BEFORE: next=a000000000000000 alloc=afff...
AFTER : next=b000000000000000 (foreign zone 11)
HAMMER_MOUNT_OK; dd 512K -> panic: assertion "HAMMER_ZONE_DECODE(blockmap->next_offset) == zone" failed in hammer_blockmap_reserve at hammer_blockmap.c:449 (hammer_ip_add_bulk <- hammer_vop_strategy; full trace in panic.txt)

env: DragonFly 6.5-DEVELOPMENT INVARIANTS kernel, QEMU/KVM 6 vCPU, 4GB RAM