LU-5223 lmv: build master LMV EA dynamically build via readdir

[fs/lustre-release.git] / lustre / lod / lod_internal.h

diff --git a/lustre/lod/lod_internal.h b/lustre/lod/lod_internal.h
index bc6283f..7d9b95f 100644 (file)
--- a/lustre/lod/lod_internal.h
+++ b/lustre/lod/lod_internal.h
@@ -22,6 +22,8 @@
 /*
  * Copyright  2009 Sun Microsystems, Inc. All rights reserved
  * Use is subject to license terms.
 /*
  * Copyright  2009 Sun Microsystems, Inc. All rights reserved
  * Use is subject to license terms.

+ *
+ * Copyright (c) 2012, 2013, Intel Corporation.

  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/


@@ -43,8 +45,66 @@
 #define LOV_USES_ASSIGNED_STRIPE        0
 #define LOV_USES_DEFAULT_STRIPE         1
 
 #define LOV_USES_ASSIGNED_STRIPE        0
 #define LOV_USES_DEFAULT_STRIPE         1
 

-struct lod_ost_desc {
-       struct dt_device  *ltd_ost;
+struct lod_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 */
+};
+
+struct pool_desc {
+       char                     pool_name[LOV_MAXPOOLNAME + 1];
+       struct ost_pool          pool_obds;     /* pool members */
+       atomic_t                 pool_refcount;
+       struct lod_qos_rr        pool_rr;
+       cfs_hlist_node_t         pool_hash;     /* access by poolname */
+       struct list_head         pool_list;
+       struct proc_dir_entry   *pool_proc_entry;
+       struct obd_device       *pool_lobd;     /* owner */
+};
+
+#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_rw_sem(p) ((p)->pool_obds.op_rw_sem)
+
+struct lod_qos {
+       struct list_head         lq_oss_list;
+       struct rw_semaphore      lq_rw_sem;
+       __u32                    lq_active_oss_count;
+       unsigned int             lq_prio_free;   /* priority for free space */
+       unsigned int             lq_threshold_rr;/* priority for rr */
+       struct lod_qos_rr        lq_rr;          /* round robin qos data */
+       bool                     lq_dirty:1,     /* recalc qos data */
+                                lq_same_space:1,/* the ost's all have approx.
+                                                   the same space avail */
+                                lq_reset:1;     /* zero current penalties */
+};
+
+struct lod_qos_oss {
+       struct obd_uuid          lqo_uuid;      /* ptlrpc's c_remote_uuid */
+       struct list_head         lqo_oss_list;  /* link to lov_qos */
+       __u64                    lqo_bavail;    /* total bytes avail on OSS */
+       __u64                    lqo_penalty;   /* current penalty */
+       __u64                    lqo_penalty_per_obj; /* penalty decrease
+                                                        every obj*/
+       time_t                   lqo_used;      /* last used time, seconds */
+       __u32                    lqo_ost_count; /* number of osts on this oss */
+};
+
+struct ltd_qos {
+       struct lod_qos_oss      *ltq_oss;       /* oss info */
+       __u64                    ltq_penalty;   /* current penalty */
+       __u64                    ltq_penalty_per_obj; /* penalty decrease
+                                                        every obj*/
+       __u64                    ltq_weight;    /* net weighting */
+       time_t                   ltq_used;      /* last used time, seconds */
+       bool                     ltq_usable:1;  /* usable for striping */
+};
+
+struct lod_tgt_desc {
+       struct dt_device  *ltd_tgt;

        struct list_head   ltd_kill;
        struct obd_export *ltd_exp;
        struct obd_uuid    ltd_uuid;
        struct list_head   ltd_kill;
        struct obd_export *ltd_exp;
        struct obd_uuid    ltd_uuid;


@@ -57,16 +117,37 @@ struct lod_ost_desc {
                           ltd_reap:1;  /* should this target be deleted */
 };
 
                           ltd_reap:1;  /* should this target be deleted */
 };
 

-#define OST_PTRS                256     /* number of pointers at 1st level */
-#define OST_PTRS_PER_BLOCK      256     /* number of pointers at 2nd level */
+#define TGT_PTRS               256     /* number of pointers at 1st level */
+#define TGT_PTRS_PER_BLOCK      256     /* number of pointers at 2nd level */

