* 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 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 COPYING file that accompanied this code.
-
+ *
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* lustre/lod/lod_lov.c
*
- * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
+ * A set of helpers to maintain Logical Object Volume (LOV)
+ * Extended Attribute (EA) and known OST targets
+ *
+ * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
#include <obd_class.h>
-#include <obd_lov.h>
+#include <lustre_lfsck.h>
+#include <lustre_lmv.h>
+#include <lustre_swab.h>
#include "lod_internal.h"
-/*
- * Keep a refcount of lod->ltd_tgts usage to prevent racing with
- * addition/deletion. Any function that expects lov_tgts to remain stationary
- * must take a ref.
+/**
+ * Increase reference count on the target table.
*
- * \param lod - is the lod device from which we want to grab a reference
+ * Increase reference count on the target table usage to prevent racing with
+ * addition/deletion. Any function that expects the table to remain
+ * stationary must take a ref.
+ *
+ * \param[in] ltd target table (lod_ost_descs or lod_mdt_descs)
*/
void lod_getref(struct lod_tgt_descs *ltd)
{
mutex_unlock(<d->ltd_mutex);
}
-/*
- * Companion of lod_getref() to release a reference on the lod table.
- * If this is the last reference and the ost entry was scheduled for deletion,
- * the descriptor is removed from the array.
+/**
+ * Decrease reference count on the target table.
+ *
+ * Companion of lod_getref() to release a reference on the target table.
+ * If this is the last reference and the OST entry was scheduled for deletion,
+ * the descriptor is removed from the table.
*
- * \param lod - is the lod device from which we release a reference
+ * \param[in] lod LOD device from which we release a reference
+ * \param[in] ltd target table (lod_ost_descs or lod_mdt_descs)
*/
void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd)
{
ltd->ltd_refcount--;
if (ltd->ltd_refcount == 0 && ltd->ltd_death_row) {
struct lod_tgt_desc *tgt_desc, *tmp;
- int idx;
- CFS_LIST_HEAD(kill);
+ struct list_head kill;
+ unsigned int idx;
CDEBUG(D_CONFIG, "destroying %d ltd desc\n",
ltd->ltd_death_row);
+ INIT_LIST_HEAD(&kill);
+
cfs_foreach_bit(ltd->ltd_tgt_bitmap, idx) {
tgt_desc = LTD_TGT(ltd, idx);
LASSERT(tgt_desc);
if (!tgt_desc->ltd_reap)
continue;
- cfs_list_add(&tgt_desc->ltd_kill, &kill);
+ list_add(&tgt_desc->ltd_kill, &kill);
LTD_TGT(ltd, idx) = NULL;
/*FIXME: only support ost pool for now */
if (ltd == &lod->lod_ost_descs) {
mutex_unlock(<d->ltd_mutex);
up_read(<d->ltd_rw_sem);
- cfs_list_for_each_entry_safe(tgt_desc, tmp, &kill, ltd_kill) {
+ list_for_each_entry_safe(tgt_desc, tmp, &kill, ltd_kill) {
int rc;
- cfs_list_del(&tgt_desc->ltd_kill);
+ list_del(&tgt_desc->ltd_kill);
if (ltd == &lod->lod_ost_descs) {
/* remove from QoS structures */
rc = qos_del_tgt(lod, tgt_desc);
}
}
+/**
+ * Expand size of target table.
+ *
+ * When the target table is full, we have to extend the table. To do so,
+ * we allocate new memory with some reserve, move data from the old table
+ * to the new one and release memory consumed by the old table.
+ * Notice we take ltd_rw_sem exclusively to ensure atomic switch.
+ *
+ * \param[in] ltd target table
+ * \param[in] newsize new size of the table
+ *
+ * \retval 0 on success
+ * \retval -ENOMEM if reallocation failed
+ */
static int ltd_bitmap_resize(struct lod_tgt_descs *ltd, __u32 newsize)
{
- cfs_bitmap_t *new_bitmap, *old_bitmap = NULL;
+ struct cfs_bitmap *new_bitmap, *old_bitmap = NULL;
int rc = 0;
ENTRY;
return rc;
}
-/*
- * Connect LOD to a new OSP and add it to the device table.
- *
- * \param env - is the environment passed by the caller
- * \param lod - is the LOD device to be connected to the new OSP
- * \param osp - is the name of OSP device name about to be added
- * \param index - is the OSP index
- * \param gen - is the generation number
- * \param tgt_index - is the group of the OSP.
- * \param type - is the type of device (mdc or osc)
+/**
+ * Connect LOD to a new OSP and add it to the target table.
+ *
+ * Connect to the OSP device passed, initialize all the internal
+ * structures related to the device and add it to the target table.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lod LOD device to be connected to the new OSP
+ * \param[in] osp name of OSP device name to be added
+ * \param[in] index index of the new target
+ * \param[in] gen target's generation number
+ * \param[in] tgt_index OSP's group
+ * \param[in] type type of device (mdc or osc)
+ * \param[in] active state of OSP: 0 - inactive, 1 - active
+ *
+ * \retval 0 if added successfully
+ * \retval negative error number on failure
*/
int lod_add_device(const struct lu_env *env, struct lod_device *lod,
char *osp, unsigned index, unsigned gen, int tgt_index,
struct obd_connect_data *data = NULL;
struct obd_export *exp = NULL;
struct obd_device *obd;
- struct lu_device *ldev;
- struct dt_device *d;
+ struct lu_device *lu_dev;
+ struct dt_device *dt_dev;
int rc;
struct lod_tgt_desc *tgt_desc;
struct lod_tgt_descs *ltd;
+ struct lustre_cfg *lcfg;
struct obd_uuid obd_uuid;
+ bool for_ost;
+ bool lock = false;
+ bool connected = false;
ENTRY;
CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, index, gen);
RETURN(-EINVAL);
}
+ LASSERT(obd->obd_lu_dev != NULL);
+ LASSERT(obd->obd_lu_dev->ld_site == lod->lod_dt_dev.dd_lu_dev.ld_site);
+
+ lu_dev = obd->obd_lu_dev;
+ dt_dev = lu2dt_dev(lu_dev);
+
OBD_ALLOC_PTR(data);
if (data == NULL)
- RETURN(-ENOMEM);
+ GOTO(out_cleanup, rc = -ENOMEM);
data->ocd_connect_flags = OBD_CONNECT_INDEX | OBD_CONNECT_VERSION;
data->ocd_version = LUSTRE_VERSION_CODE;
data->ocd_index = index;
if (strcmp(LUSTRE_OSC_NAME, type) == 0) {
+ for_ost = true;
data->ocd_connect_flags |= OBD_CONNECT_AT |
OBD_CONNECT_FULL20 |
OBD_CONNECT_INDEX |
OBD_CONNECT_LRU_RESIZE |
#endif
OBD_CONNECT_MDS |
- OBD_CONNECT_OSS_CAPA |
OBD_CONNECT_REQPORTAL |
OBD_CONNECT_SKIP_ORPHAN |
OBD_CONNECT_FID |
OBD_CONNECT_LVB_TYPE |
- OBD_CONNECT_VERSION;
+ OBD_CONNECT_VERSION |
+ OBD_CONNECT_PINGLESS |
+ OBD_CONNECT_LFSCK |
+ OBD_CONNECT_BULK_MBITS;
data->ocd_group = tgt_index;
ltd = &lod->lod_ost_descs;
} else {
struct obd_import *imp = obd->u.cli.cl_import;
+ for_ost = false;
data->ocd_ibits_known = MDS_INODELOCK_UPDATE;
data->ocd_connect_flags |= OBD_CONNECT_ACL |
- OBD_CONNECT_MDS_CAPA |
- OBD_CONNECT_OSS_CAPA |
OBD_CONNECT_IBITS |
OBD_CONNECT_MDS_MDS |
OBD_CONNECT_FID |
OBD_CONNECT_AT |
- OBD_CONNECT_FULL20;
- /* XXX set MDS-MDS flags, remove this when running this
- * on client*/
- data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS;
+ OBD_CONNECT_FULL20 |
+ OBD_CONNECT_LFSCK |
+ OBD_CONNECT_BULK_MBITS;
spin_lock(&imp->imp_lock);
imp->imp_server_timeout = 1;
spin_unlock(&imp->imp_lock);
- imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
+ imp->imp_client->cli_request_portal = OUT_PORTAL;
CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
obd->obd_name);
ltd = &lod->lod_mdt_descs;
if (rc) {
CERROR("%s: cannot connect to next dev %s (%d)\n",
obd->obd_name, osp, rc);
- GOTO(out_free, rc);
+ GOTO(out_cleanup, rc);
}
-
- LASSERT(obd->obd_lu_dev);
- LASSERT(obd->obd_lu_dev->ld_site = lod->lod_dt_dev.dd_lu_dev.ld_site);
-
- ldev = obd->obd_lu_dev;
- d = lu2dt_dev(ldev);
+ connected = true;
/* Allocate ost descriptor and fill it */
OBD_ALLOC_PTR(tgt_desc);
if (!tgt_desc)
- GOTO(out_conn, rc = -ENOMEM);
+ GOTO(out_cleanup, rc = -ENOMEM);
- tgt_desc->ltd_tgt = d;
+ tgt_desc->ltd_tgt = dt_dev;
tgt_desc->ltd_exp = exp;
tgt_desc->ltd_uuid = obd->u.cli.cl_target_uuid;
tgt_desc->ltd_gen = gen;
}
mutex_lock(<d->ltd_mutex);
+ lock = true;
if (cfs_bitmap_check(ltd->ltd_tgt_bitmap, index)) {
CERROR("%s: device %d is registered already\n", obd->obd_name,
index);
}
}
- if (!strcmp(LUSTRE_OSC_NAME, type)) {
+ if (for_ost) {
/* pool and qos are not supported for MDS stack yet */
rc = lod_ost_pool_add(&lod->lod_pool_info, index,
lod->lod_osts_size);
ltd->ltd_tgtnr++;
mutex_unlock(<d->ltd_mutex);
lod_putref(lod, ltd);
+ lock = false;
if (lod->lod_recovery_completed)
- ldev->ld_ops->ldo_recovery_complete(env, ldev);
+ lu_dev->ld_ops->ldo_recovery_complete(env, lu_dev);
+
+ if (!for_ost && lod->lod_initialized) {
+ rc = lod_sub_init_llog(env, lod, tgt_desc->ltd_tgt);
+ if (rc != 0) {
+ CERROR("%s: cannot start llog on %s:rc = %d\n",
+ lod2obd(lod)->obd_name, osp, rc);
+ GOTO(out_ltd, rc);
+ }
+ }
- RETURN(0);
+ rc = lfsck_add_target(env, lod->lod_child, dt_dev, exp, index, for_ost);
+ if (rc != 0) {
+ CERROR("Fail to add LFSCK target: name = %s, type = %s, "
+ "index = %u, rc = %d\n", osp, type, index, rc);
+ GOTO(out_fini_llog, rc);
+ }
+ RETURN(rc);
+out_fini_llog:
+ lod_sub_fini_llog(env, tgt_desc->ltd_tgt,
+ tgt_desc->ltd_recovery_thread);
+out_ltd:
+ lod_getref(ltd);
+ mutex_lock(<d->ltd_mutex);
+ lock = true;
+ if (!for_ost && LTD_TGT(ltd, index)->ltd_recovery_thread != NULL) {
+ struct ptlrpc_thread *thread;
+ thread = LTD_TGT(ltd, index)->ltd_recovery_thread;
+ OBD_FREE_PTR(thread);
+ }
+ ltd->ltd_tgtnr--;
+ cfs_bitmap_clear(ltd->ltd_tgt_bitmap, index);
+ LTD_TGT(ltd, index) = NULL;
out_pool:
lod_ost_pool_remove(&lod->lod_pool_info, index);
out_mutex:
- mutex_unlock(<d->ltd_mutex);
- lod_putref(lod, ltd);
+ if (lock) {
+ mutex_unlock(<d->ltd_mutex);
+ lod_putref(lod, ltd);
+ }
out_desc:
OBD_FREE_PTR(tgt_desc);
-out_conn:
- obd_disconnect(exp);
-out_free:
+out_cleanup:
+ /* XXX OSP needs us to send down LCFG_CLEANUP because it uses
+ * objects from the MDT stack. See LU-7184. */
+ lcfg = &lod_env_info(env)->lti_lustre_cfg;
+ memset(lcfg, 0, sizeof(*lcfg));
+ lcfg->lcfg_version = LUSTRE_CFG_VERSION;
+ lcfg->lcfg_command = LCFG_CLEANUP;
+ lu_dev->ld_ops->ldo_process_config(env, lu_dev, lcfg);
+
+ if (connected)
+ obd_disconnect(exp);
+
return rc;
}
-/*
- * helper function to schedule OST removal from the device table
+/**
+ * Schedule target removal from the target table.
+ *
+ * Mark the device as dead. The device is not removed here because it may
+ * still be in use. The device will be removed in lod_putref() when the
+ * last reference is released.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lod LOD device the target table belongs to
+ * \param[in] ltd target table
+ * \param[in] idx index of the target
+ * \param[in] for_ost type of the target: 0 - MDT, 1 - OST
*/
-static void __lod_del_device(struct lod_tgt_descs *ltd,
- unsigned idx)
+static void __lod_del_device(const struct lu_env *env, struct lod_device *lod,
+ struct lod_tgt_descs *ltd, unsigned idx,
+ bool for_ost)
{
LASSERT(LTD_TGT(ltd, idx));
+
+ lfsck_del_target(env, lod->lod_child, LTD_TGT(ltd, idx)->ltd_tgt,
+ idx, for_ost);
+
+ if (!for_ost && LTD_TGT(ltd, idx)->ltd_recovery_thread != NULL) {
+ struct ptlrpc_thread *thread;
+
+ thread = LTD_TGT(ltd, idx)->ltd_recovery_thread;
+ OBD_FREE_PTR(thread);
+ }
+
if (LTD_TGT(ltd, idx)->ltd_reap == 0) {
LTD_TGT(ltd, idx)->ltd_reap = 1;
ltd->ltd_death_row++;
}
}
-int lod_fini_tgt(struct lod_device *lod, struct lod_tgt_descs *ltd)
+/**
+ * Schedule removal of all the targets from the given target table.
+ *
+ * See more details in the description for __lod_del_device()
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lod LOD device the target table belongs to
+ * \param[in] ltd target table
+ * \param[in] for_ost type of the target: MDT or OST
+ *
+ * \retval 0 always
+ */
+int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
+ struct lod_tgt_descs *ltd, bool for_ost)
{
- int idx;
+ unsigned int idx;
if (ltd->ltd_tgts_size <= 0)
return 0;
lod_getref(ltd);
mutex_lock(<d->ltd_mutex);
cfs_foreach_bit(ltd->ltd_tgt_bitmap, idx)
- __lod_del_device(ltd, idx);
+ __lod_del_device(env, lod, ltd, idx, for_ost);
mutex_unlock(<d->ltd_mutex);
lod_putref(lod, ltd);
CFS_FREE_BITMAP(ltd->ltd_tgt_bitmap);
return 0;
}
-/*
- * Add support for administratively disabled OST (through the MGS).
- * Schedule a target for deletion. Disconnection and real removal from the
- * table takes place in lod_putref() once the last table user release its
- * reference.
- *
- * \param env - is the environment passed by the caller
- * \param lod - is the lod device currently connected to the OSP about to be
- * removed
- * \param osp - is the name of OSP device about to be removed
- * \param idx - is the OSP index
- * \param gen - is the generation number, not used currently
+/**
+ * Remove device by name.
+ *
+ * Remove a device identified by \a osp from the target table. Given
+ * the device can be in use, the real deletion happens in lod_putref().
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lod LOD device to be connected to the new OSP
+ * \param[in] ltd target table
+ * \param[in] osp name of OSP device to be removed
+ * \param[in] idx index of the target
+ * \param[in] gen generation number, not used currently
+ * \param[in] for_ost type of the target: 0 - MDT, 1 - OST
+ *
+ * \retval 0 if the device was scheduled for removal
+ * \retval -EINVAL if no device was found
*/
int lod_del_device(const struct lu_env *env, struct lod_device *lod,
struct lod_tgt_descs *ltd, char *osp, unsigned idx,
- unsigned gen)
+ unsigned gen, bool for_ost)
{
struct obd_device *obd;
int rc = 0;
GOTO(out, rc = -EINVAL);
}
- __lod_del_device(ltd, idx);
+ __lod_del_device(env, lod, ltd, idx, for_ost);
EXIT;
out:
mutex_unlock(<d->ltd_mutex);
return(rc);
}
-int lod_ea_store_resize(struct lod_thread_info *info, int size)
+/**
+ * Resize per-thread storage to hold specified size.
+ *
+ * A helper function to resize per-thread temporary storage. This storage
+ * is used to process LOV/LVM EAs and may be quite large. We do not want to
+ * allocate/release it every time, so instead we put it into the env and
+ * reallocate on demand. The memory is released when the correspondent thread
+ * is finished.
+ *
+ * \param[in] info LOD-specific storage in the environment
+ * \param[in] size new size to grow the buffer to
+
+ * \retval 0 on success, -ENOMEM if reallocation failed
+ */
+int lod_ea_store_resize(struct lod_thread_info *info, size_t size)
{
- int round = size_roundup_power2(size);
+ __u32 round = size_roundup_power2(size);
- LASSERT(round <= lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
+ LASSERT(round <=
+ lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
if (info->lti_ea_store) {
LASSERT(info->lti_ea_store_size);
LASSERT(info->lti_ea_store_size < round);
if (info->lti_ea_store == NULL)
RETURN(-ENOMEM);
info->lti_ea_store_size = round;
+
RETURN(0);
}
-/*
- * generate and write LOV EA for given striped object
+static void lod_free_comp_buffer(struct lod_layout_component *entries,
+ __u16 count, __u32 bufsize)
+{
+ struct lod_layout_component *entry;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ entry = &entries[i];
+ if (entry->llc_pool != NULL)
+ lod_set_pool(&entry->llc_pool, NULL);
+ if (entry->llc_ostlist.op_array)
+ OBD_FREE(entry->llc_ostlist.op_array,
+ entry->llc_ostlist.op_size);
+ LASSERT(entry->llc_stripe == NULL);
+ LASSERT(entry->llc_stripes_allocated == 0);
+ }
+
+ if (bufsize != 0)
+ OBD_FREE_LARGE(entries, bufsize);
+}
+
+void lod_free_def_comp_entries(struct lod_default_striping *lds)
+{
+ lod_free_comp_buffer(lds->lds_def_comp_entries,
+ lds->lds_def_comp_size_cnt,
+ size_roundup_power2(
+ sizeof(*lds->lds_def_comp_entries) *
+ lds->lds_def_comp_size_cnt));
+ lds->lds_def_comp_entries = NULL;
+ lds->lds_def_comp_cnt = 0;
+ lds->lds_def_striping_is_composite = 0;
+ lds->lds_def_comp_size_cnt = 0;
+}
+
+/**
+ * Resize per-thread storage to hold default striping component entries
+ *
+ * A helper function to resize per-thread temporary storage. This storage
+ * is used to hold default LOV/LVM EAs and may be quite large. We do not want
+ * to allocate/release it every time, so instead we put it into the env and
+ * reallocate it on demand. The memory is released when the correspondent
+ * thread is finished.
+ *
+ * \param[in,out] lds default striping
+ * \param[in] count new component count to grow the buffer to
+
+ * \retval 0 on success, -ENOMEM if reallocation failed
+ */
+int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count)
+{
+ struct lod_layout_component *entries;
+ __u32 new = size_roundup_power2(sizeof(*lds->lds_def_comp_entries) *
+ count);
+ __u32 old = size_roundup_power2(sizeof(*lds->lds_def_comp_entries) *
+ lds->lds_def_comp_size_cnt);
+
+ if (new <= old)
+ return 0;
+
+ OBD_ALLOC_LARGE(entries, new);
+ if (entries == NULL)
+ return -ENOMEM;
+
+ if (lds->lds_def_comp_entries != NULL) {
+ CDEBUG(D_INFO, "default striping component size %d is not "
+ "enough, need %d\n", old, new);
+ lod_free_def_comp_entries(lds);
+ }
+
+ lds->lds_def_comp_entries = entries;
+ lds->lds_def_comp_size_cnt = count;
+
+ RETURN(0);
+}
+
+void lod_free_comp_entries(struct lod_object *lo)
+{
+ if (lo->ldo_mirrors) {
+ OBD_FREE(lo->ldo_mirrors,
+ sizeof(*lo->ldo_mirrors) * lo->ldo_mirror_count);
+ lo->ldo_mirrors = NULL;
+ lo->ldo_mirror_count = 0;
+ }
+ lod_free_comp_buffer(lo->ldo_comp_entries,
+ lo->ldo_comp_cnt,
+ sizeof(*lo->ldo_comp_entries) * lo->ldo_comp_cnt);
+ lo->ldo_comp_entries = NULL;
+ lo->ldo_comp_cnt = 0;
+ lo->ldo_is_composite = 0;
+}
+
+int lod_alloc_comp_entries(struct lod_object *lo,
+ int mirror_count, int comp_count)
+{
+ LASSERT(comp_count != 0);
+ LASSERT(lo->ldo_comp_cnt == 0 && lo->ldo_comp_entries == NULL);
+
+ if (mirror_count > 0) {
+ OBD_ALLOC(lo->ldo_mirrors,
+ sizeof(*lo->ldo_mirrors) * mirror_count);
+ if (!lo->ldo_mirrors)
+ return -ENOMEM;
+
+ lo->ldo_mirror_count = mirror_count;
+ }
+
+ OBD_ALLOC_LARGE(lo->ldo_comp_entries,
+ sizeof(*lo->ldo_comp_entries) * comp_count);
+ if (lo->ldo_comp_entries == NULL) {
+ OBD_FREE(lo->ldo_mirrors,
+ sizeof(*lo->ldo_mirrors) * mirror_count);
+ lo->ldo_mirror_count = 0;
+ return -ENOMEM;
+ }
+
+ lo->ldo_comp_cnt = comp_count;
+ return 0;
+}
+
+int lod_fill_mirrors(struct lod_object *lo)
+{
+ struct lod_layout_component *lod_comp;
+ int mirror_idx = -1;
+ __u16 mirror_id = 0xffff;
+ int i;
+ ENTRY;
+
+ LASSERT(equi(!lo->ldo_is_composite, lo->ldo_mirror_count == 0));
+
+ if (!lo->ldo_is_composite)
+ RETURN(0);
+
+ lod_comp = &lo->ldo_comp_entries[0];
+ for (i = 0; i < lo->ldo_comp_cnt; i++, lod_comp++) {
+ int stale = !!(lod_comp->llc_flags & LCME_FL_STALE);
+ int preferred = !!(lod_comp->llc_flags & LCME_FL_PREF_WR);
+
+ if (mirror_id_of(lod_comp->llc_id) == mirror_id) {
+ lo->ldo_mirrors[mirror_idx].lme_stale |= stale;
+ lo->ldo_mirrors[mirror_idx].lme_primary |= preferred;
+ lo->ldo_mirrors[mirror_idx].lme_end = i;
+ continue;
+ }
+
+ /* new mirror */
+ ++mirror_idx;
+ if (mirror_idx >= lo->ldo_mirror_count)
+ RETURN(-EINVAL);
+
+ mirror_id = mirror_id_of(lod_comp->llc_id);
+
+ lo->ldo_mirrors[mirror_idx].lme_id = mirror_id;
+ lo->ldo_mirrors[mirror_idx].lme_stale = stale;
+ lo->ldo_mirrors[mirror_idx].lme_primary = preferred;
+ lo->ldo_mirrors[mirror_idx].lme_start = i;
+ lo->ldo_mirrors[mirror_idx].lme_end = i;
+ }
+ if (mirror_idx != lo->ldo_mirror_count - 1)
+ RETURN(-EINVAL);
+
+ RETURN(0);
+}
+
+/**
+ * Generate on-disk lov_mds_md structure for each layout component based on
+ * the information in lod_object->ldo_comp_entries[i].
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[in] comp_idx index of ldo_comp_entries
+ * \param[in] lmm buffer to cotain the on-disk lov_mds_md
+ * \param[in|out] lmm_size buffer size/lmm size
+ * \param[in] is_dir generate lov ea for dir or file? For dir case,
+ * the stripe info is from the default stripe
+ * template, which is collected in lod_ah_init(),
+ * either from parent object or root object; for
+ * file case, it's from the @lo object
+ *
+ * \retval 0 if on disk structure is created successfully
+ * \retval negative error number on failure
*/
-int lod_generate_and_set_lovea(const struct lu_env *env,
- struct lod_object *lo, struct thandle *th)
+static int lod_gen_component_ea(const struct lu_env *env,
+ struct lod_object *lo, int comp_idx,
+ struct lov_mds_md *lmm, int *lmm_size,
+ bool is_dir)
{
struct lod_thread_info *info = lod_env_info(env);
- struct dt_object *next = dt_object_child(&lo->ldo_obj);
const struct lu_fid *fid = lu_object_fid(&lo->ldo_obj.do_lu);
- struct lov_mds_md_v1 *lmm;
+ struct lod_device *lod;
struct lov_ost_data_v1 *objs;
- __u32 magic;
- int i, rc, lmm_size;
+ struct lod_layout_component *lod_comp;
+ __u32 magic;
+ __u16 stripe_count;
+ int i, rc = 0;
ENTRY;
LASSERT(lo);
- LASSERT(lo->ldo_stripenr > 0);
+ if (is_dir)
+ lod_comp =
+ &lo->ldo_def_striping->lds_def_comp_entries[comp_idx];
+ else
+ lod_comp = &lo->ldo_comp_entries[comp_idx];
- magic = lo->ldo_pool ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
- lmm_size = lov_mds_md_size(lo->ldo_stripenr, magic);
- if (info->lti_ea_store_size < lmm_size) {
- rc = lod_ea_store_resize(info, lmm_size);
- if (rc)
- RETURN(rc);
- }
-
- lmm = info->lti_ea_store;
+ magic = lod_comp->llc_pool != NULL ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
+ if (lod_comp->llc_pattern == 0) /* default striping */
+ lod_comp->llc_pattern = LOV_PATTERN_RAID0;
lmm->lmm_magic = cpu_to_le32(magic);
- lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
- lmm->lmm_object_id = cpu_to_le64(fid_ver_oid(fid));
- lmm->lmm_object_seq = cpu_to_le64(fid_seq(fid));
- lmm->lmm_stripe_size = cpu_to_le32(lo->ldo_stripe_size);
- lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_stripenr);
- lmm->lmm_layout_gen = 0;
+ lmm->lmm_pattern = cpu_to_le32(lod_comp->llc_pattern);
+ fid_to_lmm_oi(fid, &lmm->lmm_oi);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_LMMOI))
+ lmm->lmm_oi.oi.oi_id++;
+ lmm_oi_cpu_to_le(&lmm->lmm_oi, &lmm->lmm_oi);
+
+ lmm->lmm_stripe_size = cpu_to_le32(lod_comp->llc_stripe_size);
+ lmm->lmm_stripe_count = cpu_to_le16(lod_comp->llc_stripe_count);
+ /**
+ * for dir and uninstantiated component, lmm_layout_gen stores
+ * default stripe offset.
+ */
+ lmm->lmm_layout_gen =
+ (is_dir || !lod_comp_inited(lod_comp)) ?
+ cpu_to_le16(lod_comp->llc_stripe_offset) :
+ cpu_to_le16(lod_comp->llc_layout_gen);
+
if (magic == LOV_MAGIC_V1) {
objs = &lmm->lmm_objects[0];
} else {
- struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *) lmm;
- strncpy(v3->lmm_pool_name, lo->ldo_pool, LOV_MAXPOOLNAME);
+ struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *)lmm;
+ size_t cplen = strlcpy(v3->lmm_pool_name,
+ lod_comp->llc_pool,
+ sizeof(v3->lmm_pool_name));
+ if (cplen >= sizeof(v3->lmm_pool_name))
+ RETURN(-E2BIG);
objs = &v3->lmm_objects[0];
}
+ stripe_count = lod_comp_entry_stripe_count(lo, lod_comp, is_dir);
+ if (stripe_count == 0 && !is_dir &&
+ !(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
+ !(lod_comp->llc_pattern & LOV_PATTERN_MDT))
+ RETURN(-E2BIG);
+
+ if (!is_dir && lo->ldo_is_composite)
+ lod_comp_shrink_stripe_count(lod_comp, &stripe_count);
+
+ if (is_dir || lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
+ GOTO(done, rc = 0);
+
+ /* generate ost_idx of this component stripe */
+ lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ for (i = 0; i < stripe_count; i++) {
+ struct dt_object *object;
+ __u32 ost_idx = (__u32)-1UL;
+ int type = LU_SEQ_RANGE_OST;
+
+ if (lod_comp->llc_stripe && lod_comp->llc_stripe[i]) {
+ object = lod_comp->llc_stripe[i];
+ /* instantiated component */
+ info->lti_fid = *lu_object_fid(&object->do_lu);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MULTIPLE_REF) &&
+ comp_idx == 0) {
+ if (cfs_fail_val == 0)
+ cfs_fail_val = info->lti_fid.f_oid;
+ else if (i == 0)
+ info->lti_fid.f_oid = cfs_fail_val;
+ }
- for (i = 0; i < lo->ldo_stripenr; i++) {
- const struct lu_fid *fid;
- struct lod_device *lod;
- __u32 index;
+ rc = fid_to_ostid(&info->lti_fid, &info->lti_ostid);
+ LASSERT(rc == 0);
- lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
- LASSERT(lo->ldo_stripe[i]);
- fid = lu_object_fid(&lo->ldo_stripe[i]->do_lu);
+ ostid_cpu_to_le(&info->lti_ostid, &objs[i].l_ost_oi);
+ objs[i].l_ost_gen = cpu_to_le32(0);
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FLD_LOOKUP))
+ rc = -ENOENT;
+ else
+ rc = lod_fld_lookup(env, lod, &info->lti_fid,
+ &ost_idx, &type);
+ if (rc < 0) {
+ CERROR("%s: Can not locate "DFID": rc = %d\n",
+ lod2obd(lod)->obd_name,
+ PFID(&info->lti_fid), rc);
+ RETURN(rc);
+ }
+ } else if (lod_comp->llc_ostlist.op_array &&
+ lod_comp->llc_ostlist.op_count) {
+ /* user specified ost list */
+ ost_idx = lod_comp->llc_ostlist.op_array[i];
+ }
+ /*
+ * with un-instantiated or with no specified ost list
+ * component, its l_ost_idx does not matter.
+ */
+ objs[i].l_ost_idx = cpu_to_le32(ost_idx);
+ }
+done:
+ if (lmm_size != NULL)
+ *lmm_size = lov_mds_md_size(stripe_count, magic);
+ RETURN(rc);
+}
- rc = fid_ostid_pack(fid, &info->lti_ostid);
- LASSERT(rc == 0);
+/**
+ * Generate on-disk lov_mds_md structure based on the information in
+ * the lod_object->ldo_comp_entries.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[in] lmm buffer to cotain the on-disk lov_mds_md
+ * \param[in|out] lmm_size buffer size/lmm size
+ * \param[in] is_dir generate lov ea for dir or file? For dir case,
+ * the stripe info is from the default stripe
+ * template, which is collected in lod_ah_init(),
+ * either from parent object or root object; for
+ * file case, it's from the @lo object
+ *
+ * \retval 0 if on disk structure is created successfully
+ * \retval negative error number on failure
+ */
+int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
+ struct lov_mds_md *lmm, int *lmm_size, bool is_dir)
+{
+ struct lov_comp_md_entry_v1 *lcme;
+ struct lov_comp_md_v1 *lcm;
+ struct lod_layout_component *comp_entries;
+ __u16 comp_cnt, mirror_cnt;
+ bool is_composite;
+ int i, rc = 0, offset;
+ ENTRY;
- objs[i].l_object_id = cpu_to_le64(info->lti_ostid.oi_id);
- objs[i].l_object_seq = cpu_to_le64(info->lti_ostid.oi_seq);
- objs[i].l_ost_gen = cpu_to_le32(0);
- rc = lod_fld_lookup(env, lod, fid, &index, LU_SEQ_RANGE_OST);
- if (rc < 0) {
- CERROR("%s: Can not locate "DFID": rc = %d\n",
- lod2obd(lod)->obd_name, PFID(fid), rc);
- RETURN(rc);
- }
- objs[i].l_ost_idx = cpu_to_le32(index);
+ if (is_dir) {
+ comp_cnt = lo->ldo_def_striping->lds_def_comp_cnt;
+ mirror_cnt = lo->ldo_def_striping->lds_def_mirror_cnt;
+ comp_entries = lo->ldo_def_striping->lds_def_comp_entries;
+ is_composite =
+ lo->ldo_def_striping->lds_def_striping_is_composite;
+ } else {
+ comp_cnt = lo->ldo_comp_cnt;
+ mirror_cnt = lo->ldo_mirror_count;
+ comp_entries = lo->ldo_comp_entries;
+ is_composite = lo->ldo_is_composite;
+ }
+
+ LASSERT(lmm_size != NULL);
+ LASSERT(comp_cnt != 0 && comp_entries != NULL);
+
+ if (!is_composite) {
+ rc = lod_gen_component_ea(env, lo, 0, lmm, lmm_size, is_dir);
+ RETURN(rc);
}
- info->lti_buf.lb_buf = lmm;
- info->lti_buf.lb_len = lmm_size;
- rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0,
- th, BYPASS_CAPA);
+ lcm = (struct lov_comp_md_v1 *)lmm;
+ memset(lcm, 0, sizeof(*lcm));
+
+ lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
+ lcm->lcm_entry_count = cpu_to_le16(comp_cnt);
+ lcm->lcm_mirror_count = cpu_to_le16(mirror_cnt - 1);
+ lcm->lcm_flags = cpu_to_le16(lo->ldo_flr_state);
+
+ offset = sizeof(*lcm) + sizeof(*lcme) * comp_cnt;
+ LASSERT(offset % sizeof(__u64) == 0);
+
+ for (i = 0; i < comp_cnt; i++) {
+ struct lod_layout_component *lod_comp;
+ struct lov_mds_md *sub_md;
+ int size;
+
+ lod_comp = &comp_entries[i];
+ lcme = &lcm->lcm_entries[i];
+
+ LASSERT(ergo(!is_dir, lod_comp->llc_id != LCME_ID_INVAL));
+ lcme->lcme_id = cpu_to_le32(lod_comp->llc_id);
+
+ /* component could be un-inistantiated */
+ lcme->lcme_flags = cpu_to_le32(lod_comp->llc_flags);
+ if (lod_comp->llc_flags & LCME_FL_NOSYNC)
+ lcme->lcme_timestamp =
+ cpu_to_le64(lod_comp->llc_timestamp);
+ lcme->lcme_extent.e_start =
+ cpu_to_le64(lod_comp->llc_extent.e_start);
+ lcme->lcme_extent.e_end =
+ cpu_to_le64(lod_comp->llc_extent.e_end);
+ lcme->lcme_offset = cpu_to_le32(offset);
+
+ sub_md = (struct lov_mds_md *)((char *)lcm + offset);
+ rc = lod_gen_component_ea(env, lo, i, sub_md, &size, is_dir);
+ if (rc)
+ GOTO(out, rc);
+ lcme->lcme_size = cpu_to_le32(size);
+ offset += size;
+ LASSERTF((offset <= *lmm_size) && (offset % sizeof(__u64) == 0),
+ "offset:%d lmm_size:%d\n", offset, *lmm_size);
+ }
+ lcm->lcm_size = cpu_to_le32(offset);
+ lcm->lcm_layout_gen = cpu_to_le32(is_dir ? 0 : lo->ldo_layout_gen);
+ lustre_print_user_md(D_LAYOUT, (struct lov_user_md *)lmm,
+ "generate lum");
+out:
+ if (rc == 0)
+ *lmm_size = offset;
RETURN(rc);
}
-int lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
+/**
+ * Get LOV EA.
