date:20001007

Re: ext3 and Software RAID

2000-10-07 Thread Andreas Dilger

Matt Stegman writes:
> A few weeks ago Alan Cox mentioned, in reply to someone asking about
> building an enourmous RAID array,
> 
> "Right now 2.2 doesnt support journalling over software raid so that would
> stop you using reiserfs and ext3."
> 
> http://kernelnotes.org/lnxlists/linux-kernel/lk_0008_05/msg9.html
> 
> Is this still true? I was going to use 2.2.17, with ext3-0.0.3b, and Ingo
> Molnar's 2.2.17 RAID patch:

This was just discussed on l-k last week.  Basically, no it still doesn't
work (not for 2.2 at least).  The problem is with RAID doing buffer cache
snooping and causing data to be written out-of-order to disk (on 2.2).
This is fixed in 2.4, but there _may_ still be a problem in 2.4 when
rebuilding the array (on disk failure) in 2.4...  I'm not too sure of
the latter though...

Cheers, Andreas
-- 
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/   -- Dogbert
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Re: ack number in a connection-refused RST

2000-10-07 Thread David Wagner

David S. Miller wrote:
>   From: [EMAIL PROTECTED] (David Wagner)
>
>   How could it be for another connection, if it has source and
>   destination port numbers?
>
>Consider previously existing connections with the same src/dst/ports
>and the effects of massive packet reordering and other transmission
>delays.

Good point.  Ok, I see your point.  I stand corrected.

Thanks for catching that.
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Re: will ip 6 in ip4 tunnelling be fixed anytime soon ?

2000-10-07 Thread Bernd Eckenfels

In article <[EMAIL PROTECTED]> you wrote:
> Is there an ETA on having ip6 in ip4 tunnelling working with the latest
> net-utils??

what is the problem? Do u have a bug or do u mean general IPv6 Support?
There are a lot of unoficial IPv6 Packages, Debian has a good Collection,
and we are trying to get them back into the Upstream.

For net-tools, everything should be ok with 1.57

Greetings
Bernd
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Re: User-mode linux stack overflow: could be generic problem

2000-10-07 Thread Jeff Dike


Thank you!

I've been waiting for someone to send me that stack.  There aren't any real 
smoking guns there.  I'm guessing that the difference between your laptop and 
the machine it works on is that your laptop is running a fairly recent kernel 
(2.4.0-testx) and the other isn't.  The sigcontext struct greatly increased in 
size (to ~800 bytes IIRC) to accomodate the MMX registers or something.  There 
are three signals on your stack, so those frames by themselves are taking up 
half the stack page.

Anyway, the patch below removes 256 bytes from the set_signals frame.  It 
ought to alleviate things a bit.  I'll be looking for other things I can do, 
as well. Let me know how it works for you.

Jeff

--- arch/um/kernel/signal_user.c~   Thu Sep 14 17:00:08 2000
+++ arch/um/kernel/signal_user.cSun Oct  8 00:21:29 2000
@@ -45,26 +45,29 @@
 
 int set_signals(int enable)
 {
-   sigset_t mask, unmask, old;
+   sigset_t mask;
+   int ret;
 
check_stack_overflow();
+   sigprocmask(SIG_BLOCK, NULL, );
+   ret = enable_mask();
sigemptyset();
-   sigemptyset();
-   if(enable & (1 << SIGIO_BIT)) sigaddset(, SIGIO);
-   else sigaddset(, SIGIO);
+   if(enable & (1 << SIGIO_BIT)) sigaddset(, SIGIO);
if(enable & (1 << SIGVTALRM_BIT)){
-   sigaddset(, SIGVTALRM);
-   sigaddset(, SIGALRM);
+   sigaddset(, SIGVTALRM);
+   sigaddset(, SIGALRM);
}
-   else {
+   if(sigprocmask(SIG_UNBLOCK, , NULL) < 0)
+   panic("Failed to enable signals");
+   sigemptyset();
+   if((enable & (1 << SIGIO_BIT)) == 0) sigaddset(, SIGIO);
+   if((enable & (1 << SIGVTALRM_BIT)) == 0){
sigaddset(, SIGVTALRM);
sigaddset(, SIGALRM);
}
-   if(sigprocmask(SIG_BLOCK, , ) < 0)
-   panic("Failed to change signal mask");
-   if(sigprocmask(SIG_UNBLOCK, , NULL) < 0)
-   panic("Failed to change signal mask");
-   return(enable_mask());
+   if(sigprocmask(SIG_BLOCK, , NULL) < 0)
+   panic("Failed to block signals");
+   return(ret);
 }
 
 /*


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Re: SoundFusion/Cirrus Logic CS4630 sound chipset support

2000-10-07 Thread David Ford


David Ford wrote:

> Jeff Garzik wrote:
>
> > On Sat, 7 Oct 2000, David Ford wrote:
> > > Does anyone have any driver for this, or does anyone have a driver that
> > > has been started?
> >
> > What's the PCI id?  Does drivers/sound/cs46xx.c work after adding your
> > PCI id?
>
> The ID is already in the file but the kernel doesn't print any init messages
> or show anything in /dev/sound.

disregard, it must have been operator error.  i rebuilt it as a module and it's
working fine albeit it seems to have pretty weak sound output and degenerates
to garble when the volume is turned up.

i think i may take this card back, even tho i got it due to it's numerous
inputs.

-d

--
  "There is a natural aristocracy among men. The grounds of this are
  virtue and talents", Thomas Jefferson [1742-1826], 3rd US President



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Re: Blocked processes <=> Elevator starvation?

2000-10-07 Thread Rik van Riel


On Sun, 8 Oct 2000, Rui Sousa wrote:

> After starting 2 processes that scan a lot of files (diff, find,
> slocate, ...) it's impossible to run any other processes that
> touch the disk, they will stall until one of the first two stop.
> Could this be a sign of starvation in the elevator code?

It could well be. I've seen this problem too and don't
really have another explanation for this phenomenon.

OTOH, maybe there is another reason for it that hasn't
been found yet ;)

regards,

Rik
--
"What you're running that piece of shit Gnome?!?!"
   -- Miguel de Icaza, UKUUG 2000

http://www.conectiva.com/   http://www.surriel.com/

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ext3 and Software RAID

2000-10-07 Thread Matt Stegman


Hello,

  I've been using ext3 for some time now on an NFS server, with excellent
results (it's crashed once, and I didn't have to wait for fsck! yay!).  
I'm also wanting to upgrade to RAID (in software, since I'm short on
cash).

A few weeks ago Alan Cox mentioned, in reply to someone asking about
building an enourmous RAID array,

"Right now 2.2 doesnt support journalling over software raid so that would
stop you using reiserfs and ext3."

http://kernelnotes.org/lnxlists/linux-kernel/lk_0008_05/msg9.html

Is this still true? I was going to use 2.2.17, with ext3-0.0.3b, and Ingo
Molnar's 2.2.17 RAID patch:
http://people.redhat.com/mingo/raid-patches/raid-2.2.17-A0

  -Matt Stegman

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Re: SoundFusion/Cirrus Logic CS4630 sound chipset support

2000-10-07 Thread David Ford


Jeff Garzik wrote:

> On Sat, 7 Oct 2000, David Ford wrote:
> > Does anyone have any driver for this, or does anyone have a driver that
> > has been started?
>
> What's the PCI id?  Does drivers/sound/cs46xx.c work after adding your
> PCI id?

The ID is already in the file but the kernel doesn't print any init messages
or show anything in /dev/sound.

-d

--
  "There is a natural aristocracy among men. The grounds of this are
  virtue and talents", Thomas Jefferson [1742-1826], 3rd US President



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Blocked processes <=> Elevator starvation?

2000-10-07 Thread Rui Sousa


Hi,

I reported this problem before but didn't get any answers so I'm posting
again.

After starting 2 processes that scan a lot of files (diff, find,
slocate, ...) it's impossible to run any other processes that touch 
the disk, they will stall until one of the first two stop. Could this be
a sign of starvation in the elevator code?

This is a UP machine, 64 Mb, IDE disks, kernel 2.4.0-test9 (final). If I
can help with further details just ask.


Rui Sousa

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