E2SCRUB(8)		    System Manager's Manual		    E2SCRUB(8)

NAME
       e2scrub - check the contents of a mounted ext[234] file system

SYNOPSIS
       e2scrub [OPTION] MOUNTPOINT | DEVICE

DESCRIPTION
       e2scrub attempts to check (but not repair) all metadata in a mounted
       ext[234] file system if the file system resides on an LVM logical
       volume.	The block device of the LVM logical volume can also be passed
       in.

       This program snapshots the volume and runs a file system check on the
       snapshot to look for corruption errors.	The LVM volume group must have
       at least 256MiB of unallocated space to dedicate to the snapshot or the
       logical volume will be skipped.	The snapshot will be named
       lvname.e2scrub and udev will not create symbolic links to it under
       /dev/disk.  Every attempt will be made to remove the snapshots prior to
       running e2scrub, but in a dire situation it may be necessary to remove
       the snapshot manually.

       If no errors are found, fstrim can be called on the file system if it
       is mounted.  If errors are found, the file system will be marked as
       having errors.  The file system should be taken offline and e2fsck run
       as soon as possible, because e2scrub does not fix corruptions.  If the
       file system is not repaired, e2fsck will be run before the next mount.

OPTIONS
       -n     Print what commands e2scrub would execute to check the file
	      system.  (Note: the commands will not actually be executed;
	      however, since e2scrub needs to run some commands to query the
	      system to determine what commands would be executed, it still
	      needs to be run as root.)

       -r     Remove the e2scrub snapshot and exit without checking anything.

       -t     Run fstrim(1) on the mounted file system if no errors are found.

       -V     Print version information and exit.

EXIT CODE
       The exit codes are the same as in e2fsck(8)

SEE ALSO
       e2fsck(8)

AUTHOR
       Darrick J. Wong <darrick.wong@oracle.com>

COPYRIGHT
       Copyright ©2018 Oracle.	License is GPLv2+.
       <http://www.gnu.org/licenses/gpl-2.0.html>

E2fsprogs version 1.47.3	   July 2025			    E2SCRUB(8)