-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2002, 2003, 2004 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License 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).
*
- * Lustre 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 for more details.
+ * 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
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2015, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef _LMV_INTERNAL_H_
#define _LMV_INTERNAL_H_
-#define LL_IT2STR(it) \
- ((it) ? ldlm_it2str((it)->it_op) : "0")
+#include <lustre/lustre_idl.h>
+#include <obd.h>
+#include <lustre_lmv.h>
-#define MEA_SIZE_LMV(lmv) \
- ((lmv)->desc.ld_tgt_count * \
- sizeof(struct lustre_id) + sizeof(struct mea))
-
-struct lmv_inode {
- struct lustre_id id; /* id 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 lustre_id id; /* master id 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)
-{
- LASSERT(obj);
- down(&obj->guard);
-}
+#define LMV_MAX_TGT_COUNT 128
-static inline void
-lmv_unlock_obj(struct lmv_obj *obj)
-{
- LASSERT(obj);
- up(&obj->guard);
-}
+#define LL_IT2STR(it) \
+ ((it) ? ldlm_it2str((it)->it_op) : "0")
-void lmv_add_obj(struct lmv_obj *obj);
-void lmv_del_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);
-void lmv_put_obj(struct lmv_obj *obj);
-void lmv_free_obj(struct lmv_obj *obj);
+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_setup_mgr(struct obd_device *obd);
-void lmv_cleanup_mgr(struct obd_device *obd);
-int lmv_check_connect(struct obd_device *obd);
+int lmv_revalidate_slaves(struct obd_export *exp,
+ const struct lmv_stripe_md *lsm,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
-struct lmv_obj *lmv_get_obj(struct lmv_obj *obj);
+static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
+{
+ return container_of0(lmv, struct obd_device, u.lmv);
+}
-struct lmv_obj *lmv_grab_obj(struct obd_device *obd,
- struct lustre_id *id);
+static inline struct lmv_tgt_desc *
+lmv_get_target(struct lmv_obd *lmv, u32 mdt_idx, int *index)
+{
+ int i;
-struct lmv_obj *lmv_alloc_obj(struct obd_device *obd,
- struct lustre_id *id,
- struct mea *mea);
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ if (lmv->tgts[i] == NULL)
+ continue;
-struct lmv_obj *lmv_create_obj(struct obd_export *exp,
- struct lustre_id *id,
- struct mea *mea);
+ if (lmv->tgts[i]->ltd_idx == mdt_idx) {
+ if (index != NULL)
+ *index = i;
+ return lmv->tgts[i];
+ }
+ }
-int lmv_delete_obj(struct obd_export *exp, struct lustre_id *id);
+ return ERR_PTR(-ENODEV);
+}
-int lmv_intent_lock(struct obd_export *, struct lustre_id *,
- const char *, int, void *, int,
- struct lustre_id *, struct lookup_intent *, int,
- struct ptlrpc_request **, ldlm_blocking_callback);
+static inline int
+lmv_find_target_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;
+ }
+
+ ltd = lmv_get_target(lmv, mdt_idx, &index);
+ if (IS_ERR(ltd))
+ return PTR_ERR(ltd);
+
+ return index;
+}
-int lmv_intent_lookup(struct obd_export *, struct lustre_id *,
- const char *, int, void *, int,
- struct lustre_id *, struct lookup_intent *, int,
- struct ptlrpc_request **, ldlm_blocking_callback);
+static inline struct lmv_tgt_desc *
+lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
+{
+ int index;
-int lmv_intent_getattr(struct obd_export *, struct lustre_id *,
- const char *, int, void *, int,
- struct lustre_id *, struct lookup_intent *, int,
- struct ptlrpc_request **, ldlm_blocking_callback);
+ index = lmv_find_target_index(lmv, fid);
+ if (index < 0)
+ return ERR_PTR(index);
-int lmv_intent_open(struct obd_export *, struct lustre_id *, const char *,
- int, void *, int, struct lustre_id *, struct lookup_intent *,
- int, struct ptlrpc_request **, ldlm_blocking_callback);
+ return lmv->tgts[index];
+}
-int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **,
- struct lustre_id *, struct lookup_intent *, int,
- ldlm_blocking_callback cb_blocking);
+static inline int lmv_stripe_md_size(int stripe_count)
+{
+ struct lmv_stripe_md *lsm;
-int lmv_get_mea_and_update_object(struct obd_export *, struct lustre_id *);
-int lmv_dirobj_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
- void *, int);
+ return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
+}
-static inline struct mea *
-lmv_splitted_dir_body(struct ptlrpc_request *req, int offset)
+static inline const struct lmv_oinfo *
+lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
+ int namelen)
{
- struct mds_body *body;
- struct mea *mea;
-
- LASSERT(req);
+ int stripe_index;
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
+ stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type,
+ lsm->lsm_md_stripe_count,
+ name, namelen);
+ if (stripe_index < 0)
+ return ERR_PTR(stripe_index);
- if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
- return NULL;
+ 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);
- mea = lustre_msg_buf(req->rq_repmsg, offset + 1,
- body->eadatasize);
- LASSERT(mea);
+ return &lsm->lsm_md_oinfo[stripe_index];
+}
- if (mea->mea_count == 0)
- return NULL;
-
- return mea;
+static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
+{
+ return !lmv_is_known_hash_type(lsm->lsm_md_hash_type) ||
+ lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION;
}
+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;
#endif
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff