It looks like 'mv' is not implemented. Could you offer some guidance on how to add 'mv' functionality?
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount$ mkdir mnt
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount$ bolt-mount mydatabase.bolt mnt &
[1] 93481
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount$
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount$ cd mnt
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt$ ls
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt$ ls -al
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt$ ls -al
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt$ mkdir -p bucket/sub
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt$ cd bucket/sub/
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ ls
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ echo "hello, jason" > greeting
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ ls -al
total 8
-rw-r--r-- 1 root wheel 13 Dec 19 14:49 greeting
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ cat greeting
hello, jason
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ which
usage: which [-as] program ...
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ which R
/usr/local/bin/R
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ cd
jaten@Jasons-MacBook-Pro:~$ cd go/src/github.com/bazil/bolt-mount/mnt/bucket/sub
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ ls
greeting
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ ls -al
total 8
-rw-r--r-- 1 root wheel 13 Dec 19 14:49 greeting
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ mv greeting short
mv: rename greeting to short: Input/output error
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$ ls -al
total 8
-rw-r--r-- 1 root wheel 13 Dec 19 14:49 greeting
jaten@Jasons-MacBook-Pro:~/go/src/github.com/bazil/bolt-mount/mnt/bucket/sub$