DDF: explain why spare_refs are ignored.

Signed-off-by: NeilBrown <neilb@suse.de>
2014-04-10 12:57:25 +10:00 · 2014-04-10 12:57:25 +10:00 · 2770f45a43
parent 55e0007423
commit 2770f45a43
1 changed files with 4 additions and 1 deletions
--- a/super-ddf.c
+++ b/super-ddf.c
@ -343,7 +343,10 @@ struct vd_config {
 				 * for concat I hope) */
 	be64	array_blocks;	/* blocks in array */
 	__u8	pad1[8];
-	be32	spare_refs[8];
+	be32	spare_refs[8];	/* This is used to detect missing spares.
+				 * As we don't have an interface for that
+				 * the values are ignored.
+				 */
 	__u8	cache_pol[8];
 	__u8	bg_rate;
 	__u8	pad2[3];