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[fs/lustre-release.git] / lustre / include / obd.h
index 553f2ca..b42e2c3 100644 (file)
@@ -1,5 +1,37 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
 #ifndef __OBD_H
@@ -29,6 +61,7 @@
 
 #include <lustre/lustre_idl.h>
 #include <lu_object.h>
+#include <lu_ref.h>
 #include <lustre_lib.h>
 #include <lustre_export.h>
 #include <lustre_quota.h>
@@ -75,6 +108,12 @@ struct lov_oinfo {                 /* per-stripe data structure */
         struct osc_async_rc     loi_ar;
 };
 
+static inline void loi_kms_set(struct lov_oinfo *oinfo, __u64 kms)
+{
+        oinfo->loi_kms = kms;
+        oinfo->loi_kms_valid = 1;
+}
+
 static inline void loi_init(struct lov_oinfo *loi)
 {
         CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending);
@@ -118,6 +157,7 @@ struct lov_stripe_md {
                 __u32 lw_stripe_size;      /* size of the stripe */
                 __u32 lw_pattern;          /* striping pattern (RAID0, RAID1) */
                 unsigned lw_stripe_count;  /* number of objects being striped over */
+                char  lw_pool_name[LOV_MAXPOOLNAME]; /* pool name */
         } lsm_wire;
 
         struct lov_array_info *lsm_array; /*Only for joined file array info*/
@@ -131,6 +171,7 @@ struct lov_stripe_md {
 #define lsm_stripe_size  lsm_wire.lw_stripe_size
 #define lsm_pattern      lsm_wire.lw_pattern
 #define lsm_stripe_count lsm_wire.lw_stripe_count
+#define lsm_pool_name    lsm_wire.lw_pool_name
 
 struct obd_info;
 
@@ -322,6 +363,8 @@ struct filter_obd {
         obd_size             fo_tot_pending;
 
         obd_size             fo_readcache_max_filesize;
+        int                  fo_read_cache;
+        int                  fo_writethrough_cache;
 
         struct obd_import   *fo_mdc_imp;
         struct obd_uuid      fo_mdc_uuid;
@@ -369,8 +412,7 @@ struct filter_obd {
         unsigned int             fo_fl_oss_capa;
         struct list_head         fo_capa_keys;
         struct hlist_head       *fo_capa_hash;
-
-        void                    *fo_lcm;
+        struct llog_commit_master *fo_lcm;
 };
 
 #define OSC_MAX_RIF_DEFAULT       8
@@ -468,7 +510,7 @@ struct client_obd {
         __u32                    cl_supp_cksum_types;
         /* checksum algorithm to be used */
         cksum_type_t             cl_cksum_type;
+
         /* also protected by the poorly named _loi_list_lock lock above */
         struct osc_async_rc      cl_ar;
 
@@ -618,15 +660,32 @@ struct ltd_qos {
         unsigned int        ltq_usable:1;    /* usable for striping */
 };
 
+/* Generic subset of OSTs */
+struct ost_pool {
+        __u32              *op_array;        /* array of index of
+                                                lov_obd->lov_tgts */
+        unsigned int        op_count;        /* number of OSTs in the array */
+        unsigned int        op_size;         /* allocated size of lp_array */
+        rwlock_t            op_rwlock;       /* to protect lov_pool use */
+};
+
+/* Round-robin allocator data */
+struct lov_qos_rr {
+        __u32               lqr_start_idx;   /* start index of new inode */
+        __u32               lqr_offset_idx;  /* aliasing for start_idx  */
+        int                 lqr_start_count; /* reseed counter */
+        struct ost_pool     lqr_pool;        /* round-robin optimized list */
+        unsigned long       lqr_dirty:1;     /* recalc round-robin list */
+};
+
+/* Stripe placement optimization */
 struct lov_qos {
         struct list_head    lq_oss_list;    /* list of OSSs that targets use */
         struct rw_semaphore lq_rw_sem;
         __u32               lq_active_oss_count;
-        __u32              *lq_rr_array;    /* round-robin optimized list */
-        unsigned int        lq_rr_size;     /* rr array size */
         unsigned int        lq_prio_free;   /* priority for free space */
+        struct lov_qos_rr   lq_rr;          /* round robin qos data */
         unsigned long       lq_dirty:1,     /* recalc qos data */
-                            lq_dirty_rr:1,  /* recalc round-robin list */
                             lq_same_space:1,/* the ost's all have approx.
                                                the same space avail */
                             lq_reset:1;     /* zero current penalties */
@@ -643,9 +702,29 @@ struct lov_tgt_desc {
                             ltd_reap:1;  /* should this target be deleted */
 };
 
+/* Pool metadata */
+#define pool_tgt_size(_p)   _p->pool_obds.op_size
+#define pool_tgt_count(_p)  _p->pool_obds.op_count
+#define pool_tgt_array(_p)  _p->pool_obds.op_array
+#define pool_tgt_rwlock(_p) _p->pool_obds.op_rwlock
+#define pool_tgt(_p, _i)    _p->pool_lov->lov_tgts[_p->pool_obds.op_array[_i]]
+
+struct pool_desc {
+        char                  pool_name[LOV_MAXPOOLNAME + 1]; /* name of pool */
+        struct ost_pool       pool_obds;              /* pool members */
+        struct lov_qos_rr     pool_rr;                /* round robin qos */
+        struct hlist_node     pool_hash;              /* access by poolname */
+        struct list_head      pool_list;              /* serial access */
+        cfs_proc_dir_entry_t *pool_proc_entry;        /* file in /proc */
+        struct lov_obd       *pool_lov;               /* lov obd to which this
+                                                         pool belong */
+};
+
 struct lov_obd {
         struct lov_desc         desc;
-        struct lov_tgt_desc   **lov_tgts;
+        struct lov_tgt_desc   **lov_tgts;              /* sparse array */
+        struct ost_pool         lov_packed;            /* all OSTs in a packed
+                                                          array */
         struct semaphore        lov_lock;
         struct obd_connect_data lov_ocd;
         struct lov_qos          lov_qos;               /* qos info per lov */
@@ -654,13 +733,14 @@ struct lov_obd {
         __u32                   lov_active_tgt_count;  /* how many active */
         __u32                   lov_death_row;/* tgts scheduled to be deleted */
         __u32                   lov_tgt_size;   /* size of tgts array */
-        __u32                   lov_start_idx;  /* start index of new inode */
-        __u32                   lov_offset_idx; /* aliasing for start_idx  */
-        int                     lov_start_count;/* reseed counter */
         int                     lov_connects;
         obd_page_removal_cb_t   lov_page_removal_cb;
         obd_pin_extent_cb       lov_page_pin_cb;
         obd_lock_cancel_cb      lov_lock_cancel_cb;
+        int                     lov_pool_count;
+        lustre_hash_t          *lov_pools_hash_body; /* used for key access */
+        struct list_head        lov_pool_list; /* used for sequential access */
+        cfs_proc_dir_entry_t   *lov_pool_proc_entry;
 };
 
 struct lmv_tgt_desc {
@@ -671,10 +751,20 @@ struct lmv_tgt_desc {
         struct semaphore        ltd_fid_sem;
 };
 
+enum placement_policy {
+        PLACEMENT_CHAR_POLICY   = 0,
+        PLACEMENT_NID_POLICY    = 1,
+        PLACEMENT_INVAL_POLICY  = 2,
+        PLACEMENT_MAX_POLICY
+};
+
+typedef enum placement_policy placement_policy_t;
+
 struct lmv_obd {
         int                     refcount;
         struct lu_client_fld    lmv_fld;
         spinlock_t              lmv_lock;
+        placement_policy_t      lmv_placement;
         struct lmv_desc         desc;
         struct obd_uuid         cluuid;
         struct obd_export       *exp;
@@ -755,6 +845,8 @@ struct obd_trans_info {
         /* initial thread handling transaction */
         int                      oti_thread_id;
         __u32                    oti_conn_cnt;
+
+        struct obd_uuid         *oti_ost_uuid;
 };
 
 static inline void oti_init(struct obd_trans_info *oti,
@@ -847,8 +939,6 @@ struct target_recovery_data {
         struct completion trd_finishing;
 };
 
-#define OBD_LLOG_GROUP  0
-
 enum filter_groups {
         FILTER_GROUP_LLOG = 1,
         FILTER_GROUP_ECHO,
@@ -863,6 +953,7 @@ struct obd_llog_group {
         spinlock_t         olg_lock;
         struct obd_export *olg_exp;
         int                olg_initializing;
+        struct semaphore   olg_cat_processing;
 };
 
 /* corresponds to one of the obd's */
@@ -896,11 +987,11 @@ struct obd_device {
                       obd_inactive:1;      /* device active/inactive
                                            * (for /proc/status only!!) */
         /* uuid-export hash body */
-        struct lustre_class_hash_body *obd_uuid_hash_body;
+        struct lustre_hash     *obd_uuid_hash;
         /* nid-export hash body */
-        struct lustre_class_hash_body *obd_nid_hash_body;
+        struct lustre_hash     *obd_nid_hash;
         /* nid stats body */
-        struct lustre_class_hash_body *obd_nid_stats_hash_body;
+        struct lustre_hash     *obd_nid_stats_hash;
         struct list_head        obd_nid_stats;
         atomic_t                obd_refcount;
         cfs_waitq_t             obd_refcount_waitq;
@@ -929,7 +1020,7 @@ struct obd_device {
         /* XXX encapsulate all this recovery data into one struct */
         svc_handler_t                    obd_recovery_handler;
         pid_t                            obd_processing_task;
-        
+
         int                              obd_max_recoverable_clients;
         int                              obd_connected_clients;
         int                              obd_recoverable_clients;
@@ -945,7 +1036,7 @@ struct obd_device {
         time_t                           obd_recovery_end; /* seconds, for lprocfs_status */
         time_t                           obd_recovery_max_time; /* seconds, bz13079 */
         int                              obd_recovery_timeout;
-        
+
         /* new recovery stuff from CMD2 */
         struct target_recovery_data      obd_recovery_data;
         int                              obd_replayed_locks;
@@ -982,12 +1073,18 @@ struct obd_device {
         atomic_t               obd_evict_inprogress;
         cfs_waitq_t            obd_evict_inprogress_waitq;
 
-        /** 
-         * Ldlm pool part. Save last calculated SLV and Limit. 
+        /**
+         * Ldlm pool part. Save last calculated SLV and Limit.
          */
         rwlock_t               obd_pool_lock;
         int                    obd_pool_limit;
         __u64                  obd_pool_slv;
+
+        /**
+         * A list of outstanding class_incref()'s against this obd. For
+         * debugging.
+         */
+        struct lu_ref          obd_reference;
 };
 
 #define OBD_OPT_FORCE           0x0001
@@ -1026,6 +1123,7 @@ enum obd_cleanup_stage {
 #define KEY_CLEAR_FS            "clear_fs"
 #define KEY_BLOCKSIZE           "blocksize"
 #define KEY_BLOCKSIZE_BITS      "blocksize_bits"
+#define KEY_FIEMAP              "FIEMAP"
 /* XXX unused ?*/
 #define KEY_INTERMDS            "inter_mds"
 #define KEY_ASYNC               "async"
@@ -1039,7 +1137,7 @@ static inline int it_to_lock_mode(struct lookup_intent *it)
                 return LCK_CW;
         else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP))
                 return LCK_CR;
+
         LASSERTF(0, "Invalid it_op: %d\n", it->it_op);
         return -EINVAL;
 }
@@ -1060,7 +1158,7 @@ struct md_op_data {
         __u32                   op_suppgids[2];
         __u32                   op_fsuid;
         __u32                   op_fsgid;
-        __u32                   op_cap;
+        cfs_cap_t               op_cap;
         void                   *op_data;
 
         /* iattr fields and blocks. */
@@ -1108,7 +1206,7 @@ struct obd_ops {
         int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
                            void *karg, void *uarg);
         int (*o_get_info)(struct obd_export *, __u32 keylen, void *key,
-                          __u32 *vallen, void *val);
+                          __u32 *vallen, void *val, struct lov_stripe_md *lsm);
         int (*o_set_info_async)(struct obd_export *, __u32 keylen, void *key,
                                 __u32 vallen, void *val,
                                 struct ptlrpc_request_set *set);
@@ -1135,7 +1233,8 @@ struct obd_ops {
         int (*o_reconnect)(const struct lu_env *env,
                            struct obd_export *exp, struct obd_device *src,
                            struct obd_uuid *cluuid,
-                           struct obd_connect_data *ocd);
+                           struct obd_connect_data *ocd,
+                           void *localdata);
         int (*o_disconnect)(struct obd_export *exp);
 
         /* Initialize/finalize fids infrastructure. */
@@ -1146,7 +1245,7 @@ struct obd_ops {
         int (*o_fid_alloc)(struct obd_export *exp, struct lu_fid *fid,
                            struct md_op_data *op_data);
 
-        /* 
+        /*
          * Object with @fid is getting deleted, we may want to do something
          * about this.
          */
@@ -1244,12 +1343,14 @@ struct obd_ops {
                          obd_id *startid, obd_gr group, void *data);
         int (*o_preprw)(int cmd, struct obd_export *exp, struct obdo *oa,
                         int objcount, struct obd_ioobj *obj,
-                        int niocount, struct niobuf_remote *remote,
-                        struct niobuf_local *local, struct obd_trans_info *oti,
+                        struct niobuf_remote *remote, int *nr_pages,
+                        struct niobuf_local *local,
+                        struct obd_trans_info *oti,
                         struct lustre_capa *capa);
         int (*o_commitrw)(int cmd, struct obd_export *exp, struct obdo *oa,
                           int objcount, struct obd_ioobj *obj,
-                          int niocount, struct niobuf_local *local,
+                          struct niobuf_remote *remote, int pages,
+                          struct niobuf_local *local,
                           struct obd_trans_info *oti, int rc);
         int (*o_enqueue)(struct obd_export *, struct obd_info *oinfo,
                          struct ldlm_enqueue_info *einfo,
@@ -1263,8 +1364,6 @@ struct obd_ops {
                         __u32 mode, struct lustre_handle *);
         int (*o_cancel_unused)(struct obd_export *, struct lov_stripe_md *,
                                int flags, void *opaque);
-        int (*o_join_lru)(struct obd_export *, struct lov_stripe_md *,
-                         int join);
         int (*o_init_export)(struct obd_export *exp);
         int (*o_destroy_export)(struct obd_export *exp);
         int (*o_extent_calc)(struct obd_export *, struct lov_stripe_md *,
@@ -1289,6 +1388,7 @@ struct obd_ops {
                         enum obd_notify_event ev, void *data);
 
         int (*o_health_check)(struct obd_device *);
+        struct obd_uuid *(*o_get_uuid) (struct obd_export *exp);
 
         /* quota methods */
         int (*o_quotacheck)(struct obd_export *, struct obd_quotactl *);
@@ -1305,7 +1405,13 @@ struct obd_ops {
                                        obd_lock_cancel_cb cb);
         int (*o_unregister_lock_cancel_cb)(struct obd_export *exp,
                                          obd_lock_cancel_cb cb);
-
+        /* pools methods */
+        int (*o_pool_new)(struct obd_device *obd, char *poolname);
+        int (*o_pool_del)(struct obd_device *obd, char *poolname);
+        int (*o_pool_add)(struct obd_device *obd, char *poolname,
+                          char *ostname);
+        int (*o_pool_rem)(struct obd_device *obd, char *poolname,
+                          char *ostname);
         /*
          * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
          * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
@@ -1336,7 +1442,7 @@ enum {
 
 #define MAX_HASH_SIZE_32         0x7fffffffUL
 #define MAX_HASH_SIZE            0x7fffffffffffffffULL
-#define MAX_HASH_HIGHEST_BIT     0x1000000000000000
+#define MAX_HASH_HIGHEST_BIT     0x1000000000000000ULL
 
 struct lustre_md {
         struct mdt_body         *body;
@@ -1365,13 +1471,14 @@ struct md_ops {
         int (*m_close)(struct obd_export *, struct md_op_data *,
                        struct md_open_data *, struct ptlrpc_request **);
         int (*m_create)(struct obd_export *, struct md_op_data *,
-                        const void *, int, int, __u32, __u32, __u32,
+                        const void *, int, int, __u32, __u32, cfs_cap_t,
                         __u64, struct ptlrpc_request **);
         int (*m_done_writing)(struct obd_export *, struct md_op_data  *,
                               struct md_open_data *);
         int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *,
                          struct lookup_intent *, struct md_op_data *,
-                         struct lustre_handle *, void *, int, int);
+                         struct lustre_handle *, void *, int,
+                         struct ptlrpc_request **, int);
         int (*m_getattr)(struct obd_export *, const struct lu_fid *,
                          struct obd_capa *, obd_valid, int,
                          struct ptlrpc_request **);
@@ -1475,15 +1582,18 @@ struct lsm_operations {
                              struct lov_mds_md *lmm);
 };
 
-extern struct lsm_operations lsm_plain_ops;
-extern struct lsm_operations lsm_join_ops;
-static inline struct lsm_operations *lsm_op_find(int magic)
+extern const struct lsm_operations lsm_v1_ops;
+extern const struct lsm_operations lsm_join_ops;
+extern const struct lsm_operations lsm_v3_ops;
+static inline const struct lsm_operations *lsm_op_find(int magic)
 {
         switch(magic) {
-        case LOV_MAGIC:
-               return &lsm_plain_ops;
+        case LOV_MAGIC_V1:
+               return &lsm_v1_ops;
         case LOV_MAGIC_JOIN:
                return &lsm_join_ops;
+        case LOV_MAGIC_V3:
+               return &lsm_v3_ops;
         default:
                CERROR("Cannot recognize lsm_magic %d\n", magic);
                return NULL;
@@ -1504,11 +1614,14 @@ static inline void obd_transno_commit_cb(struct obd_device *obd, __u64 transno,
                        obd->obd_name, transno, error);
                 return;
         }
-        CDEBUG(D_HA, "%s: transno "LPU64" committed\n",
-               obd->obd_name, transno);
         if (transno > obd->obd_last_committed) {
+                CDEBUG(D_HA, "%s: transno "LPD64" committed\n",
+                       obd->obd_name, transno);
                 obd->obd_last_committed = transno;
                 ptlrpc_commit_replies (obd);
+        } else {
+                CDEBUG(D_INFO, "%s: transno "LPD64" committed\n",
+                       obd->obd_name, transno);
         }
 }