Thanks to everyone who participated at this month's meeting, and especially
to Mark Maybee for running the meeting and to Serapheim for taking notes.

video recording: https://youtu.be/5Lby_Vl6H88

notes:


   -

   OpenZFS Dev Summit: Dates, planning, etc.
   - Registration for talk proposals opens on July 23rd and deadline is on
   August 30th
   - Conference Nov 8-9th
   - Remote or hybrid (in-person and remote) conference is being discussed.
   Would folks be interested in the hybrid option? Only Allan expressed
   interest. Most interest is in remote-only.
   -

   Run ztest with asan (Address Sanitizer malloc debugger) (Matt/Mark)
   There was some initial issue with ztest, issue 12215 that needs to be
   tracked down before we can enable ASan
   Related: MarkJ@FreeBSD also using KMSAN:
   https://github.com/openzfs/zfs/pull/12383
   -

   Status update on Panzura’s temporal dedup?

(matt:) looks like the last update was 4/28/2020, they have
“de-prioritized” this upstreaming work

No one on the call has update.

   -

   Allan Jude:
   - Linux Namespace support PR12263 is ready for review
   - About time to remove WIP status for vdev properties PR11711, new tests
   are being written.
   - Klara is working on zvol performance, if you have known pathologies,
   please share
   -

   Allan Jude brought up enabling LZ4 compression by default.


   -

   Ryan Moller suggests changing default for xattr to SA
   -

   Alexander Motin suggests changing default zvol block size from 8kb to
   16kb


   -

   Discussed possibly forcing allocations to be far apart on the disk (ala
   ditto blocks) to improve flash performance


   -

   Xattr compat (Ryan): https://github.com/openzfs/zfs/pull/11919
   Requesting design/code review. Tony to reach out to Brian.
   -

   Formalize a procedure for ‘erratas’, like the encryption+ project dnode
   issue, or even the zstd big-endian issue (like a bug@ not a feature@
   flag)

Due to zfs projects being ported after encryption, #7177 (include the
project dnode as part of the objset hash on encrypted datasets) was missed
(this appears to have happened with the macOS port as well). As a result,
there are now encrypted zfs datasets on illumos that are incompatible with
OpenZFS and vice versa.  While it is possible to re-try any objset hash
failures for compatibility between the two,  ‘fixing’ such a dataset
presents some thorny issues. One approach that was floated in the illumos
community (see
https://illumos.topicbox.com/groups/developer/T1981ce734a4a8c50-M4a3b3c0aff56de6ac0ceddfc)
was to propose an SPA feature that’s largely a dummy feature on non-illumos
platforms (i.e. is ignored), which would allow for explicit identification
of the two pools.


On Mon, Jul 19, 2021 at 1:41 PM Matthew Ahrens <[email protected]> wrote:

> The next OpenZFS Leadership meeting will be held tomorrow, July 20, 1pm
> Pacific time.
> Everyone is welcome to attend and participate, and we will try to keep the
> meeting on agenda and on time.  The meetings will be held online via Zoom,
> and recorded and posted to the website and YouTube after the meeting.
>
> For more information and details on how to attend, as well as notes and
> video from the previous meeting, please see the agenda document:
>
>
> https://docs.google.com/document/d/1w2jv2XVYFmBVvG1EGf-9A5HBVsjAYoLIFZAnWHhV-BM/edit
>
> --matt
>

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