS much. In fact, here at work, we don't
use it at all. I do use it at home to cross-connect two Linux/Intel boxes.


--
John McKown
Senior Systems Programmer
UICI Insurance Center
Applications & Solutions Team

This message (including any attachments) contains confidential information
intended for a specific individual and purpose, and its' content is
protected by law.  If you are not the intended recipient, you should delete
this message and are hereby notified that any disclosure, copying, or
distribution of this transmission, or taking any action based on it, is
strictly prohibited.

Re: OT: Laptop running Linux?

[Rich Smrcina]

I'm using Fabrice Bellet's revised Airo driver for this card.  It works
great with RH9.  See http://bellet.info/~bellet/laptop/t40.html.  Click
on Wireless, it will take you to a section that mentions his development
and links to the code.

On Wed, 2004-02-25 at 05:14, [EMAIL PROTECTED] wrote:
> I am currently sending this email from a T20 running Suse Linux Desktop.  The
> power management seems to work connecting through the dock works. So far the
> only thing I can not get to work is the Cisco Airoonet 350 wireless adapter.
>
> regards
> Phil Tully
>
>
> ==
>
> If you are not an intended recipient of this e-mail, please notify
> the sender, delete it and do not read, act upon, print, disclose,
> copy, retain or redistribute it.
>
> Click here for important additional terms relating to this e-mail.
>  
>
> ==
--
Rich Smrcina
Sr. Systems Engineer
DSG eServer & Linux Solutions
Milwaukee, WI
rsmrcina at wi.rr.com
rsmrcina at dsgroup.com

Catch the WAVV! Stay for requirements and the free-for-all.
Update your zSeries skills in 4 days for a very reasonable price.
WAVV 2004 in Chattanooga, TN
April 30-May 4, 2004
For details see http://www.wavv.org

Re: OT: Laptop running Linux?

[Adam Thornton]

On Wed, 2004-02-25 at 05:14, [EMAIL PROTECTED] wrote:
> I am currently sending this email from a T20 running Suse Linux Desktop.  The
> power management seems to work connecting through the dock works. So far the
> only thing I can not get to work is the Cisco Airoonet 350 wireless adapter.

The Aironet probably uses the orinoco drivers.

I have had no success with my Linksys WPC11, which also does, under
SuSE.

Frustratingly, I can boot from a Knoppix CD and it's detected and turned
on automagically.

Adam

Re: OT: Laptop running Linux?

[txphil]

I am currently sending this email from a T20 running Suse Linux Desktop.  The
power management seems to work connecting through the dock works. So far the
only thing I can not get to work is the Cisco Airoonet 350 wireless adapter.

regards
Phil Tully


==

If you are not an intended recipient of this e-mail, please notify
the sender, delete it and do not read, act upon, print, disclose,
copy, retain or redistribute it.

Click here for important additional terms relating to this e-mail.
 

==

Re: New xip2fs patches on the web site

[Post, Mark K]

It's hard to say, but my guess would be no, until such time as this code
makes it into the official kernel sources.  That's been a pretty consistent
policy of theirs recently (excepting stuff they write/backport themselves).


Mark Post

-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Sal
Torres/SBC Inc.
Sent: Wednesday, February 25, 2004 9:32 AM
To: [EMAIL PROTECTED]
Subject: Re: New xip2fs patches on the web site


*** Reply to note of Wed, 25 Feb 2004 13:48:41 +0100
*** by [EMAIL PROTECTED]

Will Red Hat support xip2fs?

Thanks Sal

Re: nfs hangs on NetApp NAS device

[Adam Thornton]

On Wed, 2004-02-25 at 12:17, McKown, John wrote:
> I _think_ you need to do a "soft" NFS mount instead of a "hard" mount.
>
> Try
>
> http://www.faqs.org/docs/linux_network/x-087-2-nfs.mountd.html
>
> Look at the "soft" option. The "hard" option is the default.

Well, then you won't have to reboot.

But it does mean the data you're getting isn't guaranteed.

If it's r/o that's probably OK.  Never ever ever mount "soft" with rw.
At least, that's *my* advice.

Adam

Re: nfs hangs on NetApp NAS device

[McKown, John]

I _think_ you need to do a "soft" NFS mount instead of a "hard" mount.

