login: vn4: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
hammer2_mount: devstr="/dev/vn4@LOCAL"
hammer2_mount: device="/dev/vn4" label="LOCAL" rdonly=0
hammer2_ondisk: "/dev/vn4" zone=0 id=0 offset=0x0000000000000000 size=0x0000000080000000
hammer2_mount: "/dev/vn4": no recovery needed
hammer2_mount: hmp=0xfffff8011842c000 pmp=0xfffff80118cc0000
HAMMER2: VOLDATA DUMP
HAMMER2: INITIATE SPANs
HAMMER2: CONN WAS TERMINATED


Fatal trap 12: page fault while in kernel mode
cpuid = 3; lapic id = 3
fault virtual address	= 0x98
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff80970c82
stack pointer	        = 0x10:0xfffff8009020f790
frame pointer	        = 0x10:0xfffff8009020f890
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 0, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= Idle
current thread          = pri 12 
kernel: type 12 trap, code=0

CPU3 stopping CPUs: 0x00000037
 stopped
Stopped at      hammer2_chain_lookup+0x92:      movzbl  0x98(%rbx),%eax
db>