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@@ -1,106 +0,0 @@ -# Release notes for Obnam2, the backup software - -This file summarizes changes between releases of the second generation -of Obnam, the backup software. The software is technically called -"obnam2" to distinguish it from the first generation of Obnam, which -ended in 2017 with version number 1.22. - - -## Obnam2 version 0.3.1, released 2021-03-23 - -This is a minor release to work around a bug in Subplot, which -prevented the 0.3.0 release to have a Debian package built. The -workaround is to rewrite a small table in the "Filenames" section as a -list. - - -## Obnam2 version 0.3.0, released 2021-03-14 - -### Breaking changes - -* The format of the data stored on the backup repository has changed. - The new version can't restore old backups: old generations are now - useless. You'll have to start over. Sorry. - -### New or changed features - -* New `obnam config` sub-command writes out the actual configuration - that the program users, as read from the configuration file. - -* The client configuration now has default values for all - configuration fields that can reasonably have them. For example, it - is no longer necessary to explicitly set a chunk size. - -* Only known fields are now allowed in configuration files. Unknown - fields cause an error. - -* It is now possible to back up multiple, distinct directories with - one client configuration. The `root` configuration is now `roots`, - and is a list of directories. - -* Problems in backing up a file no longer terminate the backup run. - Instead, the problem is reported at the end of the backup run, as a - warning. - -* The client now requires an HTTPS URL for the server. Plain HTTP is - now rejected. The TLS certificate for the server is verified by - default, but that can be turned off. - -* The client progress reporting is now a little clearer. - -* Unix domain sockets and named pipes (FIFO files) are now backed up - and restored. - -* The names of the user and group owning a file are backed up, but not - restored. - -* On the Obnam server, the Ansible playbook now installs a cron job to - renew the Let's Encrypt TLS certificate. - -### Bugs fixed - -* Temporary files created during backup runs are now automatically - deleted, even if the Obnam client crashes. - -* Symbolic links are now backed up and restored correctly. Previously - Obnam followed the link when backing up and created the link - wrongly. - -* The Ansible playbook to provision an Obnam server now enables the - systemd unit so that the Obnam server process starts automatically - after a reboot. - -### Changes to documentation - -* A tutorial has been added. - -The Obnam subplot (`obnam.md`), which describes the requirements, -acceptance criteria, and architecture of the software, has some -improvements: - -* a discussion of why Obnam doesn't use content-addressable storage - -* a description of the logical structure of backups as stored on the - backup server - -* a rudimentary first sketch of a threat model: the operator of the - backup server reads the backed up data - -* an initial plan for adding support for encryption to backups; this - is known to be simplistic and inadequate, but the goal is to get - started, and then iterate to get something acceptable, even if that - takes months - -### Thank you - -Several people have helped with this release, with changes or -feedback. I want to especially mention the following, with apologies -to anyone I have inadvertently forgotten: Alexander Batischev, Ossi -Herrala, Daniel Silverstone, Neal Walfield. - -## Obnam2 version 0.2.2, released 2021-01-29 - -This is the first release of Obnam2. It can just barely make and -restore backups. It's ready for a light trial, but not for real use. -There's no encryption, and backups can't be deleted yet. Restores of -the entire backup work. |