* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2016, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_CLASS
+#include <linux/kobject.h>
#include <linux/string.h>
#include <llog_swab.h>
#include "llog_internal.h"
-static struct cfs_hash_ops uuid_hash_ops;
-static struct cfs_hash_ops nid_hash_ops;
+#ifdef HAVE_SERVER_SUPPORT
static struct cfs_hash_ops nid_stat_hash_ops;
static struct cfs_hash_ops gen_hash_ops;
+#endif /* HAVE_SERVER_SUPPORT */
+
+/*
+ * uuid<->export lustre hash operations
+ */
+/*
+ * NOTE: It is impossible to find an export that is in failed
+ * state with this function
+ */
+static int
+uuid_keycmp(struct rhashtable_compare_arg *arg, const void *obj)
+{
+ const struct obd_uuid *uuid = arg->key;
+ const struct obd_export *exp = obj;
+
+ if (obd_uuid_equals(uuid, &exp->exp_client_uuid) &&
+ !exp->exp_failed)
+ return 0;
+ return -ESRCH;
+}
+
+static void
+obd_export_exit(void *vexport, void *data)
+{
+ struct obd_export *exp = vexport;
+
+ class_export_put(exp);
+}
+
+static const struct rhashtable_params uuid_hash_params = {
+ .key_len = sizeof(struct obd_uuid),
+ .key_offset = offsetof(struct obd_export, exp_client_uuid),
+ .head_offset = offsetof(struct obd_export, exp_uuid_hash),
+ .obj_cmpfn = uuid_keycmp,
+ .max_size = MAX_OBD_DEVICES,
+ .automatic_shrinking = true,
+};
+
+int obd_uuid_add(struct obd_device *obd, struct obd_export *export)
+{
+ int rc;
+
+ class_export_get(export);
+ rcu_read_lock();
+ rc = rhashtable_lookup_insert_fast(&obd->obd_uuid_hash,
+ &export->exp_uuid_hash,
+ uuid_hash_params);
+ if (rc) {
+ class_export_put(export);
+ if (rc != -EEXIST) {
+ /* map obscure error codes to -ENOMEM */
+ rc = -ENOMEM;
+ } else {
+ rc = -EALREADY;
+ }
+ }
+ rcu_read_unlock();
+
+ return rc;
+}
+EXPORT_SYMBOL(obd_uuid_add);
+
+void obd_uuid_del(struct obd_device *obd, struct obd_export *export)
+{
+ int rc;
+
+ rcu_read_lock();
+ rc = rhashtable_remove_fast(&obd->obd_uuid_hash,
+ &export->exp_uuid_hash,
+ uuid_hash_params);
+ if (!rc)
+ class_export_put(export);
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(obd_uuid_del);
+
+#ifdef HAVE_SERVER_SUPPORT
+/* obd_uuid_lookup() is used only server side by target_handle_connect(),
+ * mdt_hsm_agent_send(), and obd_export_evict_by_uuid().
+ */
+struct obd_export *obd_uuid_lookup(struct obd_device *obd,
+ struct obd_uuid *uuid)
+{
+ struct obd_export *export = NULL;
+
+ rcu_read_lock();
+ export = rhashtable_lookup_fast(&obd->obd_uuid_hash, uuid,
+ uuid_hash_params);
+ if (export && !refcount_inc_not_zero(&export->exp_handle.h_ref))
+ export = NULL;
+ rcu_read_unlock();
+
+ return export;
+}
+EXPORT_SYMBOL(obd_uuid_lookup);
+
+/*
+ * nid<->export hash operations
+ */
+static u32 nid_keyhash(const void *data, u32 key_len, u32 seed)
+{
+ const struct obd_export *exp = data;
+ void *key;
+
+ if (!exp->exp_connection)
+ return 0;
+
+ key = &exp->exp_connection->c_peer.nid;
+ return jhash2(key, key_len / sizeof(u32), seed);
+}
+
+/*
+ * NOTE: It is impossible to find an export that is in failed
+ * state with this function
+ */
+static int
+nid_keycmp(struct rhashtable_compare_arg *arg, const void *obj)
+{
+ const lnet_nid_t *nid = arg->key;
+ const struct obd_export *exp = obj;
+
+ if (exp->exp_connection->c_peer.nid == *nid)
+ return 0;
+
+ return -ESRCH;
+}
+
+static void
+nid_export_exit(void *vexport, void *data)
+{
+ struct obd_export *exp = vexport;
+
+ class_export_put(exp);
+}
+
+static const struct rhashtable_params nid_hash_params = {
+ .key_len = sizeof(lnet_nid_t),
+ .head_offset = offsetof(struct obd_export, exp_nid_hash),
+ .obj_hashfn = nid_keyhash,
+ .obj_cmpfn = nid_keycmp,
+ .automatic_shrinking = true,
+};
+
+int obd_nid_add(struct obd_device *obd, struct obd_export *exp)
+{
+ int rc;
+
+ if (exp == exp->exp_obd->obd_self_export || exp->exp_hashed)
+ return 0;
+
+ class_export_get(exp);
