-/* -*- 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) 2002, 2003 Cluster File Systems, Inc.
+ * 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 Lustre, http://www.lustre.org.
+ * 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).
*
- * Lustre is free 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.
+ * 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
*
- * 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
- * GNU General Public License for more details.
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_LMV
#ifdef __KERNEL__
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
+#include <linux/mm.h>
#include <asm/div64.h>
#include <linux/seq_file.h>
#include <linux/namei.h>
#else
#include <liblustre.h>
#endif
-#include <linux/ext2_fs.h>
-
-#include <linux/obd_support.h>
-#include <linux/lustre_lib.h>
-#include <linux/lustre_net.h>
-#include <linux/lustre_idl.h>
-#include <linux/lustre_dlm.h>
-#include <linux/lustre_mds.h>
-#include <linux/obd_class.h>
-#include <linux/obd_ost.h>
-#include <linux/lprocfs_status.h>
-#include <linux/lustre_fsfilt.h>
-#include <linux/obd_lmv.h>
-#include <linux/lustre_lite.h>
-#include <linux/lustre_audit.h>
-#include "lmv_internal.h"
-/* not defined for liblustre building */
-#if !defined(ATOMIC_INIT)
-#define ATOMIC_INIT(val) { (val) }
-#endif
+#include <lustre_log.h>
+#include <obd_support.h>
+#include <lustre_lib.h>
+#include <lustre_net.h>
+#include <obd_class.h>
+#include <lprocfs_status.h>
+#include <lustre_lite.h>
+#include <lustre_fid.h>
+#include "lmv_internal.h"
/* object cache. */
-kmem_cache_t *obj_cache;
-atomic_t obj_cache_count = ATOMIC_INIT(0);
+cfs_mem_cache_t *lmv_object_cache;
+cfs_atomic_t lmv_object_count = CFS_ATOMIC_INIT(0);
static void lmv_activate_target(struct lmv_obd *lmv,
struct lmv_tgt_desc *tgt,
int activate)
{
- if (tgt->active == activate)
+ if (tgt->ltd_active == activate)
return;
-
- tgt->active = activate;
+
+ tgt->ltd_active = activate;
lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
}
-/* Error codes:
+/**
+ * Error codes:
*
* -EINVAL : UUID can't be found in the LMV's target list
* -ENOTCONN: The UUID is found, but the target connection is bad (!)
static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid,
int activate)
{
- struct lmv_tgt_desc *tgt;
- struct obd_device *obd;
- int i, rc = 0;
+ struct lmv_tgt_desc *tgt;
+ struct obd_device *obd;
+ int i;
+ int rc = 0;
ENTRY;
CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
lmv, uuid->uuid, activate);
- spin_lock(&lmv->lmv_lock);
+ cfs_spin_lock(&lmv->lmv_lock);
for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
if (tgt->ltd_exp == NULL)
continue;
- CDEBUG(D_INFO, "lmv idx %d is %s conn "LPX64"\n",
- i, tgt->uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
+ CDEBUG(D_INFO, "Target idx %d is %s conn "LPX64"\n",
+ i, tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
- if (obd_uuid_equals(uuid, &tgt->uuid))
+ if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
break;
}
CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
obd->obd_type->typ_name, i);
- LASSERT(strcmp(obd->obd_type->typ_name, OBD_MDC_DEVICENAME) == 0);
+ LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
- if (tgt->active == activate) {
+ if (tgt->ltd_active == activate) {
CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
activate ? "" : "in");
GOTO(out_lmv_lock, rc);
}
- CDEBUG(D_INFO, "Marking OBD %p %sactive\n",
- obd, activate ? "" : "in");
-
+ CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd,
+ activate ? "" : "in");
lmv_activate_target(lmv, tgt, activate);
-
EXIT;
-
+
out_lmv_lock:
- spin_unlock(&lmv->lmv_lock);
+ cfs_spin_unlock(&lmv->lmv_lock);
return rc;
}
+static int lmv_set_mdc_data(struct lmv_obd *lmv, struct obd_uuid *uuid,
+ struct obd_connect_data *data)
+{
+ struct lmv_tgt_desc *tgt;
+ int i;
+ ENTRY;
+
+ LASSERT(data != NULL);
+
+ cfs_spin_lock(&lmv->lmv_lock);
+ for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
+ if (tgt->ltd_exp == NULL)
+ continue;
+
+ if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) {
+ lmv->datas[tgt->ltd_idx] = *data;
+ break;
+ }
+ }
+ cfs_spin_unlock(&lmv->lmv_lock);
+ RETURN(0);
+}
+
+struct obd_uuid *lmv_get_uuid(struct obd_export *exp) {
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ return obd_get_uuid(lmv->tgts[0].ltd_exp);
+}
+
static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
- int active, void *data)
+ enum obd_notify_event ev, void *data)
{
- struct obd_uuid *uuid;
- int rc;
+ struct obd_connect_data *conn_data;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct obd_uuid *uuid;
+ int rc = 0;
ENTRY;
- if (strcmp(watched->obd_type->typ_name, OBD_MDC_DEVICENAME)) {
+ if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
CERROR("unexpected notification of %s %s!\n",
watched->obd_type->typ_name,
watched->obd_name);
RETURN(-EINVAL);
}
- uuid = &watched->u.cli.cl_import->imp_target_uuid;
-
- /* Set MDC as active before notifying the observer, so the observer can
- * use the MDC normally.
- */
- rc = lmv_set_mdc_active(&obd->u.lmv, uuid, active);
- if (rc) {
- CERROR("%sactivation of %s failed: %d\n",
- active ? "" : "de", uuid->uuid, rc);
- RETURN(rc);
- }
-
- if (obd->obd_observer)
- /* Pass the notification up the chain. */
- rc = obd_notify(obd->obd_observer, watched, active, data);
- RETURN(rc);
-}
+ uuid = &watched->u.cli.cl_target_uuid;
+ if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
+ /*
+ * Set MDC as active before notifying the observer, so the
+ * observer can use the MDC normally.
+ */
+ rc = lmv_set_mdc_active(lmv, uuid,
+ ev == OBD_NOTIFY_ACTIVE);
+ if (rc) {
+ CERROR("%sactivation of %s failed: %d\n",
+ ev == OBD_NOTIFY_ACTIVE ? "" : "de",
+ uuid->uuid, rc);
+ RETURN(rc);
+ }
+ } else if (ev == OBD_NOTIFY_OCD) {
+ conn_data = &watched->u.cli.cl_import->imp_connect_data;
-static int lmv_attach(struct obd_device *dev, obd_count len, void *data)
-{
- struct lprocfs_static_vars lvars;
- int rc;
- ENTRY;
+ /*
+ * Set connect data to desired target, update exp_connect_flags.
+ */
+ rc = lmv_set_mdc_data(lmv, uuid, conn_data);
+ if (rc) {
+ CERROR("can't set connect data to target %s, rc %d\n",
+ uuid->uuid, rc);
+ RETURN(rc);
+ }
- lprocfs_init_vars(lmv, &lvars);
- rc = lprocfs_obd_attach(dev, lvars.obd_vars);
-#ifdef __KERNEL__
- if (rc == 0) {
- struct proc_dir_entry *entry;
-
- entry = create_proc_entry("target_obd_status", 0444,
- dev->obd_proc_entry);
- if (entry == NULL)
- RETURN(-ENOMEM);
- entry->proc_fops = &lmv_proc_target_fops;
- entry->data = dev;
- }
+ /*
+ * XXX: Make sure that ocd_connect_flags from all targets are
+ * the same. Otherwise one of MDTs runs wrong version or
+ * something like this. --umka
+ */
+ obd->obd_self_export->exp_connect_flags =
+ conn_data->ocd_connect_flags;
+ }
+#if 0
+ else if (ev == OBD_NOTIFY_DISCON) {
+ /*
+ * For disconnect event, flush fld cache for failout MDS case.
+ */
+ fld_client_flush(&lmv->lmv_fld);
+ }
#endif
- RETURN (rc);
-}
+ /*
+ * Pass the notification up the chain.
+ */
+ if (obd->obd_observer)
+ rc = obd_notify(obd->obd_observer, watched, ev, data);
-static int lmv_detach(struct obd_device *dev)
-{
- return lprocfs_obd_detach(dev);
+ RETURN(rc);
}
-/* this is fake connect function. Its purpose is to initialize lmv and say
- * caller that everything is okay. Real connection will be performed later. */
-static int lmv_connect(struct lustre_handle *conn, struct obd_device *obd,
+/**
+ * This is fake connect function. Its purpose is to initialize lmv and say
+ * caller that everything is okay. Real connection will be performed later.
+ */
+static int lmv_connect(const struct lu_env *env,
+ struct obd_export **exp, struct obd_device *obd,
struct obd_uuid *cluuid, struct obd_connect_data *data,
- unsigned long flags)
+ void *localdata)
{
#ifdef __KERNEL__
struct proc_dir_entry *lmv_proc_dir;
#endif
- struct lmv_obd *lmv = &obd->u.lmv;
- struct obd_export *exp;
- int rc = 0;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lustre_handle conn = { 0 };
+ int rc = 0;
ENTRY;
- rc = class_connect(conn, obd, cluuid);
+ /*
+ * We don't want to actually do the underlying connections more than
+ * once, so keep track.
+ */
+ lmv->refcount++;
+ if (lmv->refcount > 1) {
+ *exp = NULL;
+ RETURN(0);
+ }
+
+ rc = class_connect(&conn, obd, cluuid);
if (rc) {
CERROR("class_connection() returned %d\n", rc);
RETURN(rc);
}
- exp = class_conn2export(conn);
-
- /* we don't want to actually do the underlying connections more than
- * once, so keep track. */
- lmv->refcount++;
- if (lmv->refcount > 1) {
- class_export_put(exp);
- RETURN(0);
- }
+ *exp = class_conn2export(&conn);
+ class_export_get(*exp);
- lmv->exp = exp;
+ lmv->exp = *exp;
lmv->connected = 0;
lmv->cluuid = *cluuid;
- lmv->connect_flags = flags;
+
if (data)
- memcpy(&lmv->conn_data, data, sizeof(*data));
+ lmv->conn_data = *data;
#ifdef __KERNEL__
lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry,
}
#endif
- /* all real clients should perform actual connection right away, because
- * it is possible, that LMV will not have opportunity to connect
- * targets, as MDC stuff will be called directly, for instance while
- * reading ../mdc/../kbytesfree procfs file, etc.
+ /*
+ * All real clients should perform actual connection right away, because
+ * it is possible, that LMV will not have opportunity to connect targets
+ * and MDC stuff will be called directly, for instance while reading
+ * ../mdc/../kbytesfree procfs file, etc.
*/
- if (flags & OBD_OPT_REAL_CLIENT)
+ if (data->ocd_connect_flags & OBD_CONNECT_REAL)
rc = lmv_check_connect(obd);
#ifdef __KERNEL__
if (rc) {
if (lmv_proc_dir)
- lprocfs_remove(lmv_proc_dir);
+ lprocfs_remove(&lmv_proc_dir);
}
#endif
static void lmv_set_timeouts(struct obd_device *obd)
{
- struct lmv_tgt_desc *tgts;
- struct lmv_obd *lmv;
- int i;
+ struct lmv_tgt_desc *tgts;
+ struct lmv_obd *lmv;
+ int i;
lmv = &obd->u.lmv;
if (lmv->server_timeout == 0)
for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
if (tgts->ltd_exp == NULL)
continue;
-
- obd_set_info(tgts->ltd_exp, strlen("inter_mds"),
- "inter_mds", 0, NULL);
+
+ obd_set_info_async(NULL, tgts->ltd_exp, sizeof(KEY_INTERMDS),
+ KEY_INTERMDS, 0, NULL, NULL);
}
}
static int lmv_init_ea_size(struct obd_export *exp, int easize,
- int cookiesize)
+ int def_easize, int cookiesize)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int i, rc = 0, change = 0;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int i;
+ int rc = 0;
+ int change = 0;
ENTRY;
if (lmv->max_easize < easize) {
lmv->max_easize = easize;
change = 1;
}
+ if (lmv->max_def_easize < def_easize) {
+ lmv->max_def_easize = def_easize;
+ change = 1;
+ }
if (lmv->max_cookiesize < cookiesize) {
lmv->max_cookiesize = cookiesize;
change = 1;
}
if (change == 0)
RETURN(0);
-
+
if (lmv->connected == 0)
RETURN(0);
continue;
}
- rc = obd_init_ea_size(lmv->tgts[i].ltd_exp, easize, cookiesize);
+ rc = md_init_ea_size(lmv->tgts[i].ltd_exp, easize, def_easize,
+ cookiesize);
if (rc) {
CERROR("obd_init_ea_size() failed on MDT target %d, "
"error %d.\n", i, rc);
int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
{
- struct lmv_obd *lmv = &obd->u.lmv;
- struct obd_uuid *cluuid = &lmv->cluuid;
- struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
- struct lustre_handle conn = {0, };
- struct obd_device *mdc_obd;
- struct obd_export *mdc_exp;
- int rc;
#ifdef __KERNEL__
- struct proc_dir_entry *lmv_proc_dir;
+ struct proc_dir_entry *lmv_proc_dir;
#endif
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct obd_uuid *cluuid = &lmv->cluuid;
+ struct obd_connect_data *mdc_data = NULL;
+ struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
+ struct obd_device *mdc_obd;
+ struct obd_export *mdc_exp;
+ struct lu_fld_target target;
+ int rc;
ENTRY;
- /* for MDS: don't connect to yourself */
- if (obd_uuid_equals(&tgt->uuid, cluuid)) {
- CDEBUG(D_CONFIG, "don't connect back to %s\n", cluuid->uuid);
- /* XXX - the old code didn't increment active tgt count.
- * should we ? */
- RETURN(0);
- }
-
- mdc_obd = class_find_client_obd(&tgt->uuid, OBD_MDC_DEVICENAME,
+ mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
&obd->obd_uuid);
if (!mdc_obd) {
- CERROR("target %s not attached\n", tgt->uuid.uuid);
+ CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
RETURN(-EINVAL);
}
CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
- tgt->uuid.uuid, obd->obd_uuid.uuid,
+ tgt->ltd_uuid.uuid, obd->obd_uuid.uuid,
cluuid->uuid);
if (!mdc_obd->obd_set_up) {
- CERROR("target %s not set up\n", tgt->uuid.uuid);
+ CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
RETURN(-EINVAL);
}
-
- rc = obd_connect(&conn, mdc_obd, &lmv_mdc_uuid, &lmv->conn_data,
- lmv->connect_flags);
+
+ rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid,
+ &lmv->conn_data, NULL);
if (rc) {
- CERROR("target %s connect error %d\n", tgt->uuid.uuid, rc);
+ CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
RETURN(rc);
}
- mdc_exp = class_conn2export(&conn);
+ /*
+ * Init fid sequence client for this mdc and add new fld target.
+ */
+ rc = obd_fid_init(mdc_exp);
+ if (rc)
+ RETURN(rc);
+
+ target.ft_srv = NULL;
+ target.ft_exp = mdc_exp;
+ target.ft_idx = tgt->ltd_idx;
+
+ fld_client_add_target(&lmv->lmv_fld, &target);
+
+ mdc_data = &class_exp2cliimp(mdc_exp)->imp_connect_data;
rc = obd_register_observer(mdc_obd, obd);
if (rc) {
- obd_disconnect(mdc_exp, 0);
+ obd_disconnect(mdc_exp);
CERROR("target %s register_observer error %d\n",
- tgt->uuid.uuid, rc);
+ tgt->ltd_uuid.uuid, rc);
RETURN(rc);
}
if (obd->obd_observer) {
- /* tell the mds_lmv about the new target */
- rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd, 1,
- (void *)(tgt - lmv->tgts));
+ /*
+ * Tell the observer about the new target.
+ */
+ rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
+ OBD_NOTIFY_ACTIVE, (void *)(tgt - lmv->tgts));
if (rc) {
- obd_disconnect(mdc_exp, 0);
+ obd_disconnect(mdc_exp);
RETURN(rc);
}
}
+ tgt->ltd_active = 1;
tgt->ltd_exp = mdc_exp;
- tgt->active = 1;
lmv->desc.ld_active_tgt_count++;
- obd_init_ea_size(tgt->ltd_exp, lmv->max_easize,
- lmv->max_cookiesize);
- CDEBUG(D_CONFIG, "connected to %s(%s) successfully (%d)\n",
+ /*
+ * Copy connect data, it may be used later.
+ */
+ lmv->datas[tgt->ltd_idx] = *mdc_data;
+
+ md_init_ea_size(tgt->ltd_exp, lmv->max_easize,
+ lmv->max_def_easize, lmv->max_cookiesize);
+
+ CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
- atomic_read(&obd->obd_refcount));
+ cfs_atomic_read(&obd->obd_refcount));
#ifdef __KERNEL__
lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
if (lmv_proc_dir) {
struct proc_dir_entry *mdc_symlink;
- char name[MAX_STRING_SIZE + 1];
LASSERT(mdc_obd->obd_type != NULL);
LASSERT(mdc_obd->obd_type->typ_name != NULL);
- name[MAX_STRING_SIZE] = '\0';
- snprintf(name, MAX_STRING_SIZE, "../../../%s/%s",
- mdc_obd->obd_type->typ_name,
- mdc_obd->obd_name);
- mdc_symlink = proc_symlink(mdc_obd->obd_name,
- lmv_proc_dir, name);
+ mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name,
+ lmv_proc_dir,
+ "../../../%s/%s",
+ mdc_obd->obd_type->typ_name,
+ mdc_obd->obd_name);
if (mdc_symlink == NULL) {
- CERROR("could not register LMV target "
+ CERROR("Could not register LMV target "
"/proc/fs/lustre/%s/%s/target_obds/%s.",
obd->obd_type->typ_name, obd->obd_name,
mdc_obd->obd_name);
- lprocfs_remove(lmv_proc_dir);
+ lprocfs_remove(&lmv_proc_dir);
lmv_proc_dir = NULL;
}
}
RETURN(0);
}
-int lmv_add_mdc(struct obd_device *obd, struct obd_uuid *tgt_uuid)
+int lmv_add_target(struct obd_device *obd, struct obd_uuid *tgt_uuid)
{
- struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
- int rc = 0;
+ int rc = 0;
ENTRY;
- CDEBUG(D_CONFIG, "tgt_uuid: %s.\n", tgt_uuid->uuid);
+ CDEBUG(D_CONFIG, "Target uuid: %s.\n", tgt_uuid->uuid);
lmv_init_lock(lmv);
if (lmv->desc.ld_active_tgt_count >= LMV_MAX_TGT_COUNT) {
lmv_init_unlock(lmv);
- CERROR("can't add %s, LMV module compiled for %d MDCs. "
+ CERROR("Can't add %s, LMV module compiled for %d MDCs. "
"That many MDCs already configured.\n",
tgt_uuid->uuid, LMV_MAX_TGT_COUNT);
RETURN(-EINVAL);
if (lmv->desc.ld_tgt_count == 0) {
struct obd_device *mdc_obd;
- mdc_obd = class_find_client_obd(tgt_uuid, OBD_MDC_DEVICENAME,
+ mdc_obd = class_find_client_obd(tgt_uuid, LUSTRE_MDC_NAME,
&obd->obd_uuid);
if (!mdc_obd) {
lmv_init_unlock(lmv);
RETURN(-EINVAL);
}
- rc = obd_llog_init(obd, &obd->obd_llogs, mdc_obd, 0, NULL);
+ rc = obd_llog_init(obd, &obd->obd_olg, mdc_obd, NULL);
if (rc) {
lmv_init_unlock(lmv);
CERROR("lmv failed to setup llogging subsystems\n");
}
}
- spin_lock(&lmv->lmv_lock);
+ cfs_spin_lock(&lmv->lmv_lock);
tgt = lmv->tgts + lmv->desc.ld_tgt_count++;
- tgt->uuid = *tgt_uuid;
- spin_unlock(&lmv->lmv_lock);
+ tgt->ltd_uuid = *tgt_uuid;
+ cfs_spin_unlock(&lmv->lmv_lock);
if (lmv->connected) {
rc = lmv_connect_mdc(obd, tgt);
if (rc) {
- spin_lock(&lmv->lmv_lock);
+ cfs_spin_lock(&lmv->lmv_lock);
lmv->desc.ld_tgt_count--;
memset(tgt, 0, sizeof(*tgt));
- spin_unlock(&lmv->lmv_lock);
+ cfs_spin_unlock(&lmv->lmv_lock);
} else {
- int easize = sizeof(struct mea) +
+ int easize = sizeof(struct lmv_stripe_md) +
lmv->desc.ld_tgt_count *
- sizeof(struct lustre_id);
- lmv_init_ea_size(obd->obd_self_export, easize, 0);
+ sizeof(struct lu_fid);
+ lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
}
}
RETURN(rc);
}
-/* performs a check if passed obd is connected. If no - connect it. */
int lmv_check_connect(struct obd_device *obd)
{
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lmv_tgt_desc *tgt;
- int i, rc, easize;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int i;
+ int rc;
+ int easize;
ENTRY;
if (lmv->connected)
RETURN(0);
-
+
lmv_init_lock(lmv);
if (lmv->connected) {
lmv_init_unlock(lmv);
}
if (lmv->desc.ld_tgt_count == 0) {
+ lmv_init_unlock(lmv);
CERROR("%s: no targets configured.\n", obd->obd_name);
RETURN(-EINVAL);
}
- CDEBUG(D_CONFIG, "time to connect %s to %s\n",
+ CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
lmv->cluuid.uuid, obd->obd_name);
LASSERT(lmv->tgts != NULL);
lmv_set_timeouts(obd);
class_export_put(lmv->exp);
lmv->connected = 1;
- easize = lmv->desc.ld_tgt_count * sizeof(struct lustre_id) +
- sizeof(struct mea);
- lmv_init_ea_size(obd->obd_self_export, easize, 0);
+ easize = lmv_get_easize(lmv);
+ lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
lmv_init_unlock(lmv);
RETURN(0);
while (i-- > 0) {
int rc2;
--tgt;
- tgt->active = 0;
+ tgt->ltd_active = 0;
if (tgt->ltd_exp) {
--lmv->desc.ld_active_tgt_count;
- rc2 = obd_disconnect(tgt->ltd_exp, 0);
+ rc2 = obd_disconnect(tgt->ltd_exp);
if (rc2) {
- CERROR("error: LMV target %s disconnect on "
+ CERROR("LMV target %s disconnect on "
"MDC idx %d: error %d\n",
- tgt->uuid.uuid, i, rc2);
+ tgt->ltd_uuid.uuid, i, rc2);
}
}
}
- class_disconnect(lmv->exp, 0);
+ class_disconnect(lmv->exp);
lmv_init_unlock(lmv);
RETURN(rc);
}
-static int lmv_disconnect(struct obd_export *exp, unsigned long flags)
+static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
{
- struct obd_device *obd = class_exp2obd(exp);
- struct lmv_obd *lmv = &obd->u.lmv;
-
#ifdef __KERNEL__
- struct proc_dir_entry *lmv_proc_dir;
+ struct proc_dir_entry *lmv_proc_dir;
#endif
- int rc, i;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct obd_device *mdc_obd;
+ int rc;
ENTRY;
- if (!lmv->tgts)
- goto out_local;
+ LASSERT(tgt != NULL);
+ LASSERT(obd != NULL);
- /* Only disconnect the underlying layers on the final disconnect. */
- lmv->refcount--;
- if (lmv->refcount != 0)
- goto out_local;
+ mdc_obd = class_exp2obd(tgt->ltd_exp);
+
+ if (mdc_obd) {
+ mdc_obd->obd_force = obd->obd_force;
+ mdc_obd->obd_fail = obd->obd_fail;
+ mdc_obd->obd_no_recov = obd->obd_no_recov;
+ }
#ifdef __KERNEL__
lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
+ if (lmv_proc_dir) {
+ struct proc_dir_entry *mdc_symlink;
+
+ mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name);
+ if (mdc_symlink) {
+ lprocfs_remove(&mdc_symlink);
+ } else {
+ CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n",
+ obd->obd_type->typ_name, obd->obd_name,
+ mdc_obd->obd_name);
+ }
+ }
#endif
+ rc = obd_fid_fini(tgt->ltd_exp);
+ if (rc)
+ CERROR("Can't finanize fids factory\n");
- for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
- struct obd_device *mdc_obd;
-
- if (lmv->tgts[i].ltd_exp == NULL)
- continue;
+ CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
+ tgt->ltd_exp->exp_obd->obd_name,
+ tgt->ltd_exp->exp_obd->obd_uuid.uuid);
- mdc_obd = class_exp2obd(lmv->tgts[i].ltd_exp);
+ obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
+ rc = obd_disconnect(tgt->ltd_exp);
+ if (rc) {
+ if (tgt->ltd_active) {
+ CERROR("Target %s disconnect error %d\n",
+ tgt->ltd_uuid.uuid, rc);
+ }
+ }
- if (mdc_obd)
- mdc_obd->obd_no_recov = obd->obd_no_recov;
+ lmv_activate_target(lmv, tgt, 0);
+ tgt->ltd_exp = NULL;
+ RETURN(0);
+}
+static int lmv_disconnect(struct obd_export *exp)
+{
+ struct obd_device *obd = class_exp2obd(exp);
#ifdef __KERNEL__
- if (lmv_proc_dir) {
- struct proc_dir_entry *mdc_symlink;
-
- mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name);
- if (mdc_symlink) {
- lprocfs_remove(mdc_symlink);
- } else {
- CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n",
- obd->obd_type->typ_name, obd->obd_name,
- mdc_obd->obd_name);
- }
- }
+ struct proc_dir_entry *lmv_proc_dir;
#endif
- CDEBUG(D_OTHER, "disconnected from %s(%s) successfully\n",
- lmv->tgts[i].ltd_exp->exp_obd->obd_name,
- lmv->tgts[i].ltd_exp->exp_obd->obd_uuid.uuid);
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int rc;
+ int i;
+ ENTRY;
- obd_register_observer(lmv->tgts[i].ltd_exp->exp_obd, NULL);
- rc = obd_disconnect(lmv->tgts[i].ltd_exp, flags);
- if (rc) {
- if (lmv->tgts[i].active) {
- CERROR("Target %s disconnect error %d\n",
- lmv->tgts[i].uuid.uuid, rc);
- }
- rc = 0;
- }
-
- lmv_activate_target(lmv, &lmv->tgts[i], 0);
- lmv->tgts[i].ltd_exp = NULL;
+ if (!lmv->tgts)
+ goto out_local;
+
+ /*
+ * Only disconnect the underlying layers on the final disconnect.
+ */
+ lmv->refcount--;
+ if (lmv->refcount != 0)
+ goto out_local;
+
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ if (lmv->tgts[i].ltd_exp == NULL)
+ continue;
+ lmv_disconnect_mdc(obd, &lmv->tgts[i]);
}
#ifdef __KERNEL__
+ lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
if (lmv_proc_dir) {
- lprocfs_remove(lmv_proc_dir);
+ lprocfs_remove(&lmv_proc_dir);
} else {
CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
obd->obd_type->typ_name, obd->obd_name);
#endif
out_local:
- /* this is the case when no real connection is established by
- * lmv_check_connect(). */
+ /*
+ * This is the case when no real connection is established by
+ * lmv_check_connect().
+ */
if (!lmv->connected)
class_export_put(exp);
- rc = class_disconnect(exp, 0);
+ rc = class_disconnect(exp);
if (lmv->refcount == 0)
lmv->connected = 0;
RETURN(rc);
static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
int len, void *karg, void *uarg)
{
- struct obd_device *obddev = class_exp2obd(exp);
- struct lmv_obd *lmv = &obddev->u.lmv;
- int i, rc = 0, set = 0;
+ struct obd_device *obddev = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obddev->u.lmv;
+ int i = 0;
+ int rc = 0;
+ int set = 0;
+ int count = lmv->desc.ld_tgt_count;
ENTRY;
- if (lmv->desc.ld_tgt_count == 0)
+ if (count == 0)
RETURN(-ENOTTY);
-
- for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
- int err;
- if (lmv->tgts[i].ltd_exp == NULL)
- continue;
+ switch (cmd) {
+ case IOC_OBD_STATFS: {
+ struct obd_ioctl_data *data = karg;
+ struct obd_device *mdc_obd;
+ struct obd_statfs stat_buf = {0};
+ __u32 index;
- err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp, len, karg, uarg);
- if (err) {
- if (lmv->tgts[i].active) {
- CERROR("error: iocontrol MDC %s on MDT"
- "idx %d: err = %d\n",
- lmv->tgts[i].uuid.uuid, i, err);
- if (!rc)
- rc = err;
- }
- } else
- set = 1;
- }
- if (!set && !rc)
- rc = -EIO;
+ memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
+ if ((index >= count))
+ RETURN(-ENODEV);
- RETURN(rc);
-}
+ if (!lmv->tgts[index].ltd_active)
+ RETURN(-ENODATA);
-static int lmv_setup(struct obd_device *obd, obd_count len, void *buf)
-{
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lustre_cfg *lcfg = buf;
- struct lmv_desc *desc;
- int rc = 0;
- ENTRY;
+ mdc_obd = class_exp2obd(lmv->tgts[index].ltd_exp);
+ if (!mdc_obd)
+ RETURN(-EINVAL);
- if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
- CERROR("LMV setup requires a descriptor\n");
- RETURN(-EINVAL);
- }
+ /* copy UUID */
+ if (cfs_copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
+ min((int) data->ioc_plen2,
+ (int) sizeof(struct obd_uuid))))
+ RETURN(-EFAULT);
- desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
- if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
- CERROR("descriptor size wrong: %d > %d\n",
- (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
- RETURN(-EINVAL);
+ rc = obd_statfs(NULL, lmv->tgts[index].ltd_exp, &stat_buf,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+ 0);
+ if (rc)
+ RETURN(rc);
+ if (cfs_copy_to_user(data->ioc_pbuf1, &stat_buf,
+ min((int) data->ioc_plen1,
+ (int) sizeof(stat_buf))))
+ RETURN(-EFAULT);
+ break;
}
+ case OBD_IOC_QUOTACTL: {
+ struct if_quotactl *qctl = karg;
+ struct lmv_tgt_desc *tgt = NULL;
+ struct obd_quotactl *oqctl;
- lmv->tgts_size = LMV_MAX_TGT_COUNT * sizeof(struct lmv_tgt_desc);
+ if (qctl->qc_valid == QC_MDTIDX) {
+ if (qctl->qc_idx < 0 || count <= qctl->qc_idx)
+ RETURN(-EINVAL);
- OBD_ALLOC(lmv->tgts, lmv->tgts_size);
- if (lmv->tgts == NULL) {
- CERROR("Out of memory\n");
- RETURN(-ENOMEM);
- }
+ tgt = &lmv->tgts[qctl->qc_idx];
+ if (!tgt->ltd_exp)
+ RETURN(-EINVAL);
+ } else if (qctl->qc_valid == QC_UUID) {
+ for (i = 0; i < count; i++) {
+ tgt = &lmv->tgts[i];
+ if (!obd_uuid_equals(&tgt->ltd_uuid,
+ &qctl->obd_uuid))
+ continue;
- obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
- lmv->desc.ld_tgt_count = 0;
- lmv->desc.ld_active_tgt_count = 0;
- lmv->max_cookiesize = 0;
- lmv->max_easize = 0;
+ if (tgt->ltd_exp == NULL)
+ RETURN(-EINVAL);
- spin_lock_init(&lmv->lmv_lock);
- sema_init(&lmv->init_sem, 1);
+ break;
+ }
+ } else {
+ RETURN(-EINVAL);
+ }
- rc = lmv_setup_mgr(obd);
- if (rc) {
- CERROR("Can't setup LMV object manager, "
- "error %d.\n", rc);
- OBD_FREE(lmv->tgts, lmv->tgts_size);
- RETURN(rc);
+ if (i >= count)
+ RETURN(-EAGAIN);
+
+ LASSERT(tgt && tgt->ltd_exp);
+ OBD_ALLOC_PTR(oqctl);
+ if (!oqctl)
+ RETURN(-ENOMEM);
+
+ QCTL_COPY(oqctl, qctl);
+ rc = obd_quotactl(tgt->ltd_exp, oqctl);
+ if (rc == 0) {
+ QCTL_COPY(qctl, oqctl);
+ qctl->qc_valid = QC_MDTIDX;
+ qctl->obd_uuid = tgt->ltd_uuid;
+ }
+ OBD_FREE_PTR(oqctl);
+ break;
+ }
+ case OBD_IOC_CHANGELOG_SEND:
+ case OBD_IOC_CHANGELOG_CLEAR: {
+ struct ioc_changelog *icc = karg;
+
+ if (icc->icc_mdtindex >= count)
+ RETURN(-ENODEV);
+
+ rc = obd_iocontrol(cmd, lmv->tgts[icc->icc_mdtindex].ltd_exp,
+ sizeof(*icc), icc, NULL);
+ break;
+ }
+ case LL_IOC_GET_CONNECT_FLAGS: {
+ rc = obd_iocontrol(cmd, lmv->tgts[0].ltd_exp, len, karg, uarg);
+ break;
}
+ default : {
+ for (i = 0; i < count; i++) {
+ int err;
+ struct obd_device *mdc_obd;
+
+ if (lmv->tgts[i].ltd_exp == NULL)
+ continue;
+ /* ll_umount_begin() sets force flag but for lmv, not
+ * mdc. Let's pass it through */
+ mdc_obd = class_exp2obd(lmv->tgts[i].ltd_exp);
+ mdc_obd->obd_force = obddev->obd_force;
+ err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp, len,
+ karg, uarg);
+ if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
+ RETURN(err);
+ } else if (err) {
+ if (lmv->tgts[i].ltd_active) {
+ CERROR("error: iocontrol MDC %s on MDT"
+ "idx %d cmd %x: err = %d\n",
+ lmv->tgts[i].ltd_uuid.uuid,
+ i, cmd, err);
+ if (!rc)
+ rc = err;
+ }
+ } else
+ set = 1;
+ }
+ if (!set && !rc)
+ rc = -EIO;
+ }
+ }
RETURN(rc);
}
-static int lmv_cleanup(struct obd_device *obd, int flags)
+static int lmv_all_chars_policy(int count, const char *name,
+ int len)
{
- struct lmv_obd *lmv = &obd->u.lmv;
- ENTRY;
+ unsigned int c = 0;
- lmv_cleanup_mgr(obd);
- OBD_FREE(lmv->tgts, lmv->tgts_size);
-
- RETURN(0);
+ while (len > 0)
+ c += name[--len];
+ c = c % count;
+ return c;
}
-static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf)
+
+static int lmv_nid_policy(struct lmv_obd *lmv)
{
- struct lustre_cfg *lcfg = buf;
- struct obd_uuid tgt_uuid;
- int rc;
- ENTRY;
+ struct obd_import *imp;
+ __u32 id;
- switch(lcfg->lcfg_command) {
- case LCFG_LMV_ADD_MDC:
- if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(tgt_uuid.uuid))
- GOTO(out, rc = -EINVAL);
+ /*
+ * XXX: To get nid we assume that underlying obd device is mdc.
+ */
+ imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
+ id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
+ return id % lmv->desc.ld_tgt_count;
+}
- obd_str2uuid(&tgt_uuid, lustre_cfg_string(lcfg, 1));
- rc = lmv_add_mdc(obd, &tgt_uuid);
+static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
+ placement_policy_t placement)
+{
+ switch (placement) {
+ case PLACEMENT_CHAR_POLICY:
+ return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
+ op_data->op_name,
+ op_data->op_namelen);
+ case PLACEMENT_NID_POLICY:
+ return lmv_nid_policy(lmv);
+
+ default:
+ break;
+ }
+
+ CERROR("Unsupported placement policy %x\n", placement);
+ return -EINVAL;
+}
+
+/**
+ * This is _inode_ placement policy function (not name).
+ */
+static int lmv_placement_policy(struct obd_device *obd,
+ struct md_op_data *op_data,
+ mdsno_t *mds)
+{
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_object *obj;
+ int rc;
+ ENTRY;
+
+ LASSERT(mds != NULL);
+
+ if (lmv->desc.ld_tgt_count == 1) {
+ *mds = 0;
+ RETURN(0);
+ }
+
+ /*
+ * Allocate new fid on target according to operation type and parent
+ * home mds.
+ */
+ obj = lmv_object_find(obd, &op_data->op_fid1);
+ if (obj != NULL || op_data->op_name == NULL ||
+ op_data->op_opc != LUSTRE_OPC_MKDIR) {
+ /*
+ * Allocate fid for non-dir or for null name or for case parent
+ * dir is split.
+ */
+ if (obj) {
+ lmv_object_put(obj);
+
+ /*
+ * If we have this flag turned on, and we see that
+ * parent dir is split, this means, that caller did not
+ * notice split yet. This is race and we would like to
+ * let caller know that.
+ */
+ if (op_data->op_bias & MDS_CHECK_SPLIT)
+ RETURN(-ERESTART);
+ }
+
+ /*
+ * Allocate new fid on same mds where parent fid is located and
+ * where operation will be sent. In case of split dir, ->op_fid1
+ * and ->op_mds here will contain fid and mds of slave directory
+ * object (assigned by caller).
+ */
+ *mds = op_data->op_mds;
+ rc = 0;
+ } else {
+ /*
+ * Parent directory is not split and we want to create a
+ * directory in it. Let's calculate where to place it according
+ * to operation data @op_data.
+ */
+ *mds = lmv_choose_mds(lmv, op_data, lmv->lmv_placement);
+ rc = 0;
+ }
+
+ if (rc) {
+ CERROR("Can't choose MDS, err = %d\n", rc);
+ } else {
+ LASSERT(*mds < lmv->desc.ld_tgt_count);
+ }
+
+ RETURN(rc);
+}
+
+int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
+ mdsno_t mds)
+{
+ struct lmv_tgt_desc *tgt;
+ int rc;
+ ENTRY;
+
+ tgt = lmv_get_target(lmv, mds);
+
+ /*
+ * New seq alloc and FLD setup should be atomic. Otherwise we may find
+ * on server that seq in new allocated fid is not yet known.
+ */
+ cfs_mutex_lock(&tgt->ltd_fid_mutex);
+
+ if (!tgt->ltd_active)
+ GOTO(out, rc = -ENODEV);
+
+ /*
+ * Asking underlaying tgt layer to allocate new fid.
+ */
+ rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL);
+ if (rc > 0) {
+ LASSERT(fid_is_sane(fid));
+ rc = 0;
+ }
+
+ EXIT;
+out:
+ cfs_mutex_unlock(&tgt->ltd_fid_mutex);
+ return rc;
+}
+
+int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
+ struct md_op_data *op_data)
+{
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obd->u.lmv;
+ mdsno_t mds = 0;
+ int rc;
+ ENTRY;
+
+ LASSERT(op_data != NULL);
+ LASSERT(fid != NULL);
+
+ rc = lmv_placement_policy(obd, op_data, &mds);
+ if (rc) {
+ CERROR("Can't get target for allocating fid, "
+ "rc %d\n", rc);
+ RETURN(rc);
+ }
+
+ rc = __lmv_fid_alloc(lmv, fid, mds);
+ if (rc) {
+ CERROR("Can't alloc new fid, rc %d\n", rc);
+ RETURN(rc);
+ }
+
+ RETURN(rc);
+}
+
+static int lmv_fid_delete(struct obd_export *exp, const struct lu_fid *fid)
+{
+ ENTRY;
+ LASSERT(exp != NULL && fid != NULL);
+ if (lmv_object_delete(exp, fid)) {
+ CDEBUG(D_INODE, "Object "DFID" is destroyed.\n",
+ PFID(fid));
+ }
+ RETURN(0);
+}
+
+static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
+{
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lprocfs_static_vars lvars;
+ struct lmv_desc *desc;
+ int rc;
+ int i = 0;
+ ENTRY;
+
+ if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
+ CERROR("LMV setup requires a descriptor\n");
+ RETURN(-EINVAL);
+ }
+
+ desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
+ if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
+ CERROR("Lmv descriptor size wrong: %d > %d\n",
+ (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
+ RETURN(-EINVAL);
+ }
+
+ lmv->tgts_size = LMV_MAX_TGT_COUNT * sizeof(struct lmv_tgt_desc);
+
+ OBD_ALLOC(lmv->tgts, lmv->tgts_size);
+ if (lmv->tgts == NULL)
+ RETURN(-ENOMEM);
+
+ for (i = 0; i < LMV_MAX_TGT_COUNT; i++) {
+ cfs_mutex_init(&lmv->tgts[i].ltd_fid_mutex);
+ lmv->tgts[i].ltd_idx = i;
+ }
+
+ lmv->datas_size = LMV_MAX_TGT_COUNT * sizeof(struct obd_connect_data);
+
+ OBD_ALLOC(lmv->datas, lmv->datas_size);
+ if (lmv->datas == NULL)
+ GOTO(out_free_tgts, rc = -ENOMEM);
+
+ obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
+ lmv->desc.ld_tgt_count = 0;
+ lmv->desc.ld_active_tgt_count = 0;
+ lmv->max_cookiesize = 0;
+ lmv->max_def_easize = 0;
+ lmv->max_easize = 0;
+ lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
+
+ cfs_spin_lock_init(&lmv->lmv_lock);
+ cfs_mutex_init(&lmv->init_mutex);
+
+ rc = lmv_object_setup(obd);
+ if (rc) {
+ CERROR("Can't setup LMV object manager, error %d.\n", rc);
+ GOTO(out_free_datas, rc);
+ }
+
+ lprocfs_lmv_init_vars(&lvars);
+ lprocfs_obd_setup(obd, lvars.obd_vars);
+#ifdef LPROCFS
+ {
+ rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
+ 0444, &lmv_proc_target_fops, obd);
+ if (rc)
+ CWARN("%s: error adding LMV target_obd file: rc = %d\n",
+ obd->obd_name, rc);
+ }
+#endif
+ rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
+ LUSTRE_CLI_FLD_HASH_DHT);
+ if (rc) {
+ CERROR("Can't init FLD, err %d\n", rc);
+ GOTO(out_free_datas, rc);
+ }
+
+ RETURN(0);
+
+out_free_datas:
+ OBD_FREE(lmv->datas, lmv->datas_size);
+ lmv->datas = NULL;
+out_free_tgts:
+ OBD_FREE(lmv->tgts, lmv->tgts_size);
+ lmv->tgts = NULL;
+ return rc;
+}
+
+static int lmv_cleanup(struct obd_device *obd)
+{
+ struct lmv_obd *lmv = &obd->u.lmv;
+ ENTRY;
+
+ fld_client_fini(&lmv->lmv_fld);
+ lmv_object_cleanup(obd);
+ OBD_FREE(lmv->datas, lmv->datas_size);
+ OBD_FREE(lmv->tgts, lmv->tgts_size);
+
+ RETURN(0);
+}
+
+static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf)
+{
+ struct lustre_cfg *lcfg = buf;
+ struct obd_uuid tgt_uuid;
+ int rc;
+ ENTRY;
+
+ switch(lcfg->lcfg_command) {
+ case LCFG_ADD_MDC:
+ if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(tgt_uuid.uuid))
+ GOTO(out, rc = -EINVAL);
+
+ obd_str2uuid(&tgt_uuid, lustre_cfg_string(lcfg, 1));
+ rc = lmv_add_target(obd, &tgt_uuid);
GOTO(out, rc);
default: {
CERROR("Unknown command: %d\n", lcfg->lcfg_command);
RETURN(rc);
}
-static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs,
- unsigned long max_age)
+static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
+ struct obd_statfs *osfs, __u64 max_age, __u32 flags)
{
- struct lmv_obd *lmv = &obd->u.lmv;
- struct obd_statfs *temp;
- int rc = 0, i;
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct obd_statfs *temp;
+ int rc = 0;
+ int i;
ENTRY;
-
+
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
OBD_ALLOC(temp, sizeof(*temp));
if (temp == NULL)
RETURN(-ENOMEM);
-
+
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
if (lmv->tgts[i].ltd_exp == NULL)
continue;
- rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, temp, max_age);
+ rc = obd_statfs(env, lmv->tgts[i].ltd_exp, temp,
+ max_age, flags);
if (rc) {
CERROR("can't stat MDS #%d (%s), error %d\n", i,
lmv->tgts[i].ltd_exp->exp_obd->obd_name,
GOTO(out_free_temp, rc);
}
if (i == 0) {
- memcpy(osfs, temp, sizeof(*temp));
+ *osfs = *temp;
} else {
osfs->os_bavail += temp->os_bavail;
osfs->os_blocks += temp->os_blocks;
return rc;
}
-static int lmv_getstatus(struct obd_export *exp, struct lustre_id *id)
+static int lmv_getstatus(struct obd_export *exp,
+ struct lu_fid *fid,
+ struct obd_capa **pc)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int rc;
+ ENTRY;
+
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
+
+ rc = md_getstatus(lmv->tgts[0].ltd_exp, fid, pc);
+ RETURN(rc);
+}
+
+static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
+ struct obd_capa *oc, obd_valid valid, const char *name,
+ const char *input, int input_size, int output_size,
+ int flags, struct ptlrpc_request **request)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
+ ENTRY;
+
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
+
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_getxattr(tgt->ltd_exp, fid, oc, valid, name, input,
+ input_size, output_size, flags, request);
+
+ RETURN(rc);
+}
+
+static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
+ struct obd_capa *oc, obd_valid valid, const char *name,
+ const char *input, int input_size, int output_size,
+ int flags, __u32 suppgid,
+ struct ptlrpc_request **request)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
ENTRY;
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- rc = md_getstatus(lmv->tgts[0].ltd_exp, id);
- id_group(id) = 0;
-
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_setxattr(tgt->ltd_exp, fid, oc, valid, name, input,
+ input_size, output_size, flags, suppgid,
+ request);
+
RETURN(rc);
}
-static int lmv_getattr(struct obd_export *exp, struct lustre_id *id,
- __u64 valid, const char *xattr_name,
- const void *xattr_data, unsigned int xattr_datalen,
- unsigned int ea_size, struct obd_capa *ocapa,
+static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
struct ptlrpc_request **request)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc, i = id_group(id);
- struct lmv_obj *obj;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ int rc;
+ int i;
ENTRY;
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- LASSERT(i < lmv->desc.ld_tgt_count);
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+ if (op_data->op_valid & OBD_MD_MDTIDX) {
+ op_data->op_mds = tgt->ltd_idx;
+ RETURN(0);
+ }
- rc = md_getattr(lmv->tgts[i].ltd_exp, id, valid,
- xattr_name, xattr_data, xattr_datalen,
- ea_size, ocapa, request);
+ rc = md_getattr(tgt->ltd_exp, op_data, request);
if (rc)
RETURN(rc);
-
- obj = lmv_grab_obj(obd, id);
-
- CDEBUG(D_OTHER, "GETATTR for "DLID4" %s\n",
- OLID4(id), obj ? "(splitted)" : "");
+
+ obj = lmv_object_find_lock(obd, &op_data->op_fid1);
+
+ CDEBUG(D_INODE, "GETATTR for "DFID" %s\n", PFID(&op_data->op_fid1),
+ obj ? "(split)" : "");
/*
- * if object is splitted, then we loop over all the slaves and gather
- * size attribute. In ideal world we would have to gather also mds field
- * from all slaves, as object is spread over the cluster and this is
+ * If object is split, then we loop over all the slaves and gather size
+ * attribute. In ideal world we would have to gather also mds field from
+ * all slaves, as object is spread over the cluster and this is
* definitely interesting information and it is not good to loss it,
* but...
*/
if (obj) {
- struct mds_body *body;
+ struct mdt_body *body;
if (*request == NULL) {
- lmv_put_obj(obj);
+ lmv_object_put(obj);
RETURN(rc);
}
-
- body = lustre_msg_buf((*request)->rq_repmsg, 0,
- sizeof(*body));
- LASSERT(body != NULL);
- lmv_lock_obj(obj);
-
- for (i = 0; i < obj->objcount; i++) {
+ body = req_capsule_server_get(&(*request)->rq_pill,
+ &RMF_MDT_BODY);
+ LASSERT(body != NULL);
+ for (i = 0; i < obj->lo_objcount; i++) {
if (lmv->tgts[i].ltd_exp == NULL) {
CWARN("%s: NULL export for %d\n",
obd->obd_name, i);
continue;
}
- /* skip master obj. */
- if (id_equal_fid(&obj->id, &obj->objs[i].id))
+ /*
+ * Skip master object.
+ */
+ if (lu_fid_eq(&obj->lo_fid, &obj->lo_stripes[i].ls_fid))
continue;
-
- body->size += obj->objs[i].size;
+
+ body->size += obj->lo_stripes[i].ls_size;
}
- lmv_unlock_obj(obj);
- lmv_put_obj(obj);
+ lmv_object_put_unlock(obj);
}
-
+
RETURN(rc);
}
-static int lmv_access_check(struct obd_export *exp,
- struct lustre_id *id,
- struct ptlrpc_request **request)
+static int lmv_change_cbdata(struct obd_export *exp, const struct lu_fid *fid,
+ ldlm_iterator_t it, void *data)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc, i = id_group(id);
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int i;
+ int rc;
ENTRY;
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- LASSERT(i < lmv->desc.ld_tgt_count);
- rc = md_access_check(lmv->tgts[i].ltd_exp, id, request);
- RETURN(rc);
-}
-
-static int lmv_change_cbdata(struct obd_export *exp,
- struct lustre_id *id,
- ldlm_iterator_t it,
- void *data)
-{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int i, rc;
- ENTRY;
-
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
-
- CDEBUG(D_OTHER, "CBDATA for "DLID4"\n", OLID4(id));
- LASSERT(id_group(id) < lmv->desc.ld_tgt_count);
+ CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
- /* with CMD every object can have two locks in different
- * namespaces: lookup lock in space of mds storing direntry
- * and update/open lock in space of mds storing inode */
+ /*
+ * With CMD every object can have two locks in different namespaces:
+ * lookup lock in space of mds storing direntry and update/open lock in
+ * space of mds storing inode.
+ */
for (i = 0; i < lmv->desc.ld_tgt_count; i++)
- md_change_cbdata(lmv->tgts[i].ltd_exp, id, it, data);
-
+ md_change_cbdata(lmv->tgts[i].ltd_exp, fid, it, data);
+
RETURN(0);
}
-static int lmv_change_cbdata_name(struct obd_export *exp,
- struct lustre_id *pid,
- char *name, int len,
- struct lustre_id *cid,
- ldlm_iterator_t it,
- void *data)
+static int lmv_find_cbdata(struct obd_export *exp, const struct lu_fid *fid,
+ ldlm_iterator_t it, void *data)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lustre_id rcid = *cid;
- struct lmv_obj *obj;
- int rc = 0, mds;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int i;
+ int rc;
ENTRY;
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- LASSERT(id_group(pid) < lmv->desc.ld_tgt_count);
- LASSERT(id_group(cid) < lmv->desc.ld_tgt_count);
-
- CDEBUG(D_OTHER, "CBDATA for "DLID4":%*s -> "DLID4"\n",
- OLID4(pid), len, name, OLID4(cid));
+ CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
- /* this is default mds for directory name belongs to. */
- mds = id_group(pid);
- obj = lmv_grab_obj(obd, pid);
- if (obj) {
- /* directory is splitted. look for right mds for this name. */
- mds = raw_name2idx(obj->hashtype, obj->objcount, name, len);
- rcid = obj->objs[mds].id;
- mds = id_group(&rcid);
- lmv_put_obj(obj);
+ /*
+ * With CMD every object can have two locks in different namespaces:
+ * lookup lock in space of mds storing direntry and update/open lock in
+ * space of mds storing inode.
+ */
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ rc = md_find_cbdata(lmv->tgts[i].ltd_exp, fid, it, data);
+ if (rc)
+ RETURN(rc);
}
- rc = md_change_cbdata(lmv->tgts[mds].ltd_exp, &rcid, it, data);
+
RETURN(rc);
}
-static int lmv_valid_attrs(struct obd_export *exp, struct lustre_id *id)
+
+static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
+ struct md_open_data *mod, struct ptlrpc_request **request)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc = 0;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
ENTRY;
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- CDEBUG(D_OTHER, "validate "DLID4"\n", OLID4(id));
- LASSERT(id_group(id) < lmv->desc.ld_tgt_count);
- rc = md_valid_attrs(lmv->tgts[id_group(id)].ltd_exp, id);
- RETURN(rc);
-}
-
-static int lmv_close(struct obd_export *exp, struct mdc_op_data *op_data,
- struct obd_client_handle *och,
- struct ptlrpc_request **request)
-{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc, i = id_group(&op_data->id1);
- ENTRY;
-
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
- LASSERT(i < lmv->desc.ld_tgt_count);
- CDEBUG(D_OTHER, "CLOSE "DLID4"\n", OLID4(&op_data->id1));
- rc = md_close(lmv->tgts[i].ltd_exp, op_data, och, request);
+ CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
+ rc = md_close(tgt->ltd_exp, op_data, mod, request);
RETURN(rc);
}
-int lmv_get_mea_and_update_object(struct obd_export *exp,
- struct lustre_id *id)
+/**
+ * Called in the case MDS returns -ERESTART on create on open, what means that
+ * directory is split and its LMV presentation object has to be updated.
+ */
+int lmv_handle_split(struct obd_export *exp, const struct lu_fid *fid)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct ptlrpc_request *req = NULL;
- struct lmv_obj *obj;
- struct lustre_md md;
- int mealen, rc;
- __u64 valid;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct ptlrpc_request *req = NULL;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ struct lustre_md md;
+ struct md_op_data *op_data;
+ int mealen;
+ int rc;
+ __u64 valid;
ENTRY;
md.mea = NULL;
- mealen = MEA_SIZE_LMV(lmv);
-
+ mealen = lmv_get_easize(lmv);
+
valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA | OBD_MD_MEA;
- /* time to update mea of parent id */
- rc = md_getattr(lmv->tgts[id_group(id)].ltd_exp,
- id, valid, NULL, NULL, 0, mealen, NULL, &req);
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ /*
+ * Time to update mea of parent fid.
+ */
+
+ OBD_ALLOC_PTR(op_data);
+ if (op_data == NULL)
+ RETURN(-ENOMEM);
+
+ op_data->op_fid1 = *fid;
+ op_data->op_mode = mealen;
+ op_data->op_valid = valid;
+
+ rc = md_getattr(tgt->ltd_exp, op_data, &req);
+ OBD_FREE_PTR(op_data);
if (rc) {
CERROR("md_getattr() failed, error %d\n", rc);
GOTO(cleanup, rc);
}
- rc = mdc_req2lustre_md(exp, req, 0, NULL, &md);
+ rc = md_get_lustre_md(tgt->ltd_exp, req, NULL, exp, &md);
if (rc) {
- CERROR("mdc_req2lustre_md() failed, error %d\n", rc);
+ CERROR("md_get_lustre_md() failed, error %d\n", rc);
GOTO(cleanup, rc);
}
if (md.mea == NULL)
GOTO(cleanup, rc = -ENODATA);
- obj = lmv_create_obj(exp, id, md.mea);
+ obj = lmv_object_create(exp, fid, md.mea);
if (IS_ERR(obj))
rc = PTR_ERR(obj);
else
- lmv_put_obj(obj);
-
- obd_free_memmd(exp, (struct lov_stripe_md **)&md.mea);
+ lmv_object_put(obj);
+ obd_free_memmd(exp, (void *)&md.mea);
EXIT;
cleanup:
if (req)
return rc;
}
-int lmv_create(struct obd_export *exp, struct mdc_op_data *op_data,
+int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
const void *data, int datalen, int mode, __u32 uid,
- __u32 gid, __u64 rdev, struct ptlrpc_request **request)
+ __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
+ struct ptlrpc_request **request)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct mds_body *body;
- struct lmv_obj *obj;
- int rc, mds, loop = 0;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ int rc;
+ int loop = 0;
+ int sidx;
ENTRY;
rc = lmv_check_connect(obd);
if (!lmv->desc.ld_active_tgt_count)
RETURN(-EIO);
repeat:
- LASSERT(++loop <= 2);
- obj = lmv_grab_obj(obd, &op_data->id1);
+ ++loop;
+ LASSERT(loop <= 2);
+
+ obj = lmv_object_find(obd, &op_data->op_fid1);
if (obj) {
- mds = raw_name2idx(obj->hashtype, obj->objcount,
- op_data->name, op_data->namelen);
- op_data->id1 = obj->objs[mds].id;
- lmv_put_obj(obj);
- }
-
- CDEBUG(D_OTHER, "CREATE '%*s' on "DLID4"\n", op_data->namelen,
- op_data->name, OLID4(&op_data->id1));
-
- rc = md_create(lmv->tgts[id_group(&op_data->id1)].ltd_exp,
- op_data, data, datalen, mode, uid, gid, rdev,
- request);
+ sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
+ op_data->op_name, op_data->op_namelen);
+ op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
+ op_data->op_bias &= ~MDS_CHECK_SPLIT;
+ op_data->op_mds = obj->lo_stripes[sidx].ls_mds;
+ tgt = lmv_get_target(lmv, op_data->op_mds);
+ lmv_object_put(obj);
+ } else {
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+ op_data->op_bias |= MDS_CHECK_SPLIT;
+ op_data->op_mds = tgt->ltd_idx;
+ }
+
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
+ if (rc == -ERESTART)
+ goto repeat;
+ else if (rc)
+ RETURN(rc);
+
+ CDEBUG(D_INODE, "CREATE '%*s' on "DFID" -> mds #%x\n",
+ op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
+ op_data->op_mds);
+
+ op_data->op_flags |= MF_MDC_CANCEL_FID1;
+ rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
+ cap_effective, rdev, request);
if (rc == 0) {
if (*request == NULL)
RETURN(rc);
-
- body = lustre_msg_buf((*request)->rq_repmsg, 0,
- sizeof(*body));
- if (body == NULL)
- RETURN(-ENOMEM);
-
- CDEBUG(D_OTHER, "created. "DLID4"\n", OLID4(&op_data->id1));
+ CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
} else if (rc == -ERESTART) {
+ LASSERT(*request != NULL);
+ DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
+ "Got -ERESTART during create!\n");
+ ptlrpc_req_finished(*request);
+ *request = NULL;
+
/*
- * directory got splitted. time to update local object and
- * repeat the request with proper MDS.
+ * Directory got split. Time to update local object and repeat
+ * the request with proper MDS.
*/
- rc = lmv_get_mea_and_update_object(exp, &op_data->id1);
+ rc = lmv_handle_split(exp, &op_data->op_fid1);
if (rc == 0) {
- ptlrpc_req_finished(*request);
+ rc = lmv_allocate_slaves(obd, &op_data->op_fid1,
+ op_data, &op_data->op_fid2);
+ if (rc)
+ RETURN(rc);
goto repeat;
}
}
RETURN(rc);
}
-static int lmv_done_writing(struct obd_export *exp, struct obdo *obdo)
+static int lmv_done_writing(struct obd_export *exp,
+ struct md_op_data *op_data,
+ struct md_open_data *mod)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
ENTRY;
-
+
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- /* FIXME: choose right MDC here */
- CWARN("this method isn't implemented yet\n");
- rc = md_done_writing(lmv->tgts[0].ltd_exp, obdo);
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_done_writing(tgt->ltd_exp, op_data, mod);
RETURN(rc);
}
static int
-lmv_enqueue_slaves(struct obd_export *exp, int locktype,
- struct lookup_intent *it, int lockmode,
- struct mdc_op_data *data, struct lustre_handle *lockh,
- void *lmm, int lmmsize, ldlm_completion_callback cb_compl,
- ldlm_blocking_callback cb_blocking, void *cb_data)
+lmv_enqueue_slaves(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
+ struct lookup_intent *it, struct md_op_data *op_data,
+ struct lustre_handle *lockh, void *lmm, int lmmsize)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct mea *mea = data->mea1;
- struct mdc_op_data *data2;
- int i, rc, mds;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_stripe_md *mea = op_data->op_mea1;
+ struct md_op_data *op_data2;
+ struct lmv_tgt_desc *tgt;
+ int i;
+ int rc = 0;
ENTRY;
- OBD_ALLOC(data2, sizeof(*data2));
- if (data2 == NULL)
+ OBD_ALLOC_PTR(op_data2);
+ if (op_data2 == NULL)
RETURN(-ENOMEM);
-
+
LASSERT(mea != NULL);
for (i = 0; i < mea->mea_count; i++) {
- memset(data2, 0, sizeof(*data2));
- data2->id1 = mea->mea_ids[i];
- mds = id_group(&data2->id1);
-
- if (lmv->tgts[mds].ltd_exp == NULL)
+ memset(op_data2, 0, sizeof(*op_data2));
+ op_data2->op_fid1 = mea->mea_ids[i];
+ op_data2->op_bias = 0;
+
+ tgt = lmv_find_target(lmv, &op_data2->op_fid1);
+ if (IS_ERR(tgt))
+ GOTO(cleanup, rc = PTR_ERR(tgt));
+
+ if (tgt->ltd_exp == NULL)
continue;
- rc = md_enqueue(lmv->tgts[mds].ltd_exp, locktype, it,
- lockmode, data2, lockh + i, lmm, lmmsize,
- cb_compl, cb_blocking, cb_data);
-
- CDEBUG(D_OTHER, "take lock on slave "DLID4" -> %d/%d\n",
- OLID4(&mea->mea_ids[i]), rc, LUSTRE_IT(it)->it_status);
+ rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data2,
+ lockh + i, lmm, lmmsize, NULL, 0);
+
+ CDEBUG(D_INODE, "Take lock on slave "DFID" -> %d/%d\n",
+ PFID(&mea->mea_ids[i]), rc, it->d.lustre.it_status);
+
if (rc)
GOTO(cleanup, rc);
- if (LUSTRE_IT(it)->it_data) {
+
+ if (it->d.lustre.it_data) {
struct ptlrpc_request *req;
- req = (struct ptlrpc_request *) LUSTRE_IT(it)->it_data;
+ req = (struct ptlrpc_request *)it->d.lustre.it_data;
ptlrpc_req_finished(req);
}
-
- if (LUSTRE_IT(it)->it_status)
- GOTO(cleanup, rc = LUSTRE_IT(it)->it_status);
+
+ if (it->d.lustre.it_status)
+ GOTO(cleanup, rc = it->d.lustre.it_status);
}
-
- OBD_FREE(data2, sizeof(*data2));
- RETURN(0);
+
+ EXIT;
cleanup:
- OBD_FREE(data2, sizeof(*data2));
-
- /* drop all taken locks */
- while (--i >= 0) {
- if (lockh[i].cookie)
- ldlm_lock_decref(lockh + i, lockmode);
- lockh[i].cookie = 0;
+ OBD_FREE_PTR(op_data2);
+
+ if (rc != 0) {
+ /*
+ * Drop all taken locks.
+ */
+ while (--i >= 0) {
+ if (lockh[i].cookie)
+ ldlm_lock_decref(lockh + i, einfo->ei_mode);
+ lockh[i].cookie = 0;
+ }
}
return rc;
}
static int
-lmv_enqueue_remote(struct obd_export *exp, int lock_type,
- struct lookup_intent *it, int lock_mode,
- struct mdc_op_data *data, struct lustre_handle *lockh,
- void *lmm, int lmmsize, ldlm_completion_callback cb_compl,
- ldlm_blocking_callback cb_blocking, void *cb_data)
+lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
+ struct lookup_intent *it, struct md_op_data *op_data,
+ struct lustre_handle *lockh, void *lmm, int lmmsize,
+ int extra_lock_flags)
{
- struct ptlrpc_request *req = LUSTRE_IT(it)->it_data;
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lustre_handle plock;
- struct mdc_op_data rdata;
- struct mds_body *body = NULL;
- int rc = 0, pmode;
+ struct ptlrpc_request *req = it->d.lustre.it_data;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lustre_handle plock;
+ struct lmv_tgt_desc *tgt;
+ struct md_op_data *rdata;
+ struct lu_fid fid1;
+ struct mdt_body *body;
+ int rc = 0;
+ int pmode;
ENTRY;
- body = lustre_msg_buf(req->rq_repmsg, 1, sizeof(*body));
+ body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
LASSERT(body != NULL);
if (!(body->valid & OBD_MD_MDS))
RETURN(0);
- CDEBUG(D_OTHER, "ENQUEUE '%s' on "DLID4" -> "DLID4"\n",
- LL_IT2STR(it), OLID4(&data->id1), OLID4(&body->id1));
+ CDEBUG(D_INODE, "REMOTE_ENQUEUE '%s' on "DFID" -> "DFID"\n",
+ LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1));
- /* we got LOOKUP lock, but we really need attrs */
- pmode = LUSTRE_IT(it)->it_lock_mode;
+ /*
+ * We got LOOKUP lock, but we really need attrs.
+ */
+ pmode = it->d.lustre.it_lock_mode;
LASSERT(pmode != 0);
memcpy(&plock, lockh, sizeof(plock));
- LUSTRE_IT(it)->it_lock_mode = 0;
- LUSTRE_IT(it)->it_data = NULL;
- LASSERT((body->valid & OBD_MD_FID) != 0);
-
- memcpy(&rdata, data, sizeof(rdata));
- rdata.id1 = body->id1;
- rdata.name = NULL;
- rdata.namelen = 0;
+ it->d.lustre.it_lock_mode = 0;
+ it->d.lustre.it_data = NULL;
+ fid1 = body->fid1;
- LUSTRE_IT(it)->it_disposition &= ~DISP_ENQ_COMPLETE;
+ it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE;
ptlrpc_req_finished(req);
- rc = md_enqueue(lmv->tgts[id_group(&rdata.id1)].ltd_exp,
- lock_type, it, lock_mode, &rdata, lockh, lmm,
- lmmsize, cb_compl, cb_blocking, cb_data);
+ tgt = lmv_find_target(lmv, &fid1);
+ if (IS_ERR(tgt))
+ GOTO(out, rc = PTR_ERR(tgt));
+
+ OBD_ALLOC_PTR(rdata);
+ if (rdata == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ rdata->op_fid1 = fid1;
+ rdata->op_bias = MDS_CROSS_REF;
+
+ rc = md_enqueue(tgt->ltd_exp, einfo, it, rdata, lockh,
+ lmm, lmmsize, NULL, extra_lock_flags);
+ OBD_FREE_PTR(rdata);
+ EXIT;
+out:
ldlm_lock_decref(&plock, pmode);
- RETURN(rc);
+ return rc;
}
static int
-lmv_enqueue(struct obd_export *exp, int lock_type,
- struct lookup_intent *it, int lock_mode,
- struct mdc_op_data *data, struct lustre_handle *lockh,
- void *lmm, int lmmsize, ldlm_completion_callback cb_compl,
- ldlm_blocking_callback cb_blocking, void *cb_data)
+lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
+ struct lookup_intent *it, struct md_op_data *op_data,
+ struct lustre_handle *lockh, void *lmm, int lmmsize,
+ struct ptlrpc_request **req, int extra_lock_flags)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lmv_obj *obj;
- int rc, mds;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ int sidx;
+ int rc;
ENTRY;
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- if (data->mea1 && it->it_op == IT_UNLINK) {
- rc = lmv_enqueue_slaves(exp, lock_type, it, lock_mode,
- data, lockh, lmm, lmmsize,
- cb_compl, cb_blocking, cb_data);
+ CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
+ LL_IT2STR(it), PFID(&op_data->op_fid1));
+
+ if (op_data->op_mea1 && it && it->it_op == IT_UNLINK) {
+ rc = lmv_enqueue_slaves(exp, einfo, it, op_data,
+ lockh, lmm, lmmsize);
RETURN(rc);
}
- if (data->namelen) {
- obj = lmv_grab_obj(obd, &data->id1);
- if (obj) {
- /* directory is splitted. look for right mds for this
- * name */
- mds = raw_name2idx(obj->hashtype, obj->objcount,
- (char *)data->name, data->namelen);
- data->id1 = obj->objs[mds].id;
- lmv_put_obj(obj);
- }
+ obj = lmv_object_find(obd, &op_data->op_fid1);
+ if (obj && op_data->op_namelen) {
+ sidx = raw_name2idx(obj->lo_hashtype,
+ obj->lo_objcount,
+ (char *)op_data->op_name,
+ op_data->op_namelen);
+ op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
+ tgt = lmv_get_target(lmv, obj->lo_stripes[sidx].ls_mds);
+ } else {
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+ }
+ if (obj)
+ lmv_object_put(obj);
+
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%d\n",
+ LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
+
+ rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data, lockh,
+ lmm, lmmsize, req, extra_lock_flags);
+
+ if (rc == 0 && it && it->it_op == IT_OPEN) {
+ rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh,
+ lmm, lmmsize, extra_lock_flags);
}
- CDEBUG(D_OTHER, "ENQUEUE '%s' on "DLID4"\n", LL_IT2STR(it),
- OLID4(&data->id1));
-
- rc = md_enqueue(lmv->tgts[id_group(&data->id1)].ltd_exp,
- lock_type, it, lock_mode, data, lockh, lmm,
- lmmsize, cb_compl, cb_blocking, cb_data);
- if (rc == 0 && it->it_op == IT_OPEN)
- rc = lmv_enqueue_remote(exp, lock_type, it, lock_mode,
- data, lockh, lmm, lmmsize,
- cb_compl, cb_blocking, cb_data);
RETURN(rc);
}
static int
-lmv_getattr_lock(struct obd_export *exp, struct lustre_id *id,
- char *filename, int namelen, __u64 valid,
- unsigned int ea_size, struct ptlrpc_request **request)
+lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
+ struct ptlrpc_request **request)
{
- int rc, mds = id_group(id), loop = 0;
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lustre_id rid = *id;
- struct mds_body *body;
- struct lmv_obj *obj;
+ struct ptlrpc_request *req = NULL;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lu_fid rid = op_data->op_fid1;
+ struct lmv_tgt_desc *tgt;
+ struct mdt_body *body;
+ struct lmv_object *obj;
+ obd_valid valid = op_data->op_valid;
+ int rc;
+ int loop = 0;
+ int sidx;
ENTRY;
-
+
rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
+ if (rc)
+ RETURN(rc);
+
repeat:
- LASSERT(++loop <= 2);
- obj = lmv_grab_obj(obd, id);
+ ++loop;
+ LASSERT(loop <= 2);
+ obj = lmv_object_find(obd, &rid);
if (obj) {
- /* directory is splitted. look for right mds for this name */
- mds = raw_name2idx(obj->hashtype, obj->objcount,
- filename, namelen - 1);
- rid = obj->objs[mds].id;
- lmv_put_obj(obj);
- }
-
- CDEBUG(D_OTHER, "getattr_lock for %*s on "DLID4" -> "DLID4"\n",
- namelen, filename, OLID4(id), OLID4(&rid));
-
- rc = md_getattr_lock(lmv->tgts[id_group(&rid)].ltd_exp,
- &rid, filename, namelen,
- valid == OBD_MD_FLID ? valid : valid | OBD_MD_FID,
- ea_size, request);
+ sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
+ op_data->op_name, op_data->op_namelen);
+ rid = obj->lo_stripes[sidx].ls_fid;
+ tgt = lmv_get_target(lmv, obj->lo_stripes[sidx].ls_mds);
+ op_data->op_mds = obj->lo_stripes[sidx].ls_mds;
+ valid &= ~OBD_MD_FLCKSPLIT;
+ lmv_object_put(obj);
+ } else {
+ tgt = lmv_find_target(lmv, &rid);
+ valid |= OBD_MD_FLCKSPLIT;
+ op_data->op_mds = tgt->ltd_idx;
+ }
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" - "DFID" -> mds #%d\n",
+ op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
+ PFID(&rid), tgt->ltd_idx);
+
+ op_data->op_valid = valid;
+ op_data->op_fid1 = rid;
+ rc = md_getattr_name(tgt->ltd_exp, op_data, request);
if (rc == 0) {
- /*
- * this could be cross-node reference. in this case all we have
- * right now is lustre_id triple. we'd like to find other
- * attributes.
- */
- body = lustre_msg_buf((*request)->rq_repmsg, 0, sizeof(*body));
+ body = req_capsule_server_get(&(*request)->rq_pill,
+ &RMF_MDT_BODY);
LASSERT(body != NULL);
- LASSERT((body->valid & OBD_MD_FID) != 0
- || body->valid == OBD_MD_FLID);
if (body->valid & OBD_MD_MDS) {
- struct ptlrpc_request *req = NULL;
-
- rid = body->id1;
- CDEBUG(D_OTHER, "request attrs for "DLID4"\n", OLID4(&rid));
+ rid = body->fid1;
+ CDEBUG(D_INODE, "Request attrs for "DFID"\n",
+ PFID(&rid));
+
+ tgt = lmv_find_target(lmv, &rid);
+ if (IS_ERR(tgt)) {
+ ptlrpc_req_finished(*request);
+ RETURN(PTR_ERR(tgt));
+ }
- rc = md_getattr_lock(lmv->tgts[id_group(&rid)].ltd_exp,
- &rid, NULL, 1, valid, ea_size, &req);
+ op_data->op_fid1 = rid;
+ op_data->op_valid |= OBD_MD_FLCROSSREF;
+ op_data->op_namelen = 0;
+ op_data->op_name = NULL;
+ rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
ptlrpc_req_finished(*request);
*request = req;
}
} else if (rc == -ERESTART) {
- /* directory got splitted. time to update local object and
- * repeat the request with proper MDS */
- rc = lmv_get_mea_and_update_object(exp, &rid);
- if (rc == 0) {
- ptlrpc_req_finished(*request);
+ LASSERT(*request != NULL);
+ DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
+ "Got -ERESTART during getattr!\n");
+ ptlrpc_req_finished(*request);
+ *request = NULL;
+
+ /*
+ * Directory got split. Time to update local object and repeat
+ * the request with proper MDS.
+ */
+ rc = lmv_handle_split(exp, &rid);
+ if (rc == 0)
goto repeat;
+ }
+ RETURN(rc);
+}
+
+#define md_op_data_fid(op_data, fl) \
+ (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
+ fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
+ fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
+ fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
+ NULL)
+
+static int lmv_early_cancel_slaves(struct obd_export *exp,
+ struct md_op_data *op_data, int op_tgt,
+ ldlm_mode_t mode, int bits, int flag)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ ldlm_policy_data_t policy = {{0}};
+ struct lu_fid *op_fid;
+ struct lu_fid *st_fid;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ int rc = 0;
+ int i;
+ ENTRY;
+
+ op_fid = md_op_data_fid(op_data, flag);
+ if (!fid_is_sane(op_fid))
+ RETURN(0);
+
+ obj = lmv_object_find(obd, op_fid);
+ if (obj == NULL)
+ RETURN(-EALREADY);
+
+ policy.l_inodebits.bits = bits;
+ for (i = 0; i < obj->lo_objcount; i++) {
+ tgt = lmv_get_target(lmv, obj->lo_stripes[i].ls_mds);
+ st_fid = &obj->lo_stripes[i].ls_fid;
+ if (op_tgt != tgt->ltd_idx) {
+ CDEBUG(D_INODE, "EARLY_CANCEL slave "DFID" -> mds #%d\n",
+ PFID(st_fid), tgt->ltd_idx);
+ rc = md_cancel_unused(tgt->ltd_exp, st_fid, &policy,
+ mode, LCF_ASYNC, NULL);
+ if (rc)
+ GOTO(out_put_obj, rc);
+ } else {
+ CDEBUG(D_INODE,
+ "EARLY_CANCEL skip operation target %d on "DFID"\n",
+ op_tgt, PFID(st_fid));
+ /*
+ * Do not cancel locks for operation target, they will
+ * be handled later in underlaying layer when calling
+ * function we run on behalf of.
+ */
+ *op_fid = *st_fid;
+ op_data->op_flags |= flag;
}
}
+ EXIT;
+out_put_obj:
+ lmv_object_put(obj);
+ return rc;
+}
+
+static int lmv_early_cancel(struct obd_export *exp, struct md_op_data *op_data,
+ int op_tgt, ldlm_mode_t mode, int bits, int flag)
+{
+ struct lu_fid *fid = md_op_data_fid(op_data, flag);
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ ldlm_policy_data_t policy = {{0}};
+ struct lmv_object *obj;
+ int rc = 0;
+ ENTRY;
+
+ if (!fid_is_sane(fid))
+ RETURN(0);
+
+ obj = lmv_object_find(obd, fid);
+ if (obj) {
+ rc = lmv_early_cancel_slaves(exp, op_data, op_tgt, mode,
+ bits, flag);
+ lmv_object_put(obj);
+ } else {
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ if (tgt->ltd_idx != op_tgt) {
+ CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
+ policy.l_inodebits.bits = bits;
+ rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
+ mode, LCF_ASYNC, NULL);
+ } else {
+ CDEBUG(D_INODE,
+ "EARLY_CANCEL skip operation target %d on "DFID"\n",
+ op_tgt, PFID(fid));
+ op_data->op_flags |= flag;
+ rc = 0;
+ }
+
+ }
RETURN(rc);
}
/*
- * llite passes id of an target inode in data->id1 and id of directory in
- * data->id2
+ * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
+ * op_data->op_fid2
*/
-static int lmv_link(struct obd_export *exp, struct mdc_op_data *data,
+static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
struct ptlrpc_request **request)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lmv_obj *obj;
- int rc, mds;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ int rc;
+ int loop = 0;
+ mdsno_t mds;
+ int sidx;
ENTRY;
-
+
rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
+ if (rc)
+ RETURN(rc);
- if (data->namelen != 0) {
- /* usual link request */
- obj = lmv_grab_obj(obd, &data->id2);
- if (obj) {
- rc = raw_name2idx(obj->hashtype, obj->objcount,
- data->name, data->namelen);
- data->id2 = obj->objs[rc].id;
- lmv_put_obj(obj);
- }
+repeat:
+ ++loop;
+ LASSERT(loop <= 2);
+ LASSERT(op_data->op_namelen != 0);
+
+ CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
+ PFID(&op_data->op_fid2), op_data->op_namelen,
+ op_data->op_name, PFID(&op_data->op_fid1));
- mds = id_group(&data->id2);
-
- CDEBUG(D_OTHER,"link "DLID4":%*s to "DLID4"\n",
- OLID4(&data->id2), data->namelen, data->name,
- OLID4(&data->id1));
+ obj = lmv_object_find(obd, &op_data->op_fid2);
+ if (obj) {
+ sidx = raw_name2idx(obj->lo_hashtype,
+ obj->lo_objcount,
+ op_data->op_name,
+ op_data->op_namelen);
+ op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid;
+ mds = obj->lo_stripes[sidx].ls_mds;
+ lmv_object_put(obj);
} else {
- mds = id_group(&data->id1);
-
- /* request from MDS to acquire i_links for inode by id1 */
- CDEBUG(D_OTHER, "inc i_nlinks for "DLID4"\n",
- OLID4(&data->id1));
+ rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds);
+ if (rc)
+ RETURN(rc);
+ }
+
+ CDEBUG(D_INODE, "Forward to mds #%x ("DFID")\n",
+ mds, PFID(&op_data->op_fid1));
+
+ op_data->op_fsuid = cfs_curproc_fsuid();
+ op_data->op_fsgid = cfs_curproc_fsgid();
+ op_data->op_cap = cfs_curproc_cap_pack();
+ tgt = lmv_get_target(lmv, mds);
+
+ /*
+ * Cancel UPDATE lock on child (fid1).
+ */
+ op_data->op_flags |= MF_MDC_CANCEL_FID2;
+ rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
+ MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
+ if (rc == 0)
+ rc = md_link(tgt->ltd_exp, op_data, request);
+ if (rc == -ERESTART) {
+ LASSERT(*request != NULL);
+ DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
+ "Got -ERESTART during link!\n");
+ ptlrpc_req_finished(*request);
+ *request = NULL;
+
+ /*
+ * Directory got split. Time to update local object and repeat
+ * the request with proper MDS.
+ */
+ rc = lmv_handle_split(exp, &op_data->op_fid2);
+ if (rc == 0)
+ goto repeat;
}
- CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n",
- mds, OLID4(&data->id1));
- rc = md_link(lmv->tgts[mds].ltd_exp, data, request);
-
RETURN(rc);
}
-static int lmv_rename(struct obd_export *exp, struct mdc_op_data *data,
+static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
const char *old, int oldlen, const char *new, int newlen,
struct ptlrpc_request **request)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lmv_obj *obj;
- int rc, mds;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *src_tgt;
+ int rc;
+ int sidx;
+ int loop = 0;
+ struct lmv_object *obj;
+ mdsno_t mds1;
+ mdsno_t mds2;
ENTRY;
- CDEBUG(D_OTHER, "rename %*s in "DLID4" to %*s in "DLID4"\n",
- oldlen, old, OLID4(&data->id1), newlen, new,
- OLID4(&data->id2));
+ LASSERT(oldlen != 0);
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
-
- if (oldlen == 0) {
- /*
- * MDS with old dir entry is asking another MDS to create name
- * there.
- */
- CDEBUG(D_OTHER,
- "create %*s(%d/%d) in "DLID4" pointing "
- "to "DLID4"\n", newlen, new, oldlen, newlen,
- OLID4(&data->id2), OLID4(&data->id1));
+ CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n",
+ oldlen, old, PFID(&op_data->op_fid1),
+ newlen, new, PFID(&op_data->op_fid2));
- mds = id_group(&data->id2);
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
- /*
- * target directory can be splitted, sowe should forward request
- * to the right MDS.
- */
- obj = lmv_grab_obj(obd, &data->id2);
- if (obj) {
- mds = raw_name2idx(obj->hashtype, obj->objcount,
- (char *)new, newlen);
- data->id2 = obj->objs[mds].id;
- CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds,
- OLID4(&data->id2));
- lmv_put_obj(obj);
- }
- goto request;
+repeat:
+ ++loop;
+ LASSERT(loop <= 2);
+ obj = lmv_object_find(obd, &op_data->op_fid1);
+ if (obj) {
+ sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
+ (char *)old, oldlen);
+ op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
+ mds1 = obj->lo_stripes[sidx].ls_mds;
+ CDEBUG(D_INODE, "Parent obj "DFID"\n", PFID(&op_data->op_fid1));
+ lmv_object_put(obj);
+ } else {
+ rc = lmv_fld_lookup(lmv, &op_data->op_fid1, &mds1);
+ if (rc)
+ RETURN(rc);
}
- obj = lmv_grab_obj(obd, &data->id1);
+ obj = lmv_object_find(obd, &op_data->op_fid2);
if (obj) {
/*
- * directory is already splitted, so we have to forward request
- * to the right MDS.
+ * Directory is already split, so we have to forward request to
+ * the right MDS.
*/
- mds = raw_name2idx(obj->hashtype, obj->objcount,
- (char *)old, oldlen);
- data->id1 = obj->objs[mds].id;
- CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds,
- OLID4(&data->id1));
- lmv_put_obj(obj);
+ sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
+ (char *)new, newlen);
+
+ mds2 = obj->lo_stripes[sidx].ls_mds;
+ op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid;
+ CDEBUG(D_INODE, "Parent obj "DFID"\n", PFID(&op_data->op_fid2));
+ lmv_object_put(obj);
+ } else {
+ rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds2);
+ if (rc)
+ RETURN(rc);
}
- obj = lmv_grab_obj(obd, &data->id2);
- if (obj) {
+ op_data->op_fsuid = cfs_curproc_fsuid();
+ op_data->op_fsgid = cfs_curproc_fsgid();
+ op_data->op_cap = cfs_curproc_cap_pack();
+
+ src_tgt = lmv_get_target(lmv, mds1);
+
+ /*
+ * LOOKUP lock on src child (fid3) should also be cancelled for
+ * src_tgt in mdc_rename.
+ */
+ op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
+
+ /*
+ * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
+ * own target.
+ */
+ rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
+ LCK_EX, MDS_INODELOCK_UPDATE,
+ MF_MDC_CANCEL_FID2);
+
+ /*
+ * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt.
+ */
+ if (rc == 0) {
+ rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
+ LCK_EX, MDS_INODELOCK_LOOKUP,
+ MF_MDC_CANCEL_FID4);
+ }
+
+ /*
+ * Cancel all the locks on tgt child (fid4).
+ */
+ if (rc == 0)
+ rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
+ LCK_EX, MDS_INODELOCK_FULL,
+ MF_MDC_CANCEL_FID4);
+
+ if (rc == 0)
+ rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen,
+ new, newlen, request);
+
+ if (rc == -ERESTART) {
+ LASSERT(*request != NULL);
+ DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
+ "Got -ERESTART during rename!\n");
+ ptlrpc_req_finished(*request);
+ *request = NULL;
+
/*
- * directory is already splitted, so we have to forward request
- * to the right MDS.
+ * Directory got split. Time to update local object and repeat
+ * the request with proper MDS.
*/
- mds = raw_name2idx(obj->hashtype, obj->objcount,
- (char *)new, newlen);
-
- data->id2 = obj->objs[mds].id;
- CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds,
- OLID4(&data->id2));
- lmv_put_obj(obj);
- }
-
- mds = id_group(&data->id1);
-
-request:
- if (id_group(&data->id1) != id_group(&data->id2)) {
- CDEBUG(D_OTHER,"cross-node rename "DLID4"/%*s to "DLID4"/%*s\n",
- OLID4(&data->id1), oldlen, old, OLID4(&data->id2),
- newlen, new);
- }
-
- rc = md_rename(lmv->tgts[mds].ltd_exp, data, old, oldlen,
- new, newlen, request);
+ rc = lmv_handle_split(exp, &op_data->op_fid1);
+ if (rc == 0)
+ goto repeat;
+ }
RETURN(rc);
}
-static int lmv_setattr(struct obd_export *exp, struct mdc_op_data *data,
- struct iattr *iattr, void *ea, int ealen, void *ea2,
- int ea2len, void *ea3, int ea3len,
- struct ptlrpc_request **request)
+static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
+ void *ea, int ealen, void *ea2, int ea2len,
+ struct ptlrpc_request **request,
+ struct md_open_data **mod)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct ptlrpc_request *req;
- struct mds_body *body;
- struct lmv_obj *obj;
- int rc = 0, i;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct ptlrpc_request *req;
+ struct lmv_tgt_desc *tgt;
+ struct lmv_object *obj;
+ int rc = 0;
+ int i;
ENTRY;
rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
-
- obj = lmv_grab_obj(obd, &data->id1);
-
- CDEBUG(D_OTHER, "SETATTR for "DLID4", valid 0x%x%s\n",
- OLID4(&data->id1), iattr->ia_valid, obj ? ", splitted" : "");
-
+ if (rc)
+ RETURN(rc);
+
+ obj = lmv_object_find(obd, &op_data->op_fid1);
+
+ CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x%s\n",
+ PFID(&op_data->op_fid1), op_data->op_attr.ia_valid,
+ obj ? ", split" : "");
+
+ op_data->op_flags |= MF_MDC_CANCEL_FID1;
if (obj) {
- for (i = 0; i < obj->objcount; i++) {
- data->id1 = obj->objs[i].id;
-
- rc = md_setattr(lmv->tgts[id_group(&data->id1)].ltd_exp,
- data, iattr, ea, ealen, ea2, ea2len,
- ea3, ea3len, &req);
-
- if (id_equal_fid(&obj->id, &obj->objs[i].id)) {
+ for (i = 0; i < obj->lo_objcount; i++) {
+ op_data->op_fid1 = obj->lo_stripes[i].ls_fid;
+
+ tgt = lmv_get_target(lmv, obj->lo_stripes[i].ls_mds);
+ if (IS_ERR(tgt)) {
+ rc = PTR_ERR(tgt);
+ break;
+ }
+
+ rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen,
+ ea2, ea2len, &req, mod);
+
+ if (lu_fid_eq(&obj->lo_fid, &obj->lo_stripes[i].ls_fid)) {
/*
- * this is master object and this request should
+ * This is master object and this request should
* be returned back to llite.
*/
*request = req;
if (rc)
break;
}
- lmv_put_obj(obj);
+ lmv_object_put(obj);
} else {
- LASSERT(id_group(&data->id1) < lmv->desc.ld_tgt_count);
- rc = md_setattr(lmv->tgts[id_group(&data->id1)].ltd_exp,
- data, iattr, ea, ealen, ea2, ea2len, ea3,
- ea3len, request);
- if (rc == 0) {
- body = lustre_msg_buf((*request)->rq_repmsg, 0,
- sizeof(*body));
- LASSERT(body != NULL);
- LASSERT((body->valid & OBD_MD_FID) != 0);
- LASSERT(id_group(&body->id1) == id_group(&data->id1));
- }
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, ea2,
+ ea2len, request, mod);
}
RETURN(rc);
}
-static int lmv_sync(struct obd_export *exp, struct lustre_id *id,
- struct ptlrpc_request **request)
+static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid,
+ struct obd_capa *oc, struct ptlrpc_request **request)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
ENTRY;
rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
+ if (rc)
+ RETURN(rc);
- rc = md_sync(lmv->tgts[id_group(id)].ltd_exp,
- id, request);
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_sync(tgt->ltd_exp, fid, oc, request);
RETURN(rc);
}
-int lmv_dirobj_blocking_ast(struct ldlm_lock *lock,
- struct ldlm_lock_desc *desc,
- void *data, int flag)
+/**
+ * Main purpose of LMV blocking ast is to remove split directory LMV
+ * presentation object (struct lmv_object) attached to the lock being revoked.
+ */
+int lmv_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
+ void *data, int flag)
{
- struct lustre_handle lockh;
- struct lmv_obj *obj;
- int rc;
+ struct lustre_handle lockh;
+ struct lmv_object *obj;
+ int rc;
ENTRY;
switch (flag) {
}
break;
case LDLM_CB_CANCELING:
- /* time to drop cached attrs for dirobj */
+ /*
+ * Time to drop cached attrs for split directory object
+ */
obj = lock->l_ast_data;
if (obj) {
- CDEBUG(D_OTHER, "cancel %s on "LPU64"/"LPU64
- ", master "DLID4"\n",
+ CDEBUG(D_INODE, "Cancel %s on "LPU64"/"LPU64
+ ", master "DFID"\n",
lock->l_resource->lr_name.name[3] == 1 ?
"LOOKUP" : "UPDATE",
lock->l_resource->lr_name.name[0],
- lock->l_resource->lr_name.name[1],
- OLID4(&obj->id));
- lmv_put_obj(obj);
+ lock->l_resource->lr_name.name[1],
+ PFID(&obj->lo_fid));
+ lmv_object_put(obj);
}
break;
default:
RETURN(0);
}
-static void lmv_remove_dots(struct page *page)
+static void lmv_hash_adjust(__u64 *hash, __u64 hash_adj)
{
- unsigned limit = PAGE_CACHE_SIZE;
- char *kaddr = page_address(page);
- struct ext2_dir_entry_2 *p;
- unsigned offs, rec_len;
+ __u64 val;
- for (offs = 0; offs <= limit - EXT2_DIR_REC_LEN(1); offs += rec_len) {
- p = (struct ext2_dir_entry_2 *)(kaddr + offs);
- rec_len = le16_to_cpu(p->rec_len);
-
- if ((p->name_len == 1 && p->name[0] == '.') ||
- (p->name_len == 2 && p->name[0] == '.' && p->name[1] == '.'))
- p->inode = 0;
- }
+ val = le64_to_cpu(*hash);
+ if (val < hash_adj)
+ val += MAX_HASH_SIZE;
+ if (val != MDS_DIR_END_OFF)
+ *hash = cpu_to_le64(val - hash_adj);
}
-static int lmv_readpage(struct obd_export *exp, struct lustre_id *id,
- __u64 offset, struct page *page,
- struct ptlrpc_request **request)
+static __u32 lmv_node_rank(struct obd_export *exp, const struct lu_fid *fid)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lustre_id rid = *id;
- struct lmv_obj *obj;
- int rc, i;
- ENTRY;
-
-#warning "we need well-desgined readdir() implementation"
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
-
- LASSERT(id_group(id) < lmv->desc.ld_tgt_count);
- CDEBUG(D_OTHER, "READPAGE at %llu from "DLID4"\n",
- offset, OLID4(&rid));
-
- obj = lmv_grab_obj(obd, id);
- if (obj) {
- lmv_lock_obj(obj);
-
- /* find dirobj containing page with requested offset. */
- for (i = 0; i < obj->objcount; i++) {
- if (offset < obj->objs[i].size)
- break;
- offset -= obj->objs[i].size;
- }
- rid = obj->objs[i].id;
-
- lmv_unlock_obj(obj);
- lmv_put_obj(obj);
-
- CDEBUG(D_OTHER, "forward to "DLID4" with offset %lu\n",
- OLID4(&rid), (unsigned long)offset);
- }
- rc = md_readpage(lmv->tgts[id_group(&rid)].ltd_exp, &rid,
- offset, page, request);
-
- if (rc == 0 && !id_equal_fid(&rid, id))
- /* this page isn't from master object. To avoid "." and ".."
- * duplication in directory, we have to remove them from all
- * slave objects */
- lmv_remove_dots(page);
-
- RETURN(rc);
-}
+ __u64 id;
+ struct obd_import *imp;
-static int lmv_unlink_slaves(struct obd_export *exp, struct mdc_op_data *data,
- struct ptlrpc_request **req)
-{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct mea *mea = data->mea1;
- struct mdc_op_data *data2;
- int i, rc = 0;
- ENTRY;
+ /*
+ * XXX: to get nid we assume that underlying obd device is mdc.
+ */
+ imp = class_exp2cliimp(exp);
+ id = imp->imp_connection->c_self + fid_flatten(fid);
- OBD_ALLOC(data2, sizeof(*data2));
- if (data2 == NULL)
- RETURN(-ENOMEM);
-
- LASSERT(mea != NULL);
- for (i = 0; i < mea->mea_count; i++) {
- memset(data2, 0, sizeof(*data2));
- data2->id1 = mea->mea_ids[i];
- data2->create_mode = MDS_MODE_DONT_LOCK | S_IFDIR;
-
- if (lmv->tgts[id_group(&data2->id1)].ltd_exp == NULL)
- continue;
+ CDEBUG(D_INODE, "Readpage node rank: "LPX64" "DFID" "LPX64" "LPX64"\n",
+ imp->imp_connection->c_self, PFID(fid), id, id ^ (id >> 32));
- rc = md_unlink(lmv->tgts[id_group(&data2->id1)].ltd_exp,
- data2, req);
-
- CDEBUG(D_OTHER, "unlink slave "DLID4" -> %d\n",
- OLID4(&mea->mea_ids[i]), rc);
-
- if (*req) {
- ptlrpc_req_finished(*req);
- *req = NULL;
- }
- if (rc)
- RETURN(rc);
- }
- OBD_FREE(data2, sizeof(*data2));
- RETURN(rc);
+ return id ^ (id >> 32);
}
-static int lmv_delete_inode(struct obd_export *exp, struct lustre_id *id)
+static int lmv_readpage(struct obd_export *exp, struct md_op_data *op_data,
+ struct page **pages, struct ptlrpc_request **request)
{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_object *obj;
+ struct lu_fid rid = op_data->op_fid1;
+ __u64 offset = op_data->op_offset;
+ __u64 hash_adj = 0;
+ __u32 rank = 0;
+ __u64 seg_size = 0;
+ __u64 tgt_tmp = 0;
+ int tgt_idx = 0;
+ int tgt0_idx = 0;
+ int rc;
+ int nr = 0;
+ int i;
+ /* number of pages read, in CFS_PAGE_SIZE */
+ int nrdpgs;
+ /* number of pages transferred in LU_PAGE_SIZE */
+ int nlupgs;
+ struct lmv_stripe *los;
+ struct lmv_tgt_desc *tgt;
+ struct lu_dirpage *dp;
+ struct lu_dirent *ent;
ENTRY;
- LASSERT(exp && id);
- if (lmv_delete_obj(exp, id)) {
- CDEBUG(D_OTHER, "lmv object "DLID4" is destroyed.\n",
- OLID4(id));
- }
- RETURN(0);
-}
-
-static int lmv_unlink(struct obd_export *exp, struct mdc_op_data *data,
- struct ptlrpc_request **request)
-{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc, i = 0;
- ENTRY;
-
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
-
- if (data->namelen == 0 && data->mea1 != NULL) {
- /* mds asks to remove slave objects */
- rc = lmv_unlink_slaves(exp, data, request);
+ rc = lmv_check_connect(obd);
+ if (rc)
RETURN(rc);
- }
- if (data->namelen != 0) {
- struct lmv_obj *obj;
-
- obj = lmv_grab_obj(obd, &data->id1);
- if (obj) {
- i = raw_name2idx(obj->hashtype, obj->objcount,
- data->name, data->namelen);
- data->id1 = obj->objs[i].id;
- lmv_put_obj(obj);
- }
- CDEBUG(D_OTHER, "unlink '%*s' in "DLID4" -> %u\n",
- data->namelen, data->name, OLID4(&data->id1),
- i);
- } else {
- CDEBUG(D_OTHER, "drop i_nlink on "DLID4"\n",
- OLID4(&data->id1));
- }
- rc = md_unlink(lmv->tgts[id_group(&data->id1)].ltd_exp,
- data, request);
- RETURN(rc);
-}
-
-static struct obd_device *lmv_get_real_obd(struct obd_export *exp,
- struct lustre_id *id)
-{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- int rc;
- ENTRY;
+ CDEBUG(D_INODE, "READPAGE at "LPX64" from "DFID"\n", offset, PFID(&rid));
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(ERR_PTR(rc));
- obd = lmv->tgts[id_group(id)].ltd_exp->exp_obd;
- EXIT;
-
- return obd;
-}
+ /*
+ * This case handle directory lookup in clustered metadata case (i.e.
+ * split directory is located on multiple md servers.)
+ * each server keeps directory entries for certain range of hashes.
+ * E.g. we have N server and suppose hash range is 0 to MAX_HASH.
+ * first server will keep records with hashes [ 0 ... MAX_HASH / N - 1],
+ * second one with hashes [MAX_HASH / N ... 2 * MAX_HASH / N] and
+ * so on....
+ * readdir can simply start reading entries from 0 - N server in
+ * order but that will not scale well as all client will request dir in
+ * to server in same order.
+ * Following algorithm does optimization:
+ * Instead of doing readdir in 1, 2, ...., N order, client with a
+ * rank R does readdir in R, R + 1, ..., N, 1, ... R - 1 order.
+ * (every client has rank R)
+ * But ll_readdir() expect offset range [0 to MAX_HASH/N) but
+ * since client ask dir from MDS{R} client has pages with offsets
+ * [R*MAX_HASH/N ... (R + 1)*MAX_HASH/N] there for we do hash_adj
+ * on hash values that we get.
+ */
+ obj = lmv_object_find_lock(obd, &rid);
+ if (obj) {
+ nr = obj->lo_objcount;
+ LASSERT(nr > 0);
+ seg_size = MAX_HASH_SIZE;
+ do_div(seg_size, nr);
+ los = obj->lo_stripes;
+ tgt = lmv_get_target(lmv, los[0].ls_mds);
+ rank = lmv_node_rank(tgt->ltd_exp, &rid) % nr;
+ tgt_tmp = offset;
+ do_div(tgt_tmp, seg_size);
+ tgt0_idx = do_div(tgt_tmp, nr);
+ tgt_idx = (tgt0_idx + rank) % nr;
+
+ if (tgt_idx < tgt0_idx)
+ /*
+ * Wrap around.
+ *
+ * Last segment has unusual length due to division
+ * rounding.
+ */
+ hash_adj = MAX_HASH_SIZE - seg_size * nr;
+ else
+ hash_adj = 0;
-static int lmv_obd_create_single(struct obd_export *exp, struct obdo *oa,
- void *acl, int acl_size,
- struct lov_stripe_md **ea,
- struct obd_trans_info *oti)
-{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lov_stripe_md obj_md;
- struct lov_stripe_md *obj_mdp = &obj_md;
- int rc = 0;
- ENTRY;
+ hash_adj += rank * seg_size;
- LASSERT(ea == NULL);
- LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
+ CDEBUG(D_INODE, "Readpage hash adjustment: %x "LPX64" "
+ LPX64"/%x -> "LPX64"/%x\n", rank, hash_adj,
+ offset, tgt0_idx, offset + hash_adj, tgt_idx);
- rc = obd_create(lmv->tgts[oa->o_mds].ltd_exp, oa,
- acl, acl_size, &obj_mdp, oti);
+ offset = (offset + hash_adj) & MAX_HASH_SIZE;
+ rid = obj->lo_stripes[tgt_idx].ls_fid;
+ tgt = lmv_get_target(lmv, los[tgt_idx].ls_mds);
- RETURN(rc);
-}
+ CDEBUG(D_INODE, "Forward to "DFID" with offset %lu i %d\n",
+ PFID(&rid), (unsigned long)offset, tgt_idx);
+ } else
+ tgt = lmv_find_target(lmv, &rid);
-/*
- * to be called from MDS only. @oa should have correct store cookie and o_fid
- * values for "master" object, as it will be used.
- */
-int lmv_obd_create(struct obd_export *exp, struct obdo *oa,
- void *acl, int acl_size,
- struct lov_stripe_md **ea, struct obd_trans_info *oti)
-{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lustre_id mid;
- int i, c, rc = 0;
- struct mea *mea;
- ENTRY;
+ if (IS_ERR(tgt))
+ GOTO(cleanup, rc = PTR_ERR(tgt));
- rc = lmv_check_connect(obd);
+ op_data->op_fid1 = rid;
+ rc = md_readpage(tgt->ltd_exp, op_data, pages, request);
if (rc)
- RETURN(rc);
-
- LASSERT(oa != NULL);
-
- if (ea == NULL) {
- rc = lmv_obd_create_single(exp, oa, acl, acl_size, NULL, oti);
- if (rc)
- CERROR("Can't create object, rc = %d\n", rc);
- RETURN(rc);
- }
-
- /* acl is only suppied when mds create single remote obj */
- LASSERT(acl == NULL && acl_size == 0);
-
- if (*ea == NULL) {
- rc = obd_alloc_diskmd(exp, (struct lov_mds_md **)ea);
- if (rc < 0) {
- CERROR("obd_alloc_diskmd() failed, error %d\n",
- rc);
- RETURN(rc);
- } else
- rc = 0;
-
- if (*ea == NULL)
- RETURN(-ENOMEM);
- }
-
- /*
- * here we should take care about splitted dir, so store cookie and fid
- * for "master" object should already be allocated and passed in @oa.
- */
- LASSERT(oa->o_id != 0);
- LASSERT(oa->o_fid != 0);
+ GOTO(cleanup, rc);
- /* save "master" object id */
- obdo2id(&mid, oa);
+ nrdpgs = ((*request)->rq_bulk->bd_nob_transferred + CFS_PAGE_SIZE - 1)
+ >> CFS_PAGE_SHIFT;
+ nlupgs = (*request)->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
+ LASSERT(!((*request)->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
+ LASSERT(nrdpgs > 0 && nrdpgs <= op_data->op_npages);
- mea = (struct mea *)*ea;
- mea->mea_master = -1;
- mea->mea_magic = MEA_MAGIC_ALL_CHARS;
+ CDEBUG(D_INODE, "read %d(%d)/%d pages\n", nrdpgs, nlupgs,
+ op_data->op_npages);
- if (!mea->mea_count || mea->mea_count > lmv->desc.ld_tgt_count)
- mea->mea_count = lmv->desc.ld_tgt_count;
+ for (i = 0; i < nrdpgs; i++) {
+#if CFS_PAGE_SIZE > LU_PAGE_SIZE
+ struct lu_dirpage *first;
+ __u64 hash_end = 0;
+ __u32 flags = 0;
+#endif
+ struct lu_dirent *tmp = NULL;
- for (i = 0, c = 0; c < mea->mea_count && i < lmv->desc.ld_tgt_count; i++) {
- struct lov_stripe_md obj_md;
- struct lov_stripe_md *obj_mdp = &obj_md;
-
- if (lmv->tgts[i].ltd_exp == NULL) {
- /* this is "master" MDS */
- mea->mea_master = i;
- mea->mea_ids[c] = mid;
- c++;
- continue;
+ dp = cfs_kmap(pages[i]);
+ if (obj) {
+ lmv_hash_adjust(&dp->ldp_hash_start, hash_adj);
+ lmv_hash_adjust(&dp->ldp_hash_end, hash_adj);
+ LASSERT(le64_to_cpu(dp->ldp_hash_start) <=
+ op_data->op_offset);
+
+ if ((tgt0_idx != nr - 1) &&
+ (le64_to_cpu(dp->ldp_hash_end) == MDS_DIR_END_OFF))
+ {
+ dp->ldp_hash_end = cpu_to_le32(seg_size *
+ (tgt0_idx + 1));
+ CDEBUG(D_INODE,
+ ""DFID" reset end "LPX64" tgt %d\n",
+ PFID(&rid),
+ (__u64)le64_to_cpu(dp->ldp_hash_end),
+ tgt_idx);
+ }
}
- /*
- * "master" MDS should always be part of stripped dir,
- * so scan for it.
- */
- if (mea->mea_master == -1 && c == mea->mea_count - 1)
- continue;
-
- oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLTYPE | OBD_MD_FLMODE |
- OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLID;
-
- rc = obd_create(lmv->tgts[c].ltd_exp, oa, NULL, 0,
- &obj_mdp, oti);
- if (rc) {
- CERROR("obd_create() failed on MDT target %d, "
- "error %d\n", c, rc);
- RETURN(rc);
+ ent = lu_dirent_start(dp);
+#if CFS_PAGE_SIZE > LU_PAGE_SIZE
+ first = dp;
+ hash_end = dp->ldp_hash_end;
+repeat:
+#endif
+ nlupgs--;
+ for (tmp = ent; ent != NULL;
+ tmp = ent, ent = lu_dirent_next(ent)) {
+ if (obj)
+ lmv_hash_adjust(&ent->lde_hash, hash_adj);
}
- CDEBUG(D_OTHER, "dirobj at mds %d: "LPU64"/%u\n",
- i, oa->o_id, oa->o_generation);
-
+#if CFS_PAGE_SIZE > LU_PAGE_SIZE
+ dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
+ if (((unsigned long)dp & ~CFS_PAGE_MASK) && nlupgs > 0) {
+ ent = lu_dirent_start(dp);
- /*
- * here, when object is created (or it is master and was passed
- * from caller) on desired MDS we save its fid to local mea_ids.
- */
- LASSERT(oa->o_fid);
+ if (obj) {
+ lmv_hash_adjust(&dp->ldp_hash_end, hash_adj);
+ if ((tgt0_idx != nr - 1) &&
+ (le64_to_cpu(dp->ldp_hash_end) ==
+ MDS_DIR_END_OFF)) {
+ hash_end = cpu_to_le32(seg_size *
+ (tgt0_idx + 1));
+ CDEBUG(D_INODE,
+ ""DFID" reset end "LPX64" tgt %d\n",
+ PFID(&rid),
+ (__u64)le64_to_cpu(hash_end),
+ tgt_idx);
+ }
+ }
+ hash_end = dp->ldp_hash_end;
+ flags = dp->ldp_flags;
+
+ if (tmp) {
+ /* enlarge the end entry lde_reclen from 0 to
+ * first entry of next lu_dirpage, in this way
+ * several lu_dirpages can be stored into one
+ * client page on client. */
+ tmp = ((void *)tmp) +
+ le16_to_cpu(tmp->lde_reclen);
+ tmp->lde_reclen =
+ cpu_to_le16((char *)(dp->ldp_entries) -
+ (char *)tmp);
+ goto repeat;
+ }
+ }
+ first->ldp_hash_end = hash_end;
+ first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
+ first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
+#else
+ SET_BUT_UNUSED(tmp);
+#endif
+ cfs_kunmap(pages[i]);
+ }
+ EXIT;
+cleanup:
+ if (obj)
+ lmv_object_put_unlock(obj);
+ return rc;
+}
- /*
- * store cookie should be defined here for both cases (master
- * object and not master), because master is already created.
- */
- LASSERT(oa->o_id);
+static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
+ struct ptlrpc_request **request)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt = NULL;
+ struct lmv_object *obj;
+ int rc;
+ int sidx;
+ int loop = 0;
+ ENTRY;
- /* fill mea by store cookie and fid */
- obdo2id(&mea->mea_ids[c], oa);
- c++;
- }
- LASSERT(c == mea->mea_count);
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
- CDEBUG(D_OTHER, "%d dirobjects created\n",
- (int)mea->mea_count);
-
- RETURN(rc);
-}
+repeat:
+ ++loop;
+ LASSERT(loop <= 2);
+ LASSERT(op_data->op_namelen != 0);
-static int lmv_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
- struct obd_device *tgt, int count,
- struct llog_catid *logid)
-{
- struct llog_ctxt *ctxt;
- int rc;
- ENTRY;
+ obj = lmv_object_find(obd, &op_data->op_fid1);
+ if (obj) {
+ sidx = raw_name2idx(obj->lo_hashtype,
+ obj->lo_objcount,
+ op_data->op_name,
+ op_data->op_namelen);
+ op_data->op_bias &= ~MDS_CHECK_SPLIT;
+ op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
+ tgt = lmv_get_target(lmv,
+ obj->lo_stripes[sidx].ls_mds);
+ lmv_object_put(obj);
+ CDEBUG(D_INODE, "UNLINK '%*s' in "DFID" -> %u\n",
+ op_data->op_namelen, op_data->op_name,
+ PFID(&op_data->op_fid1), sidx);
+ }
+
+ if (tgt == NULL) {
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+ op_data->op_bias |= MDS_CHECK_SPLIT;
+ }
+
+ op_data->op_fsuid = cfs_curproc_fsuid();
+ op_data->op_fsgid = cfs_curproc_fsgid();
+ op_data->op_cap = cfs_curproc_cap_pack();
- rc = obd_llog_setup(obd, llogs, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
- &llog_client_ops);
- if (rc == 0) {
- ctxt = llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT);
- ctxt->loc_imp = tgt->u.cli.cl_import;
- }
+ /*
+ * If child's fid is given, cancel unused locks for it if it is from
+ * another export than parent.
+ *
+ * LOOKUP lock for child (fid3) should also be cancelled on parent
+ * tgt_tgt in mdc_unlink().
+ */
+ op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
- RETURN(rc);
-}
+ /*
+ * Cancel FULL locks on child (fid3).
+ */
+ rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
+ MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
-static int lmv_llog_finish(struct obd_device *obd,
- struct obd_llogs *llogs, int count)
-{
- int rc;
- ENTRY;
+ if (rc == 0)
+ rc = md_unlink(tgt->ltd_exp, op_data, request);
+
+ if (rc == -ERESTART) {
+ LASSERT(*request != NULL);
+ DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
+ "Got -ERESTART during unlink!\n");
+ ptlrpc_req_finished(*request);
+ *request = NULL;
- rc = obd_llog_cleanup(llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT));
+ /*
+ * Directory got split. Time to update local object and repeat
+ * the request with proper MDS.
+ */
+ rc = lmv_handle_split(exp, &op_data->op_fid1);
+ if (rc == 0)
+ goto repeat;
+ }
RETURN(rc);
}
-static int lmv_precleanup(struct obd_device *obd, int flags)
+static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
{
+ struct lmv_obd *lmv = &obd->u.lmv;
int rc = 0;
-
- rc = obd_llog_finish(obd, &obd->obd_llogs, 0);
- if (rc != 0)
- CERROR("failed to cleanup llogging subsystems\n");
+ switch (stage) {
+ case OBD_CLEANUP_EARLY:
+ /* XXX: here should be calling obd_precleanup() down to
+ * stack. */
+ break;
+ case OBD_CLEANUP_EXPORTS:
+ fld_client_proc_fini(&lmv->lmv_fld);
+ lprocfs_obd_cleanup(obd);
+ rc = obd_llog_finish(obd, 0);
+ if (rc != 0)
+ CERROR("failed to cleanup llogging subsystems\n");
+ break;
+ default:
+ break;
+ }
RETURN(rc);
}
-static int lmv_get_info(struct obd_export *exp, __u32 keylen,
- void *key, __u32 *vallen, void *val)
+static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
+ __u32 keylen, void *key, __u32 *vallen, void *val,
+ struct lov_stripe_md *lsm)
{
- struct obd_device *obd;
- struct lmv_obd *lmv;
- int rc = 0;
+ struct obd_device *obd;
+ struct lmv_obd *lmv;
+ int rc = 0;
ENTRY;
obd = class_exp2obd(exp);
if (obd == NULL) {
- CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
+ CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
exp->exp_handle.h_cookie);
RETURN(-EINVAL);
}
lmv = &obd->u.lmv;
- if (keylen == strlen("mdsize") && !strcmp(key, "mdsize")) {
- __u32 *mdsize = val;
- *vallen = sizeof(__u32);
- *mdsize = sizeof(struct lustre_id) * lmv->desc.ld_tgt_count
- + sizeof(struct mea);
- RETURN(0);
- } else if (keylen == strlen("mdsnum") && !strcmp(key, "mdsnum")) {
- struct obd_uuid *cluuid = &lmv->cluuid;
+ if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
struct lmv_tgt_desc *tgts;
- __u32 *mdsnum = val;
int i;
- tgts = lmv->tgts;
- for (i = 0; i < lmv->desc.ld_tgt_count; i++, tgts++) {
- if (obd_uuid_equals(&tgts->uuid, cluuid)) {
- *vallen = sizeof(__u32);
- *mdsnum = i;
- RETURN(0);
- }
- }
- LASSERT(0);
- } else if (keylen == strlen("rootid") && !strcmp(key, "rootid")) {
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
-
- /* getting rootid from first MDS. */
- rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key,
- vallen, val);
- RETURN(rc);
- } else if (keylen >= strlen("lmvdesc") && !strcmp(key, "lmvdesc")) {
- struct lmv_desc *desc_ret = val;
- *desc_ret = lmv->desc;
- RETURN(0);
- } else if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
- struct lmv_tgt_desc *tgts;
- int i;
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
-
LASSERT(*vallen == sizeof(__u32));
for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count;
i++, tgts++) {
- /* all tgts should be connected when this get called. */
+ /*
+ * All tgts should be connected when this gets called.
+ */
if (!tgts || !tgts->ltd_exp) {
CERROR("target not setup?\n");
continue;
}
- if (!obd_get_info(tgts->ltd_exp, keylen, key,
- vallen, val))
+ if (!obd_get_info(env, tgts->ltd_exp, keylen, key,
+ vallen, val, NULL))
RETURN(0);
}
RETURN(-EINVAL);
- } else if (keylen >= strlen("lovdesc") && !strcmp(key, "lovdesc")) {
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
-
- /* forwarding this request to first MDS, it should know LOV
- * desc. */
- rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key,
- vallen, val);
- RETURN(rc);
- } else if (keylen >= strlen("getext") && !strcmp(key, "getext")) {
- struct lmv_tgt_desc *tgts;
- int i;
-
+ } else if (KEY_IS(KEY_MAX_EASIZE) || KEY_IS(KEY_CONN_DATA)) {
rc = lmv_check_connect(obd);
if (rc)
RETURN(rc);
- LASSERT(*vallen == sizeof(struct fid_extent));
- for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count;
- i++, tgts++) {
-
- /* all tgts should be connected when this get called. */
- if (!tgts || !tgts->ltd_exp) {
- CERROR("target not setup?\n");
- continue;
- }
-
- rc = obd_get_info(tgts->ltd_exp, keylen, key,
- vallen, val);
- if (rc)
- RETURN(rc);
+ /*
+ * Forwarding this request to first MDS, it should know LOV
+ * desc.
+ */
+ rc = obd_get_info(env, lmv->tgts[0].ltd_exp, keylen, key,
+ vallen, val, NULL);
+ if (!rc && KEY_IS(KEY_CONN_DATA)) {
+ exp->exp_connect_flags =
+ ((struct obd_connect_data *)val)->ocd_connect_flags;
}
+ RETURN(rc);
+ } else if (KEY_IS(KEY_TGT_COUNT)) {
+ *((int *)val) = lmv->desc.ld_tgt_count;
RETURN(0);
}
- CDEBUG(D_IOCTL, "invalid key\n");
+ CDEBUG(D_IOCTL, "Invalid key\n");
RETURN(-EINVAL);
}
-int lmv_set_info(struct obd_export *exp, obd_count keylen,
- void *key, obd_count vallen, void *val)
+int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
+ obd_count keylen, void *key, obd_count vallen,
+ void *val, struct ptlrpc_request_set *set)
{
struct lmv_tgt_desc *tgt;
struct obd_device *obd;
obd = class_exp2obd(exp);
if (obd == NULL) {
- CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
+ CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
exp->exp_handle.h_cookie);
RETURN(-EINVAL);
}
lmv = &obd->u.lmv;
- if (keylen >= strlen("inter_mds") && strcmp(key, "inter_mds") == 0) {
- lmv->server_timeout = 1;
- lmv_set_timeouts(obd);
- RETURN(0);
- }
-
- /* maybe this could be default */
- if ((keylen == strlen("sec") && strcmp(key, "sec") == 0) ||
- (keylen == strlen("sec_flags") && strcmp(key, "sec_flags") == 0) ||
- (keylen == strlen("nllu") && strcmp(key, "nllu") == 0)) {
- struct obd_export *exp;
- int err, i;
-
- spin_lock(&lmv->lmv_lock);
- for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count;
- i++, tgt++) {
- exp = tgt->ltd_exp;
- /* during setup time the connections to mdc might
- * haven't been established.
- */
- if (exp == NULL) {
- struct obd_device *tgt_obd;
-
- tgt_obd = class_find_client_obd(&tgt->uuid,
- OBD_MDC_DEVICENAME,
- &obd->obd_uuid);
- if (!tgt_obd) {
- CERROR("can't set info %s, "
- "device %s not attached?\n",
- (char *) key, tgt->uuid.uuid);
- rc = -EINVAL;
- continue;
- }
- exp = tgt_obd->obd_self_export;
- }
-
- err = obd_set_info(exp, keylen, key, vallen, val);
- if (!rc)
- rc = err;
- }
- spin_unlock(&lmv->lmv_lock);
+ if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX)) {
+ int i, err = 0;
- RETURN(rc);
- }
- if (keylen == 5 && strcmp(key, "audit") == 0) {
- struct audit_attr_msg * msg = val;
- int mds = id_group(&msg->id);
- int i;
- LASSERT(mds < lmv->desc.ld_tgt_count);
-
- if (IS_AUDIT_OP(msg->attr, AUDIT_FS) ||
- IS_AUDIT_OP(msg->attr, AUDIT_SYNC)) {
- //FS audit, send message to all mds
- for (i = 0; i < lmv->desc.ld_tgt_count;i++) {
- obd_set_info(lmv->tgts[i].ltd_exp,
- keylen, key, vallen, val);
- }
- }
- else if (IS_AUDIT_OP(msg->attr, AUDIT_DIR)) {
- //audit for dir.
- //if dir is splitted, send RPC to all mds involved
- struct lmv_obj *obj;
- struct lustre_id rid;
- int i;
-
- obj = lmv_grab_obj(obd, &msg->id);
- if (obj) {
- lmv_lock_obj(obj);
- for (i = 0; i < obj->objcount; i++) {
- rid = obj->objs[i].id;
- mds = id_group(&rid);
- obd_set_info(lmv->tgts[mds].ltd_exp,
- keylen, key,
- vallen, val);
- }
- lmv_unlock_obj(obj);
- lmv_put_obj(obj);
- }
- else {
- rc = obd_set_info(lmv->tgts[mds].ltd_exp,
- keylen, key, vallen, val);
- }
- }
- else {
- //set audit for file
- rc = obd_set_info(lmv->tgts[mds].ltd_exp,
- keylen, key, vallen, val);
- }
- RETURN(rc);
- }
- if (((keylen == strlen("flush_cred") &&
- strcmp(key, "flush_cred") == 0)) ||
- ((keylen == strlen("crypto_type") &&
- strcmp(key, "crypto_type") == 0))) {
- int i;
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ tgt = &lmv->tgts[i];
- for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count;
- i++, tgt++) {
if (!tgt->ltd_exp)
continue;
- rc = obd_set_info(tgt->ltd_exp,
- keylen, key, vallen, val);
- if (rc)
- RETURN(rc);
- }
-
- RETURN(0);
- }
-
- if (keylen == strlen("ids") && memcmp(key, "ids", keylen) == 0) {
- struct lustre_id *id = (struct lustre_id *)val;
-
- rc = lmv_check_connect(obd);
- if (rc)
- RETURN(rc);
- rc = obd_set_info(lmv->tgts[id_group(id)].ltd_exp,
- keylen, key, vallen, val);
- RETURN(rc);
- }
+ err = obd_set_info_async(env, tgt->ltd_exp,
+ keylen, key, vallen, val, set);
+ if (err && rc == 0)
+ rc = err;
+ }
- if (keylen == strlen("chkconnect") &&
- memcmp(key, "chkconnect", keylen) == 0) {
- rc = lmv_check_connect(obd);
RETURN(rc);
}
int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
struct lov_stripe_md *lsm)
{
- struct obd_device *obd = class_exp2obd(exp);
- struct lmv_obd *lmv = &obd->u.lmv;
- struct mea *meap, *lsmp;
- int mea_size, i;
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_stripe_md *meap;
+ struct lmv_stripe_md *lsmp;
+ int mea_size;
+ int i;
ENTRY;
- mea_size = (sizeof(struct lustre_id) *
- lmv->desc.ld_tgt_count) + sizeof(struct mea);
+ mea_size = lmv_get_easize(lmv);
if (!lmmp)
RETURN(mea_size);
if (*lmmp && !lsm) {
- OBD_FREE(*lmmp, mea_size);
+ OBD_FREE_LARGE(*lmmp, mea_size);
*lmmp = NULL;
RETURN(0);
}
if (*lmmp == NULL) {
- OBD_ALLOC(*lmmp, mea_size);
+ OBD_ALLOC_LARGE(*lmmp, mea_size);
if (*lmmp == NULL)
RETURN(-ENOMEM);
}
if (!lsm)
RETURN(mea_size);
- lsmp = (struct mea *)lsm;
- meap = (struct mea *)*lmmp;
+ lsmp = (struct lmv_stripe_md *)lsm;
+ meap = (struct lmv_stripe_md *)*lmmp;
if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
meap->mea_ids[i] = meap->mea_ids[i];
- id_cpu_to_le(&meap->mea_ids[i]);
+ fid_cpu_to_le(&meap->mea_ids[i], &meap->mea_ids[i]);
}
RETURN(mea_size);
int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
struct lov_mds_md *lmm, int lmm_size)
{
- struct obd_device *obd = class_exp2obd(exp);
- struct mea **tmea = (struct mea **)lsmp;
- struct mea *mea = (struct mea *)lmm;
- struct lmv_obd *lmv = &obd->u.lmv;
- int mea_size, i, rc = 0;
- __u32 magic;
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp;
+ struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int mea_size;
+ int i;
+ __u32 magic;
ENTRY;
- mea_size = sizeof(struct lustre_id) *
- lmv->desc.ld_tgt_count + sizeof(struct mea);
-
+ mea_size = lmv_get_easize(lmv);
if (lsmp == NULL)
return mea_size;
if (*lsmp != NULL && lmm == NULL) {
- OBD_FREE(*tmea, mea_size);
+ OBD_FREE_LARGE(*tmea, mea_size);
+ *lsmp = NULL;
RETURN(0);
}
LASSERT(mea_size == lmm_size);
- OBD_ALLOC(*tmea, mea_size);
+ OBD_ALLOC_LARGE(*tmea, mea_size);
if (*tmea == NULL)
RETURN(-ENOMEM);
RETURN(mea_size);
if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
- mea->mea_magic == MEA_MAGIC_ALL_CHARS)
+ mea->mea_magic == MEA_MAGIC_ALL_CHARS ||
+ mea->mea_magic == MEA_MAGIC_HASH_SEGMENT)
{
magic = le32_to_cpu(mea->mea_magic);
} else {
- struct mea_old *old = (struct mea_old *)lmm;
-
- mea_size = sizeof(struct lustre_id) * old->mea_count +
- sizeof(struct mea_old);
-
- if (old->mea_count > 256 || old->mea_master > 256 ||
- lmm_size < mea_size || old->mea_master > old->mea_count) {
- CWARN("bad MEA: count %u, master %u, size %u\n",
- old->mea_count, old->mea_master, mea_size);
- GOTO(out_free_mea, rc = -EINVAL);
- }
- magic = MEA_MAGIC_LAST_CHAR;
+ /*
+ * Old mea is not handled here.
+ */
+ CERROR("Old not supportable EA is found\n");
+ LBUG();
}
(*tmea)->mea_magic = magic;
for (i = 0; i < (*tmea)->mea_count; i++) {
(*tmea)->mea_ids[i] = mea->mea_ids[i];
- id_le_to_cpu(&(*tmea)->mea_ids[i]);
+ fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]);
}
RETURN(mea_size);
+}
-out_free_mea:
- OBD_FREE(*tmea, mea_size);
- return rc;
+static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
+ ldlm_policy_data_t *policy, ldlm_mode_t mode,
+ ldlm_cancel_flags_t flags, void *opaque)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int rc = 0;
+ int err;
+ int i;
+ ENTRY;
+
+ LASSERT(fid != NULL);
+
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ if (!lmv->tgts[i].ltd_exp || !lmv->tgts[i].ltd_active)
+ continue;
+
+ err = md_cancel_unused(lmv->tgts[i].ltd_exp, fid,
+ policy, mode, flags, opaque);
+ if (!rc)
+ rc = err;
+ }
+ RETURN(rc);
}
-int lmv_brw(int rw, struct obd_export *exp, struct obdo *oa,
- struct lov_stripe_md *ea, obd_count oa_bufs,
- struct brw_page *pgarr, struct obd_trans_info *oti)
+int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
+ __u64 *bits)
{
- struct obd_device *obd = exp->exp_obd;
- struct lmv_obd *lmv = &obd->u.lmv;
- struct mea *mea = (struct mea *) ea;
- int err;
-
- LASSERT(oa != NULL);
- LASSERT(ea != NULL);
- LASSERT(pgarr != NULL);
- LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
-
- oa->o_gr = id_gen(&mea->mea_ids[oa->o_mds]);
- oa->o_id = id_ino(&mea->mea_ids[oa->o_mds]);
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
-
- err = obd_brw(rw, lmv->tgts[oa->o_mds].ltd_exp,
- oa, NULL, oa_bufs, pgarr, oti);
- RETURN(err);
-}
-
-static int lmv_cancel_unused(struct obd_export *exp,
- struct lov_stripe_md *lsm,
- int flags, void *opaque)
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int rc;
+ ENTRY;
+
+ rc = md_set_lock_data(lmv->tgts[0].ltd_exp, lockh, data, bits);
+ RETURN(rc);
+}
+
+ldlm_mode_t lmv_lock_match(struct obd_export *exp, int flags,
+ const struct lu_fid *fid, ldlm_type_t type,
+ ldlm_policy_data_t *policy, ldlm_mode_t mode,
+ struct lustre_handle *lockh)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ ldlm_mode_t rc;
+ int i;
+ ENTRY;
+
+ CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
+
+ /*
+ * With CMD every object can have two locks in different namespaces:
+ * lookup lock in space of mds storing direntry and update/open lock in
+ * space of mds storing inode. Thus we check all targets, not only that
+ * one fid was created in.
+ */
+ for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
+ rc = md_lock_match(lmv->tgts[i].ltd_exp, flags, fid,
+ type, policy, mode, lockh);
+ if (rc)
+ RETURN(rc);
+ }
+
+ RETURN(0);
+}
+
+int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
+ struct obd_export *dt_exp, struct obd_export *md_exp,
+ struct lustre_md *md)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int rc;
+ ENTRY;
+ rc = md_get_lustre_md(lmv->tgts[0].ltd_exp, req, dt_exp, md_exp, md);
+ RETURN(rc);
+}
+
+int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ ENTRY;
+
+ if (md->mea)
+ obd_free_memmd(exp, (void *)&md->mea);
+ RETURN(md_free_lustre_md(lmv->tgts[0].ltd_exp, md));
+}
+
+int lmv_set_open_replay_data(struct obd_export *exp,
+ struct obd_client_handle *och,
+ struct ptlrpc_request *open_req)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ ENTRY;
+
+ tgt = lmv_find_target(lmv, &och->och_fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ RETURN(md_set_open_replay_data(tgt->ltd_exp, och, open_req));
+}
+
+int lmv_clear_open_replay_data(struct obd_export *exp,
+ struct obd_client_handle *och)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ ENTRY;
+
+ tgt = lmv_find_target(lmv, &och->och_fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
+}
+
+static int lmv_get_remote_perm(struct obd_export *exp,
+ const struct lu_fid *fid,
+ struct obd_capa *oc, __u32 suppgid,
+ struct ptlrpc_request **request)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
+ ENTRY;
+
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
+
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_get_remote_perm(tgt->ltd_exp, fid, oc, suppgid, request);
+ RETURN(rc);
+}
+
+static int lmv_renew_capa(struct obd_export *exp, struct obd_capa *oc,
+ renew_capa_cb_t cb)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
+ ENTRY;
+
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
+
+ tgt = lmv_find_target(lmv, &oc->c_capa.lc_fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_renew_capa(tgt->ltd_exp, oc, cb);
+ RETURN(rc);
+}
+
+int lmv_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
+ const struct req_msg_field *field, struct obd_capa **oc)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
- int rc = 0, err, i;
+ int rc;
+
+ ENTRY;
+ rc = md_unpack_capa(lmv->tgts[0].ltd_exp, req, field, oc);
+ RETURN(rc);
+}
+
+int lmv_intent_getattr_async(struct obd_export *exp,
+ struct md_enqueue_info *minfo,
+ struct ldlm_enqueue_info *einfo)
+{
+ struct md_op_data *op_data = &minfo->mi_data;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_object *obj;
+ struct lmv_tgt_desc *tgt = NULL;
+ int rc;
+ int sidx;
ENTRY;
- LASSERT(lsm == NULL);
-
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
+
+ if (op_data->op_namelen) {
+ obj = lmv_object_find(obd, &op_data->op_fid1);
+ if (obj) {
+ sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
+ (char *)op_data->op_name,
+ op_data->op_namelen);
+ op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
+ tgt = lmv_get_target(lmv, obj->lo_stripes[sidx].ls_mds);
+ lmv_object_put(obj);
+ }
+ }
+
+ if (tgt == NULL)
+ tgt = lmv_find_target(lmv, &op_data->op_fid1);
+
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_intent_getattr_async(tgt->ltd_exp, minfo, einfo);
+ RETURN(rc);
+}
+
+int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
+ struct lu_fid *fid, __u64 *bits)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int rc;
+ ENTRY;
+
+ rc = lmv_check_connect(obd);
+ if (rc)
+ RETURN(rc);
+
+ tgt = lmv_find_target(lmv, fid);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
+ RETURN(rc);
+}
+
+/**
+ * For lmv, only need to send request to master MDT, and the master MDT will
+ * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
+ * we directly fetch data from the slave MDTs.
+ */
+int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
+ struct obd_quotactl *oqctl)
+{
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt = &lmv->tgts[0];
+ int rc = 0, i;
+ __u64 curspace, curinodes;
+ ENTRY;
+
+ if (!lmv->desc.ld_tgt_count || !tgt->ltd_active) {
+ CERROR("master lmv inactive\n");
+ RETURN(-EIO);
+ }
+
+ if (oqctl->qc_cmd != Q_GETOQUOTA) {
+ rc = obd_quotactl(tgt->ltd_exp, oqctl);
+ RETURN(rc);
+ }
+
+ curspace = curinodes = 0;
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
- if (!lmv->tgts[i].ltd_exp || !lmv->tgts[i].active)
+ int err;
+ tgt = &lmv->tgts[i];
+
+ if (tgt->ltd_exp == NULL)
continue;
-
- err = obd_cancel_unused(lmv->tgts[i].ltd_exp,
- NULL, flags, opaque);
- if (!rc)
+ if (!tgt->ltd_active) {
+ CDEBUG(D_HA, "mdt %d is inactive.\n", i);
+ continue;
+ }
+
+ err = obd_quotactl(tgt->ltd_exp, oqctl);
+ if (err) {
+ CERROR("getquota on mdt %d failed. %d\n", i, err);
+ if (!rc)
+ rc = err;
+ } else {
+ curspace += oqctl->qc_dqblk.dqb_curspace;
+ curinodes += oqctl->qc_dqblk.dqb_curinodes;
+ }
+ }
+ oqctl->qc_dqblk.dqb_curspace = curspace;
+ oqctl->qc_dqblk.dqb_curinodes = curinodes;
+
+ RETURN(rc);
+}
+
+int lmv_quotacheck(struct obd_device *unused, struct obd_export *exp,
+ struct obd_quotactl *oqctl)
+{
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct lmv_tgt_desc *tgt;
+ int i, rc = 0;
+ ENTRY;
+
+ for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
+ int err;
+
+ if (!tgt->ltd_active) {
+ CERROR("lmv idx %d inactive\n", i);
+ RETURN(-EIO);
+ }
+
+ err = obd_quotacheck(tgt->ltd_exp, oqctl);
+ if (err && !rc)
rc = err;
}
+
RETURN(rc);
}
struct obd_ops lmv_obd_ops = {
.o_owner = THIS_MODULE,
- .o_attach = lmv_attach,
- .o_detach = lmv_detach,
.o_setup = lmv_setup,
.o_cleanup = lmv_cleanup,
.o_precleanup = lmv_precleanup,
.o_connect = lmv_connect,
.o_disconnect = lmv_disconnect,
.o_statfs = lmv_statfs,
- .o_llog_init = lmv_llog_init,
- .o_llog_finish = lmv_llog_finish,
.o_get_info = lmv_get_info,
- .o_set_info = lmv_set_info,
- .o_create = lmv_obd_create,
+ .o_set_info_async = lmv_set_info_async,
.o_packmd = lmv_packmd,
.o_unpackmd = lmv_unpackmd,
- .o_brw = lmv_brw,
- .o_init_ea_size = lmv_init_ea_size,
.o_notify = lmv_notify,
+ .o_get_uuid = lmv_get_uuid,
.o_iocontrol = lmv_iocontrol,
- .o_cancel_unused = lmv_cancel_unused,
+ .o_fid_delete = lmv_fid_delete,
+ .o_quotacheck = lmv_quotacheck,
+ .o_quotactl = lmv_quotactl
};
struct md_ops lmv_md_ops = {
- .m_getstatus = lmv_getstatus,
- .m_getattr = lmv_getattr,
- .m_change_cbdata = lmv_change_cbdata,
- .m_change_cbdata_name = lmv_change_cbdata_name,
- .m_close = lmv_close,
- .m_create = lmv_create,
- .m_done_writing = lmv_done_writing,
- .m_enqueue = lmv_enqueue,
- .m_getattr_lock = lmv_getattr_lock,
- .m_intent_lock = lmv_intent_lock,
- .m_link = lmv_link,
- .m_rename = lmv_rename,
- .m_setattr = lmv_setattr,
- .m_sync = lmv_sync,
- .m_readpage = lmv_readpage,
- .m_unlink = lmv_unlink,
- .m_get_real_obd = lmv_get_real_obd,
- .m_valid_attrs = lmv_valid_attrs,
- .m_delete_inode = lmv_delete_inode,
- .m_access_check = lmv_access_check,
+ .m_getstatus = lmv_getstatus,
+ .m_change_cbdata = lmv_change_cbdata,
+ .m_find_cbdata = lmv_find_cbdata,
+ .m_close = lmv_close,
+ .m_create = lmv_create,
+ .m_done_writing = lmv_done_writing,
+ .m_enqueue = lmv_enqueue,
+ .m_getattr = lmv_getattr,
+ .m_getxattr = lmv_getxattr,
+ .m_getattr_name = lmv_getattr_name,
+ .m_intent_lock = lmv_intent_lock,
+ .m_link = lmv_link,
+ .m_rename = lmv_rename,
+ .m_setattr = lmv_setattr,
+ .m_setxattr = lmv_setxattr,
+ .m_sync = lmv_sync,
+ .m_readpage = lmv_readpage,
+ .m_unlink = lmv_unlink,
+ .m_init_ea_size = lmv_init_ea_size,
+ .m_cancel_unused = lmv_cancel_unused,
+ .m_set_lock_data = lmv_set_lock_data,
+ .m_lock_match = lmv_lock_match,
+ .m_get_lustre_md = lmv_get_lustre_md,
+ .m_free_lustre_md = lmv_free_lustre_md,
+ .m_set_open_replay_data = lmv_set_open_replay_data,
+ .m_clear_open_replay_data = lmv_clear_open_replay_data,
+ .m_renew_capa = lmv_renew_capa,
+ .m_unpack_capa = lmv_unpack_capa,
+ .m_get_remote_perm = lmv_get_remote_perm,
+ .m_intent_getattr_async = lmv_intent_getattr_async,
+ .m_revalidate_lock = lmv_revalidate_lock
};
int __init lmv_init(void)
{
struct lprocfs_static_vars lvars;
- int rc;
+ int rc;
- obj_cache = kmem_cache_create("lmv_objects",
- sizeof(struct lmv_obj),
- 0, 0, NULL, NULL);
- if (!obj_cache) {
- CERROR("error allocating lmv objects cache\n");
+ lmv_object_cache = cfs_mem_cache_create("lmv_objects",
+ sizeof(struct lmv_object),
+ 0, 0);
+ if (!lmv_object_cache) {
+ CERROR("Error allocating lmv objects cache\n");
return -ENOMEM;
}
- lprocfs_init_vars(lmv, &lvars);
+ lprocfs_lmv_init_vars(&lvars);
+
rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
- lvars.module_vars,
- OBD_LMV_DEVICENAME);
+ lvars.module_vars, LUSTRE_LMV_NAME, NULL);
if (rc)
- kmem_cache_destroy(obj_cache);
-
+ cfs_mem_cache_destroy(lmv_object_cache);
+
return rc;
}
#ifdef __KERNEL__
static void lmv_exit(void)
{
- class_unregister_type(OBD_LMV_DEVICENAME);
+ class_unregister_type(LUSTRE_LMV_NAME);
- LASSERTF(kmem_cache_destroy(obj_cache) == 0,
- "can't free lmv objects cache, %d object(s)"
- "still in use\n", atomic_read(&obj_cache_count));
+ LASSERTF(cfs_atomic_read(&lmv_object_count) == 0,
+ "Can't free lmv objects cache, %d object(s) busy\n",
+ cfs_atomic_read(&lmv_object_count));
+ cfs_mem_cache_destroy(lmv_object_cache);
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
MODULE_LICENSE("GPL");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff