.\" the Free Software Foundation; either version 2 of the License, or
.\" (at your option) any later version.
.\" See file COPYING in distribution for details.
-.TH MDADM 8 "" v3.1.1
+.TH MDADM 8 "" v3.1.2
.SH NAME
mdadm \- manage MD devices
.I aka
the block where the superblock would be is overwritten even if it
doesn't appear to be valid.
+.TP
+.B \-\-kill\-subarray=
+If the device is a container and the argument to \-\-kill\-subarray
+specifies an inactive subarray in the container, then the subarray is
+deleted. Deleting all subarrays will leave an 'empty-container' or
+spare superblock on the drives. See \-\-zero\-superblock for completely
+removing a superblock. Note that some formats depend on the subarray
+index for generating a UUID, this command will fail if it would change
+the UUID of an active subarray.
+
.TP
.BR \-t ", " \-\-test
When used with