Try

http://www.faqs.org/docs/linux_network/x-087-2-nfs.mountd.html

Look at the "soft" option. The "hard" option is the default.

--
John McKown
Senior Systems Programmer
UICI Insurance Center
Applications & Solutions Team

This message (including any attachments) contains confidential information
intended for a specific individual and purpose, and its' content is
protected by law.  If you are not the intended recipient, you should delete
this message and are hereby notified that any disclosure, copying, or
distribution of this transmission, or taking any action based on it, is
strictly prohibited.

> -Original Message-
> From: Betsie Spann [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, February 25, 2004 12:12 PM
> To: [EMAIL PROTECTED]
> Subject: nfs hangs on NetApp NAS device
>
>
> My RH AS 3.0 system frequently hangs with the message   "nfs:
> server pafiler not responding"
> It's a NetApp NAS device that is ro nfs mounted by the entire
> universe here.  My Linux guest frequently waits on it.  Then
> it has to be rebooted.  Network restarts hang on the server also.
> I am using NFS vers 3 with a timeo value of 40 and
> rsize/wsize of 8192 using UDP.   I'm going to try the tcp
> option next.
> Any suggestions or known problems, please?
> Betsie
>

nfs hangs on NetApp NAS device

[Betsie Spann]

My RH AS 3.0 system frequently hangs with the message   "nfs: server pafiler not 
responding"
It's a NetApp NAS device that is ro nfs mounted by the entire universe here.  My Linux 
guest frequently waits on it.  Then it has to be rebooted.  Network restarts hang on 
the server also.
I am using NFS vers 3 with a timeo value of 40 and rsize/wsize of 8192 using UDP.   
I'm going to try the tcp option next.  
Any suggestions or known problems, please?
Betsie 

Re: New xip2fs patches on the web site

[Post, Mark K]

Adam,

Yes, sorry.  Long day yesterday, and a late night, so my apologies.  BTW, if
you can crack the web server, Barton will be very interested in hearing how
you did it.  :)


Mark Post

-Original Message-
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Adam
Thornton
Sent: Wednesday, February 25, 2004 11:21 AM
To: [EMAIL PROTECTED]
Subject: Re: New xip2fs patches on the web site


On Tue, 2004-02-24 at 23:51, Mark Post wrote:
> The patches are at http://linuxvm.org/Patches, as usual, but there
> appears to be a problem with the web server when trying to retrieve
> patch #1.  So, instead of using
> file:///d:/webpages/linuxvm.org/Patches/S390/xip2fs_part1.diff.gz as
> the URL, try file:///d:/webpages/linuxvm.org/Patches/S390/xip2fs1.gz
> and see if that works better.

The file URLs are not going to help us very much, unless we're on that box.
Is the implicit preface to this, "first, crack the webserver" ?

Did you mean http://linuxvm.org/Patches/S390/xip2fs1.gz ?

Adam

Re: The system hungs up

[Leonardo Rodriguez]

Yes, you're right I forgot to put in the note the number "1". That's
exactly what I did but it didn't work.

Any suggestion?

Leonardo





"Wolfe, Gordon W" <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port <[EMAIL PROTECTED]>
02/25/2004 12:48 PM
Please respond to Linux on 390 Port

To: [EMAIL PROTECTED]
cc:
Subject:Re: The system hungs up


Try the last command as

mkfs.reiserfs /dev/dasdx1

The fdasd creates a single partition and the mkfs command worsk on
partitions.

-Original Message-
From: Leonardo Rodriguez [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 25, 2004 6:14 AM
To: [EMAIL PROTECTED]
Subject: The system hungs up


Hi There,

I think this doesn't arrive to all of you and I'm resending it.

I installed SLES8 with SP2 on a LPAR, once the system was installed I
decided to add a new disk to the system so I used the dasd script which
is on one of the IBM Websites.

#dasd add 
#dasdfmt -p -f /dev/dasdx -b 4096 -l LEVEL
#fdasd /dev/dasdx
#mkfs.reiserfs /dev/dasdx


When I reach the last step the machine hungs up. It tells me that it is
on a Syncing process but it does nothing and I can't even kill the
process using the -9 option because it's a uninterruptable process.

Could anyboy here tell me if it is a system bug or anything else?

