-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <lustre/lustre_idl.h>
#include <obd.h>
-
-#ifndef __KERNEL__
-/* XXX: dirty hack, needs to be fixed more clever way. */
-struct qstr {
- const char *name;
- size_t len;
- unsigned hashval;
-};
-#endif
+#include <lustre_lmv.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 LL_IT2STR(it) \
((it) ? ldlm_it2str((it)->it_op) : "0")
-struct lmv_inode {
- struct lu_fid li_fid; /* id of dirobj */
- mdsno_t li_mds; /* cached mdsno where @li_fid lives */
- unsigned long li_size; /* slave size value */
- int li_flags;
-};
-
-#define O_FREEING (1 << 0)
-
-struct lmv_obj {
- struct list_head lo_list;
- struct semaphore lo_guard;
- int lo_state; /* object state. */
- atomic_t lo_count; /* ref counter. */
- struct lu_fid lo_fid; /* master id of dir */
- void *lo_update; /* bitmap of status (up-to-date) */
- __u32 lo_hashtype;
- int lo_objcount; /* number of slaves */
- struct lmv_inode *lo_inodes; /* array of sub-objs */
- struct obd_device *lo_obd; /* pointer to LMV itself */
-};
-
-int lmv_obj_setup(struct obd_device *obd);
-void lmv_obj_cleanup(struct obd_device *obd);
-
-static inline void
-lmv_obj_lock(struct lmv_obj *obj)
-{
- LASSERT(obj);
- down(&obj->lo_guard);
-}
-
-static inline void
-lmv_obj_unlock(struct lmv_obj *obj)
-{
- LASSERT(obj);
- up(&obj->lo_guard);
-}
-
-void lmv_obj_add(struct lmv_obj *obj);
-void lmv_obj_del(struct lmv_obj *obj);
-
-void lmv_obj_put(struct lmv_obj *obj);
-void lmv_obj_free(struct lmv_obj *obj);
-
-struct lmv_obj *lmv_obj_get(struct lmv_obj *obj);
-
-struct lmv_obj *lmv_obj_grab(struct obd_device *obd,
- const struct lu_fid *fid);
-
-struct lmv_obj *lmv_obj_alloc(struct obd_device *obd,
- const struct lu_fid *fid,
- struct lmv_stripe_md *mea);
-
-struct lmv_obj *lmv_obj_create(struct obd_export *exp,
- const struct lu_fid *fid,
- struct lmv_stripe_md *mea);
-
-int lmv_obj_delete(struct obd_export *exp,
- const struct lu_fid *fid);
-
int lmv_check_connect(struct obd_device *obd);
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 *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 *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 *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_revalidate_slaves(struct obd_export *, struct ptlrpc_request **,
- const struct lu_fid *, struct lookup_intent *, int,
- ldlm_blocking_callback cb_blocking,
- int extra_lock_flags);
+ struct lookup_intent *it, struct ptlrpc_request **reqp,
+ ldlm_blocking_callback cb_blocking,
+ __u64 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);
-int lmv_alloc_slave_fids(struct obd_device *obd, struct lu_fid *pid,
- struct md_op_data *op, struct lu_fid *fid);
-
-static inline struct lmv_stripe_md *
-lmv_get_mea(struct ptlrpc_request *req)
-{
- struct mdt_body *body;
- struct lmv_stripe_md *mea;
-
- LASSERT(req);
-
- body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
-
- if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
- return NULL;
-
- mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD,
- body->eadatasize);
- LASSERT(mea != NULL);
+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);
- 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;
-
- return mea;
-}
+int lmv_revalidate_slaves(struct obd_export *exp,
+ const struct lmv_stripe_md *lsm,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
-static inline int lmv_get_easize(struct lmv_obd *lmv)
+static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv)
{
- return sizeof(struct lmv_stripe_md) +
- lmv->desc.ld_tgt_count *
- sizeof(struct lu_fid);
+ return container_of0(lmv, struct obd_device, u.lmv);
}
static inline struct lmv_tgt_desc *
-lmv_get_target(struct lmv_obd *lmv, mdsno_t mds)
+lmv_get_target(struct lmv_obd *lmv, u32 mdt_idx, int *index)
{
- return &lmv->tgts[mds];
+ int i;
+
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ if (lmv->tgts[i] == NULL)
+ continue;
+
+ if (lmv->tgts[i]->ltd_idx == mdt_idx) {
+ if (index != NULL)
+ *index = i;
+ return lmv->tgts[i];
+ }
+ }
+
+ return ERR_PTR(-ENODEV);
}
-static inline struct obd_export *
-lmv_get_export(struct lmv_obd *lmv, mdsno_t mds)
+static inline int
+lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- return lmv_get_target(lmv, mds)->ltd_exp;
+ 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;
}
static inline struct lmv_tgt_desc *
lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- mdsno_t mds;
- int rc;
-
- rc = lmv_fld_lookup(lmv, fid, &mds);
- if (rc)
- return ERR_PTR(rc);
-
- return lmv_get_target(lmv, mds);
+ int index;
+
+ index = lmv_find_target_index(lmv, fid);
+ if (index < 0)
+ return ERR_PTR(index);
+
+ return lmv->tgts[index];
}
-static inline struct obd_export *
-lmv_find_export(struct lmv_obd *lmv, const struct lu_fid *fid)
+static inline int lmv_stripe_md_size(int stripe_count)
{
- struct lmv_tgt_desc *tgt = lmv_find_target(lmv, fid);
- if (IS_ERR(tgt))
- return (struct obd_export *)tgt;
- return tgt->ltd_exp;
+ struct lmv_stripe_md *lsm;
+
+ return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
}
-static inline void lmv_update_body(struct mdt_body *body,
- struct lmv_inode *lino)
+static inline const struct lmv_oinfo *
+lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
+ int namelen)
{
- /* update object size */
- body->size += lino->li_size;
+ int stripe_index;
+
+ 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);
+
+ 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];
}
-/* 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)
+static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm)
{
- memset(lvars, 0, sizeof(*lvars));
+ 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;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff