Summary: Change format of DBVERSION and guardian files https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=232050 [Problem description] The DBVERSION and guardian files used by the database backends should convey some information about the database implementation used (e.g. berkeley db, sqlite), the version, the directory server database backend used, and any other information pertinent to the server being able to use or upgrade the files. The following format is proposed: implementation/version/server backend plugin name[/other tag][/other tag].... For example: bdb/4.2/libback-ldbm/newidl This indicates that the files use Berkeley DB version 4.2, they are used by the server libback-ldbm database plugin, and the index files use the newidl format. The other tags are optional and may be implementation specific. At a minimum, the file must contain the implementation/version/pluginname. The reasons for changing the format are as follows: 1) Make it easy for humans and code to identify what the files are, how they are used, and how to upgrade or migrate them 2) Separate the database file version and formats from the directory server version, vendor, and brand 3) Allow new database implementations, plugins, and features e.g. sqlite/3.0/libback-sqlite 4) A one line description is easy to read in and easy to parse When the server reads in a database with an old format DBVERSION or guardian file, it will change the file to use the new format and upgrade the data as necessary. -------------------------------------------------------------------------------- This change is made against the changelog used by the replication plugin following the format change on the main backend. ------- Additional Comments From nhosoi@xxxxxxxxxx 2007-03-15 16:39 EST ------- Created an attachment (id=150172) --> (https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=150172&action=view) cvs diffs Files: repl_shared.h cl5_api.h cl5_api.c Changes: 1) change the format of changelogdb/{DBVERSION,guardian} files [before] Changelog5/NSMMReplicationPlugin/4.0 [after] bdb/4.4/libreplication-plugin Note: changelog guardian file stores the same string as DBVERSION does, thus changed the format to follow the DBVERSION style. As being done for the backend, use DB_VERSION_MAJOR and _MINOR to get the current version of the Berkeley DB. 2) Added the 3-rd arg buflen to _cl5ReadDBVersion. 3) Added transaction removing code to _cl5Upgrade3_4 4) Added _cl5Upgrade4_4 which is a subset of _cl5Upgrade3_4.
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