A generic suggestion to check is that nothing has duplicate IPs. I've done
this before by accident and caused no end of confusion until I tracked it
down. You'll see intermittent behavior like that due to ARP wars where
each system tries to own the IP, and it depends on the local ARP cache of
If you're using a 2.6.x kernel, you can turn on LLC emulation via proc for the
device (It's in the channel howto stuff for 2.6, I can find it later). This
lets an unmodified tcpdump (and other sniffing tools) work.
-m
On Fri, Aug 20, 2004 at 07:49:16PM +0200, Rob van der Heij wrote:
Tom
Slightly apples-to-oranges, but we discovered that using reiser with
virtualization on Intel led to huge performance losses. With 15 UML machines
with reiser root drives, we were seeing 100% CPU load on the host while idle,
and almost unuseable performance in the guests. Changing to ext3 w/out
I use the OpenSSH user chroot patch, here:
http://sourceforge.net/projects/chrootssh/
and it works like a charm. It uses a magic token in the users home dir path
in passwd - so users home dirs become:
/path/to/chroot/base/./path/to/user/home
We combine it with the 'scponly' shell to
Here's an odd one:
We're trying to get OSPF route distribution working between Linux/390 and
zVM 4.3 TCP 430, using guest LANs.
We're running Linux 2.4.17 and Zebra 0.93b, and we've confirmed that
multicast and OSPF work over the guest LANs under linux exclusively -
two linux systems on the
Unfortunately, a recent issue of Phrack had a detailed article about converting
x86 exploit code to the s/390.
obscurity != security. It may take a little more effort for someone to run
the exploit on s/390, but the payoff of playing with big iron sure makes it
tempting!
-m
Think about what a
2.4.x turns devfs on by default on s/390. I'd guess you have mount devfs on
boot turned on in filesystem options - either turn it off, or edit your
init/fstab records to point to the devfs path:
/dev/dasd/Dasd device number/part1
if I recall, but that's from fuzzy memory.
-m
On Fri, Oct 11,
http://www.phrack.org/gogetit/phrack59.tar.gz
is issue 59 of Phrack, which includes the article:
Linux/390 shellcode development
Nothing everyone hasn't already seen on other platforms, it just means we're
finally attracting enough attention to get exploits focused on us.
Happy readings, and
fsck.ext2: No such file or directory while trying to open /dev/dasdb1
Most likely it is devfs - mount on boot is enabled by default in the
kernel patches, which means /dev gets replaced with the dynamically generated
devfs which doesn't have dasd in the same place.
If you turn off the
the virtual machine continue processing after a console
interrupt...
john alvord
On Mon, 24 Jun 2002 15:34:02 -0400, Mike Kershaw
[EMAIL PROTECTED] wrote:
On Mon, Jun 24, 2002 at 09:34:39AM -0400, Coffin Michael C wrote:
Hi Mike,
When your Linux/390 guest is in CP READ mode, have you tried
console.
I've tried it with the console attached and disconnected.
-m
-Original Message-
From: Mike Kershaw [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 20, 2002 12:31 PM
To: [EMAIL PROTECTED]
Subject: 2.4.17-may timer pop problems
I'm running 2.4.17-may with the no timer
I'm running 2.4.17-may with the no timer patch, qdio, and guest lans.
I've noticed it has the highly unfortunate tendency to just completely drop
dead with no errors on the console. The console drops into CP READ on
any attempt to interact with the linux/390 system, and will not resume.
a
Further, be a bit careful with DHCP relays in this environment. While the
MAC addresses generated by VM are in the 00-04-AC range allocated to IBM,
they aren't guaranteed to be unique (hey, they're generated out of thin
air!) in the network universe. If y'all think that's a Real Problem,
I did them on 2.2.16, it was just a matter of applying the patch to the
kernel source as per the instructions on the ACL site and rebuilding. Seemed
to work fine, never stressed them excessively.
-m
On Tue, Apr 16, 2002 at 12:31:29PM -0700, Wolfe, Gordon W wrote:
Does anyone know if anyone
We use secondary users, prop scripts, and a custom shell running on the
console, here.
Heres the shell to run on the console for your linux/390 guests:
http://reason.marist.edu/patches/bootshell-1.3.cc
Then you just SEND it halt text from the secuser, and the operators never
need know your
On Wed, Feb 13, 2002 at 09:36:17AM -0500, [EMAIL PROTECTED] wrote:
Any one have an idea what this message means? How to fix it? It is from
the original SuSE GA.
SLNX003: Feb 13 09:30:48 slnx003 modprobe: modprobe: Can't locate module
binfmt
-4c46
I'd guess that's binfmt_misc trying to
I've still always had excellent luck with the following:
cp -avx / /new
This will copy (a)rchive, (v)erbose, (x) one filesystem from / to /new.
Preserves all permissions, symlinks, etc, and much easier than a tarball.
Verbose being of course optional.
Just my $0.02 on it.
-m
On Wed, Jan
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