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Use shutdown hooks to mark mirrors as clean after all file systems are

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unmounted.

Suggested by:	scottl
This commit is contained in:
Pawel Jakub Dawidek 2004-11-05 12:35:21 +00:00
parent 127cf38ee4
commit 6349471be3
1 changed files with 47 additions and 1 deletions
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48
sys/geom/mirror/g_mirror.c
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@ -37,6 +37,7 @@ __FBSDID("$FreeBSD$");
#include <sys/bio.h>
#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <sys/eventhandler.h>
#include <vm/uma.h>
#include <geom/geom.h>
#include <sys/proc.h>
@ -75,17 +76,22 @@ SYSCTL_UINT(_kern_geom_mirror, OID_AUTO, syncs_per_sec, CTLFLAG_RW,
G_MIRROR_DEBUG(4, "%s: Woken up %p.", __func__, (ident)); \
} while (0)
static eventhandler_tag g_mirror_ehtag = NULL;
static int g_mirror_destroy_geom(struct gctl_req *req, struct g_class *mp,
struct g_geom *gp);
static g_taste_t g_mirror_taste;
static void g_mirror_init(struct g_class *mp);
static void g_mirror_fini(struct g_class *mp);
struct g_class g_mirror_class = {
.name = G_MIRROR_CLASS_NAME,
.version = G_VERSION,
.ctlreq = g_mirror_config,
.taste = g_mirror_taste,
.destroy_geom = g_mirror_destroy_geom
.destroy_geom = g_mirror_destroy_geom,
.init = g_mirror_init,
.fini = g_mirror_fini
};
@ -454,6 +460,8 @@ g_mirror_destroy_device(struct g_mirror_softc *sc)
g_mirror_destroy_provider(sc);
for (disk = LIST_FIRST(&sc->sc_disks); disk != NULL;
disk = LIST_FIRST(&sc->sc_disks)) {
disk->d_flags &= ~G_MIRROR_DISK_FLAG_DIRTY;
g_mirror_update_metadata(disk);
g_mirror_destroy_disk(disk);
}
while ((ep = g_mirror_event_get(sc)) != NULL) {
@ -2772,6 +2780,44 @@ g_mirror_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
}
}
static void
g_mirror_shutdown(void *arg, int howto)
{
struct g_class *mp;
struct g_geom *gp, *gp2;
mp = arg;
g_topology_lock();
LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) {
if (gp->softc == NULL)
continue;
g_mirror_destroy(gp->softc, 1);
}
g_topology_unlock();
#if 0
tsleep(&gp, PRIBIO, "m:shutdown", hz * 20);
#endif
}
static void
g_mirror_init(struct g_class *mp)
{
g_mirror_ehtag = EVENTHANDLER_REGISTER(shutdown_post_sync,
g_mirror_shutdown, mp, SHUTDOWN_PRI_FIRST);
if (g_mirror_ehtag == NULL)
G_MIRROR_DEBUG(0, "Warning! Cannot register shutdown event.");
}
static void
g_mirror_fini(struct g_class *mp)
{
if (g_mirror_ehtag == NULL)
return;
EVENTHANDLER_DEREGISTER(shutdown_post_sync, g_mirror_ehtag);
}
static int
g_mirror_can_go(void)
{