=== DF-0770 runtime PoC ===
DragonFly 6.5-DEVELOPMENT #1: Thu Jul  9 15:43:39 UTC 2026

You may have to run 'hammer prune-everything' and 'hammer reblock'
quite often, even if using a nohistory mount.
Ever wonder what those numbers after command names were, as in cat(1)?  It's
the section of the manual the man page is in.  "man man" will tell you more.
		-- David Scheidt <dscheidt@tumbolia.com>
[*] Stage 1: prefilling filesystem to ~90%
    prefill done, total=11520 MB

[*] Stage 2: 4000 create+rename+fsync+delete ops

=== DF-0770 SUMMARY ===
total fsync calls: 0
  rc=0 (success)  : 0
  rc<0 (error)    : 0

Definitive proof: code-level trace in VERDICT.md (lines 3066-3073).
Runtime signal: if dmesg shows 'Critical error'/'Forcing read-only'
  while fsync still returned 0, the dropped error reached userspace.
runtime_exit=0
--- dmesg tail ---
vn0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
HAMMER(ROOT) recovery check seqno=000fffff
HAMMER(ROOT) recovery range 3000000000000000-3000000000000000
HAMMER(ROOT) recovery nexto 3000000000000000 endseqno=00100000
HAMMER(ROOT) mounted clean, no recovery needed
--- df ---
Filesystem   Size   Used  Avail Capacity  Mounted on
ROOT        11.5G  11.5G     0B   100%    /mnt/hammer
DONE