- rc = ptlrpc_import_recovery_state_machine(imp);
- if (rc != 0) {
- if (rc == -ENOTCONN) {
- CDEBUG(D_HA, "evicted/aborted by %s@%s during recovery;"
- "invalidating and reconnecting\n",
- obd2cli_tgt(imp->imp_obd),
- imp->imp_connection->c_remote_uuid.uuid);
- ptlrpc_connect_import(imp, NULL);
- RETURN(0);
- }
- } else {
- struct obd_connect_data *ocd;
- struct obd_export *exp;
- int ret;
- ret = req_capsule_get_size(&request->rq_pill, &RMF_CONNECT_DATA,
- RCL_SERVER);
- /* server replied obd_connect_data is always bigger */
- ocd = req_capsule_server_sized_get(&request->rq_pill,
- &RMF_CONNECT_DATA, ret);
-
- cfs_spin_lock(&imp->imp_lock);
- cfs_list_del(&imp->imp_conn_current->oic_item);
- cfs_list_add(&imp->imp_conn_current->oic_item,
- &imp->imp_conn_list);
- imp->imp_last_success_conn =
- imp->imp_conn_current->oic_last_attempt;
-
- if (ocd == NULL) {
- cfs_spin_unlock(&imp->imp_lock);
- CERROR("Wrong connect data from server\n");
- rc = -EPROTO;
- GOTO(out, rc);
- }
-
- imp->imp_connect_data = *ocd;
-
- exp = class_conn2export(&imp->imp_dlm_handle);
- cfs_spin_unlock(&imp->imp_lock);
-
- /* check that server granted subset of flags we asked for. */
- LASSERTF((ocd->ocd_connect_flags &
- imp->imp_connect_flags_orig) ==
- ocd->ocd_connect_flags, LPX64" != "LPX64,
- imp->imp_connect_flags_orig, ocd->ocd_connect_flags);
-
- if (!exp) {
- /* This could happen if export is cleaned during the
- connect attempt */
- CERROR("Missing export for %s\n",
- imp->imp_obd->obd_name);
- GOTO(out, rc = -ENODEV);
- }
- old_connect_flags = exp->exp_connect_flags;
- exp->exp_connect_flags = ocd->ocd_connect_flags;
- imp->imp_obd->obd_self_export->exp_connect_flags =
- ocd->ocd_connect_flags;
- class_export_put(exp);
-
- obd_import_event(imp->imp_obd, imp, IMP_EVENT_OCD);
-
- if (!ocd->ocd_ibits_known &&
- ocd->ocd_connect_flags & OBD_CONNECT_IBITS)
- CERROR("Inodebits aware server returned zero compatible"
- " bits?\n");
-
- if ((ocd->ocd_connect_flags & OBD_CONNECT_VERSION) &&
- (ocd->ocd_version > LUSTRE_VERSION_CODE +
- LUSTRE_VERSION_OFFSET_WARN ||
- ocd->ocd_version < LUSTRE_VERSION_CODE -
- LUSTRE_VERSION_OFFSET_WARN)) {
- /* Sigh, some compilers do not like #ifdef in the middle
- of macro arguments */
-#ifdef __KERNEL__
- const char *older =
- "older. Consider upgrading this client";
-#else
- const char *older =
- "older. Consider recompiling this application";
-#endif
- const char *newer = "newer than client version";
-
- LCONSOLE_WARN("Server %s version (%d.%d.%d.%d) "
- "is much %s (%s)\n",
- obd2cli_tgt(imp->imp_obd),
- OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
- OBD_OCD_VERSION_MINOR(ocd->ocd_version),
- OBD_OCD_VERSION_PATCH(ocd->ocd_version),
- OBD_OCD_VERSION_FIX(ocd->ocd_version),
- ocd->ocd_version > LUSTRE_VERSION_CODE ?
- newer : older, LUSTRE_VERSION_STRING);
- }
-
- if (ocd->ocd_connect_flags & OBD_CONNECT_CKSUM) {
- /* We sent to the server ocd_cksum_types with bits set
- * for algorithms we understand. The server masked off
- * the checksum types it doesn't support */
- if ((ocd->ocd_cksum_types & OBD_CKSUM_ALL) == 0) {
- LCONSOLE_WARN("The negotiation of the checksum "
- "alogrithm to use with server %s "
- "failed (%x/%x), disabling "
- "checksums\n",
- obd2cli_tgt(imp->imp_obd),
- ocd->ocd_cksum_types,
- OBD_CKSUM_ALL);
- cli->cl_checksum = 0;
- cli->cl_supp_cksum_types = OBD_CKSUM_CRC32;
- cli->cl_cksum_type = OBD_CKSUM_CRC32;
- } else {
- cli->cl_supp_cksum_types = ocd->ocd_cksum_types;
-
- if (ocd->ocd_cksum_types & OSC_DEFAULT_CKSUM)
- cli->cl_cksum_type = OSC_DEFAULT_CKSUM;
- else if (ocd->ocd_cksum_types & OBD_CKSUM_ADLER)
- cli->cl_cksum_type = OBD_CKSUM_ADLER;
- else
- cli->cl_cksum_type = OBD_CKSUM_CRC32;
- }
- } else {
- /* The server does not support OBD_CONNECT_CKSUM.
- * Enforce CRC32 for backward compatibility*/
- cli->cl_supp_cksum_types = OBD_CKSUM_CRC32;
- cli->cl_cksum_type = OBD_CKSUM_CRC32;
- }
-
- if (ocd->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
- cli->cl_max_pages_per_rpc =
- ocd->ocd_brw_size >> CFS_PAGE_SHIFT;
- }
-
- /* Reset ns_connect_flags only for initial connect. It might be
- * changed in while using FS and if we reset it in reconnect
- * this leads to losing user settings done before such as
- * disable lru_resize, etc. */
- if (old_connect_flags != exp->exp_connect_flags ||
- aa->pcaa_initial_connect) {
- CDEBUG(D_HA, "%s: Resetting ns_connect_flags to server "
- "flags: "LPX64"\n", imp->imp_obd->obd_name,
- ocd->ocd_connect_flags);
- imp->imp_obd->obd_namespace->ns_connect_flags =
- ocd->ocd_connect_flags;
- imp->imp_obd->obd_namespace->ns_orig_connect_flags =
- ocd->ocd_connect_flags;
- }
-
- if ((ocd->ocd_connect_flags & OBD_CONNECT_AT) &&
- (imp->imp_msg_magic == LUSTRE_MSG_MAGIC_V2))
- /* We need a per-message support flag, because
- a. we don't know if the incoming connect reply
- supports AT or not (in reply_in_callback)
- until we unpack it.
- b. failovered server means export and flags are gone
- (in ptlrpc_send_reply).
- Can only be set when we know AT is supported at
- both ends */
- imp->imp_msghdr_flags |= MSGHDR_AT_SUPPORT;
- else
- imp->imp_msghdr_flags &= ~MSGHDR_AT_SUPPORT;
-
- LASSERT((cli->cl_max_pages_per_rpc <= PTLRPC_MAX_BRW_PAGES) &&
- (cli->cl_max_pages_per_rpc > 0));
- }