e2undo

Replay undo logs for an ext2/ext3/ext4 filesystem. This can be used to undo a failed operation by an e2fsprogs program. More information: https://manned.org/e2undo.

  • Display information about a specific undo file:

e2undo -h path/to/undo_file /dev/sdXN

  • Perform a dry-run and display the candidate blocks for replaying:

e2undo -nv path/to/undo_file /dev/sdXN

  • Perform an undo operation:

e2undo path/to/undo_file /dev/sdXN

  • Perform an undo operation and display verbose information:

e2undo -v path/to/undo_file /dev/sdXN

  • Write the old contents of the block to an undo file before overwriting a file system block:

e2undo -z path/to/file.e2undo path/to/undo_file /dev/sdXN

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