transaction: change the on disk format for backupentries
We need to store new data to improve the current transaction logic:
- location: We want to generate and backup file outside of the 'store' (eg:
bookmarks, or various cache files). This requires knowing and preserving where
each file is located. The value of this new field is a string. It will be used
as a key for a vfs mapping.
- cache: We would like to handle cache file in the transaction code. This
Will help to have cache consistent with the repository state and avoid
performance issue on big repository like Mozilla. However, failure to handle
cache file should not result in a transaction failure. We add a new field that
carry this information. The value is boolean, A True value mean any error
while handling this file can be ignored.
Those two mechanisms are not implemented yet, but they are now persisted in the
on disk file. Support for new mechanisms is coming in later changeset.
We update the file format now and will introduce the new features in later
changeset. The format version is set to 0 until we actually support the new feature.
This will prevent misunderstanding between incomplete and final client.
Support for reading both version 1 and (future) version 2 could be achieved
(using default value when reading version 1) but has not been seen as necessary
for now.
[This file is here for historical purposes, all recent contributors
should appear in the changelog directly]
Andrea Arcangeli <andrea at suse.de>
Thomas Arendsen Hein <thomas at intevation.de>
Goffredo Baroncelli <kreijack at libero.it>
Muli Ben-Yehuda <mulix at mulix.org>
Mikael Berthe <mikael at lilotux.net>
Benoit Boissinot <bboissin at gmail.com>
Brendan Cully <brendan at kublai.com>
Vincent Danjean <vdanjean.ml at free.fr>
Jake Edge <jake at edge2.net>
Michael Fetterman <michael.fetterman at intel.com>
Edouard Gomez <ed.gomez at free.fr>
Eric Hopper <hopper at omnifarious.org>
Alecs King <alecsk at gmail.com>
Volker Kleinfeld <Volker.Kleinfeld at gmx.de>
Vadim Lebedev <vadim at mbdsys.com>
Christopher Li <hg at chrisli.org>
Chris Mason <mason at suse.com>
Colin McMillen <mcmillen at cs.cmu.edu>
Wojciech Milkowski <wmilkowski at interia.pl>
Chad Netzer <chad.netzer at gmail.com>
Bryan O'Sullivan <bos at serpentine.com>
Vicent Seguí Pascual <vseguip at gmail.com>
Sean Perry <shaleh at speakeasy.net>
Nguyen Anh Quynh <aquynh at gmail.com>
Ollivier Robert <roberto at keltia.freenix.fr>
Alexander Schremmer <alex at alexanderweb.de>
Arun Sharma <arun at sharma-home.net>
Josef "Jeff" Sipek <jeffpc at optonline.net>
Kevin Smith <yarcs at qualitycode.com>
TK Soh <teekaysoh at yahoo.com>
Radoslaw Szkodzinski <astralstorm at gorzow.mm.pl>
Samuel Tardieu <sam at rfc1149.net>
K Thananchayan <thananck at yahoo.com>
Andrew Thompson <andrewkt at aktzero.com>
Michael S. Tsirkin <mst at mellanox.co.il>
Rafael Villar Burke <pachi at mmn-arquitectos.com>
Tristan Wibberley <tristan at wibberley.org>
Mark Williamson <mark.williamson at cl.cam.ac.uk>