*
* 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) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2014, Intel Corporation.
+ * Copyright (c) 2011, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef _LMV_INTERNAL_H_
#define _LMV_INTERNAL_H_
-#include <lustre/lustre_idl.h>
#include <obd.h>
#include <lustre_lmv.h>
#define LL_IT2STR(it) \
((it) ? ldlm_it2str((it)->it_op) : "0")
-int lmv_check_connect(struct obd_device *obd);
-
int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
struct lookup_intent *it, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
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_revalidate_slaves(struct obd_export *exp,
+ const struct lu_fid *pfid,
const struct lmv_stripe_md *lsm,
ldlm_blocking_callback cb_blocking,
int extra_lock_flags);
+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)
+{
+ return index < lmv->lmv_mdt_descs.ltd_tgt_bitmap->size ?
+ LTD_TGT(&lmv->lmv_mdt_descs, index) : NULL;
+}
+
+static inline bool
+lmv_mdt0_inited(struct lmv_obd *lmv)
{
- int i;
+ return lmv->lmv_mdt_descs.ltd_tgt_bitmap->size > 0 &&
+ cfs_bitmap_check(lmv->lmv_mdt_descs.ltd_tgt_bitmap, 0);
+}
- for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
- if (lmv->tgts[i] == NULL)
- continue;
+#define lmv_foreach_tgt(lmv, tgt) ltd_foreach_tgt(&(lmv)->lmv_mdt_descs, tgt)
- if (lmv->tgts[i]->ltd_idx == mdt_idx) {
- if (index != NULL)
- *index = i;
- return lmv->tgts[i];
- }
- }
+#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;
+
+ 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 ERR_PTR(-ENODEV);
+ 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;
+
+ if (lmv->lmv_mdt_count < 2)
+ return 0;
- ltd = lmv_get_target(lmv, mdt_idx, &index);
- if (IS_ERR(ltd))
- return PTR_ERR(ltd);
+ rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
+ if (rc < 0)
+ return rc;
- return index;
+ 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)
return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
}
+/* 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)
+ int namelen, bool new_layout)
{
int stripe_index;
- stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
- lsm->lsm_md_stripe_count,
- name, namelen);
+ LASSERT(lmv_dir_striped(lsm));
+
+ 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);
- LASSERTF(stripe_index < lsm->lsm_md_stripe_count,
- "stripe_index = %d, stripe_count = %d hash_type = %x"
- "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count,
- lsm->lsm_md_hash_type, namelen, name);
-
return &lsm->lsm_md_oinfo[stripe_index];
}
-static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
+static inline bool lmv_dir_retry_check_update(struct md_op_data *op_data)
{
- return !lmv_is_known_hash_type(lsm->lsm_md_hash_type) ||
- lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
+ const struct lmv_stripe_md *lsm = op_data->op_mea1;
+
+ if (!lsm)
+ return false;
+
+ if (lmv_dir_layout_changing(lsm) && !op_data->op_new_layout) {
+ op_data->op_new_layout = true;
+ return true;
+ }
+
+ if (lmv_dir_bad_hash(lsm) &&
+ op_data->op_stripe_index < lsm->lsm_md_stripe_count - 1) {
+ op_data->op_stripe_index++;
+ return true;
+ }
+
+ return false;
}
-struct lmv_tgt_desc
-*lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
- struct lu_fid *fid);
-/* lproc_lmv.c */
-#ifdef CONFIG_PROC_FS
-extern struct lprocfs_vars lprocfs_lmv_obd_vars[];
-#endif
-extern struct file_operations lmv_proc_target_fops;
+struct lmv_tgt_desc *lmv_locate_tgt(struct lmv_obd *lmv,
+ 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
git://git.whamcloud.com / fs / lustre-release.git / blobdiff