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4

To make the space available, you need to use the xfs_growfs command as the filesystem on your logical volume is xfs. xfs_growfs / If it were ext2, ext3, or ext4, then you'd use resize2fs with the name. EDIT: It appears to have been changed in its latest release for Fedora and RHEL 8 and CentOS 8. Using the lv/block device works in RHEL 7 and CentOS 7 but ...


3

Instead of adding disks on the level of operation system you can do this directly in hadoop. You can add them to the dfs.datanode.data.dir property. The format is <property> <name>dfs.datanode.data.dir</name> <value>file:///disk/c0t2,/disk/c0t3,/dev/sde,/dev/sdf</value> </property> I am not 100% sure hadoop can ...


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