int mdt_init_idmap(struct tgt_session_info *tsi)
{
struct ptlrpc_request *req = tgt_ses_req(tsi);
struct mdt_export_data *med = mdt_req2med(req);
struct obd_export *exp = req->rq_export;
char *client = libcfs_nid2str(req->rq_peer.nid);
int rc = 0;
ENTRY;
if (exp_connect_rmtclient(exp)) {
mutex_lock(&med->med_idmap_mutex);
if (!med->med_idmap)
med->med_idmap = lustre_idmap_init();
mutex_unlock(&med->med_idmap_mutex);
if (IS_ERR(med->med_idmap)) {
long err = PTR_ERR(med->med_idmap);
med->med_idmap = NULL;
CERROR("%s: client %s -> target %s "
"failed to init idmap [%ld]!\n",
tgt_name(tsi->tsi_tgt), client,
tgt_name(tsi->tsi_tgt), err);
RETURN(err);
} else if (!med->med_idmap) {
CERROR("%s: client %s -> target %s "
"failed to init(2) idmap!\n",
tgt_name(tsi->tsi_tgt), client,
tgt_name(tsi->tsi_tgt));
RETURN(-ENOMEM);
}
CDEBUG(D_SEC, "%s: client %s -> target %s is remote.\n",
tgt_name(tsi->tsi_tgt), client,
tgt_name(tsi->tsi_tgt));
/* NB, MDS_CONNECT establish root idmap too! */
rc = mdt_handle_idmap(tsi);
}
RETURN(rc);
}
int mdt_init_idmap(struct mdt_thread_info *info)
{
struct ptlrpc_request *req = mdt_info_req(info);
struct mdt_export_data *med = mdt_req2med(req);
struct obd_export *exp = req->rq_export;
char *client = libcfs_nid2str(req->rq_peer.nid);
struct obd_device *obd = exp->exp_obd;
int rc = 0;
ENTRY;
if (exp_connect_rmtclient(exp)) {
cfs_down(&med->med_idmap_sem);
if (!med->med_idmap)
med->med_idmap = lustre_idmap_init();
cfs_up(&med->med_idmap_sem);
if (IS_ERR(med->med_idmap)) {
long err = PTR_ERR(med->med_idmap);
med->med_idmap = NULL;
CERROR("client %s -> target %s "
"failed to init idmap [%ld]!\n",
client, obd->obd_name, err);
RETURN(err);
} else if (!med->med_idmap) {
CERROR("client %s -> target %s "
"failed to init(2) idmap!\n",
client, obd->obd_name);
RETURN(-ENOMEM);
}
CDEBUG(D_SEC, "client %s -> target %s is remote.\n",
client, obd->obd_name);
/* NB, MDS_CONNECT establish root idmap too! */
rc = mdt_handle_idmap(info);
}
RETURN(rc);
}