/* * 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) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2011, 2016, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/obdclass/obd_config.c * * Config API */ #define DEBUG_SUBSYSTEM S_CLASS #include #include #include #include #include #include #include #include #include "llog_internal.h" static struct cfs_hash_ops uuid_hash_ops; static struct cfs_hash_ops nid_hash_ops; static struct cfs_hash_ops nid_stat_hash_ops; static struct cfs_hash_ops gen_hash_ops; /*********** string parsing utils *********/ /* returns 0 if we find this key in the buffer, else 1 */ int class_find_param(char *buf, char *key, char **valp) { char *ptr; if (!buf) return 1; if ((ptr = strstr(buf, key)) == NULL) return 1; if (valp) *valp = ptr + strlen(key); return 0; } EXPORT_SYMBOL(class_find_param); /** * Check whether the proc parameter \a param is an old parameter or not from * the array \a ptr which contains the mapping from old parameters to new ones. * If it's an old one, then return the pointer to the cfg_interop_param struc- * ture which contains both the old and new parameters. * * \param param proc parameter * \param ptr an array which contains the mapping from * old parameters to new ones * * \retval valid-pointer pointer to the cfg_interop_param structure * which contains the old and new parameters * \retval NULL \a param or \a ptr is NULL, * or \a param is not an old parameter */ struct cfg_interop_param *class_find_old_param(const char *param, struct cfg_interop_param *ptr) { char *value = NULL; int name_len = 0; if (param == NULL || ptr == NULL) RETURN(NULL); value = strchr(param, '='); if (value == NULL) name_len = strlen(param); else name_len = value - param; while (ptr->old_param != NULL) { if (strncmp(param, ptr->old_param, name_len) == 0 && name_len == strlen(ptr->old_param)) RETURN(ptr); ptr++; } RETURN(NULL); } EXPORT_SYMBOL(class_find_old_param); /** * Finds a parameter in \a params and copies it to \a copy. * * Leading spaces are skipped. Next space or end of string is the * parameter terminator with the exception that spaces inside single or double * quotes get included into a parameter. The parameter is copied into \a copy * which has to be allocated big enough by a caller, quotes are stripped in * the copy and the copy is terminated by 0. * * On return \a params is set to next parameter or to NULL if last * parameter is returned. * * \retval 0 if parameter is returned in \a copy * \retval 1 otherwise * \retval -EINVAL if unbalanced quota is found */ int class_get_next_param(char **params, char *copy) { char *q1, *q2, *str; int len; str = *params; while (*str == ' ') str++; if (*str == '\0') { *params = NULL; return 1; } while (1) { q1 = strpbrk(str, " '\""); if (q1 == NULL) { len = strlen(str); memcpy(copy, str, len); copy[len] = '\0'; *params = NULL; return 0; } len = q1 - str; if (*q1 == ' ') { memcpy(copy, str, len); copy[len] = '\0'; *params = str + len; return 0; } memcpy(copy, str, len); copy += len; /* search for the matching closing quote */ str = q1 + 1; q2 = strchr(str, *q1); if (q2 == NULL) { CERROR("Unbalanced quota in parameters: \"%s\"\n", *params); return -EINVAL; } len = q2 - str; memcpy(copy, str, len); copy += len; str = q2 + 1; } return 1; } EXPORT_SYMBOL(class_get_next_param); /* returns 0 if this is the first key in the buffer, else 1. valp points to first char after key. */ int class_match_param(char *buf, const char *key, char **valp) { if (!buf) return 1; if (memcmp(buf, key, strlen(key)) != 0) return 1; if (valp) *valp = buf + strlen(key); return 0; } EXPORT_SYMBOL(class_match_param); static int parse_nid(char *buf, void *value, int quiet) { lnet_nid_t *nid = (lnet_nid_t *)value; *nid = libcfs_str2nid(buf); if (*nid != LNET_NID_ANY) return 0; if (!quiet) LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf); return -EINVAL; } static int parse_net(char *buf, void *value) { __u32 *net = (__u32 *)value; *net = libcfs_str2net(buf); CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net)); return 0; } enum { CLASS_PARSE_NID = 1, CLASS_PARSE_NET, }; /* 0 is good nid, 1 not found < 0 error endh is set to next separator */ static int class_parse_value(char *buf, int opc, void *value, char **endh, int quiet) { char *endp; char tmp; int rc = 0; if (!buf) return 1; while (*buf == ',' || *buf == ':') buf++; if (*buf == ' ' || *buf == '/' || *buf == '\0') return 1; /* nid separators or end of nids */ endp = strpbrk(buf, ",: /"); if (endp == NULL) endp = buf + strlen(buf); tmp = *endp; *endp = '\0'; switch (opc) { default: LBUG(); case CLASS_PARSE_NID: rc = parse_nid(buf, value, quiet); break; case CLASS_PARSE_NET: rc = parse_net(buf, value); break; } *endp = tmp; if (rc != 0) return rc; if (endh) *endh = endp; return 0; } int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh) { return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0); } EXPORT_SYMBOL(class_parse_nid); int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh) { return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1); } EXPORT_SYMBOL(class_parse_nid_quiet); int class_parse_net(char *buf, __u32 *net, char **endh) { return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0); } /* 1 param contains key and match * 0 param contains key and not match * -1 param does not contain key */ int class_match_nid(char *buf, char *key, lnet_nid_t nid) { lnet_nid_t tmp; int rc = -1; while (class_find_param(buf, key, &buf) == 0) { /* please restrict to the nids pertaining to * the specified nids */ while (class_parse_nid(buf, &tmp, &buf) == 0) { if (tmp == nid) return 1; } rc = 0; } return rc; } int class_match_net(char *buf, char *key, __u32 net) { __u32 tmp; int rc = -1; while (class_find_param(buf, key, &buf) == 0) { /* please restrict to the nids pertaining to * the specified networks */ while (class_parse_net(buf, &tmp, &buf) == 0) { if (tmp == net) return 1; } rc = 0; } return rc; } char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index) { char *s; if (!lcfg->lcfg_buflens[index]) return NULL; s = lustre_cfg_buf(lcfg, index); if (!s) return NULL; /* * make sure it's NULL terminated, even if this kills a char * of data. Try to use the padding first though. */ if (s[lcfg->lcfg_buflens[index] - 1] != '\0') { size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1; char lost; /* Use the smaller value */ if (last > lcfg->lcfg_buflens[index]) last = lcfg->lcfg_buflens[index]; lost = s[last]; s[last] = '\0'; if (lost != '\0') { CWARN("Truncated buf %d to '%s' (lost '%c'...)\n", index, s, lost); } } return s; } EXPORT_SYMBOL(lustre_cfg_string); /********************** class fns **********************/ /** * Create a new obd device and set the type, name and uuid. If successful, * the new device can be accessed by either name or uuid. */ int class_attach(struct lustre_cfg *lcfg) { struct obd_device *obd = NULL; char *typename, *name, *uuid; int rc, len; ENTRY; if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) { CERROR("No type passed!