Thanks to everyone who participated.
Video recording: https://www.youtube.com/watch?v=-WwwomHkAZg
meeting notes (thanks Serapheim):
-
OpenZFS Dev Summit: talks & schedule (Matt)
-
The talks and other Info can be found in the summit’s website:
https://openzfs.org/wiki/OpenZFS_Developer_Summit_2021
-
Like previous years we will be streaming the event live on Youtube
and provide the recordings there for future reference.
-
There will be a hackathon on the second day as usual. This time it
would be great if people from this meeting and the general
leadership could
lead some of the hackathon efforts. One piece of feedback that
we got from
previous years was that it would be nice to have people available to help
newcomers get started.
-
Speed up zfs list (ready for review)
-
PR: https://github.com/openzfs/zfs/pull/11080
-
Status: Looking for reviewers
-
This work adds more fields to an existing optimization where we fetch
specific fields from datasets without actually opening their objsets
(object sets), which leads to a 300%+ performance improvement for those
scenarios.
-
Future ideas/work: Would be for zfs destroy to take advantage of the
same optimization and just print the datasets to be destroyed in no-op
scenarios without actually calculating the space freed, which is
expensive.
-
ZFS allow for ‘encrypted’ send only, to only allow encrypted sends
-
Question for this feature was brought up in FreeBSD podcast last week
-
The idea is that the receiving system of such a send-receive stream
won’t be able to access/read the plain text data of the encrypted dataset.
-
This level of security is not currently supported and probably
involves some changes to be designed outside of the ZFS kernel module.
-
Could be a good hackathon topic for the summit!
-
ZTS may fail in weird ways when re-ran on the same disks
-
Igor has been experiencing ZTS issues in DilOS where the first time
the ZTS runs successfully but subsequent runs experience
sporadic failures.
His hypothesis so far is that the labels are not cleared for the
tests that
run on disk-based pools (as opposed to file-based ones).
-
Historically, we’ve seen that all test cleanups work when tests pass,
but sometimes they do experience issues when tests fail. Proper
error-handling and cleanup for all possible scenarios during a
test failure
can get tricky.
-
Igor will be filling an issue after he comes up with a minimal
reproducer and/or a list of the troublesome tests so we can test whether
the same issues come up in the OS’s officially supported by the OpenZFS
repo.
-
Issue Triaging & Stalebot
-
There exist some concerns within the community about Issue Triaging
and the use of the Stalebot to mark and close them.
-
Illumos has been occasionally hitting a panic described in
https://www.illumos.org/issues/14003
<https://www.illumos.org/issues/14003#note-1> , which apparently was
also reported in OpenZFS under
https://github.com/openzfs/zfs/issues/6881 once but was subsequently
closed by Stalebot.
-
The underlying problem seems to be issue involvement and triaging
from the community. There’s recently been efforts from the leadership to
assign specific folks to help with PRs (ensuring that they get the
attention of the right reviews and people to test them) but unfortunately
issue triaging is something that people do on a volunteer-basis. In the
meantime the stalebot mark old issues as Stale and if there is
no activity
on them for 90 days, only then closes them.
-
The next steps on this would be to start a discussion on the issue
and encourage hackathon ideas around it during the summit.
On Mon, Sep 13, 2021 at 6:21 PM Matthew Ahrens <[email protected]> wrote:
> FYI: The schedule of presentations for this year's OpenZFS Developer
> Summit have been posted to the webpage:
> https://openzfs.org/wiki/OpenZFS_Developer_Summit_2021
>
> The next OpenZFS Leadership meeting will be held tomorrow, September 14,
> 9am 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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