| # replace a non-empty dir on same ino with a cdev with the same name, new has 2 | |
| # links | |
| mkdir $2 /2 | |
| mkdir $1 /2/1 | |
| mkdir $3 /2/1/3 | |
| mkdir $5 /2/1/3/5 | |
| snapshot | |
| rmdir /2/1/3/5 | |
| rmdir /2/1/3 | |
| remount | |
| mknod $3 /2/1/3 c 100 101 | |
| mkdir $4 /2/4 | |
| link /2/1/3 /2/4/3 | |
| snapshot |