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27 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
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36 * lustre/osd-zfs/osd_internal.h
37 * Shared definitions and declarations for zfs/dmu osd
39 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
40 * Author: Mike Pershin <tappro@whamcloud.com>
41 * Author: Johann Lombardi <johann@whamcloud.com>
44 #ifndef _OSD_INTERNAL_H
45 #define _OSD_INTERNAL_H
47 #include <dt_object.h>
48 #include <md_object.h>
49 #include <lustre_quota.h>
54 #include <sys/nvpair.h>
55 #include <sys/zfs_znode.h>
60 * By design including kmem.h overrides the Linux slab interfaces to provide
61 * the Illumos kmem cache interfaces. To override this and gain access to
62 * the Linux interfaces these preprocessor macros must be undefined.
64 #ifdef kmem_cache_destroy
65 #undef kmem_cache_destroy
68 #ifdef kmem_cache_create
69 #undef kmem_cache_create
72 #ifdef kmem_cache_alloc
73 #undef kmem_cache_alloc
76 #ifdef kmem_cache_free
77 #undef kmem_cache_free
80 #define LUSTRE_ROOT_FID_SEQ 0
81 #define DMU_OSD_SVNAME "svname"
82 #define DMU_OSD_OI_NAME_BASE "oi"
84 #define OSD_GFP_IO (GFP_NOFS | __GFP_HIGHMEM)
86 /* Statfs space reservation for grant, fragmentation, and unlink space. */
87 #define OSD_STATFS_RESERVED_SIZE (16ULL << 20) /* reserve 16MB minimum */
88 #define OSD_STATFS_RESERVED_SHIFT (7) /* reserve 0.78% of all space */
90 /* Statfs {minimum, safe estimate, and maximum} dnodes per block */
91 #define OSD_DNODE_MIN_BLKSHIFT (DNODES_PER_BLOCK_SHIFT)
92 #define OSD_DNODE_EST_BLKSHIFT (DNODES_PER_BLOCK_SHIFT >> 1)
93 #define OSD_DNODE_EST_COUNT 1024
95 #define OSD_GRANT_FOR_LOCAL_OIDS (2ULL << 20) /* 2MB for last_rcvd, ... */
98 * Iterator's in-memory data structure for quota file.
100 struct osd_it_quota {
101 struct osd_object *oiq_obj;
102 /* DMU accounting object id */
105 zap_cursor_t *oiq_zc;
106 /** identifier for current quota record */
108 unsigned oiq_reset:1; /* 1 -- no need to advance */
112 * Iterator's in-memory data structure for ZAPs
114 * ZFS does not store . and .. on a disk, instead they are
115 * generated up on request
116 * to follow this format we do the same
119 zap_cursor_t *ozi_zc;
120 struct osd_object *ozi_obj;
121 unsigned ozi_reset:1; /* 1 -- no need to advance */
122 /* ozi_pos - position of the cursor:
123 * 0 - before any record
126 * 3 - real records */
129 char ozi_name[MAXNAMELEN]; /* file name for dir */
130 __u64 ozi_key; /* binary key for index files */
133 #define DT_IT2DT(it) (&((struct osd_zap_it *)it)->ozi_obj->oo_dt)
136 * regular ZFS direntry
138 struct zpl_direntry {
139 uint64_t zde_dnode:48,
142 } __attribute__((packed));
145 * lustre direntry adds a fid to regular ZFS direntry
147 struct luz_direntry {
148 struct zpl_direntry lzd_reg;
149 struct lu_fid lzd_fid;
150 } __attribute__((packed));
153 /* cached SA attributes */
167 struct osd_thread_info {
168 const struct lu_env *oti_env;
170 struct lu_fid oti_fid;
172 * XXX temporary: for ->i_op calls.
174 struct timespec oti_time;
176 struct ost_id oti_ostid;
182 char oti_key[MAXNAMELEN + 1];
183 __u64 oti_key64[(MAXNAMELEN + 1)/sizeof(__u64)];
185 struct lustre_mdt_attrs oti_mdt_attrs;
187 struct lu_attr oti_la;
188 struct osa_attr oti_osa;
189 zap_attribute_t oti_za;
190 dmu_object_info_t oti_doi;
191 struct luz_direntry oti_zde;
193 struct lquota_id_info oti_qi;
194 struct lu_seq_range oti_seq_range;
197 extern struct lu_context_key osd_key;
199 static inline struct osd_thread_info *osd_oti_get(const struct lu_env *env)
201 return lu_context_key_get(&env->le_ctx, &osd_key);
205 struct thandle ot_super;
206 struct list_head ot_dcb_list;
207 struct list_head ot_stop_dcb_list;
208 struct list_head ot_unlinked_list;
209 struct list_head ot_sa_list;
210 struct semaphore ot_sa_lock;
212 struct lquota_trans ot_quota_trans;
213 __u32 ot_write_commit:1,
217 #define OSD_OI_NAME_SIZE 16
220 * Object Index (OI) instance.
