Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Coert Waagmeester

Volker Armin Hemmann wrote:

On Thursday 04 November 2010, dhk wrote:

I've always used the genkernel, but now am trying to make a manual one.
 I think the kernel is alright since all the default setting seemed
reasonable and the build was easy enough.  However, when I boot to it I
get a kernel panic and it complains about the root device /dev/hda3. So
I think the problem has to do with my parameters or syntax in grub.conf.
 Below are three grub menu options.  The first two have the problem and
the third is the genkernel that works fine.  Is there something wrong
with the way the first two are?  Thanks.

# This is a Manually built kernel with default settings.  kernel panic
title Gentoo Linux x86 2.6.34-r12
root (hd0,0)
kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3

# This is a Manually built kernel with default settings.  kernel panic
title Gentoo Linux x86 2.6.34-r12
root (hd0,0)
kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
splash=verbose video=vesafb:mtrr,ywrap udev
# From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85

# This a genkernel and works
title Gentoo Linux x86 2.6.34-r6
root (hd0,0)
kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
video=vesafb:mtrr,ywrap udev
initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6

--dhk


grub must point to sda3 not hda3




Yes, I had a similar problem.
The device names are different on my machine between genkernel and my 
own kernel.

Make sure to change that in your /etc/fstab as well.

Dont know if this is always the case though.

Regards,
Coert Waagmeester



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread dhk
On 11/08/2010 05:28 AM, Coert Waagmeester wrote:
 Volker Armin Hemmann wrote:
 On Thursday 04 November 2010, dhk wrote:
 I've always used the genkernel, but now am trying to make a manual one.
  I think the kernel is alright since all the default setting seemed
 reasonable and the build was easy enough.  However, when I boot to it I
 get a kernel panic and it complains about the root device /dev/hda3. So
 I think the problem has to do with my parameters or syntax in grub.conf.
  Below are three grub menu options.  The first two have the problem and
 the third is the genkernel that works fine.  Is there something wrong
 with the way the first two are?  Thanks.

 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3

 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
 splash=verbose video=vesafb:mtrr,ywrap udev
 # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85

 # This a genkernel and works
 title Gentoo Linux x86 2.6.34-r6
 root (hd0,0)
 kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
 ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
 video=vesafb:mtrr,ywrap udev
 initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6

 --dhk

 grub must point to sda3 not hda3


 
 Yes, I had a similar problem.
 The device names are different on my machine between genkernel and my
 own kernel.
 Make sure to change that in your /etc/fstab as well.
 
 Dont know if this is always the case though.
 
 Regards,
 Coert Waagmeester
 
 

I'm booting to an IDE hard disk.  Are you say the device name should
change from /dev/hda3 to /dev/sda3?  If I change it in /etc/fstab and it
doesn't work, I'll have problems, I'll probably have to boot to the livecd.

Thanks,

--dhk



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Coert Waagmeester

dhk wrote:

On 11/08/2010 05:28 AM, Coert Waagmeester wrote:

Volker Armin Hemmann wrote:

On Thursday 04 November 2010, dhk wrote:

I've always used the genkernel, but now am trying to make a manual one.
 I think the kernel is alright since all the default setting seemed
reasonable and the build was easy enough.  However, when I boot to it I
get a kernel panic and it complains about the root device /dev/hda3. So
I think the problem has to do with my parameters or syntax in grub.conf.
 Below are three grub menu options.  The first two have the problem and
the third is the genkernel that works fine.  Is there something wrong
with the way the first two are?  Thanks.

# This is a Manually built kernel with default settings.  kernel panic
title Gentoo Linux x86 2.6.34-r12
root (hd0,0)
kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3

# This is a Manually built kernel with default settings.  kernel panic
title Gentoo Linux x86 2.6.34-r12
root (hd0,0)
kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
splash=verbose video=vesafb:mtrr,ywrap udev
# From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85

# This a genkernel and works
title Gentoo Linux x86 2.6.34-r6
root (hd0,0)
kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
video=vesafb:mtrr,ywrap udev
initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6

--dhk

grub must point to sda3 not hda3



Yes, I had a similar problem.
The device names are different on my machine between genkernel and my
own kernel.
Make sure to change that in your /etc/fstab as well.

Dont know if this is always the case though.

Regards,
Coert Waagmeester




I'm booting to an IDE hard disk.  Are you say the device name should
change from /dev/hda3 to /dev/sda3?  If I change it in /etc/fstab and it
doesn't work, I'll have problems, I'll probably have to boot to the livecd.

Thanks,

--dhk




It has indeed happened to me with an IDE PATA disk.
Try first only to change only your grub config.
Then if you see that the kernel boots fine, you can change /etc/fstab.

If you want you can even use LABELs in fstab.

give your ext{2,3} partitions labels with e2label

and change the device node eg /dev/hda1 in fstab to LABEL=yournewlabel


Regards,
Coert Waagmeester



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Volker Armin Hemmann
On Monday 08 November 2010, dhk wrote:
 On 11/08/2010 05:28 AM, Coert Waagmeester wrote:
  Volker Armin Hemmann wrote:
  On Thursday 04 November 2010, dhk wrote:
  I've always used the genkernel, but now am trying to make a manual one.
  
   I think the kernel is alright since all the default setting seemed
  
  reasonable and the build was easy enough.  However, when I boot to it I
  get a kernel panic and it complains about the root device /dev/hda3. So
  I think the problem has to do with my parameters or syntax in
  grub.conf.
  
   Below are three grub menu options.  The first two have the problem and
  
  the third is the genkernel that works fine.  Is there something wrong
  with the way the first two are?  Thanks.
  
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3
  
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
  splash=verbose video=vesafb:mtrr,ywrap udev
  # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85
  
  # This a genkernel and works
  title Gentoo Linux x86 2.6.34-r6
  root (hd0,0)
  kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
  ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
  video=vesafb:mtrr,ywrap udev
  initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6
  
  --dhk
  
  grub must point to sda3 not hda3
  
  Yes, I had a similar problem.
  The device names are different on my machine between genkernel and my
  own kernel.
  Make sure to change that in your /etc/fstab as well.
  
  Dont know if this is always the case though.
  
  Regards,
  Coert Waagmeester
 
 I'm booting to an IDE hard disk.  Are you say the device name should
 change from /dev/hda3 to /dev/sda3?  If I change it in /etc/fstab and it
 doesn't work, I'll have problems, I'll probably have to boot to the livecd.
 
 Thanks,
 
 --dhk

if you are using libata, you have sdX device names.



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Dale

Coert Waagmeester wrote:



It has indeed happened to me with an IDE PATA disk.
Try first only to change only your grub config.
Then if you see that the kernel boots fine, you can change /etc/fstab.

If you want you can even use LABELs in fstab.

give your ext{2,3} partitions labels with e2label

and change the device node eg /dev/hda1 in fstab to LABEL=yournewlabel


Regards,
Coert Waagmeester




I agree with this 100%.  I switched mine to the new PATA drivers and I 
couldn't figure out what the drive order was.  I used LABELS and it has 
worked ever since.  The funny thing is, I have a card to hook a SATA 
drive up to and it puts it first instead of the drives that are hooked 
directly to the mobo.  I wasn't expecting that and that was why I could 
not get mine to boot with the PATA drives.  Bad thing is, the CD/DVD's I 
have still use the old IDE drivers so I couldn't even test it by booting 
that.


I have not been able to get grub to see the LABELS yet but I'm going to 
post fstab so that you have a example that is known to work and not from 
a guide:


/dev/disk/by-label/boot/bootext2noatime1 2
/dev/disk/by-label/root/reiserfsdefaults0 1
/dev/disk/by-label/swapnoneswapsw0 0
/dev/disk/by-label/portage/usr/portageext3defaults0 1
/dev/disk/by-label/home/homereiserfsdefaults1 1
/dev/disk/by-label/data/datareiserfsdefaults0 1

Now someone post their grub.conf for us both.  I just can't get mine to 
work with grub at all.  I can't even use tab to find the drives in the 
boot menu.


Hope that helps.

Dale

:-)  :-)



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Stroller

On 8/11/2010, at 5:56pm, Dale wrote:
 ...
 I have not been able to get grub to see the LABELS yet but I'm going to post 
 fstab so that you have a example that is known to work and not from a guide:
 
 /dev/disk/by-label/boot/bootext2noatime1 2
 /dev/disk/by-label/root/reiserfsdefaults0 1
 /dev/disk/by-label/swapnoneswapsw0 0
 /dev/disk/by-label/portage/usr/portageext3defaults0 1
 /dev/disk/by-label/home/homereiserfsdefaults1 1
 /dev/disk/by-label/data/datareiserfsdefaults0 1

I'm not paying enough attention to know whether your above fastab works or not, 
but /dev/disk/by-label/* seems a relatively ugly way of doing things. I'm 
pretty sure it's not intended that you use that format, and I have no idea 
whether it's supposed to work that way.

All the guides say to use the word LABEL. That's not a variable or anything - 
it's the literal word you're supposed to use.

I have no idea why a guide should be considered unreliable, but the below is 
not fabricated - it is from an actual working system:

$ grep -ve ^# /etc/fstab

LABEL=boot  /boot   ext2noauto,noatime  1 2
LABEL=/ /   ext4noatime 0 1
LABEL=swap  noneswapsw  0 0
/dev/cdrom  /mnt/cdrom  autonoauto,ro,users 0 0

LABEL=space /mnt/space  ext4noatime 0 3

shm /dev/shmtmpfs   nodev,nosuid,noexec 0 0
$ 

To me this seems cleaner than your format, and it's certainly fewer characters!

Stroller.




Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Dale

Stroller wrote:

On 8/11/2010, at 5:56pm, Dale wrote:
   

...
I have not been able to get grub to see the LABELS yet but I'm going to post 
fstab so that you have a example that is known to work and not from a guide:

/dev/disk/by-label/boot/bootext2noatime1 2
/dev/disk/by-label/root/reiserfsdefaults0 1
/dev/disk/by-label/swapnoneswapsw0 0
/dev/disk/by-label/portage/usr/portageext3defaults0 1
/dev/disk/by-label/home/homereiserfsdefaults1 1
/dev/disk/by-label/data/datareiserfsdefaults0 1
 

I'm not paying enough attention to know whether your above fastab works or not, 
but /dev/disk/by-label/* seems a relatively ugly way of doing things. I'm 
pretty sure it's not intended that you use that format, and I have no idea 
whether it's supposed to work that way.

All the guides say to use the word LABEL. That's not a variable or anything - 
it's the literal word you're supposed to use.

I have no idea why a guide should be considered unreliable, but the below is 
not fabricated - it is from an actual working system:

$ grep -ve ^# /etc/fstab

LABEL=boot  /boot   ext2noauto,noatime  1 2
LABEL=/ /   ext4noatime 0 1
LABEL=swap  noneswapsw  0 0
/dev/cdrom  /mnt/cdrom  autonoauto,ro,users 0 0

LABEL=space /mnt/space  ext4noatime 0 3

shm /dev/shmtmpfs   nodev,nosuid,noexec 0 0
$

To me this seems cleaner than your format, and it's certainly fewer characters!

Stroller.

