fstab

LABEL=cloudimg-rootfs   /        ext4   defaults,discard        0 0

/dev/xvdb       /data/mongodb-replica-master   xfs    defaults,nofail,nobootwait        0       0
/dev/xvdc       /data/mongodb-replica-slave    xfs    defaults,nofail,nobootwait        0       0

gistfile1.txt

➜  ~ sudo mount -a
mount: wrong fs type, bad option, bad superblock on /dev/xvdb,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.
       
mount: wrong fs type, bad option, bad superblock on /dev/xvdc,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

➜  ~ sudo mount -t xfs /dev/xvdb /data/mongodb-replica-master
➜  ~ sudo mount -t xfs /dev/xvdc /data/mongodb-replica-slave 
➜  ~ mount
...
/dev/xvdb on /data/mongodb-replica-master type xfs (rw,relatime,attr2,inode64,noquota)
/dev/xvdc on /data/mongodb-replica-slave type xfs (rw,relatime,attr2,inode64,noquota)