[pfx] Re: [heads up] lmdb 1.0

Michael Grimm via Postfix-users:
> Hi,
> 
> tl;dr this is not a postfix issue.
> 
> I do want to point out: http://www.lmdb.tech/doc/upgrading.html
> 
> I got bitten by this on FreeBSD and had had to fall back to lmdb 0.93.5
> 
> I have been in the naive assumption that this shouldn't be an issue at all by just rebuilding my lmdb databases with 'postmap lmdb:TEST'
> 
> But there are other issues with lmdb 1.0:
> 
> test> ldd /usr/local/lib/postfix/* | grep lmdb
> /usr/local/lib/postfix/postfix-lmdb.so:
> liblmdb.so.1 => /usr/local/lib/liblmdb.so.1 (0x90234ff3000)
> 
> test> la /usr/local/lib/liblmdb*
> -rw-r--r--  1 root wheel uarch 137992 Jul  5 08:51 /usr/local/lib/liblmdb.a
> lrwxr-xr-x  1 root wheel uarch     14 Jul  5 08:51 /usr/local/lib/liblmdb.so -> liblmdb.so.1.0
> lrwxr-xr-x  1 root wheel uarch     14 Jul  5 08:51 /usr/local/lib/liblmdb.so.1 -> liblmdb.so.1.0
> -rw-r--r--  1 root wheel uarch 114040 Jul  5 08:51 /usr/local/lib/liblmdb.so.1.0
> 
> test> postmap lmdb:TEST
> postmap: fatal: error updating lmdb:TEST: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid

Apparently their API has changed too. If there is no compatibility 
option, then that is a breaking change.

> Well, I will stick with lmdb 0.9.35 for the time being or migrate
> to other database formats, instead.

Way to go if you have that option.

	Wietse
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