Thanks in advance

Leonardo

Re: The system hungs up

[Wolfe, Gordon W]

Try the last command as

mkfs.reiserfs /dev/dasdx1

The fdasd creates a single partition and the mkfs command worsk on
partitions.

-Original Message-
From: Leonardo Rodriguez [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, February 25, 2004 6:14 AM
To: [EMAIL PROTECTED]
Subject: The system hungs up


Hi There,

I think this doesn't arrive to all of you and I'm resending it.

I installed SLES8 with SP2 on a LPAR, once the system was installed I
decided to add a new disk to the system so I used the dasd script which
is on one of the IBM Websites.

#dasd add 
#dasdfmt -p -f /dev/dasdx -b 4096 -l LEVEL
#fdasd /dev/dasdx
#mkfs.reiserfs /dev/dasdx


When I reach the last step the machine hungs up. It tells me that it is
on a Syncing process but it does nothing and I can't even kill the
process using the -9 option because it's a uninterruptable process.

Could anyboy here tell me if it is a system bug or anything else?

Thanks in advance

Leonardo

Re: New xip2fs patches on the web site

[Adam Thornton]

On Tue, 2004-02-24 at 23:51, Mark Post wrote:
> The patches are at http://linuxvm.org/Patches, as usual, but there appears
> to be a problem with the web server when trying to retrieve patch #1.  So,
> instead of using
> file:///d:/webpages/linuxvm.org/Patches/S390/xip2fs_part1.diff.gz as the
> URL, try file:///d:/webpages/linuxvm.org/Patches/S390/xip2fs1.gz and see if
> that works better.

The file URLs are not going to help us very much, unless we're on that
box.  Is the implicit preface to this, "first, crack the webserver" ?

Did you mean http://linuxvm.org/Patches/S390/xip2fs1.gz ?

Adam

Re: SuSe administrator's guide?

[Alan Cox]

On Mer, 2004-02-25 at 16:01, Chris Cox wrote:
> Now... as far as "really good" goes... that depends.
> I haven't found ANY book on ANY *ix that I'd call
> "really good".

There are a couple I'd suggest that may make the rating and are not
developer bugs per se

- Lasser, Think Unix

Which is a book about how Unixthink works and very good in the sense
that it explains the reasoning behind the way the beast you are
attempting to admin works

- Linux Servers 24x7

As a "the company wizard has gone on holiday, the brown and sticky is
approaching the fan at alarming speed now what" kind of book. Its a nice
guide (although now a little dated) to stuff like Apache and Sendmail
that covers config files not the GUI apps and so is good for getting
that extra stage beyond screaming and hiding in the cupboard when the
gui config tools won't work.

Alan
--
"DASD is not really IBM - it has a vowel"
-Arjan van de Ven

Re: New xip2fs patches on the web site

[Alan Cox]

On Mer, 2004-02-25 at 10:35, Carsten Otte wrote:
> Hi Alan,
>
> as far as I know, ROMfs does not support execute in place? What is done
> here is that userspace adress tables effectively refer into the shared
> memory segment. (see nopage and mmap functions in fs/xip2fs/file.c)

My error - ramfs does, romfs (except the versions in ucLinux) do not.

Alan

Re: RPM question

[Hall, Ken (IDS ECCS)]

I found tripwire to be useful in identifying added files when creating or updating 
complex RPM's.  Run it before doing make/make install, and again after, and you get a 
list of files added and
changed.

> -Original Message-
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
> Alan Cox
> Sent: Wednesday, February 18, 2004 4:53 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [LINUX-390] RPM question
>
>
> On Mer, 2004-02-18 at 18:15, Ranga Nathan wrote:
> > On my slackware (Intel) I always used the 'configure, make,
> make install'
> > process. It worked flawlessly everytime. This way I always
> got the latest
> > software. With RPMs I have had problems and then I had to
> go under the
> > hood. RPM's are usually behind since there is a process to
> build the RPM
> > and test it.
>
> You can do that with RPM based distributions too, but it
> turns them into
> slackware rather rapidly (ie no dependancy management, no
> verification,
> no change control)
>
> The way I normally roll an updated RPM is
>
> Grab old SRPM
> Install
> Edit spec file and change versions
> Add new version tar ball into sources
> Try and build
>
> Any patches that fail check if they have been applied or if
> they matter.
> Adjust and/or remove
>
> Build
> Install
>

==

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==

Re: LVM Question

[Hall, Ken (IDS ECCS)]

Yes, we confirmed this some time ago.  The number of stripes HAS to equal the number 
of physical volumes in the LV.

