Can the block size of ext3/4 filesystem be changed from 4k to 1k and vice versa?

Solution Verified - Updated -

Issue

  • Can the block size of ext3/4 filesystem be changed from 4k to 1k and vice versa?
  • Is it possible to change the filesystem block size on-line?

Environment

  • Red Hat Enterprise Linux (RHEL) 4, 5, 6
  • ext3/ext3/ext4 filesystems

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