LU-5092 nodemap: save nodemaps to targets for caching

[fs/lustre-release.git] / lustre / include / lustre_nodemap.h

diff --git a/lustre/include/lustre_nodemap.h b/lustre/include/lustre_nodemap.h
index 375154d..44527a0 100644 (file)
--- a/lustre/include/lustre_nodemap.h
+++ b/lustre/include/lustre_nodemap.h
@@ -27,8 +27,9 @@
 #ifndef _LUSTRE_NODEMAP_H
 #define _LUSTRE_NODEMAP_H
 
 #ifndef _LUSTRE_NODEMAP_H
 #define _LUSTRE_NODEMAP_H
 

+#include <lustre/lustre_idl.h>
+

 #define LUSTRE_NODEMAP_NAME "nodemap"
 #define LUSTRE_NODEMAP_NAME "nodemap"

-#define LUSTRE_NODEMAP_NAME_LENGTH 16

 
 #define LUSTRE_NODEMAP_DEFAULT_ID 0
 
 
 #define LUSTRE_NODEMAP_DEFAULT_ID 0
 


@@ -63,10 +64,8 @@ struct lu_nodemap {
        char                     nm_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
        /* flags to govern nodemap behavior */
        bool                     nmf_trust_client_ids:1,
        char                     nm_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
        /* flags to govern nodemap behavior */
        bool                     nmf_trust_client_ids:1,

-                                nmf_allow_root_access:1,
-                                nmf_block_lookups:1,
-                                nmf_hmac_required:1,
-                                nmf_encryption_required:1;
+                                nmf_deny_unknown:1,
+                                nmf_allow_root_access:1;

        /* unique ID set by MGS */
        unsigned int             nm_id;
        /* nodemap ref counter */
        /* unique ID set by MGS */
        unsigned int             nm_id;
        /* nodemap ref counter */


@@ -93,11 +92,23 @@ struct lu_nodemap {
        /* access by nodemap name */
        struct hlist_node        nm_hash;
        struct nodemap_pde      *nm_pde_data;
        /* access by nodemap name */
        struct hlist_node        nm_hash;
        struct nodemap_pde      *nm_pde_data;

+       /* fileset the nodes of this nodemap are restricted to */
+       char                     nm_fileset[PATH_MAX+1];

 
 

-       /* used when unloading nodemaps */
+       /* used when loading/unloading nodemaps */

        struct list_head         nm_list;
 };
 
        struct list_head         nm_list;
 };
 

+/* Store handles to local MGC storage to save config locally. In future
+ * versions of nodemap, mgc will receive the config directly and so this might
+ * not be needed.
+ */
+struct nm_config_file {
+       struct local_oid_storage        *ncf_los;
+       struct dt_object                *ncf_obj;
+       struct list_head                 ncf_list;
+};
+

 void nodemap_activate(const bool value);
 int nodemap_add(const char *nodemap_name);
 int nodemap_del(const char *nodemap_name);
 void nodemap_activate(const bool value);
 int nodemap_add(const char *nodemap_name);
 int nodemap_del(const char *nodemap_name);


@@ -109,6 +120,7 @@ int nodemap_add_range(const char *name, const lnet_nid_t nid[2]);
 int nodemap_del_range(const char *name, const lnet_nid_t nid[2]);
 int nodemap_set_allow_root(const char *name, bool allow_root);
 int nodemap_set_trust_client_ids(const char *name, bool trust_client_ids);
 int nodemap_del_range(const char *name, const lnet_nid_t nid[2]);
 int nodemap_set_allow_root(const char *name, bool allow_root);
 int nodemap_set_trust_client_ids(const char *name, bool trust_client_ids);

+int nodemap_set_deny_unknown(const char *name, bool deny_unknown);

 int nodemap_set_squash_uid(const char *name, uid_t uid);
 int nodemap_set_squash_gid(const char *name, gid_t gid);
 bool nodemap_can_setquota(const struct lu_nodemap *nodemap);
 int nodemap_set_squash_uid(const char *name, uid_t uid);
 int nodemap_set_squash_gid(const char *name, gid_t gid);
 bool nodemap_can_setquota(const struct lu_nodemap *nodemap);


@@ -116,12 +128,82 @@ int nodemap_add_idmap(const char *name, enum nodemap_id_type id_type,
                      const __u32 map[2]);
 int nodemap_del_idmap(const char *name, enum nodemap_id_type id_type,
                      const __u32 map[2]);
                      const __u32 map[2]);
 int nodemap_del_idmap(const char *name, enum nodemap_id_type id_type,
                      const __u32 map[2]);

+int nodemap_set_fileset(const char *name, const char *fileset);
+char *nodemap_get_fileset(const struct lu_nodemap *nodemap);

 __u32 nodemap_map_id(struct lu_nodemap *nodemap,
                     enum nodemap_id_type id_type,
                     enum nodemap_tree_type tree_type, __u32 id);
 ssize_t nodemap_map_acl(struct lu_nodemap *nodemap, void *buf, size_t size,
                        enum nodemap_tree_type tree_type);
 __u32 nodemap_map_id(struct lu_nodemap *nodemap,
                     enum nodemap_id_type id_type,
                     enum nodemap_tree_type tree_type, __u32 id);
 ssize_t nodemap_map_acl(struct lu_nodemap *nodemap, void *buf, size_t size,
                        enum nodemap_tree_type tree_type);

+#ifdef HAVE_SERVER_SUPPORT

 void nodemap_test_nid(lnet_nid_t nid, char *name_buf, size_t name_len);
 void nodemap_test_nid(lnet_nid_t nid, char *name_buf, size_t name_len);

-__u32 nodemap_test_id(lnet_nid_t nid, enum nodemap_id_type idtype,
-                     __u32 client_id);
+#else
+#define nodemap_test_nid(nid, name_buf, name_len) do {} while(0)
+#endif
+int nodemap_test_id(lnet_nid_t nid, enum nodemap_id_type idtype,
+                   __u32 client_id, __u32 *fs_id);
+
+enum nm_config_file_type {
+       NCFT_MGS,
+       NCFT_TGT,
+};
+struct nm_config_file *nm_config_file_register(const struct lu_env *env,
+                                              struct dt_object *obj,
+                                              struct local_oid_storage *los,
+                                              enum nm_config_file_type ncf_type);
+void nm_config_file_deregister(const struct lu_env *env,
+                              struct nm_config_file *ncf,
+                              enum nm_config_file_type ncf_type);
+struct lu_nodemap *nodemap_get_from_exp(struct obd_export *exp);
+void nodemap_putref(struct lu_nodemap *nodemap);
+
+#ifdef HAVE_SERVER_SUPPORT
+struct nodemap_range_tree {
+       struct interval_node *nmrt_range_interval_root;
+       unsigned int nmrt_range_highest_id;
+};
+
+struct nodemap_config {
+       /* Highest numerical lu_nodemap.nm_id defined */
+       unsigned int nmc_nodemap_highest_id;
+
+       /* Simple flag to determine if nodemaps are active */
+       bool nmc_nodemap_is_active;
+
+       /* Pointer to default nodemap as it is needed more often */
+       struct lu_nodemap *nmc_default_nodemap;
+
+       /**
+        * Lock required to access the range tree.
+        */
+       struct rw_semaphore nmc_range_tree_lock;
+       struct nodemap_range_tree nmc_range_tree;
+
+       /**
+        * Hash keyed on nodemap name containing all
+        * nodemaps
+        */
+       struct cfs_hash *nmc_nodemap_hash;
+};
+
+struct nodemap_config *nodemap_config_alloc(void);
+void nodemap_config_dealloc(struct nodemap_config *config);
+void nodemap_config_set_active_mgc(struct nodemap_config *config);
+
+int nodemap_process_idx_pages(struct nodemap_config *config, union lu_page *lip,
+                             struct lu_nodemap **recent_nodemap);
+
+struct dt_device;
+int nodemap_fs_init(const struct lu_env *env, struct dt_device *dev,
+                   struct obd_device *obd, struct local_oid_storage *los);
+void nodemap_fs_fini(const struct lu_env *env, struct obd_device *obd);
+#else /* disable nodemap processing in MGC of non-servers */
+static inline int nodemap_process_idx_pages(void *config,
+                                           union lu_page *lip,
+                                           struct lu_nodemap **recent_nodemap)
+{ return 0; }
+#endif /* HAVE_SERVER_SUPPORT */
+
+int nodemap_get_config_req(struct obd_device *mgs_obd,
+                          struct ptlrpc_request *req);

 #endif /* _LUSTRE_NODEMAP_H */
 #endif /* _LUSTRE_NODEMAP_H */