One of my customer UML instances started crashing last night. It was
originally running under a very old version of the kernel, so I upgraded to
2.6.28.7. However, we are still encountering the crashes. I've verified that
the customer has not exhausted their disk space, but the error seems to
I'm interested in trying a more recently kernel version that 2.6.24. Where
would I download the latest version of SKAS4? Also, is it available for
2.6.27? Has it reached the point where it is considered production or beta
quality? Or is it still alpha code?
If it is still alpha code, are there
I have been running several UML instances on older kernels for some time
hoping to see a fix for the random issue. However, a recent upgrade to
2.6.26-rc5 now reults in periodic boot failures of the virtual systems.
Downgrading to 2.6.25-rc2-mm1 returns to previous behavior (reliable boot,
but
On Fri, Feb 29, 2008 at 12:35:38PM +0100, Jan Wolff wrote:
Could the entropy in /dev/random be exhausted because Anthony drains
more
entropy than is produced?
That's what I'm thinking. The UML /dev/hw_random is attached to the
host's /dev/random. If you have rng-utils installed in the
On Sat, Feb 23, 2008 at 11:14:51AM -0800, Anthony Brock wrote:
My instance has the follow on the file system:
# ls -lA /dev/*rand*
crw-rw-rw- 1 root root 1, 8 2008-02-11 11:43 /dev/random
crw-rw-rw- 1 root root 1, 9 2008-02-23 10:06 /dev/urandom
#
Is it possible that recent kernel
Quoting Jeff Dike [EMAIL PROTECTED]:
On Tue, Feb 26, 2008 at 08:30:35AM -0800, Anthony Brock wrote:
It appears that this patch is designed against 2.6.22. Do you want me to
downgrade from 2.6.24.2 to 2.6.22 to try this?
It's against 2.6.25-rc2-mm1.
Jeff
Okay
On Tue, Feb 26, 2008 at 02:12:53PM -0800, Anthony Brock wrote:
So, I'm going to try and manually fit the rejected portions into the code.
It has obviously been too long since I developed any software. I worked
past this issue with the '-l' flag to patch and it is currently compiling.
I
On Tue, Feb 26, 2008 at 02:12:53PM -0800, Anthony Brock wrote:
# bzip2 -dc ../2.6.25-rc2-mm1.bz2 | patch
The next patch would create the file o2cb,
which already exists! Assume -R? [n]
That looks right - I'd double-check that the tree is what you think it
is. I'm in the habit of head
I recently upgraded some of my guest UML instances from and old kernel
version (2.6.20.6) to a recent version (2.6.24.2). However, I am now
experiencing strange behavior from various software packages following the
upgrade (I use Debian lenny). For example, my ssh daemon has started
crashing
-Original Message-
Just to make sure I understand, the patch posted above is for
kernel 2.6.23 and
it is a host patch, right. If I want to patch kernel 2.6.18 (the
kernel coming with
Debian stable) should I use a patch for 2.6.18, for example this one:
-Original Message-
DebianUM:~# mount -t vfat /dev/ubdc1 /mnt/pendrive
mount: special device /dev/ubdc1 does not exist
How can I create it???
There are several resources one the Internet that would tell you how to do
this. However, the short answer is something like the following
Since nobody else has replied, comments are inline below.
-Original Message-
I'm trying to run about 50 UML hosts on a dual-processor (each
dual-core) Opteron system, running 64-bit Ubuntu 6.06LTS .
In my experience, this is a LOT for one machine. Remember that each UML is
probably
kernel without success.
I would really like to eventually upgrade my guest kernels beyond
2.6.26.x. However, this issues with Tomcat is a show stopper. Any
ideas or suggestions?
Tony
Quoting Anthony Brock [EMAIL PROTECTED]:
I'm running Tomcat5 on a virtual server instance. I just tried
I'm running Tomcat5 on a virtual server instance. I just tried to upgrade
the UML kernel (and guest) to a 2.6.17.4 version. Previously the host was
running 2.6.16.9-skas3-v8.2 and the guest was running 2.6.17-rc6. Both host
and guest are Debian Etch distributions.
However, with the host running
-Original Message-
On Tuesday 30 May 2006 20:07, Brock, Anthony - NET wrote:
You need to create a separate COW file (probably based of the same
original image) for each instance. Your customizations will then be
written to the COW file while preserving the base image intact. This
On Sun, May 28, 2006 at 04:50:33PM -0700, Anthony Brock wrote:
I just tried to compile a new guest kernel using the
linux-2.6.17-rc5 kernel
source and encountered the following warnings.
WARNING: vmlinux - Section mismatch: reference to
.init.setup:__setup_nosmp
from .bss between
-Original Message-
I actually looked through these patches before asking:
http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.17-rc4
/patches.t
ar
I didn't see anything that appeared to address this. However, I'll try
applying these and test from there.
I tried these
I just tried to compile a new guest kernel using the linux-2.6.17-rc5 kernel
source and encountered the following warnings.
I can post the .config file if needed.
Tony
SYMLINK arch/um/include/sysdep
make[1]: `arch/um/sys-i386/user-offsets.s' is up to date.
CHK include/linux/version.h
On Wed, May 17, 2006 at 11:12:22AM -0600,
Rennie deGraaf [EMAIL PROTECTED] wrote
a message of 120 lines which said:
I'm trying to build a UML guest system based on Gentoo and the
2.6.16.16 kernel. It seems to work, except that it always hangs on
shutdown at the message * Deactivating
I'm in the process of setting up a new Debian box that needs a decent source
of entropy. So, I have downloaded and installed a relatively new UML kernel:
www:/usr/share/doc/rng-tools# uname -a
Linux www.myserver.com 2.6.16.5 #1 Fri Apr 14 11:44:51 PDT 2006 i686
GNU/Linux
I then downloaded and
On Thursday 30 March 2006 13:30, Blaisorblade wrote:
Sorry, forgot to finish. That patch keeps checking TMP,TMPDIR and
TEMP (don't
remember the order), but if none is set, it switches the default
from /tmp
to /dev/shm.
This makes sense. It does appear that the patch first checks the
Quoting Jeff Dike [EMAIL PROTECTED]:
On Wed, Mar 29, 2006 at 12:40:00AM +0200, Blaisorblade wrote:
Finally, I'd like to get devshm merged if there aren't problems with the
code.
That one needs to check if /dev/shm is present, and fall back to /tmp
if not.
Are you proposing that virtual
Quoting David Lang [EMAIL PROTECTED]:
I also get several thousand lines of error message like the following
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl
On Monday 06 March 2006 9:11, Blaisorblade wrote:
On Monday 27 February 2006 17:27, Anthony Brock wrote:
In the mean time, we've experienced a second crash with the
2.6.15.1-bs1 kernel. It looks to be very similar to the previous crash.
Only, in this case, I issued the command uml_mconsole www
Sorry for taking so long to get back on this. We've been busy with some
other issues. Some comments are inline below in addition to the output
from a new crash.
Quoting Jeff Dike [EMAIL PROTECTED]:
On Wed, Feb 15, 2006 at 01:09:33PM -0800, Anthony Brock wrote:
Also, this is x86_64, correct
Quoting Jeff Dike [EMAIL PROTECTED]:
On Wed, Feb 15, 2006 at 09:08:00AM -0800, Anthony Brock wrote:
Here is the output from the last two times your script ran on a development
DNS server. The script ran successfully until last night when it segment
faulted. Interesting enough, this happened
-Original Message-
From: Blaisorblade [mailto:[EMAIL PROTECTED]
Sent: Monday, February 13, 2006 6:13 AM
Subject: Re: [uml-user] Crash and stability problems with 2.6.15.3-bs2
Could you upgrade them to 2.6.15.3-bs1 - to verify that indeed
that's still
safe, too?
I've done this for
I recently downloaded and started using kernel 2.6.15.3 with the bs2 patches
from BlaisorBlade's website. Most of my instances continued to run as
normal, however I started experiencing outages on a couple of them this
morning. Specifically, two of the instances stopped responding to network
and
I don't think the attachment made it into the email. However, I am attaching
one that we've used with good success. It allows us to also specify a nice
level for the UML kernel in addition to the chroot-setuid.
Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Derek,
First, you don't need the ubd* devices on the host. They're useless in this
context. Second, you need to boot the UML instance by specifying the ubd
devices. For example, the following might be an acceptable permutation of
your command:
/root/uml/linux-2.6.12.3/linux
Quoting Blaisorblade [EMAIL PROTECTED]:
And I think that distributing usable root_fs images would be of great help...
(actually, there are other sources but the site has no link to them - plus I
don't like that much cherry-picking root_fs's from people I don't trust and
putting UML's approval
Quoting Jeff Dike [EMAIL PROTECTED]:
On Sun, Aug 07, 2005 at 03:57:48PM -0700, Anthony Brock wrote:
I've been encountering a freeze on shutdown with guest kernel
2.6.12-rc5-mm1. Today, I was busy with other things so I left it frozen for
a while. When I returned, I saw the following:
Turning
I've been encountering a freeze on shutdown with guest kernel
2.6.12-rc5-mm1. Today, I was busy with other things so I left it frozen for
a while. When I returned, I saw the following:
Turning off swap
BUG: soft lockup detected on CPU#0!
EIP: :[] CPU: 0 Not tainted EFLAGS:
I'm about to build a 2.6.13-rc2 kernel for testing as a host kernel.
I've patched it with the '-mm1' patches and the 'skas-2.6.12-v8.2'
patch. The later applied with a minor tweak to 'mm/Makefile'.
However, I'm now trying to build a configuration for the newer kernel.
Unfortunately, I'm not
is not set
#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
# CONFIG_GAMEPORT is not set
#
# Graphics support
*** END .config EXCERPT ***
Did I miss a patch or something?
Tony
Jeff Dike [EMAIL PROTECTED] 06/20/05 07:53AM
On Thu, Jun 16, 2005 at 03:36:24PM -0700, Anthony Brock wrote:
Second, I'm
Well, so far this seems to be running fine. However, I'm still seeing the load
average = 1 issue. This is a 2.6.12-rc6-mm1 host with your patches from this
morning running on a 2.6.11.7-skas3-v8 custom built host kernel.
I'll keep at eye on perform over the next few days.
Tony
Jeff Dike
for the skas3 patch in the host:
- /proc/mm...found
- PTRACE_FAULTINFO...found
- PTRACE_LDT...found
Checking PROT_EXEC mmap in /tmp...OK
I'll see if I can get a backtrace on this...
Tony
Jeff Dike [EMAIL PROTECTED] 06/16/05 03:13PM
On Thu, Jun 16, 2005 at 02:26:13PM -0700, Anthony Brock
Allocate another drive. Do something like the following on the master:
dd if=/dev/zero of=disk2.img bs=512M count=1
losetup /dev/loop0 ./disk2.img
mkfs -t ext2 /dev/loop0
losetup -d /dev/loop0
../linux-kernel . ubd1=./disk2.img .
Once the UML has been launched, mount the new drive in
these (and
a lot of other information) on the UML Wiki at:
http://uml.harlowhill.com/
http://uml.harlowhill.com/index.php/UMLRootFilesystems
Good luck. - Tony
-Original Message-
From: Dinesh Ahuja [mailto:[EMAIL PROTECTED]
Sent: Saturday, June 11, 2005 1:29 PM
To: Anthony Brock; User Mode Linux
I normally find it best to chroot myself in the loop-mount environment such
as:
mount -o loop /srv/vs/images/my_test.img /mnt
chroot /mnt /bin/sh
apt-get update
apt-get install .
Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
antoine
Sent:
Bill,
Have you updated the wiki to reflect this? You can find it at:
http://uml.harlowhill.com/index.php/UMLRootFilesystems
Tony
William Stearns [EMAIL PROTECTED] 06/05/05 10:34AM
Good afternoon, all,
I have a fedora core 3/i386 filesystem that seems to Work Well For
Me(tm). It's
Bill,
Have you updated the wiki to reflect this? You can find it at:
http://uml.harlowhill.com/index.php/UMLRootFilesystems
Tony
William Stearns [EMAIL PROTECTED] 06/05/05 10:34AM
Good afternoon, all,
I have a fedora core 3/i386 filesystem that seems to Work Well For
Me(tm). It's
: In function `setup_modinfo':
kernel/module.c:1387: error: `modinfo_attrs' undeclared (first use in this
function)
make[1]: *** [kernel/module.o] Error 1
make: *** [kernel] Error 2
Tony
Blaisorblade [EMAIL PROTECTED] 06/05/05 08:54AM
On Friday 03 June 2005 19:15, Anthony Brock wrote
In the event that something wierd happened to my guest binary, I've decide
to try recompiling again. However, I'm now seeing new (and old) compilation
errors with Jeff's tree. The steps were:
# tar -jxvf linux-2.6.12-rc5.tar.bz2
# cd linux-2.6.12-rc5/
# bzip2 -dc ../2.6.12-rc5-mm2.bz2 |patch -p1
-grading back to 2.6.11.11-bs5 to see if these still exist.
Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
Anthony Brock
Sent: Wednesday, June 01, 2005 10:06 AM
To: user-mode-linux-devel@lists.sourceforge.net; [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject
I'm now running two systems with Jeff's patches for pulling entropy from the
host's /dev/random. The first host I boot comes up fine (successfully loads
rngd). However, the second fails to load rngd. I 'm getting back a return code
of '1' from the daemon (the rng-source is misbehaving) after a
Blaisor,
Thanks! I've removed this patch while leaving everything else applied. The
kernel now compiles. I'm running it and will report back once I have a
backtrace. *sigh*
Tony
Blaisorblade [EMAIL PROTECTED] 05/31/05 04:32PM
On Wednesday 01 June 2005 01:01, Anthony Brock wrote
On Wed, Jun 01, 2005 at 10:09:50AM -0700, Anthony Brock wrote:
I'm now running two systems with Jeff's patches for pulling entropy
from the host's /dev/random. The first host I boot comes up fine
(successfully loads rngd). However, the second fails to load rngd. I
'm getting back a return code
?
Tony
Anthony Brock [EMAIL PROTECTED] 06/01/05 10:06AM
Blaisor,
Thanks! I've removed this patch while leaving everything else applied. The
kernel now compiles. I'm running it and will report back once I have a
backtrace. *sigh*
Tony
Blaisorblade [EMAIL PROTECTED] 05/31/05 04:32PM
I'm running into a problem applying the latest tarball from Jeff's tree. I've
downloaded the linux-2.6.12-rc5 source and applied the -mm1 patches with:
# bzip2 -dc ../2.6.12-rc5-mm1.bz2 |patch -p1
This applied without issue. I then tried to apply the tarball from Jeff's
patches:
# quilt push
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
Anthony Brock
Sent: Tuesday, May 17, 2005 10:58 AM
To: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] Kernel panic with 2.6.11.6
Any ideas concerning this crash? Would any more
Are you on the same network as the machine, or are you remote? If you're
remote, have you ensured that you're machines default route is still active
after you've reconfigured for bridging?
Tony
Celso González [EMAIL PROTECTED] 05/23/05 07:31AM
Hi people
I will try to explain my situation.
You will find several available images (some new, some not so new) listed on
the UML wiki:
http://uml.harlowhill.com/index.php/UMLRootFilesystems
Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
Gianni
Sent: Friday, May 20, 2005 9:32 AM
To:
, envp=0x0) at
arch/um/os-Linux/main.c:154
Blaisorblade [EMAIL PROTECTED] 05/10/05 03:19AM
On Monday 09 May 2005 18:40, Anthony Brock wrote:
First, I would appreciate it if someone can remind me of where to download
the '-mm' tree.
Second, I downloaded at attempted to compile 2.6.12-rc4
make: *** [init] Error 2
Pointers are appreciated! In the mean time, I'll see if I can figure out a
work-around.
Tony
Quoting Jeff Dike [EMAIL PROTECTED]:
On Wed, May 04, 2005 at 08:06:22AM -0700, Anthony Brock wrote:
Okay, I've now recompiled the host kernel to include debugging
information. I now
/ptrace.o] Error 1
make: *** [arch/um/sys-i386] Error 2
Any ideas?