 
 

-struct lod_ost_desc_idx {
-       struct lod_ost_desc *ldi_ost[OST_PTRS_PER_BLOCK];
+struct lod_tgt_desc_idx {
+       struct lod_tgt_desc *ldi_tgt[TGT_PTRS_PER_BLOCK];

 };
 
 };
 

-#define OST_TGT(dev,index)      \
-       ((dev)->lod_ost_idx[(index) / \
-       OST_PTRS_PER_BLOCK]->ldi_ost[(index)%OST_PTRS_PER_BLOCK])
+#define LTD_TGT(ltd, index)      \
+        ((ltd)->ltd_tgt_idx[(index) / \
+        TGT_PTRS_PER_BLOCK]->ldi_tgt[(index) % TGT_PTRS_PER_BLOCK])
+
+#define OST_TGT(lod, index)   LTD_TGT(&lod->lod_ost_descs, index)
+#define MDT_TGT(lod, index)   LTD_TGT(&lod->lod_mdt_descs, index)
+struct lod_tgt_descs {
+       /* list of known TGTs */
+       struct lod_tgt_desc_idx *ltd_tgt_idx[TGT_PTRS];
+       /* Size of the lod_tgts array, granted to be a power of 2 */
+       __u32                   ltd_tgts_size;
+       /* number of registered TGTs */
+       int                     ltd_tgtnr;
+       /* bitmap of TGTs available */
+       cfs_bitmap_t            *ltd_tgt_bitmap;
+       /* TGTs scheduled to be deleted */
+       __u32                   ltd_death_row;
+       /* Table refcount used for delayed deletion */
+       int                     ltd_refcount;
+       /* mutex to serialize concurrent updates to the tgt table */
+       struct mutex            ltd_mutex;
+       /* read/write semaphore used for array relocation */
+       struct rw_semaphore     ltd_rw_sem;
+};

 
 struct lod_device {
        struct dt_device      lod_dt_dev;
 
 struct lod_device {
        struct dt_device      lod_dt_dev;


@@ -74,39 +155,31 @@ struct lod_device {
        struct dt_device     *lod_child;
        cfs_proc_dir_entry_t *lod_proc_entry;
        struct lprocfs_stats *lod_stats;
        struct dt_device     *lod_child;
        cfs_proc_dir_entry_t *lod_proc_entry;
        struct lprocfs_stats *lod_stats;

+       spinlock_t            lod_connects_lock;

        int                   lod_connects;
        int                   lod_connects;

-       int                   lod_recovery_completed;
+       unsigned int          lod_recovery_completed:1,
+                             lod_initialized:1,
+                             lod_lmv_failout:1;

 
        /* lov settings descriptor storing static information */
        struct lov_desc       lod_desc;
 
        /* use to protect ld_active_tgt_count and all ltd_active */
 
        /* lov settings descriptor storing static information */
        struct lov_desc       lod_desc;
 
        /* use to protect ld_active_tgt_count and all ltd_active */

-       cfs_spinlock_t        lod_desc_lock;
+       spinlock_t           lod_desc_lock;

 
 

-       /* list of known OSTs */
-       struct lod_ost_desc_idx *lod_ost_idx[OST_PTRS];
-
-       /* Size of the lod_osts array, granted to be a power of 2 */
-       __u32                 lod_osts_size;
-       /* number of registered OSTs */
-       int                   lod_ostnr;
-       /* OSTs scheduled to be deleted */
-       __u32                 lod_death_row;
-       /* bitmap of OSTs available */
-       cfs_bitmap_t         *lod_ost_bitmap;
+       /* Description of OST */
+       struct lod_tgt_descs  lod_ost_descs;
+       /* Description of MDT */
+       struct lod_tgt_descs  lod_mdt_descs;

 
        /* maximum EA size underlied OSD may have */
        unsigned int          lod_osd_max_easize;
 
 
        /* maximum EA size underlied OSD may have */
        unsigned int          lod_osd_max_easize;
 

-       /* Table refcount used for delayed deletion */
-       int                   lod_refcount;
-       /* mutex to serialize concurrent updates to the ost table */
-       cfs_mutex_t           lod_mutex;
-       /* read/write semaphore used for array relocation */
-       cfs_rw_semaphore_t    lod_rw_sem;
-
+       /*FIXME: When QOS and pool is implemented for MDT, probably these
+        * structure should be moved to lod_tgt_descs as well.
+        */

        /* QoS info per LOD */
        /* QoS info per LOD */

-       struct lov_qos        lod_qos; /* qos info per lod */
+       struct lod_qos        lod_qos; /* qos info per lod */

 
        /* OST pool data */
        struct ost_pool       lod_pool_info; /* all OSTs in a packed array */
 
        /* OST pool data */
        struct ost_pool       lod_pool_info; /* all OSTs in a packed array */


@@ -120,6 +193,32 @@ struct lod_device {
        cfs_proc_dir_entry_t *lod_symlink;
 };
 
        cfs_proc_dir_entry_t *lod_symlink;
 };
 

+#define lod_osts       lod_ost_descs.ltd_tgts
+#define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap
+#define lod_ostnr      lod_ost_descs.ltd_tgtnr
+#define lod_osts_size  lod_ost_descs.ltd_tgts_size
+#define ltd_ost                ltd_tgt
+#define lod_ost_desc   lod_tgt_desc
+
+#define lod_mdts               lod_mdt_descs.ltd_tgts
+#define lod_mdt_bitmap         lod_mdt_descs.ltd_tgt_bitmap
+#define lod_remote_mdt_count   lod_mdt_descs.ltd_tgtnr
+#define lod_mdts_size          lod_mdt_descs.ltd_tgts_size
+#define ltd_mdt                        ltd_tgt
+#define lod_mdt_desc           lod_tgt_desc
+
+struct lod_dir_stripe_info {
+       __u32   ldsi_stripe_offset;
+       __u32   ldsi_def_stripenr;
+       __u32   ldsi_def_stripe_offset;
+       __u32   ldsi_def_hash_type;
+       __u32   ldsi_hash_type;
+
+       unsigned int ldsi_striping_cached:1,
+                    ldsi_def_striping_set:1,
+                    ldsi_striped:1;
+};
+

 /*
  * XXX: shrink this structure, currently it's 72bytes on 32bit arch,
  *      so, slab will be allocating 128bytes
 /*
  * XXX: shrink this structure, currently it's 72bytes on 32bit arch,
  *      so, slab will be allocating 128bytes


@@ -128,32 +227,63 @@ struct lod_object {
        struct dt_object   ldo_obj;
 
        /* if object is striped, then the next fields describe stripes */
        struct dt_object   ldo_obj;
 
        /* if object is striped, then the next fields describe stripes */

+       /* For striped directory, ldo_stripenr == slave stripe count */

        __u16              ldo_stripenr;
        __u16              ldo_layout_gen;
        __u32              ldo_stripe_size;
        __u16              ldo_stripenr;
        __u16              ldo_layout_gen;
        __u32              ldo_stripe_size;

+       __u32              ldo_pattern;
+       __u16              ldo_released_stripenr;

        char              *ldo_pool;
        struct dt_object **ldo_stripe;
        /* to know how much memory to free, ldo_stripenr can be less */
        char              *ldo_pool;
        struct dt_object **ldo_stripe;
        /* to know how much memory to free, ldo_stripenr can be less */

-       int                ldo_stripes_allocated;

        /* default striping for directory represented by this object
         * is cached in stripenr/stripe_size */
        /* default striping for directory represented by this object
         * is cached in stripenr/stripe_size */

-       int                ldo_striping_cached:1;
-       int                ldo_def_striping_set:1;
+       unsigned int       ldo_stripes_allocated:16,
+                          ldo_striping_cached:1,
+                          ldo_def_striping_set:1,
+       /* ldo_dir_slave_stripe indicate this is a slave stripe of
+        * a striped dir */
+                          ldo_dir_slave_stripe:1;

        __u32              ldo_def_stripe_size;
        __u16              ldo_def_stripenr;
        __u16              ldo_def_stripe_offset;
        __u32              ldo_def_stripe_size;
        __u16              ldo_def_stripenr;
        __u16              ldo_def_stripe_offset;

+       struct lod_dir_stripe_info      *ldo_dir_stripe;

 };
 
 };
 

+#define ldo_dir_stripe_offset  ldo_dir_stripe->ldsi_stripe_offset
+#define ldo_dir_def_stripenr   ldo_dir_stripe->ldsi_def_stripenr
+#define ldo_dir_hash_type      ldo_dir_stripe->ldsi_hash_type
+#define ldo_dir_def_hash_type  ldo_dir_stripe->ldsi_def_hash_type
+#define ldo_dir_striping_cached        ldo_dir_stripe->ldsi_striping_cached
+#define ldo_dir_striped                ldo_dir_stripe->ldsi_striped
+#define ldo_dir_def_striping_set       ldo_dir_stripe->ldsi_def_striping_set
+#define ldo_dir_def_stripe_offset      ldo_dir_stripe->ldsi_def_stripe_offset
+
+struct lod_it {
+       struct dt_object        *lit_obj; /* object from the layer below */
+       /* stripe offset of iteration */
+       __u32                   lit_stripe_index;
+       __u32                   lit_attr;
+       struct dt_it            *lit_it;  /* iterator from the layer below */
+};

 
 struct lod_thread_info {
        /* per-thread buffer for LOV EA */
        void             *lti_ea_store;
        int               lti_ea_store_size;
 
 struct lod_thread_info {
        /* per-thread buffer for LOV EA */
        void             *lti_ea_store;
        int               lti_ea_store_size;

+       /* per-thread buffer for LMV EA */

        struct lu_buf     lti_buf;
        struct ost_id     lti_ostid;
        struct lu_fid     lti_fid;
        struct obd_statfs lti_osfs;
        struct lu_attr    lti_attr;
        struct lu_buf     lti_buf;
        struct ost_id     lti_ostid;
        struct lu_fid     lti_fid;
        struct obd_statfs lti_osfs;
        struct lu_attr    lti_attr;

+       struct lod_it     lti_it;
+       struct ldlm_res_id lti_res_id;
+       /* used to hold lu_dirent, sizeof(struct lu_dirent) + NAME_MAX */
+       char              lti_key[sizeof(struct lu_dirent) + NAME_MAX];
+       struct dt_object_format lti_format;
+       struct lu_name    lti_name;
+       struct lu_buf     lti_linkea_buf;

 };
 
 extern const struct lu_device_operations lod_lu_ops;
 };
 
 extern const struct lu_device_operations lod_lu_ops;


@@ -213,12 +343,6 @@ static inline struct dt_object* lod_object_child(struct lod_object *o)
                        struct dt_object, do_lu);
 }
 
                        struct dt_object, do_lu);
 }
 

-static inline struct dt_object *lu2dt_obj(struct lu_object *o)
-{
-       LASSERT(ergo(o != NULL, lu_device_is_dt(o->lo_dev)));
-       return container_of0(o, struct dt_object, do_lu);
-}
-

 static inline struct dt_object *dt_object_child(struct dt_object *o)
 {
        return container_of0(lu_object_next(&(o)->do_lu),
 static inline struct dt_object *dt_object_child(struct dt_object *o)
 {
        return container_of0(lu_object_next(&(o)->do_lu),


@@ -235,14 +359,115 @@ static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
        return info;
 }
 
        return info;
 }
 

+static inline struct lu_name *
+lod_name_get(const struct lu_env *env, const void *area, int len)
+{
+       struct lu_name *lname;
+
+       lname = &lod_env_info(env)->lti_name;
+       lname->ln_name = area;
+       lname->ln_namelen = len;
+       return lname;
+}
+

 #define lod_foreach_ost(__dev, index)  \
        if ((__dev)->lod_osts_size > 0) \
                cfs_foreach_bit((__dev)->lod_ost_bitmap, (index))
 
 #define lod_foreach_ost(__dev, index)  \
        if ((__dev)->lod_osts_size > 0) \
                cfs_foreach_bit((__dev)->lod_ost_bitmap, (index))
 

+/* lod_dev.c */
+int lod_fld_lookup(const struct lu_env *env, struct lod_device *lod,
+                  const struct lu_fid *fid, __u32 *tgt, int *flags);

 /* lod_lov.c */
 /* lod_lov.c */

-void lod_getref(struct lod_device *lod);
-void lod_putref(struct lod_device *lod);
+void lod_getref(struct lod_tgt_descs *ltd);
+void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd);
+int lod_add_device(const struct lu_env *env, struct lod_device *lod,
+                  char *osp, unsigned index, unsigned gen, int mdt_index,
+                  char *type, int active);
+int lod_del_device(const struct lu_env *env, struct lod_device *lod,
+                  struct lod_tgt_descs *ltd, char *osp, unsigned idx,
+                  unsigned gen, bool for_ost);
+int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
+                struct lod_tgt_descs *ltd, bool for_ost);
+int lod_load_striping_locked(const struct lu_env *env, struct lod_object *lo);
+int lod_load_striping(const struct lu_env *env, struct lod_object *lo);
+
+int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
+              const char *name);
+static inline int
+lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
+{
+       return lod_get_ea(env, lo, XATTR_NAME_LOV);
+}
+
+static inline int
+lod_get_lmv_ea(const struct lu_env *env, struct lod_object *lo)
+{
+       return lod_get_ea(env, lo, XATTR_NAME_LMV);
+}
+
+static inline int
+lod_get_default_lmv_ea(const struct lu_env *env, struct lod_object *lo)
+{
+       return lod_get_ea(env, lo, XATTR_NAME_DEFAULT_LMV);
+}

 
 

+void lod_fix_desc(struct lov_desc *desc);
+void lod_fix_desc_qos_maxage(__u32 *val);
+void lod_fix_desc_pattern(__u32 *val);
+void lod_fix_desc_stripe_count(__u32 *val);
+void lod_fix_desc_stripe_size(__u64 *val);
+int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
+int lod_pools_fini(struct lod_device *m);
+int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
+                      const struct lu_buf *buf);
+int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
+                          const struct lu_buf *buf);
+int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
+                          struct lov_ost_data_v1 *objs);
+int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
+                          struct thandle *th);
+int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf,
+                       bool is_from_disk);
+int lod_generate_and_set_lovea(const struct lu_env *env,
+                              struct lod_object *mo, struct thandle *th);
+int lod_ea_store_resize(struct lod_thread_info *info, int size);
+/* lod_pool.c */
+int lod_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
+int lod_ost_pool_remove(struct ost_pool *op, __u32 idx);
+int lod_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
+struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
+void lod_pool_putref(struct pool_desc *pool);
+int lod_ost_pool_free(struct ost_pool *op);
+int lod_pool_del(struct obd_device *obd, char *poolname);
+int lod_ost_pool_init(struct ost_pool *op, unsigned int count);
+extern cfs_hash_ops_t pool_hash_operations;
+int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
+int lod_pool_new(struct obd_device *obd, char *poolname);
+int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
+int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
+
+/* lod_qos.c */
+int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
+                       struct lu_attr *attr, const struct lu_buf *buf,
+                       struct thandle *th);
+int qos_add_tgt(struct lod_device*, struct lod_tgt_desc *);
+int qos_del_tgt(struct lod_device *, struct lod_tgt_desc *);
+
+/* lproc_lod.c */
+int lod_procfs_init(struct lod_device *lod);
+void lod_procfs_fini(struct lod_device *lod);
+
+/* lod_object.c */
+int lod_load_lmv_shards(const struct lu_env *env, struct lod_object *lo,
+                       struct lu_buf *buf, bool resize);
+int lod_object_set_pool(struct lod_object *o, char *pool);
+int lod_declare_striped_object(const struct lu_env *env, struct dt_object *dt,
+                              struct lu_attr *attr,
+                              const struct lu_buf *lovea, struct thandle *th);
+int lod_striping_create(const struct lu_env *env, struct dt_object *dt,
+                       struct lu_attr *attr, struct dt_object_format *dof,
+                       struct thandle *th);
+void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo);

 
 #endif
 
 
 #endif