/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2002, 2003, 2004 Cluster File Systems, Inc.
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * 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 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 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.
+ * 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
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * Copyright (c) 2011 Whamcloud, Inc.
+ */
+/*
+ * 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_
+#include <lustre/lustre_idl.h>
+#include <obd.h>
+
#define LMV_MAX_TGT_COUNT 128
-#define lmv_init_lock(lmv) down(&lmv->init_sem);
-#define lmv_init_unlock(lmv) up(&lmv->init_sem);
+#define lmv_init_lock(lmv) cfs_down(&lmv->init_sem);
+#define lmv_init_unlock(lmv) cfs_up(&lmv->init_sem);
#define LL_IT2STR(it) \
((it) ? ldlm_it2str((it)->it_op) : "0")
-#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;
+struct lmv_stripe {
+ /**
+ * Dir stripe fid.
+ */
+ struct lu_fid ls_fid;
+ /**
+ * Cached home mds number for \a li_fid.
+ */
+ mdsno_t ls_mds;
+ /**
+ * Stripe object size.
+ */
+ unsigned long ls_size;
+ /**
+ * Stripe flags.
+ */
+ int ls_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 (up-to-date) */
- __u32 hashtype;
- int objcount; /* number of slaves */
- struct lmv_inode *objs; /* array of dirobjs */
- struct obd_device *obd; /* pointer to LMV itself */
+#define O_FREEING (1 << 0)
+
+struct lmv_object {
+ /**
+ * Link to global objects list.
+ */
+ cfs_list_t lo_list;
+ /**
+ * Sema for protecting fields.
+ */
+ cfs_semaphore_t lo_guard;
+ /**
+ * Object state like O_FREEING.
+ */
+ int lo_state;
+ /**
+ * Object ref counter.
+ */
+ cfs_atomic_t lo_count;
+ /**
+ * Object master fid.
+ */
+ struct lu_fid lo_fid;
+ /**
+ * Object hash type to find stripe by name.
+ */
+ __u32 lo_hashtype;
+ /**
+ * Number of stripes.
+ */
+ int lo_objcount;
+ /**
+ * Array of sub-objs.
+ */
+ struct lmv_stripe *lo_stripes;
+ /**
+ * Pointer to LMV obd.
+ */
+ struct obd_device *lo_obd;
};
+int lmv_object_setup(struct obd_device *obd);
+void lmv_object_cleanup(struct obd_device *obd);
+
static inline void
-lmv_lock_obj(struct lmv_obj *obj)
+lmv_object_lock(struct lmv_object *obj)
{
LASSERT(obj);
- down(&obj->guard);
+ cfs_down(&obj->lo_guard);
}
static inline void
-lmv_unlock_obj(struct lmv_obj *obj)
+lmv_object_unlock(struct lmv_object *obj)
{
LASSERT(obj);
- up(&obj->guard);
+ cfs_up(&obj->lo_guard);
}
-void lmv_add_obj(struct lmv_obj *obj);
-void lmv_del_obj(struct lmv_obj *obj);
+void lmv_object_add(struct lmv_object *obj);
+void lmv_object_del(struct lmv_object *obj);
-void lmv_put_obj(struct lmv_obj *obj);
-void lmv_free_obj(struct lmv_obj *obj);
+void lmv_object_put(struct lmv_object *obj);
+void lmv_object_put_unlock(struct lmv_object *obj);
+void lmv_object_free(struct lmv_object *obj);
-int lmv_setup_mgr(struct obd_device *obd);
-void lmv_cleanup_mgr(struct obd_device *obd);
-int lmv_check_connect(struct obd_device *obd);
+struct lmv_object *lmv_object_get(struct lmv_object *obj);
+
+struct lmv_object *lmv_object_find(struct obd_device *obd,
+ const struct lu_fid *fid);
-struct lmv_obj *lmv_get_obj(struct lmv_obj *obj);
+struct lmv_object *lmv_object_find_lock(struct obd_device *obd,
+ const struct lu_fid *fid);
-struct lmv_obj *lmv_grab_obj(struct obd_device *obd,
- struct lustre_id *id);
+struct lmv_object *lmv_object_alloc(struct obd_device *obd,
+ const struct lu_fid *fid,
+ struct lmv_stripe_md *mea);
-struct lmv_obj *lmv_alloc_obj(struct obd_device *obd,
- struct lustre_id *id,
- struct mea *mea);
+struct lmv_object *lmv_object_create(struct obd_export *exp,
+ const struct lu_fid *fid,
+ struct lmv_stripe_md *mea);
-struct lmv_obj *lmv_create_obj(struct obd_export *exp,
- struct lustre_id *id,
- struct mea *mea);
+int lmv_object_delete(struct obd_export *exp,
+ const struct lu_fid *fid);
-int lmv_delete_obj(struct obd_export *exp, struct lustre_id *id);
+int lmv_check_connect(struct obd_device *obd);
-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);
+int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
+ void *lmm, int lmmsize, struct lookup_intent *it,
+ int flags, struct ptlrpc_request **reqp,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
-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);
+int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
+ void *lmm, int lmmsize, struct lookup_intent *it,
+ int flags, struct ptlrpc_request **reqp,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
-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);
+int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
+ void *lmm, int lmmsize, struct lookup_intent *it,
+ int flags, struct ptlrpc_request **reqp,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
-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);
+int lmv_allocate_slaves(struct obd_device *obd, struct lu_fid *pid,
+ struct md_op_data *op, struct lu_fid *fid);
int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **,
- struct lustre_id *, struct lookup_intent *, int,
- ldlm_blocking_callback cb_blocking);
+ const struct lu_fid *, struct lookup_intent *, int,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
+
+int lmv_handle_split(struct obd_export *, const struct lu_fid *);
+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,
+ mdsno_t *mds);
+int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
+ mdsno_t mds);
+int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
+ struct md_op_data *op_data);
+
+static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req)
+{
+ struct mdt_body *body;
+ struct lmv_stripe_md *mea;
-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);
+ LASSERT(req != NULL);
-static inline struct mea *
-lmv_splitted_dir_body(struct ptlrpc_request *req, int offset)
-{
- struct mds_body *body;
- struct mea *mea;
+ body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
+
+ if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
+ return NULL;
- LASSERT(req);
+ mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD,
+ body->eadatasize);
+ LASSERT(mea != NULL);
- body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
+ if (mea->mea_count == 0)
+ return NULL;
+ if( mea->mea_magic != MEA_MAGIC_LAST_CHAR &&
+ mea->mea_magic != MEA_MAGIC_ALL_CHARS &&
+ mea->mea_magic != MEA_MAGIC_HASH_SEGMENT)
+ return NULL;
- if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
- return NULL;
+ return mea;
+}
- mea = lustre_msg_buf(req->rq_repmsg, offset + 1,
- body->eadatasize);
- LASSERT(mea);
+static inline int lmv_get_easize(struct lmv_obd *lmv)
+{
+ return sizeof(struct lmv_stripe_md) +
+ lmv->desc.ld_tgt_count *
+ sizeof(struct lu_fid);
+}
- if (mea->mea_count == 0)
- return NULL;
-
- return mea;
+static inline struct lmv_tgt_desc *
+lmv_get_target(struct lmv_obd *lmv, mdsno_t mds)
+{
+ return &lmv->tgts[mds];
+}
+
+static inline struct lmv_tgt_desc *
+lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
+{
+ mdsno_t mds = 0;
+ int rc;
+
+ if (lmv->desc.ld_tgt_count > 1) {
+ rc = lmv_fld_lookup(lmv, fid, &mds);
+ if (rc)
+ return ERR_PTR(rc);
+ }
+
+ return lmv_get_target(lmv, mds);
}
/* lproc_lmv.c */
+#ifdef LPROCFS
+void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars);
+#else
+static inline void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
+{
+ memset(lvars, 0, sizeof(*lvars));
+}
+#endif
extern struct file_operations lmv_proc_target_fops;
#endif
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff