/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2002 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * Lustre is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * Lustre is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #define EXPORT_SYMTAB #define DEBUG_SUBSYSTEM S_RPC #include #include #include #include #include #include #include #include extern int ptlrpc_init_portals(void); extern void ptlrpc_exit_portals(void); extern struct lprocfs_vars status_var_nm_1[]; extern struct lprocfs_vars status_class_var[]; int connmgr_setup(struct obd_device *obddev, obd_count len, void *buf) { struct recovd_obd *recovd = &obddev->u.recovd; int err; ENTRY; MOD_INC_USE_COUNT; memset(recovd, 0, sizeof(*recovd)); err = recovd_setup(recovd); if (err) { MOD_DEC_USE_COUNT; RETURN(err); } RETURN(0); } int connmgr_cleanup(struct obd_device *dev) { struct recovd_obd *recovd = &dev->u.recovd; int err; err = recovd_cleanup(recovd); if (err) LBUG(); MOD_DEC_USE_COUNT; RETURN(0); } int connmgr_iocontrol(unsigned int cmd, struct lustre_handle *hdl, int len, void *karg, void *uarg) { struct ptlrpc_connection *conn = NULL; struct obd_device *obd = class_conn2obd(hdl); struct recovd_obd *recovd = &obd->u.recovd; struct obd_ioctl_data *data = karg; struct list_head *tmp; int rc = 0; ENTRY; if (cmd != OBD_IOC_RECOVD_NEWCONN && cmd != OBD_IOC_RECOVD_FAILCONN) RETURN(-EINVAL); /* XXX ENOSYS? */ /* Find the connection that's been rebuilt or has failed. */ spin_lock(&recovd->recovd_lock); list_for_each(tmp, &recovd->recovd_troubled_items) { conn = list_entry(tmp, struct ptlrpc_connection, c_recovd_data.rd_managed_chain); LASSERT(conn->c_recovd_data.rd_recovd == recovd); /* sanity */ if (!strcmp(conn->c_remote_uuid, data->ioc_inlbuf1)) break; conn = NULL; } if (!conn) { if (cmd == OBD_IOC_RECOVD_NEWCONN) GOTO(out, rc = -EINVAL); /* XXX macroize/inline and share with loop above */ list_for_each(tmp, &recovd->recovd_managed_items) { conn = list_entry(tmp, struct ptlrpc_connection, c_recovd_data.rd_managed_chain); LASSERT(conn->c_recovd_data.rd_recovd == recovd); if (!strcmp(conn->c_remote_uuid, data->ioc_inlbuf1)) break; conn = NULL; } if (!conn) GOTO(out, rc = -EINVAL); } if (cmd == OBD_IOC_RECOVD_FAILCONN) { spin_unlock(&recovd->recovd_lock); recovd_conn_fail(conn); spin_lock(&recovd->recovd_lock); /* Jump straight to the "failed" phase of recovery. */ conn->c_recovd_data.rd_phase = RD_FAILED; goto out; } /* else (NEWCONN) */ spin_lock(&conn->c_lock); /* whatever happens, reset the INVALID flag */ conn->c_flags &= ~CONN_INVALID; /* XXX is this a good check? should we allow readdressing of * XXX conns that aren't in recovery? */ if (conn->c_recovd_data.rd_phase != RD_PREPARING) { spin_unlock(&conn->c_lock); GOTO(out, rc = -EALREADY); } if (data->ioc_inllen2) { CERROR("conn %p UUID change %s -> %s\n", conn, conn->c_remote_uuid, data->ioc_inlbuf2); strcpy(conn->c_remote_uuid, data->ioc_inlbuf2); } else { CERROR("conn %p UUID %s reconnected\n", conn, conn->c_remote_uuid); } ptlrpc_readdress_connection(conn, conn->c_remote_uuid); spin_unlock(&conn->c_lock); conn->c_recovd_data.rd_phase = RD_PREPARED; wake_up(&recovd->recovd_waitq); out: spin_unlock(&recovd->recovd_lock); RETURN(rc); } static int