Date: Thu, 20 Jul 2023 15:50:15 -0700 From: Rick Macklem <rick.macklem@gmail.com> To: Freebsd fs <freebsd-fs@freebsd.org>, Peter Eriksson <pen@lysator.liu.se>, kevans@freebsd.org Subject: RFC: Patch for mountd to handle a database for exports Message-ID: <CAM5tNy7GkMLgy-wjonVu%2BgOMnexoA2W8vSZvMo4NDikrg3-A1A@mail.gmail.com>
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Hi,
Peter Eriksson has submitted an interesting patch that adds support
for a database file for exports. My understanding is that this improves
performance when used with the ZFS share property for exporting a
large number of file systems.
There are a couple of user visible issues that I'd like feedback from
others. (Hopefully Peter can correct me if I get any of these wrong.)
- The patch uses a single database file and a new "-D" option to
specify it on the command line.
--> I think it might be less confusing to just put the database file(s)
in the exports list and identify them via a ".db" filename suffix.
What do others think?
The changes are #ifdef'd on USE_SHAREDB. I'm thinking that this
change will be always built, so maybe USE_SHAREDB is not needed?
(Obviously mountd(8)'s semantics will only changed if/when database
file(s) are provided.)
Once I have feedback on the above, I will put a patch up on
phabricator.
rick
ps: I believe kevans@ has volunteered to shepperd the ZFS share
property changes.
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