*
* 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/
#include <obd.h>
#include <obd_class.h>
#include <dt_object.h>
-#include <md_object.h>
#include <obd_support.h>
#include <lustre_req_layout.h>
#include <lustre_fid.h>
#include "fid_internal.h"
-static void seq_server_proc_fini(struct lu_server_seq *seq);
-
/* Assigns client to sequence controller node. */
-int seq_server_set_cli(struct lu_server_seq *seq,
- struct lu_client_seq *cli,
- const struct lu_env *env)
+int seq_server_set_cli(const struct lu_env *env, struct lu_server_seq *seq,
+ struct lu_client_seq *cli)
{
int rc = 0;
ENTRY;
*/
mutex_lock(&seq->lss_mutex);
- if (cli == NULL) {
- CDEBUG(D_INFO, "%s: Detached sequence client %s\n",
- seq->lss_name, cli->lcs_name);
- seq->lss_cli = cli;
- GOTO(out_up, rc = 0);
- }
+ if (cli == NULL) {
+ CDEBUG(D_INFO, "%s: Detached sequence client\n", seq->lss_name);
+ seq->lss_cli = NULL;
+ GOTO(out_up, rc = 0);
+ }
if (seq->lss_cli != NULL) {
CDEBUG(D_HA, "%s: Sequence controller is already "
* allocate \a w units of sequence from range \a from.
*/
static inline void range_alloc(struct lu_seq_range *to,
- struct lu_seq_range *from,
- __u64 width)
+ struct lu_seq_range *from,
+ __u64 width)
{
- width = min(range_space(from), width);
- to->lsr_start = from->lsr_start;
- to->lsr_end = from->lsr_start + width;
- from->lsr_start += width;
+ width = min(lu_seq_range_space(from), width);
+ to->lsr_start = from->lsr_start;
+ to->lsr_end = from->lsr_start + width;
+ from->lsr_start += width;
}
/**
int rc;
ENTRY;
- LASSERT(range_is_sane(space));
+ LASSERT(lu_seq_range_is_sane(space));
- if (range_is_exhausted(space)) {
+ if (lu_seq_range_is_exhausted(space)) {
CERROR("%s: Sequences space is exhausted\n",
seq->lss_name);
RETURN(-ENOSPC);
*
* when lss_lowater_set reaches the end it is replaced with hiwater one and
* a write operation is initiated to allocate new hiwater range.
- * if last seq write opearion is still not commited, current operation is
+ * if last seq write opearion is still not committed, current operation is
* flaged as sync write op.
*/
static int range_alloc_set(const struct lu_env *env,
- struct lu_seq_range *out,
- struct lu_server_seq *seq)
+ struct lu_seq_range *out,
+ struct lu_server_seq *seq)
{
- struct lu_seq_range *space = &seq->lss_space;
- struct lu_seq_range *loset = &seq->lss_lowater_set;
- struct lu_seq_range *hiset = &seq->lss_hiwater_set;
- int rc = 0;
+ struct lu_seq_range *space = &seq->lss_space;
+ struct lu_seq_range *loset = &seq->lss_lowater_set;
+ struct lu_seq_range *hiset = &seq->lss_hiwater_set;
+ int rc = 0;
- if (range_is_zero(loset))
- __seq_set_init(env, seq);
+ if (lu_seq_range_is_zero(loset))
+ __seq_set_init(env, seq);
- if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_ALLOC)) /* exhaust set */
- loset->lsr_start = loset->lsr_end;
+ if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_ALLOC)) /* exhaust set */
+ loset->lsr_start = loset->lsr_end;
- if (range_is_exhausted(loset)) {
- /* reached high water mark. */
+ if (lu_seq_range_is_exhausted(loset)) {
+ /* reached high water mark. */
struct lu_device *dev = seq->lss_site->ss_lu->ls_top_dev;
- int obd_num_clients = dev->ld_obd->obd_num_exports;
- __u64 set_sz;
+ int obd_num_clients = dev->ld_obd->obd_num_exports;
+ __u64 set_sz;
- /* calculate new seq width based on number of clients */
- set_sz = max(seq->lss_set_width,
- obd_num_clients * seq->lss_width);
- set_sz = min(range_space(space), set_sz);
+ /* calculate new seq width based on number of clients */
+ set_sz = max(seq->lss_set_width,
+ obd_num_clients * seq->lss_width);
+ set_sz = min(lu_seq_range_space(space), set_sz);
- /* Switch to hiwater range now */
- *loset = *hiset;
- /* allocate new hiwater range */
- range_alloc(hiset, space, set_sz);
+ /* Switch to hiwater range now */
+ *loset = *hiset;
+ /* allocate new hiwater range */
+ range_alloc(hiset, space, set_sz);
- /* update ondisk seq with new *space */
- rc = seq_store_update(env, seq, NULL, seq->lss_need_sync);
- }
+ /* update ondisk seq with new *space */
+ rc = seq_store_update(env, seq, NULL, seq->lss_need_sync);
+ }
- LASSERTF(!range_is_exhausted(loset) || range_is_sane(loset),
- DRANGE"\n", PRANGE(loset));
+ LASSERTF(!lu_seq_range_is_exhausted(loset) ||
+ lu_seq_range_is_sane(loset),
+ DRANGE"\n", PRANGE(loset));
- if (rc == 0)
- range_alloc(out, loset, seq->lss_width);
+ if (rc == 0)
+ range_alloc(out, loset, seq->lss_width);
- RETURN(rc);
+ RETURN(rc);
}
-static int __seq_server_alloc_meta(struct lu_server_seq *seq,
- struct lu_seq_range *out,
- const struct lu_env *env)
+/**
+ * Check if the sequence server has sequence avaible
+ *
+ * Check if the sequence server has sequence avaible, if not, then
+ * allocating super sequence from sequence manager (MDT0).
+ *
+ * \param[in] env execution environment
+ * \param[in] seq server sequence
+ *
+ * \retval negative errno if allocating new sequence fails
+ * \retval 0 if there is enough sequence or allocating
+ * new sequence succeeds
+ */
+int seq_server_check_and_alloc_super(const struct lu_env *env,
+ struct lu_server_seq *seq)
{
struct lu_seq_range *space = &seq->lss_space;
int rc = 0;
ENTRY;
- LASSERT(range_is_sane(space));
-
/* Check if available space ends and allocate new super seq */
- if (range_is_exhausted(space)) {
+ if (lu_seq_range_is_exhausted(space)) {
if (!seq->lss_cli) {
CERROR("%s: No sequence controller is attached.\n",
seq->lss_name);
rc = seq_client_alloc_super(seq->lss_cli, env);
if (rc) {
- CERROR("%s: Can't allocate super-sequence, rc %d\n",
- seq->lss_name, rc);
+ CDEBUG(D_HA, "%s: Can't allocate super-sequence:"
+ " rc %d\n", seq->lss_name, rc);
RETURN(rc);
}
/* Saving new range to allocation space. */
*space = seq->lss_cli->lcs_space;
- LASSERT(range_is_sane(space));
+ LASSERT(lu_seq_range_is_sane(space));
+ if (seq->lss_cli->lcs_srv == NULL) {
+ struct lu_server_fld *fld;
+
+ /* Insert it to the local FLDB */
+ fld = seq->lss_site->ss_server_fld;
+ mutex_lock(&fld->lsf_lock);
+ rc = fld_insert_entry(env, fld, space);
+ mutex_unlock(&fld->lsf_lock);
+ }
+ }
+
+ if (lu_seq_range_is_zero(&seq->lss_lowater_set))
+ __seq_set_init(env, seq);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(seq_server_check_and_alloc_super);
+
+static int __seq_server_alloc_meta(struct lu_server_seq *seq,
+ struct lu_seq_range *out,
+ const struct lu_env *env)
+{
+ struct lu_seq_range *space = &seq->lss_space;
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(lu_seq_range_is_sane(space));
+
+ rc = seq_server_check_and_alloc_super(env, seq);
+ if (rc < 0) {
+ if (rc == -EINPROGRESS) {
+ static int printed;
+
+ if (printed++ % 8 == 0)
+ LCONSOLE_INFO("%s: Waiting to contact MDT0000 "
+ "to allocate super-sequence\n",
+ seq->lss_name);
+ } else {
+ CERROR("%s: Allocated super-sequence failed: rc = %d\n",
+ seq->lss_name, rc);
+ }
+ RETURN(rc);
}
rc = range_alloc_set(env, out, seq);
{
int rc;
struct seq_server_site *ss_site;
+ struct dt_device *dev;
ENTRY;
ss_site = lu_site2seq(site);
"initialized\n");
RETURN(-EINVAL);
}
+
+ dev = lu2dt_dev(ss_site->ss_server_seq->lss_obj->do_lu.lo_dev);
+ if (dev->dd_rdonly)
+ RETURN(-EROFS);
+
rc = seq_server_alloc_meta(ss_site->ss_server_seq, out, env);
break;
case SEQ_ALLOC_SUPER:
"initialized\n");
RETURN(-EINVAL);
}
+
+ dev = lu2dt_dev(ss_site->ss_control_seq->lss_obj->do_lu.lo_dev);
+ if (dev->dd_rdonly)
+ RETURN(-EROFS);
+
rc = seq_server_alloc_super(ss_site->ss_control_seq, out, env);
break;
default:
}
struct tgt_handler seq_handlers[] = {
-TGT_SEQ_HDL(HABEO_REFERO, SEQ_QUERY, seq_handler),
+TGT_SEQ_HDL(HAS_REPLY, SEQ_QUERY, seq_handler),
};
EXPORT_SYMBOL(seq_handlers);
/* context key: seq_thread_key */
LU_CONTEXT_KEY_DEFINE(seq, LCT_MD_THREAD | LCT_DT_THREAD);
-extern const struct file_operations seq_fld_proc_seq_fops;
-
-static int seq_server_proc_init(struct lu_server_seq *seq)
+static void seq_server_debugfs_fini(struct lu_server_seq *seq)
{
-#ifdef LPROCFS
+ if (!IS_ERR_OR_NULL(seq->lss_debugfs_entry))
+ ldebugfs_remove(&seq->lss_debugfs_entry);
+}
- int rc;
- ENTRY;
+static int seq_server_debugfs_init(struct lu_server_seq *seq)
+{
+ int rc;
+ ENTRY;
- seq->lss_proc_dir = lprocfs_register(seq->lss_name,
- seq_type_proc_dir,
- NULL, NULL);
- if (IS_ERR(seq->lss_proc_dir)) {
- rc = PTR_ERR(seq->lss_proc_dir);
- RETURN(rc);
- }
+ seq->lss_debugfs_entry = ldebugfs_register(seq->lss_name,
+ seq_debugfs_dir,
+ NULL, NULL);
+ if (IS_ERR_OR_NULL(seq->lss_debugfs_entry)) {
+ rc = seq->lss_debugfs_entry ? PTR_ERR(seq->lss_debugfs_entry)
+ : -ENOMEM;
+ seq->lss_debugfs_entry = NULL;
+ RETURN(rc);
+ }
- rc = lprocfs_add_vars(seq->lss_proc_dir,
- seq_server_proc_list, seq);
- if (rc) {
- CERROR("%s: Can't init sequence manager "
- "proc, rc %d\n", seq->lss_name, rc);
- GOTO(out_cleanup, rc);
- }
+ rc = ldebugfs_add_vars(seq->lss_debugfs_entry,
+ seq_server_debugfs_list, seq);
+ if (rc) {
+ CERROR("%s: Can't init sequence manager debugfs, rc %d\n",
+ seq->lss_name, rc);
+ GOTO(out_cleanup, rc);
+ }
if (seq->lss_type == LUSTRE_SEQ_CONTROLLER) {
- rc = lprocfs_seq_create(seq->lss_proc_dir, "fldb", 0644,
- &seq_fld_proc_seq_fops, seq);
+ rc = ldebugfs_seq_create(seq->lss_debugfs_entry, "fldb", 0644,
+ &seq_fld_debugfs_seq_fops, seq);
if (rc) {
- CERROR("%s: Can't create fldb for sequence manager "
- "proc: rc = %d\n", seq->lss_name, rc);
+ CERROR("%s: Can't create fldb for sequence manager debugfs: rc = %d\n",
+ seq->lss_name, rc);
GOTO(out_cleanup, rc);
}
}
- RETURN(0);
+ RETURN(0);
out_cleanup:
- seq_server_proc_fini(seq);
- return rc;
-#else /* LPROCFS */
- return 0;
-#endif
+ seq_server_debugfs_fini(seq);
+ return rc;
}
-static void seq_server_proc_fini(struct lu_server_seq *seq)
-{
-#ifdef LPROCFS
- ENTRY;
- if (seq->lss_proc_dir != NULL) {
- if (!IS_ERR(seq->lss_proc_dir))
- lprocfs_remove(&seq->lss_proc_dir);
- seq->lss_proc_dir = NULL;
- }
- EXIT;
-#endif /* LPROCFS */
-}
-
-int seq_server_init(struct lu_server_seq *seq,
+int seq_server_init(const struct lu_env *env,
+ struct lu_server_seq *seq,
struct dt_device *dev,
const char *prefix,
enum lu_mgr_type type,
- struct seq_server_site *ss,
- const struct lu_env *env)
+ struct seq_server_site *ss)
{
int rc, is_srv = (type == LUSTRE_SEQ_SERVER);
ENTRY;
seq->lss_cli = NULL;
seq->lss_type = type;
seq->lss_site = ss;
- range_init(&seq->lss_space);
+ lu_seq_range_init(&seq->lss_space);
- range_init(&seq->lss_lowater_set);
- range_init(&seq->lss_hiwater_set);
- seq->lss_set_width = LUSTRE_SEQ_BATCH_WIDTH;
+ lu_seq_range_init(&seq->lss_lowater_set);
+ lu_seq_range_init(&seq->lss_hiwater_set);
+ seq->lss_set_width = LUSTRE_SEQ_BATCH_WIDTH;
mutex_init(&seq->lss_mutex);
GOTO(out, rc);
}
- if (is_srv) {
- LASSERT(range_is_sane(&seq->lss_space));
- } else {
- LASSERT(!range_is_zero(&seq->lss_space) &&
- range_is_sane(&seq->lss_space));
- }
+ if (is_srv) {
+ LASSERT(lu_seq_range_is_sane(&seq->lss_space));
+ } else {
+ LASSERT(!lu_seq_range_is_zero(&seq->lss_space) &&
+ lu_seq_range_is_sane(&seq->lss_space));
+ }
- rc = seq_server_proc_init(seq);
+ rc = seq_server_debugfs_init(seq);
if (rc)
GOTO(out, rc);
{
ENTRY;
- seq_server_proc_fini(seq);
+ seq_server_debugfs_fini(seq);
seq_store_fini(seq, env);
EXIT;
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