E2UNDO(8)                  System Manager's Manual                 E2UNDO(8)

NAME         top

       e2undo - Replay an undo log for an ext2/ext3/ext4 filesystem

SYNOPSIS         top

       e2undo [ -f ] [ -h ] [ -n ] [ -v ] undo_log device

DESCRIPTION         top

       e2undo will replay the undo log undo_log for an ext2/ext3/ext4
       filesystem found on device.  This can be used to undo a failed
       operation by an e2fsprogs program.

OPTIONS         top

       -f     Normally, e2undo will check the filesystem superblock to make
              sure the undo log matches with the filesystem on the device.
              If they do not match, e2undo will refuse to apply the undo log
              as a safety mechanism.  The -f option disables this safety

       -h     Display a usage message.

       -n     Dry-run; do not actually write blocks back to the filesystem.

       -o offset
              Specify the filesystem's offset (in bytes) from the beginning
              of the device or file.

       -v     Report which block we're currently replaying.

AUTHOR         top

       e2undo was written by Aneesh Kumar K.V.

AVAILABILITY         top

       e2undo is part of the e2fsprogs package and is available from

SEE ALSO         top

       mke2fs(8), tune2fs(8)

COLOPHON         top

       This page is part of the e2fsprogs (utilities for ext2/3/4
       filesystems) project.  Information about the project can be found at
       ⟨⟩.  It is not known how to report
       bugs for this man page; if you know, please send a mail to  This page was obtained from the project's
       upstream Git repository 
       ⟨git://⟩ on 2017-03-13.
       If you discover any rendering problems in this HTML version of the
       page, or you believe there is a better or more up-to-date source for
       the page, or you have corrections or improvements to the information
       in this COLOPHON (which is not part of the original manual page),
       send a mail to

E2fsprogs version 1.43.5-WIP    February 2017                      E2UNDO(8)