Help Center/ Image Management Service/ FAQs/ Image Optimization/ What Will the System Do to an Image File When I Use the File to Register a Private Image?
Updated on 2024-07-17 GMT+08:00
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What Will the System Do to an Image File When I Use the File to Register a Private Image?

You are advised to enable automatic configuration when registering a private image using an image file. Then, the system will perform the following operations:

Linux

  • Check whether any PV drivers exist. If yes, the system deletes them.
  • Modify the grub and syslinux configuration files to add OS kernel boot parameters and change disk partition names to UUIDs.
  • Change disk partition names in the /etc/fstab file to UUIDs.
  • Check whether the initrd file has Xen and IDE drivers. If no, the system will load the Xen and IDE drivers.
  • Modify the X Window configuration file /etc/X11/xorg.conf to prevent display failures.
  • Delete services of VMware tools.
  • Record the latest automatic modification made to the image into /var/log/rainbow_modification_record.log.
  • Copy built-in VirtIO drivers to initrd or initramfs. For details, see External Image File Formats and Supported OSs.

For the following image files, the system does not copy built-in VirtIO drivers after Enable automatic configuration is selected:

  • Image files whose /usr directory is an independent partition
  • Fedora 29 64bit, Fedora 30 64bit, and CentOS 8.0 64bit image files that use the XFS file system
  • SUSE 12 SP4 64bit image files that use the ext4 file system

Windows

  • Restore the IDE driver so that the OS can use this driver for its initial start.
  • Delete the registry keys of the mouse and keyboard and generate the registry keys again to ensure that the mouse and keyboard are available on the new cloud platform.
  • Restore the PV driver registry key to rectify driver installation failures and Xen driver conflicts.
  • Restore DHCP so that the OS will dynamically obtain information such as the IP address based on the DHCP protocol.
Parent topic: Image Optimization