-/* -*- 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.
/*
* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
- */
-/*
- * Copyright (c) 2011 Whamcloud, Inc.
+ *
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <lustre/lustre_idl.h>
#include <obd.h>
+#include <lustre_lmv.h>
#define LMV_MAX_TGT_COUNT 128
-#define lmv_init_lock(lmv) cfs_down(&lmv->init_sem);
-#define lmv_init_unlock(lmv) cfs_up(&lmv->init_sem);
+#define lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex);
+#define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex);
#define LL_IT2STR(it) \
((it) ? ldlm_it2str((it)->it_op) : "0")
-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_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_object_lock(struct lmv_object *obj)
-{
- LASSERT(obj);
- cfs_down(&obj->lo_guard);
-}
-
-static inline void
-lmv_object_unlock(struct lmv_object *obj)
-{
- LASSERT(obj);
- cfs_up(&obj->lo_guard);
-}
-
-void lmv_object_add(struct lmv_object *obj);
-void lmv_object_del(struct lmv_object *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);
-
-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_object *lmv_object_find_lock(struct obd_device *obd,
- const struct lu_fid *fid);
-
-struct lmv_object *lmv_object_alloc(struct obd_device *obd,
- const struct lu_fid *fid,
- struct lmv_stripe_md *mea);
-
-struct lmv_object *lmv_object_create(struct obd_export *exp,
- const struct lu_fid *fid,
- struct lmv_stripe_md *mea);
-
-int lmv_object_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);
+ struct lookup_intent *it, struct ptlrpc_request **reqp,
+ ldlm_blocking_callback cb_blocking,
+ __u64 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_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 **,
- 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_fid_alloc(const struct lu_env *env, struct obd_export *exp,
+ struct lu_fid *fid, struct md_op_data *op_data);
- LASSERT(req != NULL);
+int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
+ const union lmv_mds_md *lmm, int stripe_count);
- body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
+int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody,
+ struct lmv_stripe_md *lsm,
+ ldlm_blocking_callback cb_blocking,
+ int extra_lock_flags);
- if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
- return NULL;
+static inline struct lmv_tgt_desc *
+lmv_get_target(struct lmv_obd *lmv, mdsno_t mdt_idx, int *index)
+{
+ int i;
- mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD,
- body->eadatasize);
- LASSERT(mea != NULL);
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ if (lmv->tgts[i] == NULL)
+ continue;
- 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 (lmv->tgts[i]->ltd_idx == mdt_idx) {
+ if (index != NULL)
+ *index = i;
+ return lmv->tgts[i];
+ }
+ }
- return mea;
+ return ERR_PTR(-ENODEV);
}
-static inline int lmv_get_easize(struct lmv_obd *lmv)
+static inline int
+lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- return sizeof(struct lmv_stripe_md) +
- lmv->desc.ld_tgt_count *
- sizeof(struct lu_fid);
+ struct lmv_tgt_desc *ltd;
+ mdsno_t 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_get_target(struct lmv_obd *lmv, mdsno_t mds)
+lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
{
- return &lmv->tgts[mds];
+ int index;
+
+ index = lmv_find_target_index(lmv, fid);
+ if (index < 0)
+ return ERR_PTR(index);
+
+ return lmv->tgts[index];
}
-static inline struct lmv_tgt_desc *
-lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
+static inline int lmv_stripe_md_size(int stripe_count)
{
- mdsno_t mds = 0;
- int rc;
+ struct lmv_stripe_md *lsm;
- if (lmv->desc.ld_tgt_count > 1) {
- rc = lmv_fld_lookup(lmv, fid, &mds);
- if (rc)
- return ERR_PTR(rc);
- }
+ return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]);
+}
+
+int lmv_name_to_stripe_index(enum lmv_hash_type hashtype,
+ unsigned int max_mdt_index,
+ const char *name, int namelen);
- return lmv_get_target(lmv, mds);
+static inline const struct lmv_oinfo *
+lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name,
+ int namelen)
+{
+ 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];
}
+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 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));
-}
+extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[];
#endif
extern struct file_operations lmv_proc_target_fops;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff