svn commit: r186517 - head/sys/geom/vinum
Ulf Lilleengen
lulf at FreeBSD.org
Sat Dec 27 14:32:39 UTC 2008
Author: lulf
Date: Sat Dec 27 14:32:39 2008
New Revision: 186517
URL: http://svn.freebsd.org/changeset/base/186517
Log:
- Fix an issue with access permissions to underlying disks used by a gvinum
plex. If the plex is a raid5 plex, and is being written to, parity data might
have to be read from the underlying disks, requiring them to be opened for
reading as well as writing.
MFC after: 1 week
Modified:
head/sys/geom/vinum/geom_vinum_plex.c
Modified: head/sys/geom/vinum/geom_vinum_plex.c
==============================================================================
--- head/sys/geom/vinum/geom_vinum_plex.c Sat Dec 27 14:24:24 2008 (r186516)
+++ head/sys/geom/vinum/geom_vinum_plex.c Sat Dec 27 14:32:39 2008 (r186517)
@@ -663,11 +663,21 @@ gv_plex_normal_request(struct gv_plex *p
static int
gv_plex_access(struct g_provider *pp, int dr, int dw, int de)
{
+ struct gv_plex *p;
struct g_geom *gp;
struct g_consumer *cp, *cp2;
int error;
gp = pp->geom;
+ p = gp->softc;
+ KASSERT(p != NULL, ("NULL p"));
+
+ if (p->org == GV_PLEX_RAID5) {
+ if (dw > 0 && dr == 0)
+ dr = 1;
+ else if (dw < 0 && dr == 0)
+ dr = -1;
+ }
LIST_FOREACH(cp, &gp->consumer, consumer) {
error = g_access(cp, dr, dw, de);
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