-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Announcing the release of DirectoryStorage 1.1.2 A serious bug has been discovered in all previous versions. Version 1.1.2 contains a fix, and no other changes. All users are encouraged to upgrade at their convenience. Problem Details: Under high write pressure it was possible for DirectoryStorage to neglect to flush all necessary files into the main storage directory when entering snapshot mode. This could happen if a transaction is committed concurrently with entry to snapshot mode. The effects of this bug include incomplete backups, incomplete replicas, and spurious errors when packing. Mitigating factors: 1. This does not corrupt the main storage, although it can lead to corrupt backups or replicas. 2. The corruption will certainly be detected by checkds. You do run checkds on a snapshot before taking a backup, dont you? 3. A backup/replica may be corrupt due to a missing file. Any missing file will certainly be included the next backup/replica. 4. I believe that the problems with backup and replication cant happen when the storage is inside a ZEO server, thanks to ZEO's threading architecture. DirectoryStorage inside ZEO is still vulnerable to spurious errors when packing. Download: http://sourceforge.net/project/showfiles.php?group_id=53818&release_id=16009... This bug was detected using a recent unit test added to ZODB by Jeremy to test a FileStorage corner case. Anyone wanting to repeat these unit tests will need the CVS trunks of both projects. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQE+x6bf99Pa/DbwZfsRAhQ9AJwMnVad/0hrM+iOPUEvRKTADB3ODwCeODV+ gBx4bwjiXETZRmxEpKrkz+Q= =OTzE -----END PGP SIGNATURE-----