You can have a VG of, say, 10 PV's, with two striped LV's, 5 and 5 (both 5 stripes) or 
6 and 4 (6 and 4 stripes), but if you want all 10 PV's in one LV, it has to be 10 
stripes.

We have some very large LV's that are 29 stripes.  Seems to work fine.

> -Original Message-
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED]
> Behalf Of Vic
> Cross
> Sent: Saturday, February 21, 2004 7:31 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [LINUX-390] LVM Question
>
>
> G'day Dave,
>
> On Fri, 20 Feb 2004, Dave MYERS wrote:
>
> > I tried using more mod 9's...but kept getting the same msg.
> > The only way it would let me build this 100gb filesystem
> was with STRIPE=1.
>
> What value(s) did you use for stripe?  I have seen someplace
> (and it makes
> sense to me, and indeed has worked for me) that the number of
> stripes for
> the logical volume should equal the number of physical volumes in the
> volume group.  (It makes sense to me because this way you would be
> spreading the data access evenly over all of the PVs in the VG.)
>
> Did the volume group already have one or more logical volumes
> allocated?
>
> Cheers,
> Vic Cross
>

==

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the sender, delete it and do not read, act upon, print, disclose,
copy, retain or redistribute it.

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==

Re: SuSe administrator's guide?

[Chris Cox]

Fulton, Aaron wrote:
Does anyone know the title and author's name of a really good SuSe administrator's guide.  RedHat information is everywhere but Suse information is pretty hard to come by.

(Stating the obvious)  Is there something wrong with
the SUSE Administration Guide that comes with SUSE?
If you don't have the hardcopy, it's a package that
can be easily installed (if not already).
Now... as far as "really good" goes... that depends.
I haven't found ANY book on ANY *ix that I'd call
"really good".

Re: Linux/390, JDK and ODBC

[James Melin]

Well I can answer that two ways

I have this installed within WebSphere:

rockhopper:/FileServer # /opt/WebSphere/AppServer/java/jre/bin/java
-fullversionjava full version "J2RE 1.3.1 IBM build cx390131-20030618"

and this installed everywhere else

rockhopper:/FileServer # java -fullversion
java full version "J2RE 1.4.0 IBM build cx390140-20020830"

So I would say that both JRE's should be easily attainable from IBM.
Including the one you want.




 Neal Scheffler
 <[EMAIL PROTECTED]
 ler.com>   To
 Sent by: Linux on [EMAIL PROTECTED]
 390 Port   cc
 <[EMAIL PROTECTED]
 IST.EDU>  Subject
   Linux/390, JDK and ODBC

 02/25/2004 08:33
 AM


 Please respond to
 Linux on 390 Port
 <[EMAIL PROTECTED]
 IST.EDU>






Hi,

I have a customer looking at moving an application to Linux/390. I have
RedHat linux 7.2 installed.  He has asked me a couple of questions I cannot
answer without some research.

In the interest of giving him a speedy response, does anybody know the
answers to his questions?

1. What versions of JDK are available for Linux/390? We need JDK 1.3.1.
2. Is there an ODBC driver for DB2?

Thanks for any responses,
Neal Scheffler
DaimlerChrysler

Re: Linux/390, JDK and ODBC

[Rich Smrcina]

Yes, JDK 1.3.1 is available for Linux.  Check http://www.ibm.com/java,
click on Downloads & Products.

A DB2 ODBC driver is provided with the DB2 product.  Whether you install
the full server or the Run Time client, ODBC should be available.

On Wed, 2004-02-25 at 08:33, Neal Scheffler wrote:
> Hi,
>
> I have a customer looking at moving an application to Linux/390. I have
> RedHat linux 7.2 installed.  He has asked me a couple of questions I cannot
> answer without some research.
>
> In the interest of giving him a speedy response, does anybody know the
> answers to his questions?
>
> 1. What versions of JDK are available for Linux/390? We need JDK 1.3.1.
> 2. Is there an ODBC driver for DB2?
>
> Thanks for any responses,
> Neal Scheffler
> DaimlerChrysler
--
Rich Smrcina
Sr. Systems Engineer
DSG eServer & Linux Solutions
Milwaukee, WI
rsmrcina at wi.rr.com
rsmrcina at dsgroup.com

Catch the WAVV! Stay for requirements and the free-for-all.
Update your zSeries skills in 4 days for a very reasonable price.
WAVV 2004 in Chattanooga, TN
April 30-May 4, 2004
For details see http://www.wavv.org

SuSe administrator's guide?

