Can we use Red Hat Enterprise Linux 7 ext4 filesystem in Red Hat Enterprise Linux 6?

Solution In Progress - Updated -

Issue

  • tune2fs fails with the following error :
tune2fs: Filesystem has unsupported feature(s) while trying to open xxx
Couldn't find valid filesystem superblock.
  • resize2fs fails with the following error :
resize2fs: Filesystem has unsupported feature(s) while trying to open xxx
Couldn't find valid filesystem superblock.
  • e2fsck fails on filesystem with following error :
xxx has unsupported feature(s): 64bit

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • ext4

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