\n"); RETURN(-EINVAL); } typename = lustre_cfg_string(lcfg, 1); if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) { CERROR("No name passed!\n"); RETURN(-EINVAL); } name = lustre_cfg_string(lcfg, 0); if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) { CERROR("No UUID passed!\n"); RETURN(-EINVAL); } uuid = lustre_cfg_string(lcfg, 2); CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n", MKSTR(typename), MKSTR(name), MKSTR(uuid)); obd = class_newdev(typename, name); if (IS_ERR(obd)) { /* Already exists or out of obds */ rc = PTR_ERR(obd); obd = NULL; CERROR("Cannot create device %s of type %s : %d\n", name, typename, rc); GOTO(out, rc); } LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n", name, typename); LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08X != %08X\n", obd, obd->obd_magic, OBD_DEVICE_MAGIC); LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n", obd, obd->obd_name, name); rwlock_init(&obd->obd_pool_lock); obd->obd_pool_limit = 0; obd->obd_pool_slv = 0; INIT_LIST_HEAD(&obd->obd_exports); INIT_LIST_HEAD(&obd->obd_unlinked_exports); INIT_LIST_HEAD(&obd->obd_delayed_exports); INIT_LIST_HEAD(&obd->obd_exports_timed); INIT_LIST_HEAD(&obd->obd_nid_stats); spin_lock_init(&obd->obd_nid_lock); spin_lock_init(&obd->obd_dev_lock); mutex_init(&obd->obd_dev_mutex); spin_lock_init(&obd->obd_osfs_lock); /* obd->obd_osfs_age must be set to a value in the distant * past to guarantee a fresh statfs is fetched on mount. */ obd->obd_osfs_age = cfs_time_shift_64(-1000); /* XXX belongs in setup not attach */ init_rwsem(&obd->obd_observer_link_sem); /* recovery data */ init_timer(&obd->obd_recovery_timer); spin_lock_init(&obd->obd_recovery_task_lock); init_waitqueue_head(&obd->obd_next_transno_waitq); init_waitqueue_head(&obd->obd_evict_inprogress_waitq); INIT_LIST_HEAD(&obd->obd_req_replay_queue); INIT_LIST_HEAD(&obd->obd_lock_replay_queue); INIT_LIST_HEAD(&obd->obd_final_req_queue); INIT_LIST_HEAD(&obd->obd_evict_list); INIT_LIST_HEAD(&obd->obd_lwp_list); llog_group_init(&obd->obd_olg); obd->obd_conn_inprogress = 0; len = strlen(uuid); if (len >= sizeof(obd->obd_uuid)) { CERROR("uuid must be < %d bytes long\n", (int)sizeof(obd->obd_uuid)); GOTO(out, rc = -EINVAL); } memcpy(obd->obd_uuid.uuid, uuid, len); /* Detach drops this */ spin_lock(&obd->obd_dev_lock); atomic_set(&obd->obd_refcount, 1); spin_unlock(&obd->obd_dev_lock); lu_ref_init(&obd->obd_reference); lu_ref_add(&obd->obd_reference, "attach", obd); obd->obd_attached = 1; CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n", obd->obd_minor, typename, atomic_read(&obd->obd_refcount)); RETURN(0); out: if (obd != NULL) { class_release_dev(obd); } return rc; } EXPORT_SYMBOL(class_attach); /** Create hashes, self-export, and call type-specific setup. * Setup is effectively the "start this obd" call. */ int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg) { int err = 0; struct obd_export *exp; ENTRY; LASSERT(obd != NULL); LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n", obd, obd->obd_minor, class_num2obd(obd->obd_minor)); LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n", obd, obd->obd_magic, OBD_DEVICE_MAGIC); /* have we attached a type to this device? */ if (!obd->obd_attached) { CERROR("Device %d not attached\n", obd->obd_minor); RETURN(-ENODEV); } if (obd->obd_set_up) { CERROR("Device %d already setup (type %s)\n", obd->obd_minor, obd->obd_type->typ_name); RETURN(-EEXIST); } /* is someone else setting us up right now? (attach inits spinlock) */ spin_lock(&obd->obd_dev_lock); if (obd->obd_starting) { spin_unlock(&obd->obd_dev_lock); CERROR("Device %d setup in progress (type %s)\n", obd->obd_minor, obd->obd_type->typ_name); RETURN(-EEXIST); } /* just leave this on forever. I can't use obd_set_up here because other fns check that status, and we're not actually set up yet. */ obd->obd_starting = 1; obd->obd_uuid_hash = NULL; obd->obd_nid_hash = NULL; obd->obd_nid_stats_hash = NULL; obd->obd_gen_hash = NULL; spin_unlock(&obd->obd_dev_lock); /* create an uuid-export lustre hash */ obd->obd_uuid_hash = cfs_hash_create("UUID_HASH", HASH_UUID_CUR_BITS, HASH_UUID_MAX_BITS, HASH_UUID_BKT_BITS, 0, CFS_HASH_MIN_THETA, CFS_HASH_MAX_THETA, &uuid_hash_ops, CFS_HASH_DEFAULT); if (!obd->obd_uuid_hash) GOTO(err_hash, err = -ENOMEM); /* create a nid-export lustre hash */ obd->obd_nid_hash = cfs_hash_create("NID_HASH", HASH_NID_CUR_BITS, HASH_NID_MAX_BITS, HASH_NID_BKT_BITS, 0, CFS_HASH_MIN_THETA, CFS_HASH_MAX_THETA, &nid_hash_ops, CFS_HASH_DEFAULT); if (!obd->obd_nid_hash) GOTO(err_hash, err = -ENOMEM); /* create a nid-stats lustre hash */ obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS", HASH_NID_STATS_CUR_BITS, HASH_NID_STATS_MAX_BITS, HASH_NID_STATS_BKT_BITS, 0, CFS_HASH_MIN_THETA, CFS_HASH_MAX_THETA, &nid_stat_hash_ops, CFS_HASH_DEFAULT); if (!obd->obd_nid_stats_hash) GOTO(err_hash, err = -ENOMEM); /* create a client_generation-export lustre hash */ obd->obd_gen_hash = cfs_hash_create("UUID_HASH", HASH_GEN_CUR_BITS, HASH_GEN_MAX_BITS, HASH_GEN_BKT_BITS, 0, CFS_HASH_MIN_THETA, CFS_HASH_MAX_THETA, &gen_hash_ops, CFS_HASH_DEFAULT); if (!obd->obd_gen_hash) GOTO(err_hash, err = -ENOMEM); exp = class_new_export(obd, &obd->obd_uuid); if (IS_ERR(exp)) GOTO(err_hash, err = PTR_ERR(exp)); obd->obd_self_export = exp; list_del_init(&exp->exp_obd_chain_timed); class_export_put(exp); err = obd_setup(obd, lcfg); if (err) GOTO(err_exp, err); obd->obd_set_up = 1; spin_lock(&obd->obd_dev_lock); /* cleanup drops this */ class_incref(obd, "setup", obd); spin_unlock(&obd->obd_dev_lock); CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n", obd->obd_name, obd->obd_uuid.uuid); RETURN(0); err_exp: if (obd->obd_self_export) { class_unlink_export(obd->obd_self_export); obd->obd_self_export = NULL; } err_hash: if (obd->obd_uuid_hash) { cfs_hash_putref(obd->obd_uuid_hash); obd->obd_uuid_hash = NULL; } if (obd->obd_nid_hash) { cfs_hash_putref(obd->obd_nid_hash); obd->obd_nid_hash = NULL; } if (obd->obd_nid_stats_hash) { cfs_hash_putref(obd->obd_nid_stats_hash); obd->obd_nid_stats_hash = NULL; } if (obd->obd_gen_hash) { cfs_hash_putref(obd->obd_gen_hash); obd->obd_gen_hash = NULL; } obd->obd_starting = 0; CERROR("setup %s failed (%d)\n", obd->obd_name, err); return err; } EXPORT_SYMBOL(class_setup); /** We have finished using this obd and are ready to destroy it. * There can be no more references to this obd. */ int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg) { ENTRY; if (obd->obd_set_up) { CERROR("OBD device %d still set up\n", obd->obd_minor); RETURN(-EBUSY); } spin_lock(&obd->obd_dev_lock); if (!obd->obd_attached) { spin_unlock(&obd->obd_dev_lock); CERROR("OBD device %d not attached\n", obd->obd_minor); RETURN(-ENODEV); } obd->obd_attached = 0; spin_unlock(&obd->obd_dev_lock); CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n", obd->obd_name, obd->obd_uuid.uuid); class_decref(obd, "attach", obd); RETURN(0); } EXPORT_SYMBOL(class_detach); /** Start shutting down the obd. There may be in-progess ops when * this is called. We tell them to start shutting down with a call * to class_disconnect_exports(). */ int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg) { int err = 0; char *flag; ENTRY; OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS); if (!obd->obd_set_up) { CERROR("Device %d not setup\n", obd->obd_minor); RETURN(-ENODEV); } spin_lock(&obd->obd_dev_lock); if (obd->obd_stopping) { spin_unlock(&obd->obd_dev_lock); CERROR("OBD %d already stopping\n", obd->obd_minor); RETURN(-ENODEV); } /* Leave this on forever */ obd->obd_stopping = 1; spin_unlock(&obd->obd_dev_lock); /* wait for already-arrived-connections to finish. */ while (obd->obd_conn_inprogress > 0) yield(); smp_rmb(); if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) { for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++) switch (*flag) { case 'F': obd->obd_force = 1; break; case 'A': LCONSOLE_WARN("Failing over %s\n", obd->obd_name); obd->obd_fail = 1; obd->obd_no_transno = 1; obd->obd_no_recov = 1; if (OBP(obd, iocontrol)) { obd_iocontrol(OBD_IOC_SYNC, obd->obd_self_export, 0, NULL, NULL); } break; default: CERROR("Unrecognised flag '%c'\n", *flag); } } LASSERT(obd->obd_self_export); /* The three references that should be remaining are the * obd_self_export and the attach and setup references. */ if (atomic_read(&obd->obd_refcount) > 3) { /* refcounf - 3 might be the number of real exports (excluding self export). But class_incref is called by other things as well, so don't count on it. */ CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n", obd->obd_name, atomic_read(&obd->obd_refcount) - 3); dump_exports(obd, 0, D_HA); class_disconnect_exports(obd); } /* Precleanup, we must make sure all exports get destroyed. */ err = obd_precleanup(obd); if (err) CERROR("Precleanup %s returned %d\n", obd->obd_name, err); /* destroy an uuid-export hash body */ if (obd->obd_uuid_hash) { cfs_hash_putref(obd->obd_uuid_hash); obd->obd_uuid_hash = NULL; } /* destroy a nid-export hash body */ if (obd->obd_nid_hash) { cfs_hash_putref(obd->obd_nid_hash); obd->obd_nid_hash = NULL; } /* destroy a nid-stats hash body */ if (obd->obd_nid_stats_hash) { cfs_hash_putref(obd->obd_nid_stats_hash); obd->obd_nid_stats_hash = NULL; } /* destroy a client_generation-export hash body */ if (obd->obd_gen_hash) { cfs_hash_putref(obd->obd_gen_hash); obd->obd_gen_hash = NULL; } class_decref(obd, "setup", obd); obd->obd_set_up = 0; RETURN(0); } struct obd_device *class_incref(struct obd_device *obd, const char *scope, const void *source) { lu_ref_add_atomic(&obd->obd_reference, scope, source); atomic_inc(&obd->obd_refcount); CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd, atomic_read(&obd->obd_refcount)); return obd; } EXPORT_SYMBOL(class_incref); void class_decref(struct obd_device *obd, const char *scope, const void *source) { int err; int refs; spin_lock(&obd->obd_dev_lock); atomic_dec(&obd->obd_refcount); refs = atomic_read(&obd->obd_refcount); spin_unlock(&obd->obd_dev_lock); lu_ref_del(&obd->obd_reference, scope, source); CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs); if ((refs == 1) && obd->obd_stopping) { /* All exports have been destroyed; there should be no more in-progress ops by this point.*/ spin_lock(&obd->obd_self_export->exp_lock); obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd); spin_unlock(&obd->obd_self_export->exp_lock); /* note that we'll recurse into class_decref again */ class_unlink_export(obd->obd_self_export); return; } if (refs == 0) { CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n", obd->obd_name, obd->obd_uuid.uuid); LASSERT(!obd->obd_attached); if (obd->obd_stopping) { /* If we're not stopping, we were never set up */ err = obd_cleanup(obd); if (err) CERROR("Cleanup %s returned %d\n", obd->obd_name, err); } class_release_dev(obd); } } EXPORT_SYMBOL(class_decref); /** Add a failover nid location. * Client obd types contact server obd types using this nid list. */ int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg) { struct obd_import *imp; struct obd_uuid uuid; int rc; ENTRY; if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 || LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) { CERROR("invalid conn_uuid\n"); RETURN(-EINVAL); } if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) && strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) && strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) && strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) && strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) { CERROR("can't add connection on non-client dev\n"); RETURN(-EINVAL); } imp = obd->u.cli.cl_import; if (!imp) { CERROR("try to add conn on immature client dev\n"); RETURN(-EINVAL); } obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1)); rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num); RETURN(rc); } /** Remove a failover nid location. */ static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg) { struct obd_import *imp; struct obd_uuid uuid; int rc; ENTRY; if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 || LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) { CERROR("invalid conn_uuid\n"); RETURN(-EINVAL); } if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) && strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) { CERROR("can't del connection on non-client dev\n"); RETURN(-EINVAL); } imp = obd->u.cli.cl_import; if (!imp) { CERROR("try to del conn on immature client dev\n"); RETURN(-EINVAL); } obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1)); rc = obd_del_conn(imp, &uuid); RETURN(rc); } static LIST_HEAD(lustre_profile_list); static DEFINE_SPINLOCK(lustre_profile_list_lock); struct lustre_profile *class_get_profile(const char * prof) { struct lustre_profile *lprof; ENTRY; spin_lock(&lustre_profile_list_lock); list_for_each_entry(lprof, &lustre_profile_list, lp_list) { if (!strcmp(lprof->lp_profile, prof)) { lprof->lp_refs++; spin_unlock(&lustre_profile_list_lock); RETURN(lprof); } } spin_unlock(&lustre_profile_list_lock); RETURN(NULL); } EXPORT_SYMBOL(class_get_profile); /** Create a named "profile". * This defines the mdc and osc names to use for a client. * This also is used to define the lov to be used by a mdt. */ static int class_add_profile(int proflen, char *prof, int osclen, char *osc, int mdclen, char *mdc) { struct lustre_profile *lprof; int err = 0; ENTRY; CDEBUG(D_CONFIG, "Add profile %s\n", prof); OBD_ALLOC(lprof, sizeof(*lprof)); if (lprof == NULL) RETURN(-ENOMEM); INIT_LIST_HEAD(&lprof->lp_list); LASSERT(proflen == (strlen(prof) + 1)); OBD_ALLOC(lprof->lp_profile, proflen); if (lprof->lp_profile == NULL) GOTO(out, err = -ENOMEM); memcpy(lprof->lp_profile, prof, proflen); LASSERT(osclen == (strlen(osc) + 1)); OBD_ALLOC(lprof->lp_dt, osclen); if (lprof->lp_dt == NULL) GOTO(out, err = -ENOMEM); memcpy(lprof->lp_dt, osc, osclen); if (mdclen > 0) { LASSERT(mdclen == (strlen(mdc) + 1)); OBD_ALLOC(lprof->lp_md, mdclen); if (lprof->lp_md == NULL) GOTO(out, err = -ENOMEM); memcpy(lprof->lp_md, mdc, mdclen); } spin_lock(&lustre_profile_list_lock); lprof->lp_refs = 1; lprof->lp_list_deleted = false; list_add(&lprof->lp_list, &lustre_profile_list); spin_unlock(&lustre_profile_list_lock); RETURN(err); out: if (lprof->lp_md) OBD_FREE(lprof->lp_md, mdclen); if (lprof->lp_dt) OBD_FREE(lprof->lp_dt, osclen); if (lprof->lp_profile) OBD_FREE(lprof->lp_profile, proflen); OBD_FREE(lprof, sizeof(*lprof)); RETURN(err); } void class_del_profile(const char *prof) { struct lustre_profile *lprof; ENTRY; CDEBUG(D_CONFIG, "Del profile %s\n", prof); lprof = class_get_profile(prof); if (lprof) { spin_lock(&lustre_profile_list_lock); /* because get profile increments the ref counter */ lprof->lp_refs--; list_del(&lprof->lp_list); lprof->lp_list_deleted = true; spin_unlock(&lustre_profile_list_lock); class_put_profile(lprof); } EXIT; } EXPORT_SYMBOL(class_del_profile); void class_put_profile(struct lustre_profile *lprof) { spin_lock(&lustre_profile_list_lock); if ((--lprof->lp_refs) > 0) { LASSERT(lprof->lp_refs > 0); spin_unlock(&lustre_profile_list_lock); return; } spin_unlock(&lustre_profile_list_lock); /* confirm not a negative number */ LASSERT(lprof->lp_refs == 0); /* At least one class_del_profile/profiles must be called * on the target profile or lustre_profile_list will corrupt */ LASSERT(lprof->lp_list_deleted); OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1); OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1); if (lprof->lp_md != NULL) OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1); OBD_FREE(lprof, sizeof(*lprof)); } EXPORT_SYMBOL(class_put_profile); /* COMPAT_146 */ void class_del_profiles(void) { struct lustre_profile *lprof, *n; ENTRY; spin_lock(&lustre_profile_list_lock); list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) { list_del(&lprof->lp_list); lprof->lp_list_deleted = true; spin_unlock(&lustre_profile_list_lock); class_put_profile(lprof); spin_lock(&lustre_profile_list_lock); } spin_unlock(&lustre_profile_list_lock); EXIT; } EXPORT_SYMBOL(class_del_profiles); static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg) { ENTRY; if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0) at_min = val; else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0) at_max = val; else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0) at_extra = val; else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0) at_early_margin = val; else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0) at_history = val; else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0) strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2), JOBSTATS_JOBID_VAR_MAX_LEN + 1); else RETURN(-EINVAL); CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val); RETURN(0); } /* We can't call ll_process_config or lquota_process_config directly because * it lives in a module that must be loaded after this one. */ static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL; static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL; void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg)) { client_process_config = cpc; } EXPORT_SYMBOL(lustre_register_client_process_config); /** * Rename the proc parameter in \a cfg with a new name \a new_name. * * \param cfg config structure which contains the proc parameter * \param new_name new name of the proc parameter * * \retval valid-pointer pointer to the newly-allocated config structure * which contains the renamed proc parameter * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does * not contain a proc parameter * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs */ struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg, const char *new_name) { struct lustre_cfg_bufs *bufs = NULL; struct lustre_cfg *new_cfg = NULL; char *param = NULL; char *new_param = NULL; char *value = NULL; int name_len = 0; int new_len = 0; ENTRY; if (!cfg || !new_name) GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL)); param = lustre_cfg_string(cfg, 1); if (!param) GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL)); value = strchr(param, '='); if (value == NULL) name_len = strlen(param); else name_len = value - param; new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len; OBD_ALLOC(new_param, new_len); if (!new_param) GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM)); strcpy(new_param, new_name); if (value != NULL) strcat(new_param, value); OBD_ALLOC_PTR(bufs); if (!bufs) GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM)); lustre_cfg_bufs_reset(bufs, NULL); lustre_cfg_bufs_init(bufs, cfg); lustre_cfg_bufs_set_string(bufs, 1, new_param); OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen)); if (!new_cfg) GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM)); lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs); new_cfg->lcfg_num = cfg->lcfg_num; new_cfg->lcfg_flags = cfg->lcfg_flags; new_cfg->lcfg_nid = cfg->lcfg_nid; new_cfg->lcfg_nal = cfg->lcfg_nal; out_free_buf: OBD_FREE_PTR(bufs); out_free_param: OBD_FREE(new_param, new_len); out_nocfg: RETURN(new_cfg); } EXPORT_SYMBOL(lustre_cfg_rename); static int process_param2_config(struct lustre_cfg *lcfg) { char *param = lustre_cfg_string(lcfg, 1); char *upcall = lustre_cfg_string(lcfg, 2); char *argv[] = { [0] = "/usr/sbin/lctl", [1] = "set_param", [2] = param, [3] = NULL }; ktime_t start; ktime_t end; int rc; ENTRY; /* Add upcall processing here. Now only lctl is supported */ if (strcmp(upcall, LCTL_UPCALL) != 0) { CERROR("Unsupported upcall %s\n", upcall); RETURN(-EINVAL); } start = ktime_get(); rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC); end = ktime_get(); if (rc < 0) { CERROR("lctl: error invoking upcall %s %s %s: rc = %d; " "time %ldus\n", argv[0], argv[1], argv[2], rc, (long)ktime_us_delta(end, start)); } else { CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n", argv[0], argv[1], argv[2], (long)ktime_us_delta(end, start)); rc = 0; } RETURN(rc); } void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg)) { quota_process_config = qpc; } EXPORT_SYMBOL(lustre_register_quota_process_config); /** Process configuration commands given in lustre_cfg form. * These may come from direct calls (e.g. class_manual_cleanup) * or processing the config llog, or ioctl from lctl. */ int class_process_config(struct lustre_cfg *lcfg) { struct obd_device *obd; int err; LASSERT(lcfg && !IS_ERR(lcfg)); CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command); /* Commands that don't need a device */ switch(lcfg->lcfg_command) { case LCFG_ATTACH: { err = class_attach(lcfg); GOTO(out, err); } case LCFG_ADD_UUID: { CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid %#llx" " (%s)\n", lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid)); err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid); GOTO(out, err); } case LCFG_DEL_UUID: { CDEBUG(D_IOCTL, "removing mappings for uuid %s\n", (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0) ? "" : lustre_cfg_string(lcfg, 1)); err = class_del_uuid(lustre_cfg_string(lcfg, 1)); GOTO(out, err); } case LCFG_MOUNTOPT: { CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n", lustre_cfg_string(lcfg, 1), lustre_cfg_string(lcfg, 2), lustre_cfg_string(lcfg, 3)); /* set these mount options somewhere, so ll_fill_super * can find them. */ err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1), lustre_cfg_string(lcfg, 1), LUSTRE_CFG_BUFLEN(lcfg, 2), lustre_cfg_string(lcfg, 2), LUSTRE_CFG_BUFLEN(lcfg, 3), lustre_cfg_string(lcfg, 3)); GOTO(out, err); } case LCFG_DEL_MOUNTOPT: { CDEBUG(D_IOCTL, "mountopt: profile %s\n", lustre_cfg_string(lcfg, 1)); class_del_profile(lustre_cfg_string(lcfg, 1)); GOTO(out, err = 0); } case LCFG_SET_TIMEOUT: { CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n", obd_timeout, lcfg->lcfg_num); obd_timeout = max(lcfg->lcfg_num, 1U); obd_timeout_set = 1; GOTO(out, err = 0); } case LCFG_SET_LDLM_TIMEOUT: { CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n", ldlm_timeout, lcfg->lcfg_num); ldlm_timeout = max(lcfg->lcfg_num, 1U); if (ldlm_timeout >= obd_timeout) ldlm_timeout = max(obd_timeout / 3, 1U); ldlm_timeout_set = 1; GOTO(out, err = 0); } case LCFG_SET_UPCALL: { LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n"); /* COMPAT_146 Don't fail on old configs */ GOTO(out, err = 0); } case LCFG_MARKER: { struct cfg_marker *marker; marker = lustre_cfg_buf(lcfg, 1); CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step, marker->cm_flags, marker->cm_tgtname, marker->cm_comment); GOTO(out, err = 0); } case LCFG_PARAM: { char *tmp; /* llite has no obd */ if ((class_match_param(lustre_cfg_string(lcfg, 1), PARAM_LLITE, NULL) == 0) && client_process_config) { err = (*client_process_config)(lcfg); GOTO(out, err); } else if ((class_match_param(lustre_cfg_string(lcfg, 1), PARAM_SYS, &tmp) == 0)) { /* Global param settings */ err = class_set_global(tmp, lcfg->lcfg_num, lcfg); /* * Client or server should not fail to mount if * it hits an unknown configuration parameter. */ if (err != 0) CWARN("Ignoring unknown param %s\n", tmp); GOTO(out, err = 0); } else if ((class_match_param(lustre_cfg_string(lcfg, 1), PARAM_QUOTA, &tmp) == 0) && quota_process_config) { err = (*quota_process_config)(lcfg); GOTO(out, err); } break; } case LCFG_SET_PARAM: { err = process_param2_config(lcfg); GOTO(out, err = 0); } } /* Commands that require a device */ obd = class_name2obd(lustre_cfg_string(lcfg, 0)); if (obd == NULL) { if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) CERROR("this lcfg command requires a device name\n"); else CERROR("no device for: %s\n", lustre_cfg_string(lcfg, 0)); GOTO(out, err = -EINVAL); } switch(lcfg->lcfg_command) { case LCFG_SETUP: { err = class_setup(obd, lcfg); GOTO(out, err); } case LCFG_DETACH: { err = class_detach(obd, lcfg); GOTO(out, err = 0); } case LCFG_CLEANUP: { err = class_cleanup(obd, lcfg); GOTO(out, err = 0); } case LCFG_ADD_CONN: { err = class_add_conn(obd, lcfg); GOTO(out, err = 0); } case LCFG_DEL_CONN: { err = class_del_conn(obd, lcfg); GOTO(out, err = 0); } case LCFG_POOL_NEW: { err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2)); GOTO(out, err = 0); } case LCFG_POOL_ADD: { err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2), lustre_cfg_string(lcfg, 3)); GOTO(out, err = 0); } case LCFG_POOL_REM: { err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2), lustre_cfg_string(lcfg, 3)); GOTO(out, err = 0); } case LCFG_POOL_DEL: { err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2)); GOTO(out, err = 0); } default: { err = obd_process_config(obd, sizeof(*lcfg), lcfg); GOTO(out, err); } } out: if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) { CWARN("Ignoring error %d on optional command %#x\n", err, lcfg->lcfg_command); err = 0; } return err; } EXPORT_SYMBOL(class_process_config); int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars, struct lustre_cfg *lcfg, void *data) { struct lprocfs_vars *var; struct file fakefile; struct seq_file fake_seqfile; char *key, *sval; int i, keylen, vallen; int matched = 0, j = 0; int rc = 0; int skip = 0; ENTRY; if (lcfg->lcfg_command != LCFG_PARAM) { CERROR("Unknown command: %d\n", lcfg->lcfg_command); RETURN(-EINVAL); } /* fake a seq file so that var->fops->write can work... */ fakefile.private_data = &fake_seqfile; fake_seqfile.private = data; /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */ for (i = 1; i < lcfg->lcfg_bufcount; i++) { key = lustre_cfg_buf(lcfg, i); /* Strip off prefix */ if (class_match_param(key, prefix, &key)) /* If the prefix doesn't match, return error so we * can pass it down the stack */ RETURN(-ENOSYS); sval = strchr(key, '='); if (!sval || *(sval + 1) == 0) { CERROR("%s: can't parse param '%s' (missing '=')\n", lustre_cfg_string(lcfg, 0), lustre_cfg_string(lcfg, i)); /* rc = -EINVAL; continue parsing other params */ continue; } keylen = sval - key; sval++; vallen = strlen(sval); matched = 0; j = 0; /* Search proc entries */ while (lvars[j].name) { var = &lvars[j]; if (class_match_param(key, var->name, NULL) == 0 && keylen == strlen(var->name)) { matched++; rc = -EROFS; if (var->fops && var->fops->write) { mm_segment_t oldfs; oldfs = get_fs(); set_fs(KERNEL_DS); rc = (var->fops->write)(&fakefile, sval, vallen, NULL); set_fs(oldfs); } break; } j++; } if (!matched) { /* It was upgraded from old MDT/OST device, * ignore the obsolete "sec_level" parameter. */ if (strncmp("sec_level", key, keylen) == 0) continue; CERROR("%s: unknown config parameter '%s'\n", lustre_cfg_string(lcfg, 0), lustre_cfg_string(lcfg, i)); /* rc = -EINVAL; continue parsing other params */ skip++; } else if (rc < 0) { CERROR("%s: error writing proc '%s'='%s': rc = %d\n", lustre_cfg_string(lcfg, 0), key, sval, rc); rc = 0; } else { CDEBUG(D_CONFIG, "%s: Set parameter '%s'='%s'\n", lustre_cfg_string(lcfg, 0), key, sval); } } if (rc > 0) rc = 0; if (!rc && skip) rc = skip; RETURN(rc); } EXPORT_SYMBOL(class_process_proc_param); /* * Supplemental functions for config logs, it allocates lustre_cfg * buffers plus initialized llog record header at the beginning. */ struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs) { struct llog_cfg_rec *lcr; int reclen; ENTRY; reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen); reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) + sizeof(struct llog_rec_tail); OBD_ALLOC(lcr, reclen); if (lcr == NULL) RETURN(NULL); lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs); lcr->lcr_hdr.lrh_len = reclen; lcr->lcr_hdr.lrh_type = OBD_CFG_REC; RETURN(lcr); } EXPORT_SYMBOL(lustre_cfg_rec_new); void lustre_cfg_rec_free(struct llog_cfg_rec *lcr) { ENTRY; OBD_FREE(lcr, lcr->lcr_hdr.lrh_len); EXIT; } EXPORT_SYMBOL(lustre_cfg_rec_free); /** Parse a configuration llog, doing various manipulations on them * for various reasons, (modifications for compatibility, skip obsolete * records, change uuids, etc), then class_process_config() resulting * net records. */ int class_config_llog_handler(const struct lu_env *env, struct llog_handle *handle, struct llog_rec_hdr *rec, void *data) { struct config_llog_instance *cfg = data; int cfg_len = rec->lrh_len; char *cfg_buf = (char *) (rec + 1); int rc = 0; ENTRY; /* class_config_dump_handler(handle, rec, data); */ switch (rec->lrh_type) { case OBD_CFG_REC: { struct lustre_cfg *lcfg, *lcfg_new; struct lustre_cfg_bufs bufs; char *inst_name = NULL; int inst_len = 0; int swab = 0; lcfg = (struct lustre_cfg *)cfg_buf; if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) { lustre_swab_lustre_cfg(lcfg); swab = 1; } rc = lustre_cfg_sanity_check(cfg_buf, cfg_len); if (rc) GOTO(out, rc); /* Figure out config state info */ if (lcfg->lcfg_command == LCFG_MARKER) { struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1); lustre_swab_cfg_marker(marker, swab, LUSTRE_CFG_BUFLEN(lcfg, 1)); CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n", cfg->cfg_flags, marker->cm_flags); if (marker->cm_flags & CM_START) { /* all previous flags off */ cfg->cfg_flags = CFG_F_MARKER; server_name2index(marker->cm_tgtname, &cfg->cfg_lwp_idx, NULL); if (marker->cm_flags & CM_SKIP) { cfg->cfg_flags |= CFG_F_SKIP; CDEBUG(D_CONFIG, "SKIP #%d\n", marker->cm_step); } else if ((marker->cm_flags & CM_EXCLUDE) || (cfg->cfg_sb && lustre_check_exclusion(cfg->cfg_sb, marker->cm_tgtname))) { cfg->cfg_flags |= CFG_F_EXCLUDE; CDEBUG(D_CONFIG, "EXCLUDE %d\n", marker->cm_step); } } else if (marker->cm_flags & CM_END) { cfg->cfg_flags = 0; } } /* A config command without a start marker before it is illegal (post 146) */ if (!(cfg->cfg_flags & CFG_F_COMPAT146) && !(cfg->cfg_flags & CFG_F_MARKER) && (lcfg->lcfg_command != LCFG_MARKER)) { CWARN("Config not inside markers, ignoring! " "(inst: %p, uuid: %s, flags: %#x)\n", cfg->cfg_instance, cfg->cfg_uuid.uuid, cfg->cfg_flags); cfg->cfg_flags |= CFG_F_SKIP; } if (cfg->cfg_flags & CFG_F_SKIP) { CDEBUG(D_CONFIG, "skipping %#x\n", cfg->cfg_flags); rc = 0; /* No processing! */ break; } /* * For interoperability between 1.8 and 2.0, * rename "mds" obd device type to "mdt". */ { char *typename = lustre_cfg_string(lcfg, 1); char *index = lustre_cfg_string(lcfg, 2); if ((lcfg->lcfg_command == LCFG_ATTACH && typename && strcmp(typename, "mds") == 0)) { CWARN("For 1.8 interoperability, rename obd " "type from mds to mdt\n"); typename[2] = 't'; } if ((lcfg->lcfg_command == LCFG_SETUP && index && strcmp(index, "type") == 0)) { CDEBUG(D_INFO, "For 1.8 interoperability, " "set this index to '0'\n"); index[0] = '0'; index[1] = 0; } } #ifdef HAVE_SERVER_SUPPORT /* newer MDS replaces LOV/OSC with LOD/OSP */ { char *typename = lustre_cfg_string(lcfg, 1); if ((lcfg->lcfg_command == LCFG_ATTACH && typename && strcmp(typename, LUSTRE_LOV_NAME) == 0) && cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) { CDEBUG(D_CONFIG, "For 2.x interoperability, rename obd " "type from lov to lod (%s)\n", s2lsi(cfg->cfg_sb)->lsi_svname); strcpy(typename, LUSTRE_LOD_NAME); } if ((lcfg->lcfg_command == LCFG_ATTACH && typename && strcmp(typename, LUSTRE_OSC_NAME) == 0) && cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) { CDEBUG(D_CONFIG, "For 2.x interoperability, rename obd " "type from osc to osp (%s)\n", s2lsi(cfg->cfg_sb)->lsi_svname); strcpy(typename, LUSTRE_OSP_NAME); } } #endif /* HAVE_SERVER_SUPPORT */ if (cfg->cfg_flags & CFG_F_EXCLUDE) { CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n", lcfg->lcfg_command); if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD) /* Add inactive instead */ lcfg->lcfg_command = LCFG_LOV_ADD_INA; } lustre_cfg_bufs_reset(&bufs, NULL); lustre_cfg_bufs_init(&bufs, lcfg); if (cfg->cfg_instance && LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) { inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) + sizeof(cfg->cfg_instance) * 2 + 4; OBD_ALLOC(inst_name, inst_len); if (inst_name == NULL) GOTO(out, rc = -ENOMEM); snprintf(inst_name, inst_len, "%s-%p", lustre_cfg_string(lcfg, 0), cfg->cfg_instance); lustre_cfg_bufs_set_string(&bufs, 0, inst_name); CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n", lcfg->lcfg_command, inst_name); } /* we override the llog's uuid for clients, to insure they are unique */ if (cfg->cfg_instance != NULL && lcfg->lcfg_command == LCFG_ATTACH) { lustre_cfg_bufs_set_string(&bufs, 2, cfg->cfg_uuid.uuid); } /* * sptlrpc config record, we expect 2 data segments: * [0]: fs_name/target_name, * [1]: rule string * moving them to index [1] and [2], and insert MGC's * obdname at index [0]. */ if (cfg->cfg_instance != NULL && lcfg->lcfg_command == LCFG_SPTLRPC_CONF) { lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1], bufs.lcfg_buflen[1]); lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0], bufs.lcfg_buflen[0]); lustre_cfg_bufs_set_string(&bufs, 0, cfg->cfg_obdname); } /* Add net info to setup command * if given on command line. * So config log will be: * [0]: client name * [1]: client UUID * [2]: server UUID * [3]: inactive-on-startup * [4]: restrictive net */ if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) && !IS_SERVER(s2lsi(cfg->cfg_sb))) { struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb); char *nidnet = lsi->lsi_lmd->lmd_nidnet; if (lcfg->lcfg_command == LCFG_SETUP && lcfg->lcfg_bufcount != 2 && nidnet) { CDEBUG(D_CONFIG, "Adding net %s info to setup " "command for client %s\n", nidnet, lustre_cfg_string(lcfg, 0)); lustre_cfg_bufs_set_string(&bufs, 4, nidnet); } } /* Skip add_conn command if uuid is * not on restricted net */ if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) && !IS_SERVER(s2lsi(cfg->cfg_sb))) { struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb); char *uuid_str = lustre_cfg_string(lcfg, 1); if (lcfg->lcfg_command == LCFG_ADD_CONN && lsi->lsi_lmd->lmd_nidnet && LNET_NIDNET(libcfs_str2nid(uuid_str)) != libcfs_str2net(lsi->lsi_lmd->lmd_nidnet)) { CDEBUG(D_CONFIG, "skipping