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  • PyGrub

    from:https://wiki.debian.org/PyGrub

    Using pyGRUB on Wheezy to boot a domU kernel

    Using pyGRUB from xen-utils-4.0, each domU can boot with its own kernel instead of using the dom0 kernel, which makes life easier for updates and multi distribution Xeninstalls. You need to have first a working domU. The domU FileSystem needs to be ext[234].

     

    On the dom0

    • You need to have the system partition as the first partition listed in your domU.cfg disklist.

    Config snippet:

    root        = '/dev/xvda2 ro'
    disk        = [
                      'phy:/dev/vg05/test2.openforce.com-disk,xvda2,w',
                      'phy:/dev/vg05/test2.openforce.com-swap,xvda1,w',
                  ]

     

    On the domU

    • Make sure /etc/fstab refers to the mount points /dev/xvda{1,2}

    • Install a standard linux-image-amd64 kernel (since Xen support is in mainline Linux since Linux 2.6.37)

     

    mkdir /boot/grub
    apt-get install linux-image-amd64

    You don't need to install grub, you just need to create a simple grub config file which will be read by pygrub on the Dom0.

    • Create first /boot/grub/menu.lst based on the content of /boot/.

     

    cat > /boot/grub/menu.lst << EOF
    
    default         0
    timeout         2
    
    title           Debian GNU/Linux
    root            (hd0,0)
    kernel          /vmlinuz root=/dev/xvda2 ro
    initrd          /initrd.img
    
    title           Debian GNU/Linux (recovery mode)
    root            (hd0,0)
    kernel          /vmlinuz root=/dev/xvda2 ro single
    initrd          /initrd.img
    
    EOF

     

    On the dom0

    • Check that grub was properly installed on the domU with

     

    /usr/lib/xen-default/bin/pygrub /dev/vg02/my_domU-disk

    which should great with the familiar grub menu, and then abort

    • Replace the kernel and ramdisk parameters in the domU config file with the following line.

     

    bootloader      = '/usr/lib/xen-default/bin/pygrub'
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  • 原文地址:https://www.cnblogs.com/heidsoft/p/3899698.html
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