223 char oi_name[OSD_OI_NAME_SIZE]; /* unused */
229 uint64_t *os_compat_dirs;
230 int os_subdir_count; /* subdir count for each seq */
231 u64 os_seq; /* seq number */
232 struct list_head os_seq_list; /* list to seq_list */
235 struct osd_seq_list {
236 rwlock_t osl_seq_list_lock; /* lock for seq_list */
237 struct list_head osl_seq_list; /* list head for seq */
238 struct semaphore osl_seq_init_sem;
241 #define OSD_OST_MAP_SIZE 32
248 struct dt_device od_dt_dev;
249 /* information about underlying file system */
250 struct objset *od_os;
251 uint64_t od_rootid; /* id of root znode */
252 uint64_t od_unlinkedid; /* id of unlinked zapobj */
253 /* SA attr mapping->id,
254 * name is the same as in ZFS to use defines SA_ZPL_...*/
255 sa_attr_type_t *z_attr_table;
257 struct proc_dir_entry *od_proc_entry;
258 struct lprocfs_stats *od_stats;
260 uint64_t od_max_blksz;
263 struct osd_oi **od_oi_table;
264 unsigned int od_oi_count;
265 struct osd_seq_list od_seq_list;
267 unsigned int od_dev_set_rdonly:1, /**< osd_ro() called */
268 od_prop_rdonly:1, /**< ZFS property readonly */
270 od_quota_iused_est:1,
278 struct lu_site od_site;
280 /* object IDs of the inode accounting indexes */
281 uint64_t od_iusr_oid;
282 uint64_t od_igrp_oid;
284 /* quota slave instance */
285 struct qsd_instance *od_quota_slave;
287 struct brw_stats od_brw_stats;
288 atomic_t od_r_in_flight;
289 atomic_t od_w_in_flight;
291 /* used to debug zerocopy logic: the fields track all
292 * allocated, loaned and referenced buffers in use.
293 * to be removed once the change is tested well. */
294 atomic_t od_zerocopy_alloc;
295 atomic_t od_zerocopy_loan;
296 atomic_t od_zerocopy_pin;
298 arc_prune_t *arc_prune_cb;
300 /* osd seq instance */
301 struct lu_client_seq *od_cl_seq;
304 enum osd_destroy_type {
305 OSD_DESTROY_NONE = 0,
306 OSD_DESTROY_SYNC = 1,
307 OSD_DESTROY_ASYNC = 2,
311 struct dt_object oo_dt;
313 * Inode for file system object represented by this osd_object. This
314 * inode is pinned for the whole duration of lu_object life.
316 * Not modified concurrently (either setup early during object
317 * creation, or assigned by osd_object_create() under write lock).
320 sa_handle_t *oo_sa_hdl;
321 nvlist_t *oo_sa_xattr;
322 struct list_head oo_sa_linkage;
324 /* used to implement osd_object_*_{lock|unlock} */
325 struct rw_semaphore oo_sem;
327 /* to serialize some updates: destroy vs. others,
329 struct rw_semaphore oo_guard;
331 /* protected by oo_guard */
332 struct list_head oo_unlinked_linkage;
334 /* cached attributes */
335 rwlock_t oo_attr_lock;
336 struct lu_attr oo_attr;
338 /* external dnode holding large EAs, protected by oo_guard */
340 enum osd_destroy_type oo_destroy;
342 __u32 oo_destroyed:1;
344 /* the i_flags in LMA */
346 /* record size for index file */
347 unsigned char oo_keysize;
348 unsigned char oo_recsize;
349 unsigned char oo_recusize; /* unit size */
352 int osd_statfs(const struct lu_env *, struct dt_device *, struct obd_statfs *);
353 extern const struct dt_index_operations osd_acct_index_ops;
354 uint64_t osd_quota_fid2dmu(const struct lu_fid *fid);
355 extern struct lu_device_operations osd_lu_ops;
356 extern struct dt_index_operations osd_dir_ops;
357 int osd_declare_quota(const struct lu_env *env, struct osd_device *osd,
358 qid_t uid, qid_t gid, long long space,
359 struct osd_thandle *oh, bool is_blk, int *flags,
361 uint64_t osd_objs_count_estimate(uint64_t refdbytes, uint64_t usedobjs,
362 uint64_t nrblocks, uint64_t est_maxblockshift);
367 static inline int lu_device_is_osd(const struct lu_device *d)
369 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &osd_lu_ops);
372 static inline struct osd_object *osd_obj(const struct lu_object *o)
374 LASSERT(lu_device_is_osd(o->lo_dev));
375 return container_of0(o, struct osd_object, oo_dt.do_lu);
378 static inline struct osd_device *osd_dt_dev(const struct dt_device *d)
380 LASSERT(lu_device_is_osd(&d->dd_lu_dev));
381 return container_of0(d, struct osd_device, od_dt_dev);
384 static inline struct osd_device *osd_dev(const struct lu_device *d)
386 LASSERT(lu_device_is_osd(d));
387 return osd_dt_dev(container_of0(d, struct dt_device, dd_lu_dev));
390 static inline struct osd_object *osd_dt_obj(const struct dt_object *d)
392 return osd_obj(&d->do_lu);
395 static inline struct osd_device *osd_obj2dev(const struct osd_object *o)
397 return osd_dev(o->oo_dt.do_lu.lo_dev);
400 static inline struct lu_device *osd2lu_dev(struct osd_device *osd)
402 return &osd->od_dt_dev.dd_lu_dev;
405 static inline struct objset * osd_dtobj2objset(struct dt_object *o)
407 return osd_dev(o->do_lu.lo_dev)->od_os;
410 static inline int osd_invariant(const struct osd_object *obj)
415 static inline int osd_object_invariant(const struct lu_object *l)
417 return osd_invariant(osd_obj(l));
420 static inline struct seq_server_site *osd_seq_site(struct osd_device *osd)
422 return osd->od_dt_dev.dd_lu_dev.ld_site->ld_seq_site;
425 static inline char *osd_name(struct osd_device *osd)
427 return osd->od_dt_dev.dd_lu_dev.ld_obd->obd_name;
430 #ifdef CONFIG_PROC_FS
432 LPROC_OSD_READ_BYTES = 0,
433 LPROC_OSD_WRITE_BYTES = 1,
434 LPROC_OSD_GET_PAGE = 2,
435 LPROC_OSD_NO_PAGE = 3,
436 LPROC_OSD_CACHE_ACCESS = 4,
437 LPROC_OSD_CACHE_HIT = 5,
438 LPROC_OSD_CACHE_MISS = 6,
439 LPROC_OSD_COPY_IO = 7,
440 LPROC_OSD_ZEROCOPY_IO = 8,
441 LPROC_OSD_TAIL_IO = 9,
445 extern struct kmem_cache *osd_zapit_cachep;
447 extern struct lprocfs_vars lprocfs_osd_obd_vars[];
449 int osd_procfs_init(struct osd_device *osd, const char *name);
450 int osd_procfs_fini(struct osd_device *osd);
453 extern char *osd_obj_tag;
454 void osd_object_sa_dirty_rele(struct osd_thandle *oh);
455 int __osd_obj2dbuf(const struct lu_env *env, objset_t *os,
456 uint64_t oid, dmu_buf_t **dbp);
457 struct lu_object *osd_object_alloc(const struct lu_env *env,
458 const struct lu_object_header *hdr,
459 struct lu_device *d);
460 int osd_object_sa_update(struct osd_object *obj, sa_attr_type_t type,
461 void *buf, uint32_t buflen, struct osd_thandle *oh);
462 int __osd_zap_create(const struct lu_env *env, struct osd_device *osd,
463 dmu_buf_t **zap_dbp, dmu_tx_t *tx, struct lu_attr *la,
464 uint64_t parent, zap_flags_t flags);
465 int __osd_object_create(const struct lu_env *env, struct osd_object *obj,
466 dmu_buf_t **dbp, dmu_tx_t *tx, struct lu_attr *la,
470 int osd_oi_init(const struct lu_env *env, struct osd_device *o);
471 void osd_oi_fini(const struct lu_env *env, struct osd_device *o);
472 int osd_fid_lookup(const struct lu_env *env,
473 struct osd_device *, const struct lu_fid *, uint64_t *);
474 uint64_t osd_get_name_n_idx(const struct lu_env *env, struct osd_device *osd,
475 const struct lu_fid *fid, char *buf);
476 int osd_options_init(void);
477 int osd_ost_seq_exists(const struct lu_env *env, struct osd_device *osd,
480 int osd_index_try(const struct lu_env *env, struct dt_object *dt,
481 const struct dt_index_features *feat);
482 int osd_fld_lookup(const struct lu_env *env, struct osd_device *osd,
483 u64 seq, struct lu_seq_range *range);
484 void osd_zap_cursor_init_serialized(zap_cursor_t *zc, struct objset *os,
485 uint64_t id, uint64_t dirhash);
486 int osd_zap_cursor_init(zap_cursor_t **zc, struct objset *os,
487 uint64_t id, uint64_t dirhash);
488 void osd_zap_cursor_fini(zap_cursor_t *zc);
489 uint64_t osd_zap_cursor_serialize(zap_cursor_t *zc);
492 int __osd_xattr_load(struct osd_device *osd, uint64_t dnode,
493 nvlist_t **sa_xattr);
494 int __osd_xattr_get_large(const struct lu_env *env, struct osd_device *osd,
495 uint64_t xattr, struct lu_buf *buf,
496 const char *name, int *sizep);
497 int osd_xattr_get(const struct lu_env *env, struct dt_object *dt,
498 struct lu_buf *buf, const char *name);
499 int osd_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
500 const struct lu_buf *buf, const char *name,
501 int fl, struct thandle *handle);
502 int osd_xattr_set(const struct lu_env *env, struct dt_object *dt,
503 const struct lu_buf *buf, const char *name, int fl,
504 struct thandle *handle);
505 int osd_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
506 const char *name, struct thandle *handle);
507 int osd_xattr_del(const struct lu_env *env, struct dt_object *dt,
508 const char *name, struct thandle *handle);
509 void osd_declare_xattrs_destroy(const struct lu_env *env,
510 struct osd_object *obj,
511 struct osd_thandle *oh);
512 int osd_xattrs_destroy(const struct lu_env *env,
513 struct osd_object *obj, struct osd_thandle *oh);
514 int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
515 const struct lu_buf *lb);
516 void __osd_xattr_declare_set(const struct lu_env *env, struct osd_object *obj,
517 int vallen, const char *name, struct osd_thandle *oh);
518 int __osd_sa_xattr_set(const struct lu_env *env, struct osd_object *obj,
519 const struct lu_buf *buf, const char *name, int fl,
520 struct osd_thandle *oh);;
521 int __osd_xattr_set(const struct lu_env *env, struct osd_object *obj,
522 const struct lu_buf *buf, const char *name, int fl,
523 struct osd_thandle *oh);
525 osd_xattr_set_internal(const struct lu_env *env, struct osd_object *obj,
526 const struct lu_buf *buf, const char *name, int fl,
527 struct osd_thandle *oh)
531 if (unlikely(!dt_object_exists(&obj->oo_dt) || obj->oo_destroyed))
535 if (osd_obj2dev(obj)->od_xattr_in_sa) {
536 rc = __osd_sa_xattr_set(env, obj, buf, name, fl, oh);
538 rc = __osd_xattr_set(env, obj, buf, name, fl, oh);
540 rc = __osd_xattr_set(env, obj, buf, name, fl, oh);
546 static inline uint64_t attrs_fs2zfs(const uint32_t flags)
548 return (flags & LUSTRE_APPEND_FL ? ZFS_APPENDONLY : 0) |
549 (flags & LUSTRE_NODUMP_FL ? ZFS_NODUMP : 0) |
550 (flags & LUSTRE_IMMUTABLE_FL ? ZFS_IMMUTABLE : 0);
553 static inline uint32_t attrs_zfs2fs(const uint64_t flags)
555 return (flags & ZFS_APPENDONLY ? LUSTRE_APPEND_FL : 0) |
556 (flags & ZFS_NODUMP ? LUSTRE_NODUMP_FL : 0) |
557 (flags & ZFS_IMMUTABLE ? LUSTRE_IMMUTABLE_FL : 0);
562 #ifndef HAVE_DSL_POOL_CONFIG
563 static inline void dsl_pool_config_enter(dsl_pool_t *dp, char *name)
567 static inline void dsl_pool_config_exit(dsl_pool_t *dp, char *name)
572 #ifdef HAVE_SPA_MAXBLOCKSIZE
573 #define osd_spa_maxblocksize(spa) spa_maxblocksize(spa)
574 #define osd_spa_maxblockshift(spa) fls64(spa_maxblocksize(spa) - 1)
576 #define osd_spa_maxblocksize(spa) SPA_MAXBLOCKSIZE
577 #define osd_spa_maxblockshift(spa) SPA_MAXBLOCKSHIFT
578 #define SPA_OLD_MAXBLOCKSIZE SPA_MAXBLOCKSIZE
581 #ifdef HAVE_SA_SPILL_ALLOC
583 osd_zio_buf_alloc(size_t size)
585 return sa_spill_alloc(KM_SLEEP);
589 osd_zio_buf_free(void *buf, size_t size)
594 #define osd_zio_buf_alloc(size) zio_buf_alloc(size)
595 #define osd_zio_buf_free(buf, size) zio_buf_free(buf, size)
598 #endif /* _OSD_INTERNAL_H */