OStree is how the root filesystem in ublue is managed. It can have multiple deployments including 1 active deployment and 1 or more standby or rollback deployments. You can read more about ostree in the upstream documentation.
Pull updated version based on your current upstream repository.
sudo rpm-ostree upgrade
Roll back deployment¶
This will change your next target boot to the previous deployment. Use this if you have issues with your current booted deployment.
sudo rpm-ostree rollback
Add rpm package¶
Install a new package layered on top of the file system tree.
--now to layer on top of the active tree.
sudo rpm-ostree install $PACKAGE
Get ostree status¶
See the current booted file system tree and any layered packages.
sudo rpm-ostree status
Pin a file system tree¶
To pin your current file system use
0 and for the previous booted file system use
This will keep a deployment available so it is not garbage collected.
Useful for major version changes and kernel changes.
sudo ostree admin pin 0