Linux-Misc Digest #888, Volume #26 Mon, 22 Jan 01 09:13:02 EST
Contents:
Re: Can filesystems be made crash proof? (Thaddeus L Olczyk)
Problme with Amanda: Port Write Fails ([EMAIL PROTECTED])
Re: Protect yourself! I got hacked by the Ramen worm (Thaddeus L Olczyk)
bzip, rpm files in Windows (Thaddeus L Olczyk)
Re: bad printing quality (Sebastian Hans)
Re: Protect yourself! I got hacked by the Ramen worm (Robert Krawitz)
SMC ultra Elite (WD8013) & RH 7.0 (Christoph Kukulies)
Re: Understanding how Linux works (Lew Pitcher)
Sylpheed mail & spool (T S)
Re: Can filesystems be made crash proof? ([EMAIL PROTECTED])
Re: dmesg (Marc Sobol)
ERROR: in.inetd[224]: 19000/tcp: bind: Address already in use ("Danny Bishop")
Re: Kernel panic: Attempted to kill the idle task! (Jean-David Beyer)
Re: What distribution seems the most popular and easy to work with? (Johan Kullstam)
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Thaddeus L Olczyk)
Subject: Re: Can filesystems be made crash proof?
Date: Mon, 22 Jan 2001 12:17:16 GMT
Reply-To: [EMAIL PROTECTED]
On Mon, 22 Jan 2001 04:06:00 -0800, %20@%20.com wrote:
>I need to test some potentially hazardous configurations for the X Window System.
>The test configurations will almost certainly clobber the system so thoroughly
>that it will have to be hard reset with no way of shutting down. The testing
>has to do with finding the linear address of the framebuffer used by my video
>adaptor (I cannot make do with only 256 colors!).
>
>Is there a way to protect the root filesystem and other filesystems on the HDD
>from being damaged when they are not cleanly unmounted? Maybe like mounting
>everything read only? Is it possible to disable write caching to the HDD?
>
>I'm using Debian 2.2 (Potato).
Ju8st before you engage in risky behaviour call sync from the
commandline. It won't gaurantee you safety, but it will help quite a
bit.
------------------------------
From: [EMAIL PROTECTED]
Subject: Problme with Amanda: Port Write Fails
Date: Mon, 22 Jan 2001 12:09:40 GMT
We've a problem with Amanda. We use A. to backup our Comp. over the
network. Most of our dumps work with File-Write before sending data to
the tape. Our last dumps tries to make use of Port-Write (we don't know
where this is set or can be changed - help would be usefull) This
Port-Write Fails with the message: taper port open: "Network is
unreachable." It starts with port 2276 and increases the port number
with each dump.
Does anyone know what is going wrong here ??
(We're using a SUSE 6.4 if this info helps )
Thanx
M, Pospiech
Sent via Deja.com
http://www.deja.com/
------------------------------
From: [EMAIL PROTECTED] (Thaddeus L Olczyk)
Crossposted-To: linux.redhat.install,comp.os.linux.setup,linux.redhat.misc,alt.os.linux
Subject: Re: Protect yourself! I got hacked by the Ramen worm
Date: Mon, 22 Jan 2001 12:22:32 GMT
Reply-To: [EMAIL PROTECTED]
On Mon, 22 Jan 2001 04:59:23 GMT, David <[EMAIL PROTECTED]>
wrote:
>A couple more "Redmond 7.0"
>releases and I will probably be switching too.ey. Don't trash Redmond Linux.
They make a very good distro, even if it not that well known.
------------------------------
From: [EMAIL PROTECTED] (Thaddeus L Olczyk)
Subject: bzip, rpm files in Windows
Date: Mon, 22 Jan 2001 12:24:25 GMT
Reply-To: [EMAIL PROTECTED]
OK. Sorry to bring up "the other platform", but since
bzip and rpm are Linux tools I feel this forum is appropriate.
Are there any tools out there that will allow me to view bzip
and rpm files on Windows, similar to WinZip?
------------------------------
From: Sebastian Hans <[EMAIL PROTECTED]>
Subject: Re: bad printing quality
Date: Mon, 22 Jan 2001 13:57:18 +0100
[EMAIL PROTECTED] wrote:
>
> Hi,
>
> I have a printing problem with Suse 7.0 distro. When I want to print a
> picture, the generated postscript file is in a very bad quality. Very low
> resolution and maybe 16 different colors, and this is not enough :-). The
> printer resoltion is not the problem (I tried it with 720x720 as with
> 1440x720, nearly the same results). So my question is: where can I change the
> quality of the generated postscript file? As far as I undestood the Linux
> printing concept, the file is send to a2ps. There it will be converted to an
> .ps file, then it is send to gs, to change it to the appropriate printer
> language. After this, lpr sends it to the printer. Is this correct?
I tried printing images some time ago using xv and it said the pic's
resoltuion was 72x72dpi. It printed pics interpreting 1 pixel as equal
to 1 dot.
Maybe that's the problem.
seb
--
/ sebastian seb hans \ www.crosswinds.net/~sebh / attention this msg \
| student of comp sci \ yes is no and no is ns / will destroy itself |
\ techn univ of munich \ [EMAIL PROTECTED] / in one second .. rip /
------------------------------
From: Robert Krawitz <[EMAIL PROTECTED]>
Crossposted-To: linux.redhat.install,comp.os.linux.setup,linux.redhat.misc,alt.os.linux
Subject: Re: Protect yourself! I got hacked by the Ramen worm
Date: 22 Jan 2001 08:00:31 -0500
[EMAIL PROTECTED] (Bill Unruh) writes:
> ????? This is totally wrong. Redhat or Mandrake or whoever do NOT keep
> their iso packages up to date. Those packages are the same as they were
> 12 months ago when 7.0 was released. It has all of the bugs and security
> holes that it had when released. You MUST do security updates
> immediately after you install the OS.
> Why do they not update their isos? Who knows.
Silently updating a software release is simply going to cause more
confusion, because then people don't really know what they have. If
you have a CD or an ISO image called "Red Hat 7.0", in that case, you
have no idea what, if any, bugs have been fixed, what new bugs may
have been introduced, what patches will work and what ones won't, and
so on. Much better to keep the release (bugs and all) stable, and
then immediately install patches.
--
Robert Krawitz <[EMAIL PROTECTED]> http://www.tiac.net/users/rlk/
Tall Clubs International -- http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail [EMAIL PROTECTED]
Project lead for The Gimp Print -- http://gimp-print.sourceforge.net
"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton
------------------------------
From: Christoph Kukulies <[EMAIL PROTECTED]>
Subject: SMC ultra Elite (WD8013) & RH 7.0
Date: 22 Jan 2001 12:58:33 GMT
I'm trying to install a network on a Redhat 7.0 system.
During installation the network card wasn't recognized because it is not at a
standard address. (irq 11, io 0x200).
I have /etc/modules.conf:
alias wd0 eth0
options wd io=0x200 irq=11 mem=0xcc000
modprobe wd
wd.c:v1.10 9/23/94 Donald Becker ...
eth0: wd80x3 at 0x200, 00 00 C0 B7 XX XX WD8013, IRQ 11, shared memory
at0xcc000-0xccfff
ifup ifcfg-eth0
ifconfig lists the correct interface address (IP), broadcast and
netmask.
Interrupt: 11 Base Address: 0x210 (?) Memory : cc000-d0000
netstat -rn:
Destination Gateway Genmask Flags MSS Window irtt Iface
137.xxx.yyy.zzz 0.0.0.0 255.255.255.0 U 0 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 137.xxx.yyy.1 0.0.0.0 UG 0 0 0 eth0
I cannot ping hosts on the network (destination host unreachable)
and I cannot reach the machine.
Ideas that come to mind: 8 bit vs. 16 bit card (it's a 16 bit card)
BNC is enabled (I can alternatively boot from a FreeBSD disk in the
same machine and everything works)
Some probe could mess the card?
The machine is slow (486, VLB) so building a kernel is no fun.
--
Chris Christoph P. U. Kukulies [EMAIL PROTECTED]
--
Chris Christoph P. U. Kukulies [EMAIL PROTECTED]
------------------------------
From: [EMAIL PROTECTED] (Lew Pitcher)
Subject: Re: Understanding how Linux works
Reply-To: [EMAIL PROTECTED]
Date: Mon, 22 Jan 2001 13:01:41 GMT
On Sat, 20 Jan 2001 17:39:59 GMT, Federico Bravo <[EMAIL PROTECTED]>
wrote:
>Hi everybody. I'd like to know something of how Linux works, starting
>from the surface till its internal components. Can anyone suggest
>pubblications, either printed or online.
>Thanks, Federico.
Although it is not specific to Linux, I'd suggest that you read
"Operating Systems: Design and Implementation" by Tanenbaum and
Woodhull. This is a college/university text used to teach the
internals of Unix systems, using a Unix-like OS called Minix as a
working example. It is an excellent resource for learning how and why
Unix (and thus Linux) does things internally. Subjects covered include
the Unix file system (inodes, directories, files, hardlinks,
softlinks, etc.), the Unix process model (fork(), exec(),
process-table, etc.) and the various Unix utilities.
On the Linux side, there are a number of books published by O'Reilly
and Associates that cover both Linux and Unix. Check your local
bookstore's Linux section, or keyword Linux at a book etailer.
Lew Pitcher
Information Technology Consultant
Toronto Dominion Bank Financial Group
([EMAIL PROTECTED])
(Opinions expressed are my own, not my employer's.)
------------------------------
From: T S <[EMAIL PROTECTED]>
Subject: Sylpheed mail & spool
Date: Mon, 22 Jan 2001 08:39:39 +0000
I am having a lot of trouble getting the Sylpheed mail program (0.4.51
running on KDE2 on Mandrake 7.2) to read my mail spool. I have configured
a an account with the "Server information" set to "Protocol: None (local)".
When fetchmail gets mail and Korn says I now have x messages. I launch
Sylpheed and when it checks, it doesn't do anything. The only way I have
gotten Sylpheed to get the spool is to use the "Local spool: Incorporate
from spool" setting under "Common Preferences".
Isn't this redundant? Should not just setting "None (local)" on the
account preferences be enough?
Is anything wrong, or is it just me?
[EMAIL PROTECTED]
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Can filesystems be made crash proof?
Date: Mon, 22 Jan 2001 13:50:37 GMT
%20@%20.com writes:
> I need to test some potentially hazardous configurations for the X
> Window System. The test configurations will almost certainly
> clobber the system so thoroughly that it will have to be hard reset
> with no way of shutting down. The testing has to do with finding the
> linear address of the framebuffer used by my video adaptor (I cannot
> make do with only 256 colors!).
> Is there a way to protect the root filesystem and other filesystems
> on the HDD from being damaged when they are not cleanly unmounted?
> Maybe like mounting everything read only? Is it possible to disable
> write caching to the HDD?
Several things should be helpful:
=> Unmount everything you can get away with unmounting.
=> Mount in read-only mode everything you can get away with mounting
read-only.
=> What you have mounted, mount in "sync" mode, so that updates are
most likely to get synchronized.
=> If you're fiddling heavily with /etc/X11R6, but with little/nothing
else, then you might want to mount as much else as you can
read-only, and then mount /etc/X11R6 as its own partition, so that
corruptions would be limited to it.
=> Set up a script that backs up what's on /etc/X11R6 to another
partition out there somewhere, mounting before and unmounting
afterwards, so that the duplicate isn't mounted when you run it.
=> You might want to look into ext3 or ReiserFS, which try to recover
a little more gracefully from such outages.
Combine a few of these techniques, and you should have a system that
is fairly resistant to corruption...
--
(concatenate 'string "aa454" "@freenet.carleton.ca")
http://vip.hyperusa.com/~cbbrowne/finances.html
"Parentheses? What parentheses? I haven't noticed any parentheses
since my first month of Lisp programming. I like to ask people who
complain about parentheses in Lisp if they are bothered by all the
spaces between words in a newspaper..."
-- Kenny Tilton <[EMAIL PROTECTED]>
------------------------------
From: Marc Sobol <[EMAIL PROTECTED]>
Subject: Re: dmesg
Date: Mon, 22 Jan 2001 14:59:29 +0100
Harry wrote:
> Can anyone point me to a document that describes the linux boot
> process in detail (ie a work through the lines of dmesg, I suppose)?
>
> Many thanks
>
> Harry
http://www.linuxdoc.org/HOWTO/From-PowerUp-To-Bash-Prompt-HOWTO.html
------------------------------
From: "Danny Bishop" <[EMAIL PROTECTED]>
Subject: ERROR: in.inetd[224]: 19000/tcp: bind: Address already in use
Date: Mon, 22 Jan 2001 07:17:58 -0600
Can anyone tell me what might be causing this error?
"(date) (time) (machine) in.inetd[224]: 19000/tcp: bind: Address already in
use"
Thanks!
------------------------------
From: Jean-David Beyer <[EMAIL PROTECTED]>
Subject: Re: Kernel panic: Attempted to kill the idle task!
Date: Mon, 22 Jan 2001 09:07:04 -0500
"Peter T. Breuer" wrote:
>
> Jean-David Beyer <[EMAIL PROTECTED]> wrote:
> > It really depends on what is wrong with the memory. If it is
> > sufficiently pattern-sensitive, it might appear to be very specific
> > (misleadingly so). What if the bad memory were right where the modem
> > driver code is. And that may be a module and work just fine when loaded
> > any other place in real address space? (In this case, it does not look
> > that way: the modem is not in /etc/conf.modules).
>
> >> > If you're crashing the same
> >> > place, that's a pretty good hint that memory isn't at fault.
>
> Indeed, it's a cert. It's sounds more like a hardware problem with an
> IRQ conflict (internal modem? Ethernet card?). Or it could be a bad ISA
> bus (modem or nic on ISA?).
>
I am pretty sure it is a hardware problem. Not likely an IRQ conflict.
Internal modem (not on motherboard). Ethernet card (not on motherboard).
Does not happen often. I am now up to almost a week without a problem
from this, so it is going to be quite difficult to tell if I do fix it.
The modem and the NIC both have APC surge protectors on them and have
never been connected without them. The machine goes through an APC
Smart-UPS UPS that has all manner of surge protection in it as well.
I doubt IRQ conflict. For one thing, this is a recent problem, and I
doubt the IRQs have moved around after remaining the same for about 10
months. I am almost certain I told the BIOS that my OS is not PNP-aware
(last March, I believe).
valinux:jdbeyer[~/stocks/setup]$ cat /proc/interrupts
CPU0 CPU1
0: 17993603 40864885 IO-APIC-edge timer
1: 69905 215673 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
3: 7730960 11836510 IO-APIC-edge serial
4: 985148 2891004 IO-APIC-edge serial
8: 2 3 IO-APIC-edge rtc
12: 3590909 5682535 IO-APIC-edge PS/2 Mouse
13: 1 0 XT-PIC fpu
14: 4 0 IO-APIC-edge ide0
16: 6865533 7257061 IO-APIC-level sym53c8xx
17: 606766 616053 IO-APIC-level eth0
18: 1600922 1733245 IO-APIC-level sym53c8xx
NMI: 0
ERR: 0
valinux:jdbeyer[~/stocks/setup]$
Printer is IRQ7, not on this list. Is on parallel port, but parallel
port driver is loadable module.
valinux:jdbeyer[~/stocks/setup]$ cat /proc/pci
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: Intel 440BX - 82443BX Host (rev 3).
Medium devsel. Master Capable. Latency=64.
Prefetchable 32 bit memory at 0xf8000000 [0xf8000008].
Bus 0, device 1, function 0:
PCI bridge: Intel 440BX - 82443BX AGP (rev 3).
Medium devsel. Master Capable. Latency=64. Min Gnt=136.
Bus 0, device 7, function 0:
ISA bridge: Intel 82371AB PIIX4 ISA (rev 2).
Medium devsel. Fast back-to-back capable. Master Capable. No
bursts.
Bus 0, device 7, function 1:
IDE interface: Intel 82371AB PIIX4 IDE (rev 1).
Medium devsel. Fast back-to-back capable. Master Capable.
Latency=64.
I/O at 0xffa0 [0xffa1].
Bus 0, device 7, function 2:
USB Controller: Intel 82371AB PIIX4 USB (rev 1).
Medium devsel. Fast back-to-back capable. IRQ 19. Master
Capable. Latency=64.
I/O at 0xef80 [0xef81].
Bus 0, device 7, function 3:
Bridge: Intel 82371AB PIIX4 ACPI (rev 2).
Medium devsel. Fast back-to-back capable.
Bus 0, device 16, function 0:
SCSI storage controller: NCR 53c895 (rev 2).
Medium devsel. IRQ 16. Master Capable. Latency=72. Min
Gnt=30.Max Lat=64.
I/O at 0xe800 [0xe801].
Non-prefetchable 32 bit memory at 0xfebfff00 [0xfebfff00].
Non-prefetchable 32 bit memory at 0xfebfe000 [0xfebfe000].
Bus 0, device 17, function 0:
Ethernet controller: Intel 82557 (rev 8).
Medium devsel. Fast back-to-back capable. IRQ 17. Master
Capable. Latency=64. Min Gnt=8.Max Lat=56.
Non-prefetchable 32 bit memory at 0xfebfd000 [0xfebfd000].
I/O at 0xef00 [0xef01].
Non-prefetchable 32 bit memory at 0xfea00000 [0xfea00000].
Bus 0, device 18, function 0:
SCSI storage controller: NCR 53c810 (rev 18).
Medium devsel. IRQ 18. Master Capable. Latency=64. Min
Gnt=8.Max Lat=64.
I/O at 0xe400 [0xe401].
Non-prefetchable 32 bit memory at 0xfebffe00 [0xfebffe00].
Bus 1, device 0, function 0:
VGA compatible controller: Matrox Matrox G200 AGP (rev 1).
Medium devsel. Fast back-to-back capable. IRQ 16. Master
Capable. Latency=64. Min Gnt=16.Max Lat=32.
Prefetchable 32 bit memory at 0xf4000000 [0xf4000008].
Non-prefetchable 32 bit memory at 0xfe6fc000 [0xfe6fc000].
Non-prefetchable 32 bit memory at 0xfd800000 [0xfd800000].
valinux:jdbeyer[~/stocks/setup]$
I am a little surprised to see the Matrox G200 AGP video board as using
IRQ16, since I did not know it used any IRQ at all. That would conflict
with the Ultra-2 SCSI controller to which my two hard drives are
connected. I suppose I should get in touch with the manufacturer of my
machine about this conflict, right?
Modem is IRQ 3, my UPS is IRQ 4; or vice-versa, but I am pretty sure
this is right.
NIC is IRQ 17 (this machine has 24 "IRQs", 0 to 23). My Ultra-2 SCSI PCI
card is IRQ 16, and my narrow SCSI card (for DDS-2 tape) is IRQ-18.
NIC is Intel PRO/100+, on PCI.
Modem is 3COM (US-Robotics) 56K V.90 (called an internal fax modem, but
I never use fax feature). Definately not a brain-damaged WinModem.
Almost certainly ISA.
> See if the error can be triggered by loading particular device drivers
> and executing them.
How do I do that? The modem is on a serial port (/dev/ttyS1) and that is
compiled right into the kernel, is it not?
valinux:jdbeyer[~/stocks/setup]$ ls -l /dev/modem
lrwxrwxrwx 1 root root 5 Oct 1 14:01 /dev/modem ->
ttyS1
valinux:jdbeyer[~/stocks/setup]$ ls -l /dev/ttyS1
crw------- 1 root tty 4, 65 Jan 22 07:30 /dev/ttyS1
valinux:jdbeyer[~/stocks/setup]$
Maybe I could do something with the NIC. This appears in
/etc/conf.modules:
alias eth0 eepro100
Do you mean to manually load that instead of having it come in as
needed? Do you really think the NIC on the PCI for sure and not sharing
interrupts with the modem, could be interfering with the modem that is
almost certainly on the ISA?
--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ Registered Machine 73926.
/( )\ Shrewsbury, New Jersey
^^-^^ 8:20am up 6 days, 19:23, 2 users, load average: 1.19, 0.76, 0.36
------------------------------
Subject: Re: What distribution seems the most popular and easy to work with?
From: Johan Kullstam <[EMAIL PROTECTED]>
Date: 22 Jan 2001 09:09:02 -0500
"Peter T. Breuer" <[EMAIL PROTECTED]> writes:
> Johan Kullstam <[EMAIL PROTECTED]> wrote:
> > it's always baffled me as to why mandrake continues to optimize for
> > pentium. how many people have i586 pentiums, that is, pentium-classic
> > or pentium-classic-mmx? note -- pentiumpro, pentium-ii/iii, celeron
>
> no, the mmx is pentium-pro design. It has pipelines one instruction
> shorter, that's all.
yikes! it's even worse than i feared.
> > are i686 *not* i586. optimizing for i586 makes things worse for
> > i686 when compared to either optimizing for i486 or i686.
>
> Exactly so.
>
> Peter
--
J o h a n K u l l s t a m
[[EMAIL PROTECTED]]
sysengr
------------------------------
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