From: Stuart Henderson <stu@spacehopper.org>
Subject: Re: New port: net/monero
To: "H. Hartzer" <h@hartzer.sh>
Cc: Andrew Kloet <andrew@kloet.net>, ports@openbsd.org
Date: Sat, 1 Nov 2025 14:57:45 +0000

On 2025/11/01 14:41, H. Hartzer wrote:
> https://github.com/monero-project/monero/issues/7027

re: "I think it has something to do with lmdb and WRITEMAP"

oh it has a vendored copy of lmdb?

openbsd doesn't have cache unified between mmap and file access, if
making a change on the one side, a sync is required for it to be updated
on the other side.

mdb normally depends on this working without sync, but that can be
relaxed if MDB_WRITEMAP is used (so that all writes are done via the
mmap). see the comment in
ports/databases/openldap/patches/patch-servers_slapd_back-mdb_init_c
(and the more terse comment in databases/lmdb/patches).