Configuration Guide Configuring PKG_MGMT
2.2. Upgrading/Degrading a Single Feature Package
Scenario
Device software consists of several components, and each component is an independent feature module. After an
independent feature package is upgraded, only the feature bug corresponding to this package is fixed. Besides, this feature
is enhanced with the other features unchanged.
The features of this upgrade mode are as follows: Generally, a feature package is small and the upgrade speed is high. After
the upgrade is completed, only the corresponding functional module is improved, and other functional modules remain
unchanged.
Deployment
You can store this package in the root directory of the TFTP server, download the package to the local device, and then
complete the upgrade. You can also store the package in a USB flash drive, connect the USB flash drive to the device, and
then complete the upgrade.
2.3. Installing a Hot Patch Package
Scenario
To fix software bugs without restarting the device, you can install hot patch packages. Hot patch packages are only
applicable to fixing a specific software version. Generally, hot patch packages are released to fix the software of a certain
version only when the device cannot be started in the user's environment.
The most significant feature of hot patch upgrade is that all bugs can be fixed without device restart after the upgrade is
completed.
Deployment
You can store this package in the root directory of the TFTP server, download the package to the local device, and then
complete the upgrade. You can also store the package in a USB flash drive, connect the USB flash drive to the device, and
then complete the upgrade.
3. Features
Basic Concepts
Subsystem
A subsystem exists on a device in the form of images. The subsystems of the RGOS include:
boot: After being powered on, the device loads and runs the boot subsystem first. This subsystem is responsible for
initializing the device, and loading and running system images.
kernel: kernel is the OS core part of the system. This subsystem shields hardware composition of the system and
provides applications with abstract running environment.
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