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Implement the possibility to remove drives.

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This commit is contained in:
Lukas Ertl 2004-08-22 17:07:55 +00:00
parent c5be312a19
commit c4bdc6fc32
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=134176
1 changed files with 90 additions and 0 deletions
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90
sys/geom/vinum/geom_vinum_rm.c
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@ -40,6 +40,8 @@ __FBSDID("$FreeBSD$");
static void gv_cleanup_pp(void *, int);
static void gv_free_sd(struct gv_sd *);
static int gv_rm_drive(struct gv_softc *, struct gctl_req *,
struct gv_drive *, int);
static int gv_rm_plex(struct gv_softc *, struct gctl_req *,
struct gv_plex *, int);
static int gv_rm_sd(struct gv_softc *, struct gctl_req *, struct gv_sd *,
@ -55,6 +57,7 @@ gv_remove(struct g_geom *gp, struct gctl_req *req)
struct gv_volume *v;
struct gv_plex *p;
struct gv_sd *s;
struct gv_drive *d;
int *argc, *flags;
char *argv, buf[20];
int i, type, err;
@ -106,6 +109,16 @@ gv_remove(struct g_geom *gp, struct gctl_req *req)
if (err)
return;
break;
case GV_TYPE_DRIVE:
d = gv_find_drive(sc, argv);
if (d == NULL) {
gctl_error(req, "unknown drive '%s'", argv);
return;
}
err = gv_rm_drive(sc, req, d, *flags);
if (err)
return;
break;
default:
gctl_error(req, "unknown object '%s'", argv);
return;
@ -262,6 +275,83 @@ gv_rm_sd(struct gv_softc *sc, struct gctl_req *req, struct gv_sd *s, int flags)
return (0);
}
/* Remove a drive. */
static int
gv_rm_drive(struct gv_softc *sc, struct gctl_req *req, struct gv_drive *d, int flags)
{
struct g_geom *gp;
struct g_consumer *cp;
struct gv_freelist *fl, *fl2;
struct gv_plex *p;
struct gv_sd *s, *s2;
struct gv_volume *v;
int err;
KASSERT(d != NULL, ("gv_rm_drive: NULL d"));
gp = d->geom;
KASSERT(gp != NULL, ("gv_rm_drive: NULL gp"));
/* We don't allow to remove open drives. */
if (gv_is_open(gp)) {
gctl_error(req, "drive '%s' is open", d->name);
return (-1);
}
/* A drive with subdisks needs a recursive removal. */
if (!LIST_EMPTY(&d->subdisks) && !(flags & GV_FLAG_R)) {
gctl_error(req, "drive '%s' still has subdisks", d->name);
return (-1);
}
cp = LIST_FIRST(&gp->consumer);
err = g_access(cp, 0, 1, 0);
if (err) {
printf("GEOM_VINUM: gv_rm_drive: couldn't access '%s', errno: "
"%d\n", cp->provider->name, err);
return (err);
}
/* Clear the Vinum Magic. */
d->hdr->magic = GV_NOMAGIC;
g_topology_unlock();
err = g_write_data(cp, GV_HDR_OFFSET, d->hdr, GV_HDR_LEN);
if (err) {
printf("GEOM_VINUM: gv_rm_drive: couldn't write header to '%s'"
", errno: %d\n", cp->provider->name, err);
d->hdr->magic = GV_MAGIC;
}
g_topology_lock();
g_access(cp, 0, -1, 0);
/* Remove all associated subdisks, plexes, volumes. */
if (!LIST_EMPTY(&d->subdisks)) {
LIST_FOREACH_SAFE(s, &d->subdisks, from_drive, s2) {
p = s->plex_sc;
if (p != NULL) {
v = p->vol_sc;
if (v != NULL)
gv_rm_vol(sc, req, v, flags);
}
}
}
/* Clean up. */
LIST_FOREACH_SAFE(fl, &d->freelist, freelist, fl2) {
LIST_REMOVE(fl, freelist);
g_free(fl);
}
LIST_REMOVE(d, drive);
gp = d->geom;
d->geom = NULL;
g_free(d->hdr);
g_free(d);
gv_save_config_all(sc);
g_wither_geom(gp, ENXIO);
return (err);
}
/*
* This function is called from the event queue to clean up left-over subdisk
* providers.