panic: bad dir
Starting stack trace...
panic(ffffffff825cc5ef) at panic+0x16b sys/kern/subr_prf.c:233
ufs_lookup() at ufs_lookup+0x174c ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline]
ufs_lookup() at ufs_lookup+0x174c sys/ufs/ufs/ufs_lookup.c:444
VOP_LOOKUP(fffffd807daf9a20,ffff800022d6e518,ffff800022d6e548) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff800022d6e4e8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561
namei(ffff800022d6e4e8) at namei+0x36a sys/kern/vfs_lookup.c:245
dounlinkat(ffff8000212e82a0,ffffff9c,7f7fffff2930,8) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1852
syscall(ffff800022d6e6c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff800022d6e6c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff2920, count: 249
End of stack trace.
syncing disks...23 21 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1  giving up

dump to dev 4,1 not possible
rpeaboniotc: ikenrgn.e..l
 diagnostic SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 10ee261f-e4fb-b939-235d-2a56a4c27911
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f24c0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.54
boot> show malloc
boot: illegal argument malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace