Re: [MLUG - DISCUSSION] Installing kernel 2.4

[Ryan Woodsmall <EMAIL:PROTECTED>]

Ext3 is non-destructive - you create a journal file on an ext2 partition,
unmount it, mount as type ext3 with option 'journal=xxx,' and bingo, you
have an ext3 filesystem.  Change the filesystem entry in your /etc/fstab
and reboot.  You can always mount the filesystem as ext2 as well if
something goes horribly wrong with the journal.  I compiled and installed
a kernel with ext3 support Saturday on one of the quake machines (one of
MY machines ;) ) at the expo, and randomly pressed the reset button about
5 or 6 times.  No data loss, no fsck, just a little note saying that the
journal was being checked.  Nice.  It only took about 1.5 minutes to
'check' the journal file as opposed to 10 - 20 minutes to fsck a 16 GB 
partition.

Reiserfs is nice if you have a pristine machine, but if you need
journaling 'like now,' and you can't afford to rebuild the software on the
machine, ext3 is the way to go.  I'm looking forward to XFS.  My Indy at
home and my O2 at work are put through a lot of stress and I've NEVER
gotten a corrupt fs with xfs.

        Ryan Woodsmall
            EMAIL:PROTECTED
            http://web.missouri.edu/~rbwa44/

On Tue, 6 Feb 2001, Michael wrote:

> How does ext3 differ from Reiser?
> 
> *^*^*^*
> Have the courage to take your own thoughts seriously, for they will shape
> you. -- Albert Einstein
> 
> On Tue, 6 Feb 2001, Ryan Woodsmall wrote:
> 
> > Umm... Try /usr/src/vmlinuz* - the kernel is generally called
> > vmlinuz-something.  My 2.2.18 kernel with ext3 support is
> > vmlinuz-2.2.18ext3, for example.  Copy this file to /boot, and follow the
> > steps Igor outlined for making lilo see it and be able to boot it.
> > 
> > Have you ever compiled a kernel before?  If no, I really really REALLY
> > would suggest not starting with 2.4; maybe just try to recompile the
> > kernel that came with your distro or 2.2.18 to cut your teeth.  The 2.4
> > series might also need quite a few tools updated, unless you're running
> > Redhat or Mandrake 7.x.
> > 
> > Kernel installs are not something that you want to screw up, but you can
> > always save yourself  by keeping an old kernel around and in your
> > /etc/lilo.conf file.  Kernel 2.4 has some problems as well.  Read some of
> > the kernel dev lists for more info, but I understand that there are some
> > file system corruption problems in 2.4.1 (albeit not very common).  Still,
> > a nasty bug, that.
> > 
> > As a sidenote, has anyone played with ext3?  It's pretty nice and
> > seemingly stable, even though it's only at version 0.0.5e.  I'll be
> > rolling it out on 120-odd machines in the GCB labs pretty quick, because
> > watching a 16 GB partition fsck for 10-20 minutes is a mind-numbing
> > experience and a real show stopper when you have to get work done.
> > 
> >         Ryan Woodsmall
> >             EMAIL:PROTECTED
> >             http://web.missouri.edu/~rbwa44/
> > 
> > On Tue, 6 Feb 2001, Aaron Littich wrote:
> > 
> > > I finally got the kernel installed, (had to screw around with my
> > > stupid mouse and network card) and I'm at the stage where I am
> > > copying a BZimage compressed kernel image to /boot, but don't
> > > know which file to use.
> > > I am in /usr/src/linux/linux-2.4.0/arch/i386/boot/compreesed/ and
> > > I'm looking at three files:
> > > Makefile
> > > head.S
> > > misc.c
> > > 
> > > Do I use head.S??
> > > 
> > > 
> > > There is 
> > > --- "Igor Izyumin Jr." <EMAIL:PROTECTED> wrote:
> > > > On Sunday 14 January 2001 17:10, you wrote:
> > > > > Can someone help me add a new kernel, 2.4??  I downloaded the
> > > > rpm
> > > > > from MLUG's site, rpm-i to it, and put it in /usr/src/redhat,
> > > > and
> > > > > when I try to do make config, it just sits there and does
> > > > > nothing.
> > > > > I've also tried doing make xconfig and menuconfig, same
> > > > thing.
> > > > Hold on, hold on.  You're starting at the wrong place.  You
> > > > need to download 
> > > > the kernel from kernel.org, and it should be .tar.gz.  Then, go
> > > > to /usr/src/ 
> > > > and untar the kernel there.  Be sure that a directory named
> > > > "linux" does not 
> > > > exist, as that's where it will untar it.  Rename it if it does
> > > > exist.  Then 
> > > > do:
> > > > mv linux linux-2.4.0
> > > > cd linux-2.4.0
> > > > make mrproper
> > > > make xconfig (if you have X running), else do make menuconfig
> > > > make dep
> > > > make bzImage
> > > > make modules
> > > > make modules_install
> > > > then copy the bzImage (the location is mentioned in the readme)
> > > > to the /boot 
> > > > directory, rename it to something like vmlinuz-2.4.0 and add
> > > > the new kernel 
> > > > to to lilo.conf.  DO NOT REMOVE THE OLD KERNEL FROM LILO - the
> > > > new one could 
> > > > very likely not work.  Add something like this to lilo.conf:
> > > > 
> > > > image=/boot/vmlinuz-2.4.0 #change to reflect correct name
> > > >         label=linux  # CHANGE THE LABEL FOR THE OLD KERNEL
> > > >         root=/dev/sdd5  # just copy whatever is from the other
> > > > kernel
> > > >         read-only
> > > > Then RUN LILO.  Just do this as root:
> > > > /sbin/lilo
> > > > This is very important.  If you don't do it, your system will
> > > > get kinda 
> > > > screwed up.  ALSO, HAVE A BOOT DISK HANDY, in case something
> > > > does get screwed 
> > > > up.
> > > > One final word: this is not hard, but it can get slightly
> > > > frustrating, 
> > > > especially when you screw something up.  Just don't panic if
> > > > something 
> > > > breaks.  If you have a boot floppy, you'll be fine.
> > > > -- 
> > > > -- Igor
> > > > --
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> > > > words
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