Resize Cube MongoDB volume

Resize Cube MongoDB volumes (bigger). Currently using 85% with 16GB available.

$ ssh deployer@cube-01
deployer@cube-01:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            2.0G   12K  2.0G   1% /dev
tmpfs           396M  392K  395M   1% /run
/dev/xvda1      7.8G  2.2G  5.2G  30% /
none            4.0K     0  4.0K   0% /sys/fs/cgroup
none            5.0M     0  5.0M   0% /run/lock
none            2.0G     0  2.0G   0% /run/shm
none            100M     0  100M   0% /run/user
+/dev/xvdd       100G   85G   16G  85% /var/lib/mongodb
/dev/xvdl       4.0G   35M  4.0G   1% /var/log/mongodb

$ ssh deployer@cube-02
deployer@cube-02:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            2.0G   12K  2.0G   1% /dev
tmpfs           396M  388K  395M   1% /run
/dev/xvda1      7.8G  2.2G  5.2G  30% /
none            4.0K     0  4.0K   0% /sys/fs/cgroup
none            5.0M     0  5.0M   0% /run/lock
none            2.0G     0  2.0G   0% /run/shm
none            100M     0  100M   0% /run/user
+/dev/xvdd       100G   85G   16G  85% /var/lib/mongodb
/dev/xvdl       4.0G   36M  4.0G   1% /var/log/mongodb