do the following to increase the dfs size : Create multiple directories or mount points in the hdfs data path : by default ambari deployed cluster contain /hadoop/hdfs/data as the data directory , so with root privileges : create a directory 1) mkdir /hadoop/hdfs/data1 2) chown -R hdfs:hadoop /hadoop/hdfs/data1 3) chmod -R 777 /hadoop/hdfs/data1 now edit the hdfs configuration : 1) on the cluster click on hdfs , click on configs , in the settings add the directory separated by comma under the hdfs.data.dir property : ex : /hadoop/hdfs/data, /hadoop/hdfs/data1 save the changes and restart the effected That will increase the disk space , to increase further repeat the same (or) lvs resize /hadoop/hdfs/data directory , do the following to increase the dfs size : Create multiple directories or mount points in the hdfs data path : by default ambari deployed cluster contain /hadoop/hdfs/data as the data directory , so with root privileges : create a directory 1) mkdir /hadoop/hdfs/data1 2) chown -R hdfs:hadoop /hadoop/hdfs/data1 3) chmod -R 777 /hadoop/hdfs/data1 now edit the hdfs configuration : 1) on the cluster click on hdfs , click on configs , in the settings add the directory separated by comma under the hdfs.data.dir property : ex : /hadoop/hdfs/data, /hadoop/hdfs/data1 save the changes and restart the effected That will increase the disk space , to increase further repeat the same (or) lvs resize /hadoop/hdfs/data directory ... View more