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Allow re-writing parity on a RAID 0 to trivially succeed, and to set the 

clean bit.  This is somewhat bogus as RAID 0 does not have any parity,
but is a slightly cleaner than other solutions, and makes the handling
of clean bits for RAID 0 consistent with the handling of clean bits at
other RAID levels.
This commit is contained in:
oster 1999-04-07 14:17:10 +00:00
parent 1c15941926
commit 9f560505d4
1 changed files with 7 additions and 3 deletions
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10
sys/dev/raidframe/rf_netbsdkintf.c
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@ -1,4 +1,4 @@
/* $NetBSD: rf_netbsdkintf.c,v 1.16 1999/03/27 01:26:37 oster Exp $ */
/* $NetBSD: rf_netbsdkintf.c,v 1.17 1999/04/07 14:17:10 oster Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
@ -966,8 +966,12 @@ raidioctl(dev, cmd, data, flag, p)
/* initialize all parity */
case RAIDFRAME_REWRITEPARITY:
if (raidPtrs[unit]->Layout.map->faultsTolerated == 0)
return (EINVAL);
if (raidPtrs[unit]->Layout.map->faultsTolerated == 0) {
/* Parity for RAID 0 is trivially correct */
raidPtrs[unit]->parity_good = RF_RAID_CLEAN;
return(0);
}
/* borrow the thread of the requesting process */
raidPtrs[unit]->proc = p; /* Blah... :-p GO */
retcode = rf_RewriteParity(raidPtrs[unit]);