Re: LFS grub start error

2011-01-08 Thread Rosario Turco 
Bruce Dubbs bruce.dubbs at gmail.com writes:

 
 Rosario Turco wrote:
 
 
 What partition did you use for LFS?  /dev/sdb1?  Try all variations of
 root=/dev/sd??.
 
 fstab at this point doesn't matter.
 
-- Bruce


OK thanks
I have found the problem

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Re: LFS grub start error

2011-01-08 Thread Brian Winfrey 
On Sat, Jan 8, 2011 at 7:24 AM, Rosario Turco rosario_tu...@virgilio.it wrote:
 Bruce Dubbs bruce.dubbs at gmail.com writes:


 Rosario Turco wrote:


 What partition did you use for LFS?  /dev/sdb1?  Try all variations of
 root=/dev/sd??.

 fstab at this point doesn't matter.

    -- Bruce


 OK thanks
 I have found the problem

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what was the problem/solution?
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Re: LFS grub start error

2011-01-08 Thread Bruce Dubbs 
Rosario Turco wrote:

Please ask on lfs-support.

 I have seen with 'c' on prompt 
 
 No filesystem could mount root, tried: ext3 vfat msdos iso9960
 
 Kernel panic - not syncing: VFS: Unable to mount root fs at
 unknown-block(8,4)

This is a kernel message, so at this point grub's job is done.  It has 
loaded the kerenl properly.

 Now i have an important question: I have partitioned with ext4. Is this the
 problem? 

The fs support must be built into the kernel.

   -- Bruce
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Re: LFS grub start error

2011-01-06 Thread Rosario Turco 
Bruce Dubbs bruce.dubbs at gmail.com writes:


-- Bruce

I haven't got /dev/sda4, my /dev/sda has got only two (sda1 e sda2)
brw-rw 1 root daemon 8, 0 Jan  2 18:31 /dev/sda
brw-rw 1 root daemon 8, 1 Jan  2 18:31 /dev/sda1
brw-rw 1 root daemon 8, 2 Jan  2 18:31 /dev/sda2
brw-rw 1 root daemon 8, 16 Jan  2 18:31 /dev/sdb
brw-rw 1 root daemon 8, 17 Jan  2 18:31 /dev/sdb1
brw-rw 1 root daemon 8, 18 Jan  2 18:31 /dev/sdb2
brw-rw 1 root daemon 8, 19 Jan  2 18:31 /dev/sdb3
brw-rw 1 root daemon 8, 20 Jan  2 18:31 /dev/sdb4

So i have modified grub.cfg with
set root=(hd0,1)
and
root=/dev/sda2

with boot on /dev/sda1

In fstab i have done the same   
/dev/sda1 /boot ext3 ...
/dev/sda2 /   ext3 

Now i obtain this error:
.. (i cannot read all because is very speed ... How can read all? 
Is there alog?)

list of all partions:
0800 sda
0801 sda1
0802 sda2
0803 sda3
0804 sda4
0b00 sr0 driver
No filesystem could mount root, tried: ext3 vfat msdos iso9660
Kernel panic: not syncing: VFS: Unable to mount root fs on unknown block(8,2)

I am blocked.

Then i cannot use 8.4.3 Testing teh configuration with Fedora 14, because
/sbin/reboot  restarts all and doesn't show prompt grub 





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Re: LFS grub start error

2011-01-06 Thread Andrew Benton 
On Thu, 6 Jan 2011 10:56:23 + (UTC)
Rosario Turco rosario_tu...@virgilio.it wrote:

 Bruce Dubbs bruce.dubbs at gmail.com writes:
 
 
 -- Bruce
 
 I haven't got /dev/sda4, my /dev/sda has got only two (sda1 e sda2)
 brw-rw 1 root daemon 8, 0 Jan  2 18:31 /dev/sda
 brw-rw 1 root daemon 8, 1 Jan  2 18:31 /dev/sda1
 brw-rw 1 root daemon 8, 2 Jan  2 18:31 /dev/sda2
 brw-rw 1 root daemon 8, 16 Jan  2 18:31 /dev/sdb
 brw-rw 1 root daemon 8, 17 Jan  2 18:31 /dev/sdb1
 brw-rw 1 root daemon 8, 18 Jan  2 18:31 /dev/sdb2
 brw-rw 1 root daemon 8, 19 Jan  2 18:31 /dev/sdb3
 brw-rw 1 root daemon 8, 20 Jan  2 18:31 /dev/sdb4
 
 So i have modified grub.cfg with
 set root=(hd0,1)
 and
 root=/dev/sda2
 
 with boot on /dev/sda1
 
 In fstab i have done the same   
 /dev/sda1 /boot ext3 ...
 /dev/sda2 /   ext3 
 
 Now i obtain this error:
 .. (i cannot read all because is very speed ... How can read all? 
 Is there alog?)
 
 list of all partions:
 0800 sda
 0801 sda1
 0802 sda2
 0803 sda3
 0804 sda4

The kernel sees 4 partitions on /dev/sda. 

 0b00 sr0 driver
 No filesystem could mount root, tried: ext3 vfat msdos iso9660
 Kernel panic: not syncing: VFS: Unable to mount root fs on unknown block(8,2)

Clearly, what your host Fedora system sees as /dev/sdb your LFS kernel
sees as /dev/sda. Try altering your grub.cfg to pass your LFS kernel
the option root=/dev/sdb2

linux /boot/vmlinux-lfs root=/dev/sdb2

Andy
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Re: LFS grub start error

2011-01-06 Thread Bruce Dubbs 
Rosario Turco wrote:

 I haven't got /dev/sda4, my /dev/sda has got only two (sda1 e sda2)
 brw-rw 1 root daemon 8, 0 Jan  2 18:31 /dev/sda
 brw-rw 1 root daemon 8, 1 Jan  2 18:31 /dev/sda1
 brw-rw 1 root daemon 8, 2 Jan  2 18:31 /dev/sda2
 brw-rw 1 root daemon 8, 16 Jan  2 18:31 /dev/sdb
 brw-rw 1 root daemon 8, 17 Jan  2 18:31 /dev/sdb1
 brw-rw 1 root daemon 8, 18 Jan  2 18:31 /dev/sdb2
 brw-rw 1 root daemon 8, 19 Jan  2 18:31 /dev/sdb3
 brw-rw 1 root daemon 8, 20 Jan  2 18:31 /dev/sdb4
 
 So i have modified grub.cfg with
 set root=(hd0,1)
 and
 root=/dev/sda2
 
 with boot on /dev/sda1
 
 In fstab i have done the same   
 /dev/sda1 /boot ext3 ...
 /dev/sda2 /   ext3 
 
 Now i obtain this error:
 .. (i cannot read all because is very speed ... How can read all? 
 Is there alog?)
 
 list of all partions:
 0800 sda
 0801 sda1
 0802 sda2
 0803 sda3
 0804 sda4
 0b00 sr0 driver
 No filesystem could mount root, tried: ext3 vfat msdos iso9660
 Kernel panic: not syncing: VFS: Unable to mount root fs on unknown block(8,2)
 
 I am blocked.
 
 Then i cannot use 8.4.3 Testing teh configuration with Fedora 14, because
 /sbin/reboot  restarts all and doesn't show prompt grub 

Do you get a menu before it starts to build?  If so type 'c' when it 
comes up and enter commands there.

I'd also recommend cutting down the grub.cfg file to the minimum and 
posting it here,  You really only need something like this to start:

insmod ext2
set root=(hd0,1)

menuentry Linux 2.6.36.2-lfs {
 linux /linux-2.6.36.2-lfs root=/dev/sda1 ro

But it really sounds like you are booting, but there is a problem with 
the parameters.  Note that the 'set root=(hd0,1)' is for grub and 
'root=/dev/sda1' is for the linux kernel.

   -- Bruce

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Re: LFS grub start error

2011-01-06 Thread Rosario Turco 
Bruce Dubbs bruce.dubbs at gmail.com writes:

 
 Rosario Turco wrote:
 
  I haven't got /dev/sda4, my /dev/sda has got only two (sda1 e sda2)
  brw-rw 1 root daemon 8, 0 Jan  2 18:31 /dev/sda
  brw-rw 1 root daemon 8, 1 Jan  2 18:31 /dev/sda1
  brw-rw 1 root daemon 8, 2 Jan  2 18:31 /dev/sda2
  brw-rw 1 root daemon 8, 16 Jan  2 18:31 /dev/sdb
  brw-rw 1 root daemon 8, 17 Jan  2 18:31 /dev/sdb1
  brw-rw 1 root daemon 8, 18 Jan  2 18:31 /dev/sdb2
  brw-rw 1 root daemon 8, 19 Jan  2 18:31 /dev/sdb3
  brw-rw 1 root daemon 8, 20 Jan  2 18:31 /dev/sdb4
  
  So i have modified grub.cfg with
  set root=(hd0,1)
  and
  root=/dev/sda2
  
  with boot on /dev/sda1
  
  In fstab i have done the same   
  /dev/sda1 /boot ext3 ...
  /dev/sda2 /   ext3 
  
  Now i obtain this error:
  .. (i cannot read all because is very speed ... How can read all? 
  Is there alog?)
  
  list of all partions:
  0800 sda
  0801 sda1
  0802 sda2
  0803 sda3
  0804 sda4
  0b00 sr0 driver
  No filesystem could mount root, tried: ext3 vfat msdos iso9660
  Kernel panic: not syncing: VFS: Unable to mount root fs on unknown 
  block(8,2)
  
  I am blocked.
  
  Then i cannot use 8.4.3 Testing teh configuration with Fedora 14, because
  /sbin/reboot  restarts all and doesn't show prompt grub 
 
 Do you get a menu before it starts to build?  If so type 'c' when it 
 comes up and enter commands there.
 
 I'd also recommend cutting down the grub.cfg file to the minimum and 
 posting it here,  You really only need something like this to start:
 
 insmod ext2
 set root=(hd0,1)
 
 menuentry Linux 2.6.36.2-lfs {
  linux /linux-2.6.36.2-lfs root=/dev/sda1 ro
 
 But it really sounds like you are booting, but there is a problem with 
 the parameters.  Note that the 'set root=(hd0,1)' is for grub and 
 'root=/dev/sda1' is for the linux kernel.
 
-- Bruce
 

 
I have reduced grub.cfg at minimum as your suggest.

Now the error is:

xxx] md: ... autorun DONE.
VFS: Cannot open root device sda1 or un-known block(8,1)
Please append a correct root= boot options. Here are the available partitions:

0800 n sda driver: sd
0802 sda2
0803 sda3
0804 sda4
0b00  sr0 driver: sr
No filesystem could mount root, tried: ext3 vfat msdos iso9660
Kernel panic: not syncing: VFS: Unable to mount root fs on unknown block(8,1)

GRUB.CFG
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  load_env
fi
set default=0
if [ ${prev_saved_entry} ]; then
  set saved_entry=${prev_saved_entry}
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z ${boot_once} ]; then
saved_entry=${chosen}
save_env saved_entry
  fi
}
insmod ext2
set root='(hd1,1)'
set timeout=5
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry GNU/Linux, with Linux 2.6.36-lfs-6.7 --class gnu-linux --class gnu
--class os {
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set c544afb8-6417-4d14-89e0-5aa35173c3c3
echoLoading Linux 2.6.36-lfs-6.7 ...
linux   /boot/vmlinux-2.6.36-lfs-6.7 root=/dev/sda1 ro  
}
### END /etc/grub.d/10_linux ###


FSTAB
/dev/sdb1 / ext3 defaults 1 1
/dev/sdb2 /home ext3 defaults 1 1
/dev/sdb3 swap swap pri=1 0 0 
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devpts /dev/pts devpts gid=4,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0

My /dev now is:
/dev/sda
/dev/sda1
/dev/sda2
/dev/sdb
/dev/sdb1
/dev/sdb2
/dev/sdb3   
 
Is it possible to see a log of the complete error? For example the output of
dmesg ...






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Re: LFS grub start error

2011-01-06 Thread Bruce Dubbs 
Rosario Turco wrote:

 Is it possible to see a log of the complete error? For example the output of
 dmesg ...

Until you get it to boot, no.  If it can't mount /, where would it write 
to?

I don't think you understand.  Make a grub.cfg file that is exactly 5 
lines long:

insmod ext2
set root='(hd0,1)'
menuentry LFS {
   linux   /boot/vmlinux-2.6.36-lfs-6.7 root=/dev/sda1 ro
}

What partition did you use for LFS?  /dev/sdb1?  Try all variations of
root=/dev/sd??.

fstab at this point doesn't matter.

   -- Bruce
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LFS grub start error

2011-01-02 Thread Rosario Turco 
 created a virtual machine with Fedora 14 guest host a filesystem with no errors
everything is set up in LFS 6.7 Chapter 9. Kernel is ok.

When I mount the new virtual machine obtained LFS, I get errors because I did
not understand how to configure fstab and grub.cfg

For LFS I have created these partitions on virtual machine:
/boot  /dev/sdb1
/home  /dev/sdb2
/swap  /dev/sdb3
/LFS   /dev/sdb4

My actual /etc/fstab  is:

# Begin /etc/fstab
# file system mount-point type options dump fsck
# order
/dev/sdb1 /boot ext3 defaults 1 1
/dev/sdb3 /home ext3 defaults 1 1
/dev/sdb4 / ext3 defaults 1 1
/dev/sdb2 swap swap pri=1 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devpts /dev/pts devpts gid=4,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
none /proc/bus/usb usbfs devgid=46,devmode=664 0 0
# End /etc/fstab

My /boot/grub/grub.cfg is:
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  load_env
fi
set default=0
if [ ${prev_saved_entry} ]; then
  set saved_entry=${prev_saved_entry}
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z ${boot_once} ]; then
saved_entry=${chosen}
/boot/grub/grub.cfg [readonly] 60L, 1772C
save_env saved_entry
  fi
}
insmod ext2
set root='(hd1,4)'
search --no-floppy --fs-uuid --set c544afb8-6417-4d14-89e0-5aa35173c3c3
set locale_dir=($root)/boot/grub/locale
set lang=
insmod gettext
set timeout=5
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry GNU/Linux, with Linux 2.6.36-lfs-6.7 --class gnu-linux --class gnu
--class os {
insmod ext2
set root='(hd1,4)'
search --no-floppy --fs-uuid --set c544afb8-6417-4d14-89e0-5aa35173c3c3
echoLoading Linux 2.6.36-lfs-6.7 ...
linux   /boot/vmlinux-2.6.36-lfs-6.7 root=/dev/sdb4 ro  
}
menuentry GNU/Linux, with Linux 2.6.36-lfs-6.7 (recovery mode) --class
gnu-linux --class gnu --class os {
insmod ext2
set root='(hd1,4)'
search --no-floppy --fs-uuid --set c544afb8-6417-4d14-89e0-5aa35173c3c3
echoLoading Linux 2.6.36-lfs-6.7 ...
linux   /boot/vmlinux-2.6.36-lfs-6.7 root=/dev/sdb4 ro single 
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

My /dev is:
brw-rw 1 root daemon 8, 0 Jan  2 18:31 /dev/sda
brw-rw 1 root daemon 8, 1 Jan  2 18:31 /dev/sda1
brw-rw 1 root daemon 8, 2 Jan  2 18:31 /dev/sda2
brw-rw 1 root daemon 8, 16 Jan  2 18:31 /dev/sdb
brw-rw 1 root daemon 8, 17 Jan  2 18:31 /dev/sdb1
brw-rw 1 root daemon 8, 18 Jan  2 18:31 /dev/sdb2
brw-rw 1 root daemon 8, 19 Jan  2 18:31 /dev/sdb3
brw-rw 1 root daemon 8, 20 Jan  2 18:31 /dev/sdb4

The error is:
VFS: cannot open root device sdb4 or unknown block (2,0)
Please append a correct root= boot options; here are the available partions:

0800 sda
0801 sda1
0802 sda2
0803 sda3
0804 sda4
0b00 sr0 driver
Kernel panic: not syncing: VFS: Unable to mpunt root fs on unknown block(2,0)




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Re: LFS grub start error

2011-01-02 Thread Bruce Dubbs 
Rosario Turco wrote:
  created a virtual machine with Fedora 14 guest host a filesystem with no 
 errors
 everything is set up in LFS 6.7 Chapter 9. Kernel is ok.
 
 When I mount the new virtual machine obtained LFS, I get errors because I did
 not understand how to configure fstab and grub.cfg
 
 For LFS I have created these partitions on virtual machine:
 /boot  /dev/sdb1
 /home  /dev/sdb2
 /swap  /dev/sdb3
 /LFS   /dev/sdb4

 My /dev is:
 brw-rw 1 root daemon 8, 0 Jan  2 18:31 /dev/sda
 brw-rw 1 root daemon 8, 1 Jan  2 18:31 /dev/sda1
 brw-rw 1 root daemon 8, 2 Jan  2 18:31 /dev/sda2
 brw-rw 1 root daemon 8, 16 Jan  2 18:31 /dev/sdb
 brw-rw 1 root daemon 8, 17 Jan  2 18:31 /dev/sdb1
 brw-rw 1 root daemon 8, 18 Jan  2 18:31 /dev/sdb2
 brw-rw 1 root daemon 8, 19 Jan  2 18:31 /dev/sdb3
 brw-rw 1 root daemon 8, 20 Jan  2 18:31 /dev/sdb4
 
 The error is:
 VFS: cannot open root device sdb4 or unknown block (2,0)
 Please append a correct root= boot options; here are the available partions:
 
 0800 sda
 0801 sda1
 0802 sda2
 0803 sda3
 0804 sda4
 0b00 sr0 driver
 Kernel panic: not syncing: VFS: Unable to mpunt root fs on unknown block(2,0)

It would appear that your kernel is loading, but not picking up both 
drives.  It looks like it is only picking up the LFS drive as sda.  You 
might try changing your fstab to sda and the boot line to root=/dev/sda4.

Note that for LFS the grub search command is meaningless.

   -- Bruce

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