Author: ae Date: Fri May 18 09:19:07 2012 New Revision: 235599 URL: http://svn.freebsd.org/changeset/base/235599
Log: Introduce new device flag G_MIRROR_DEVICE_FLAG_TASTING. It should protect geom from destroying while it is tasting. PR: kern/154860 Reviewed by: pjd MFC after: 1 week Modified: head/sys/geom/mirror/g_mirror.c head/sys/geom/mirror/g_mirror.h Modified: head/sys/geom/mirror/g_mirror.c ============================================================================== --- head/sys/geom/mirror/g_mirror.c Fri May 18 05:36:04 2012 (r235598) +++ head/sys/geom/mirror/g_mirror.c Fri May 18 09:19:07 2012 (r235599) @@ -1693,6 +1693,8 @@ g_mirror_can_destroy(struct g_mirror_sof gp = sc->sc_geom; if (gp->softc == NULL) return (1); + if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_TASTING) != 0) + return (0); LIST_FOREACH(cp, &gp->consumer, consumer) { if (g_mirror_is_busy(sc, cp)) return (0); @@ -3054,6 +3056,7 @@ g_mirror_taste(struct g_class *mp, struc G_MIRROR_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); g_topology_unlock(); sx_xlock(&sc->sc_lock); + sc->sc_flags |= G_MIRROR_DEVICE_FLAG_TASTING; error = g_mirror_add_disk(sc, pp, &md); if (error != 0) { G_MIRROR_DEBUG(0, "Cannot add disk %s to %s (error=%d).", @@ -3066,6 +3069,12 @@ g_mirror_taste(struct g_class *mp, struc } gp = NULL; } + sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_TASTING; + if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_DESTROY) != 0) { + g_mirror_destroy(sc, G_MIRROR_DESTROY_HARD); + g_topology_lock(); + return (NULL); + } sx_xunlock(&sc->sc_lock); g_topology_lock(); return (gp); Modified: head/sys/geom/mirror/g_mirror.h ============================================================================== --- head/sys/geom/mirror/g_mirror.h Fri May 18 05:36:04 2012 (r235598) +++ head/sys/geom/mirror/g_mirror.h Fri May 18 09:19:07 2012 (r235599) @@ -157,6 +157,7 @@ struct g_mirror_event { #define G_MIRROR_DEVICE_FLAG_DESTROY 0x0100000000000000ULL #define G_MIRROR_DEVICE_FLAG_WAIT 0x0200000000000000ULL #define G_MIRROR_DEVICE_FLAG_DESTROYING 0x0400000000000000ULL +#define G_MIRROR_DEVICE_FLAG_TASTING 0x0800000000000000ULL #define G_MIRROR_DEVICE_STATE_STARTING 0 #define G_MIRROR_DEVICE_STATE_RUNNING 1 _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"