-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * lustre/fid/fid_store.c
- * Lustre Sequence Manager
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (c) 2006 Cluster File Systems, Inc.
- * Author: Yury Umanets <umka@clusterfs.com>
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * You may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * In either case, Lustre is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * license text for more details.
+ * Copyright (c) 2011, 2017, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/fid/fid_store.c
+ *
+ * Lustre Sequence Manager
+ *
+ * Author: Yury Umanets <umka@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_FID
-#ifdef __KERNEL__
-# include <libcfs/libcfs.h>
-# include <linux/module.h>
-#else /* __KERNEL__ */
-# include <liblustre.h>
-#endif
-
-#include <obd.h>
-#include <obd_class.h>
+#include <libcfs/libcfs.h>
#include <dt_object.h>
-#include <md_object.h>
#include <obd_support.h>
-#include <lustre_req_layout.h>
#include <lustre_fid.h>
+#include <lustre_fld.h>
#include "fid_internal.h"
-#ifdef __KERNEL__
-enum {
- SEQ_TXN_STORE_CREDITS = 20
-};
-
static struct lu_buf *seq_store_buf(struct seq_thread_info *info)
{
struct lu_buf *buf;
return buf;
}
+struct seq_update_callback {
+ struct dt_txn_commit_cb suc_cb;
+ struct lu_server_seq *suc_seq;
+};
+
+void seq_update_cb(struct lu_env *env, struct thandle *th,
+ struct dt_txn_commit_cb *cb, int err)
+{
+ struct seq_update_callback *ccb;
+
+ ccb = container_of0(cb, struct seq_update_callback, suc_cb);
+
+ LASSERT(ccb->suc_seq != NULL);
+
+ ccb->suc_seq->lss_need_sync = 0;
+ OBD_FREE_PTR(ccb);
+}
+
+int seq_update_cb_add(struct thandle *th, struct lu_server_seq *seq)
+{
+ struct seq_update_callback *ccb;
+ struct dt_txn_commit_cb *dcb;
+ int rc;
+
+ OBD_ALLOC_PTR(ccb);
+ if (ccb == NULL)
+ return -ENOMEM;
+
+ ccb->suc_seq = seq;
+ seq->lss_need_sync = 1;
+
+ dcb = &ccb->suc_cb;
+ dcb->dcb_func = seq_update_cb;
+ INIT_LIST_HEAD(&dcb->dcb_linkage);
+ strlcpy(dcb->dcb_name, "seq_update_cb", sizeof(dcb->dcb_name));
+
+ rc = dt_trans_cb_add(th, dcb);
+ if (rc)
+ OBD_FREE_PTR(ccb);
+ return rc;
+}
+
/* This function implies that caller takes care about locking. */
-int seq_store_write(struct lu_server_seq *seq,
- const struct lu_env *env)
+int seq_store_update(const struct lu_env *env, struct lu_server_seq *seq,
+ struct lu_seq_range *out, int sync)
{
- struct dt_object *dt_obj = seq->lss_obj;
- struct seq_thread_info *info;
- struct dt_device *dt_dev;
- struct thandle *th;
- loff_t pos = 0;
+ struct dt_device *dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
+ struct seq_thread_info *info;
+ struct thandle *th;
+ loff_t pos = 0;
int rc;
- ENTRY;
-
- dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
- info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
- LASSERT(info != NULL);
- /* Stub here, will fix it later. */
- txn_param_init(&info->sti_txn, SEQ_TXN_STORE_CREDITS);
-
- th = dt_dev->dd_ops->dt_trans_start(env, dt_dev, &info->sti_txn);
- if (!IS_ERR(th)) {
- /* Store ranges in le format. */
- range_cpu_to_le(&info->sti_space, &seq->lss_space);
-
- rc = dt_obj->do_body_ops->dbo_write(env, dt_obj,
- seq_store_buf(info),
- &pos, th, BYPASS_CAPA);
- if (rc == sizeof(info->sti_space)) {
- CDEBUG(D_INFO, "%s: Space - "DRANGE"\n",
- seq->lss_name, PRANGE(&seq->lss_space));
- rc = 0;
- } else if (rc >= 0) {
- rc = -EIO;
- }
-
- dt_dev->dd_ops->dt_trans_stop(env, th);
- } else {
- rc = PTR_ERR(th);
- }
-
- RETURN(rc);
+ if (dt_dev->dd_rdonly)
+ RETURN(0);
+
