| /* |
| * 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.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, 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/obd_class.h" |
| #include <linux/string.h> |
| #include "../include/lustre_log.h" |
| #include "../include/lprocfs_status.h" |
| #include "../include/lustre_param.h" |
| |
| #include "llog_internal.h" |
| |
| static cfs_hash_ops_t uuid_hash_ops; |
| static cfs_hash_ops_t nid_hash_ops; |
| static cfs_hash_ops_t nid_stat_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; |
| |
| ptr = strstr(buf, key); |
| if (ptr == 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, 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); |
| } |
| EXPORT_SYMBOL(class_parse_net); |
| |
| /* 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; |
| } |
| EXPORT_SYMBOL(class_match_nid); |
| |
| 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; |
| } |
| EXPORT_SYMBOL(class_match_net); |
| |
| /********************** 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; |
| |
| 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 */ |
| cfs_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); |
| |
| llog_group_init(&obd->obd_olg, FID_SEQ_LLOG); |
| |
| 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); |
| |
| /* do the attach */ |
| if (OBP(obd, attach)) { |
| rc = OBP(obd, attach)(obd, sizeof(*lcfg), lcfg); |
| if (rc) |
| GOTO(out, rc = -EINVAL); |
| } |
| |
| /* 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; |
| |
| 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; |
| 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); |
| |
| 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; |
| } |
| 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) |
| { |
| 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-progress 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; |
| |
| 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; |
| |
| /* wait for already-arrived-connections to finish. */ |
| while (obd->obd_conn_inprogress > 0) { |
| spin_unlock(&obd->obd_dev_lock); |
| |
| cond_resched(); |
| |
| spin_lock(&obd->obd_dev_lock); |
| } |
| spin_unlock(&obd->obd_dev_lock); |
| |
| 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) { |
| /* refcount - 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); |
| class_disconnect_exports(obd); |
| } |
| |
| /* Precleanup, we must make sure all exports get destroyed. */ |
| err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS); |
| 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; |
| } |
| |
| class_decref(obd, "setup", obd); |
| obd->obd_set_up = 0; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(class_cleanup); |
| |
| 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); |
| } |
| if (OBP(obd, detach)) { |
| err = OBP(obd, detach)(obd); |
| if (err) |
| CERROR("Detach returned %d\n", 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; |
| |
| 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; |
| } |
| EXPORT_SYMBOL(class_add_conn); |
| |
| /** Remove a failover nid location. |
| */ |
| int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg) |
| { |
| struct obd_import *imp; |
| struct obd_uuid uuid; |
| int rc; |
| |
| 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; |
| } |
| |
| LIST_HEAD(lustre_profile_list); |
| |
| struct lustre_profile *class_get_profile(const char * prof) |
| { |
| struct lustre_profile *lprof; |
| |
| list_for_each_entry(lprof, &lustre_profile_list, lp_list) { |
| if (!strcmp(lprof->lp_profile, prof)) { |
| return lprof; |
| } |
| } |
| 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. |
| */ |
| int class_add_profile(int proflen, char *prof, int osclen, char *osc, |
| int mdclen, char *mdc) |
| { |
| struct lustre_profile *lprof; |
| int err = 0; |
| |
| 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); |
| } |
| |
| list_add(&lprof->lp_list, &lustre_profile_list); |
| 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; |
| |
| CDEBUG(D_CONFIG, "Del profile %s\n", prof); |
| |
| lprof = class_get_profile(prof); |
| if (lprof) { |
| list_del(&lprof->lp_list); |
| OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1); |
| OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1); |
| if (lprof->lp_md) |
| OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1); |
| OBD_FREE(lprof, sizeof(*lprof)); |
| } |
| } |
| EXPORT_SYMBOL(class_del_profile); |
| |
| /* COMPAT_146 */ |
| void class_del_profiles(void) |
| { |
| struct lustre_profile *lprof, *n; |
| |
| list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) { |
| list_del(&lprof->lp_list); |
| OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1); |
| OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1); |
| if (lprof->lp_md) |
| OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1); |
| OBD_FREE(lprof, sizeof(*lprof)); |
| } |
| } |
| EXPORT_SYMBOL(class_del_profiles); |
| |
| static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg) |
| { |
| 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; |
| |
| if (cfg == NULL || new_name == NULL) |
| return ERR_PTR(-EINVAL); |
| |
| param = lustre_cfg_string(cfg, 1); |
| if (param == NULL) |
| return 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 == NULL) |
| return ERR_PTR(-ENOMEM); |
| |
| strcpy(new_param, new_name); |
| if (value != NULL) |
| strcat(new_param, value); |
| |
| OBD_ALLOC_PTR(bufs); |
| if (bufs == NULL) { |
| OBD_FREE(new_param, new_len); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| lustre_cfg_bufs_reset(bufs, NULL); |
| lustre_cfg_bufs_init(bufs, cfg); |
| lustre_cfg_bufs_set_string(bufs, 1, new_param); |
| |
| new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs); |
| |
| OBD_FREE(new_param, new_len); |
| OBD_FREE_PTR(bufs); |
| if (new_cfg == NULL) |
| return ERR_PTR(-ENOMEM); |
| |
| 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; |
| |
| 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 |
| }; |
| struct timeval start; |
| struct timeval end; |
| int rc; |
| |
| |
| /* Add upcall processing here. Now only lctl is supported */ |
| if (strcmp(upcall, LCTL_UPCALL) != 0) { |
| CERROR("Unsupported upcall %s\n", upcall); |
| return -EINVAL; |
| } |
| |
| do_gettimeofday(&start); |
| rc = USERMODEHELPER(argv[0], argv, NULL); |
| do_gettimeofday(&end); |
| |
| if (rc < 0) { |
| CERROR( |
| "lctl: error invoking upcall %s %s %s: rc = %d; time %ldus\n", |
| argv[0], argv[1], argv[2], rc, |
| cfs_timeval_sub(&end, &start, NULL)); |
| } else { |
| CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n", |
| argv[0], argv[1], argv[2], |
| cfs_timeval_sub(&end, &start, NULL)); |
| 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) |
| ? "<all uuids>" : 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, 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); |
| break; |
| } |
| case LCFG_POOL_ADD: { |
| err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2), |
| lustre_cfg_string(lcfg, 3)); |
| GOTO(out, err = 0); |
| break; |
| } |
| case LCFG_POOL_REM: { |
| err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2), |
| lustre_cfg_string(lcfg, 3)); |
| GOTO(out, err = 0); |
| break; |
| } |
| case LCFG_POOL_DEL: { |
| err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2)); |
| GOTO(out, err = 0); |
| break; |
| } |
| 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; |
| |
| 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 */ |
| class_match_param(key, prefix, &key); |
| sval = strchr(key, '='); |
| if (!sval || (*(sval + 1) == 0)) { |
| CERROR("Can't parse param %s (missing '=')\n", key); |
| /* 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, (char *)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) { |
| /* If the prefix doesn't match, return error so we |
| can pass it down the stack */ |
| if (strnchr(key, keylen, '.')) |
| return -ENOSYS; |
| CERROR("%s: unknown param %s\n", |
| (char *)lustre_cfg_string(lcfg, 0), key); |
| /* rc = -EINVAL; continue parsing other params */ |
| skip++; |
| } else if (rc < 0) { |
| CERROR("writing proc entry %s err %d\n", |
| var->name, rc); |
| rc = 0; |
| } else { |
| CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n", |
| lustre_cfg_string(lcfg, 0), |
| (int)strlen(prefix) - 1, prefix, |
| (int)(sval - key - 1), key, sval); |
| } |
| } |
| |
| if (rc > 0) |
| rc = 0; |
| if (!rc && skip) |
| rc = skip; |
| return rc; |
| } |
| EXPORT_SYMBOL(class_process_proc_param); |
| |
| extern int lustre_check_exclusion(struct super_block *sb, char *svname); |
| |
