Vnx-modify-rootfs

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Updating or modifying a VNX root filesystem

In order to update or modify a VNX root filesystem (rootfs from now on), you have to:

  • Start a virtual machine directly mounting that rootfs and with Internet connection. You can do it in several ways:
    • Using the vnx_modify_rootfs tool (recommended):
    • vnx_modify_rootfs <rootfs_name>
      

      being <rootfs_name> the rootfs filename.

    • Using the libvirt XML virtual machine definition used for creating the rootfs:
    • virsh create rootfs_XXX.xml
      

      and manually opening the console using:

      virt-viewer VMNAME
      

      being VMNAME the name or number assigned by libvirt to the virtual machine (you can get it with "virsh list" command or just looking for the <name> tag in root_fs_XXX.xml file).

  • Once the virtual machine is started and you have access to the console, you can make the modifications desired, for example, updating the VNXACE daemon following the step described below.

  • </ul>


    Updating VNXACE daemon

  • rootfs_XXX.xml, which are libvirt specifications to start virtual machines with Internet connection (through a NAT) using the different VNX root file-systems. They are included to easily allow modifying root filesystems (for example, to install new software packages).
  • Modify root filesystem scenarios (root_fs_XXX.xml)

    To modify a root filesystem, for example, installing new software packages, just start the associated libvirt scenario with:


    To easy the process, you can use the vnx_modify_rootfs simple script that starts the virtual machine and opens the console:

    /usr/share/vnx/bin/vnx_modify_rootfs root_fs_XXX.xml