[Bug 261538] zfs panic: VERIFY3(l->blk_birth == r->blk_birth) failed

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261538

--- Comment #9 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to John F. Carr from comment #8)

> Block cloning acts a lot like deduplication and may
> trigger the assertion failure without deduplication
> being explicitly enabled.

Okay.

It still leaves the early 2022 to late 2023 time frame
difference and 2 reports in short order in late 2023
as suggestive of recent changes being involved in the
recent reports.

Robert and Kurt giving more details about the versions
used for similar-context-to-recent failures over that
2022 to late 2023 time frame could be somewhat useful
if they have been using various versions over that
time frame, used for the same kind of activity fairly
frequently but without problems until recently.

No claim such information would be definitive.

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