   


Well, it does work since it booted as recent as last night when I 
updated my kernel.  I found that somewhere and just copied that to 
mine.  It may be the long way but it does work.  I may edit it and try 
it your way but since mine works and I don't move things to much, not 
sure it really matters.


I sometimes like to get things from a working system, such as what you 
posted that you use, because sometimes what is in a guide somewhere may 
not apply to what I am using or even my OS.  May be some subtle 
difference that causes me grief.  Since you use Gentoo, yours is a good 
example to go by.  Should have had that a few months ago when I was 
changing mine over.  ;-)   It would have saved me some typing as you 
pointed out.  lol


Wouldn't happen to have LABELS in your grub.conf file would you?

Dale

:-)  :-)



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Stroller

On 8/11/2010, at 9:34pm, Dale wrote:
 ...
 Wouldn't happen to have LABELS in your grub.conf file would you?

Nope. 

I believe this requires an initramfs - see the February 2009 thread, `Using  
root=LABEL= in grub.conf` for more details of that. I seem to rather have 
an aversion to initramfses.

Stroller.




Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Dale

Stroller wrote:

On 8/11/2010, at 9:34pm, Dale wrote:
   

...
Wouldn't happen to have LABELS in your grub.conf file would you?
 

Nope.

I believe this requires an initramfs - see the February 2009 thread, `Using  
root=LABEL= in grub.conf` for more details of that. I seem to rather have 
an aversion to initramfses.

Stroller.

   


Yea, I don't like those either.  I think grub2 supports it but I'm not 
sure.  I think that is what I read but it may be just on a todo list or 
something.  Maybe one day.


Dale

:-)  :-)



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Neil Bothwick
On Mon, 08 Nov 2010 15:34:08 -0600, Dale wrote:

 Well, it does work since it booted as recent as last night when I 
 updated my kernel.  I found that somewhere and just copied that to 
 mine.  It may be the long way but it does work.  I may edit it and try 
 it your way but since mine works and I don't move things to much, not 
 sure it really matters.

Labels are stored in the filesystem, so LABEL= should always work.

/dev/disk/by-label/ is created by udev rules, so it won't work if
anything goes wrong with your udev rules or if you have to boot with
init=/bin/sh.


-- 
Neil Bothwick

Tagline stealing is the sincerest form of flattery.


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Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Dale

Neil Bothwick wrote:

On Mon, 08 Nov 2010 15:34:08 -0600, Dale wrote:

   

Well, it does work since it booted as recent as last night when I
updated my kernel.  I found that somewhere and just copied that to
mine.  It may be the long way but it does work.  I may edit it and try
it your way but since mine works and I don't move things to much, not
sure it really matters.
 

Labels are stored in the filesystem, so LABEL= should always work.

/dev/disk/by-label/ is created by udev rules, so it won't work if
anything goes wrong with your udev rules or if you have to boot with
init=/bin/sh.

   


Guess I better change that soon then.  While udev has been working 
pretty good here lately, we never know what may happen tomorrow.


Thanks for the heads up.

Dale

:-)  :-)



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-08 Thread Stroller

On 8/11/2010, at 10:39pm, Neil Bothwick wrote:

 On Mon, 08 Nov 2010 15:34:08 -0600, Dale wrote:
 
 Well, it does work since it booted as recent as last night when I 
 updated my kernel.  I found that somewhere and just copied that to 
 mine.  It may be the long way but it does work.  I may edit it and try 
 it your way but since mine works and I don't move things to much, not 
 sure it really matters.
 
 Labels are stored in the filesystem, so LABEL= should always work.
 
 /dev/disk/by-label/ is created by udev rules, so it won't work if
 anything goes wrong with your udev rules or if you have to boot with
 init=/bin/sh.

Thanks! I approximately figured this when I made my original posting, but don't 
really feel confident enough about /dev and udev rules to express it properly. 
That's why I just said I'm not sure the configuration is even supposed to 
work.

Stroller.




Re: [gentoo-user] kernel panic on manually built kernel

2010-11-05 Thread dhk
On 11/04/2010 03:25 PM, Alan McKinnon wrote:
 Apparently, though unproven, at 19:36 on Thursday 04 November 2010, dhk did 
 opine thusly:
 
 On 11/04/2010 01:08 PM, Neil Bothwick wrote:
 On Thu, 04 Nov 2010 13:00:21 -0400, dhk wrote:
 The reason I didn't include the exact error is that I can't capture it.

  I'd have to write it on paper and then reboot to the working kernel.

 Which is a lot less work than trying to fix the problem by guesswork.

 I have /boot as ext2 and the rest ext3 with lvm2.

 $ df -k
 Filesystem   1K-blocks  Used Available Use% Mounted on
 /dev/hda3  8262068712028   7130344  10% /
 udev 10240   336  9904   4% /dev
 /dev/mapper/vg-usr15481840  12867912   1827496  88% /usr
 /dev/mapper/vg-home   51606140  42781428   6203272  88% /home
 /dev/mapper/vg-opt 5160576   2635064   2263368  54% /opt
 /dev/mapper/vg-var15481840   2387500  12307908  17% /var
 /dev/mapper/vg-tmp 2064208 68708   1890644   4% /tmp
 shm 512572 0512572   0% /dev/shm

 The ext2 wasn't compiled in, so I compiled it in and rebooted.  I got
 the same error.

 kernel panic - not syncing : VFS: unable to mount root FS on
 unknown-block (2,0)

 This is what I had.
   Second extended fs support   │ │
   │ │* Ext3 journalling file system support
   │ │
   │ │[ ]   Default to 'data=ordered' in ext3
   │ │
   │ │[*]   Ext3 extended attributes
   │ │
   │ │[*] Ext3 POSIX Access Control Lists
   │ │
   │ │[*] Ext3 Security Labels

 This is what I added.
 * Second extended fs support   │ │
   │ │[ ]   Ext2 extended attributes (NEW)
   │ │
   │ │[ ]   Ext2 execute in place support (NEW)
   │ │
   │ │* Ext3 journalling file system support
   │ │
   │ │[ ]   Default to 'data=ordered' in ext3
   │ │
   │ │[*]   Ext3 extended attributes
   │ │
   │ │[*] Ext3 POSIX Access Control Lists
   │ │
   │ │[*] Ext3 Security Labels
   │ │

 Thanks,

 --dhk
 
 
 Is your / partition in or out of the lvm?
 
 

The / is out of lvm2 and is ext3, /boot is ext2.




Re: [gentoo-user] kernel panic on manually built kernel

2010-11-05 Thread Alan McKinnon
Apparently, though unproven, at 11:29 on Friday 05 November 2010, dhk did 
opine thusly:

 
  Is your / partition in or out of the lvm?
 
 The / is out of lvm2 and is ext3, /boot is ext2.

Ok, that's the easiest way. Seeing inside lvm at boot-time is no fun.

But I think Niel spotted your real problem already, you do not have chipset 
support built into the kernel.


-- 
alan dot mckinnon at gmail dot com



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-05 Thread dhk
On 11/04/2010 03:51 PM, Neil Bothwick wrote:
 On Thu, 04 Nov 2010 13:36:25 -0400, dhk wrote:
 
 The ext2 wasn't compiled in, so I compiled it in and rebooted.  I got
 the same error.

 kernel panic - not syncing : VFS: unable to mount root FS on
 unknown-block (2,0)
 
 It's saying unknown block, not unknown fs. I suspect you haven't compiled
 in the drivers for your hard disk controller.
 
 

All my hard disks are sata except the main one with the os on it that is
ide.  Is a fairly new disk, may be a year old, but should the following
driver be compiled in?
[ ]   Very old hard disk (MFM/RLL/IDE) driver

I went back to ide a few years ago because I had problems with sata.
First, the system would never boot with more than one sata drive
connected.  There's something call Staggered Spin-up Detection which
load balances the power going to the disks.  The bios would error saying
that there weren't any hard disks, when really they weren't powered up
by time the bios finished checking them.  Second, I broke a couple of
motherboard sata connectors.  Apparently the wire connection to the
connector is tighter than the connector's connection to the motherboard,
they pulled right off the board.




Re: [gentoo-user] kernel panic on manually built kernel

2010-11-05 Thread Alan McKinnon
Apparently, though unproven, at 11:47 on Friday 05 November 2010, dhk did 
opine thusly:

 On 11/04/2010 03:51 PM, Neil Bothwick wrote:
  On Thu, 04 Nov 2010 13:36:25 -0400, dhk wrote:
  The ext2 wasn't compiled in, so I compiled it in and rebooted.  I got
  the same error.
  
  kernel panic - not syncing : VFS: unable to mount root FS on
  unknown-block (2,0)
  
  It's saying unknown block, not unknown fs. I suspect you haven't compiled
  in the drivers for your hard disk controller.
 
 All my hard disks are sata except the main one with the os on it that is
 ide.  Is a fairly new disk, may be a year old, but should the following
 driver be compiled in?
 [ ]   Very old hard disk (MFM/RLL/IDE) driver

No. Those are the ancient drives that shipped with original PCs way way way 
back in the 80s. Remember those monsters that were never bigger than 32M, were 
about 4 inches tall and had gigantic cables that were sensitive to be sneezed 
around? Those were MFM drives.

These days libata does IDE as well. Think of it as a sort of universal wrapper 
around all drives you can buy today and gives a consistent interface. You do 
still need the driver for the IDE chipset which slots in one level lower.


-- 
alan dot mckinnon at gmail dot com



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-05 Thread Neil Bothwick
On Fri, 05 Nov 2010 05:47:42 -0400, dhk wrote:

  It's saying unknown block, not unknown fs. I suspect you haven't
  compiled in the drivers for your hard disk controller.
  

 
 All my hard disks are sata except the main one with the os on it that is
 ide.  Is a fairly new disk, may be a year old, but should the following
 driver be compiled in?
 [ ]   Very old hard disk (MFM/RLL/IDE) driver

It's unlikely, more likely is that you don't have support for your
controller chipset built in. Boot fro the genkernel kernel and run lspci
-k to see which module it uses for the controller, then compile that into
your kernel.

 Second, I broke a couple of
 motherboard sata connectors.  Apparently the wire connection to the
 connector is tighter than the connector's connection to the motherboard,
 they pulled right off the board.

That's happened to me a few times too. Fortunately, they push back on
almost as easily as they pull off.


-- 
Neil Bothwick

WYTYSYDG - What you thought you saw, you didn't get.


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Re: [gentoo-user] kernel panic on manually built kernel

2010-11-05 Thread dhk
On 11/05/2010 06:33 AM, Neil Bothwick wrote:
 On Fri, 05 Nov 2010 05:47:42 -0400, dhk wrote:
 
 It's saying unknown block, not unknown fs. I suspect you haven't
 compiled in the drivers for your hard disk controller.

   

 All my hard disks are sata except the main one with the os on it that is
 ide.  Is a fairly new disk, may be a year old, but should the following
 driver be compiled in?
 [ ]   Very old hard disk (MFM/RLL/IDE) driver
 
 It's unlikely, more likely is that you don't have support for your
 controller chipset built in. Boot fro the genkernel kernel and run lspci
 -k to see which module it uses for the controller, then compile that into
 your kernel.
 
 Second, I broke a couple of
 motherboard sata connectors.  Apparently the wire connection to the
 connector is tighter than the connector's connection to the motherboard,
 they pulled right off the board.
 
 That's happened to me a few times too. Fortunately, they push back on
 almost as easily as they pull off.
 
 
This is what I have.

$ lspci -k
00:00.0 Host bridge: nVidia Corporation nForce3 250Gb Host Bridge (rev a1)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: agpgart-amd64
00:01.0 ISA bridge: nVidia Corporation nForce3 250Gb LPC Bridge (rev a2)
Subsystem: ASUSTeK Computer Inc. K8N-E
00:01.1 SMBus: nVidia Corporation nForce 250Gb PCI System Management
(rev a1)
Subsystem: ASUSTeK Computer Inc. K8N-E
00:02.0 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: ohci_hcd
Kernel modules: ohci-hcd
00:02.1 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: ohci_hcd
Kernel modules: ohci-hcd
00:02.2 USB Controller: nVidia Corporation nForce3 EHCI USB 2.0
Controller (rev a2)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: ehci_hcd
Kernel modules: ehci-hcd
00:05.0 Bridge: nVidia Corporation CK8S Ethernet Controller (rev a2)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: forcedeth
Kernel modules: forcedeth
00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb
AC'97 Audio Controller (rev a1)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: Intel ICH
Kernel modules: snd-intel8x0

I think this may be the missing one(s).  I can't find it in the
list, but the AMD64/PATA is selected to be compiled in.
vv
00:08.0 IDE interface: nVidia Corporation CK8S Parallel ATA Controller
(v2.5) (rev a2)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: AMD_IDE
Kernel modules: pata_acpi, ata_generic, pata_amd
00:0a.0 IDE interface: nVidia Corporation nForce3 Serial ATA Controller
(rev a2)
Subsystem: ASUSTeK Computer Inc. K8N-E
Kernel driver in use: sata_nv
Kernel modules: sata_nv, pata_acpi, ata_generic
^^^

00:0b.0 PCI bridge: nVidia Corporation nForce3 250Gb AGP Host to PCI
Bridge (rev a2)
00:0e.0 PCI bridge: nVidia Corporation nForce3 250Gb PCI-to-PCI Bridge
(rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
01:00.0 VGA compatible controller: nVidia Corporation NV36 [GeForce FX
5700LE] (rev a1)
Kernel driver in use: nvidia
Kernel modules: nvidia
02:07.0 USB Controller: VIA Technologies, Inc. VT82x UHCI USB 1.1
Controller (rev 61)
Subsystem: VIA Technologies, Inc. VT82x UHCI USB 1.1 Controller
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
02:07.1 USB Controller: VIA Technologies, Inc. VT82x UHCI USB 1.1
Controller (rev 61)
Subsystem: VIA Technologies, Inc. VT82x UHCI USB 1.1 Controller
Kernel driver in use: uhci_hcd
Kernel modules: uhci-hcd
02:07.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63)
Subsystem: VIA Technologies, Inc. USB 2.0
Kernel driver in use: ehci_hcd
Kernel modules: ehci-hcd
02:07.3 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306 Fire II IEEE
1394 OHCI Link Layer Controller (rev 46)
Subsystem: VIA Technologies, Inc. VT6306 Fire II IEEE 1394 OHCI Link
Layer Controller
Kernel driver in use: ohci1394
Kernel modules: ohci1394

--dhk



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-05 Thread Volker Armin Hemmann
On Thursday 04 November 2010, dhk wrote:
 I've always used the genkernel, but now am trying to make a manual one.
  I think the kernel is alright since all the default setting seemed
 reasonable and the build was easy enough.  However, when I boot to it I
 get a kernel panic and it complains about the root device /dev/hda3. So
 I think the problem has to do with my parameters or syntax in grub.conf.
  Below are three grub menu options.  The first two have the problem and
 the third is the genkernel that works fine.  Is there something wrong
 with the way the first two are?  Thanks.
 
 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3
 
 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
 splash=verbose video=vesafb:mtrr,ywrap udev
 # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85
 
 # This a genkernel and works
 title Gentoo Linux x86 2.6.34-r6
 root (hd0,0)
 kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
 ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
 video=vesafb:mtrr,ywrap udev
 initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6
 
 --dhk

grub must point to sda3 not hda3



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Dale

dhk wrote:

I've always used the genkernel, but now am trying to make a manual one.
  I think the kernel is alright since all the default setting seemed
reasonable and the build was easy enough.  However, when I boot to it I
get a kernel panic and it complains about the root device /dev/hda3. So
I think the problem has to do with my parameters or syntax in grub.conf.
  Below are three grub menu options.  The first two have the problem and
the third is the genkernel that works fine.  Is there something wrong
with the way the first two are?  Thanks.

# This is a Manually built kernel with default settings.  kernel panic
title Gentoo Linux x86 2.6.34-r12
root (hd0,0)
kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3

# This is a Manually built kernel with default settings.  kernel panic
title Gentoo Linux x86 2.6.34-r12
root (hd0,0)
kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
splash=verbose video=vesafb:mtrr,ywrap udev
# From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85

# This a genkernel and works
title Gentoo Linux x86 2.6.34-r6
root (hd0,0)
kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
video=vesafb:mtrr,ywrap udev
initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6

--dhk


   


When I get a kernel panic, it's usually because I'm pointing to the 
wrong partition or I forgot to include the file system that the root 
partition uses.  Since the one you made and the genkernel match up, I 
would check to make sure you included the correct file system and it is 
BUILT IN not a module.


Hope that helps or someone else comes up with another idea.

Dale

:-)  :-)



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Alan McKinnon
Apparently, though unproven, at 18:34 on Thursday 04 November 2010, dhk did 
opine thusly:

 I've always used the genkernel, but now am trying to make a manual one.
  I think the kernel is alright since all the default setting seemed
 reasonable and the build was easy enough.  However, when I boot to it I
 get a kernel panic and it complains about the root device /dev/hda3. So
 I think the problem has to do with my parameters or syntax in grub.conf.
  Below are three grub menu options.  The first two have the problem and
 the third is the genkernel that works fine.  Is there something wrong
 with the way the first two are?  Thanks.

Why did you think it a good idea to NOT post the *actual* error? 

Your grub entries are correct.

I'll bet money that you built one or more of your chipset drivers, libata, or 
root filesystem driver as a module.

These must not be modules, they must be built-in (otherwise you need an 
initrd)



 
 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3
 
 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
 splash=verbose video=vesafb:mtrr,ywrap udev
 # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85
 
 # This a genkernel and works
 title Gentoo Linux x86 2.6.34-r6
 root (hd0,0)
 kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
 ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
 video=vesafb:mtrr,ywrap udev
 initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6
 
 --dhk

-- 
alan dot mckinnon at gmail dot com



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread dhk
On 11/04/2010 12:52 PM, Alan McKinnon wrote:
 Apparently, though unproven, at 18:34 on Thursday 04 November 2010, dhk did 
 opine thusly:
 
 I've always used the genkernel, but now am trying to make a manual one.
  I think the kernel is alright since all the default setting seemed
 reasonable and the build was easy enough.  However, when I boot to it I
 get a kernel panic and it complains about the root device /dev/hda3. So
 I think the problem has to do with my parameters or syntax in grub.conf.
  Below are three grub menu options.  The first two have the problem and
 the third is the genkernel that works fine.  Is there something wrong
 with the way the first two are?  Thanks.
 
 Why did you think it a good idea to NOT post the *actual* error? 
 
 Your grub entries are correct.
 
 I'll bet money that you built one or more of your chipset drivers, libata, or 
 root filesystem driver as a module.
 
 These must not be modules, they must be built-in (otherwise you need an 
 initrd)
 
 
 

 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3

 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
 splash=verbose video=vesafb:mtrr,ywrap udev
 # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85

 # This a genkernel and works
 title Gentoo Linux x86 2.6.34-r6
 root (hd0,0)
 kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
 ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
 video=vesafb:mtrr,ywrap udev
 initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6

 --dhk
 

Thanks all, I check those suggestions and get back to you.

The reason I didn't include the exact error is that I can't capture it.
 I'd have to write it on paper and then reboot to the working kernel.
By then it doesn't seem to be in any of the logs.  I'll see what I can
do about that.

Thanks again.

--dhk



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Neil Bothwick
On Thu, 04 Nov 2010 13:00:21 -0400, dhk wrote:

 The reason I didn't include the exact error is that I can't capture it.
  I'd have to write it on paper and then reboot to the working kernel.

Which is a lot less work than trying to fix the problem by guesswork.


-- 
Neil Bothwick

Velilind's Laws of Experimentation:
1. If reproducibility may be a problem, conduct the test only once.
2. If a straight line fit is required, obtain only two data points.


signature.asc
Description: PGP signature


Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread dhk
On 11/04/2010 01:08 PM, Neil Bothwick wrote:
 On Thu, 04 Nov 2010 13:00:21 -0400, dhk wrote:
 
 The reason I didn't include the exact error is that I can't capture it.
  I'd have to write it on paper and then reboot to the working kernel.
 
 Which is a lot less work than trying to fix the problem by guesswork.
 
 

I have /boot as ext2 and the rest ext3 with lvm2.

$ df -k
Filesystem   1K-blocks  Used Available Use% Mounted on
/dev/hda3  8262068712028   7130344  10% /
udev 10240   336  9904   4% /dev
/dev/mapper/vg-usr15481840  12867912   1827496  88% /usr
/dev/mapper/vg-home   51606140  42781428   6203272  88% /home
/dev/mapper/vg-opt 5160576   2635064   2263368  54% /opt
/dev/mapper/vg-var15481840   2387500  12307908  17% /var
/dev/mapper/vg-tmp 2064208 68708   1890644   4% /tmp
shm 512572 0512572   0% /dev/shm

The ext2 wasn't compiled in, so I compiled it in and rebooted.  I got
the same error.

kernel panic - not syncing : VFS: unable to mount root FS on
unknown-block (2,0)

This is what I had.
  Second extended fs support   │ │
  │ │* Ext3 journalling file system support
  │ │
  │ │[ ]   Default to 'data=ordered' in ext3
  │ │
  │ │[*]   Ext3 extended attributes
  │ │
  │ │[*] Ext3 POSIX Access Control Lists
  │ │
  │ │[*] Ext3 Security Labels

This is what I added.
* Second extended fs support   │ │
  │ │[ ]   Ext2 extended attributes (NEW)
  │ │
  │ │[ ]   Ext2 execute in place support (NEW)
  │ │
  │ │* Ext3 journalling file system support
  │ │
  │ │[ ]   Default to 'data=ordered' in ext3
  │ │
  │ │[*]   Ext3 extended attributes
  │ │
  │ │[*] Ext3 POSIX Access Control Lists
  │ │
  │ │[*] Ext3 Security Labels
  │ │

Thanks,

--dhk



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread covici
Dale rdalek1...@gmail.com wrote:

 dhk wrote:
  I've always used the genkernel, but now am trying to make a manual one.
I think the kernel is alright since all the default setting seemed
  reasonable and the build was easy enough.  However, when I boot to it I
  get a kernel panic and it complains about the root device /dev/hda3. So
  I think the problem has to do with my parameters or syntax in grub.conf.
Below are three grub menu options.  The first two have the problem and
  the third is the genkernel that works fine.  Is there something wrong
  with the way the first two are?  Thanks.
 
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3
 
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
  splash=verbose video=vesafb:mtrr,ywrap udev
  # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85
 
  # This a genkernel and works
  title Gentoo Linux x86 2.6.34-r6
  root (hd0,0)
  kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
  ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
  video=vesafb:mtrr,ywrap udev
  initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6
 
  --dhk
 
 
 
 
 When I get a kernel panic, it's usually because I'm pointing to the
 wrong partition or I forgot to include the file system that the root
 partition uses.  Since the one you made and the genkernel match up, I
 would check to make sure you included the correct file system and it
 is BUILT IN not a module.
 
 Hope that helps or someone else comes up with another idea.
He does not have the ramdisk or initrd in his manual ones.  That would
do it right there.  Be sure to generate the ramdisk as well.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

 John Covici
 cov...@ccs.covici.com



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread dhk
On 11/04/2010 02:12 PM, cov...@ccs.covici.com wrote:
 Dale rdalek1...@gmail.com wrote:
 
 dhk wrote:
 I've always used the genkernel, but now am trying to make a manual one.
   I think the kernel is alright since all the default setting seemed
 reasonable and the build was easy enough.  However, when I boot to it I
 get a kernel panic and it complains about the root device /dev/hda3. So
 I think the problem has to do with my parameters or syntax in grub.conf.
   Below are three grub menu options.  The first two have the problem and
 the third is the genkernel that works fine.  Is there something wrong
 with the way the first two are?  Thanks.

 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3

 # This is a Manually built kernel with default settings.  kernel panic
 title Gentoo Linux x86 2.6.34-r12
 root (hd0,0)
 kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
 splash=verbose video=vesafb:mtrr,ywrap udev
 # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85

 # This a genkernel and works
 title Gentoo Linux x86 2.6.34-r6
 root (hd0,0)
 kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
 ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
 video=vesafb:mtrr,ywrap udev
 initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6

 --dhk




 When I get a kernel panic, it's usually because I'm pointing to the
 wrong partition or I forgot to include the file system that the root
 partition uses.  Since the one you made and the genkernel match up, I
 would check to make sure you included the correct file system and it
 is BUILT IN not a module.

 Hope that helps or someone else comes up with another idea.
 He does not have the ramdisk or initrd in his manual ones.  That would
 do it right there.  Be sure to generate the ramdisk as well.
 

The documentation doesn't say to use ramdisk or initrd for a manual
kernel, only the genkernel.




Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread covici
dhk dhk...@optonline.net wrote:

 On 11/04/2010 02:12 PM, cov...@ccs.covici.com wrote:
  Dale rdalek1...@gmail.com wrote:
  
  dhk wrote:
  I've always used the genkernel, but now am trying to make a manual one.
I think the kernel is alright since all the default setting seemed
  reasonable and the build was easy enough.  However, when I boot to it I
  get a kernel panic and it complains about the root device /dev/hda3. So
  I think the problem has to do with my parameters or syntax in grub.conf.
Below are three grub menu options.  The first two have the problem and
  the third is the genkernel that works fine.  Is there something wrong
  with the way the first two are?  Thanks.
 
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3
 
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
  splash=verbose video=vesafb:mtrr,ywrap udev
  # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85
 
  # This a genkernel and works
  title Gentoo Linux x86 2.6.34-r6
  root (hd0,0)
  kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
  ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
  video=vesafb:mtrr,ywrap udev
  initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6
 
  --dhk
 
 
 
 
  When I get a kernel panic, it's usually because I'm pointing to the
  wrong partition or I forgot to include the file system that the root
  partition uses.  Since the one you made and the genkernel match up, I
  would check to make sure you included the correct file system and it
  is BUILT IN not a module.
 
  Hope that helps or someone else comes up with another idea.
  He does not have the ramdisk or initrd in his manual ones.  That would
  do it right there.  Be sure to generate the ramdisk as well.
  
 
 The documentation doesn't say to use ramdisk or initrd for a manual
 kernel, only the genkernel.
But if the configs are the same, you need to do the same things, so
generate your ramdisk and see what happens.  I do this all the time,
just use genkernel to generate the ramdisk and do all other things
manually.  I just make oldconfig when I upgrade and do make Bzimage and
make modules and make modules_install and copy the kernel to the right
place and update my lilo.conf.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

 John Covici
 cov...@ccs.covici.com



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Yohan Pereira
On Thursday 04 November 2010 11:49:07 pm dhk wrote:

stupid queston but did you select the appropriate sata drivers ?

i ran into a similar problem just about an hr back becuase i forgot to include 
those .

-- 
- Yohan Pereira.



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Alan McKinnon
Apparently, though unproven, at 19:00 on Thursday 04 November 2010, dhk did 
opine thusly:

 On 11/04/2010 12:52 PM, Alan McKinnon wrote:
  Apparently, though unproven, at 18:34 on Thursday 04 November 2010, dhk
  did
  
  opine thusly:
  I've always used the genkernel, but now am trying to make a manual one.
  
   I think the kernel is alright since all the default setting seemed
  
  reasonable and the build was easy enough.  However, when I boot to it I
  get a kernel panic and it complains about the root device /dev/hda3. So
  I think the problem has to do with my parameters or syntax in grub.conf.
  
   Below are three grub menu options.  The first two have the problem and
  
  the third is the genkernel that works fine.  Is there something wrong
  with the way the first two are?  Thanks.
  
  Why did you think it a good idea to NOT post the *actual* error?
  
  Your grub entries are correct.
  
  I'll bet money that you built one or more of your chipset drivers,
  libata, or root filesystem driver as a module.
  
  These must not be modules, they must be built-in (otherwise you need an
  initrd)
  
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3
  
  # This is a Manually built kernel with default settings.  kernel panic
  title Gentoo Linux x86 2.6.34-r12
  root (hd0,0)
  kernel /boot/kernel-2.6.34-gentoo-r12 root=/dev/hda3 vga=791
  splash=verbose video=vesafb:mtrr,ywrap udev
  # From Documentation: video=uvesafb:mtrr:3,ywrap,1024x768...@85
  
  # This a genkernel and works
  title Gentoo Linux x86 2.6.34-r6
  root (hd0,0)
  kernel /boot/kernel-genkernel-x86_64-2.6.34-gentoo-r6 init=/linuxrc
  ramdisk=8192 real_root=/dev/hda3 vga=791 splash=verbose
  video=vesafb:mtrr,ywrap udev
  initrd /boot/initramfs-genkernel-x86_64-2.6.34-gentoo-r6
  
  --dhk
 
 Thanks all, I check those suggestions and get back to you.
 
 The reason I didn't include the exact error is that I can't capture it.
  I'd have to write it on paper and then reboot to the working kernel.
 By then it doesn't seem to be in any of the logs.  I'll see what I can
 do about that.

The usual error is something like

panic: can't find root filesystem (dev/hda3)

or similar. It's so common when building your own kernel the first time, that 
if you post the gist of the error (doesn't have to be 100% exact), you'll get 
10 replies in an error from folk who've all made the same mistake themselves. 
Some of us more than once...

It's always missing drivers or (more usually) drivers built as modules.


-- 

alan dot mckinnon at gmail dot com



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Alan McKinnon
Apparently, though unproven, at 19:36 on Thursday 04 November 2010, dhk did 
opine thusly:

 On 11/04/2010 01:08 PM, Neil Bothwick wrote:
  On Thu, 04 Nov 2010 13:00:21 -0400, dhk wrote:
  The reason I didn't include the exact error is that I can't capture it.
  
   I'd have to write it on paper and then reboot to the working kernel.
  
  Which is a lot less work than trying to fix the problem by guesswork.
 
 I have /boot as ext2 and the rest ext3 with lvm2.
 
 $ df -k
 Filesystem   1K-blocks  Used Available Use% Mounted on
 /dev/hda3  8262068712028   7130344  10% /
 udev 10240   336  9904   4% /dev
 /dev/mapper/vg-usr15481840  12867912   1827496  88% /usr
 /dev/mapper/vg-home   51606140  42781428   6203272  88% /home
 /dev/mapper/vg-opt 5160576   2635064   2263368  54% /opt
 /dev/mapper/vg-var15481840   2387500  12307908  17% /var
 /dev/mapper/vg-tmp 2064208 68708   1890644   4% /tmp
 shm 512572 0512572   0% /dev/shm
 
 The ext2 wasn't compiled in, so I compiled it in and rebooted.  I got
 the same error.
 
 kernel panic - not syncing : VFS: unable to mount root FS on
 unknown-block (2,0)
 
 This is what I had.
   Second extended fs support   │ │
   │ │* Ext3 journalling file system support
   │ │
   │ │[ ]   Default to 'data=ordered' in ext3
   │ │
   │ │[*]   Ext3 extended attributes
   │ │
   │ │[*] Ext3 POSIX Access Control Lists
   │ │
   │ │[*] Ext3 Security Labels
 
 This is what I added.
 * Second extended fs support   │ │
   │ │[ ]   Ext2 extended attributes (NEW)
   │ │
   │ │[ ]   Ext2 execute in place support (NEW)
   │ │
   │ │* Ext3 journalling file system support
   │ │
   │ │[ ]   Default to 'data=ordered' in ext3
   │ │
   │ │[*]   Ext3 extended attributes
   │ │
   │ │[*] Ext3 POSIX Access Control Lists
   │ │
   │ │[*] Ext3 Security Labels
   │ │
 
 Thanks,
 
 --dhk


Is your / partition in or out of the lvm?


-- 
alan dot mckinnon at gmail dot com



Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Neil Bothwick
On Thu, 04 Nov 2010 13:36:25 -0400, dhk wrote:

 The ext2 wasn't compiled in, so I compiled it in and rebooted.  I got
 the same error.
 
 kernel panic - not syncing : VFS: unable to mount root FS on
 unknown-block (2,0)

It's saying unknown block, not unknown fs. I suspect you haven't compiled
in the drivers for your hard disk controller.


-- 
Neil Bothwick

Philosophical error: Demonstrate the existence of a key to continue


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Re: [gentoo-user] kernel panic on manually built kernel

2010-11-04 Thread Stroller

On 4/11/2010, at 5:36pm, dhk wrote:
 ...
 This is what I had.
   Second extended fs support   │ │
  │ │* Ext3 journalling file system support
  │ │
  │ │[ ]   Default to 'data=ordered' in ext3
  │ │
  │ │[*]   Ext3 extended attributes
  │ │
  │ │[*] Ext3 POSIX Access Control Lists
  │ │
  │ │[*] Ext3 Security Labels
 
 This is what I added.
 * Second extended fs support   │ │
  │ │[ ]   Ext2 extended attributes (NEW)
  │ │
  │ │[ ]   Ext2 execute in place support (NEW)
  │ │
  │ │* Ext3 journalling file system support
  │ │
  │ │[ ]   Default to 'data=ordered' in ext3
  │ │
  │ │[*]   Ext3 extended attributes
  │ │
  │ │[*] Ext3 POSIX Access Control Lists
  │ │
  │ │[*] Ext3 Security Labels
  │ │

The kernel configuration is not terribly readable when posted in this format. 
Might I suggest posting the whole .config file as an attachment, perhaps 
gzipped? You can transfer it from the non-booting machine to the PC on which 
you have internet access by using scp from the LiveCD.

Stroller.