1== Thu, 08 Sep 2005 13:13:58 +0900 ==
2
3Compressing options of ZLIB was changed.  If you use villa with the option
4`VL_OZCOMP', databases of the earlier versions are not compatible with the
5current version of QDBM.  To convert the old database to new format,
6export endian independent data by "vlmgr exportdb" with the old version,
7and then import it by "vlmgr importdb" with the latest version.
8
9
10
11== Wed, 10 Mar 2004 23:24:24 +0900 ==
12
13API of B+ tree was changed a bit.  Even if you build QDBM with ZLIB
14enabled, records are not compressed.  Instead of it, the function `vlopen'
15has the option `VL_OZCOMP'.  If it is specified, records are compressed.
16So, you can switch whether to compress records or not, on runtime.
17
18Users who have used ZLIB feature should modify their source codes to
19specify that option.
20
21
22
23== Wed, 10 Dec 2003 09:24:12 +0900 ==
24
25The database format was changed with QDBM 1.7.13.  Newer versions do not
26have backward compatibility to old format.  You can convert old databases
27with the command `fmtcnv031127' in the sub directory `lab'.  To build it,
28perform the following steps.
29
30  cd lab
31  make fmtcnv031127
32
33About usage of it, see the file `README' in `lab'.  Typically, to convert
34a Depot database named as `old' and create a database named as `new',
35perform the following step.
36
37  ./fmtcnv031127 < old > new
38
39I'm sorry for bothering you.
40
41
42
43== END OF FILE ==
44