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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.

• 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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