[Fulton, Aaron]

Does anyone know the title and author's name of a really good SuSe administrator's 
guide.  RedHat information is everywhere but Suse information is pretty hard to come 
by.

Aaron Fulton 
Computer Associates
Quality Assurance Engineer

Linux/390, JDK and ODBC

[Neal Scheffler]

Hi,

I have a customer looking at moving an application to Linux/390. I have
RedHat linux 7.2 installed.  He has asked me a couple of questions I cannot
answer without some research.

In the interest of giving him a speedy response, does anybody know the
answers to his questions?

1. What versions of JDK are available for Linux/390? We need JDK 1.3.1.
2. Is there an ODBC driver for DB2?

Thanks for any responses,
Neal Scheffler
DaimlerChrysler

Re: New xip2fs patches on the web site

[Sal Torres/SBC Inc.]

*** Reply to note of Wed, 25 Feb 2004 13:48:41 +0100
*** by [EMAIL PROTECTED]

Will Red Hat support xip2fs?

Thanks Sal

Carsten Otte <[EMAIL PROTECTED]> writes:
>Rob van der Heij wrote:
>>Be aware this is very early development and we still need to learn about
>what it can do.
>I do disagree here. The code is derived from second extended filesystem
>(known to be stable) and well tested. It is rock-solid and will be
>supported/serviced by SuSE and IBM. Although I am not an expert for CP,
>the CP portion of it seems to be very solid, too. (*works for me, have'nt
>seen a single problem with it*)
>The second half I do 100% agree with you, one closely needs to figure out
>how to use it and for what data it is wise to use it per usage-case. In
>general it seems best to share executeable files and libraries that are
>frequently used by a large amount of Linux images, and it is
>counterproductive to share things that are not frequently used.
>
>with kind regards
>Carsten Otte
>--
>I saw screens of green, red messages too, then came blue, shubidu
>And i think to myself, what a wonderful world

The system hungs up

[Leonardo Rodriguez]

Hi There,

I think this doesn't arrive to all of you and I'm resending it.

I installed SLES8 with SP2 on a LPAR, once the system was installed I
decided to add a new disk to the system so I used the dasd script which is
on one of the IBM Websites.

#dasd add 
#dasdfmt -p -f /dev/dasdx -b 4096 -l LEVEL
#fdasd /dev/dasdx
#mkfs.reiserfs /dev/dasdx


When I reach the last step the machine hungs up. It tells me that it is on
a Syncing process but it does nothing and I can't even kill the process
using the -9 option because it's a uninterruptable process.

Could anyboy here tell me if it is a system bug or anything else?

Thanks in advance

Leonardo

Re: New xip2fs patches on the web site

[Carsten Otte]

Rob van der Heij wrote:
>Be aware this is very early development and we still need to learn about
what it can do.
I do disagree here. The code is derived from second extended filesystem
(known to be stable) and well tested. It is rock-solid and will be
supported/serviced by SuSE and IBM. Although I am not an expert for CP,
the CP portion of it seems to be very solid, too. (*works for me, have'nt
seen a single problem with it*)
The second half I do 100% agree with you, one closely needs to figure out
how to use it and for what data it is wise to use it per usage-case. In
general it seems best to share executeable files and libraries that are
frequently used by a large amount of Linux images, and it is
counterproductive to share things that are not frequently used.

with kind regards
Carsten Otte
--
I saw screens of green, red messages too, then came blue, shubidu
And i think to myself, what a wonderful world

System hungs up

[Leonardo Rodriguez]

Hi There,

I installed SLES8 with SP2 on a LPAR, once the system was installed I
decided to add a new disk to the system so I used the dasd script which is
on one of the IBM Websites.

#dasd add 
#dasdfmt -p -f /dev/dasdx -b 4096 -l LEVEL
#fdasd /dev/dasdx
#mkfs.reiserfs /dev/dasdx


When I reach the last step the machine hungs up. It tells me that it is on
a Syncing process but it does nothing and I can't even kill the process
using the -9 option because it's a uninterruptable process.

Could anyboy here tell me if it is a system bug or anything else?

Thanks in advance

Leonardo

Re: LINUX-390 Digest - 23 Feb 2004 to 24 Feb 2004 (#2004-53)

[Rich Smrcina]

Tim, and others,

The z/VM web site has a link section on the main page that can provide
you with information on the benefits that z/VM provides to Linux.  See
http://www.vm.ibm.com and scroll down to 'z/VM and Linux resources'.
The very first link in that section will take you to another page that
has more links to alot more information, including 'Why run Linux on
VM?' and 'VM functions that Linux can exploit'.

If there are additional questions, we'd be glad to answer them.  Happy
reading!

On Wed, 2004-02-25 at 03:35, Tim Simpson wrote:
> Alejandro wrote:-
>
> >
> >Date:Tue, 24 Feb 2004 11:45:05 -0600
> >From:Alejandro Leyva Rabinovich <[EMAIL PROTECTED]>
> >Subject: Re: overwrite user direct c from a linux guest
> >
> >I'm a Linux person, I'm really new to vm and mainframe, so its more easy
> >for me and my colleagues to administer zvm from linux. Also, we only use
> >our zvm for linux guests, apache, postgres, amanda, etc, so we can
> >automate much of our daily work with linux.
> >
> >
>
> I am in much the same postion here, know linux well but have virtually no
> knowledge of Zvm and
> IBM kit in general. We also only use our Z800 for running linux machines its
> the only reason we bought it.
>
> What I really need is some pointers to good online documentation about Zvm
> which we need to know to exploit the system
>
> Most of what is discussed on this list goes right over our heads.
>
> as an example how do you backup the user direct file (at the moment we are
> cutting and pasting to another application)
>
> is there any other files like the user direct which really need backed up
>
> etc etc etc
>
> Has anyone written a guide to Zvm for folk from a Linux / Unix background
>
> thanks
>
> Tim
--
Rich Smrcina
Sr. Systems Engineer
DSG eServer & Linux Solutions
Milwaukee, WI
rsmrcina at wi.rr.com
rsmrcina at dsgroup.com

Catch the WAVV! Stay for requirements and the free-for-all.
Update your zSeries skills in 4 days for a very reasonable price.
WAVV 2004 in Chattanooga, TN
April 30-May 4, 2004
For details see http://www.wavv.org

Re: New xip2fs patches on the web site

[Rob van der Heij]

Alan Altmark wrote:

Excellent.  This is what the world has been waiting for.  The full power
of shared memory on z/VM will be visible:  A single copy of a file in
memory, regardless of how many processes or virtual machines are using it.
No wasted I/O operations and no wasted memory.

The benefits you can get from this are impressive, and required for
running a lot of Linux guests.
Be aware this is very early development and we still need to learn about
what it can do.
Exploiting this uses portions of CP that have not been used in this way
before, and there are plenty of situations where it becomes counter
productive.
Rob

Re: New xip2fs patches on the web site

[Carsten Otte]

Hi Alan,

as far as I know, ROMfs does not support execute in place? What is done
here is that userspace adress tables effectively refer into the shared
memory segment. (see nopage and mmap functions in fs/xip2fs/file.c)

with kind regards
Carsten Otte
--
I saw screens of green, red messages too, then came blue, shubidu
And i think to myself, what a wonderful world




Alan Cox <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port <[EMAIL PROTECTED]>
25/02/2004 11:18 AM
Please respond to Linux on 390 Port


To: [EMAIL PROTECTED]
cc:
Subject:Re: New xip2fs patches on the web site



On Mer, 2004-02-25 at 07:17, Alan Altmark wrote:
> Excellent.  This is what the world has been waiting for.  The full power
> of shared memory on z/VM will be visible:  A single copy of a file in
> memory, regardless of how many processes or virtual machines are using
it.
>  No wasted I/O operations and no wasted memory.

Not sure why they have written an fs for it unless its also writable
while in use (ie a cluster fs). Romfs can already support this feature,
you just need to set up the mappings and stick romfs on top of the
relevant memory image.

Its definitely useful

Re: New xip2fs patches on the web site

[Alan Cox]

On Mer, 2004-02-25 at 07:17, Alan Altmark wrote:
> Excellent.  This is what the world has been waiting for.  The full power
> of shared memory on z/VM will be visible:  A single copy of a file in
> memory, regardless of how many processes or virtual machines are using it.
>  No wasted I/O operations and no wasted memory.

Not sure why they have written an fs for it unless its also writable
while in use (ie a cluster fs). Romfs can already support this feature,
you just need to set up the mappings and stick romfs on top of the
relevant memory image.

Its definitely useful

Re: LINUX-390 Digest - 23 Feb 2004 to 24 Feb 2004 (#2004-53)

[Tim Simpson]

Alejandro wrote:-

>
>Date:Tue, 24 Feb 2004 11:45:05 -0600
>From:Alejandro Leyva Rabinovich <[EMAIL PROTECTED]>
>Subject: Re: overwrite user direct c from a linux guest
>
>I'm a Linux person, I'm really new to vm and mainframe, so its more easy
>for me and my colleagues to administer zvm from linux. Also, we only use
>our zvm for linux guests, apache, postgres, amanda, etc, so we can
>automate much of our daily work with linux.
>
>

I am in much the same postion here, know linux well but have virtually no
knowledge of Zvm and
IBM kit in general. We also only use our Z800 for running linux machines its
the only reason we bought it.

What I really need is some pointers to good online documentation about Zvm
which we need to know to exploit the system

Most of what is discussed on this list goes right over our heads.

as an example how do you backup the user direct file (at the moment we are
cutting and pasting to another application)

is there any other files like the user direct which really need backed up

etc etc etc

Has anyone written a guide to Zvm for folk from a Linux / Unix background

thanks

Tim

Re: New xip2fs patches on the web site

[Carsten Otte]

For those who want to try:
- Apply the latest patches from developerworks including dcss block device
- Apply the patches from linuxvm
- make sure to select xip2 filesystem in the filesystems menu, and dcss
block device support in block devices
- compile and install
- create a dcss with ext2 filesystem on it, and put executable files and
libraries onto the filesystem
- save the dcss segment using the block device
- reboot and issue a command like
mount -t xip2 -o ro,memarea=MYDCSS none /mnt
to mount the new filesystem and gain memory resources 8-))

with kind regards
Carsten Otte
--
I saw screens of green, red messages too, then came blue, shubidu
And i think to myself, what a wonderful world




Mark Post <[EMAIL PROTECTED]>
Sent by: Linux on 390 Port <[EMAIL PROTECTED]>
25/02/2004 06:51 AM
Please respond to Linux on 390 Port


To: [EMAIL PROTECTED]
cc:
Subject:New xip2fs patches on the web site



I received two patches from SUSE against the 2.4.21 Linux kernel that
implement xip2fs, or Execute In Place ext2 file system.  The commentary I
received was this:
"Xip2fs is a file system driver that allows you to mount an
ext2-compatible
file system from a DCSS (VM Discontiguous Shared Segment). The benefit of
using xip2fs instead of mounting the file system as ext2 using the DCSS
block device driver is that xip2fs provides execute-in-place capability.

"This means that memory-mapping a file residing on xip2fs will simply
result
in the user process' page table entries pointing directly to the DCSS
pages,
as opposed to reading file pages into the page cache (as a typical ext2
mounted file system would do).

"Since all executables and shared libraries are memory-mapped in order to
execute, running those from an xip2 mounted file system will mean that all
processes across all VM guests in the system that use these files will
share
the same physical pages of memory to hold the executable code, potentially
resulting in significant overall memory savings."

This looks like a nice way to reduce the storage footprint for Linux/390
guests that are using a shared read-only file system in a DCSS.

My understanding is that documentation for this new driver will be
arriving
in the next week or so.  When I hear anything definite, I'll send another
note to the list.

The patches are at http://linuxvm.org/Patches, as usual, but there appears
to be a problem with the web server when trying to retrieve patch #1.  So,
instead of using
file:///d:/webpages/linuxvm.org/Patches/S390/xip2fs_part1.diff.gz as the
URL, try file:///d:/webpages/linuxvm.org/Patches/S390/xip2fs1.gz and see
if
that works better.


Mark Post