Re: Xen Dom U kernel

[kishore kumar <bodkekumar@gmail.com>]

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OK.
what could be the reason for my domU creation is failing here?

Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.
Creating block device nodes.
Scanning and configuring dmraid supported devices
Scanning logical volumes
Reading all physical volumes. This may take a while...
Found volume group "VolGroup01" using metadata type lvm2
lvm used greatest stack depth: 4912 bytes left
Activating logical volumes
2 logical volume(s) in volume group "VolGroup01" now active
Trying to resume from /dev/VolGroup01/LogVol01
No suspend signature on swap, not resuming.
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
Kernel panic - not syncing: Attempted to kill init!
Pid: 1, comm: init Not tainted 2.6.33 #3
Call Trace:
[<ffffffff810513fa>] panic+0xa5/0x171
[<ffffffff81006891>] ? xen_force_evtchn_callback+0xd/0xf
[<ffffffff8148ce94>] ? _raw_write_unlock_irq+0x30/0x3b
[<ffffffff8107ecb8>] ? trace_hardirqs_on_caller+0x110/0x134
[<ffffffff8107ece9>] ? trace_hardirqs_on+0xd/0xf
[<ffffffff8148ce9b>] ? _raw_write_unlock_irq+0x37/0x3b
[<ffffffff81054b0c>] do_exit+0x7c/0x6f5
[<ffffffff8107189f>] ? up_read+0x2b/0x2f
[<ffffffff81055221>] sys_exit_group+0x0/0x1b
[<ffffffff81055238>] sys_exit_group+0x17/0x1b
[<ffffffff81009cf2>] system_call_fastpath+0x16/0x1b

Thank You.
On Thu, Apr 22, 2010 at 1:48 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:

> On Thu, Apr 22, 2010 at 01:39:57PM -0700, kishore kumar wrote:
> >    I did below steps
> >    make menuconfig
> >    make
> >    make modules_install install
> >    /sbin/depmod -a 2.6.33
> >    /sbin/mkinitrd --with xen-blkfront --with xen-netfront
> >    /boot/initrd-xenu.img    2.6.33
> >
>
> You had these .config options set:
> CONFIG_XEN_BLKDEV_FRONTEND=y
> CONFIG_XEN_NETDEV_FRONTEND=y
>
> That means the drivers are built *into* the kernel statically,
> and they're *not* built as modules.
>
> So you don't need to use "--with xen-blkfront --with xen-netfront" for
> mkinitrd.
>
> -- Pasi
>
> >    still the same problem.
> >
> >    On Thu, Apr 22, 2010 at 1:25 PM, Pasi Kärkkäinen <[1]pasik@iki.fi>
> wrote:
> >
> >      On Thu, Apr 22, 2010 at 01:08:54PM -0700, kishore kumar wrote:
> >      >    I tried
> >      >    mkinitrd --with xen-blkfront --with xen-netfront
> >      /boot/initrd-xenu.img
> >      >     2.6.33
> >      >    It complaints No module xen-blkfront found for kernel 2.6.33,
> >      aborting.
> >      >
> >      >    I dont see xen-blkfront.ko in my
> /lib/modules/2.633/drivers/block .
> >       Am I
> >      >    looking at the right place?
> >      >
> >
> >      Have you done "depmod -a <kernelversion>" before running mkinitrd ?
> >
> >      -- Pasi
> >
> >      >    Thank You.
> >      >
> >      >    On Thu, Apr 22, 2010 at 12:53 PM, Pasi Kärkkäinen
> >      <[1][2]pasik@iki.fi> wrote:
> >      >
> >      >      On Thu, Apr 22, 2010 at 11:31:25AM -0700, kishore kumar
> wrote:
> >      >      >    I am trying create ramdisk image for my domU image from
> >      Konrad git
> >      >      >    repository.
> >      >      >
> >      >      >    mkinitrd --with xenblk --with xennet
> /boot/initrd-xenu.img
> >       2.6.33
> >      >      >    I get No module xenblk found for kernel 2.6.33,
> aborting.
> >      >      >    Can you please let me know what could be the problem??
> >      >      >
> >      >      >    I have CONFIG_XEN_BLKDEV_FRONTEND=y
> >      >      >    CONFIG_XEN_NETDEV_FRONTEND=y in my .config as well.
> >      >      >
> >      >
> >      >      Xen modules in upstream [2][3]kernel.org (pvops) kernels are
> not
> >      called
> >      >      xennet or xenblk.
> >      >      They're called xen-blkfront and xen-netfront in pvops
> kernels.
> >      >
> >      >      You can easily verify be checking under
> >      /lib/modules/<kernelversion>/
> >      >
> >      >      -- Pasi
> >      >      >    Thank You.
> >      >      >    On Tue, Apr 20, 2010 at 6:45 PM, Konrad Rzeszutek Wilk
> >      >      >    <[1][3][4]konrad.wilk@oracle.com> wrote:
> >      >      >
> >      >      >      On Tue, Apr 20, 2010 at 05:09:29PM -0700, kishore
> kumar
> >      wrote:
> >      >      >      > I did git pull and did
> >      >      >      > make
> >      >      >      > make modules_install install.
> >      >      >      >   Is this the problem with xen blkdevices not
> loaded?
> >       Can you
> >      >      let me
> >      >      >      know
> >      >      >
> >      >      >      So now you are hitting another problem. This looks
> >      >      >      to be this one:
> >      >      >
> >      >
> >      [2][4][5]
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
> >      >      >
> >      >      >      Please follow the whole thread and select the right
> config
> >      >      options.
> >      >      >
> >      >      > References
> >      >      >
> >      >      >    Visible links
> >      >      >    1. mailto:[5][6]konrad.wilk@oracle.com
> >      >      >    2.
> >      >
> >       [6][7]
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
> >      >
> >      > References
> >      >
> >      >    Visible links
> >      >    1. mailto:[8]pasik@iki.fi
> >      >    2. [9]http://kernel.org/
> >      >    3. mailto:[10]konrad.wilk@oracle.com
> >      >    4.
> >      [11]
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
> >      >    5. mailto:[12]konrad.wilk@oracle.com
> >      >    6.
> >      [13]
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
> >
> > References
> >
> >    Visible links
> >    1. mailto:pasik@iki.fi
> >    2. mailto:pasik@iki.fi
> >    3. http://kernel.org/
> >    4. mailto:konrad.wilk@oracle.com
> >    5.
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
> >    6. mailto:konrad.wilk@oracle.com
> >    7.
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
> >    8. mailto:pasik@iki.fi
> >    9. http://kernel.org/
> >   10. mailto:konrad.wilk@oracle.com
> >   11.
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
> >   12. mailto:konrad.wilk@oracle.com
> >   13.
> http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00897.html
>

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