Backups are fun and exciting! Restores are exciting, in a terrifying and stressful way. Fixing serious bugs is gratifying, in a depressing way.
I am glad to announce two software releases: Obnam version 1.6.1 and larch version 1.20131130. Obnam is my backup application, larch is a Python copy-on-write B-tree implementation that Obnam uses. I've uploaded the new versions to Debian unstable and to my own apt repository at [code.liw.fi] (also for wheezy). (I don't have the energy to upload to Debian backports: help is welcome there.)
These are mainly bug fix releases, and minor improvements. The larch release fixes serious problems, and everyone should be upgrading.
NEWS for larch:
Serious bug fixed: the "KeyError" crash for reference counts. This was false memory use optimisation, which triggered a rare bug in related code. Repeatable test case by Rob Kendrick, and helpful analysis by Itamar Turing-Trauring.
Serious bug fixed: another "node missing" bug. This crash was caused by a bug that overwrote on-disk reference count groups with zeroes. Repeatable test case by Rob Kendrick.
Fixes to fsck from Antoine Brenner.
NEWS for Obnam (combining versions 1.6 and 1.6.1, both released today):
Fix Debian package dependencies correctly.
Stop logging paramiko exceptions that get converted into another type of exception by the SFTP plugin in Obnam.
obnam-benchmarkcan now use an installed version of larch. Patch by Lars Kruse.
Obnam has been ported to FreeBSD by Itamar Turner-Trauring of HybridCluster.
Backup progress reporting now reports scanned file data, not just backed up file data. This will hopefully be less confusing to people.
list-toplevelscommands now obey a new option,
--key-details, to show the usernames attached to each public key. Patch by Lars Kruse.
--ssh-commandto set the command Obnam runs when invoking ssh. patch by Lars Kruse.
obnam clientscan now be used without being an existing client. Patch by Itamar Turner-Trauring.
--ssh-host-keys-checkto better specify how SSH host keys should be checked. Patch by Itamar Turner-Trauring.
"obnam list-toplevelsso it doesn't give an error when it's unable to read the per-client directory of another client, when encryption is used. Fix by Lars Kruse.
Fix the encryption plugin to give a better error message when it looks for client directories but fails to find them. Fix by Lars Kruse.
obnam list-toplevelsgot confused when the repository contained extra files, such as "lock" (left there by a previous, crashed Obnam run). It no longer does. Fix by Lars Kruse.
The SFTP plugin now handles another error code (EACCESS) when writing a file and the directory it should go into not existing. Patch by Armin Größlinger.
Obnam's manual page now explains about breaking long logical lines into multiple physical ones.
/~/path prefix in SFTP URLs works again, at least with sufficiently new versions of Paramiko (22.214.171.124 in Debian wheezy is OK). Reported by Lars Kruse.
The Nagios plugin to report errors in a way Nagios expects. Patch by Martijn Grendelman.
The Nagios plugin for Obnam now correctly handles the case where a backup repository for a client exists, but does not have a backup yet. Patch by Lars Kruse.
obnam lsnow handles trailing slashes in filename arguments. Reported by Biltong.
When restoring a backup, Obnam will now continue past errors, instead of aborting with the first one. Patch by Itamar Turner-Trauring.