*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_FLD
-#ifdef __KERNEL__
-# include <libcfs/libcfs.h>
-# include <linux/module.h>
-# include <linux/jbd.h>
-#else /* __KERNEL__ */
-# include <liblustre.h>
-#endif
-
-#include <obd.h>
-#include <obd_class.h>
-#include <lustre_ver.h>
+#include <libcfs/libcfs.h>
+#include <linux/module.h>
#include <obd_support.h>
-#include <lprocfs_status.h>
-
#include <dt_object.h>
-#include <md_object.h>
-#include <lustre_mdc.h>
#include <lustre_fid.h>
#include <lustre_fld.h>
#include "fld_internal.h"
-const char fld_index_name[] = "fld";
+static const char fld_index_name[] = "fld";
static const struct lu_seq_range IGIF_FLD_RANGE = {
.lsr_start = FID_SEQ_IGIF,
.lsr_flags = LU_SEQ_RANGE_MDT
};
+static const struct lu_seq_range DOT_LUSTRE_FLD_RANGE = {
+ .lsr_start = FID_SEQ_DOT_LUSTRE,
+ .lsr_end = FID_SEQ_DOT_LUSTRE + 1,
+ .lsr_index = 0,
+ .lsr_flags = LU_SEQ_RANGE_MDT
+};
+
static const struct lu_seq_range ROOT_FLD_RANGE = {
.lsr_start = FID_SEQ_ROOT,
.lsr_end = FID_SEQ_ROOT + 1,
.lsr_flags = LU_SEQ_RANGE_MDT
};
-const struct dt_index_features fld_index_features = {
+static const struct dt_index_features fld_index_features = {
.dif_flags = DT_IND_UPDATE,
- .dif_keysize_min = sizeof(seqno_t),
- .dif_keysize_max = sizeof(seqno_t),
+ .dif_keysize_min = sizeof(u64),
+ .dif_keysize_max = sizeof(u64),
.dif_recsize_min = sizeof(struct lu_seq_range),
.dif_recsize_max = sizeof(struct lu_seq_range),
.dif_ptrsize = 4
const struct lu_seq_range *new_range,
struct thandle *th)
{
- struct lu_seq_range *tmp;
- struct lu_seq_range *range;
- struct fld_thread_info *info;
- int rc = 0;
+ struct lu_seq_range *tmp;
+ struct lu_seq_range *range;
+ struct fld_thread_info *info;
+ int rc = 0;
ENTRY;
rc = fld_index_lookup(env, fld, new_range->lsr_start, range);
if (rc == 0) {
/* In case of duplicate entry, the location must be same */
- LASSERT((range_compare_loc(new_range, range) == 0));
+ LASSERT((lu_seq_range_compare_loc(new_range, range) == 0));
GOTO(out, rc = -EEXIST);
}
GOTO(out, rc);
}
- /* Check for merge case, since the fld entry can only be increamental,
- * so we will only check whether it can be merged from the left. */
+ /*
+ * Check for merge case, since the fld entry can only be increamental,
+ * so we will only check whether it can be merged from the left.
+ */
if (new_range->lsr_start == range->lsr_end && range->lsr_end != 0 &&
- range_compare_loc(new_range, range) == 0) {
+ lu_seq_range_compare_loc(new_range, range) == 0) {
range_cpu_to_be(tmp, range);
rc = dt_declare_delete(env, fld->lsf_obj,
(struct dt_key *)&tmp->lsr_start, th);
fld->lsf_name, PRANGE(range), rc);
GOTO(out, rc);
}
- memcpy(tmp, new_range, sizeof(*new_range));
+ *tmp = *new_range;
tmp->lsr_start = range->lsr_start;
} else {
- memcpy(tmp, new_range, sizeof(*new_range));
+ *tmp = *new_range;
}
range_cpu_to_be(tmp, tmp);
* changed between declare and create.
* Because the fld entry can only be increamental, so we will only check
* whether it can be merged from the left.
+ *
+ * Caller must hold fld->lsf_lock
**/
int fld_index_create(const struct lu_env *env, struct lu_server_fld *fld,
const struct lu_seq_range *new_range, struct thandle *th)
{
- struct lu_seq_range *range;
- struct lu_seq_range *tmp;
- struct fld_thread_info *info;
- int rc = 0;
- int deleted = 0;
- struct fld_cache_entry *flde;
+ struct lu_seq_range *range;
+ struct lu_seq_range *tmp;
+ struct fld_thread_info *info;
+ int rc = 0;
+ int deleted = 0;
+ struct fld_cache_entry *flde;
+
ENTRY;
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
- LASSERT_MUTEX_LOCKED(&fld->lsf_lock);
+ LASSERT(mutex_is_locked(&fld->lsf_lock));
range = &info->fti_lrange;
memset(range, 0, sizeof(*range));
}
if (new_range->lsr_start == range->lsr_end && range->lsr_end != 0 &&
- range_compare_loc(new_range, range) == 0) {
+ lu_seq_range_compare_loc(new_range, range) == 0) {
range_cpu_to_be(tmp, range);
rc = dt_delete(env, fld->lsf_obj,
- (struct dt_key *)&tmp->lsr_start, th,
- BYPASS_CAPA);
+ (struct dt_key *)&tmp->lsr_start, th);
if (rc != 0)
GOTO(out, rc);
- memcpy(tmp, new_range, sizeof(*new_range));
+ *tmp = *new_range;
tmp->lsr_start = range->lsr_start;
deleted = 1;
} else {
- memcpy(tmp, new_range, sizeof(*new_range));
+ *tmp = *new_range;
}
range_cpu_to_be(tmp, tmp);
rc = dt_insert(env, fld->lsf_obj, (struct dt_rec *)tmp,
- (struct dt_key *)&tmp->lsr_start, th, BYPASS_CAPA, 1);
+ (struct dt_key *)&tmp->lsr_start, th);
if (rc != 0) {
CERROR("%s: insert range "DRANGE" failed: rc = %d\n",
fld->lsf_name, PRANGE(new_range), rc);
* \retval -ve other error;
*/
int fld_index_lookup(const struct lu_env *env, struct lu_server_fld *fld,
- seqno_t seq, struct lu_seq_range *range)
+ u64 seq, struct lu_seq_range *range)
{
- struct lu_seq_range *fld_rec;
- struct fld_thread_info *info;
- int rc;
+ struct lu_seq_range *fld_rec;
+ struct fld_thread_info *info;
+ int rc;
- ENTRY;
+ ENTRY;
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
fld_rec = &info->fti_rec;
rc = fld_cache_lookup(fld->lsf_cache, seq, fld_rec);
if (rc == 0) {
- *range = *fld_rec;
- if (range_within(range, seq))
- rc = 0;
- else
- rc = -ENOENT;
- }
+ *range = *fld_rec;
+ if (lu_seq_range_within(range, seq))
+ rc = 0;
+ else
+ rc = -ENOENT;
+ }
- CDEBUG(D_INFO, "%s: lookup seq = "LPX64" range : "DRANGE" rc = %d\n",
- fld->lsf_name, seq, PRANGE(range), rc);
+ CDEBUG(D_INFO, "%s: lookup seq = %#llx range : "DRANGE" rc = %d\n",
+ fld->lsf_name, seq, PRANGE(range), rc);
- RETURN(rc);
+ RETURN(rc);
}
-static int fld_insert_entry(const struct lu_env *env,
- struct lu_server_fld *fld,
- const struct lu_seq_range *range)
+/**
+ * insert entry in fld store.
+ *
+ * \param env relevant lu_env
+ * \param fld fld store
+ * \param range range to be inserted
+ *
+ * \retval 0 success
+ * \retval -ve error
+ *
+ * Caller must hold fld->lsf_lock
+ **/
+
+int fld_insert_entry(const struct lu_env *env,
+ struct lu_server_fld *fld,
+ const struct lu_seq_range *range)
{
struct thandle *th;
+ struct dt_device *dt = lu2dt_dev(fld->lsf_obj->do_lu.lo_dev);
int rc;
+
ENTRY;
- th = dt_trans_create(env, lu2dt_dev(fld->lsf_obj->do_lu.lo_dev));
+ LASSERT(mutex_is_locked(&fld->lsf_lock));
+
+ if (dt->dd_rdonly)
+ RETURN(0);
+
+ th = dt_trans_create(env, dt);
if (IS_ERR(th))
RETURN(PTR_ERR(th));
GOTO(out, rc);
}
- rc = dt_trans_start_local(env, lu2dt_dev(fld->lsf_obj->do_lu.lo_dev),
- th);
+ rc = dt_trans_start_local(env, dt, th);
if (rc)
GOTO(out, rc);
if (rc == -EEXIST)
rc = 0;
out:
- dt_trans_stop(env, lu2dt_dev(fld->lsf_obj->do_lu.lo_dev), th);
+ dt_trans_stop(env, dt, th);
RETURN(rc);
}
+EXPORT_SYMBOL(fld_insert_entry);
static int fld_insert_special_entries(const struct lu_env *env,
struct lu_server_fld *fld)
if (rc != 0)
RETURN(rc);
+ rc = fld_insert_entry(env, fld, &DOT_LUSTRE_FLD_RANGE);
+ if (rc != 0)
+ RETURN(rc);
+
rc = fld_insert_entry(env, fld, &ROOT_FLD_RANGE);
RETURN(rc);
}
int fld_index_init(const struct lu_env *env, struct lu_server_fld *fld,
- struct dt_device *dt)
+ struct dt_device *dt, int type)
{
- struct dt_object *dt_obj = NULL;
- struct lu_fid fid;
- struct lu_attr *attr = NULL;
- struct lu_seq_range *range = NULL;
- struct fld_thread_info *info;
- struct dt_object_format dof;
- struct dt_it *it;
- const struct dt_it_ops *iops;
- int rc;
+ struct dt_object *dt_obj = NULL;
+ struct lu_fid fid;
+ struct lu_attr *attr = NULL;
+ struct lu_seq_range *range = NULL;
+ struct fld_thread_info *info;
+ struct dt_object_format dof;
+ struct dt_it *it;
+ const struct dt_it_ops *iops;
+ int rc;
+ u32 index;
+ int range_count = 0;
+
ENTRY;
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
lu_local_obj_fid(&fid, FLD_INDEX_OID);
OBD_ALLOC_PTR(attr);
- if (attr == NULL)
+ if (!attr)
RETURN(-ENOMEM);
- memset(attr, 0, sizeof(attr));
+ memset(attr, 0, sizeof(*attr));
attr->la_valid = LA_MODE;
attr->la_mode = S_IFREG | 0666;
dof.dof_type = DFT_INDEX;
dof.u.dof_idx.di_feat = &fld_index_features;
- dt_obj = dt_find_or_create(env, dt, &fid, &dof, attr);
+ dt_obj = dt_locate(env, dt, &fid);
if (IS_ERR(dt_obj)) {
rc = PTR_ERR(dt_obj);
- CERROR("%s: Can't find \"%s\" obj %d\n", fld->lsf_name,
- fld_index_name, rc);
dt_obj = NULL;
GOTO(out, rc);
}
+ LASSERT(dt_obj != NULL);
+ if (!dt_object_exists(dt_obj)) {
+ dt_object_put(env, dt_obj);
+ dt_obj = dt_find_or_create(env, dt, &fid, &dof, attr);
+ fld->lsf_new = 1;
+ if (IS_ERR(dt_obj)) {
+ rc = PTR_ERR(dt_obj);
+ CERROR("%s: Can't find \"%s\" obj %d\n", fld->lsf_name,
+ fld_index_name, rc);
+ dt_obj = NULL;
+ GOTO(out, rc);
+ }
+ }
+
fld->lsf_obj = dt_obj;
rc = dt_obj->do_ops->do_index_try(env, dt_obj, &fld_index_features);
if (rc != 0) {
range = &info->fti_rec;
/* Load fld entry to cache */
iops = &dt_obj->do_index_ops->dio_it;
- it = iops->init(env, dt_obj, 0, NULL);
+ it = iops->init(env, dt_obj, 0);
if (IS_ERR(it))
GOTO(out, rc = PTR_ERR(it));
rc = iops->load(env, it, 0);
+ if (rc > 0)
+ rc = 0;
+ else if (rc == 0)
+ rc = iops->next(env, it);
+
if (rc < 0)
GOTO(out_it_fini, rc);
- if (rc > 0) {
- /* Load FLD entry into server cache */
- do {
- rc = iops->rec(env, it, (struct dt_rec *)range, 0);
- if (rc != 0)
- GOTO(out_it_put, rc);
- LASSERT(range != NULL);
- range_be_to_cpu(range, range);
+ while (rc == 0) {
+ rc = iops->rec(env, it, (struct dt_rec *)range, 0);
+ if (rc != 0)
+ GOTO(out_it_put, rc);
+
+ range_be_to_cpu(range, range);
+
+ /*
+ * Newly created ldiskfs IAM indexes may include a
+ * zeroed-out key and record. Ignore it here.