connmgr_connect(struct lustre_handle *conn, struct obd_device *src, obd_uuid_t cluuid, struct recovd_obd *recovd, ptlrpc_recovery_cb_t recover) { return class_connect(conn, src, cluuid); } int connmgr_attach(struct obd_device *dev, obd_count len, void *data) { return lprocfs_reg_obd(dev, status_var_nm_1, dev); } int conmgr_detach(struct obd_device *dev) { return lprocfs_dereg_obd(dev); } /* use obd ops to offer management infrastructure */ static struct obd_ops recovd_obd_ops = { o_attach: connmgr_attach, o_detach: conmgr_detach, o_setup: connmgr_setup, o_cleanup: connmgr_cleanup, o_iocontrol: connmgr_iocontrol, o_connect: connmgr_connect, o_disconnect: class_disconnect }; static int __init ptlrpc_init(void) { int rc; rc = ptlrpc_init_portals(); if (rc) RETURN(rc); ptlrpc_init_connection(); rc = class_register_type(&recovd_obd_ops, status_class_var, LUSTRE_HA_NAME); if (rc) RETURN(rc); ptlrpc_put_connection_superhack = ptlrpc_put_connection; return 0; } static void __exit ptlrpc_exit(void) { class_unregister_type(LUSTRE_HA_NAME); ptlrpc_exit_portals(); ptlrpc_cleanup_connection(); } /* recovd.c */ EXPORT_SYMBOL(ptlrpc_recovd); EXPORT_SYMBOL(recovd_conn_fail); EXPORT_SYMBOL(recovd_conn_manage); EXPORT_SYMBOL(recovd_conn_fixed); EXPORT_SYMBOL(recovd_setup); EXPORT_SYMBOL(recovd_cleanup); /* connection.c */ EXPORT_SYMBOL(ptlrpc_readdress_connection); EXPORT_SYMBOL(ptlrpc_get_connection); EXPORT_SYMBOL(ptlrpc_put_connection); EXPORT_SYMBOL(ptlrpc_connection_addref); EXPORT_SYMBOL(ptlrpc_init_connection); EXPORT_SYMBOL(ptlrpc_cleanup_connection); /* niobuf.c */ EXPORT_SYMBOL(ptlrpc_send_bulk); EXPORT_SYMBOL(ptlrpc_register_bulk); EXPORT_SYMBOL(ptlrpc_abort_bulk); EXPORT_SYMBOL(ptlrpc_reply); EXPORT_SYMBOL(ptlrpc_error); EXPORT_SYMBOL(ptlrpc_resend_req); EXPORT_SYMBOL(ptl_send_rpc); EXPORT_SYMBOL(ptlrpc_link_svc_me); EXPORT_SYMBOL(obd_brw_set_free); EXPORT_SYMBOL(obd_brw_set_new); EXPORT_SYMBOL(obd_brw_set_add); /* client.c */ EXPORT_SYMBOL(ptlrpc_init_client); EXPORT_SYMBOL(ptlrpc_cleanup_client); EXPORT_SYMBOL(ptlrpc_req_to_uuid); EXPORT_SYMBOL(ptlrpc_uuid_to_connection); EXPORT_SYMBOL(ptlrpc_queue_wait); EXPORT_SYMBOL(ptlrpc_continue_req); EXPORT_SYMBOL(ptlrpc_replay_req); EXPORT_SYMBOL(ptlrpc_restart_req); EXPORT_SYMBOL(ptlrpc_prep_req); EXPORT_SYMBOL(ptlrpc_free_req); EXPORT_SYMBOL(ptlrpc_req_finished); EXPORT_SYMBOL(ptlrpc_prep_bulk); EXPORT_SYMBOL(ptlrpc_free_bulk); EXPORT_SYMBOL(ptlrpc_prep_bulk_page); EXPORT_SYMBOL(ptlrpc_free_bulk_page); EXPORT_SYMBOL(ll_brw_sync_wait); EXPORT_SYMBOL(ptlrpc_abort_inflight); /* service.c */ EXPORT_SYMBOL(ptlrpc_init_svc); EXPORT_SYMBOL(ptlrpc_stop_all_threads); EXPORT_SYMBOL(ptlrpc_start_thread); EXPORT_SYMBOL(ptlrpc_unregister_service); /* pack_generic.c */ EXPORT_SYMBOL(lustre_pack_msg); EXPORT_SYMBOL(lustre_msg_size); EXPORT_SYMBOL(lustre_unpack_msg); EXPORT_SYMBOL(lustre_msg_buf); /* recover.c */ EXPORT_SYMBOL(ptlrpc_run_recovery_upcall); EXPORT_SYMBOL(ptlrpc_reconnect_import); EXPORT_SYMBOL(ptlrpc_replay); EXPORT_SYMBOL(ptlrpc_resend); EXPORT_SYMBOL(ptlrpc_wake_delayed); MODULE_AUTHOR("Cluster File Systems, Inc "); MODULE_DESCRIPTION("Lustre Request Processor v1.0"); MODULE_LICENSE("GPL"); module_init(ptlrpc_init); module_exit(ptlrpc_exit);