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Prevent removing of the last active component from a mirror.

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PR:		kern/154860
Reviewed by:	pjd
MFC after:	1 week
This commit is contained in:
ae 2012-05-18 09:22:21 +00:00
parent a243137af2
commit c16abb371b
1 changed files with 12 additions and 1 deletions
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13
sys/geom/mirror/g_mirror_ctl.c
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@ -560,7 +560,7 @@ g_mirror_ctl_remove(struct gctl_req *req, struct g_class *mp)
const char *name;
char param[16];
int *nargs;
u_int i;
u_int i, active;
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {
@ -587,6 +587,7 @@ g_mirror_ctl_remove(struct gctl_req *req, struct g_class *mp)
"first.");
return;
}
active = g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE);
for (i = 1; i < (u_int)*nargs; i++) {
snprintf(param, sizeof(param), "arg%u", i);
name = gctl_get_asciiparam(req, param);
@ -599,6 +600,16 @@ g_mirror_ctl_remove(struct gctl_req *req, struct g_class *mp)
gctl_error(req, "No such provider: %s.", name);
continue;
}
if (disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) {
if (active > 1)
active--;
else {
gctl_error(req, "%s: Can't remove the last "
"ACTIVE component %s.", sc->sc_geom->name,
name);
continue;
}
}
g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DESTROY,
G_MIRROR_EVENT_DONTWAIT);
}