+ rc = rhltable_insert_key(&obd->obd_nid_hash,
+ &exp->exp_connection->c_peer.nid,
+ &exp->exp_nid_hash,
+ nid_hash_params);
+ if (rc) {
+ class_export_put(exp);
+ /* map obscure error codes to -ENOMEM */
+ rc = -ENOMEM;
+ } else {
+ exp->exp_hashed = 1;
+ }
+ return rc;
+}
+EXPORT_SYMBOL(obd_nid_add);
+
+void obd_nid_del(struct obd_device *obd, struct obd_export *exp)
+{
+ int rc;
+
+ if (exp == exp->exp_obd->obd_self_export || !exp->exp_hashed)
+ return;
+
+ rc = rhltable_remove(&obd->obd_nid_hash, &exp->exp_nid_hash,
+ nid_hash_params);
+ if (rc == 0) {
+ class_export_put(exp);
+ exp->exp_hashed = 0;
+ }
+}
+EXPORT_SYMBOL(obd_nid_del);
+
+int obd_nid_export_for_each(struct obd_device *obd, lnet_nid_t nid,
+ int cb(struct obd_export *exp, void *data),
+ void *data)
+{
+ struct rhlist_head *exports, *tmp;
+ struct obd_export *exp;
+ int ret = 0;
+
+ rcu_read_lock();
+ exports = rhltable_lookup(&obd->obd_nid_hash, &nid, nid_hash_params);
+ if (!exports) {
+ ret = -ENODEV;
+ goto out_unlock;
+ }
+
+ rhl_for_each_entry_rcu(exp, tmp, exports, exp_nid_hash) {
+ if (!exp->exp_failed && cb(exp, data))
+ ret++;
+ }
+
+out_unlock:
+ rcu_read_unlock();
+ return ret;
+}
+EXPORT_SYMBOL(obd_nid_export_for_each);
+#endif /* HAVE_SERVER_SUPPORT */
/*********** 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;
+ char *ptr;
- if (!buf)
- return 1;
+ if (!buf)
+ return 1;
- if ((ptr = strstr(buf, key)) == NULL)
- return 1;
+ ptr = strstr(buf, key);
+ if (!ptr)
+ return 1;
- if (valp)
- *valp = ptr + strlen(key);
+ if (valp)
+ *valp = ptr + strlen(key);
- return 0;
+ return 0;
}
EXPORT_SYMBOL(class_find_param);
char *value = NULL;
int name_len = 0;
- if (param == NULL || ptr == NULL)
+ if (!param || !ptr)
RETURN(NULL);
value = strchr(param, '=');
- if (value == NULL)
- name_len = strlen(param);
- else
+ if (value)
name_len = value - param;
+ else
+ name_len = strlen(param);
- while (ptr->old_param != NULL) {
+ while (ptr->old_param) {
if (strncmp(param, ptr->old_param, name_len) == 0 &&
name_len == strlen(ptr->old_param))
RETURN(ptr);
*/
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;
+ 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) {
+ 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) {
+ 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. */
+/*
+ * 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 (!buf)
+ return 1;
- if (memcmp(buf, key, strlen(key)) != 0)
- return 1;
+ if (memcmp(buf, key, strlen(key)) != 0)
+ return 1;
- if (valp)
- *valp = buf + strlen(key);
+ if (valp)
+ *valp = buf + strlen(key);
- return 0;
+ 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;
+ lnet_nid_t *nid = (lnet_nid_t *)value;
- *nid = libcfs_str2nid(buf);
- if (*nid != LNET_NID_ANY)
- return 0;
+ *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;
+ return -EINVAL;
}
static int parse_net(char *buf, void *value)
{
- __u32 *net = (__u32 *)value;
+ __u32 *net = (__u32 *)value;
- *net = libcfs_str2net(buf);
- CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
- return 0;
+ *net = libcfs_str2net(buf);
+ CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
+ return 0;
}
enum {
- CLASS_PARSE_NID = 1,
- CLASS_PARSE_NET,
+ CLASS_PARSE_NID = 1,
+ CLASS_PARSE_NET,
};
-/* 0 is good nid,
- 1 not found
- < 0 error
- endh is set to next separator */
+/*
+ * 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:
+ 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)
+ 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;
+ 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_NET, (void *)net, endh, 0);
}
-/* 1 param contains key and match
+/*
+ * 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;
+ 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;
+ __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)
/********************** class fns **********************/
/**