+ */
+ if (range->lsr_start < range->lsr_end) {
rc = fld_cache_insert(fld->lsf_cache, range);
if (rc != 0)
GOTO(out_it_put, rc);
- rc = iops->next(env, it);
- } while (rc == 0);
+
+ range_count++;
+ }
+
+ rc = iops->next(env, it);
+ if (rc < 0)
+ GOTO(out_it_fini, rc);
}
- /* Note: fld_insert_entry will detect whether these
- * special entries already exist inside FLDB */
- mutex_lock(&fld->lsf_lock);
- rc = fld_insert_special_entries(env, fld);
- mutex_unlock(&fld->lsf_lock);
- if (rc != 0) {
- CERROR("%s: insert special entries failed!: rc = %d\n",
- fld->lsf_name, rc);
+ if (range_count == 0)
+ fld->lsf_new = 1;
+
+ rc = fld_name_to_index(fld->lsf_name, &index);
+ if (rc < 0)
GOTO(out_it_put, rc);
- }
+ else
+ rc = 0;
+ if (index == 0 && type == LU_SEQ_RANGE_MDT) {
+ /*
+ * Note: fld_insert_entry will detect whether these
+ * special entries already exist inside FLDB
+ */
+ mutex_lock(&fld->lsf_lock);
+ rc = fld_insert_special_entries(env, fld);
+ mutex_unlock(&fld->lsf_lock);
+ if (rc != 0) {
+ CERROR("%s: insert special entries failed!: rc = %d\n",
+ fld->lsf_name, rc);
+ GOTO(out_it_put, rc);
+ }
+ }
out_it_put:
iops->put(env, it);
out_it_fini:
iops->fini(env, it);
out:
- if (attr != NULL)
+ if (attr)
OBD_FREE_PTR(attr);
- if (rc != 0) {
- if (dt_obj != NULL)
- lu_object_put(env, &dt_obj->do_lu);
+ if (rc < 0) {
+ if (dt_obj)
+ dt_object_put(env, dt_obj);
fld->lsf_obj = NULL;
}
RETURN(rc);
void fld_index_fini(const struct lu_env *env, struct lu_server_fld *fld)
{
ENTRY;
- if (fld->lsf_obj != NULL) {
+ if (fld->lsf_obj) {
if (!IS_ERR(fld->lsf_obj))
- lu_object_put(env, &fld->lsf_obj->do_lu);
+ dt_object_put(env, fld->lsf_obj);
fld->lsf_obj = NULL;
}
EXIT;
}
+
+int fld_server_read(const struct lu_env *env, struct lu_server_fld *fld,
+ struct lu_seq_range *range, void *data, int data_len)
+{
+ struct lu_seq_range_array *lsra = data;
+ struct fld_thread_info *info;
+ struct dt_object *dt_obj = fld->lsf_obj;
+ struct lu_seq_range *entry;
+ struct dt_it *it;
+ const struct dt_it_ops *iops;
+ int rc;
+
+ ENTRY;
+
+ lsra->lsra_count = 0;
+ iops = &dt_obj->do_index_ops->dio_it;
+ it = iops->init(env, dt_obj, 0);
+ if (IS_ERR(it))
+ RETURN(PTR_ERR(it));
+
+ rc = iops->load(env, it, range->lsr_end);
+ if (rc <= 0)
+ GOTO(out_it_fini, rc);
+
+ info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
+ LASSERT(info != NULL);
+ entry = &info->fti_rec;
+ do {
+ rc = iops->rec(env, it, (struct dt_rec *)entry, 0);
+ if (rc != 0)
+ GOTO(out_it_put, rc);
+
+ if (offsetof(typeof(*lsra), lsra_lsr[lsra->lsra_count + 1]) >
+ data_len)
+ GOTO(out, rc = -EAGAIN);
+
+ range_be_to_cpu(entry, entry);
+ if (entry->lsr_index == range->lsr_index &&
+ entry->lsr_flags == range->lsr_flags &&
+ entry->lsr_start > range->lsr_start) {
+ lsra->lsra_lsr[lsra->lsra_count] = *entry;
+ lsra->lsra_count++;
+ }
+
+ rc = iops->next(env, it);
+ } while (rc == 0);
+ if (rc > 0)
+ rc = 0;
+out:
+ range_array_cpu_to_le(lsra, lsra);
+out_it_put:
+ iops->put(env, it);
+out_it_fini:
+ iops->fini(env, it);
+
+ RETURN(rc);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff