/** lustre_cfg_bufs are a holdover from 1.4; we can still set these up from
* lctl (and do for echo cli/srv.
*/
int do_lcfg(char *cfgname, lnet_nid_t nid, int cmd,
char *s1, char *s2, char *s3, char *s4)
{
struct lustre_cfg_bufs bufs;
struct lustre_cfg * lcfg = NULL;
int rc;
CDEBUG(D_TRACE, "lcfg %s %#x %s %s %s %s\n", cfgname,
cmd, s1, s2, s3, s4);
lustre_cfg_bufs_reset(&bufs, cfgname);
if (s1)
lustre_cfg_bufs_set_string(&bufs, 1, s1);
if (s2)
lustre_cfg_bufs_set_string(&bufs, 2, s2);
if (s3)
lustre_cfg_bufs_set_string(&bufs, 3, s3);
if (s4)
lustre_cfg_bufs_set_string(&bufs, 4, s4);
lcfg = lustre_cfg_new(cmd, &bufs);
lcfg->lcfg_nid = nid;
rc = class_process_config(lcfg);
lustre_cfg_free(lcfg);
return(rc);
}
static int disconnect_echo_client(void)
{
struct lustre_cfg_bufs bufs;
struct lustre_cfg *lcfg = NULL;
int err;
ENTRY;
/* cleanup echo_client */
lustre_cfg_bufs_reset(&bufs, echo_dev_name);
lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
err = class_process_config(lcfg);
if (err < 0) {
lustre_cfg_free(lcfg);
CERROR("failed cleanup echo_client\n");
RETURN(-EINVAL);
}
/* detach echo_client */
lcfg->lcfg_command = LCFG_DETACH;
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err < 0) {
CERROR("failed detach echo_client\n");
RETURN(-EINVAL);
}
/* cleanup osc */
lustre_cfg_bufs_reset(&bufs, osc_dev_name);
lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
err = class_process_config(lcfg);
if (err < 0) {
lustre_cfg_free(lcfg);
CERROR("failed cleanup osc device\n");
RETURN(-EINVAL);
}
/* detach osc */
lcfg->lcfg_command = LCFG_DETACH;
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err < 0) {
CERROR("failed detach osc device\n");
RETURN(-EINVAL);
}
RETURN(0);
}
int liblustre_process_log(struct config_llog_instance *cfg,
char *mgsnid, char *profile,
int allow_recov)
{
struct lustre_cfg_bufs bufs;
struct lustre_cfg *lcfg;
char *peer = "MGS_UUID";
struct obd_device *obd;
struct obd_export *exp;
char *name = "mgc_dev";
class_uuid_t uuid;
struct obd_uuid mgc_uuid;
struct llog_ctxt *ctxt;
lnet_nid_t nid = 0;
char *mdsnid;
int err, rc = 0;
struct obd_connect_data *ocd = NULL;
ENTRY;
ll_generate_random_uuid(uuid);
class_uuid_unparse(uuid, &mgc_uuid);
nid = libcfs_str2nid(mgsnid);
if (nid == LNET_NID_ANY) {
CERROR("Can't parse NID %s\n", mgsnid);
RETURN(-EINVAL);
}
lustre_cfg_bufs_reset(&bufs, NULL);
lustre_cfg_bufs_set_string(&bufs, 1, peer);
lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
lcfg->lcfg_nid = nid;
rc = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (rc < 0)
GOTO(out, rc);
lustre_cfg_bufs_reset(&bufs, name);
lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MGC_NAME);
lustre_cfg_bufs_set_string(&bufs, 2, mgc_uuid.uuid);
lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
rc = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (rc < 0)
GOTO(out_del_uuid, rc);
lustre_cfg_bufs_reset(&bufs, name);
lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MGS_OBDNAME);
lustre_cfg_bufs_set_string(&bufs, 2, peer);
lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
rc = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (rc < 0)
GOTO(out_detach, rc);
while ((mdsnid = strsep(&mgsnid, ","))) {
nid = libcfs_str2nid(mdsnid);
lustre_cfg_bufs_reset(&bufs, NULL);
lustre_cfg_bufs_set_string(&bufs, 1, libcfs_nid2str(nid));
lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
lcfg->lcfg_nid = nid;
rc = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (rc) {
CERROR("Add uuid for %s failed %d\n",
libcfs_nid2str(nid), rc);
continue;
}
lustre_cfg_bufs_reset(&bufs, name);
lustre_cfg_bufs_set_string(&bufs, 1, libcfs_nid2str(nid));
lcfg = lustre_cfg_new(LCFG_ADD_CONN, &bufs);
lcfg->lcfg_nid = nid;
rc = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (rc) {
CERROR("Add conn for %s failed %d\n",
libcfs_nid2str(nid), rc);
continue;
}
}
obd = class_name2obd(name);
if (obd == NULL)
GOTO(out_cleanup, rc = -EINVAL);
OBD_ALLOC(ocd, sizeof(*ocd));
if (ocd == NULL)
GOTO(out_cleanup, rc = -ENOMEM);
ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_AT |
OBD_CONNECT_FULL20;
ocd->ocd_version = LUSTRE_VERSION_CODE;
rc = obd_connect(NULL, &exp, obd, &mgc_uuid, ocd, NULL);
if (rc) {
CERROR("cannot connect to %s at %s: rc = %d\n",
LUSTRE_MGS_OBDNAME, mgsnid, rc);
GOTO(out_cleanup, rc);
}
ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
cfg->cfg_flags |= CFG_F_COMPAT146;
rc = class_config_parse_llog(NULL, ctxt, profile, cfg);
llog_ctxt_put(ctxt);
if (rc) {
CERROR("class_config_parse_llog failed: rc = %d\n", rc);
}
/* We don't so much care about errors in cleaning up the config llog
* connection, as we have already read the config by this point. */
err = obd_disconnect(exp);
if (err)
CERROR("obd_disconnect failed: rc = %d\n", err);
out_cleanup:
if (ocd)
OBD_FREE(ocd, sizeof(*ocd));
lustre_cfg_bufs_reset(&bufs, name);
lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err)
CERROR("md_cleanup failed: rc = %d\n", err);
out_detach:
lustre_cfg_bufs_reset(&bufs, name);
lcfg = lustre_cfg_new(LCFG_DETACH, &bufs);
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err)
CERROR("md_detach failed: rc = %d\n", err);
out_del_uuid:
lustre_cfg_bufs_reset(&bufs, name);
lustre_cfg_bufs_set_string(&bufs, 1, peer);
lcfg = lustre_cfg_new(LCFG_DEL_UUID, &bufs);
err = class_process_config(lcfg);
if (err)
CERROR("del MDC UUID failed: rc = %d\n", err);
lustre_cfg_free(lcfg);
out:
RETURN(rc);
}
static int connect_echo_client(void)
{
struct lustre_cfg *lcfg;
struct lustre_cfg_bufs bufs;
lnet_nid_t nid;
char *peer = "ECHO_PEER_NID";
class_uuid_t osc_uuid, echo_uuid;
struct obd_uuid osc_uuid_str, echo_uuid_str;
int err;
ENTRY;
ll_generate_random_uuid(osc_uuid);
class_uuid_unparse(osc_uuid, &osc_uuid_str);
ll_generate_random_uuid(echo_uuid);
class_uuid_unparse(echo_uuid, &echo_uuid_str);
nid = libcfs_str2nid(echo_server_nid);
if (nid == LNET_NID_ANY) {
CERROR("Can't parse NID %s\n", echo_server_nid);
RETURN(-EINVAL);
}
/* add uuid */
lustre_cfg_bufs_reset(&bufs, NULL);
lustre_cfg_bufs_set_string(&bufs, 1, peer);
lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
lcfg->lcfg_nid = nid;
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err < 0) {
CERROR("failed add_uuid\n");
RETURN(-EINVAL);
}
/* attach osc */
lustre_cfg_bufs_reset(&bufs, osc_dev_name);
lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_OSC_NAME);
lustre_cfg_bufs_set_string(&bufs, 2, osc_uuid_str.uuid);
lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err < 0) {
CERROR("failed attach osc\n");
RETURN(-EINVAL);
}
/* setup osc */
lustre_cfg_bufs_reset(&bufs, osc_dev_name);
lustre_cfg_bufs_set_string(&bufs, 1, echo_server_ostname);
lustre_cfg_bufs_set_string(&bufs, 2, peer);
lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err < 0) {
CERROR("failed setup osc\n");
RETURN(-EINVAL);
}
/* attach echo_client */
lustre_cfg_bufs_reset(&bufs, echo_dev_name);
lustre_cfg_bufs_set_string(&bufs, 1, "echo_client");
lustre_cfg_bufs_set_string(&bufs, 2, echo_uuid_str.uuid);
lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err < 0) {
CERROR("failed attach echo_client\n");
RETURN(-EINVAL);
}
/* setup echo_client */
lustre_cfg_bufs_reset(&bufs, echo_dev_name);
lustre_cfg_bufs_set_string(&bufs, 1, osc_dev_name);
lustre_cfg_bufs_set_string(&bufs, 2, NULL);
lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
err = class_process_config(lcfg);
lustre_cfg_free(lcfg);
if (err < 0) {
CERROR("failed setup echo_client\n");
RETURN(-EINVAL);
}
RETURN(0);
}