| /** 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 *clli = data; |
| int cfg_len = rec->lrh_len; |
| char *cfg_buf = (char*) (rec + 1); |
| int rc = 0; |
| |
| //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 inst = 0, 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", |
| clli->cfg_flags, marker->cm_flags); |
| if (marker->cm_flags & CM_START) { |
| /* all previous flags off */ |
| clli->cfg_flags = CFG_F_MARKER; |
| if (marker->cm_flags & CM_SKIP) { |
| clli->cfg_flags |= CFG_F_SKIP; |
| CDEBUG(D_CONFIG, "SKIP #%d\n", |
| marker->cm_step); |
| } else if ((marker->cm_flags & CM_EXCLUDE) || |
| (clli->cfg_sb && |
| lustre_check_exclusion(clli->cfg_sb, |
| marker->cm_tgtname))) { |
| clli->cfg_flags |= CFG_F_EXCLUDE; |
| CDEBUG(D_CONFIG, "EXCLUDE %d\n", |
| marker->cm_step); |
| } |
| } else if (marker->cm_flags & CM_END) { |
| clli->cfg_flags = 0; |
| } |
| } |
| /* A config command without a start marker before it is |
| illegal (post 146) */ |
| if (!(clli->cfg_flags & CFG_F_COMPAT146) && |
| !(clli->cfg_flags & CFG_F_MARKER) && |
| (lcfg->lcfg_command != LCFG_MARKER)) { |
| CWARN("Config not inside markers, ignoring! " |
| "(inst: %p, uuid: %s, flags: %#x)\n", |
| clli->cfg_instance, |
| clli->cfg_uuid.uuid, clli->cfg_flags); |
| clli->cfg_flags |= CFG_F_SKIP; |
| } |
| if (clli->cfg_flags & CFG_F_SKIP) { |
| CDEBUG(D_CONFIG, "skipping %#x\n", |
| clli->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; |
| } |
| } |
| |
| |
| if (clli->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_init(&bufs, lcfg); |
| |
| if (clli && clli->cfg_instance && |
| LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){ |
| inst = 1; |
| inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) + |
| sizeof(clli->cfg_instance) * 2 + 4; |
| OBD_ALLOC(inst_name, inst_len); |
| if (inst_name == NULL) |
| GOTO(out, rc = -ENOMEM); |
| sprintf(inst_name, "%s-%p", |
| lustre_cfg_string(lcfg, 0), |
| clli->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 (clli && clli->cfg_instance != NULL && |
| lcfg->lcfg_command == LCFG_ATTACH) { |
| lustre_cfg_bufs_set_string(&bufs, 2, |
| clli->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 (clli && clli->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, |
| clli->cfg_obdname); |
| } |
| |
| lcfg_new = lustre_cfg_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); |
| lustre_cfg_free(lcfg_new); |
| |
| if (inst) |
| 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 = {0, 0}; |
| struct llog_handle *llh; |
| llog_cb_t callback; |
| int rc; |
| |
| 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); |
| |
| /** |
| * parse config record and output dump in supplied buffer. |
| * This is separated from class_config_dump_handler() to use |
| * for ioctl needs as well |
| */ |
| 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; |
| |
| 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) |
| ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx)\n ", |
| libcfs_nid2str(lcfg->lcfg_nid), |
| 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)); |
| } |
| } |
| /* 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; |
| |
| 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; |
| } |
| |
| int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt, |
| char *name, struct config_llog_instance *cfg) |
| { |
| struct llog_handle *llh; |
| int rc; |
| |
| LCONSOLE_INFO("Dumping config log %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); |
| |
| rc = llog_process(env, llh, class_config_dump_handler, cfg, NULL); |
| parse_out: |
| llog_close(env, llh); |
| |
| LCONSOLE_INFO("End config log %s\n", name); |
| return rc; |
| } |
| EXPORT_SYMBOL(class_config_dump_llog); |
| |
| /** 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; |
| |
| 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); |
| lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs); |
| if (!lcfg) |
| return -ENOMEM; |
| |
| 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: |
| lustre_cfg_free(lcfg); |
| 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 cfs_hash_ops_t 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 cfs_hash_ops_t 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 cfs_hash_ops_t 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, |
| }; |