- * Create a new obd device and set the type, name and uuid. If successful,
+ * 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);
+ struct obd_export *exp;
+ struct obd_device *obd = NULL;
+ char *typename, *name, *uuid;
+ int rc, len;
+
+ ENTRY;
- obd->obd_attached = 1;
- CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
+ 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);
+ len = strlen(uuid);
+ if (len >= sizeof(obd->obd_uuid)) {
+ CERROR("%s: uuid must be < %d bytes long\n",
+ name, (int)sizeof(obd->obd_uuid));
+ RETURN(-EINVAL);
+ }
+
+ obd = class_newdev(typename, name, uuid);
+ if (IS_ERR(obd)) { /* Already exists or out of obds */
+ rc = PTR_ERR(obd);
+ CERROR("Cannot create device %s of type %s : %d\n",
+ name, typename, rc);
+ RETURN(rc);
+ }
+ 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);
+
+ exp = class_new_export_self(obd, &obd->obd_uuid);
+ if (IS_ERR(exp)) {
+ rc = PTR_ERR(exp);
+ class_free_dev(obd);
+ RETURN(rc);
+ }
+
+ obd->obd_self_export = exp;
+ list_del_init(&exp->exp_obd_chain_timed);
+ class_export_put(exp);
+
+ rc = class_register_device(obd);
+ if (rc != 0) {
+ class_decref(obd, "newdev", obd);
+ RETURN(rc);
+ }
+
+ 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;
+
+ RETURN(0);
}
EXPORT_SYMBOL(class_attach);
-/** Create hashes, self-export, and call type-specific setup.
+/**
+ * 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) */
+ int err = 0;
+
+ 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;
+ 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_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 an uuid-export lustre hash */
+ err = rhashtable_init(&obd->obd_uuid_hash, &uuid_hash_params);
+ if (err)
+ GOTO(err_starting, err);
+
+#ifdef HAVE_SERVER_SUPPORT
+ /* create a nid-export lustre hash */
+ err = rhltable_init(&obd->obd_nid_hash, &nid_hash_params);
+ if (err)
+ GOTO(err_uuid_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_nid_hash, err = -ENOMEM);
/* create a client_generation-export lustre hash */
obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
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);
+ GOTO(err_nid_stats_hash, err = -ENOMEM);
+#endif /* HAVE_SERVER_SUPPORT */
- err = obd_setup(obd, lcfg);
- if (err)
- GOTO(err_exp, err);
+ err = obd_setup(obd, lcfg);
+ if (err)
+#ifdef HAVE_SERVER_SUPPORT
+ GOTO(err_gen_hash, err);
+#else
+ GOTO(err_uuid_hash, err);
+#endif /* ! HAVE_SERVER_SUPPORT */
- obd->obd_set_up = 1;
+ 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;
- }
+ CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
+ obd->obd_name, obd->obd_uuid.uuid);
+
+ RETURN(0);
+
+#ifdef HAVE_SERVER_SUPPORT
+err_gen_hash:
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;
+err_nid_stats_hash:
+ if (obd->obd_nid_stats_hash) {
+ cfs_hash_putref(obd->obd_nid_stats_hash);
+ obd->obd_nid_stats_hash = NULL;
+ }
+err_nid_hash:
+ rhltable_destroy(&obd->obd_nid_hash);
+#endif /* HAVE_SERVER_SUPPORT */
+err_uuid_hash:
+ rhashtable_destroy(&obd->obd_uuid_hash);
+err_starting:
+ 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.
+/**
+ * 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;
+ ENTRY;
- if (obd->obd_set_up) {
- CERROR("OBD device %d still set up\n", obd->obd_minor);
- RETURN(-EBUSY);
- }
+ 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) {
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);
+ /* cleanup in progress. we don't like to find this device after now */
+ class_unregister_device(obd);
+
+ CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
+ obd->obd_name, obd->obd_uuid.uuid);
- class_decref(obd, "attach", obd);
- RETURN(0);
+ class_decref(obd, "newdev", obd);
+
+ RETURN(0);
}
EXPORT_SYMBOL(class_detach);
-/** Start shutting down the obd. There may be in-progess ops when
+/**
+ * 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().
