*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef _LMV_INTERNAL_H_
int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
void *, int);
int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds);
-int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds);
int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
struct lu_fid *fid, struct md_op_data *op_data);
int lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
struct ptlrpc_request **preq);
+void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt,
+ int activate);
+
+int lmv_statfs_check_update(struct obd_device *obd, struct lmv_tgt_desc *tgt);
static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
{
- return container_of0(lmv, struct obd_device, u.lmv);
+ return container_of_safe(lmv, struct obd_device, u.lmv);
}
-static inline struct lmv_tgt_desc *
-lmv_get_target(struct lmv_obd *lmv, u32 mdt_idx, int *index)
+static inline struct lu_tgt_desc *
+lmv_tgt(struct lmv_obd *lmv, __u32 index)
{
- int i;
+ return index < lmv->lmv_mdt_descs.ltd_tgts_size ?
+ LTD_TGT(&lmv->lmv_mdt_descs, index) : NULL;
+}
- for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
- if (lmv->tgts[i] == NULL)
- continue;
+static inline bool
+lmv_mdt0_inited(struct lmv_obd *lmv)
+{
+ return lmv->lmv_mdt_descs.ltd_tgts_size > 0 &&
+ test_bit(0, lmv->lmv_mdt_descs.ltd_tgt_bitmap);
+}
- if (lmv->tgts[i]->ltd_idx == mdt_idx) {
- if (index != NULL)
- *index = i;
- return lmv->tgts[i];
- }
- }
+#define lmv_foreach_tgt(lmv, tgt) ltd_foreach_tgt(&(lmv)->lmv_mdt_descs, tgt)
+
+#define lmv_foreach_tgt_safe(lmv, tgt, tmp) \
+ ltd_foreach_tgt_safe(&(lmv)->lmv_mdt_descs, tgt, tmp)
+
+static inline
+struct lu_tgt_desc *lmv_first_connected_tgt(struct lmv_obd *lmv)
+{
+ struct lu_tgt_desc *tgt;
- return ERR_PTR(-ENODEV);
+ tgt = ltd_first_tgt(&lmv->lmv_mdt_descs);
+ while (tgt && !tgt->ltd_exp)
+ tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt);
+
+ return tgt;
+}
+
+static inline
+struct lu_tgt_desc *lmv_next_connected_tgt(struct lmv_obd *lmv,
+ struct lu_tgt_desc *tgt)
+{
+ do {
+ tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt);
+ } while (tgt && !tgt->ltd_exp);
+
+ return tgt;
}
+#define lmv_foreach_connected_tgt(lmv, tgt) \
+ for (tgt = lmv_first_connected_tgt(lmv); tgt; \
+ tgt = lmv_next_connected_tgt(lmv, tgt))
+
static inline int
-lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
+lmv_fid2tgt_index(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- struct lmv_tgt_desc *ltd;
- u32 mdt_idx = 0;
- int index = 0;
-
- if (lmv->desc.ld_tgt_count > 1) {
- int rc;
- rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
- if (rc < 0)
- return rc;
- }
+ u32 mdt_idx;
+ int rc;
- ltd = lmv_get_target(lmv, mdt_idx, &index);
- if (IS_ERR(ltd))
- return PTR_ERR(ltd);
+ if (lmv->lmv_mdt_count < 2)
+ return 0;
- return index;
+ rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
+ if (rc < 0)
+ return rc;
+
+ return mdt_idx;
}
static inline struct lmv_tgt_desc *
-lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
+lmv_fid2tgt(struct lmv_obd *lmv, const struct lu_fid *fid)
{
+ struct lu_tgt_desc *tgt;
int index;
- index = lmv_find_target_index(lmv, fid);
+ index = lmv_fid2tgt_index(lmv, fid);
if (index < 0)
return ERR_PTR(index);
- return lmv->tgts[index];
+ tgt = lmv_tgt(lmv, index);
+
+ return tgt ? tgt : ERR_PTR(-ENODEV);
}
static inline int lmv_stripe_md_size(int stripe_count)
/* for file under migrating directory, return the target stripe info */
static inline const struct lmv_oinfo *
lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
- int namelen, bool post_migrate)
+ int namelen, bool new_layout)
{
- __u32 hash_type = lsm->lsm_md_hash_type;
- __u32 stripe_count = lsm->lsm_md_stripe_count;
int stripe_index;
- if (hash_type & LMV_HASH_FLAG_MIGRATION) {
- if (post_migrate) {
- hash_type &= ~LMV_HASH_FLAG_MIGRATION;
- stripe_count = lsm->lsm_md_migrate_offset;
- } else {
- hash_type = lsm->lsm_md_migrate_hash;
- stripe_count -= lsm->lsm_md_migrate_offset;
- }
- }
+ LASSERT(lmv_dir_striped(lsm));
- stripe_index = lmv_name_to_stripe_index(hash_type, stripe_count,
- name, namelen);
+ stripe_index = __lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
+ lsm->lsm_md_stripe_count,
+ lsm->lsm_md_migrate_hash,
+ lsm->lsm_md_migrate_offset,
+ name, namelen, new_layout);
if (stripe_index < 0)
return ERR_PTR(stripe_index);
- if ((lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION) && !post_migrate)
- stripe_index += lsm->lsm_md_migrate_offset;
-
- if (stripe_index >= lsm->lsm_md_stripe_count) {
- CERROR("stripe_index %d stripe_count %d hash_type %#x "
- "migrate_offset %d migrate_hash %#x name %.*s\n",
- stripe_index, lsm->lsm_md_stripe_count,
- lsm->lsm_md_hash_type, lsm->lsm_md_migrate_offset,
- lsm->lsm_md_migrate_hash, namelen, name);
- return ERR_PTR(-EBADF);
- }
-
return &lsm->lsm_md_oinfo[stripe_index];
}
-static inline bool lmv_is_dir_migrating(const struct lmv_stripe_md *lsm)
-{
- return lsm ? lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION : false;
-}
-
-static inline bool lmv_is_dir_bad_hash(const struct lmv_stripe_md *lsm)
-{
- if (!lsm)
- return false;
-
- if (lmv_is_dir_migrating(lsm)) {
- if (lsm->lsm_md_stripe_count - lsm->lsm_md_migrate_offset > 1)
- return !lmv_is_known_hash_type(
- lsm->lsm_md_migrate_hash);
- return false;
- }
-
- return !lmv_is_known_hash_type(lsm->lsm_md_hash_type);
-}
-
static inline bool lmv_dir_retry_check_update(struct md_op_data *op_data)
{
const struct lmv_stripe_md *lsm = op_data->op_mea1;
if (!lsm)
return false;
- if (lmv_is_dir_migrating(lsm) && !op_data->op_post_migrate) {
- op_data->op_post_migrate = true;
+ if (lmv_dir_layout_changing(lsm) && !op_data->op_new_layout) {
+ op_data->op_new_layout = true;
return true;
}
- if (lmv_is_dir_bad_hash(lsm) &&
+ if (lmv_dir_bad_hash(lsm) &&
op_data->op_stripe_index < lsm->lsm_md_stripe_count - 1) {
op_data->op_stripe_index++;
return true;
}
struct lmv_tgt_desc *lmv_locate_tgt(struct lmv_obd *lmv,
- struct md_op_data *op_data,
- struct lu_fid *fid);
+ struct md_op_data *op_data);
+int lmv_old_layout_lookup(struct lmv_obd *lmv, struct md_op_data *op_data);
+
/* lproc_lmv.c */
int lmv_tunables_init(struct obd_device *obd);
-
#endif