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LU-8359 ldlm: Wrong evict during failover
[fs/lustre-release.git] / lustre / include / obd_class.h
index 39ecf6b..0fafed0 100644 (file)
  *
  * 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2015, Intel Corporation.
+ * Copyright (c) 2011, 2016, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
                                          * and resends for avoid deadlocks */
 #define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
                                          * obd_osfs_age */
-#define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
-                                         * instead of a specific set. This
-                                         * means that we cannot rely on the set
-                                         * interpret routine to be called.
-                                         * lov_statfs_fini() must thus be called
-                                         * by the request interpret routine */
-#define OBD_STATFS_FOR_MDT0    0x0008  /* The statfs is only for retrieving
+#define OBD_STATFS_FOR_MDT0    0x0004  /* The statfs is only for retrieving
                                         * information from MDT0. */
 
-/* OBD Device Declarations */
-extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
-extern struct list_head obd_types;
-extern spinlock_t obd_types_lock;
 extern rwlock_t obd_dev_lock;
 
 /* OBD Operations Declarations */
@@ -101,7 +87,8 @@ char *obd_export_nid2str(struct obd_export *exp);
 
 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
-int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
+int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
+                         const char *sep);
 
 int obd_zombie_impexp_init(void);
 void obd_zombie_impexp_stop(void);
@@ -130,10 +117,6 @@ struct llog_rec_hdr;
 typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
                         struct llog_rec_hdr *, void *);
 
-extern atomic_t         obd_stale_export_num;
-extern struct list_head obd_stale_exports;
-extern spinlock_t       obd_stale_export_lock;
-
 struct obd_export *obd_stale_export_get(void);
 void obd_stale_export_put(struct obd_export *exp);
 void obd_stale_export_adjust(struct obd_export *exp);
@@ -152,12 +135,11 @@ struct obd_device *class_incref(struct obd_device *obd,
                                 const char *scope, const void *source);
 void class_decref(struct obd_device *obd,
                   const char *scope, const void *source);
-void dump_exports(struct obd_device *obd, int locks);
+void dump_exports(struct obd_device *obd, int locks, int debug_level);
 int class_config_llog_handler(const struct lu_env *env,
                              struct llog_handle *handle,
                              struct llog_rec_hdr *rec, void *data);
 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
-int class_add_uuid(const char *uuid, __u64 nid);
 
 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 #define CFG_F_MARKER    0x02   /* We are within a maker */
@@ -175,39 +157,59 @@ struct config_llog_instance {
        int                      cfg_last_idx; /* for partial llog processing */
        int                      cfg_flags;
        __u32                    cfg_lwp_idx;
+       __u32                    cfg_sub_clds;
 };
 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
                            char *name, struct config_llog_instance *cfg);
 
-enum {
-       CONFIG_T_CONFIG  = 0,
-       CONFIG_T_SPTLRPC = 1,
-       CONFIG_T_RECOVER = 2,
-       CONFIG_T_PARAMS  = 3,
-       CONFIG_T_NODEMAP = 4,
-       CONFIG_T_MAX     = 5
-};
+#define CONFIG_SUB_SPTLRPC     0x01
+#define CONFIG_SUB_RECOVER     0x02
+#define CONFIG_SUB_PARAMS      0x04
+#define CONFIG_SUB_NODEMAP     0x08
+#define CONFIG_SUB_BARRIER     0x10
+
+/* Sub clds should be attached to the config_llog_data when processing
+ * config log for client or server target. */
+#define CONFIG_SUB_CLIENT      (CONFIG_SUB_SPTLRPC | CONFIG_SUB_RECOVER | \
+                                CONFIG_SUB_PARAMS)
+#define CONFIG_SUB_SERVER      (CONFIG_SUB_CLIENT | CONFIG_SUB_NODEMAP | \
+                                CONFIG_SUB_BARRIER)
 
 #define PARAMS_FILENAME                "params"
+#define BARRIER_FILENAME       "barrier"
 #define LCTL_UPCALL            "lctl"
 
+static inline bool logname_is_barrier(const char *logname)
+{
+       char *ptr;
+
+       /* logname for barrier is "fsname-barrier" */
+       ptr = strstr(logname, BARRIER_FILENAME);
+       if (ptr && (ptr - logname) >= 2 &&
+           *(ptr - 1) == '-' && *(ptr + 7) == '\0')
+               return true;
+
+       return false;
+}
+
 /* list of active configuration logs  */
 struct config_llog_data {
-        struct ldlm_res_id          cld_resid;
-        struct config_llog_instance cld_cfg;
+       struct ldlm_res_id          cld_resid;
+       struct config_llog_instance cld_cfg;
        struct list_head            cld_list_chain;
        atomic_t                    cld_refcount;
        struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
-       struct config_llog_data    *cld_params; /* common parameters log */
+       struct config_llog_data    *cld_params; /* common parameters log */
        struct config_llog_data    *cld_recover;/* imperative recover log */
        struct config_llog_data    *cld_nodemap;/* nodemap log */
-        struct obd_export          *cld_mgcexp;
+       struct config_llog_data    *cld_barrier;/* barrier log (for MDT only) */
+       struct obd_export          *cld_mgcexp;
        struct mutex                cld_lock;
-        int                         cld_type;
-        unsigned int                cld_stopping:1, /* we were told to stop
-                                                     * watching */
-                                    cld_lostlock:1; /* lock not requeued */
-        char                        cld_logname[0];
+       int                         cld_type;
+       unsigned int                cld_stopping:1, /* we were told to stop
+                                                    * watching */
+                                   cld_lostlock:1; /* lock not requeued */
+       char                        cld_logname[0];
 };
 
 struct lustre_profile {
@@ -315,8 +317,7 @@ void class_disconnect_stale_exports(struct obd_device *,
                                     int (*test_export)(struct obd_export *));
 static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
 {
-        return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
-                (obd->obd_force ? OBD_OPT_FORCE : 0) |
+        return ((obd->obd_force ? OBD_OPT_FORCE : 0) |
                 (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
                 0);
 }
@@ -431,77 +432,74 @@ do {                                                            \
 
 static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
 {
-        /* Always add in ldlm_stats */
-        tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
-                                                  ,LPROCFS_STATS_FLAG_NOPERCPU);
-        if (tmp->nid_ldlm_stats == NULL)
-                return -ENOMEM;
-
-        lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
-
-        return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
-                                      tmp->nid_ldlm_stats);
-}
-
-#define EXP_CHECK_MD_OP(exp, op)                                \
-do {                                                            \
-        if ((exp) == NULL) {                                    \
-                CERROR("obd_" #op ": NULL export\n");           \
-                RETURN(-ENODEV);                                \
-        }                                                       \
-        if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
-                CERROR("obd_" #op ": cleaned up obd\n");        \
-                RETURN(-EOPNOTSUPP);                            \
-        }                                                       \
-        if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) { \
-                CERROR("obd_" #op ": dev %s/%d no operation\n", \
-                       (exp)->exp_obd->obd_name,                \
-                       (exp)->exp_obd->obd_minor);              \
-                RETURN(-EOPNOTSUPP);                            \
-        }                                                       \
+       /* Always add in ldlm_stats */
+       tmp->nid_ldlm_stats =
+               lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC,
+                                   LPROCFS_STATS_FLAG_NOPERCPU);
+       if (tmp->nid_ldlm_stats == NULL)
+               return -ENOMEM;
+
+       lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
+
+       return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
+                                     tmp->nid_ldlm_stats);
+}
+
+#define EXP_CHECK_MD_OP(exp, op)                                       \
+do {                                                                   \
+       if ((exp) == NULL) {                                            \
+               CERROR("obd_" #op ": NULL export\n");                   \
+               RETURN(-ENODEV);                                        \
+       }                                                               \
+       if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {           \
+               CERROR("obd_" #op ": cleaned up obd\n");                \
+               RETURN(-EOPNOTSUPP);                                    \
+       }                                                               \
+       if (!OBT((exp)->exp_obd) || !MDP((exp)->exp_obd, op)) {         \
+               CERROR("%s: obd_" #op ": dev %d no operation\n",        \
+                      (exp)->exp_obd->obd_name,                        \
+                      (exp)->exp_obd->obd_minor);                      \
+               RETURN(-EOPNOTSUPP);                                    \
+       }                                                               \
 } while (0)
 
 
-#define OBD_CHECK_DT_OP(obd, op, err)                           \
-do {                                                            \
-        if (!OBT(obd) || !OBP((obd), op)) {                     \
-                if (err)                                        \
-                        CERROR("obd_" #op ": dev %d no operation\n",    \
-                               obd->obd_minor);                 \
-                RETURN(err);                                    \
-        }                                                       \
+#define OBD_CHECK_DT_OP(obd, op, err)                                  \
+do {                                                                   \
+       if (!OBT(obd) || !OBP((obd), op)) {                             \
+               if (err)                                                \
+                       CERROR("%s: no obd_" #op " operation\n",        \
+                              obd->obd_name);                          \
+               RETURN(err);                                            \
+       }                                                               \
 } while (0)
 
-#define EXP_CHECK_DT_OP(exp, op)                                \
-do {                                                            \
-        if ((exp) == NULL) {                                    \
-                CERROR("obd_" #op ": NULL export\n");           \
-                RETURN(-ENODEV);                                \
-        }                                                       \
-        if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {   \
-                CERROR("obd_" #op ": cleaned up obd\n");        \
-                RETURN(-EOPNOTSUPP);                            \
-        }                                                       \
-        if (!OBT((exp)->exp_obd) || !OBP((exp)->exp_obd, op)) { \
-                CERROR("obd_" #op ": dev %d no operation\n",    \
-                       (exp)->exp_obd->obd_minor);              \
-                RETURN(-EOPNOTSUPP);                            \
-        }                                                       \
+#define EXP_CHECK_DT_OP(exp, op)                                       \
+do {                                                                   \
+       if ((exp) == NULL) {                                            \
+               CERROR("obd_" #op ": NULL export\n");                   \
+               RETURN(-ENODEV);                                        \
+       }                                                               \
+       if ((exp)->exp_obd == NULL || !OBT((exp)->exp_obd)) {           \
+               CERROR("obd_" #op ": cleaned up obd\n");                \
+               RETURN(-EOPNOTSUPP);                                    \
+       }                                                               \
+       OBD_CHECK_DT_OP((exp)->exp_obd, op, -EOPNOTSUPP);               \
 } while (0)
 
-#define CTXT_CHECK_OP(ctxt, op, err)                                 \
-do {                                                                 \
-        if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {             \
-                if (err)                                             \
-                        CERROR("lop_" #op ": dev %d no operation\n", \
-                               ctxt->loc_obd->obd_minor);            \
-                RETURN(err);                                         \
-        }                                                            \
+#define CTXT_CHECK_OP(ctxt, op, err)                                   \
+do {                                                                   \
+       if (!OBT(ctxt->loc_obd) || !CTXTP((ctxt), op)) {                \
+               if (err)                                                \
+                       CERROR("%s: no lop_" #op "operation\n",         \
+                              ctxt->loc_obd->obd_name);                \
+               RETURN(err);                                            \
+       }                                                               \
 } while (0)
 
 static inline int class_devno_max(void)
 {
-        return MAX_OBD_DEVICES;
+       return MAX_OBD_DEVICES;
 }
 
 static inline int obd_get_info(const struct lu_env *env, struct obd_export *exp,
@@ -1012,13 +1010,12 @@ static inline int obd_statfs_async(struct obd_export *exp,
         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
         OBD_COUNTER_INCREMENT(obd, statfs);
 
-        CDEBUG(D_SUPER, "%s: osfs %p age "LPU64", max_age "LPU64"\n",
+       CDEBUG(D_SUPER, "%s: osfs %p age %llu, max_age %llu\n",
                obd->obd_name, &obd->obd_osfs, obd->obd_osfs_age, max_age);
         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
                 rc = OBP(obd, statfs_async)(exp, oinfo, max_age, rqset);
         } else {
-                CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
-                       " objects "LPU64"/"LPU64"\n",
+               CDEBUG(D_SUPER, "%s: use %p cache blocks %llu/%llu objects %llu/%llu\n",
                        obd->obd_name, &obd->obd_osfs,
                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
@@ -1075,7 +1072,7 @@ static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
         OBD_CHECK_DT_OP(obd, statfs, -EOPNOTSUPP);
         OBD_COUNTER_INCREMENT(obd, statfs);
 
-        CDEBUG(D_SUPER, "osfs "LPU64", max_age "LPU64"\n",
+       CDEBUG(D_SUPER, "osfs %llu, max_age %llu\n",
                obd->obd_osfs_age, max_age);
         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
@@ -1086,8 +1083,8 @@ static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
                        spin_unlock(&obd->obd_osfs_lock);
                }
        } else {
-               CDEBUG(D_SUPER, "%s: use %p cache blocks "LPU64"/"LPU64
-                      " objects "LPU64"/"LPU64"\n",
+               CDEBUG(D_SUPER, "%s: use %p cache blocks %llu/%llu"
+                      " objects %llu/%llu\n",
                       obd->obd_name, &obd->obd_osfs,
                       obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
                       obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
@@ -1162,54 +1159,48 @@ static inline void obd_import_event(struct obd_device *obd,
 }
 
 static inline int obd_notify(struct obd_device *obd,
-                             struct obd_device *watched,
-                             enum obd_notify_event ev,
-                             void *data)
+                            struct obd_device *watched,
+                            enum obd_notify_event ev)
 {
-        int rc;
-        ENTRY;
-        OBD_CHECK_DEV(obd);
+       int rc;
+       ENTRY;
+       OBD_CHECK_DEV(obd);
 
        if (!obd->obd_set_up) {
-                CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
-                RETURN(-EINVAL);
-        }
+               CDEBUG(D_HA, "obd %s not set up\n", obd->obd_name);
+               RETURN(-EINVAL);
+       }
 
-        if (!OBP(obd, notify)) {
-                CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
-                RETURN(-ENOSYS);
-        }
+       if (!OBP(obd, notify)) {
+               CDEBUG(D_HA, "obd %s has no notify handler\n", obd->obd_name);
+               RETURN(-ENOSYS);
+       }
 
-        OBD_COUNTER_INCREMENT(obd, notify);
-        rc = OBP(obd, notify)(obd, watched, ev, data);
-        RETURN(rc);
+       OBD_COUNTER_INCREMENT(obd, notify);
+       rc = OBP(obd, notify)(obd, watched, ev);
+
+       RETURN(rc);
 }
 
 static inline int obd_notify_observer(struct obd_device *observer,
-                                      struct obd_device *observed,
-                                      enum obd_notify_event ev,
-                                      void *data)
+                                     struct obd_device *observed,
+                                     enum obd_notify_event ev)
 {
-        int rc1;
-        int rc2;
+       int rc = 0;
+       int rc2 = 0;
+       struct obd_notify_upcall *onu;
 
-        struct obd_notify_upcall *onu;
+       if (observer->obd_observer)
+               rc = obd_notify(observer->obd_observer, observed, ev);
 
-        if (observer->obd_observer)
-                rc1 = obd_notify(observer->obd_observer, observed, ev, data);
-        else
-                rc1 = 0;
-        /*
-         * Also, call non-obd listener, if any
-         */
-        onu = &observer->obd_upcall;
-        if (onu->onu_upcall != NULL)
-                rc2 = onu->onu_upcall(observer, observed, ev,
-                                      onu->onu_owner, NULL);
-        else
-                rc2 = 0;
+       /*
+        * Also, call non-obd listener, if any
+        */
+       onu = &observer->obd_upcall;
+       if (onu->onu_upcall != NULL)
+               rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
 
-        return rc1 ? rc1 : rc2;
+       return rc ? rc : rc2;
 }
 
 static inline int obd_quotactl(struct obd_export *exp,
@@ -1332,7 +1323,6 @@ static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
 static inline int md_enqueue(struct obd_export *exp,
                             struct ldlm_enqueue_info *einfo,
                             const union ldlm_policy_data *policy,
-                            struct lookup_intent *it,
                             struct md_op_data *op_data,
                             struct lustre_handle *lockh,
                             __u64 extra_lock_flags)
@@ -1341,7 +1331,7 @@ static inline int md_enqueue(struct obd_export *exp,
        ENTRY;
        EXP_CHECK_MD_OP(exp, enqueue);
        EXP_MD_COUNTER_INCREMENT(exp, enqueue);
-       rc = MDP(exp->exp_obd, enqueue)(exp, einfo, policy, it, op_data, lockh,
+       rc = MDP(exp->exp_obd, enqueue)(exp, einfo, policy, op_data, lockh,
                                        extra_lock_flags);
         RETURN(rc);
 }
@@ -1529,7 +1519,8 @@ static inline int md_clear_open_replay_data(struct obd_export *exp,
 }
 
 static inline int md_set_lock_data(struct obd_export *exp,
-                                   __u64 *lockh, void *data, __u64 *bits)
+                                  const struct lustre_handle *lockh,
+                                  void *data, __u64 *bits)
 {
         ENTRY;
         EXP_CHECK_MD_OP(exp, set_lock_data);
@@ -1576,17 +1567,6 @@ static inline int md_init_ea_size(struct obd_export *exp, __u32 ea_size,
        RETURN(MDP(exp->exp_obd, init_ea_size)(exp, ea_size, def_ea_size));
 }
 
-static inline int md_get_remote_perm(struct obd_export *exp,
-                                    const struct lu_fid *fid, u32 suppgid,
-                                    struct ptlrpc_request **request)
-{
-       ENTRY;
-       EXP_CHECK_MD_OP(exp, get_remote_perm);
-       EXP_MD_COUNTER_INCREMENT(exp, get_remote_perm);
-
-       RETURN(MDP(exp->exp_obd, get_remote_perm)(exp, fid, suppgid, request));
-}
-
 static inline int md_intent_getattr_async(struct obd_export *exp,
                                          struct md_enqueue_info *minfo)
 {
@@ -1692,8 +1672,8 @@ int lustre_unregister_fs(void);
 int lustre_check_exclusion(struct super_block *sb, char *svname);
 
 /* sysctl.c */
-extern void obd_sysctl_init (void);
-extern void obd_sysctl_clean (void);
+extern int obd_sysctl_init(void);
+extern void obd_sysctl_clean(void);
 
 /* uuid.c  */
 typedef __u8 class_uuid_t[16];
@@ -1704,8 +1684,6 @@ int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
 int class_add_uuid(const char *uuid, __u64 nid);
 int class_del_uuid (const char *uuid);
 int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
-void class_init_uuidlist(void);
-void class_exit_uuidlist(void);
 
 /* class_obd.c */
 extern char obd_jobid_node[];
@@ -1731,6 +1709,7 @@ int server_name2index(const char *svname, __u32 *idx, const char **endptr);
 
 /* linux-module.c */
 extern struct miscdevice obd_psdev;
+int obd_ioctl_getdata(char **buf, int *len, void __user *arg);
 int class_procfs_init(void);
 int class_procfs_clean(void);