umka_boot
disk_add ../img/xfs_v4_ftype0_s05k_b2k_n8k.qcow2 hd0 -c 524288
ls70 /hd0/1/sf_empty
ls70 /hd0/1/sf
ls70 /hd0/1/block
ls70 /hd0/1/leaf
ls70 /hd0/1/node
ls70 /hd0/1/btree_leaf
ls70 /hd0/1/btree_leaf_free
ls70 /hd0/1/sf/.
ls70 /hd0/1/sf/..
disk_del hd0