= Proposed Self Contained Change: Snapshot and Rollback Tool = https://fedoraproject.org/wiki/Changes/Rollback Change owner(s): Stephen Gallagher <sgallagh@xxxxxxxxxx>, Colin Walters <walters@xxxxxxxxxx> With the advent of thinly-provisioned LVM pools, it has become possible for us to implement full-system LVM snapshotting for recording rollback points. We are planning to support this for yum updates and eventually fedup upgrades going forwards. This change request notes the addition of new tools provided by the roller-derby project to present an interface and a CLI for managing and initiating rollbacks. == Detailed description == The roller-derby project will be providing a library and a CLI for creating, labeling and managing LVM snapshots (plus non-LVM backups of /boot), oriented primarily towards rpm-managed data, but useful beyond that. The yum plugin "yum-plugin-fs-snapshot" will be updated to consume this library and save the system state in a compatible format. The roller-derby CLI tool will provide an interactive and scriptable interface for manipulating these snapshots and determining when to remove older ones. It will also allow the tagging of snapshots as "known-good", to be skipped when automatically-trimming for space. The roller-derby project will likely provide a small daemon to keep track of the available space in the LVM pool to proactively clean up snapshots before the system runs out of space. In order to prevent "loss" of data when rebooting into an snapshot, the roller-derby CLI will allow saving a snapshot of the current state before rolling back and will provide tools to allow mounting of that current state to recover changes that have occurred since the rollback point. == Scope == The scope of this project is the completion of the initial release of the roller-derby project and the inclusion of thinly-provisioned LVM as an option in the Anaconda installer [1]. Proposal owners: We need to complete the roller-derby project. Other than the Anaconda change referenced above, all dependencies are available in Fedora already. Other developers: OS Installer Support for LVM Thin Provisioning Release engineering: N/A (not a System Wide Change) Policies and guidelines: N/A (not a System Wide Change) [1] https://fedoraproject.org/wiki/Changes/InstallerLVMThinProvisioningSupport _______________________________________________ devel-announce mailing list devel-announce@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel-announce -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
