* Copyright (c) 2007, 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/
#ifdef __KERNEL__
# include <libcfs/libcfs.h>
# include <linux/module.h>
-# include <linux/jbd.h>
# include <asm/div64.h>
#else /* __KERNEL__ */
# include <liblustre.h>
#include <obd.h>
#include <obd_class.h>
-#include <lustre_ver.h>
#include <obd_support.h>
#include <lprocfs_status.h>
-
-#include <dt_object.h>
-#include <md_object.h>
#include <lustre_req_layout.h>
#include <lustre_fld.h>
#include <lustre_mdc.h>
int hash;
ENTRY;
- hash = fld_rrb_hash(fld, seq);
+ /* Because almost all of special sequence located in MDT0,
+ * it should go to index 0 directly, instead of calculating
+ * hash again, and also if other MDTs is not being connected,
+ * the fld lookup requests(for seq on MDT0) should not be
+ * blocked because of other MDTs */
+ if (fid_seq_is_norm(seq))
+ hash = fld_rrb_hash(fld, seq);
+ else
+ hash = 0;
cfs_list_for_each_entry(target, &fld->lcf_targets, ft_chain) {
if (target->ft_idx == hash)
};
static struct lu_fld_target *
-fld_client_get_target(struct lu_client_fld *fld,
- seqno_t seq)
+fld_client_get_target(struct lu_client_fld *fld, seqno_t seq)
{
- struct lu_fld_target *target;
- ENTRY;
+ struct lu_fld_target *target;
+ ENTRY;
- LASSERT(fld->lcf_hash != NULL);
+ LASSERT(fld->lcf_hash != NULL);
- cfs_spin_lock(&fld->lcf_lock);
- target = fld->lcf_hash->fh_scan_func(fld, seq);
- cfs_spin_unlock(&fld->lcf_lock);
+ spin_lock(&fld->lcf_lock);
+ target = fld->lcf_hash->fh_scan_func(fld, seq);
+ spin_unlock(&fld->lcf_lock);
if (target != NULL) {
CDEBUG(D_INFO, "%s: Found target (idx "LPU64
int fld_client_add_target(struct lu_client_fld *fld,
struct lu_fld_target *tar)
{
- const char *name = fld_target_name(tar);
+ const char *name;
struct lu_fld_target *target, *tmp;
ENTRY;
LASSERT(tar != NULL);
+ name = fld_target_name(tar);
LASSERT(name != NULL);
LASSERT(tar->ft_srv != NULL || tar->ft_exp != NULL);
if (target == NULL)
RETURN(-ENOMEM);
- cfs_spin_lock(&fld->lcf_lock);
- cfs_list_for_each_entry(tmp, &fld->lcf_targets, ft_chain) {
- if (tmp->ft_idx == tar->ft_idx) {
- cfs_spin_unlock(&fld->lcf_lock);
+ spin_lock(&fld->lcf_lock);
+ cfs_list_for_each_entry(tmp, &fld->lcf_targets, ft_chain) {
+ if (tmp->ft_idx == tar->ft_idx) {
+ spin_unlock(&fld->lcf_lock);
OBD_FREE_PTR(target);
CERROR("Target %s exists in FLD and known as %s:#"LPU64"\n",
name, fld_target_name(tmp), tmp->ft_idx);
&fld->lcf_targets);
fld->lcf_count++;
- cfs_spin_unlock(&fld->lcf_lock);
+ spin_unlock(&fld->lcf_lock);
- RETURN(0);
+ RETURN(0);
}
EXPORT_SYMBOL(fld_client_add_target);
/* Remove export from FLD */
-int fld_client_del_target(struct lu_client_fld *fld,
- __u64 idx)
+int fld_client_del_target(struct lu_client_fld *fld, __u64 idx)
{
- struct lu_fld_target *target, *tmp;
- ENTRY;
+ struct lu_fld_target *target, *tmp;
+ ENTRY;
- cfs_spin_lock(&fld->lcf_lock);
- cfs_list_for_each_entry_safe(target, tmp,
- &fld->lcf_targets, ft_chain) {
- if (target->ft_idx == idx) {
- fld->lcf_count--;
- cfs_list_del(&target->ft_chain);
- cfs_spin_unlock(&fld->lcf_lock);
+ spin_lock(&fld->lcf_lock);
+ cfs_list_for_each_entry_safe(target, tmp,
+ &fld->lcf_targets, ft_chain) {
+ if (target->ft_idx == idx) {
+ fld->lcf_count--;
+ cfs_list_del(&target->ft_chain);
+ spin_unlock(&fld->lcf_lock);
if (target->ft_exp != NULL)
class_export_put(target->ft_exp);
RETURN(0);
}
}
- cfs_spin_unlock(&fld->lcf_lock);
- RETURN(-ENOENT);
+ spin_unlock(&fld->lcf_lock);
+ RETURN(-ENOENT);
}
EXPORT_SYMBOL(fld_client_del_target);
}
fld->lcf_count = 0;
- cfs_spin_lock_init(&fld->lcf_lock);
+ spin_lock_init(&fld->lcf_lock);
fld->lcf_hash = &fld_hash[hash];
fld->lcf_flags = LUSTRE_FLD_INIT;
CFS_INIT_LIST_HEAD(&fld->lcf_targets);
void fld_client_fini(struct lu_client_fld *fld)
{
- struct lu_fld_target *target, *tmp;
- ENTRY;
+ struct lu_fld_target *target, *tmp;
+ ENTRY;
- cfs_spin_lock(&fld->lcf_lock);
+ spin_lock(&fld->lcf_lock);
cfs_list_for_each_entry_safe(target, tmp,
&fld->lcf_targets, ft_chain) {
fld->lcf_count--;
class_export_put(target->ft_exp);
OBD_FREE_PTR(target);
}
- cfs_spin_unlock(&fld->lcf_lock);
+ spin_unlock(&fld->lcf_lock);
if (fld->lcf_cache != NULL) {
if (!IS_ERR(fld->lcf_cache))
int fld_client_rpc(struct obd_export *exp,
struct lu_seq_range *range, __u32 fld_op)
{
- struct ptlrpc_request *req;
- struct lu_seq_range *prange;
- __u32 *op;
- int rc;
- ENTRY;
-
- LASSERT(exp != NULL);
-
- req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_FLD_QUERY,
- LUSTRE_MDS_VERSION, FLD_QUERY);
+ struct ptlrpc_request *req;
+ struct lu_seq_range *prange;
+ __u32 *op;
+ int rc;
+ struct obd_import *imp;
+ ENTRY;
+
+ LASSERT(exp != NULL);
+
+ imp = class_exp2cliimp(exp);
+ req = ptlrpc_request_alloc_pack(imp, &RQF_FLD_QUERY, LUSTRE_MDS_VERSION,
+ FLD_QUERY);
if (req == NULL)
RETURN(-ENOMEM);
req->rq_request_portal = FLD_REQUEST_PORTAL;
ptlrpc_at_set_req_timeout(req);
+ if (fld_op == FLD_LOOKUP &&
+ imp->imp_connect_flags_orig & OBD_CONNECT_MDS_MDS)
+ req->rq_allow_replay = 1;
+
if (fld_op != FLD_LOOKUP)
mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
fld_enter_request(&exp->exp_obd->u.cli);
}
int fld_client_lookup(struct lu_client_fld *fld, seqno_t seq, mdsno_t *mds,
- __u32 flags, const struct lu_env *env)
+ __u32 flags, const struct lu_env *env)
{
- struct lu_seq_range res;
- struct lu_fld_target *target;
- int rc;
- ENTRY;
+ struct lu_seq_range res = { 0 };
+ struct lu_fld_target *target;
+ int rc;
+ ENTRY;
fld->lcf_flags |= LUSTRE_FLD_RUN;
"target %s (idx "LPU64")\n", fld->lcf_name, seq,
fld_target_name(target), target->ft_idx);
- res.lsr_start = seq;
- res.lsr_flags = flags;
-#ifdef __KERNEL__
- if (target->ft_srv != NULL) {
- LASSERT(env != NULL);
- rc = fld_server_lookup(target->ft_srv,
- env, seq, &res);
- } else {
-#endif
- rc = fld_client_rpc(target->ft_exp,
- &res, FLD_LOOKUP);
-#ifdef __KERNEL__
- }
+ res.lsr_start = seq;
+ fld_range_set_type(&res, flags);
+
+#if defined(__KERNEL__) && defined(HAVE_SERVER_SUPPORT)
+ if (target->ft_srv != NULL) {
+ LASSERT(env != NULL);
+ rc = fld_server_lookup(env, target->ft_srv, seq, &res);
+ } else
#endif
+ {
+ rc = fld_client_rpc(target->ft_exp, &res, FLD_LOOKUP);
+ }
- if (rc == 0) {
- *mds = res.lsr_index;
+ if (rc == 0) {
+ *mds = res.lsr_index;
+ fld_cache_insert(fld->lcf_cache, &res);
+ }
- fld_cache_insert(fld->lcf_cache, &res);
- }
- RETURN(rc);
+ RETURN(rc);
}
EXPORT_SYMBOL(fld_client_lookup);
fld_cache_flush(fld->lcf_cache);
}
EXPORT_SYMBOL(fld_client_flush);
+
+#ifdef __KERNEL__
+
+struct proc_dir_entry *fld_type_proc_dir;
+
+static int __init fld_mod_init(void)
+{
+ fld_type_proc_dir = lprocfs_register(LUSTRE_FLD_NAME,
+ proc_lustre_root,
+ NULL, NULL);
+ if (IS_ERR(fld_type_proc_dir))
+ return PTR_ERR(fld_type_proc_dir);
+
+#ifdef HAVE_SERVER_SUPPORT
+ fld_server_mod_init();
+#endif
+
+ return 0;
+}
+
+static void __exit fld_mod_exit(void)
+{
+#ifdef HAVE_SERVER_SUPPORT
+ fld_server_mod_exit();
+#endif
+
+ if (fld_type_proc_dir != NULL && !IS_ERR(fld_type_proc_dir)) {
+ lprocfs_remove(&fld_type_proc_dir);
+ fld_type_proc_dir = NULL;
+ }
+}
+
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Lustre FLD");
+MODULE_LICENSE("GPL");
+
+cfs_module(mdd, LUSTRE_VERSION_STRING, fld_mod_init, fld_mod_exit);
+#endif /* __KERNEL__ */