[Qemu-devel] Mount errors in QEMU

[Qemu-devel] Mount errors in QEMU

[Peter Teoh]

I got the following errors:

Loading dm-mirror.ko module
Loading dm-zero.ko module
Loading dm-snapshot.ko module
Making device-mapper control node
Scanning logical volumes
  Reading all physical volumes.  This may take a while...
  No volume groups found
Activating logical volumes
  Volume group "clairevg" not found
Creating root device.
Mounting root filesystem.
mount: could not find filesystem '/dev/root'
Setting up other filesystems.
Setting up new root fs
setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
switchroot: mount failed: No such file or directory
nash-hotplug used greatest stack depth: 2752 bytes left
Kernel panic - not syncing: Attempted to kill init!

My command line is:

qemu -hda disk.img -kernel /boot/vmlinuz-2.6.26-rc3 -append
"root=/dev/sda5/" -initrd /boot/initrd-2.6.26-rc3.img

My distros is FC7.   Filesystem:

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda5             40631956  30185144   8349528  79% /
tmpfs                  1037312     22932   1014380   3% /dev/shm

Can I know what is the problem?   The "clairevg' volume group in the
error message above arises from the present environment where I run
the qemu (0.9.1):

/mnt/hd1/download/qemu>vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "clairevg" using metadata type lvm2
/mnt/hd1/download/qemu>pvscan
  PV /dev/sda6   VG clairevg   lvm2 [107.03 GB / 2.03 GB free]
  Total: 1 [107.03 GB] / in use: 1 [107.03 GB] / in no VG: 0 [0   ]
/mnt/hd1/download/qemu>lvscan
  ACTIVE            '/dev/clairevg/lv1' [105.00 GB] inherit

-- 
Regards,
Peter Teoh

Re: [Qemu-devel] Mount errors in QEMU

[Mulyadi Santosa]

Hi...

maybe your "root=' needs to point to the LVM volume instead of real
partition. ANd just make sure your kernel already included LVM
support...be it LVM version 1 or 2.

regards,

Mulyadi.

Re: [Qemu-devel] Mount errors in QEMU

[Peter Teoh]

On 5/31/08, Mulyadi Santosa <mulyadi.santosa@gmail.com> wrote:
> Hi...
>
>  maybe your "root=' needs to point to the LVM volume instead of real
>  partition. ANd just make sure your kernel already included LVM
>  support...be it LVM version 1 or 2.
>
>  regards,
>
>
>  Mulyadi.
>
>

Thanks for the reply.   As shown in "df", the root is not at the vg
level, as vg is just for storing a different set of data.

But I did try anyway.   Let me try again...

Thanks Mulyadi..
>


-- 
Regards,
Peter Teoh