/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program 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 version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ /* * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2010, 2017, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/mgs/mgs_handler.c * * Author: Nathan Rutman * Author: Alex Zhuravlev * Author: Mikhail Pershin */ #define DEBUG_SUBSYSTEM S_MGS #define D_MGS D_CONFIG #include #include #include #include #include #include "mgs_internal.h" /* * Regular MGS handlers */ static int mgs_connect(struct tgt_session_info *tsi) { struct ptlrpc_request *req = tgt_ses_req(tsi); int rc; ENTRY; CFS_FAIL_TIMEOUT(OBD_FAIL_MGS_CONNECT_NET, cfs_fail_val); rc = tgt_connect(tsi); if (rc) RETURN(rc); if (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1) lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT); RETURN(0); } static int mgs_disconnect(struct tgt_session_info *tsi) { int rc; ENTRY; LASSERT(tsi->tsi_exp); rc = tgt_disconnect(tsi); if (rc) RETURN(err_serious(rc)); RETURN(0); } static int mgs_exception(struct tgt_session_info *tsi) { ENTRY; tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_EXCEPTION); RETURN(0); } static inline bool str_starts_with(const char *str, const char *prefix) { return strncmp(str, prefix, strlen(prefix)) == 0; } #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 18, 53, 0) static int mgs_set_info(struct tgt_session_info *tsi) { struct mgs_thread_info *mgi; struct mgs_send_param *msp; size_t param_len; char *s; ENTRY; mgi = mgs_env_info(tsi->tsi_env); if (IS_ERR(mgi)) RETURN(err_serious(PTR_ERR(mgi))); msp = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM); if (msp == NULL) RETURN(err_serious(-EFAULT)); param_len = strnlen(msp->mgs_param, sizeof(msp->mgs_param)); if (param_len == 0 || param_len == sizeof(msp->mgs_param)) RETURN(-EINVAL); /* We only allow '*.lov.stripe{size,count,offset}=*' from an RPC. */ s = strchr(msp->mgs_param, '.'); if (s == NULL) RETURN(-EINVAL); if (!str_starts_with(s + 1, "lov.stripesize=") && !str_starts_with(s + 1, "lov.stripecount=") && !str_starts_with(s + 1, "lov.stripeoffset=")) RETURN(-EINVAL); /* do nothing */ CDEBUG(D_MGS, "%s: ignoring set info '%s'\n", tgt_name(tsi->tsi_tgt), msp->mgs_param); RETURN(0); } #endif enum ast_type { AST_CONFIG = 1, AST_PARAMS = 2, AST_IR = 3, AST_BARRIER = 4, }; static int mgs_completion_ast_generic(struct ldlm_lock *lock, __u64 flags, void *cbdata, enum ast_type type) { ENTRY; if (!(flags & LDLM_FL_BLOCKED_MASK)) { struct fs_db *fsdb; /* l_ast_data is used as a marker to avoid cancel ldlm lock * twice. See LU-2317. */ lock_res_and_lock(lock); fsdb = (struct fs_db *)lock->l_ast_data; lock->l_ast_data = NULL; unlock_res_and_lock(lock); if (fsdb != NULL) { struct lustre_handle lockh; switch(type) { case AST_CONFIG: /* clear the bit before lock put */ clear_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags); break; case AST_PARAMS: clear_bit(FSDB_REVOKING_PARAMS, &fsdb->fsdb_flags); break; case AST_IR: mgs_ir_notify_complete(fsdb); break; case AST_BARRIER: break; default: LBUG(); } ldlm_lock2handle(lock, &lockh); ldlm_lock_decref_and_cancel(&lockh, LCK_EX); } } RETURN(ldlm_completion_ast(lock, flags, cbdata)); } static int mgs_completion_ast_config(struct ldlm_lock *lock, __u64 flags, void *cbdata) { return mgs_completion_ast_generic(lock, flags, cbdata, AST_CONFIG); } static int mgs_completion_ast_params(struct ldlm_lock *lock, __u64 flags, void *cbdata) { return mgs_completion_ast_generic(lock, flags, cbdata, AST_PARAMS); } static int mgs_completion_ast_ir(struct ldlm_lock *lock, __u64 flags, void *cbdata) { return mgs_completion_ast_generic(lock, flags, cbdata, AST_IR); } static int mgs_completion_ast_barrier(struct ldlm_lock *lock, __u64 flags, void *cbdata) { return mgs_completion_ast_generic(lock, flags, cbdata, AST_BARRIER); } void mgs_revoke_lock(struct mgs_device *mgs, struct fs_db *fsdb, int type) { ldlm_completion_callback cp = NULL; struct lustre_handle lockh = { .cookie = 0, }; struct ldlm_res_id res_id; __u64 flags = LDLM_FL_ATOMIC_CB; int rc; ENTRY; LASSERT(fsdb->fsdb_name[0] != '\0'); rc = mgc_fsname2resid(fsdb->fsdb_name, &res_id, type); LASSERT(rc == 0); switch (type) { case CONFIG_T_CONFIG: case CONFIG_T_NODEMAP: cp = mgs_completion_ast_config; if (test_and_set_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags)) rc = -EALREADY; break; case CONFIG_T_PARAMS: cp = mgs_completion_ast_params; if (test_and_set_bit(FSDB_REVOKING_PARAMS, &fsdb->fsdb_flags)) rc = -EALREADY; break; case CONFIG_T_RECOVER: cp = mgs_completion_ast_ir; break; case CONFIG_T_BARRIER: cp = mgs_completion_ast_barrier; break; default: break; } if (!rc) { LASSERT(cp != NULL); rc = ldlm_cli_enqueue_local(NULL, mgs->mgs_obd->obd_namespace, &res_id, LDLM_PLAIN, NULL, LCK_EX, &flags, ldlm_blocking_ast, cp, NULL, fsdb, 0, LVB_T_NONE, NULL, &lockh); if (rc != ELDLM_OK) { CERROR("%s: can't take cfg lock for %#llx/%#llx : rc = %d\n", mgs->mgs_obd->obd_name, le64_to_cpu(res_id.name[0]), le64_to_cpu(res_id.name[1]), rc); if (type == CONFIG_T_CONFIG) clear_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags); if (type == CONFIG_T_PARAMS) clear_bit(FSDB_REVOKING_PARAMS, &fsdb->fsdb_flags); } /* lock has been cancelled in completion_ast. */ } RETURN_EXIT; } /* rc=0 means ok 1 means update <0 means error */ static int mgs_check_target(const struct lu_env *env, struct mgs_device *mgs, struct mgs_target_info *mti) { int rc; ENTRY; rc = mgs_check_index(env, mgs, mti); if (rc == 0) { LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but " "this MGS does not know about it, preventing " "registration.\n", mti->mti_svname); rc = -ENOENT; } else if (rc == -1) { LCONSOLE_ERROR_MSG(0x13c, "Client log %s-client has " "disappeared! Regenerating all logs.\n", mti->mti_fsname); mti->mti_flags |= LDD_F_WRITECONF; rc = 1; } else { /* Index is correctly marked as used */ rc = 0; } RETURN(rc); } /* Ensure this is not a failover node that is connecting first*/ static int mgs_check_failover_reg(struct mgs_target_info *mti) { lnet_nid_t nid; char *ptr; int i; ptr = mti->mti_params; while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) { while (class_parse_nid_quiet(ptr, &nid, &ptr) == 0) { for (i = 0; i < mti->mti_nid_count; i++) { if (nid == mti->mti_nids[i]) { LCONSOLE_WARN("Denying initial registration attempt from nid %s, specified as failover\n", libcfs_nid2str(nid)); return -EADDRNOTAVAIL; } } } } return 0; } /* Called whenever a target starts up. Flags indicate first connect, etc. */ static int mgs_target_reg(struct tgt_session_info *tsi) { struct obd_device *obd = tsi->tsi_exp->exp_obd; struct mgs_device *mgs = exp2mgs_dev(tsi->tsi_exp); struct mgs_target_info *mti, *rep_mti; struct fs_db *b_fsdb = NULL; /* barrier fsdb */ struct fs_db *c_fsdb = NULL; /* config fsdb */ char barrier_name[20]; int opc; int rc = 0; ENTRY; rc = lu_env_refill((struct lu_env *)tsi->tsi_env); if (rc) return err_serious(rc); tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_REG); mti = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO); if (mti == NULL) { DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no mgs_send_param"); RETURN(err_serious(-EFAULT)); } down_read(&mgs->mgs_barrier_rwsem); if (OCD_HAS_FLAG(&tgt_ses_req(tsi)->rq_export->exp_connect_data, IMP_RECOV)) opc = mti->mti_flags & LDD_F_OPC_MASK; else opc = LDD_F_OPC_REG; if (opc == LDD_F_OPC_READY) { CDEBUG(D_MGS, "fs: %s index: %d is ready to reconnect.\n", mti->mti_fsname, mti->mti_stripe_index); rc = mgs_ir_update(tsi->tsi_env, mgs, mti); if (rc) { LASSERT(!(mti->mti_flags & LDD_F_IR_CAPABLE)); CERROR("%s: Update IR return failure: rc = %d\n", mti->mti_fsname, rc); } GOTO(out_norevoke, rc); } /* Do not support unregistering right now. */ if (opc != LDD_F_OPC_REG) GOTO(out_norevoke, rc = -EINVAL); snprintf(barrier_name, sizeof(barrier_name) - 1, "%s-%s", mti->mti_fsname, BARRIER_FILENAME); rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, barrier_name, &b_fsdb); if (rc) { CERROR("%s: Can't get db for %s: rc = %d\n", mti->mti_fsname, barrier_name, rc); GOTO(out_norevoke, rc); } CDEBUG(D_MGS, "fs: %s index: %d is registered to MGS.\n", mti->mti_fsname, mti->mti_stripe_index); if (mti->mti_flags & LDD_F_SV_TYPE_MDT) { if (b_fsdb->fsdb_barrier_status == BS_FREEZING_P1 || b_fsdb->fsdb_barrier_status == BS_FREEZING_P2 || b_fsdb->fsdb_barrier_status == BS_FROZEN) { LCONSOLE_WARN("%s: the system is in barrier, refuse " "the connection from MDT %s temporary\n", obd->obd_name, mti->mti_svname); GOTO(out_norevoke, rc = -EBUSY); } if (!(exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_BARRIER) && !b_fsdb->fsdb_barrier_disabled) { LCONSOLE_WARN("%s: the MDT %s does not support write " "barrier, so disable barrier on the " "whole system.\n", obd->obd_name, mti->mti_svname); b_fsdb->fsdb_barrier_disabled = 1; } } if (mti->mti_flags & LDD_F_NEED_INDEX) mti->mti_flags |= LDD_F_WRITECONF; if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPDATE))) { /* We're just here as a startup ping. */ CDEBUG(D_MGS, "Server %s is running on %s\n", mti->mti_svname, obd_export_nid2str(tsi->tsi_exp)); rc = mgs_check_target(tsi->tsi_env, mgs, mti); /* above will set appropriate mti flags */ if (rc <= 0) /* Nothing wrong, or fatal error */ GOTO(out_norevoke, rc); } else if (!(mti->mti_flags & LDD_F_NO_PRIMNODE)) { rc = mgs_check_failover_reg(mti); if (rc) GOTO(out_norevoke, rc); } OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10); if (mti->mti_flags & LDD_F_WRITECONF) { if (mti->mti_flags & LDD_F_SV_TYPE_MDT && mti->mti_stripe_index == 0) { mgs_put_fsdb(mgs, b_fsdb); b_fsdb = NULL; rc = mgs_erase_logs(tsi->tsi_env, mgs, mti->mti_fsname); LCONSOLE_WARN("%s: Logs for fs %s were removed by user " "request. All servers must be restarted " "in order to regenerate the logs: rc = %d" "\n", obd->obd_name, mti->mti_fsname, rc); if (rc && rc != -ENOENT) GOTO(out_norevoke, rc); rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, barrier_name, &b_fsdb); if (rc) { CERROR("Can't get db for %s: %d\n", barrier_name, rc); GOTO(out_norevoke, rc); } if (!(exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_BARRIER)) { LCONSOLE_WARN("%s: the MDT %s does not support " "write barrier, disable barrier " "on the whole system.\n", obd->obd_name, mti->mti_svname); b_fsdb->fsdb_barrier_disabled = 1; } } else if (mti->mti_flags & (LDD_F_SV_TYPE_OST | LDD_F_SV_TYPE_MDT)) { rc = mgs_erase_log(tsi->tsi_env, mgs, mti->mti_svname); LCONSOLE_WARN("%s: Regenerating %s log by user " "request: rc = %d\n", obd->obd_name, mti->mti_svname, rc); if (rc) GOTO(out_norevoke, rc); } mti->mti_flags |= LDD_F_UPDATE; } rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, mti->mti_fsname, &c_fsdb); if (rc) { CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc); GOTO(out_norevoke, rc); } /* * Log writing contention is handled by the fsdb_mutex. * * It should be alright if someone was reading while we were * updating the logs - if we revoke at the end they will just update * from where they left off. */ if (mti->mti_flags & LDD_F_UPDATE) { CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname, mti->mti_stripe_index); /* create or update the target log and update the client/mdt logs */ rc = mgs_write_log_target(tsi->tsi_env, mgs, mti, c_fsdb); if (rc) { CERROR("Failed to write %s log (%d)\n", mti->mti_svname, rc); GOTO(out, rc); } mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE | LDD_F_NEED_INDEX | LDD_F_WRITECONF); mti->mti_flags |= LDD_F_REWRITE_LDD; } out: mgs_revoke_lock(mgs, c_fsdb, CONFIG_T_CONFIG); out_norevoke: if (!rc && mti->mti_flags & LDD_F_SV_TYPE_MDT && b_fsdb) { if (!c_fsdb) { rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, mti->mti_fsname, &c_fsdb); if (rc) CERROR("Fail to get db for %s: %d\n", mti->mti_fsname, rc); } if (c_fsdb) { memcpy(b_fsdb->fsdb_mdt_index_map, c_fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE); b_fsdb->fsdb_mdt_count = c_fsdb->fsdb_mdt_count; } } up_read(&mgs->mgs_barrier_rwsem); CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname, mti->mti_stripe_index, rc); /* An error flag is set in the mti reply rather than an error code */ if (rc) mti->mti_flags |= LDD_F_ERROR; /* send back the whole mti in the reply */ rep_mti = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO); *rep_mti = *mti; /* Flush logs to disk */ dt_sync(tsi->tsi_env, mgs->mgs_bottom); if (b_fsdb) mgs_put_fsdb(mgs, b_fsdb); if (c_fsdb) mgs_put_fsdb(mgs, c_fsdb); RETURN(rc); } /* Called whenever a target cleans up. */ static int mgs_target_del(struct tgt_session_info *tsi) { ENTRY; tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_DEL); RETURN(0); } static int mgs_config_read(struct tgt_session_info *tsi) { struct ptlrpc_request *req = tgt_ses_req(tsi); struct mgs_config_body *body; int rc; ENTRY; body = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_CONFIG_BODY); if (body == NULL) { DEBUG_REQ(D_HA, req, "no mgs_config_body"); RETURN(err_serious(-EFAULT)); } switch (body->mcb_type) { case CONFIG_T_RECOVER: rc = mgs_get_ir_logs(req); break; case CONFIG_T_NODEMAP: rc = nodemap_get_config_req(req->rq_export->exp_obd, req); break; case CONFIG_T_CONFIG: rc = -EOPNOTSUPP; break; default: rc = -EINVAL; break; } RETURN(rc); } static int mgs_llog_open(struct tgt_session_info *tsi) { struct mgs_thread_info *mgi; struct ptlrpc_request *req = tgt_ses_req(tsi); char *logname; int rc; ENTRY; rc = tgt_llog_open(tsi); if (rc) RETURN(rc); /* * For old clients there is no direct way of knowing which file system * a client is operating at the MGS side. But we need to pick up those * clients so that the MGS can mark the corresponding file system as * non-IR capable because old clients are not ready to be notified. * * Therefore we attempt to detect the file systems name by hacking the * llog operation which is currently used by the clients to fetch * configuration logs. At present this is fine because this is the * ONLY llog operation between mgc and the MGS. * * If extra llog operation are going to be added, this function needs * further work. * * When releases prior than 2.0 are not supported, the following code * can be removed. */ mgi = mgs_env_info(tsi->tsi_env); if (IS_ERR(mgi)) RETURN(PTR_ERR(mgi)); logname = req_capsule_client_get(tsi->tsi_pill, &RMF_NAME); if (logname) { char *ptr = strrchr(logname, '-'); int len = (ptr != NULL) ? (int)(ptr - logname) : 0; if (ptr == NULL || len >= sizeof(mgi->mgi_fsname)) { if (strcmp(logname, PARAMS_FILENAME) != 0) LCONSOLE_WARN("%s: non-config logname " "received: %s\n", tgt_name(tsi->tsi_tgt), logname); /* not error, this can be llog test name */ } else { strncpy(mgi->mgi_fsname, logname, len); mgi->mgi_fsname[len] = 0; rc = mgs_fsc_attach(tsi->tsi_env, tsi->tsi_exp, mgi->mgi_fsname); if (rc && rc != -EEXIST) { LCONSOLE_WARN("%s: Unable to add client %s " "to file system %s: %d\n", tgt_name(tsi->tsi_tgt), libcfs_nid2str(req->rq_peer.nid), mgi->mgi_fsname, rc); } else { rc = 0; } } } else { CERROR("%s: no logname in request\n", tgt_name(tsi->tsi_tgt)); RETURN(-EINVAL); } RETURN(rc); } static inline int mgs_init_export(struct obd_export *exp) { struct mgs_export_data *data = &exp->u.eu_mgs_data; /* init mgs_export_data for fsc */ spin_lock_init(&data->med_lock); INIT_LIST_HEAD(&data->med_clients); spin_lock(&exp->exp_lock); exp->exp_connecting = 1; spin_unlock(&exp->exp_lock); /* self-export doesn't need client data and ldlm initialization */ if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid, &exp->exp_client_uuid))) return 0; return ldlm_init_export(exp); } static inline int mgs_destroy_export(struct obd_export *exp) { ENTRY; target_destroy_export(exp); mgs_client_free(exp); if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid, &exp->exp_client_uuid))) RETURN(0); ldlm_destroy_export(exp); RETURN(0); } static int mgs_extract_fs_pool(char *arg, char *fsname, char *poolname) { size_t len; char *ptr; ENTRY; /* Validate name */ for (ptr = arg; *ptr != '\0'; ptr++) { if (!isalnum(*ptr) && *ptr != '_' && *ptr != '-' && *ptr != '.') return -EINVAL; } /* Test for fsname.poolname format. * strlen() test if poolname is empty */ ptr = strchr(arg, '.'); if (!ptr || !strlen(ptr)) return -EINVAL; ptr++; /* Also make sure poolname is not to long. */ if (strlen(ptr) > LOV_MAXPOOLNAME) return -ENAMETOOLONG; strlcpy(poolname, ptr, LOV_MAXPOOLNAME + 1); /* Test if fsname is empty */ len = strlen(arg) - strlen(ptr) - 1; if (!len) return -EINVAL; /* or too long */ if (len > LUSTRE_MAXFSNAME) return -ENAMETOOLONG; strncpy(fsname, arg, len); RETURN(0); } static int mgs_iocontrol_nodemap(const struct lu_env *env, struct mgs_device *mgs, struct obd_ioctl_data *data) { struct lustre_cfg *lcfg = NULL; struct fs_db *fsdb; lnet_nid_t nid; const char *nodemap_name = NULL; const char *nidstr = NULL; const char *client_idstr = NULL; const char *idtype_str = NULL; char *param = NULL; char fs_idstr[16]; char name_buf[LUSTRE_NODEMAP_NAME_LENGTH + 1]; int rc = 0; unsigned long client_id; __u32 fs_id; __u32 cmd; int idtype; ENTRY; if (data->ioc_type != LUSTRE_CFG_TYPE) { CERROR("%s: unknown cfg record type: %d\n", mgs->mgs_obd->obd_name, data->ioc_type); GOTO(out, rc = -EINVAL); } if (data->ioc_plen1 > PAGE_SIZE) GOTO(out, rc = -E2BIG); OBD_ALLOC(lcfg, data->ioc_plen1); if (lcfg == NULL) GOTO(out, rc = -ENOMEM); if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1)) GOTO(out_lcfg, rc = -EFAULT); cmd = lcfg->lcfg_command; switch (cmd) { case LCFG_NODEMAP_ACTIVATE: if (lcfg->lcfg_bufcount != 2) GOTO(out_lcfg, rc = -EINVAL); param = lustre_cfg_string(lcfg, 1); if (strcmp(param, "1") == 0) nodemap_activate(1); else nodemap_activate(0); break; case LCFG_NODEMAP_ADD: case LCFG_NODEMAP_DEL: if (lcfg->lcfg_bufcount != 2) GOTO(out_lcfg, rc = -EINVAL); nodemap_name = lustre_cfg_string(lcfg, 1); rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param); break; case LCFG_NODEMAP_TEST_NID: if (lcfg->lcfg_bufcount != 2) GOTO(out_lcfg, rc = -EINVAL); nidstr = lustre_cfg_string(lcfg, 1); nid = libcfs_str2nid(nidstr); nodemap_test_nid(nid, name_buf, sizeof(name_buf)); rc = copy_to_user(data->ioc_pbuf1, name_buf, min_t(size_t, data->ioc_plen1, sizeof(name_buf))); if (rc != 0) GOTO(out_lcfg, rc = -EFAULT); break; case LCFG_NODEMAP_TEST_ID: if (lcfg->lcfg_bufcount != 4) GOTO(out_lcfg, rc = -EINVAL); nidstr = lustre_cfg_string(lcfg, 1); idtype_str = lustre_cfg_string(lcfg, 2); client_idstr = lustre_cfg_string(lcfg, 3); nid = libcfs_str2nid(nidstr); if (strcmp(idtype_str, "uid") == 0) idtype = NODEMAP_UID; else idtype = NODEMAP_GID; rc = kstrtoul(client_idstr, 10, &client_id); if (rc != 0) GOTO(out_lcfg, rc = -EINVAL); rc = nodemap_test_id(nid, idtype, client_id, &fs_id); if (rc < 0) GOTO(out_lcfg, rc = -EINVAL); if (data->ioc_plen1 < sizeof(fs_idstr)) GOTO(out_lcfg, rc = -EINVAL); snprintf(fs_idstr, sizeof(fs_idstr), "%u", fs_id); if (copy_to_user(data->ioc_pbuf1, fs_idstr, sizeof(fs_idstr)) != 0) GOTO(out_lcfg, rc = -EINVAL); break; case LCFG_NODEMAP_ADD_RANGE: case LCFG_NODEMAP_DEL_RANGE: case LCFG_NODEMAP_ADD_UIDMAP: case LCFG_NODEMAP_DEL_UIDMAP: case LCFG_NODEMAP_ADD_GIDMAP: case LCFG_NODEMAP_DEL_GIDMAP: case LCFG_NODEMAP_SET_FILESET: case LCFG_NODEMAP_SET_SEPOL: if (lcfg->lcfg_bufcount != 3) GOTO(out_lcfg, rc = -EINVAL); nodemap_name = lustre_cfg_string(lcfg, 1); param = lustre_cfg_string(lcfg, 2); rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param); break; case LCFG_NODEMAP_ADMIN: case LCFG_NODEMAP_TRUSTED: case LCFG_NODEMAP_DENY_UNKNOWN: case LCFG_NODEMAP_SQUASH_UID: case LCFG_NODEMAP_SQUASH_GID: case LCFG_NODEMAP_MAP_MODE: case LCFG_NODEMAP_AUDIT_MODE: case LCFG_NODEMAP_FORBID_ENCRYPT: if (lcfg->lcfg_bufcount != 4) GOTO(out_lcfg, rc = -EINVAL); nodemap_name = lustre_cfg_string(lcfg, 1); param = lustre_cfg_string(lcfg, 3); rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param); break; default: rc = -ENOTTY; } if (rc != 0) { CERROR("%s: OBD_IOC_NODEMAP command %X for %s: rc = %d\n", mgs->mgs_obd->obd_name, lcfg->lcfg_command, nodemap_name, rc); GOTO(out_lcfg, rc); } /* revoke nodemap lock */ rc = mgs_find_or_make_fsdb(env, mgs, LUSTRE_NODEMAP_NAME, &fsdb); if (rc < 0) { CWARN("%s: cannot make nodemap fsdb: rc = %d\n", mgs->mgs_obd->obd_name, rc); } else { mgs_revoke_lock(mgs, fsdb, CONFIG_T_NODEMAP); mgs_put_fsdb(mgs, fsdb); } out_lcfg: OBD_FREE(lcfg, data->ioc_plen1); out: RETURN(rc); } static int mgs_iocontrol_pool(const struct lu_env *env, struct mgs_device *mgs, struct obd_ioctl_data *data) { struct mgs_thread_info *mgi = mgs_env_info(env); int rc; struct lustre_cfg *lcfg = NULL; char *poolname = NULL; ENTRY; OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1); if (poolname == NULL) RETURN(-ENOMEM); if (data->ioc_type != LUSTRE_CFG_TYPE) { CERROR("%s: unknown cfg record type: %d\n", mgs->mgs_obd->obd_name, data->ioc_type); GOTO(out_pool, rc = -EINVAL); } if (data->ioc_plen1 > PAGE_SIZE) GOTO(out_pool, rc = -E2BIG); OBD_ALLOC(lcfg, data->ioc_plen1); if (lcfg == NULL) GOTO(out_pool, rc = -ENOMEM); if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1)) GOTO(out_lcfg, rc = -EFAULT); if (lcfg->lcfg_bufcount < 2) GOTO(out_lcfg, rc = -EFAULT); /* first arg is always . */ rc = mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), mgi->mgi_fsname, poolname); if (rc) GOTO(out_lcfg, rc); switch (lcfg->lcfg_command) { case LCFG_POOL_NEW: if (lcfg->lcfg_bufcount != 2) GOTO(out_lcfg, rc = -EINVAL); rc = mgs_pool_cmd(env, mgs, LCFG_POOL_NEW, mgi->mgi_fsname, poolname, NULL); break; case LCFG_POOL_ADD: if (lcfg->lcfg_bufcount != 3) GOTO(out_lcfg, rc = -EINVAL); rc = mgs_pool_cmd(env, mgs, LCFG_POOL_ADD, mgi->mgi_fsname, poolname, lustre_cfg_string(lcfg, 2)); break; case LCFG_POOL_REM: if (lcfg->lcfg_bufcount != 3) GOTO(out_lcfg, rc = -EINVAL); rc = mgs_pool_cmd(env, mgs, LCFG_POOL_REM, mgi->mgi_fsname, poolname, lustre_cfg_string(lcfg, 2)); break; case LCFG_POOL_DEL: if (lcfg->lcfg_bufcount != 2) GOTO(out_lcfg, rc = -EINVAL); rc = mgs_pool_cmd(env, mgs, LCFG_POOL_DEL, mgi->mgi_fsname, poolname, NULL); break; default: rc = -EINVAL; } if (rc) { CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n", rc, lcfg->lcfg_command, mgi->mgi_fsname, poolname); GOTO(out_lcfg, rc); } out_lcfg: OBD_FREE(lcfg, data->ioc_plen1); out_pool: OBD_FREE(poolname, LOV_MAXPOOLNAME + 1); RETURN(rc); } /* from mdt_iocontrol */ static int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len, void *karg, void __user *uarg) { struct mgs_device *mgs = exp2mgs_dev(exp); struct obd_ioctl_data *data = karg; struct lu_env env; int rc = 0; ENTRY; CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd); rc = lu_env_init(&env, LCT_MG_THREAD); if (rc) RETURN(rc); switch (cmd) { case OBD_IOC_PARAM: { struct lustre_cfg *lcfg; if (data->ioc_type != LUSTRE_CFG_TYPE) { CERROR("%s: unknown cfg record type: %d\n", mgs->mgs_obd->obd_name, data->ioc_type); GOTO(out, rc = -EINVAL); } OBD_ALLOC(lcfg, data->ioc_plen1); if (lcfg == NULL) GOTO(out, rc = -ENOMEM); if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1)) GOTO(out_free, rc = -EFAULT); if (lcfg->lcfg_bufcount < 1) GOTO(out_free, rc = -EINVAL); rc = mgs_set_param(&env, mgs, lcfg); if (rc) CERROR("%s: setparam err: rc = %d\n", exp->exp_obd->obd_name, rc); out_free: OBD_FREE(lcfg, data->ioc_plen1); break; } case OBD_IOC_REPLACE_NIDS: { if (!data->ioc_inllen1 || !data->ioc_inlbuf1) { rc = -EINVAL; CERROR("%s: no device or fsname specified: rc = %d\n", exp->exp_obd->obd_name, rc); break; } if (data->ioc_inllen1 > MTI_NAME_MAXLEN) { rc = -EOVERFLOW; CERROR("%s: device or fsname is too long: rc = %d\n", exp->exp_obd->obd_name, rc); break; } if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) { rc = -EINVAL; CERROR("%s: device or fsname is not NUL terminated: " "rc = %d\n", exp->exp_obd->obd_name, rc); break; } if (!data->ioc_inllen2 || !data->ioc_inlbuf2) { rc = -EINVAL; CERROR("%s: no NIDs specified: rc = %d\n", exp->exp_obd->obd_name, rc); break; } if (data->ioc_inlbuf2[data->ioc_inllen2 - 1] != 0) { rc = -EINVAL; CERROR("%s: NID list is not NUL terminated: " "rc = %d\n", exp->exp_obd->obd_name, rc); break; } /* replace nids in llog */ rc = mgs_replace_nids(&env, mgs, data->ioc_inlbuf1, data->ioc_inlbuf2); if (rc) CERROR("%s: error replacing nids: rc = %d\n", exp->exp_obd->obd_name, rc); break; } case OBD_IOC_CLEAR_CONFIGS: { if (!data->ioc_inllen1 || !data->ioc_inlbuf1) { rc = -EINVAL; CERROR("%s: no device or fsname specified: rc = %d\n", exp->exp_obd->obd_name, rc); break; } if (data->ioc_inllen1 > MTI_NAME_MAXLEN) { rc = -EOVERFLOW; CERROR("%s: device or fsname is too long: rc = %d\n", exp->exp_obd->obd_name, rc); break; } if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) { rc = -EINVAL; CERROR("%s: device or fsname is not NUL terminated: " "rc = %d\n", exp->exp_obd->obd_name, rc); break; } /* remove records marked SKIP from config logs */ rc = mgs_clear_configs(&env, mgs, data->ioc_inlbuf1); if (rc) CERROR("%s: error clearing config log: rc = %d\n", exp->exp_obd->obd_name, rc); break; } case OBD_IOC_POOL: rc = mgs_iocontrol_pool(&env, mgs, data); break; case OBD_IOC_BARRIER: rc = mgs_iocontrol_barrier(&env, mgs, data); break; case OBD_IOC_NODEMAP: rc = mgs_iocontrol_nodemap(&env, mgs, data); break; case OBD_IOC_LCFG_FORK: rc = mgs_lcfg_fork(&env, mgs, data->ioc_inlbuf1, data->ioc_inlbuf2); break; case OBD_IOC_LCFG_ERASE: rc = mgs_lcfg_erase(&env, mgs, data->ioc_inlbuf1); break; case OBD_IOC_CATLOGLIST: rc = mgs_list_logs(&env, mgs, data); break; case OBD_IOC_LLOG_CANCEL: case OBD_IOC_LLOG_REMOVE: case OBD_IOC_LLOG_CHECK: case OBD_IOC_LLOG_INFO: case OBD_IOC_LLOG_PRINT: { struct llog_ctxt *ctxt; ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT); rc = llog_ioctl(&env, ctxt, cmd, data); llog_ctxt_put(ctxt); break; } default: CERROR("%s: unknown command %#x\n", mgs->mgs_obd->obd_name, cmd); rc = -ENOTTY; break; } out: lu_env_fini(&env); RETURN(rc); } static int mgs_connect_to_osd(struct mgs_device *m, const char *nextdev) { struct obd_connect_data *data = NULL; struct obd_device *obd; int rc; ENTRY; OBD_ALLOC_PTR(data); if (data == NULL) RETURN(-ENOMEM); obd = class_name2obd(nextdev); if (obd == NULL) { CERROR("can't locate next device: %s\n", nextdev); GOTO(out, rc = -ENOTCONN); } data->ocd_version = LUSTRE_VERSION_CODE; rc = obd_connect(NULL, &m->mgs_bottom_exp, obd, &obd->obd_uuid, data, NULL); if (rc) { CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc); GOTO(out, rc); } m->mgs_bottom = lu2dt_dev(m->mgs_bottom_exp->exp_obd->obd_lu_dev); m->mgs_dt_dev.dd_lu_dev.ld_site = m->mgs_bottom->dd_lu_dev.ld_site; LASSERT(m->mgs_dt_dev.dd_lu_dev.ld_site); out: OBD_FREE_PTR(data); RETURN(rc); } static struct tgt_handler mgs_mgs_handlers[] = { TGT_RPC_HANDLER(MGS_FIRST_OPC, 0, MGS_CONNECT, mgs_connect, &RQF_CONNECT, LUSTRE_OBD_VERSION), TGT_RPC_HANDLER(MGS_FIRST_OPC, 0, MGS_DISCONNECT, mgs_disconnect, &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION), TGT_MGS_HDL_VAR(0, MGS_EXCEPTION, mgs_exception), #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 18, 53, 0) TGT_MGS_HDL(HAS_REPLY | IS_MUTABLE, MGS_SET_INFO, mgs_set_info), #endif TGT_MGS_HDL(HAS_REPLY | IS_MUTABLE, MGS_TARGET_REG, mgs_target_reg), TGT_MGS_HDL_VAR(0, MGS_TARGET_DEL, mgs_target_del), TGT_MGS_HDL(HAS_REPLY, MGS_CONFIG_READ, mgs_config_read), }; static struct tgt_handler mgs_obd_handlers[] = { TGT_OBD_HDL(0, OBD_PING, tgt_obd_ping), }; static struct tgt_handler mgs_dlm_handlers[] = { [LDLM_ENQUEUE - LDLM_FIRST_OPC] = { .th_name = "LDLM_ENQUEUE", /* don't use th_fail_id for MGS to don't interfere with MDS tests. * * There are no tests for MGS with OBD_FAIL_LDLM_ENQUEUE_NET so it * * is safe. If such tests will be needed we have to distinguish * * MDS and MGS fail ids, e.g use OBD_FAIL_MGS_ENQUEUE_NET for MGS * * instead of common OBD_FAIL_LDLM_ENQUEUE_NET */ .th_fail_id = 0, .th_opc = LDLM_ENQUEUE, .th_flags = HAS_KEY, .th_act = tgt_enqueue, .th_fmt = &RQF_LDLM_ENQUEUE, .th_version = LUSTRE_DLM_VERSION, }, }; static struct tgt_handler mgs_llog_handlers[] = { TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, mgs_llog_open), TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block), TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header), TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block), }; static struct tgt_opc_slice mgs_common_slice[] = { { .tos_opc_start = MGS_FIRST_OPC, .tos_opc_end = MGS_LAST_OPC, .tos_hs = mgs_mgs_handlers }, { .tos_opc_start = OBD_FIRST_OPC, .tos_opc_end = OBD_LAST_OPC, .tos_hs = mgs_obd_handlers }, { .tos_opc_start = LDLM_FIRST_OPC, .tos_opc_end = LDLM_LAST_OPC, .tos_hs = mgs_dlm_handlers }, { .tos_opc_start = LLOG_FIRST_OPC, .tos_opc_end = LLOG_LAST_OPC, .tos_hs = mgs_llog_handlers }, { .tos_opc_start = SEC_FIRST_OPC, .tos_opc_end = SEC_LAST_OPC, .tos_hs = tgt_sec_ctx_handlers }, { .tos_hs = NULL } }; static int mgs_init0(const struct lu_env *env, struct mgs_device *mgs, struct lu_device_type *ldt, struct lustre_cfg *lcfg) { struct ptlrpc_service_conf conf; struct obd_device *obd; struct lustre_mount_info *lmi; struct llog_ctxt *ctxt; int rc; ENTRY; lmi = server_get_mount(lustre_cfg_string(lcfg, 0)); if (lmi == NULL) RETURN(-ENODEV); mgs->mgs_dt_dev.dd_lu_dev.ld_ops = &mgs_lu_ops; rc = mgs_connect_to_osd(mgs, lustre_cfg_string(lcfg, 3)); if (rc) GOTO(err_lmi, rc); obd = class_name2obd(lustre_cfg_string(lcfg, 0)); LASSERT(obd); mgs->mgs_obd = obd; mgs->mgs_obd->obd_lu_dev = &mgs->mgs_dt_dev.dd_lu_dev; obd->u.obt.obt_magic = OBT_MAGIC; obd->u.obt.obt_instance = 0; /* namespace for mgs llog */ obd->obd_namespace = ldlm_namespace_new(obd ,"MGS", LDLM_NAMESPACE_SERVER, LDLM_NAMESPACE_MODEST, LDLM_NS_TYPE_MGT); if (IS_ERR(obd->obd_namespace)) { rc = PTR_ERR(obd->obd_namespace); CERROR("%s: unable to create server namespace: rc = %d\n", obd->obd_name, rc); obd->obd_namespace = NULL; GOTO(err_ops, rc); } /* No recovery for MGCs */ obd->obd_replayable = 0; rc = tgt_init(env, &mgs->mgs_lut, obd, mgs->mgs_bottom, mgs_common_slice, OBD_FAIL_MGS_ALL_REQUEST_NET, OBD_FAIL_MGS_ALL_REPLY_NET); if (rc) GOTO(err_ns, rc); rc = mgs_fs_setup(env, mgs); if (rc) { CERROR("%s: MGS filesystem method init failed: rc = %d\n", obd->obd_name, rc); GOTO(err_tgt, rc); } rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT, obd, &llog_osd_ops); if (rc) GOTO(err_fs, rc); /* XXX: we need this trick till N:1 stack is supported * set "current" directory for named llogs */ ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT); LASSERT(ctxt); ctxt->loc_dir = mgs->mgs_configs_dir; llog_ctxt_put(ctxt); /* Internal mgs setup */ mgs_init_fsdb_list(mgs); mutex_init(&mgs->mgs_mutex); mgs->mgs_start_time = ktime_get_real_seconds(); spin_lock_init(&mgs->mgs_lock); mutex_init(&mgs->mgs_health_mutex); init_rwsem(&mgs->mgs_barrier_rwsem); rc = mgs_lcfg_rename(env, mgs); if (rc) GOTO(err_llog, rc); rc = lproc_mgs_setup(mgs, lustre_cfg_string(lcfg, 3)); if (rc != 0) { CERROR("%s: cannot initialize proc entry: rc = %d\n", obd->obd_name, rc); GOTO(err_llog, rc); } /* Setup params fsdb and log, so that other servers can make a local * copy successfully when they are mounted. See LU-4783 */ rc = mgs_params_fsdb_setup(env, mgs); if (rc) /* params fsdb and log can be setup later */ CERROR("%s: %s fsdb and log setup failed: rc = %d\n", obd->obd_name, PARAMS_FILENAME, rc); /* Setup _mgs fsdb, useful for srpc */ mgs__mgs_fsdb_setup(env, mgs); ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL, "mgs_ldlm_client", &obd->obd_ldlm_client); conf = (typeof(conf)) { .psc_name = LUSTRE_MGS_NAME, .psc_watchdog_factor = MGS_SERVICE_WATCHDOG_FACTOR, .psc_buf = { .bc_nbufs = MGS_NBUFS, .bc_buf_size = MGS_BUFSIZE, .bc_req_max_size = MGS_MAXREQSIZE, .bc_rep_max_size = MGS_MAXREPSIZE, .bc_req_portal = MGS_REQUEST_PORTAL, .bc_rep_portal = MGC_REPLY_PORTAL, }, .psc_thr = { .tc_thr_name = "ll_mgs", .tc_nthrs_init = MGS_NTHRS_INIT, .tc_nthrs_max = MGS_NTHRS_MAX, .tc_ctx_tags = LCT_MG_THREAD, }, .psc_ops = { .so_req_handler = tgt_request_handle, .so_req_printer = target_print_req, }, }; /* Start the service threads */ mgs->mgs_service = ptlrpc_register_service(&conf, &obd->obd_kset, obd->obd_debugfs_entry); if (IS_ERR(mgs->mgs_service)) { rc = PTR_ERR(mgs->mgs_service); CERROR("failed to start mgs service: %d\n", rc); mgs->mgs_service = NULL; GOTO(err_lproc, rc); } ping_evictor_start(); CDEBUG(D_INFO, "MGS %s started\n", obd->obd_name); /* device stack is not yet fully setup to keep no objects behind */ lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0); RETURN(0); err_lproc: mgs_params_fsdb_cleanup(env, mgs); lproc_mgs_cleanup(mgs); err_llog: ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT); if (ctxt) { ctxt->loc_dir = NULL; llog_cleanup(env, ctxt); } err_tgt: tgt_fini(env, &mgs->mgs_lut); err_fs: /* No extra cleanup needed for llog_init_commit_thread() */ mgs_fs_cleanup(env, mgs); err_ns: ldlm_namespace_free(obd->obd_namespace, NULL, 0); obd->obd_namespace = NULL; err_ops: lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0); lu_site_print(env, mgs2lu_dev(mgs)->ld_site, &mgs2lu_dev(mgs)->ld_site->ls_obj_hash.nelems, D_OTHER, lu_cdebug_printer); obd_disconnect(mgs->mgs_bottom_exp); err_lmi: if (lmi) server_put_mount(lustre_cfg_string(lcfg, 0), true); RETURN(rc); } static struct lu_device *mgs_device_free(const struct lu_env *env, struct lu_device *lu) { struct mgs_device *mgs = lu2mgs_dev(lu); ENTRY; dt_device_fini(&mgs->mgs_dt_dev); OBD_FREE_PTR(mgs); RETURN(NULL); } static int mgs_process_config(const struct lu_env *env, struct lu_device *dev, struct lustre_cfg *lcfg) { LBUG(); return 0; } static int mgs_object_init(const struct lu_env *env, struct lu_object *o, const struct lu_object_conf *unused) { struct mgs_device *d = lu2mgs_dev(o->lo_dev); struct lu_device *under; struct lu_object *below; int rc = 0; ENTRY; /* do no set .do_ops as mgs calls to bottom osd directly */ CDEBUG(D_INFO, "object init, fid = "DFID"\n", PFID(lu_object_fid(o))); under = &d->mgs_bottom->dd_lu_dev; below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under); if (below != NULL) lu_object_add(o, below); else rc = -ENOMEM; return rc; } static void mgs_object_free(const struct lu_env *env, struct lu_object *o) { struct mgs_object *obj = lu2mgs_obj(o); struct lu_object_header *h = o->lo_header; dt_object_fini(&obj->mgo_obj); lu_object_header_fini(h); OBD_FREE_PRE(obj, sizeof(*obj), "kfreed"); kfree_rcu(obj, mgo_header.loh_rcu); } static int mgs_object_print(const struct lu_env *env, void *cookie, lu_printer_t p, const struct lu_object *l) { const struct mgs_object *o = lu2mgs_obj((struct lu_object *) l); return (*p)(env, cookie, LUSTRE_MGS_NAME"-object@%p", o); } static struct lu_object_operations mgs_lu_obj_ops = { .loo_object_init = mgs_object_init, .loo_object_free = mgs_object_free, .loo_object_print = mgs_object_print, }; static struct lu_object *mgs_object_alloc(const struct lu_env *env, const struct lu_object_header *hdr, struct lu_device *d) { struct lu_object_header *h; struct mgs_object *o; struct lu_object *l; LASSERT(hdr == NULL); OBD_ALLOC_PTR(o); if (o != NULL) { l = &o->mgo_obj.do_lu; h = &o->mgo_header; lu_object_header_init(h); dt_object_init(&o->mgo_obj, h, d); lu_object_add_top(h, l); l->lo_ops = &mgs_lu_obj_ops; return l; } else { return NULL; } } const struct lu_device_operations mgs_lu_ops = { .ldo_object_alloc = mgs_object_alloc, .ldo_process_config = mgs_process_config, }; static struct lu_device *mgs_device_alloc(const struct lu_env *env, struct lu_device_type *type, struct lustre_cfg *lcfg) { struct mgs_device *mgs; struct lu_device *ludev; OBD_ALLOC_PTR(mgs); if (mgs == NULL) { ludev = ERR_PTR(-ENOMEM); } else { int rc; ludev = mgs2lu_dev(mgs); dt_device_init(&mgs->mgs_dt_dev, type); rc = mgs_init0(env, mgs, type, lcfg); if (rc != 0) { mgs_device_free(env, ludev); ludev = ERR_PTR(rc); } } return ludev; } static struct lu_device *mgs_device_fini(const struct lu_env *env, struct lu_device *d) { struct mgs_device *mgs = lu2mgs_dev(d); struct obd_device *obd = mgs->mgs_obd; struct llog_ctxt *ctxt; ENTRY; LASSERT(mgs->mgs_bottom); class_disconnect_exports(obd); ping_evictor_stop(); mutex_lock(&mgs->mgs_health_mutex); ptlrpc_unregister_service(mgs->mgs_service); mutex_unlock(&mgs->mgs_health_mutex); mgs_params_fsdb_cleanup(env, mgs); mgs_cleanup_fsdb_list(mgs); ldlm_namespace_free_prior(obd->obd_namespace, NULL, 1); obd_exports_barrier(obd); obd_zombie_barrier(); tgt_fini(env, &mgs->mgs_lut); lproc_mgs_cleanup(mgs); ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT); if (ctxt) { ctxt->loc_dir = NULL; llog_cleanup(env, ctxt); } mgs_fs_cleanup(env, mgs); ldlm_namespace_free_post(obd->obd_namespace); obd->obd_namespace = NULL; lu_site_purge(env, d->ld_site, ~0); lu_site_print(env, d->ld_site, &d->ld_site->ls_obj_hash.nelems, D_OTHER, lu_cdebug_printer); LASSERT(mgs->mgs_bottom_exp); obd_disconnect(mgs->mgs_bottom_exp); server_put_mount(obd->obd_name, true); RETURN(NULL); } /* context key constructor/destructor: mgs_key_init, mgs_key_fini */ LU_KEY_INIT_FINI(mgs, struct mgs_thread_info); LU_TYPE_INIT_FINI(mgs, &mgs_thread_key); LU_CONTEXT_KEY_DEFINE(mgs, LCT_MG_THREAD); static struct lu_device_type_operations mgs_device_type_ops = { .ldto_init = mgs_type_init, .ldto_fini = mgs_type_fini, .ldto_start = mgs_type_start, .ldto_stop = mgs_type_stop, .ldto_device_alloc = mgs_device_alloc, .ldto_device_free = mgs_device_free, .ldto_device_fini = mgs_device_fini }; static struct lu_device_type mgs_device_type = { .ldt_tags = LU_DEVICE_DT, .ldt_name = LUSTRE_MGS_NAME, .ldt_ops = &mgs_device_type_ops, .ldt_ctx_tags = LCT_MG_THREAD }; static int mgs_obd_reconnect(const struct lu_env *env, struct obd_export *exp, struct obd_device *obd, struct obd_uuid *cluuid, struct obd_connect_data *data, void *localdata) { ENTRY; if (exp == NULL || obd == NULL || cluuid == NULL) RETURN(-EINVAL); tgt_counter_incr(exp, LPROC_MGS_CONNECT); if (data != NULL) { data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED; if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2) data->ocd_connect_flags2 &= MGS_CONNECT_SUPPORTED2; exp->exp_connect_data = *data; data->ocd_version = LUSTRE_VERSION_CODE; } RETURN(mgs_export_stats_init(obd, exp, localdata)); } static int mgs_obd_connect(const struct lu_env *env, struct obd_export **exp, struct obd_device *obd, struct obd_uuid *cluuid, struct obd_connect_data *data, void *localdata) { struct obd_export *lexp; struct lustre_handle conn = { .cookie = 0, }; int rc; ENTRY; if (exp == NULL || obd == NULL || cluuid == NULL) RETURN(-EINVAL); rc = class_connect(&conn, obd, cluuid); if (rc) RETURN(rc); lexp = class_conn2export(&conn); if (lexp == NULL) RETURN(-EFAULT); rc = mgs_obd_reconnect(env, lexp, obd, cluuid, data, localdata); if (rc) GOTO(out_disconnect, rc); *exp = lexp; RETURN(rc); out_disconnect: class_disconnect(lexp); return rc; } static int mgs_obd_disconnect(struct obd_export *exp) { int rc; ENTRY; LASSERT(exp); mgs_fsc_cleanup(exp); class_export_get(exp); tgt_counter_incr(exp, LPROC_MGS_DISCONNECT); rc = server_disconnect_export(exp); class_export_put(exp); RETURN(rc); } static int mgs_health_check(const struct lu_env *env, struct obd_device *obd) { struct mgs_device *mgs = lu2mgs_dev(obd->obd_lu_dev); int rc = 0; mutex_lock(&mgs->mgs_health_mutex); rc |= ptlrpc_service_health_check(mgs->mgs_service); mutex_unlock(&mgs->mgs_health_mutex); return rc != 0 ? 1 : 0; } /* use obd ops to offer management infrastructure */ static const struct obd_ops mgs_obd_device_ops = { .o_owner = THIS_MODULE, .o_connect = mgs_obd_connect, .o_reconnect = mgs_obd_reconnect, .o_disconnect = mgs_obd_disconnect, .o_init_export = mgs_init_export, .o_destroy_export = mgs_destroy_export, .o_iocontrol = mgs_iocontrol, .o_health_check = mgs_health_check, }; static int __init mgs_init(void) { return class_register_type(&mgs_obd_device_ops, NULL, true, LUSTRE_MGS_NAME, &mgs_device_type); } static void __exit mgs_exit(void) { class_unregister_type(LUSTRE_MGS_NAME); } MODULE_AUTHOR("OpenSFS, Inc. "); MODULE_DESCRIPTION("Lustre Management Server (MGS)"); MODULE_VERSION(LUSTRE_VERSION_STRING); MODULE_LICENSE("GPL"); module_init(mgs_init); module_exit(mgs_exit);