Can the EXT reserved block allocation be reduced on larger filesystems?

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  • The ext2, ext3, and ext4 filesystems reserve 5% of free blocks for use only by root. For large filesystems, this can be a significant amount of unavailable space. Can this be reduced?


  • Red Hat Enterprise Linux 5, 6 and 7.
  • EXT 2, 3 and 4.

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