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-rw-r--r--sys-utils/fstrim.82
1 files changed, 2 insertions, 0 deletions
diff --git a/sys-utils/fstrim.8 b/sys-utils/fstrim.8
index eceaf2723..f86dda984 100644
--- a/sys-utils/fstrim.8
+++ b/sys-utils/fstrim.8
@@ -52,6 +52,8 @@ The other supplied options, like \fB\-\-offset\fR, \fB\-\-length\fR and
\fB-\-minimum\fR, are applied to all these devices.
Errors from filesystems that do not support the discard operation are silently
ignored.
+.IP "\fB\-d, \-\-dry\-run\fP"
+This option does everything apart from actually call FITRIM ioctl.
.IP "\fB\-o, \-\-offset\fP \fIoffset\fP"
Byte offset in the filesystem from which to begin searching for free blocks
to discard. The default value is zero, starting at the beginning of the