*
* 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
*/
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define LOV_INTERNAL_H
#include <obd_class.h>
-#include <lustre/lustre_user.h>
+#include <uapi/linux/lustre/lustre_user.h>
+
+/* If we are unable to get the maximum object size from the OST in
+ * ocd_maxbytes using OBD_CONNECT_MAXBYTES, then we fall back to using
+ * the old maximum object size from ext3. */
+#define LUSTRE_EXT3_STRIPE_MAXBYTES 0x1fffffff000ULL
+
+struct lov_stripe_md_entry {
+ struct lu_extent lsme_extent;
+ u32 lsme_id;
+ u32 lsme_magic;
+ u32 lsme_flags;
+ u32 lsme_pattern;
+ u64 lsme_timestamp;
+ u32 lsme_stripe_size;
+ u16 lsme_stripe_count;
+ u16 lsme_layout_gen;
+ char lsme_pool_name[LOV_MAXPOOLNAME + 1];
+ struct lov_oinfo *lsme_oinfo[];
+};
+
+static inline bool lsme_is_dom(struct lov_stripe_md_entry *lsme)
+{
+ return (lov_pattern(lsme->lsme_pattern) == LOV_PATTERN_MDT);
+}
+
+static inline void copy_lsm_entry(struct lov_stripe_md_entry *dst,
+ struct lov_stripe_md_entry *src)
+{
+ unsigned i;
+
+ for (i = 0; i < src->lsme_stripe_count; i++)
+ *dst->lsme_oinfo[i] = *src->lsme_oinfo[i];
+ memcpy(dst, src, offsetof(typeof(*src), lsme_oinfo));
+}
+
+struct lov_stripe_md {
+ atomic_t lsm_refc;
+ spinlock_t lsm_lock;
+ pid_t lsm_lock_owner; /* debugging */
+
+ union {
+ /* maximum possible file size, might change as OSTs status
+ * changes, e.g. disconnected, deactivated
+ */
+ loff_t lsm_maxbytes;
+ /* size of full foreign LOV */
+ size_t lsm_foreign_size;
+ };
+ struct ost_id lsm_oi;
+ u32 lsm_magic;
+ u32 lsm_layout_gen;
+ u16 lsm_flags;
+ bool lsm_is_released;
+ u16 lsm_mirror_count;
+ u16 lsm_entry_count;
+ struct lov_stripe_md_entry *lsm_entries[];
+};
+
+#define lsm_foreign(lsm) (lsm->lsm_entries[0])
+
+static inline bool lsme_inited(const struct lov_stripe_md_entry *lsme)
+{
+ return lsme->lsme_flags & LCME_FL_INIT;
+}
+
+static inline bool lsm_entry_inited(const struct lov_stripe_md *lsm, int index)
+{
+ return lsme_inited(lsm->lsm_entries[index]);
+}
+
+static inline bool lsm_is_composite(__u32 magic)
+{
+ return magic == LOV_MAGIC_COMP_V1;
+}
+
+static inline size_t lov_comp_md_size(const struct lov_stripe_md *lsm)
+{
+ struct lov_stripe_md_entry *lsme;
+ size_t size;
+ int entry;
+
+ if (lsm->lsm_magic == LOV_MAGIC_V1 || lsm->lsm_magic == LOV_MAGIC_V3)
+ return lov_mds_md_size(lsm->lsm_entries[0]->lsme_stripe_count,
+ lsm->lsm_entries[0]->lsme_magic);
+
+ if (lsm->lsm_magic == LOV_MAGIC_FOREIGN)
+ return lsm->lsm_foreign_size;
+
+ LASSERT(lsm->lsm_magic == LOV_MAGIC_COMP_V1);
+
+ size = sizeof(struct lov_comp_md_v1);
+ for (entry = 0; entry < lsm->lsm_entry_count; entry++) {
+ u16 stripe_count;
+
+ lsme = lsm->lsm_entries[entry];
+
+ if (lsme_inited(lsme))
+ stripe_count = lsme->lsme_stripe_count;
+ else
+ stripe_count = 0;
+
+ size += sizeof(*lsme);
+ size += lov_mds_md_size(stripe_count,
+ lsme->lsme_magic);
+ }
+
+ return size;
+}
+
+static inline bool lsm_has_objects(struct lov_stripe_md *lsm)
+{
+ return lsm != NULL && !lsm->lsm_is_released;
+}
+
+static inline unsigned int lov_comp_index(int entry, int stripe)
+{
+ LASSERT(entry >= 0 && entry <= SHRT_MAX);
+ LASSERT(stripe >= 0 && stripe < USHRT_MAX);
+
+ return entry << 16 | stripe;
+}
+
+static inline int lov_comp_stripe(int index)
+{
+ return index & 0xffff;
+}
+
+static inline int lov_comp_entry(int index)
+{
+ return index >> 16;
+}
+
+struct lsm_operations {
+ struct lov_stripe_md *(*lsm_unpackmd)(struct lov_obd *, void *, size_t);
+};
+
+extern const struct lsm_operations lsm_v1_ops;
+extern const struct lsm_operations lsm_v3_ops;
+extern const struct lsm_operations lsm_comp_md_v1_ops;
+extern const struct lsm_operations lsm_foreign_ops;
+static inline const struct lsm_operations *lsm_op_find(int magic)
+{
+ switch (magic) {
+ case LOV_MAGIC_V1:
+ return &lsm_v1_ops;
+ case LOV_MAGIC_V3:
+ return &lsm_v3_ops;
+ case LOV_MAGIC_COMP_V1:
+ return &lsm_comp_md_v1_ops;
+ case LOV_MAGIC_FOREIGN:
+ return &lsm_foreign_ops;
+ default:
+ CERROR("unrecognized lsm_magic %08x\n", magic);
+ return NULL;
+ }
+}
+
+void lsm_free(struct lov_stripe_md *lsm);
/* lov_do_div64(a, b) returns a % b, and a = a / b.
* The 32-bit code is LOV-specific due to knowing about stripe limits in
})
#elif BITS_PER_LONG == 32
# define lov_do_div64(n, base) ({ \
+ uint64_t __num = (n); \
uint64_t __rem; \
if ((sizeof(base) > 4) && (((base) & 0xffffffff00000000ULL) != 0)) { \
- int __remainder; \
- LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), "64 bit lov " \
- "division %llu / %llu\n", (n), (uint64_t)(base)); \
- __remainder = (n) & (LOV_MIN_STRIPE_SIZE - 1); \
- (n) >>= LOV_MIN_STRIPE_BITS; \
- __rem = do_div(n, (base) >> LOV_MIN_STRIPE_BITS); \
+ int __remainder; \
+ LASSERTF(!((base) & (LOV_MIN_STRIPE_SIZE - 1)), \
+ "64 bit lov division %llu / %llu\n", \
+ __num, (uint64_t)(base)); \
+ __remainder = __num & (LOV_MIN_STRIPE_SIZE - 1); \
+ __num >>= LOV_MIN_STRIPE_BITS; \
+ __rem = do_div(__num, (base) >> LOV_MIN_STRIPE_BITS); \
__rem <<= LOV_MIN_STRIPE_BITS; \
__rem += __remainder; \
} else { \
- __rem = do_div(n, base); \
+ __rem = do_div(__num, base); \
} \
+ (n) = __num; \
__rem; \
})
#endif
-#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 pool_desc {
char pool_name[LOV_MAXPOOLNAME + 1];
- struct ost_pool pool_obds;
+ struct lu_tgt_pool pool_obds;
atomic_t pool_refcount;
- struct hlist_node pool_hash; /* access by poolname */
+ struct rhash_head pool_hash; /* access by poolname */
struct list_head pool_list; /* serial access */
+ struct rcu_head pool_rcu;
struct proc_dir_entry *pool_proc_entry;
struct obd_device *pool_lobd; /* owner */
};
+int lov_pool_hash_init(struct rhashtable *tbl);
+void lov_pool_hash_destroy(struct rhashtable *tbl);
+
struct lov_request {
struct obd_info rq_oi;
struct lov_request_set *rq_rqset;
struct list_head rq_link;
int rq_idx; /* index in lov->tgts array */
- int rq_stripe; /* stripe number */
- int rq_complete;
- int rq_rc;
};
struct lov_request_set {
struct obd_info *set_oi;
- atomic_t set_refcount;
- struct obd_export *set_exp;
- /* XXX: There is @set_exp already, however obd_statfs gets
- obd_device only. */
struct obd_device *set_obd;
int set_count;
atomic_t set_completes;
atomic_t set_success;
- atomic_t set_finish_checked;
- struct llog_cookie *set_cookies;
struct list_head set_list;
- wait_queue_head_t set_waitq;
};
extern struct kmem_cache *lov_oinfo_slab;
-void lov_finish_set(struct lov_request_set *set);
-
-static inline void lov_put_reqset(struct lov_request_set *set)
-{
- if (atomic_dec_and_test(&set->set_refcount))
- lov_finish_set(set);
-}
+extern struct lu_kmem_descr lov_caches[];
#define lov_uuid2str(lv, index) \
(char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
/* lov_merge.c */
-void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
- struct lov_stripe_md *lsm, int stripeno, int *set);
-int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