add_conn for %s\n", uuid_str); rc = 0; /* No processing! */ break; } } OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen)); if (!lcfg_new) GOTO(out, rc = -ENOMEM); lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs); lcfg_new->lcfg_num = lcfg->lcfg_num; lcfg_new->lcfg_flags = lcfg->lcfg_flags; /* XXX Hack to try to remain binary compatible with * pre-newconfig logs */ if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */ (lcfg->lcfg_nid >> 32) == 0) { __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff); lcfg_new->lcfg_nid = LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr); CWARN("Converted pre-newconfig NAL %d NID %x to %s\n", lcfg->lcfg_nal, addr, libcfs_nid2str(lcfg_new->lcfg_nid)); } else { lcfg_new->lcfg_nid = lcfg->lcfg_nid; } lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */ rc = class_process_config(lcfg_new); OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount, lcfg_new->lcfg_buflens)); if (inst_name) OBD_FREE(inst_name, inst_len); break; } default: CERROR("Unknown llog record type %#x encountered\n", rec->lrh_type); break; } out: if (rc) { CERROR("%s: cfg command failed: rc = %d\n", handle->lgh_ctxt->loc_obd->obd_name, rc); class_config_dump_handler(NULL, handle, rec, data); } RETURN(rc); } EXPORT_SYMBOL(class_config_llog_handler); int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt, char *name, struct config_llog_instance *cfg) { struct llog_process_cat_data cd = { .lpcd_first_idx = 0, }; struct llog_handle *llh; llog_cb_t callback; int rc; ENTRY; CDEBUG(D_INFO, "looking up llog %s\n", name); rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS); if (rc) RETURN(rc); rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL); if (rc) GOTO(parse_out, rc); /* continue processing from where we last stopped to end-of-log */ if (cfg) { cd.lpcd_first_idx = cfg->cfg_last_idx; callback = cfg->cfg_callback; LASSERT(callback != NULL); } else { callback = class_config_llog_handler; } cd.lpcd_last_idx = 0; rc = llog_process(env, llh, callback, cfg, &cd); CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name, cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc); if (cfg) cfg->cfg_last_idx = cd.lpcd_last_idx; parse_out: llog_close(env, llh); RETURN(rc); } EXPORT_SYMBOL(class_config_parse_llog); static struct lcfg_type_data { __u32 ltd_type; char *ltd_name; char *ltd_bufs[4]; } lcfg_data_table[] = { { LCFG_ATTACH, "attach", { "type", "UUID", "3", "4" } }, { LCFG_DETACH, "detach", { "1", "2", "3", "4" } }, { LCFG_SETUP, "setup", { "UUID", "node", "options", "failout" } }, { LCFG_CLEANUP, "cleanup", { "1", "2", "3", "4" } }, { LCFG_ADD_UUID, "add_uuid", { "node", "2", "3", "4" } }, { LCFG_DEL_UUID, "del_uuid", { "1", "2", "3", "4" } }, { LCFG_MOUNTOPT, "new_profile", { "name", "lov", "lmv", "4" } }, { LCFG_DEL_MOUNTOPT, "del_mountopt", { "1", "2", "3", "4" } , }, { LCFG_SET_TIMEOUT, "set_timeout", { "parameter", "2", "3", "4" } }, { LCFG_SET_UPCALL, "set_upcall", { "1", "2", "3", "4" } }, { LCFG_ADD_CONN, "add_conn", { "node", "2", "3", "4" } }, { LCFG_DEL_CONN, "del_conn", { "1", "2", "3", "4" } }, { LCFG_LOV_ADD_OBD, "add_osc", { "ost", "index", "gen", "UUID" } }, { LCFG_LOV_DEL_OBD, "del_osc", { "1", "2", "3", "4" } }, { LCFG_PARAM, "set_param", { "parameter", "value", "3", "4" } }, { LCFG_MARKER, "marker", { "1", "2", "3", "4" } }, { LCFG_LOG_START, "log_start", { "1", "2", "3", "4" } }, { LCFG_LOG_END, "log_end", { "1", "2", "3", "4" } }, { LCFG_LOV_ADD_INA, "add_osc_inactive", { "1", "2", "3", "4" } }, { LCFG_ADD_MDC, "add_mdc", { "mdt", "index", "gen", "UUID" } }, { LCFG_DEL_MDC, "del_mdc", { "1", "2", "3", "4" } }, { LCFG_SPTLRPC_CONF, "security", { "parameter", "2", "3", "4" } }, { LCFG_POOL_NEW, "new_pool", { "fsname", "pool", "3", "4" } }, { LCFG_POOL_ADD, "add_pool", { "fsname", "pool", "ost", "4" } }, { LCFG_POOL_REM, "remove_pool", { "fsname", "pool", "ost", "4" } }, { LCFG_POOL_DEL, "del_pool", { "fsname", "pool", "3", "4" } }, { LCFG_SET_LDLM_TIMEOUT, "set_ldlm_timeout", { "parameter", "2", "3", "4" } }, { 0, NULL, { NULL, NULL, NULL, NULL } } }; static struct lcfg_type_data *lcfg_cmd2data(__u32 cmd) { int i = 0; while (lcfg_data_table[i].ltd_type != 0) { if (lcfg_data_table[i].ltd_type == cmd) return &lcfg_data_table[i]; i++; } return NULL; } /** * Parse config record and output dump in supplied buffer. * * This is separated from class_config_dump_handler() to use * for ioctl needs as well * * Sample Output: * - { index: 4, event: attach, device: lustrewt-clilov, type: lov, * UUID: lustrewt-clilov_UUID } */ int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size) { struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1); char *ptr = buf; char *end = buf + size; int rc = 0, i; struct lcfg_type_data *ldata; LASSERT(rec->lrh_type == OBD_CFG_REC); rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len); if (rc < 0) return rc; ldata = lcfg_cmd2data(lcfg->lcfg_command); if (ldata == NULL) return -ENOTTY; if (lcfg->lcfg_command == LCFG_MARKER) return 0; /* form YAML entity */ ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s", rec->lrh_index, ldata->ltd_name); if (lcfg->lcfg_flags) ptr += snprintf(ptr, end - ptr, ", flags: %#08x", lcfg->lcfg_flags); if (lcfg->lcfg_num) ptr += snprintf(ptr, end - ptr, ", num: %#08x", lcfg->lcfg_num); if (lcfg->lcfg_nid) { char nidstr[LNET_NIDSTR_SIZE]; libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr)); ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)", nidstr, lcfg->lcfg_nid); } if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) ptr += snprintf(ptr, end - ptr, ", device: %s", lustre_cfg_string(lcfg, 0)); for (i = 1; i < lcfg->lcfg_bufcount; i++) { if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) ptr += snprintf(ptr, end - ptr, ", %s: %s", ldata->ltd_bufs[i - 1], lustre_cfg_string(lcfg, i)); } ptr += snprintf(ptr, end - ptr, " }\n"); /* return consumed bytes */ rc = ptr - buf; return rc; } /** * parse config record and output dump in supplied buffer. * This is separated from class_config_dump_handler() to use * for ioctl needs as well */ static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size) { struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1); char *ptr = buf; char *end = buf + size; int rc = 0; ENTRY; LASSERT(rec->lrh_type == OBD_CFG_REC); rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len); if (rc < 0) RETURN(rc); ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command); if (lcfg->lcfg_flags) ptr += snprintf(ptr, end-ptr, "flags=%#08x ", lcfg->lcfg_flags); if (lcfg->lcfg_num) ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num); if (lcfg->lcfg_nid) { char nidstr[LNET_NIDSTR_SIZE]; libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr)); ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx)\n ", nidstr, lcfg->lcfg_nid); } if (lcfg->lcfg_command == LCFG_MARKER) { struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1); ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'", marker->cm_step, marker->cm_flags, marker->cm_tgtname, marker->cm_comment); } else { int i; for (i = 0; i < lcfg->lcfg_bufcount; i++) { ptr += snprintf(ptr, end-ptr, "%d:%s ", i, lustre_cfg_string(lcfg, i)); } } ptr += snprintf(ptr, end - ptr, "\n"); /* return consumed bytes */ rc = ptr - buf; RETURN(rc); } int class_config_dump_handler(const struct lu_env *env, struct llog_handle *handle, struct llog_rec_hdr *rec, void *data) { char *outstr; int rc = 0; ENTRY; OBD_ALLOC(outstr, 256); if (outstr == NULL) RETURN(-ENOMEM); if (rec->lrh_type == OBD_CFG_REC) { class_config_parse_rec(rec, outstr, 256); LCONSOLE(D_WARNING, " %s\n", outstr); } else { LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type); rc = -EINVAL; } OBD_FREE(outstr, 256); RETURN(rc); } /** Call class_cleanup and class_detach. * "Manual" only in the sense that we're faking lcfg commands. */ int class_manual_cleanup(struct obd_device *obd) { char flags[3] = ""; struct lustre_cfg *lcfg; struct lustre_cfg_bufs bufs; int rc; ENTRY; if (!obd) { CERROR("empty cleanup\n"); RETURN(-EALREADY); } if (obd->obd_force) strcat(flags, "F"); if (obd->obd_fail) strcat(flags, "A"); CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n", obd->obd_name, flags); lustre_cfg_bufs_reset(&bufs, obd->obd_name); lustre_cfg_bufs_set_string(&bufs, 1, flags); OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen)); if (!lcfg) RETURN(-ENOMEM); lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs); rc = class_process_config(lcfg); if (rc) { CERROR("cleanup failed %d: %s\n", rc, obd->obd_name); GOTO(out, rc); } /* the lcfg is almost the same for both ops */ lcfg->lcfg_command = LCFG_DETACH; rc = class_process_config(lcfg); if (rc) CERROR("detach failed %d: %s\n", rc, obd->obd_name); out: OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens)); RETURN(rc); } EXPORT_SYMBOL(class_manual_cleanup); /* * uuid<->export lustre hash operations */ static unsigned uuid_hash(struct cfs_hash *hs, const void *key, unsigned mask) { return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid, sizeof(((struct obd_uuid *)key)->uuid), mask); } static void * uuid_key(struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); return &exp->exp_client_uuid; } /* * NOTE: It is impossible to find an export that is in failed * state with this function */ static int uuid_keycmp(const void *key, struct hlist_node *hnode) { struct obd_export *exp; LASSERT(key); exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); return obd_uuid_equals(key, &exp->exp_client_uuid) && !exp->exp_failed; } static void * uuid_export_object(struct hlist_node *hnode) { return hlist_entry(hnode, struct obd_export, exp_uuid_hash); } static void uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); class_export_get(exp); } static void uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); class_export_put(exp); } static struct cfs_hash_ops uuid_hash_ops = { .hs_hash = uuid_hash, .hs_key = uuid_key, .hs_keycmp = uuid_keycmp, .hs_object = uuid_export_object, .hs_get = uuid_export_get, .hs_put_locked = uuid_export_put_locked, }; /* * nid<->export hash operations */ static unsigned nid_hash(struct cfs_hash *hs, const void *key, unsigned mask) { return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask); } static void * nid_key(struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_nid_hash); RETURN(&exp->exp_connection->c_peer.nid); } /* * NOTE: It is impossible to find an export that is in failed * state with this function */ static int nid_kepcmp(const void *key, struct hlist_node *hnode) { struct obd_export *exp; LASSERT(key); exp = hlist_entry(hnode, struct obd_export, exp_nid_hash); RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key && !exp->exp_failed); } static void * nid_export_object(struct hlist_node *hnode) { return hlist_entry(hnode, struct obd_export, exp_nid_hash); } static void nid_export_get(struct cfs_hash *hs, struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_nid_hash); class_export_get(exp); } static void nid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_nid_hash); class_export_put(exp); } static struct cfs_hash_ops nid_hash_ops = { .hs_hash = nid_hash, .hs_key = nid_key, .hs_keycmp = nid_kepcmp, .hs_object = nid_export_object, .hs_get = nid_export_get, .hs_put_locked = nid_export_put_locked, }; /* * nid<->nidstats hash operations */ static void * nidstats_key(struct hlist_node *hnode) { struct nid_stat *ns; ns = hlist_entry(hnode, struct nid_stat, nid_hash); return &ns->nid; } static int nidstats_keycmp(const void *key, struct hlist_node *hnode) { return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key; } static void * nidstats_object(struct hlist_node *hnode) { return hlist_entry(hnode, struct nid_stat, nid_hash); } static void nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode) { struct nid_stat *ns; ns = hlist_entry(hnode, struct nid_stat, nid_hash); nidstat_getref(ns); } static void nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode) { struct nid_stat *ns; ns = hlist_entry(hnode, struct nid_stat, nid_hash); nidstat_putref(ns); } static struct cfs_hash_ops nid_stat_hash_ops = { .hs_hash = nid_hash, .hs_key = nidstats_key, .hs_keycmp = nidstats_keycmp, .hs_object = nidstats_object, .hs_get = nidstats_get, .hs_put_locked = nidstats_put_locked, }; /* * client_generation<->export hash operations */ static unsigned gen_hash(struct cfs_hash *hs, const void *key, unsigned mask) { return cfs_hash_djb2_hash(key, sizeof(__u32), mask); } static void * gen_key(struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_gen_hash); RETURN(&exp->exp_target_data.ted_lcd->lcd_generation); } /* * NOTE: It is impossible to find an export that is in failed * state with this function */ static int gen_kepcmp(const void *key, struct hlist_node *hnode) { struct obd_export *exp; LASSERT(key); exp = hlist_entry(hnode, struct obd_export, exp_gen_hash); RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key && !exp->exp_failed); } static void * gen_export_object(struct hlist_node *hnode) { return hlist_entry(hnode, struct obd_export, exp_gen_hash); } static void gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_gen_hash); class_export_get(exp); } static void gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode) { struct obd_export *exp; exp = hlist_entry(hnode, struct obd_export, exp_gen_hash); class_export_put(exp); } static struct cfs_hash_ops gen_hash_ops = { .hs_hash = gen_hash, .hs_key = gen_key, .hs_keycmp = gen_kepcmp, .hs_object = gen_export_object, .hs_get = gen_export_get, .hs_put_locked = gen_export_put_locked, };