sizeof(volume_ondisk)=1928 vol0_blockmap@264 undo_array@904 (128 entries of 8)
undo BEFORE: phys=ffffffffffffffff first=3000000000000000 next=3000000000000000 alloc=3000000020000000
undo AFTER : phys=ffffffffffffffff first=3000004000000000 next=3000004000000010 alloc=3000004100000000
crafted: idx(first)=32768 -> read at bp+263048 (~240KB past the 16KB bp)
MOUNTING
mount: Input/output error