Filesystem            1K-blocks     Used Available Use% Mounted on
devtmpfs                 486936        0    486936   0% /dev
tmpfs                    502316        0    502316   0% /dev/shm
tmpfs                    502316     6800    495516   2% /run
tmpfs                    502316        0    502316   0% /sys/fs/cgroup
/dev/mapper/rhel-root  10258432  4052572   6205860  40% /
/dev/vda1               1038336   152624    885712  15% /boot
/dev/vdb1              25670884 12367064  11976768  51% /mailstore
tmpfs                    100460        0    100460   0% /run/user/0