*/
}
/* Leave this on forever */
obd->obd_stopping = 1;
+ /*
+ * function can't return error after that point, so clear setup flag
+ * as early as possible to avoid finding via obd_devs / hash
+ */
+ obd->obd_set_up = 0;
spin_unlock(&obd->obd_dev_lock);
/* wait for already-arrived-connections to finish. */
case 'A':
LCONSOLE_WARN("Failing over %s\n",
obd->obd_name);
+ spin_lock(&obd->obd_dev_lock);
obd->obd_fail = 1;
+#ifdef HAVE_SERVER_SUPPORT
obd->obd_no_transno = 1;
+#endif
obd->obd_no_recov = 1;
+ spin_unlock(&obd->obd_dev_lock);
if (OBP(obd, iocontrol)) {
obd_iocontrol(OBD_IOC_SYNC,
obd->obd_self_export,
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);
- }
+ CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d/%d\n",
+ obd->obd_name, obd->obd_num_exports,
+ atomic_read(&obd->obd_refcount) - 2);
+ dump_exports(obd, 0, D_HA);
+ class_disconnect_exports(obd);
/* Precleanup, we must make sure all exports get destroyed. */
err = obd_precleanup(obd);
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;
- }
-
+ rhashtable_free_and_destroy(&obd->obd_uuid_hash, obd_export_exit,
+ NULL);
+#ifdef HAVE_SERVER_SUPPORT
/* destroy a nid-export hash body */
- if (obd->obd_nid_hash) {
- cfs_hash_putref(obd->obd_nid_hash);
- obd->obd_nid_hash = NULL;
- }
+ rhltable_free_and_destroy(&obd->obd_nid_hash, nid_export_exit, NULL);
/* destroy a nid-stats hash body */
if (obd->obd_nid_stats_hash) {
cfs_hash_putref(obd->obd_gen_hash);
obd->obd_gen_hash = NULL;
}
-
+#endif /* HAVE_SERVER_SUPPORT */
class_decref(obd, "setup", obd);
obd->obd_set_up = 0;
}
struct obd_device *class_incref(struct obd_device *obd,
- const char *scope, const void *source)
+ const char *scope,
+ const void *source)
{
- lu_ref_add_atomic(&obd->obd_reference, scope, 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,
+ CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
atomic_read(&obd->obd_refcount));
- return obd;
+ return obd;
}
EXPORT_SYMBOL(class_incref);
void class_decref(struct obd_device *obd, const char *scope, const void *source)
{
- int err;
- int refs;
+ int last;
- spin_lock(&obd->obd_dev_lock);
- atomic_dec(&obd->obd_refcount);
- refs = atomic_read(&obd->obd_refcount);
- spin_unlock(&obd->obd_dev_lock);
+ CDEBUG(D_INFO, "Decref %s (%p) now %d - %s\n", obd->obd_name, obd,
+ atomic_read(&obd->obd_refcount), scope);
+
+ LASSERT(obd->obd_num_exports >= 0);
+ last = atomic_dec_and_test(&obd->obd_refcount);
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);
- }
+ if (last) {
+ struct obd_export *exp;
+
+ LASSERT(!obd->obd_attached);
+ /*
+ * All exports have been destroyed; there should
+ * be no more in-progress ops by this point.
+ */
+ exp = obd->obd_self_export;
+
+ if (exp) {
+ exp->exp_flags |= exp_flags_from_obd(obd);
+ class_unlink_export(exp);
+ }
+ }
}
EXPORT_SYMBOL(class_decref);
-/** Add a failover nid location.
- * Client obd types contact server obd types using this nid list.
+/**
+ * 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) &&
+ 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);
- }
+ 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);
- }
+ 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);
+ obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
+ rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
- RETURN(rc);
+ RETURN(rc);
}
-/** Remove a failover nid location.
- */
+/** 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);
+ 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 *class_get_profile(const char *prof)
{
struct lustre_profile *lprof;
}
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.
+/**
+ * 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;
+ struct lustre_profile *lprof;
+ int err = 0;
+
+ ENTRY;
- CDEBUG(D_CONFIG, "Add profile %s\n", prof);
+ CDEBUG(D_CONFIG, "Add profile %s\n", prof);
- OBD_ALLOC(lprof, sizeof(*lprof));
- if (lprof == NULL)
- RETURN(-ENOMEM);
+ OBD_ALLOC(lprof, sizeof(*lprof));
+ if (!lprof)
+ 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);
- }
+ LASSERT(proflen == (strlen(prof) + 1));
+ OBD_ALLOC(lprof->lp_profile, proflen);
+ if (!lprof->lp_profile)
+ 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)
+ 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)
+ GOTO(out, err = -ENOMEM);
+ memcpy(lprof->lp_md, mdc, mdclen);
+ }
spin_lock(&lustre_profile_list_lock);
lprof->lp_refs = 1;
list_add(&lprof->lp_list, &lustre_profile_list);
spin_unlock(&lustre_profile_list_lock);
- RETURN(err);
+ 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);
+ 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);
/* 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 */
+ /*
+ * 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)
+ 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)
-{
- 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;
+/*
+ * We can't call lquota_process_config directly because
+ * it lives in a module that must be loaded after this one.
+ */
+#ifdef HAVE_SERVER_SUPPORT
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);
+#endif /* HAVE_SERVER_SUPPORT */
/**
* Rename the proc parameter in \a cfg with a new name \a new_name.
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;
+ 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));
value = strchr(param, '=');
- if (value == NULL)
- name_len = strlen(param);
- else
+ if (value)
name_len = value - param;
+ else
+ name_len = strlen(param);
new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
if (!new_param)
GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
- strcpy(new_param, new_name);
- if (value != NULL)
+ strlcpy(new_param, new_name, new_len);
+ if (value)
strcat(new_param, value);
OBD_ALLOC_PTR(bufs);
}
EXPORT_SYMBOL(lustre_cfg_rename);
-static int process_param2_config(struct lustre_cfg *lcfg)
+static ssize_t process_param2_config(struct lustre_cfg *lcfg)
{
char *param = lustre_cfg_string(lcfg, 1);
char *upcall = lustre_cfg_string(lcfg, 2);
+ struct kobject *kobj = NULL;
+ const char *subsys = param;
char *argv[] = {
[0] = "/usr/sbin/lctl",
[1] = "set_param",
};
ktime_t start;
ktime_t end;
- int rc;
+ size_t len;
+ int rc;
+
ENTRY;
+ print_lustre_cfg(lcfg);
+
+ len = strcspn(param, ".=");
+ if (!len)
+ return -EINVAL;
+
+ /* If we find '=' then its the top level sysfs directory */
+ if (param[len] == '=')
+ return class_set_global(param);
+
+ subsys = kstrndup(param, len, GFP_KERNEL);
+ if (!subsys)
+ return -ENOMEM;
+
+ kobj = kset_find_obj(lustre_kset, subsys);
+ kfree(subsys);
+ if (kobj) {
+ char *value = param;
+ char *envp[4];
+ int i;
+
+ param = strsep(&value, "=");
+ envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s", param);
+ envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
+ envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
+ ktime_get_real_seconds());
+ envp[3] = NULL;
+
+ rc = kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
+ for (i = 0; i < ARRAY_SIZE(envp); i++)
+ kfree(envp[i]);
+
+ kobject_put(kobj);
+
+ RETURN(rc);
+ }
/* Add upcall processing here. Now only lctl is supported */
if (strcmp(upcall, LCTL_UPCALL) != 0) {
RETURN(rc);
}
+#ifdef HAVE_SERVER_SUPPORT
void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
{
quota_process_config = qpc;
}
EXPORT_SYMBOL(lustre_register_quota_process_config);
+#endif /* HAVE_SERVER_SUPPORT */
+
+#define QMT0_DEV_NAME_LEN (LUSTRE_MAXFSNAME + sizeof("-QMT0000"))
+static struct obd_device *obd_find_qmt0(char *obd_name)
+{
+ char qmt_name[QMT0_DEV_NAME_LEN];
+ struct obd_device *qmt = NULL;
+
+ if (!server_name2fsname(obd_name, qmt_name, NULL)) {
+ strlcat(qmt_name, "-QMT0000", QMT0_DEV_NAME_LEN);
+ qmt = class_name2obd(qmt_name);
+ }
+
+ return qmt;
+}
-/** Process configuration commands given in lustre_cfg form.
+/**
+ * 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);
+ 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);
+ 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);
+ 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) {
+ struct lustre_sb_info *lsi;
+ unsigned long addr;
+ ssize_t count;
+
+ /*
+ * The instance name contains the sb:
+ * lustre-client-aacfe000
+ */
+ tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
+ if (!tmp || !*(++tmp))
+ GOTO(out, err = -EINVAL);
+
+ if (sscanf(tmp, "%lx", &addr) != 1)
+ GOTO(out, err = -EINVAL);
+
+ lsi = s2lsi((struct super_block *)addr);
+ /* This better be a real Lustre superblock! */
+ LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
+
+ count = class_modify_config(lcfg, PARAM_LLITE,
+ lsi->lsi_kobj);
+ err = count < 0 ? count : 0;
+ 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);
/*
* Client or server should not fail to mount if
* it hits an unknown configuration parameter.
*/
- if (err != 0)
+ if (err < 0)
CWARN("Ignoring unknown param %s\n", tmp);
GOTO(out, err = 0);
+#ifdef HAVE_SERVER_SUPPORT
} 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);
+#endif /* HAVE_SERVER_SUPPORT */
}
break;
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);
- }
-
+ /* Commands that require a device */
+ obd = class_name2obd(lustre_cfg_string(lcfg, 0));
+ if (!obd) {
+ 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),
+ 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));
+ if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
+ obd = obd_find_qmt0(obd->obd_name);
+ if (obd)
+ 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),
+ if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
+ obd = obd_find_qmt0(obd->obd_name);
+ if (obd)
+ 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);
-
- }
- }
+ if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
+ obd = obd_find_qmt0(obd->obd_name);
+ if (obd)
+ 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));
+ if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
+ obd = obd_find_qmt0(obd->obd_name);
+ if (obd)
+ obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
+ }
+ GOTO(out, err = 0);
+ }
+ /*
+ * Process config log ADD_MDC record twice to add MDC also to LOV
+ * for Data-on-MDT:
+ *
+ * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
+ * 4:lustre-MDT0000-mdc_UUID
+ */
+ case LCFG_ADD_MDC: {
+ struct obd_device *lov_obd;
+ char *clilmv;
+
+ err = obd_process_config(obd, sizeof(*lcfg), lcfg);
+ if (err)
+ GOTO(out, err);
+
+ /* make sure this is client LMV log entry */
+ clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
+ if (!clilmv)
+ GOTO(out, err);
+
+ /*
+ * replace 'lmv' with 'lov' name to address LOV device and
+ * process llog record to add MDC there.
+ */
+ clilmv[4] = 'o';
+ lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
+ if (lov_obd) {
+ err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
+ } else {
+ err = -ENOENT;
+ CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
+ obd->obd_name, lustre_cfg_string(lcfg, 0), err);
+ }
+ /* restore 'lmv' name */
+ clilmv[4] = 'm';
+ GOTO(out, err);
+ }
+ default: {
+ err = obd_process_config(obd, sizeof(*lcfg), lcfg);
+ GOTO(out, err);
+ }
+ }
+ EXIT;
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;
+ 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)
+ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
+ struct kobject *kobj)
{
- 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;
+ struct kobj_type *typ;
+ ssize_t count = 0;
+ int i;
if (lcfg->lcfg_command != LCFG_PARAM) {
CERROR("Unknown command: %d\n", lcfg->lcfg_command);
- RETURN(-EINVAL);
+ 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 */
+ typ = get_ktype(kobj);
+ if (!typ || !typ->default_attrs)
+ return -ENODEV;
+
+ print_lustre_cfg(lcfg);
+
+ /*
+ * 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++) {
+ struct attribute *attr;
+ size_t keylen;
+ char *value;
+ char *key;
+ int j;
+
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) {
+ /*
+ * If the prefix doesn't match, return error so we
+ * can pass it down the stack
+ */
+ return -EINVAL;
+
+ value = strchr(key, '=');
+ if (!value || *(value + 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 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);
- }
+ keylen = value - key;
+ value++;
+
+ attr = NULL;
+ for (j = 0; typ->default_attrs[j]; j++) {
+ if (!strncmp(typ->default_attrs[j]->name, key,
+ keylen)) {
+ attr = typ->default_attrs[j];
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;
+ if (!attr) {
+ char *envp[4], *param, *path;
+
+ path = kobject_get_path(kobj, GFP_KERNEL);
+ if (!path)
+ return -EINVAL;
+
+ /* convert sysfs path to uevent format */
+ param = path;
+ while ((param = strchr(param, '/')) != NULL)
+ *param = '.';
+
+ param = strstr(path, "fs.lustre.") + 10;
+
+ envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%.*s",
+ param, (int) keylen, key);
+ envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
+ envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
+ ktime_get_real_seconds());
+ envp[3] = NULL;
+
+ if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
+ CERROR("%s: failed to send uevent %s\n",
+ kobject_name(kobj), key);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(envp); i++)
+ kfree(envp[i]);
+ kfree(path);
} else {
- CDEBUG(D_CONFIG, "%s: Set parameter '%s'='%s'\n",
- lustre_cfg_string(lcfg, 0), key, sval);
+ count += lustre_attr_store(kobj, attr, value,
+ strlen(value));
}
}
-
- if (rc > 0)
- rc = 0;
- if (!rc && skip)
- rc = skip;
- RETURN(rc);
+ return count;
}
-EXPORT_SYMBOL(class_process_proc_param);
+EXPORT_SYMBOL(class_modify_config);
/*
* Supplemental functions for config logs, it allocates lustre_cfg
*/
struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
{
- struct llog_cfg_rec *lcr;
- int reclen;
+ struct llog_cfg_rec *lcr;
+ int reclen;
ENTRY;
sizeof(struct llog_rec_tail);
OBD_ALLOC(lcr, reclen);
- if (lcr == NULL)
+ if (!lcr)
RETURN(NULL);
lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
}
EXPORT_SYMBOL(lustre_cfg_rec_free);
-/** Parse a configuration llog, doing various manipulations on them
+/**
+ * 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.
