PICOS Debian Package Upgrade User Guide
Overview
PICOS provides five Debian packages from release 3.2 to let users upgrade some of the available components manually, or reinstall PICOS components in case some of them were broken.
Available PICOS Debian packages and the dependencies between them are described below:
- picos-linux
PICOS Linux Kernel, drivers and switching ASIC kernel modules
- picos-vasic
- PICOS VASIC and line card management libraries and utilities
- Depends on picos-linux
- picos-xorplus
- PICOS Layer 2 and Layer 3 software package
- Depends on picos-vasic, picos-utils
- picos-ovs
- PICOS OVS package
- “picos-ovs” will have its own lib to access peripherals (such as FAN and PSU and LED) via sysfs
- Depends on picos-vasic, picos-utils
- picos-utils
- PICOS common utilities and configuration files
- System config files, systemd units
- Common utility such as ZTP/diag
In this way, we do not need to upgrade the entire PICOS system if version changes only appear in one or several of the components. This provides an efficient and effective method of upgrading PICOS system.
NOTE: Some PICOS component packages would depend on other parts, so the dependent ones should be installed first if they do not exist on the system. |
How to use
When new releases of PICOS components have been made available to fix urgent issues, users can get the Debian packages from PICOS support team.
For example, the package users get might be "picos-xorplus-s4100-3.2.3-9dc8d94.deb" saved in the working directory.
To install the package, the following command is OK:
admin@Xorplus:~$ sudo dpkg -i picos-xorplus-s4100-3.2.3-9dc8d94.deb
After finishing upgrade, the switch will reboot automatically, the system will come up running the PICOS operating system with the new PICOS component.
NOTE: If certain PICOS components have been removed from the running Linux system, this operation would be an installation instead of upgrade. In this case, users need to confirm the model compatibility manually by inputting `Yes` or `Y` at the prompt `Are you sure the model is MODEL (yes/no)?` |
Verifying after Upgrade
We can use the following command to check the status of PICOS Debian packages after upgrade.
admin@Xorplus:~$ dpkg -l | grep picos- ii picos-linux ii picos-ovs ii picos-utils ii picos-vasic ii picos-xorplus
Here two “i” represent normal, the first one indicates that the package has been installed successfully. The second “i” indicates the installation dependencies between the components and configuration operations are successfully completed met.
Appendix
PICOS component package uninstall operation is provided as follows.
NOTE:
|
admin@Xorplus:~$ sudo apt remove picos-utils Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: picos-utils 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n]
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