louist@monolith:~$ sudo partprobe
Error: /dev/zram0: unrecognised disk label
Error: /dev/zram1: unrecognised disk label
louist@monolith:~$ sudo resize2fs /dev/sdb1
resize2fs 1.42.9 (4-Feb-2014)
Filesystem at /dev/sdb1 is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 1
The filesystem on /dev/sdb1 is now 3670016 blocks long.