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modifying kernel cause system panic unable to boot
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txykumat
Tux's lil' helper
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Joined: 24 Nov 2014
Posts: 104

PostPosted: Wed Jan 28, 2015 4:27 pm    Post subject: modifying kernel cause system panic unable to boot Reply with quote

error is common one...sorry. munt VFS file system error, blinking cursur on the top left. After I use genkernel all, then if I go to /usr/src/linux and do make menuconfig to add things like support for KVM, my machine become unbootable. Why is this? What am I doiing wrong? Making one change in kernel .config file should not make machine un-bootable...

just wondering ...
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Roman_Gruber
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Joined: 03 Oct 2006
Posts: 3846
Location: Austro Bavaria

PostPosted: Wed Jan 28, 2015 7:08 pm    Post subject: Reply with quote

you could try genkernel next.

anyway why do not you try to build your own kernel?
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teliot
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Joined: 26 Jan 2015
Posts: 6
Location: USA

PostPosted: Wed Jan 28, 2015 7:28 pm    Post subject: Reply with quote

can you post a link to your /usr/src/linux/.config in a pastebin?
what does "eselect kernel list" say?
what is the output of "fdisk -l"
is the initrd setup correctly in grub?
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txykumat
Tux's lil' helper
Tux's lil' helper


Joined: 24 Nov 2014
Posts: 104

PostPosted: Wed Jan 28, 2015 8:34 pm    Post subject: Reply with quote

tw04l124 wrote:
you could try genkernel next.

anyway why do not you try to build your own kernel?


I thught it was Gentoo things to do and thought everyoone compiles ownn kernel...whens some option is missing from kernel I have to go in and manually make changes and make make && modules_install
Code:
toru@crux ~ $ eselect kernel list
Available kernel symlink targets:
  [1]   linux-debian-sources-3.16.2 *
toru@crux ~ $


.config file is at: http://pastebin.com/Yn4Ea3Fv

Code:

crux toru # fdisk -l /dev/sda

Disk /dev/sda: 111.8 GiB, 120034123776 bytes, 234441648 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 319581F4-33E2-424B-BA43-EF52797566EE

Device        Start       End  Sectors  Size Type
/dev/sda1      2048   1026047  1024000  500M Linux filesystem
/dev/sda2   1026048   9414655  8388608    4G Linux swap
/dev/sda3   9414656  72318975 62904320   30G Linux filesystem
/dev/sda4  72318976 124745727 52426752   25G Linux filesystem

crux toru #


Code:
crux grub # cat/fstab
bash: cat/fstab: No such file or directory
crux grub # cat /etc/fstab
# /etc/fstab: static file system information.
#
# The root filesystem should have a pass number of either 0 or 1.
# All other filesystems should have a pass number of 0 or greater than 1.
#
# NOTE: If your BOOT partition is ReiserFS, add the notail option to opts.
#
# See the manpage fstab(5) for more information.
#
# <fs>                  <mountpoint>    <type>          <opts>          <dump/pass>

/dev/sda1               /boot           vfat            auto,noatime    1 2
/dev/sda2               none            swap            sw              0 0
/dev/sda3               /               xfs             noatime         0 1
#/dev/cdrom             /mnt/cdrom      auto            noauto,ro       0 0


Code:

set timeout=3

  insmod part_gpt
  insmod fat
  set root=(hostdisk//dev/sda,gpt1)
  search --no-floppy --fs-uuid --set 7DAF-19B0
if loadfont /grub/unifont.pf2; then
   set gfxmode=640x480
   insmod all_video
   terminal_output gfxterm
fi

set menu_color_normal=cyan/blue
set menu_color_highlight=blue/cyan

menuentry "Funtoo Linux - bzImage" {
  insmod part_gpt
  insmod fat
  set root=(hostdisk//dev/sda,gpt1)
  search --no-floppy --fs-uuid --set 7DAF-19B0
  linux /bzImage rootfstype=xfs root=/dev/sda3
  set gfxpayload=keep
}

menuentry "Funtoo Linux genkernel - kernel-debian-sources-x86_64-3.16.2-3" {
  insmod part_gpt
  insmod fat
  set root=(hostdisk//dev/sda,gpt1)
  search --no-floppy --fs-uuid --set 7DAF-19B0
  linux /kernel-debian-sources-x86_64-3.16.2-3 real_root=/dev/sda3
  initrd /initramfs-debian-sources-x86_64-3.16.2-3
  set gfxpayload=keep
}
set default=0

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Code:

crux grub # ls -l /boot
total 18536
drwxr-xr-x 3 root root    4096 Jan 25 20:47 EFI
-rwxr-xr-x 1 root root 2838830 Jan 26 15:54 System.map-debian-sources-x86_64-3.16.2-3
-rwxr-xr-x 1 root root 5397856 Jan 27 10:23 bzImage
drwxr-xr-x 6 root root    4096 Jan 27 12:29 grub
-rwxr-xr-x 1 root root 7397280 Jan 26 16:29 initramfs-debian-sources-x86_64-3.16.2-3
-rwxr-xr-x 1 root root 3333408 Jan 26 15:54 kernel-debian-sources-x86_64-3.16.2-3
crux grub #
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Ant P.
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Joined: 18 Apr 2009
Posts: 6920

PostPosted: Wed Jan 28, 2015 9:05 pm    Post subject: Reply with quote

There's your problem - Funtoo overwrote your Gentoo installation with its own grub config.
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txykumat
Tux's lil' helper
Tux's lil' helper


Joined: 24 Nov 2014
Posts: 104

PostPosted: Wed Jan 28, 2015 10:00 pm    Post subject: Reply with quote

Ant P. wrote:
There's your problem - Funtoo overwrote your Gentoo installation with its own grub config.


Ohhhhh. I am so sorry for this but this is funtoo installation. I hope it was OK to seek help here with more eye balls
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54028
Location: 56N 3W

PostPosted: Wed Jan 28, 2015 10:28 pm    Post subject: Reply with quote

Moved from Kernel & Hardware to Unsupported Software.
Funtoo isn't Gentoo and we don't want gentoo users being mislead.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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