+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * 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, 2016, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ */
+
#ifndef _LMV_INTERNAL_H_
#define _LMV_INTERNAL_H_
+#include <obd.h>
+#include <lustre_lmv.h>
+
+#define LMV_MAX_TGT_COUNT 128
+
#define LL_IT2STR(it) \
((it) ? ldlm_it2str((it)->it_op) : "0")
-#define MEA_SIZE_LMV(lmv) \
- ((lmv)->desc.ld_tgt_count * \
- sizeof(struct ll_fid) + sizeof(struct mea))
-
-struct lmv_inode {
- struct ll_fid fid; /* fid of dirobj */
- unsigned long size; /* slave size value */
- int flags;
-};
-
-#define O_FREEING (1 << 0)
-
-struct lmv_obj {
- struct list_head list;
- struct semaphore guard;
- int state; /* object state. */
- atomic_t count; /* ref counter. */
- struct ll_fid fid; /* master fid of dir */
- void *update; /* bitmap of status (uptodate) */
- __u32 hashtype;
- int objcount; /* number of slaves */
- struct lmv_inode *objs; /* array of dirobjs */
- struct obd_device *obd; /* pointer to LMV itself */
- unsigned long mtime;
- unsigned long ctime;
- unsigned long atime;
- unsigned long nlink;
-};
-
-static inline void
-lmv_lock_obj(struct lmv_obj *obj)
+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,
+ __u64 extra_lock_flags);
+
+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(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 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)
{
- LASSERT(obj);
- down(&obj->guard);
+ return container_of_safe(lmv, struct obd_device, u.lmv);
}
-static inline void
-lmv_unlock_obj(struct lmv_obj *obj)
+static inline struct lu_tgt_desc *
+lmv_tgt(struct lmv_obd *lmv, __u32 index)
{
- LASSERT(obj);
- up(&obj->guard);
+ return index < lmv->lmv_mdt_descs.ltd_tgts_size ?
+ LTD_TGT(&lmv->lmv_mdt_descs, index) : NULL;
}
-void lmv_add_obj(struct lmv_obj *obj);
-void lmv_del_obj(struct lmv_obj *obj);
+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);
+}
-void lmv_put_obj(struct lmv_obj *obj);
-void lmv_free_obj(struct lmv_obj *obj);
+#define lmv_foreach_tgt(lmv, tgt) ltd_foreach_tgt(&(lmv)->lmv_mdt_descs, tgt)
-int lmv_setup_mgr(struct obd_device *obd);
-void lmv_cleanup_mgr(struct obd_device *obd);
-int lmv_check_connect(struct obd_device *obd);
+#define lmv_foreach_tgt_safe(lmv, tgt, tmp) \
+ ltd_foreach_tgt_safe(&(lmv)->lmv_mdt_descs, tgt, tmp)
-struct lmv_obj *lmv_get_obj(struct lmv_obj *obj);
+static inline
+struct lu_tgt_desc *lmv_first_connected_tgt(struct lmv_obd *lmv)
+{
+ struct lu_tgt_desc *tgt;
-struct lmv_obj *lmv_grab_obj(struct obd_device *obd,
- struct ll_fid *fid);
+ tgt = ltd_first_tgt(&lmv->lmv_mdt_descs);
+ while (tgt && !tgt->ltd_exp)
+ tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt);
-struct lmv_obj *lmv_alloc_obj(struct obd_device *obd,
- struct ll_fid *fid,
- struct mea *mea);
+ return tgt;
+}
-struct lmv_obj *lmv_create_obj(struct obd_export *exp,
- struct ll_fid *fid,
- struct mea *mea);
+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);
-int lmv_delete_obj(struct obd_export *exp, struct ll_fid *fid);
+ return tgt;
+}
-int lmv_intent_lock(struct obd_export *, struct ll_uctxt *,
- struct ll_fid *, const char *, int, void *, int,
- struct ll_fid *, struct lookup_intent *, int,
- struct ptlrpc_request **, ldlm_blocking_callback);
+#define lmv_foreach_connected_tgt(lmv, tgt) \
+ for (tgt = lmv_first_connected_tgt(lmv); tgt; \
+ tgt = lmv_next_connected_tgt(lmv, tgt))
-int lmv_intent_lookup(struct obd_export *, struct ll_uctxt *,
- struct ll_fid *, const char *, int, void *, int,
- struct ll_fid *, struct lookup_intent *, int,
- struct ptlrpc_request **, ldlm_blocking_callback);
+static inline int
+lmv_fid2tgt_index(struct lmv_obd *lmv, const struct lu_fid *fid)
+{
+ u32 mdt_idx;
+ int rc;
-int lmv_intent_getattr(struct obd_export *, struct ll_uctxt *,
- struct ll_fid *, const char *, int, void *, int,
- struct ll_fid *, struct lookup_intent *, int,
- struct ptlrpc_request **, ldlm_blocking_callback);
+ if (lmv->lmv_mdt_count < 2)
+ return 0;
-int lmv_intent_open(struct obd_export *, struct ll_uctxt *,
- struct ll_fid *, const char *, int, void *, int,
- struct ll_fid *, struct lookup_intent *, int,
- struct ptlrpc_request **, ldlm_blocking_callback);
+ rc = lmv_fld_lookup(lmv, fid, &mdt_idx);
+ if (rc < 0)
+ return rc;
-int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **,
- struct ll_fid *, struct lookup_intent *, int,
- ldlm_blocking_callback cb_blocking);
+ return mdt_idx;
+}
+
+static inline struct lmv_tgt_desc *
+lmv_fid2tgt(struct lmv_obd *lmv, const struct lu_fid *fid)
+{
+ struct lu_tgt_desc *tgt;
+ int index;
+
+ index = lmv_fid2tgt_index(lmv, fid);
+ if (index < 0)
+ return ERR_PTR(index);
-int lmv_get_mea_and_update_object(struct obd_export *, struct ll_fid *);
-int lmv_dirobj_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
- void *, int);
+ tgt = lmv_tgt(lmv, index);
-static inline struct mea *
-body_of_splitted_dir(struct ptlrpc_request *req, int offset)
+ return tgt ? tgt : ERR_PTR(-ENODEV);
+}
+
+static inline int lmv_stripe_md_size(int stripe_count)
{
- struct mds_body *body;
- struct mea *mea;
+ struct lmv_stripe_md *lsm;
- LASSERT(req);
+ return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
+}
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
+/* 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 new_layout)
+{
+ int stripe_index;
- if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
- return NULL;
+ LASSERT(lmv_dir_striped(lsm));
- mea = lustre_msg_buf(req->rq_repmsg,
- offset + 1, body->eadatasize);
- LASSERT(mea);
+ 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 (mea->mea_count == 0)
- return NULL;
-
- return mea;
+ return &lsm->lsm_md_oinfo[stripe_index];
}
-static inline int
-fid_equal(struct ll_fid *fid1, struct ll_fid *fid2)
+static inline bool lmv_dir_retry_check_update(struct md_op_data *op_data)
{
- if (fid1->mds != fid2->mds)
- return 0;
- if (fid1->id != fid2->id)
- return 0;
- if (fid1->generation != fid2->generation)
- return 0;
- return 1;
+ 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;
}
-#endif
+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