Replay an undo log for an ext2/ext3/ext4 filesystem
will replay the undo log
for an ext2/ext3/ext4 filesystem found on
This can be
used to undo a failed operation by an e2fsprogs program.
will check the filesystem superblock to make sure the undo log matches
with the filesystem on the device. If they do not match,
will refuse to apply the undo log as a safety mechanism. The
option disables this safety mechanism.
Display a usage message.
Dry-run; do not actually write blocks back to the filesystem.
- -o offset
Specify the filesystem's
(in bytes) from the beginning of the device or file.
Report which block we're currently replaying.