[Bug 275308] EN tracking issue for potential ZFS data corruption

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275308

--- Comment #7 from Ed Maste <emaste@freebsd.org> ---
Based on the latest discussion in https://github.com/openzfs/zfs/issues/15526
my current understanding is:

- Setting sysctl vfs.zfs.dmu_offset_next_sync=0 is reported to make the issue
harder to reproduce, but does not reliably prevent it. A change to the default
will *not* be in an EN update.
- https://github.com/openzfs/zfs/pull/15571 is the actual fix for this issue.
- Pull request 15571 needs to land in OpenZFS upstream first. Once that happens
we can import it, MFC to stable/14, and issue an EN to update 14.0 and 13.2.
- dnode_is_dirty was introduced in commit de198f2d9507 in OpenZFS, and does not
exist in FreeBSD 12.4. This issue may not affect 12.x.

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