+int lov_merge_lvb_kms(struct lov_stripe_md *lsm, int index,
struct ost_lvb *lvb, __u64 *kms_place);
/* lov_offset.c */
-obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
- int stripeno);
-int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
- int stripeno, obd_off *obd_off);
-obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
- int stripeno);
-int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
- obd_off start, obd_off end,
- obd_off *obd_start, obd_off *obd_end);
-int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
-pgoff_t lov_stripe_pgoff(struct lov_stripe_md *lsm, pgoff_t stripe_index,
- int stripe);
+loff_t stripe_width(struct lov_stripe_md *lsm, unsigned int index);
+u64 lov_stripe_size(struct lov_stripe_md *lsm, int index,
+ u64 ost_size, int stripeno);
+int lov_stripe_offset(struct lov_stripe_md *lsm, int index, loff_t lov_off,
+ int stripeno, loff_t *obd_off);
+loff_t lov_size_to_stripe(struct lov_stripe_md *lsm, int index, u64 file_size,
+ int stripeno);
+int lov_stripe_intersects(struct lov_stripe_md *lsm, int index, int stripeno,
+ struct lu_extent *ext, u64 *obd_start, u64 *obd_end);
+int lov_stripe_number(struct lov_stripe_md *lsm, int index, loff_t lov_off);
+pgoff_t lov_stripe_pgoff(struct lov_stripe_md *lsm, int index,
+ pgoff_t stripe_index, int stripe);
/* lov_request.c */
-void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
-int lov_set_finished(struct lov_request_set *set, int idempotent);
-void lov_update_set(struct lov_request_set *set,
- struct lov_request *req, int rc);
-int lov_update_common_set(struct lov_request_set *set,
- struct lov_request *req, int rc);
-int lov_check_and_wait_active(struct lov_obd *lov, int ost_idx);
-int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
- struct lov_request_set **reqset);
-int lov_fini_getattr_set(struct lov_request_set *set);
-int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
- struct obdo *src_oa, struct lov_stripe_md *lsm,
- struct obd_trans_info *oti,
- struct lov_request_set **reqset);
-int lov_fini_destroy_set(struct lov_request_set *set);
-int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
- struct obd_trans_info *oti,
- struct lov_request_set **reqset);
-int lov_update_setattr_set(struct lov_request_set *set,
- struct lov_request *req, int rc);
-int lov_fini_setattr_set(struct lov_request_set *set);
int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
struct lov_request_set **reqset);
-void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
- int success);
-int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
- int success);
int lov_fini_statfs_set(struct lov_request_set *set);
-int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
/* lov_obd.c */
+void lov_tgts_getref(struct obd_device *obd);
+void lov_tgts_putref(struct obd_device *obd);
void lov_stripe_lock(struct lov_stripe_md *md);
void lov_stripe_unlock(struct lov_stripe_md *md);
void lov_fix_desc(struct lov_desc *desc);
void lov_fix_desc_stripe_count(__u32 *val);
void lov_fix_desc_pattern(__u32 *val);
void lov_fix_desc_qos_maxage(__u32 *val);
-__u16 lov_get_stripecnt(struct lov_obd *lov, __u32 magic, __u16 stripe_count);
-int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
- struct obd_connect_data *data);
+__u16 lov_get_stripe_count(struct lov_obd *lov, __u32 magic,
+ __u16 stripe_count);
+int lov_connect_obd(struct obd_device *obd, u32 index, int activate,
+ struct obd_connect_data *data);
int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
- __u32 *indexp, int *genp);
-int lov_del_target(struct obd_device *obd, __u32 index,
- struct obd_uuid *uuidp, int gen);
+ u32 *indexp, int *genp);
+int lov_del_target(struct obd_device *obd, u32 index,
+ struct obd_uuid *uuidp, int gen);
/* lov_pack.c */
-int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
- struct lov_stripe_md *lsm);
-int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
- struct lov_mds_md *lmm, int lmm_bytes);
-int lov_getstripe(struct obd_export *exp,
- struct lov_stripe_md *lsm, struct lov_user_md *lump);
-int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count,
- int pattern, int magic);
+ssize_t lov_lsm_pack(const struct lov_stripe_md *lsm, void *buf,
+ size_t buf_size);
+struct lov_stripe_md *lov_unpackmd(struct lov_obd *lov, void *buf,
+ size_t buf_size);
int lov_free_memmd(struct lov_stripe_md **lsmp);
void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
-void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
void lov_dump_lmm_common(int level, void *lmmp);
-void lov_dump_lmm(int level, void *lmm);
/* lov_ea.c */
-struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size);
void lsm_free_plain(struct lov_stripe_md *lsm);
void dump_lsm(unsigned int level, const struct lov_stripe_md *lsm);
/* lproc_lov.c */
-extern struct file_operations lov_proc_target_fops;
-#ifdef LPROCFS
-extern struct lprocfs_seq_vars lprocfs_lov_obd_vars[];
-#endif
+int lov_tunables_init(struct obd_device *obd);
/* lov_cl.c */
extern struct lu_device_type lov_device_type;
-/* pools */
-extern cfs_hash_ops_t pool_hash_operations;
-/* ost_pool methods */
-int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
-int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
-int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
-int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
-int lov_ost_pool_free(struct ost_pool *op);
+#define LOV_MDC_TGT_MAX 256
+
+/* lu_tgt_pool methods */
+int lov_ost_pool_init(struct lu_tgt_pool *op, unsigned int count);
+int lov_ost_pool_extend(struct lu_tgt_pool *op, unsigned int min_count);
+int lov_ost_pool_add(struct lu_tgt_pool *op, __u32 idx, unsigned int min_count);
+int lov_ost_pool_remove(struct lu_tgt_pool *op, __u32 idx);
+int lov_ost_pool_free(struct lu_tgt_pool *op);
/* high level pool methods */
int lov_pool_new(struct obd_device *obd, char *poolname);
int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
void lov_dump_pool(int level, struct pool_desc *pool);
-void lov_pool_putref(struct pool_desc *pool);
static inline struct lov_stripe_md *lsm_addref(struct lov_stripe_md *lsm)
{
return false;
}
+static inline struct obd_device *lov2obd(const struct lov_obd *lov)
+{
+ return container_of_safe(lov, struct obd_device, u.lov);
+}
+
+static inline void lov_lsm2layout(struct lov_stripe_md *lsm,
+ struct lov_stripe_md_entry *lsme,
+ struct ost_layout *ol)
+{
+ ol->ol_stripe_size = lsme->lsme_stripe_size;
+ ol->ol_stripe_count = lsme->lsme_stripe_count;
+ if (lsm->lsm_magic == LOV_MAGIC_COMP_V1) {
+ ol->ol_comp_start = lsme->lsme_extent.e_start;
+ ol->ol_comp_end = lsme->lsme_extent.e_end;
+ ol->ol_comp_id = lsme->lsme_id;
+ } else {
+ ol->ol_comp_start = 0;
+ ol->ol_comp_end = 0;
+ ol->ol_comp_id = 0;
+ }
+}
+
+struct pool_desc *lov_pool_find(struct obd_device *obd, char *poolname);
+void lov_pool_putref(struct pool_desc *pool);
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff