| .TH E2SCRUB 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@" |
| .SH NAME |
| e2scrub - check the contents of a mounted ext[234] filesystem |
| .SH SYNOPSYS |
| .B |
| e2scrub [OPTION] MOUNTPOINT | DEVICE |
| .SH DESCRIPTION |
| .B e2scrub |
| attempts to check (but not repair) all metadata in a mounted ext[234] |
| filesystem if the filesystem resides on a 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 |
| .IR lvname ".e2scrub" |
| and |
| .B udev |
| will not create symbolic links to it under |
| .IR /dev/disk . |
| Every attempt will be made to remove the snapshots prior to running |
| .BR e2scrub , |
| but in a dire situation it may be necessary to remove the snapshot manually. |
| |
| If no errors are found, |
| .B 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 filesystem should be taken offline and |
| .B e2fsck |
| run as soon as possible, because |
| .B e2scrub |
| does not fix corruptions. |
| If the filesystem is not repaired, |
| .B e2fsck |
| will be run before the next mount. |
| .SH OPTIONS |
| .TP |
| \fB-r\fR |
| Remove the e2scrub snapshot and exit without checking anything. |
| .TP |
| \fB-t\fR |
| Run |
| .B |
| fstrim(1) |
| on the mounted filesystem if no errors are found. |
| .TP |
| \fB-V\fR |
| Print version information and exit. |
| .SH EXIT CODE |
| The exit codes are the same as in |
| .BR e2fsck (8) |
| .SH SEE ALSO |
| .BR e2fsck (8) |
| .SH AUTHOR |
| Darrick J. Wong <darrick.wong@oracle.com> |
| .SH COPYRIGHT |
| Copyright ©2018 Oracle. License is GPLv2+. <http://www.gnu.org/licenses/gpl-2.0.html> |
