--- wikisrc/zfs.mdwn	2021/02/17 18:14:41	1.38
+++ wikisrc/zfs.mdwn	2021/02/18 00:26:35	1.39
@@ -187,7 +187,10 @@ disklabel partition or wedge.  However, 
 disklabels and gpt labels from a zvol.
 
 Doing "swapctl -a" on a zvol device node fails.  \todo Is it really
-true that NetBSD can't swap on a zvol?
+true that NetBSD can't swap on a zvol?  (When using a zvol for swap,
+standard advice is to avoid the "-s" option which avoids reserving the
+allocated space.  Standard advice is also to consider using a
+dedicated pool.)
 
 \todo Explain that one can export a zvol via iscsi.