+ info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
+ LASSERT(info != NULL);
+
+ th = dt_trans_create(env, dt_dev);
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
+
+ /* Store ranges in le format. */
+ range_cpu_to_le(&info->sti_space, &seq->lss_space);
+
+ rc = dt_declare_record_write(env, seq->lss_obj,
+ seq_store_buf(info), 0, th);
+ if (rc)
+ GOTO(exit, rc);
+
+ if (out != NULL) {
+ rc = fld_declare_server_create(env,
+ seq->lss_site->ss_server_fld,
+ out, th);
+ if (rc)
+ GOTO(exit, rc);
+ }
+
+ rc = dt_trans_start_local(env, dt_dev, th);
+ if (rc)
+ GOTO(exit, rc);
+
+ rc = dt_record_write(env, seq->lss_obj, seq_store_buf(info), &pos, th);
+ if (rc) {
+ CERROR("%s: Can't write space data, rc %d\n",
+ seq->lss_name, rc);
+ GOTO(exit, rc);
+ } else if (out != NULL) {
+ rc = fld_server_create(env, seq->lss_site->ss_server_fld, out,
+ th);
+ if (rc) {
+ CERROR("%s: Can't Update fld database, rc %d\n",
+ seq->lss_name, rc);
+ GOTO(exit, rc);
+ }
+ }
+ /* next sequence update will need sync until this update is committed
+ * in case of sync operation this is not needed obviously */
+ if (!sync)
+ /* if callback can't be added then sync always */
+ sync = !!seq_update_cb_add(th, seq);
+
+ th->th_sync |= sync;
+exit:
+ dt_trans_stop(env, dt_dev, th);
+ return rc;
}
/*
int seq_store_read(struct lu_server_seq *seq,
const struct lu_env *env)
{
- struct dt_object *dt_obj = seq->lss_obj;
struct seq_thread_info *info;
loff_t pos = 0;
- int rc;
- ENTRY;
+ int rc;
+ ENTRY;
info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
LASSERT(info != NULL);
- rc = dt_obj->do_body_ops->dbo_read(env, dt_obj, seq_store_buf(info),
- &pos, BYPASS_CAPA);
+ rc = dt_read(env, seq->lss_obj, seq_store_buf(info), &pos);
if (rc == sizeof(info->sti_space)) {
range_le_to_cpu(&seq->lss_space, &info->sti_space);
rc = 0;
} else if (rc == 0) {
rc = -ENODATA;
- } else if (rc >= 0) {
+ } else if (rc > 0) {
CERROR("%s: Read only %d bytes of %d\n", seq->lss_name,
rc, (int)sizeof(info->sti_space));
rc = -EIO;
}
- RETURN(rc);
+ RETURN(rc);
}
int seq_store_init(struct lu_server_seq *seq,
struct dt_device *dt)
{
struct dt_object *dt_obj;
- struct lu_fid fid;
+ struct lu_fid fid;
+ struct lu_attr attr;
+ struct dt_object_format dof;
const char *name;
int rc;
ENTRY;
- name = seq->lss_type == LUSTRE_SEQ_SERVER ?
- LUSTRE_SEQ_SRV_NAME : LUSTRE_SEQ_CTL_NAME;
+ name = seq->lss_type == LUSTRE_SEQ_SERVER ?
+ LUSTRE_SEQ_SRV_NAME : LUSTRE_SEQ_CTL_NAME;
+
+ if (seq->lss_type == LUSTRE_SEQ_SERVER)
+ lu_local_obj_fid(&fid, FID_SEQ_SRV_OID);
+ else
+ lu_local_obj_fid(&fid, FID_SEQ_CTL_OID);
- dt_obj = dt_store_open(env, dt, name, &fid);
+ memset(&attr, 0, sizeof(attr));
+ attr.la_valid = LA_MODE;
+ attr.la_mode = S_IFREG | 0666;
+ dof.dof_type = DFT_REGULAR;
+
+ dt_obj = dt_find_or_create(env, dt, &fid, &dof, &attr);
if (!IS_ERR(dt_obj)) {
seq->lss_obj = dt_obj;
- rc = 0;
+ rc = 0;
} else {
CERROR("%s: Can't find \"%s\" obj %d\n",
- seq->lss_name, name, (int)PTR_ERR(dt_obj));
+ seq->lss_name, name, (int)PTR_ERR(dt_obj));
rc = PTR_ERR(dt_obj);
}
RETURN(rc);
}
-void seq_store_fini(struct lu_server_seq *seq,
- const struct lu_env *env)
+void seq_store_fini(struct lu_server_seq *seq, const struct lu_env *env)
{
- ENTRY;
+ ENTRY;
- if (seq->lss_obj != NULL) {
- if (!IS_ERR(seq->lss_obj))
- lu_object_put(env, &seq->lss_obj->do_lu);
- seq->lss_obj = NULL;
- }
+ if (seq->lss_obj != NULL) {
+ if (!IS_ERR(seq->lss_obj))
+ dt_object_put(env, seq->lss_obj);
+ seq->lss_obj = NULL;
+ }
- EXIT;
+ EXIT;
}
-#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff