Primary/Secondary Images

  • 24 January 2017
  • 3 replies

Userlevel 1
Is there a dual boot procedure if the primary image fails?

3 replies

Userlevel 3
You question is a little nebulous. What do you mean by "image"? Cumulus Linux is a full OS installed on a storage partition. If the OS install encounters an error, then you would troubleshoot it like any other linux system.
Userlevel 1
Dual boot between different versions of Cumulus. Let's just say Cumulus 3.2 failed for some reason or we just wanted to role back to a lower version, could we theoretically have 3.1 as a backup to boot from?
Userlevel 3
What you can do in this case is leverage the BTRFS snapshot mechanism. Load 3.1, get it all working, then use "snapper" to create a system snapshot. After upgrading to 3.2 using "apt-get upgrade", test stuff out. If there is a need to rollback, you can revert the system to the 3.1 snapshot.