Trying to run debugfs on a RHEL5 ext4 filesystem, prints the message "Filesystem has unsupported feature(s) while opening filesystem", why ?

Solution Verified - Updated -

Issue

  • Trying to run debugfs on a RHEL5 ext4 filesystem, prints the message "Filesystem has unsupported feature(s) while opening filesystem", why ?
# debugfs
debugfs 1.39 (29-May-2006)
debugfs:  open /dev/sdb1
/dev/sdb1: Filesystem has unsupported feature(s) while opening filesystem
debugfs:  ls -l
ls: Filesystem not open
debugfs:

Environment

  • Red Hat Enterprise Linux 5

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