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debian-user-digest Digest V2007 #2106

From: <debian-user-digest-request(at)lists.debian.org>
Date: Mon Aug 06 2007 - 12:23:14 EDT


Content-Type: text/plain

debian-user-digest Digest Volume 2007 : Issue 2106

Today's Topics: 

  Re: Debian hangs randomly             [ Douglas Allan Tutty  ]
  Re: [OT] Recommended Router Hardware  [ Douglas Allan Tutty  ]
  How to disable ipv6 tunneling         [ Marko Randjelovic  ]
  Re: Missing /dev/raw1394              [ Florian Kulzer  ]
  Re: Debian hangs randomly             [ Andrew Sackville-West 
  Re: [OT] Recommended Router Hardware  [ "Kelly Clowers" <kelly.clowers@gmai ]
  Filesystem corruption on md (Softwar  [ Sebastian Flothow <flothow@gip.com> ]



Date: Mon, 6 Aug 2007 09:21:30 -0400


From: Douglas Allan Tutty <dtutty@porchlight.ca>
To: debian-user@lists.debian.org


Subject: Re: Debian hangs randomly

Message-ID: <20070806132130.GB8098@titan>
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline


On Mon, Aug 06, 2007 at 12:27:44PM +0200, Jogito nit wrote:

> First of all, sorry about my english.

No problem.


> 
> I have a problem with my Debian, it hangs randomly. I have tried to
> change the driver of my ati, I, ve tried without 3D acceleration. I
> thougth that was the memory, so i changed it, but it continue hang.
> When it hangs i cant do anything, no mouse, no keyboard. I?ve tried
> Kubuntu and Knoppix too, and the same problem. I?ve looked the logs
> and i cant find anything strange. In windows i dont have this problem.
> Can someone help me please.
> 
> I ussually use Kubuntu, but I?ve tested Debian to see if the problem
> happend, and of course it happends. So its not a problem of Debian I
> know, but i dont know what can i do, because i dont want to use
> windows. I have tested debian 4 etch, with kernel 2.6.18.
> 
> About 4 years ago i used mandrake, and I had a problem like that
> because the micro heat to much and the kernel try to reduce the
> frequency, so it hang, but I?m not sure of this, I dont know if this
> can help.
> 
> My computer is :
> 
> P4 3,06 HT Ati radeon 9700 Sound blaster live.  1024mb memory.
Do you need help?X

It sounds like we need to narrow down the source of the troubles.  The
first big dividing line is between a text-based system and an Xwindow
based system.



I'll assume that when you boot your machine normally, it gives you an
Xwindow login.



Reboot the computer but select the single-user mode grub menu option.
If you happen to be using lilo, what you want is the linux s option
(the s is passed to init).  This tells init to boot into single-user
mode.  Debian will boot but instead of giving you X, you will be
prompted for the root password and given a shell.



Now disable the display manager (gdm, kdm, xdm) in /etc/rc2.d
See the README in that directory for instructions for how to do this.



This will mean that when you boot normally, you will get a command-line
login.  To start X from the command line, you type 'startx'.



#shutdown -r now



will cause the computer to boot nomally now (out of single-user mode)
and you should be in text mode.



Try doing some things and see if the computer hangs.  While I wouldn't
touch the package management incase of a hang in the middle, you can use
whatever other text-based apps you have.  Try an editor, lynx or links2
or mc if you have it.  Try the following to exersize the system a bit
(don't worry about 'permission denied', you're only trying to read
files and you don't care about the output.


Do you need more help?X

cd /;du


find /


find / |xargs md5sum



If it doesn't hang by the time it usually would, then we're on the right
track.  If it hangs, try to find out what it was doing.  Also, the first
boot after a hang, look at /var/log/syslog.



If it doesn't hang, you can run apt-get memtest86+.  This should add a
line to your grub menu whereby you can run memtest without an OS loaded.
You can also apt-get lynx and mc so you have some command-line apps to
use while you figure out why the box hangs.



Let us know how things go.  Good luck,



Doug.



Date: Mon, 6 Aug 2007 09:27:11 -0400


From: Douglas Allan Tutty <dtutty@porchlight.ca>
To: debian-user@lists.debian.org


Subject: Re: DNS problem on local network

Message-ID: <20070806132711.GC8098@titan>
Content-Type: text/plain; charset=us-ascii
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On Mon, Aug 06, 2007 at 12:39:56PM +0100, Adam Hardy wrote:

> I installed dnsmasq to run DNS and DHCP servers on my little home network 
> of 4 PCs and a couple of laptops, and everything was going fine, internet 
> browsing, ssh, ftp by IP address etc.
> 
> Now I am trying to get DNS to work for local machines but it won't 
> co-operate. I spent the last couple of hours pouring over HOWTOs and FAQs 
> trying to work out the problem but I'm stuck with a few errors messages 
> which I suspect point to something totally obvious to those in the know.
Can we help you?X

Please send us your /etc/hosts file.  Every box needs a minimal
/etc/hosts file with at least its own hostname (though I'v never used
DHCP).  The box running dnsmasq should have all the hosts on your
network listed in /etc/hosts for dnsmasq to read.



Doug.



Date: Mon, 6 Aug 2007 09:35:01 -0400


From: Douglas Allan Tutty <dtutty@porchlight.ca>
To: debian-user@lists.debian.org


Subject: Re: Transitioning to 64bit, is it worth it, and how

Message-ID: <20070806133501.GD8098@titan>
Content-Type: text/plain; charset=us-ascii
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On Mon, Aug 06, 2007 at 12:55:46PM +0100, Alan Chandler wrote:

> >On 8/4/07, Alan Chandler <alan@chandlerfamily.org.uk> wrote:
> >>I have a Core2 Duo on which I am running a 686 kernel (from Debian
> >>unstable).  It has 1GB of memory 
> >>
> >>I am wondering two things 
> >>
> >>a) What are the pros and cons in switching to 64 bit mode?
> >>        - Is it faster?
> 
> I am only responding to this particular message in the thread because my 
> computer is still not fully operational and this is the only way (at the 
> moment) to comment on this process. 

[snip many woes]



When you ran the installer, did you start from scratch?  Did you start
by removing your existing partitions?  I don't think you can reuse
a 32-bit software raid setup on 64-bit (don't know, never tried).



The only thing you can probably reuse is your /home, however, if /home
is on a raid or LVM partition, you may not be able to reuse it either.
If this is the case, at the beginning of the installer, choose a disk to
partition and tell it to ignore the partition table and start from
scratch.  If it doesn't let you do that either, restart the installer,
and go to the VC with a shell and 


Can't find what you're looking for?X

#dd if=/dev/zero of=/dev/[drive toclear] bs=512 count=1 



to clear the partition table.



Doug.



Date: Mon, 06 Aug 2007 08:39:56 -0500


From: Ron Johnson <ron.l.johnson@cox.net>
To: ML Debian-User <debian-user@lists.debian.org>
Subject: Re: Missing /dev/raw1394

Message-ID: <46B724AC.5000000@cox.net>
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On 08/06/07 08:06, Curt Howland wrote:

> On Monday 06 August 2007, debian-user-digest-request@lists.debian.org 
> was heard to say:
>>> Hi. Up to date Sid, 2.6.22
>>> Funny thing is, /dev/raw1394 doesn't exist.


> 
> Florian Kulzer <florian.kulzer+debian@icfo.es> recommended:
>> modprobe raw1394


> 
>> (This module does not seem to get loaded automatically for all

Don't know where to look next?X

>> hardware. I have no idea why that is or how to fix that.)


> 
> Interesting!
> 
> --------------
> # uname -a
> Linux desktop 2.6.22-1-686 #1 SMP Sun Jul 29 14:37:42 UTC 2007 i686 
> GNU/Linux
> # modprobe raw1394
> FATAL: Module raw1394 not found.
> --------------
> 
> In the /boot/config-2.6.22-1-686,
> --------------
> # IEEE 1394 (FireWire) support
> #
> CONFIG_FIREWIRE=m
> CONFIG_FIREWIRE_OHCI=m
> CONFIG_FIREWIRE_SBP2=m
> # CONFIG_IEEE1394 is not set
> --------------
> 
> The plot thickens! What else can I look for?

Look in /lib/modules/`uname -r`/kernel/drivers/ieee1394/




  •   --
Ron Johnson, Jr.
Jefferson LA  USA



Confused? Frustrated?X

Give a man a fish, and he eats for a day.
Hit him with a fish, and he goes away for good!


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Date: Mon, 6 Aug 2007 09:43:37 -0400


From: Douglas Allan Tutty <dtutty@porchlight.ca>
To: debian-user@lists.debian.org


Subject: Re: [OT] Recommended Router Hardware

Message-ID: <20070806134337.GE8098@titan>
Content-Type: text/plain; charset=us-ascii
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On Mon, Aug 06, 2007 at 04:07:00PM +0200, Samuel B?chler wrote:

> Hi Everyone
> 
> I want to improve my home network. I have got a Laptop and an old 
> desktop machine. I want to use the old desktop for server services such 
> as web- and mail-sever.
> I am connected to the ISP using a cable modem.
> 
> Question A:
> Can someone recommend a router with the following properties:
> -NAT

> -port forwarding

Use your old desktop machine, just give it a second NIC to go to the
cable modem.  Then install shorewall and read the shorewall-doc.  I
should clarify this a bit: how old is the desktop machine?  Debian now
needs at least a 486 and the installer needs 48 MB ram.  If the desktop
is a 386 or has less ram, then you'll need either NetBSD or OpenBSD (24
MB ram).


> 
> Question B:
> Is it possible to install FREESCO on top of a commercial router 
> (hardware, e.g. linksys, netgear etc.)

What's FREESCO?


Call Pantek today for Open Source Technical Support at 1-877-546-8934 - 24/7/365X
> 
> Question C:
> Any recommendations for Guides, HOWTOs about networking.
> 

debian-reference, linux-HOWTOs, shorewall-doc, harden-doc, man pages
(all available as debian packages).



> Question D:
> Are there any mailing lists for conceptional discussions about Computers?
> 

If those computers run debian, this is it.



What you're wanting to do is something most of us do or have done.  Once
you get this router/firewall set up, you can put things like dnsmasq on
it.  



Enjoy,



Doug.


Do you need help?X

Date: Mon, 6 Aug 2007 14:39:24 +0100


From: "Adam Gray" <adam@bandstand.org.uk>
To: debian-user@lists.debian.org


Subject: Re: Re: Syntax error in bitops.h:244

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Wayne Topa <linuxone@intergate.com> wrote:

> ISTR that hotplug was removed, when udev was installed, because udev
> now includes the hotplug feature.
>


> Yep, I guess it does....
>


> apt-cache show udev
> Description: /dev/ and hotplug management daemon
> udev is a daemon which dynamically creates and removes device nodes
> from /dev/, handles hotplug events and loads drivers at boot time.
>


> Might that be your  problem?


>

> Wayne

Ah, I remember now; my main problem with udev was that it rendered my
USB mouse completely useless. I think that's why I went back to
hotplug...!



Any ideas on this syntax error thing though? I guess a version
conflict between gcc (3.3.5) and whichever package provides
asm/bitops.h?



A


-- 
Adam Gray
"Life + self-doubt = peace"
        -- Jan Buttinger


Date: Mon, 06 Aug 2007 16:57:30 +0200
From: Marko Randjelovic <marel@sbb.co.yu>
To: debian-user <debian-user@lists.debian.org>
Subject: How to disable ipv6 tunneling
Message-ID: <46B736DA.2060208@sbb.co.yu>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit

I run Etch and at every boot, as message on the screen states, it
activates some "ipv6 over ipv4 tunneling driver" and it lasts several
seconds. I don't need ipv6. How can it be disabled?



Date: Mon, 6 Aug 2007 16:47:24 +0200
From: Florian Kulzer <florian.kulzer+debian@icfo.es>
To: debian-user@lists.debian.org
Subject: Re: Missing /dev/raw1394
Message-ID: <20070806144724.GA23914@localhost>
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Mon, Aug 06, 2007 at 09:06:04 -0400, Curt Howland wrote:

> Earlier, Curt Howland was heard to say:
> > > Hi. Up to date Sid, 2.6.22
> > > Funny thing is, /dev/raw1394 doesn't exist.
> 
> Florian Kulzer recommended:
> > modprobe raw1394
> >
> > (This module does not seem to get loaded automatically for all
> > hardware. I have no idea why that is or how to fix that.)
> 
> Interesting!
> 
> - --------------
> # uname -a
> Linux desktop 2.6.22-1-686 #1 SMP Sun Jul 29 14:37:42 UTC 2007 i686 
> GNU/Linux
> # modprobe raw1394
> FATAL: Module raw1394 not found.
> - --------------
> 
> In the /boot/config-2.6.22-1-686,
> - --------------
> # IEEE 1394 (FireWire) support
> #
> CONFIG_FIREWIRE=m
> CONFIG_FIREWIRE_OHCI=m
> CONFIG_FIREWIRE_SBP2=m
> # CONFIG_IEEE1394 is not set
> - --------------
> 
> The plot thickens! What else can I look for?


I have these configs for my custom 2.6.22 kernel (compiled from the
standard Debian sources):

$ grep IEEE1394 /boot/config-$(uname -r)
CONFIG_IEEE1394=m
# CONFIG_IEEE1394_VERBOSEDEBUG is not set
# CONFIG_IEEE1394_PCILYNX is not set
CONFIG_IEEE1394_OHCI1394=m
CONFIG_IEEE1394_VIDEO1394=m
CONFIG_IEEE1394_SBP2=m
# CONFIG_IEEE1394_SBP2_PHYS_DMA is not set
CONFIG_IEEE1394_ETH1394_ROM_ENTRY=y
CONFIG_IEEE1394_ETH1394=m
CONFIG_IEEE1394_DV1394=m
CONFIG_IEEE1394_RAWIO=m

The RAWIO is the one responsible for the raw1394 module. It looks like
you have to compile your own kernel to get it. The raw1394 replaces the
now unsupported dv1394 driver (according to the kernel configuration
help).

-- 
Regards,            | http://users.icfo.es/Florian.Kulzer
          Florian   |



Date: Mon, 6 Aug 2007 08:39:59 -0700
From: Andrew Sackville-West <andrew@farwestbilliards.com>
To: debian-user@lists.debian.org
Subject: Re: How to disable ipv6 tunneling
Message-ID: <20070806153959.GG23207@localhost.localdomain>
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On Mon, Aug 06, 2007 at 04:57:30PM +0200, Marko Randjelovic wrote:

> I run Etch and at every boot, as message on the screen states, it
> activates some "ipv6 over ipv4 tunneling driver" and it lasts several
> seconds. I don't need ipv6. How can it be disabled?


I think you can blacklist the ipv6 module.

A

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Do you need more help?X

Date: Mon, 6 Aug 2007 08:45:21 -0700
From: Andrew Sackville-West <andrew@farwestbilliards.com>
To: debian-user@lists.debian.org
Subject: Re: [OT] Recommended Router Hardware
Message-ID: <20070806154521.GH23207@localhost.localdomain>
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On Mon, Aug 06, 2007 at 07:30:22PM +0200, Samuel B=E4chler wrote:
>>> > I want to improve my home network. I have got a Laptop and an old >=
=20
>>> desktop machine. I want to use the old desktop for server services such=
 >=20
>>> as web- and mail-sever.
>>> > I am connected to the ISP using a cable modem.
>>> > > Question A:
>>> > Can someone recommend a router with the following properties:
>>> > -NAT
>>> > -port forwarding
>> Use your old desktop machine, just give it a second NIC to go to the
>> cable modem.  Then install shorewall and read the shorewall-doc.  I
>> should clarify this a bit: how old is the desktop machine?  Debian now
>> needs at least a 486 and the installer needs 48 MB ram.  If the desktop
>> is a 386 or has less ram, then you'll need either NetBSD or OpenBSD (24
>> MB ram).
>

> Well - it isn't that old. It is a Compaq Desktop EN, Pentium III with abo=

ut=20

> 500MB RAM. But there is only one Ethernet-Connection which - I guess - ca=

n=20

> be solved by using a Hub or Switch, isn't it?


no. to use a desktop machine as a router, you need two network
connections: one for the local network to attach to and one for the
internet at large. The computer then routes packets appropriately and
functions as a firewall. Its very simple to setup and if you are
already planning to have the machine on all the time as a fileserver,
certainly makes sense. There are some possible security issues because
in theory a process on the file server could be compromised and bring
down your whole network, but that is the case with any router. Having
the machine function as a file server means there are more processes
running than on just a dedicated firewall resulting in the possibility
of more vulnerabilities. I happen to think the risk is pretty minimal
with just a little care.=20

Okay, yes, you would need a switch on the local side of the
machine...=20

>

> I now got a Linksys WRT54GL to which Eric Reymond refers to in "Linksys=

=20

> Blue Box Router HOWTO"[2].


That completely eliminates the need to do anything to the
fileserver. Just up it behind the firewall/router and be done with
it.=20

A

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Date: Mon, 06 Aug 2007 19:30:22 +0200
From: =?UTF-8?B?U2FtdWVsIELDpGNobGVy?= <linux@boeser.ch>
To: debian-user@lists.debian.org
Subject: Re: [OT] Recommended Router Hardware
Message-ID: <46B75AAE.7050701@boeser.ch>
Content-Type: text/plain; charset=UTF-8; format=flowed
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>> > I want to improve my home network. I have got a Laptop and an old 
>> > desktop machine. I want to use the old desktop for server services such 
>> > as web- and mail-sever.
>> > I am connected to the ISP using a cable modem.
>> > 
>> > Question A:
>> > Can someone recommend a router with the following properties:
>> > -NAT
>> > -port forwarding

> 
> Use your old desktop machine, just give it a second NIC to go to the
> cable modem.  Then install shorewall and read the shorewall-doc.  I
> should clarify this a bit: how old is the desktop machine?  Debian now
> needs at least a 486 and the installer needs 48 MB ram.  If the desktop
> is a 386 or has less ram, then you'll need either NetBSD or OpenBSD (24
> MB ram).


Well - it isn't that old. It is a Compaq Desktop EN, Pentium III with 
about 500MB RAM. But there is only one Ethernet-Connection which - I 
guess - can be solved by using a Hub or Switch, isn't it?

I now got a Linksys WRT54GL to which Eric Reymond refers to in "Linksys 
Blue Box Router HOWTO"[2].

>> Question B:
>> > Is it possible to install FREESCO on top of a commercial router 
>> > (hardware, e.g. linksys, netgear etc.)

> 
> What's FREESCO?


FREESCO is a NAT/firewall router/server based on Linux and runs on a 
single 1.44MB floppy[1].

S.


[1] http://sourceforge.net/projects/freesco
[2] http://www.tldp.org/HOWTO/Linksys-Blue-Box-Router-HOWTO/index.html

Date: Mon, 6 Aug 2007 17:51:28 +0200
From: Hans Gubitz <gubitz@netcologne.de>
To: debian-user@lists.debian.org
Subject: eclipse, amd64, lenny
Message-ID: <20070806155128.GA4016@redwitz79.de>
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Hi,

eclipse worked well on a new amd64-machine with lenny (About two
months ago).

Now: after some upgrades of lenny, eclipse doesn't start any longer,
just eats both processors, all ram and swap and the machine dies.

Any hints?

Hans
--=20
Hans Gubitz <gubitz@netcologne.de>


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Date: Mon, 6 Aug 2007 08:51:51 -0700
From: Andrew Sackville-West <andrew@farwestbilliards.com>
To: debian-user@lists.debian.org
Subject: Re: Debian hangs randomly
Message-ID: <20070806155151.GI23207@localhost.localdomain>
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On Mon, Aug 06, 2007 at 12:27:44PM +0200, Jogito nit wrote:

> First of all, sorry about my english.

>=20

> I have a problem with my Debian, it hangs randomly. I have tried to change
> the driver of my ati, I, ve tried without 3D acceleration. I thougth that
> was the memory, so i changed it, but it continue hang. When it hangs i ca=

nt

> do anything, no mouse, no keyboard. I=B4ve tried Kubuntu and Knoppix too,=

 and

> the same problem. I=B4ve looked the logs and i cant find anything strange=

=2E In

> windows i dont have this problem. Can someone help me please.


windows on the same machine causes no problems? that would pretty
effectively rule out hardware issues, though its still
possible. Follow Doug's advice and try working in a command line for a
while to see if you can trigger the problem.=20

Also, just as a precaution, try systematically removing hardware to
see if perhaps a specific hardware driver is causing the problem.=20

My advice is to take careful detailed notes about what you are
doing. Often the problem is something simple that is overlooked and
good notes can help in this case. My example is when I tried to
diagnose a system that wouldn't boot... I tried everything: new
motherboards, new processor, new memory, everything except the video
card... which of course was the thing that had failed...

A

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Date: Mon, 6 Aug 2007 08:55:37 -0700
From: Andrew Sackville-West <andrew@farwestbilliards.com>
To: debian-user@lists.debian.org
Subject: Re: Public PC
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On Sun, Aug 05, 2007 at 08:58:30PM -0400, Douglas Allan Tutty wrote:

> On Sun, Aug 05, 2007 at 03:06:10PM -0500, Dave Walker wrote:
> > I hope to place a PC running Etch in our small (tiny, actually)
> > airport building for use by pilots. The PC will be used to access
> > perhaps 10 web sites (plus or minus) over a DSL connection and to run
> > a few utilities to show GMT and a calculator and maybe a few
> > additional applications. The box will also serve as a real-time data
> > collection platform and web server for a local weather observing
> > system, so I want to prevent it from being re-booted.
> >=20

>=20

> Be very careful.  These are two very different applications to put on
> one box.  You don't want the weather reports to stop going out if the
> desktop freezes the box.  A box that runs X, is almost by definition
> more prone to needing to reboot than one that doesn't.  Ditto if you use
> a Desktop environment instead of a simple window manager. =20

>=20

> If you really need it to be one box, here's what I would suggest:

>=20

> Set up the server stuff first.

>=20

> Setup a chroot for the desktop stuff, one that gets copied when used.


maybe this is a good use for xen. Run the desktop stuff, whatever you
decide in a xen dom-u to segregate it from the main server.=20

A

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Date: Mon, 6 Aug 2007 08:55:43 -0700
From: "Kelly Clowers" <kelly.clowers@gmail.com>
To: debian-user@lists.debian.org
Subject: Re: [OT] Recommended Router Hardware
Message-ID: <1840f6970708060855p3ba5ce56l77bc27f3fc7c197@mail.gmail.com>
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Date: Mon, 06 Aug 2007 17:59:22 +0200
From: Sebastian Flothow <flothow@gip.com>
To: debian-user@lists.debian.org
Subject: Filesystem corruption on md (Software) RAID
Message-ID: <46B7455A.3080406@gip.com>
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Hi,

I'm getting massive filesystem corruption on an md RAID comprising 4
SATA disks. I tried ext3, xfs and reiserfs on RAID level 5 as well as
ext3 on RAID level 1 (using only 2 disks); all can be crashed reliably
by running bonnie++ for just a few minutes. In the case of ext3, I
usually get dmesg output like this:

[...]
md0: rw=1, want=1482184800, limit=490223232
attempt to access beyond end of device
md0: rw=1, want=1482184800, limit=490223232
attempt to access beyond end of device
md0: rw=1, want=1482184800, limit=490223232
Buffer I/O error on device md0, logical block 185273099
lost page write due to I/O error on md0
Aborting journal on device md0.
EXT3-fs error (device md0) in ext3_reserve_inode_write: Journal has aborted
EXT3-fs error (device md0) in ext3_dirty_inode: Journal has aborted
EXT3-fs error (device md0) in ext3_new_blocks: Journal has aborted
ext3_abort called.
EXT3-fs error (device md0): ext3_journal_start_sb: Detected aborted journal
Remounting filesystem read-only

The filesystems are impossible to repair afterwards, e2fsck in
particular will run for ages, and eventually segfault.

By contrast, ext3 directly on the physical disk partition works fine and
withstood days of continouus bonnieing.

This is with Etch, kernel 2.6.18-4-686-bigmem. FWIW, the machine used to
run Sarge with a 2.4 kernel, where the RAID worked fine.

Now, it seems quite unlikely that RAID is completely broken in 2.6, so I
suppose it might be related to the hardware: it's a Pentium 4 @ 2.8 GHz,
1.5 GiB RAM, the SATA Controller is a Promise S150 SX4 using the
sata_sx4 kernel module.

Any ideas on this?

End of debian-user-digest Digest V2007 Issue #2106
**************************************************

Received on Mon Aug  6 12:19:48 2007

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