DF-3696 / run.log
# baseline (unpatched kernel #0 Jul 2 2026), f7_r5deg.img (RAID5 width=2 total_disks=2, disk1 absent) ar0: WARNING - parity protection lost. RAID5 array in DEGRADED mode ar0: 48MB <FreeBSD PseudoRAID RAID5 (stripe 0 KB)> status: DEGRADED ar0: disk0 READY using ad0 at ata0-master ar0: disk1 DOWN no device found for this subdisk <serial output stops here -- the kernel's ar0 slice-scan bio never completed (no "ar0: MBR magic not found" line); ssh never came up within 220s; guest wedged; vm.sh status -> down; hard reset required>