Stripe size is \fIn\fR bytes, or \fBK\fRibi-, \fBM\fRebi-,
\fBG\fRibi-, \fBT\fRebi-, \fBP\fRebi-, or \fBE\fRbi-abytes if a
suffix is given. For composite files, this matches the stripe
-size of any non-extension component.
+size of the last initialized non-extension component.
.TP
.BR --extension-size | --ext-size | -z
Extension size is \fIn\fR bytes, or \fBK\fRibi-, \fBM\fRebi-,