if (rc)
GOTO(out, rc);
- /* Figure out config state info */
+ /* 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,
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 */
+ /* all previous flags off */
cfg->cfg_flags = CFG_F_MARKER;
server_name2index(marker->cm_tgtname,
&cfg->cfg_lwp_idx, NULL);
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) &&
+ /*
+ * A config command without a start marker before it is
+ * illegal
+ */
+ if (!(cfg->cfg_flags & CFG_F_MARKER) &&
(lcfg->lcfg_command != LCFG_MARKER)) {
- CWARN("Config not inside markers, ignoring! "
- "(inst: %p, uuid: %s, flags: %#x)\n",
+ CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
cfg->cfg_instance,
cfg->cfg_uuid.uuid, cfg->cfg_flags);
cfg->cfg_flags |= CFG_F_SKIP;
break;
}
- /*
- * For interoperability between 1.8 and 2.0,
- * rename "mds" obd device type to "mdt".
- */
+ /*
+ * 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);
#ifdef HAVE_SERVER_SUPPORT
/* newer MDS replaces LOV/OSC with LOD/OSP */
- {
+ if ((lcfg->lcfg_command == LCFG_ATTACH ||
+ lcfg->lcfg_command == LCFG_SET_PARAM ||
+ lcfg->lcfg_command == LCFG_PARAM) &&
+ cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
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))) {
+ if (typename &&
+ strcmp(typename, LUSTRE_LOV_NAME) == 0) {
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))) {
+ if (typename &&
+ strcmp(typename, LUSTRE_OSC_NAME) == 0) {
CDEBUG(D_CONFIG,
"For 2.x interoperability, rename obd "
"type from osc to osp (%s)\n",
lustre_cfg_bufs_init(&bufs, lcfg);
if (cfg->cfg_instance &&
+ lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
- sizeof(cfg->cfg_instance) * 2 + 4;
+ LUSTRE_MAXINSTANCE + 4;
OBD_ALLOC(inst_name, inst_len);
- if (inst_name == NULL)
+ if (!inst_name)
GOTO(out, rc = -ENOMEM);
- snprintf(inst_name, inst_len, "%s-%p",
+ snprintf(inst_name, inst_len, "%s-%016lx",
lustre_cfg_string(lcfg, 0),
cfg->cfg_instance);
lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
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) {
+ /* override llog UUID for clients, to insure they are unique */
+ if (cfg->cfg_instance && 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 &&
+ /*
+ * 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 &&
lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
+ /* After ASLR changes cfg_instance this needs fixing */
+ /* "obd" is set in config_log_find_or_add() */
+ struct obd_device *obd = (void *)cfg->cfg_instance;
+
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);
+ obd->obd_name);
}
- /* Add net info to setup command
+ /*
+ * Add net info to setup command
* if given on command line.
* So config log will be:
* [0]: client name
}
}
- /* Skip add_conn command if uuid is
- * not on restricted net */
+ /*
+ * 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);
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 */
+ /*
+ * 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);
parse_out:
llog_close(env, llh);
- RETURN(rc);
+ 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.
*
*/
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;
+ 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);
return rc;
ldata = lcfg_cmd2data(lcfg->lcfg_command);
- if (ldata == NULL)
+ if (!ldata)
return -ENOTTY;
if (lcfg->lcfg_command == LCFG_MARKER)
/* form YAML entity */
ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
rec->lrh_index, ldata->ltd_name);
+ if (end - ptr <= 0)
+ goto out_overflow;
- if (lcfg->lcfg_flags)
+ if (lcfg->lcfg_flags) {
ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
lcfg->lcfg_flags);
- if (lcfg->lcfg_num)
+ if (end - ptr <= 0)
+ goto out_overflow;
+ }
+ if (lcfg->lcfg_num) {
ptr += snprintf(ptr, end - ptr, ", num: %#08x",
lcfg->lcfg_num);
+ if (end - ptr <= 0)
+ goto out_overflow;
+ }
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 (end - ptr <= 0)
+ goto out_overflow;
}
- if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0)
+ if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
ptr += snprintf(ptr, end - ptr, ", device: %s",
lustre_cfg_string(lcfg, 0));
+ if (end - ptr <= 0)
+ goto out_overflow;
+ }
+
+ if (lcfg->lcfg_command == LCFG_SET_PARAM) {
+ /*
+ * set_param -P parameters have param=val here, separate
+ * them through pointer magic and print them out in
+ * native yamlese
+ */
+ char *cfg_str = lustre_cfg_string(lcfg, 1);
+ char *tmp = strchr(cfg_str, '=');
+ size_t len;
+
+ if (!tmp)
+ goto out_done;
+
+ ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
+ len = tmp - cfg_str + 1;
+ snprintf(ptr, len, "%s", cfg_str);
+ ptr += len - 1;
+
+ ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
+ ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
+
+ goto out_done;
+ }
for (i = 1; i < lcfg->lcfg_bufcount; i++) {
- if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0)
+ if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
ptr += snprintf(ptr, end - ptr, ", %s: %s",
ldata->ltd_bufs[i - 1],
lustre_cfg_string(lcfg, i));
+ if (end - ptr <= 0)
+ goto out_overflow;
+ }
}
+out_done:
ptr += snprintf(ptr, end - ptr, " }\n");
- /* return consumed bytes */
+out_overflow:
+ /* Return consumed bytes. If the buffer overflowed, zero last byte */
rc = ptr - buf;
+ if (rc > size) {
+ rc = -EOVERFLOW;
+ *(end - 1) = '\0';
+ }
+
return rc;
}
char nidstr[LNET_NIDSTR_SIZE];
libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
- ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx)\n ",
+ ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx) ",
nidstr, lcfg->lcfg_nid);
}
struct llog_handle *handle,
struct llog_rec_hdr *rec, void *data)
{
- char *outstr;
- int rc = 0;
+ char *outstr;
+ int rc = 0;
ENTRY;
OBD_ALLOC(outstr, 256);
- if (outstr == NULL)
+ if (!outstr)
RETURN(-ENOMEM);
if (rec->lrh_type == OBD_CFG_REC) {
RETURN(rc);
}
-/** Call class_cleanup and class_detach.
+/**
+ * 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;
+ char flags[3] = "";
+ struct lustre_cfg *lcfg;
+ struct lustre_cfg_bufs bufs;
+ int rc;
- if (!obd) {
- CERROR("empty cleanup\n");
- RETURN(-EALREADY);
- }
+ ENTRY;
+
+ if (!obd) {
+ CERROR("empty cleanup\n");
+ RETURN(-EALREADY);
+ }
- if (obd->obd_force)
- strcat(flags, "F");
- if (obd->obd_fail)
- strcat(flags, "A");
+ if (obd->obd_force)
+ strlcat(flags, "F", sizeof(flags));
+ if (obd->obd_fail)
+ strlcat(flags, "A", sizeof(flags));
- CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
- obd->obd_name, flags);
+ 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);
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);
+ 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);
+#ifdef HAVE_SERVER_SUPPORT
/*
- * 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
+ * nid<->nidstats 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)
+nidstats_hash(struct cfs_hash *hs, const void *key, unsigned int mask)
{
- struct obd_export *exp;
-
- exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
- class_export_put(exp);
+ return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
}
-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;
+ struct nid_stat *ns;
ns = hlist_entry(hnode, struct nid_stat, nid_hash);
- return &ns->nid;
+ 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;
+ return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
}
static void *
static void
nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
{
- struct nid_stat *ns;
+ struct nid_stat *ns;
ns = hlist_entry(hnode, struct nid_stat, nid_hash);
- nidstat_getref(ns);
+ nidstat_getref(ns);
}
static void
nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
{
- struct nid_stat *ns;
+ struct nid_stat *ns;
ns = hlist_entry(hnode, struct nid_stat, nid_hash);
- nidstat_putref(ns);
+ 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,
+ .hs_hash = nidstats_hash,
+ .hs_key = nidstats_key,
+ .hs_keycmp = nidstats_keycmp,
+ .hs_object = nidstats_object,
+ .hs_get = nidstats_get,
+ .hs_put_locked = nidstats_put_locked,
};
.hs_get = gen_export_get,
.hs_put_locked = gen_export_put_locked,
};
+
+#endif /* HAVE_SERVER_SUPPORT */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff