Re: File system Corruption with 2.4.16

Jeff Merkey
2001-12-01T23:48:32Z

I am seeing corruption on 2.4.16 (2.4.17-pre1/2) as well. Whatever this
gentlemen is doing is making it show up quicker, but I am on my fourth
interation of fsck'ing 2.4.16 on my production server with NWFS builds. I
am looking through Al Viros's inode code changes to see if there's hole
somewhere. This problem appears to be related to low memory conditions. I
see it when memory is getting low. May be VM related as well.

Jeff

----- Original Message -----
From: "Charles-Edouard Ruault" <ce@ruault.com>
To: "J Sloan" <jjs@pobox.com>
Cc: <linux-kernel@vger.kernel.org>
Sent: Saturday, December 01, 2001 3:34 PM
Subject: Re: File system Corruption with 2.4.16

> J Sloan wrote:
>
> > Charles-Edouard Ruault wrote:
> >
> > > Hi there,
> > >
> > > i've experienced very weird behaviour with kernel 2.4.16 ( on at least
2
> > > different machines with different motherboards & CPUs ).
> > > I'm having ext2 filesystem problems on both machines now, one is
totally
> > > unusable i need to reinstall it from scratch.
> >
> > Are you sure? perhaps a forced fsck of all
> > filesystems would do the trick. New linux users
> > coming from a microsoft background are too
> > quick to reinstall as a means of maintenance.
>
> Well i did a forced fsck on all my filesystems and now a bunch of files
are
> corrupted/missing in /usr so rather than figuring out which file is
missing
> and which package to reinstall i'll reinstall the whole system ( will be
much
> faster in my opinion ).
>
> >
> >
> > >
> > > I've noticed the problem on different points :
> > > - first lots of problems with symlinks ....
> > > unable to compile the kernel for example it bails out with "too many
> > > symlinks levels" ,
> > >
> > > /usr/include/asm/pgtable.h:109:33:
> > > /usr/src/linux/include/asm/pgtable-2level.h: Too many levels of
symbolic
> > > links
> >
> > Yes, it looks like the filesystem is corrupted.
> >
> > > I backtracked to kernel 2.4.14 and now after doing an fsck on all my
> > > partitions ( only one problem reported on /home ) , everything is back
> > > to normal.
> >
> > Have you tried 2.4.16 since the fsck?
>
> I did a fsck ( not forced ) then bootedup 2.4.16 and had the problem ,
then i
> tried to compile 2.4.14 on the machine and it failed ( because of the
symlink
> problems ) , i compiled the kernel on another machine, installed it and
> booted i had the same problem again. I then did the force fsck and booted
> 2.4.14 and it was fine. You might be right about 2.4.16 , i'll boot it
again
> and see if the problem is still there.
> What's weird is that the fsck did not report any problem on my root
partition
> and i was seeing problem on it ...
> The only problem it saw ( and fixed ) was in /home
>
> >
> >
> > > I've read that there was a filesystem problem in 2.4.15 that is
supposed
> > > to be fixed in 2.4.16.
> >
> > That is the case,
> >
> > > These 2 machines did run 2.4.15 from it's birtday until 2.4.16 was
born
> > > so maybe the problem was created in 2.4.15 but showed up in 2.4.16 ...
> > > If someone has an explanation to this behaviour, i would be really
happy
> >
> > Of course.
> >
> > The 2.4.15 filesystem corruption problem occurred
> > on shutdown. When you booted up into 2.4.16, the
> > filesystem was corrupt and you began to see the
> > strange symptoms. when you backtracked to 2.4.14
> > and did the fsck, the problems were corrected.
> >
> > I'll bet $20 that 2.4.16 runs fine now as well.
>
> I'll try and let you know !
> thanks a lot for your quick reply !
>
> >
> >
> > cu
> >
> > jjs
> >
> > -
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