mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
atomic_read(&obd->obd_refcount));
+ lmv_statfs_check_update(obd, tgt);
+
if (lmv->lmv_tgts_kobj)
/* Even if we failed to create the link, that's fine */
rc = sysfs_create_link(lmv->lmv_tgts_kobj,
obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
lmv->desc.ld_tgt_count = 0;
lmv->desc.ld_active_tgt_count = 0;
+ lmv->desc.ld_qos_maxage = 60;
lmv->max_def_easize = 0;
lmv->max_easize = 0;
return rc;
}
+static int lmv_statfs_update(void *cookie, int rc)
+{
+ struct obd_info *oinfo = cookie;
+ struct obd_device *obd = oinfo->oi_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt = oinfo->oi_tgt;
+ struct obd_statfs *osfs = oinfo->oi_osfs;
+
+ /*
+ * NB: don't deactivate TGT upon error, because we may not trigger async
+ * statfs any longer, then there is no chance to activate TGT.
+ */
+ if (!rc) {
+ spin_lock(&lmv->lmv_lock);
+ tgt->ltd_statfs = *osfs;
+ tgt->ltd_statfs_age = ktime_get_seconds();
+ spin_unlock(&lmv->lmv_lock);
+ }
+
+ return rc;
+}
+
+/* update tgt statfs async if it's ld_qos_maxage old */
+int lmv_statfs_check_update(struct obd_device *obd, struct lmv_tgt_desc *tgt)
+{
+ struct obd_info oinfo = {
+ .oi_obd = obd,
+ .oi_tgt = tgt,
+ .oi_cb_up = lmv_statfs_update,
+ };
+ int rc;
+
+ if (ktime_get_seconds() - tgt->ltd_statfs_age <
+ obd->u.lmv.desc.ld_qos_maxage)
+ return 0;
+
+ rc = obd_statfs_async(tgt->ltd_exp, &oinfo, 0, NULL);
+
+ return rc;
+}
+
static int lmv_get_root(struct obd_export *exp, const char *fileset,
struct lu_fid *fid)
{