Tony
Quoting Anthony Brock [EMAIL PROTECTED]:
First, I would appreciate it if someone can remind me of where to
download the
'-mm' tree.
Second, I downloaded at attempted to compile 2.6.12-rc4. Unfortunately, I'm
unable to compile
Paulo,
Have you followed the instructions on the wiki? They can be found at:
http://uml.harlowhill.com/index.php/UMLNetworking
Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
Paulo da Silva
Sent: Friday, May 06, 2005 2:39 PM
To:
in sig_handler ()
#18 0x0005 in ?? ()
#19 0x08297088 in init_thread_union ()
#20 0x40139b54 in ?? ()
#21 signal handler called
#22 0x0807d0cb in panic ()
(gdb) c
Continuing.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
The program no longer exists.
(gdb) quit
Anthony Brock [EMAIL
08297ce0: [08068d8e] new_thread_handler+0xce/0x120
08297ce4: [080690e0] start_kernel_proc+0x0/0x40
08297d40: [08068cc0] new_thread_handler+0x0/0x120
Quoting Jeff Dike [EMAIL PROTECTED]:
On Wed, Apr 27, 2005 at 01:33:24PM -0700, Anthony Brock wrote:
Kernel panic - not syncing: Kernel mode
Mike,
I believe it's the second hex number that must be even. Take a look at the
third paragraph on the following site:
http://www.erg.abdn.ac.uk/users/gorry/course/lan-pages/mac-vendor-codes.html
BTW, it wouldn't hurt to post the MAC address you're trying to use.
Tony
-Original
I have a 2.6.11.6 guest kernel (with the bs3 patches) running on a 2.6.10 host
kernel (with the SKAS3 v7 patches). The guest distribution is SuSE 9.1. For the
most part, this UML functions perfectly.
However, since upgrading the guest kernel from a 2.6.9 (bb4 patches) version,
the guest will
Given how often this has come up recently, should we add something about the
most stable or suggested kernel combinations to the wiki? Of course, this
would require someone to keep it updated as new releases come out... :)
Tony
[EMAIL PROTECTED] 04/26/05 01:56AM
Hello, i have to set-up a
Rick,
This is a security question in addition to a management question. For example,
assume that one of your guest instances is eventually compromised. Will it
matter if the attacker can freely access the file system of the other
instances? If so, then you should look at creating separate
Have you tried the command:
screen -ls
This, according to my man page, is the way to produce a list of screens.
Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Jack
Sent: Saturday, April 23, 2005 5:47 AM
To: user-mode-linux-user
Subject:
Blaisorblade [EMAIL PROTECTED] 04/14/05 02:16PM
On Tuesday 12 April 2005 19:42, Anthony Brock wrote:
The most advanced, stable and mature UML kernel (IMHO) is a 2.6.10 (or
newer) host kernel with v7 or newer of the SKAS patch. This host should be
able to run
almost any functional UML host
Fabio,
The most advanced, stable and mature UML kernel (IMHO) is a 2.6.10 (or newer)
host kernel with v7 or newer of the SKAS patch. This host should be
able to run
almost any functional UML host. You can download the SKAS patch from:
http://www.user-mode-linux.org/~blaisorblade/
However, this
You might also try some of the ones listed at on the wiki:
http://uml.harlowhill.com/index.php/UMLRootFilesystems
However, these are also somewhat dated. If you find others, please add them
to this site.
Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf
Paul Warren [EMAIL PROTECTED] 02/09/05 07:12AM
Right, but the memory is mmapped to that file. My understanding is
that
the memory will only be synced with the disk when either (a) msync
(or
munmap) gets called or (b) the kernel has nothing better to do.
I'm assuming that (a) doesn't
Quoting Anthony Brock [EMAIL PROTECTED]:
Quoting Christopher S. Aker [EMAIL PROTECTED]:
I've been experiencing erratic problems with bind 9.2.3 (bind-9.2.3-76) on
my SuSE 9.1 UML images. The host is running a stock SuSE 2.6.5 kernel
(2.6.5-7.111-smp) while the guest is running 2.6.7-1um
69 matches
Mail list logo
