[src/netbsd-1-4]: src/sys/dev/raidframe pull up rev 1.5 from trunk (requested...

[cgd <cgd%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9fe51c945d76
branches:  netbsd-1-4
changeset: 469508:9fe51c945d76
user:      cgd <cgd%NetBSD.org@localhost>
date:      Mon Sep 27 05:04:41 1999 +0000

description:
pull up rev 1.5 from trunk (requested by oster):
  Do not allow rebuilding parity on a degraded RAID set.  Also, don't
  allow parity rewriting on a RAID 0 set, as that makes no sense.

diffstat:

 sys/dev/raidframe/rf_parityscan.c |  15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletions(-)

diffs (29 lines):

diff -r 3ddf46c485b3 -r 9fe51c945d76 sys/dev/raidframe/rf_parityscan.c
--- a/sys/dev/raidframe/rf_parityscan.c Mon Sep 27 05:04:10 1999 +0000
+++ b/sys/dev/raidframe/rf_parityscan.c Mon Sep 27 05:04:41 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rf_parityscan.c,v 1.4 1999/03/14 22:10:46 oster Exp $  */
+/*     $NetBSD: rf_parityscan.c,v 1.4.2.1 1999/09/27 05:04:41 cgd Exp $        */
 /*
  * Copyright (c) 1995 Carnegie-Mellon University.
  * All rights reserved.
@@ -67,6 +67,19 @@
        RF_PhysDiskAddr_t pda;
        RF_SectorNum_t i;
 
+       if (raidPtr->Layout.map->faultsTolerated == 0) {
+               /* There isn't any parity. Call it "okay." */
+               return (RF_PARITY_OKAY);
+       }
+       if (raidPtr->status[0] != rf_rs_optimal) {
+               /*
+                * We're in degraded mode.  Don't try to verify parity now! 
+                * XXX: this should be a "we don't want to", not a 
+                * "we can't" error. 
+                */
+               return (RF_PARITY_COULD_NOT_VERIFY);
+       }
+
        pda.startSector = 0;
        pda.numSector = raidPtr->Layout.sectorsPerStripeUnit;