[gentoo-user] newbie livecd installation dual boot problems

[gentoo-user] newbie livecd installation dual boot problems

[TN]

I'm attempting to install Gentoo with the GUI livecd 2006 utility, and 
I'm installing it on a laptop which was dual booting happily with debian 
& winxp.

I wiped the debian installation, and carefully made sure that Gentoo 
wasn't going to wipe out the winxp partition which is the first. I made 
/dev/hda2 one partition for gentoo, and it's JFS.

The installation process finished without errors, but when I reboot the 
machine I have 2 problems:

(i) the grub installation doesn't show the winxp entry (easy enough 
fixed, but still an installation bug)

(ii) gentoo starts booting, but fails when trying to mount the root device.
 >> Determining root device...
 >> Mounting root...
mount : Mounting /dev/hda2 on /newroot failed: Invalid argument
!! Could not mount specified ROOT, try again
!! The root block device is unspecified or not detected.


The grub boot lines are:
root (hd0,1)
kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0 
init=/linuxrc ramdisk=8192 real_root=/dev/hda2
initrd /boot/initramfs-genkernel-x86-2.6.15-gentoo-r5

This was how the installer set it up, so what needs to change to fix it ?

thanks!


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Re: [gentoo-user] newbie livecd installation dual boot problems

[Jim]

* on the Fri, Mar 10, 2006 at 12:24:58PM +1100, TN said:
<snip>

> The grub boot lines are:
> root (hd0,1)
> kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0 
> init=/linuxrc ramdisk=8192 real_root=/dev/hda2
> initrd /boot/initramfs-genkernel-x86-2.6.15-gentoo-r5

I think I read somewhere that JFS needs to be booted rw instead of ro.
Try to change your kernel= line to this:

kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0 
init=/linuxrc ramdisk=8192 real_root=/dev/hda2 rw

*NOTE* the above should be ONE line.

P.S.  Why didn't you try ReiserFS or ext3?  I have always used reiserfs
without issue and find it to be very stable and very fast.

Jim
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Re: [gentoo-user] newbie livecd installation dual boot problems

[Sarpy Sam]

On 3/9/06, TN <tnuro@yahoo.com.au> wrote:
> I'm attempting to install Gentoo with the GUI livecd 2006 utility, and
> I'm installing it on a laptop which was dual booting happily with debian
> & winxp.
>
> I wiped the debian installation, and carefully made sure that Gentoo
> wasn't going to wipe out the winxp partition which is the first. I made
> /dev/hda2 one partition for gentoo, and it's JFS.
>
> The installation process finished without errors, but when I reboot the
> machine I have 2 problems:
>
> (i) the grub installation doesn't show the winxp entry (easy enough
> fixed, but still an installation bug)
>
> (ii) gentoo starts booting, but fails when trying to mount the root device.
>  >> Determining root device...
>  >> Mounting root...
> mount : Mounting /dev/hda2 on /newroot failed: Invalid argument
> !! Could not mount specified ROOT, try again
> !! The root block device is unspecified or not detected.
>
>
> The grub boot lines are:
> root (hd0,1)
> kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0
> init=/linuxrc ramdisk=8192 real_root=/dev/hda2
> initrd /boot/initramfs-genkernel-x86-2.6.15-gentoo-r5
>
> This was how the installer set it up, so what needs to change to fix it ?
>
> thanks!

>From the gentoo handbook located here
http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=10

Note: If your root filesystem is JFS, you must add " ro" to the kernel
line since JFS needs to replay its log before it allows read-write
mounting.

I don't use JFS so I dobn't know exactly how to do it but this is what
I got from searching google.

Kirby

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Re: [gentoo-user] newbie livecd installation dual boot problems

[Jim]

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Jim wrote:
> * on the Fri, Mar 10, 2006 at 12:24:58PM +1100, TN said:
> <snip>
>
>> The grub boot lines are:
>> root (hd0,1)
>> kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0
>> init=/linuxrc ramdisk=8192 real_root=/dev/hda2
>> initrd /boot/initramfs-genkernel-x86-2.6.15-gentoo-r5
>
> I think I read somewhere that JFS needs to be booted rw instead of ro.
> Try to change your kernel= line to this:
>
> kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0
> init=/linuxrc ramdisk=8192 real_root=/dev/hda2 rw
>
> *NOTE* the above should be ONE line.
>
> P.S.  Why didn't you try ReiserFS or ext3?  I have always used reiserfs
> without issue and find it to be very stable and very fast.
>
> Jim
I got it backwards.  Change the rw to ro like so:

kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0
init=/linuxrc ramdisk=8192 real_root=/dev/hda2 ro

Jim
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Re: [gentoo-user] newbie livecd installation dual boot problems

[TN]

Jim wrote:
> <snip>
> I think I read somewhere that JFS needs to be booted rw instead of ro.
> Try to change your kernel= line to this:
>
> kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0 
> init=/linuxrc ramdisk=8192 real_root=/dev/hda2 rw
>
> *NOTE* the above should be ONE line.
>
> P.S.  Why didn't you try ReiserFS or ext3?  I have always used reiserfs
> without issue and find it to be very stable and very fast.
>
> Jim
>   

I have tried both rw & ro since I had 2 different replies about this 
problem - unfortunately both failed with the same error as before.

I use JFS since I find that it's fast & stable too like Reiser. I tended 
to use a scattering of filesystems in the past so that I had experience 
of them all, but I'm gravitating towards JFS mostly now on my servers. 
I've done extensive speed testing using IOZone (http://www.iozone.org/) 
and for our systems, our drives, our application I just liked jfs. Not a 
lot between them all though apart from speed of file creation/deletion.

thanks
Trevor.


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Re: [gentoo-user] newbie livecd installation dual boot problems

[Jim]

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TN wrote:
> I have tried both rw & ro since I had 2 different replies about this
> problem - unfortunately both failed with the same error as before.
>
> I use JFS since I find that it's fast & stable too like Reiser. I
> tended to use a scattering of filesystems in the past so that I had
> experience of them all, but I'm gravitating towards JFS mostly now
> on my servers. I've done extensive speed testing using IOZone
> (http://www.iozone.org/) and for our systems, our drives, our
> application I just liked jfs. Not a lot between them all though
> apart from speed of file creation/deletion.
>
> thanks
> Trevor.
Did you try to boot from the livecd, or another boot cd, and see if
you can even mount your JFS partition?

Jim
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Re: [gentoo-user] newbie livecd installation dual boot problems

[Sarpy Sam]

I am assuming the kernel is built with JFS support compiled in and not
as a module.

I am not a genkernel user but couldn't you boot the machine like this,


root (hd0,1)
kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/hda2

This will test if it's a kernel problem or a boot splash problem.

Kirby

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Re: [gentoo-user] newbie livecd installation dual boot problems

[TN]

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Re: [gentoo-user] newbie livecd installation dual boot problems

[TN]

Sarpy Sam wrote:
> I am assuming the kernel is built with JFS support compiled in and not
> as a module.
>
> I am not a genkernel user but couldn't you boot the machine like this,
>
>
> root (hd0,1)
> kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/hda2
>
> This will test if it's a kernel problem or a boot splash problem.
>
> Kirby
>
>   
I gave that a go , but still no luck. I'm having one of those days.

I think I'll reinstall using reiser - I thought that jfs would be fine 
since the installer gave me the option. I assume that had I done a 
network install that I probably would've got a kernel with jfs ? My 
install was completely from the live cd.

thanks!

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Re: [gentoo-user] newbie livecd installation dual boot problems

[Jim]

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TN wrote:
> Yes I have. It mounts fine when using the livecd to boot from. I can
> read/write to it no problem, and all the file structure is there.
> I've had a look at the bootlog with dmesg, and I'm now thinking that
> the installed kernel doesn't have JFS modules/support in it......the
> boot identifies the partitions (hda1, hda2 etc), but then it tries
> to mount hda2 with almost every fs APART from my beloved jfs. It's
> tried Reiser, XFS, ext2, ext3, vfs - everything but jfs.
>
> Oh....I don't fancy another 6 hour install!!
>
> Send instant messages to your online friends
> http://au.messenger.yahoo.com -- gentoo-user@gentoo.org mailing list

Can you build a kernel?  I could build a kernel for you with JFS
support and zip up the kernel image from /boot and everything under
/lib/modues.

Or see if you can use a boot CD to boot, then chroot to your JFS drive
and build your own kernel.

Jim
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Re: [gentoo-user] newbie livecd installation dual boot problems

[Sarpy Sam]

On 3/9/06, TN <tnuro@yahoo.com.au> wrote:
> Sarpy Sam wrote:
> > I am assuming the kernel is built with JFS support compiled in and not
> > as a module.
> >
> > I am not a genkernel user but couldn't you boot the machine like this,
> >
> >
> > root (hd0,1)
> > kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/hda2
> >
> > This will test if it's a kernel problem or a boot splash problem.
> >
> > Kirby
> >
> >
> I gave that a go , but still no luck. I'm having one of those days.
>
> I think I'll reinstall using reiser - I thought that jfs would be fine
All you have to do is chroot back in and rebuild your kernel with JFS
built in, not as a module. it's not that difficult.

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Re: [gentoo-user] newbie livecd installation dual boot problems

[TN]

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[FIXED] Re: [gentoo-user] newbie livecd installation dual boot problems

[TN]

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Re: [FIXED] Re: [gentoo-user] newbie livecd installation dual boot problems

[Jim]

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TN wrote:
> TN wrote:
>> Jim wrote:
>>>
>>> Can you build a kernel?  I could build a kernel for you with JFS
>>> support and zip up the kernel image from /boot and everything under
>>> /lib/modues.
>>>
>>> Or see if you can use a boot CD to boot, then chroot to your JFS drive
>>> and build your own kernel.
>>>
>>> Jim
>>>
>> Jim & Kirby:
>> I haven't built a kernel in gentoo, but I have plenty of times on
>> other distros (suse/debian) in the past.
>>
>> thanks for your offer to build the kernel for me. I was just
>> preparing when I've corrupted  /dev/hda2 by my own dumb
>> fault.....I reset the machine while /dev/hda2 was still mounted. It
>> wont mount now. gah! I havent' any time left today, so I'll leave
>> it to tomorrow.
>>
>> thanks  guys
>> -Trevor.
>
> Well thanks again guys, I now have a booting gentoo system. The
> partition wasn't too damaged and I was able to build a jfs enabled
> kernel.
> Now to sort out my kde probs :)
>
> cheers
> -Trevor
How long did it take you to build a kernel?  It seemed pretty fast
since I emailed you.

An easy fix for your kde probs is to use Gome : )

Jim
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Re: [FIXED] Re: [gentoo-user] newbie livecd installation dual boot problems

[TN]

Jim wrote:
>
> How long did it take you to build a kernel?  It seemed pretty fast
> since I emailed you.
>
> An easy fix for your kde probs is to use Gome : )
>
> Jim

Damn quick I must say - about 15 mins. This laptop is a PentiumM 1.8.  
Gentoo boots damn fast too.
My KDE probs seems to be improving, just a few manual things I'm 
config'ing right now to get it all going. Fastest kernel compile I've 
done. I'll have to check it out, as I must've left out 70% of the 
modules to get that compile time :0

Yeah, I've been swapping between Gnome & KDE just as much as I swap 
between filesystems :)
At the moment I've been using KDE for about 3 months after being pretty 
much gnomed for 2 years or so.
So.....to have the best of everything, we need a triple booting, WinXP 
(games), linux (KDE & GNOME), and OSX PC...........they don't make 
laptop drives big enough :)



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Re: [FIXED] Re: [gentoo-user] newbie livecd installation dual boot problems

[Travis Osterman]

I am a jfs user as well and would recommend (especially on a laptop)
to add the line that was recommended above:

> root (hd0,1)
> kernel /boot/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/hda2

to the bottom of your /boot/grub/grub.conf.  Often when I hard reboot
(power failures, etc), reading the bootsplash stuff seems to take
priority over checking the fs.  The simple solution for me is to leave
a non-nonsense 'failsafe' line in grub and boot into it so that my fs
gets repaired and then reboot normally.  You could achieve the same
thing by editting the grub command at boot, but this seems like a
simple alternative.  HTH.

-- Travis

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