Filesystem            1K-blocks     Used Available Use% Mounted on
devtmpfs                 486000        0    486000   0% /dev
tmpfs                    501380        0    501380   0% /dev/shm
tmpfs                    501380     6788    494592   2% /run
tmpfs                    501380        0    501380   0% /sys/fs/cgroup
/dev/mapper/rhel-root  10258432  4056480   6201952  40% /
/dev/vda1               1038336   152624    885712  15% /boot
/dev/vdb1              25670884 12368252  11975580  51% /mailstore
tmpfs                    100276        0    100276   0% /run/user/0
