The overflow-triggered migration path (a WIREBIND-attached identity's own
drive running low on space) was scoped but never built -- only the
trigger-detection call site was missing, per this section's own text.
- capsule_wirebind.c now tracks the attached blkio_dev* alongside the
already-tracked VM id, set in try_attach() and cleared in both
EJECT/UNCLEAN paths.
- New capsule_wirebind_overflow_idle_check(), called once per idle tick
in repl.c right alongside blk_migration_idle_check() (same cadence):
reads the attached drive's free/total via blk_get_device_free_blocks(),
and if free space is below a fixed 10% threshold, extends the
identity's pool with a one-time blk_firsttouch_claim() of 8 additional
devblocks on Artemis's system-resident device.
- New blk_owner_has_claim(owner_fp) in block_subsystem.c answers the
debounce question blk_firsttouch_claim()'s own doc comment had left
open: a disk scan, not a RAM flag, so the already-extended answer
survives reboot/reattach, matching BMAPFMT's "ownership travels with
the block" model.
Premise checked before building (does a WIREBIND-attached drive actually
give a real free/total signal, or does it stay PROVISIONAL/raw): traced
repl.c's attach sequence and confirmed blk_subsys_attach_device() runs on
the same dev pointer right after WIREBIND, and a WIREBIND-eligible drive
is always already STFR/v2-formatted, so the signal is real. Premise held,
unlike the BAM item's overstated one.
Verified with the mandatory 3-arch QEMU acceptance (identical dictionary
hashes, no regression) plus a live logic test of blk_owner_has_claim():
a temporary TEST-OWNER-CLAIM word, run once via SK_CMD and reverted,
confirmed it correctly detects the claiming owner and rejects an
unrelated one. The low-disk-space-triggers-a-claim path itself is not
verified end-to-end -- that needs a real minted WIREBIND-user thumbdrive
with deliberately tiny capacity, out of scope for this pass; noted as
such in the FABRIC-2.md §I.2 closure note rather than overclaimed.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018EjXFo7mPXjUMjfJeuUUz4