+ *
+ * Fill lti_ea_store buffer in the environment with a value for the given
+ * EA. The buffer is reallocated if the value doesn't fit.
+ *
+ * \param[in,out] env execution environment for this thread
+ * .lti_ea_store buffer is filled with EA's value
+ * \param[in] lo LOD object
+ * \param[in] name name of the EA
+ *
+ * \retval > 0 if EA is fetched successfully
+ * \retval 0 if EA is empty
+ * \retval negative error number on failure
+ */
+int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
+ const char *name)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
int rc;
ENTRY;
LASSERT(info);
- if (unlikely(info->lti_ea_store_size == 0)) {
+ if (unlikely(info->lti_ea_store == NULL)) {
/* just to enter in allocation block below */
rc = -ERANGE;
} else {
repeat:
info->lti_buf.lb_buf = info->lti_ea_store;
info->lti_buf.lb_len = info->lti_ea_store_size;
- rc = dt_xattr_get(env, next, &info->lti_buf, XATTR_NAME_LOV,
- BYPASS_CAPA);
+ rc = dt_xattr_get(env, next, &info->lti_buf, name);
}
+
/* if object is not striped or inaccessible */
- if (rc == -ENODATA)
+ if (rc == -ENODATA || rc == -ENOENT)
RETURN(0);
if (rc == -ERANGE) {
/* EA doesn't fit, reallocate new buffer */
- rc = dt_xattr_get(env, next, &LU_BUF_NULL, XATTR_NAME_LOV,
- BYPASS_CAPA);
- if (rc == -ENODATA)
+ rc = dt_xattr_get(env, next, &LU_BUF_NULL, name);
+ if (rc == -ENODATA || rc == -ENOENT)
RETURN(0);
else if (rc < 0)
RETURN(rc);
RETURN(rc);
}
-int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
- struct thandle *th)
+/**
+ * Verify the target index is present in the current configuration.
+ *
+ * \param[in] md LOD device where the target table is stored
+ * \param[in] idx target's index
+ *
+ * \retval 0 if the index is present
+ * \retval -EINVAL if not
+ */
+static int validate_lod_and_idx(struct lod_device *md, __u32 idx)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lod_object *lo = lod_dt_obj(dt);
- struct dt_object *next = dt_object_child(dt);
- struct lov_user_md_v3 *v3;
- int rc;
- ENTRY;
-
- LASSERT(S_ISDIR(dt->do_lu.lo_header->loh_attr));
-
- /*
- * store striping defaults into new directory
- * used to implement defaults inheritance
- */
-
- /* probably nothing to inherite */
- if (lo->ldo_striping_cached == 0)
- RETURN(0);
-
- if (LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size, lo->ldo_def_stripenr,
- lo->ldo_def_stripe_offset))
- RETURN(0);
-
- /* XXX: use thread info */
- OBD_ALLOC_PTR(v3);
- if (v3 == NULL)
- RETURN(-ENOMEM);
-
- v3->lmm_magic = cpu_to_le32(LOV_MAGIC_V3);
- v3->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
- v3->lmm_object_id = 0;
- v3->lmm_object_seq = 0;
- v3->lmm_stripe_size = cpu_to_le32(lo->ldo_def_stripe_size);
- v3->lmm_stripe_count = cpu_to_le16(lo->ldo_def_stripenr);
- v3->lmm_stripe_offset = cpu_to_le16(lo->ldo_def_stripe_offset);
- if (lo->ldo_pool)
- strncpy(v3->lmm_pool_name, lo->ldo_pool, LOV_MAXPOOLNAME);
+ if (unlikely(idx >= md->lod_ost_descs.ltd_tgts_size ||
+ !cfs_bitmap_check(md->lod_ost_bitmap, idx))) {
+ CERROR("%s: bad idx: %d of %d\n", lod2obd(md)->obd_name, idx,
+ md->lod_ost_descs.ltd_tgts_size);
+ return -EINVAL;
+ }
- info->lti_buf.lb_buf = v3;
- info->lti_buf.lb_len = sizeof(*v3);
- rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0, th,
- BYPASS_CAPA);
+ if (unlikely(OST_TGT(md, idx) == NULL)) {
+ CERROR("%s: bad lod_tgt_desc for idx: %d\n",
+ lod2obd(md)->obd_name, idx);
+ return -EINVAL;
+ }
- OBD_FREE_PTR(v3);
+ if (unlikely(OST_TGT(md, idx)->ltd_ost == NULL)) {
+ CERROR("%s: invalid lod device, for idx: %d\n",
+ lod2obd(md)->obd_name , idx);
+ return -EINVAL;
+ }
- RETURN(rc);
+ return 0;
}
-/*
- * allocate array of objects pointers, find/create objects
- * stripenr and other fields should be initialized by this moment
+/**
+ * Instantiate objects for stripes.
+ *
+ * Allocate and initialize LU-objects representing the stripes. The number
+ * of the stripes (ldo_stripe_count) must be initialized already. The caller
+ * must ensure nobody else is calling the function on the object at the same
+ * time. FLDB service must be running to be able to map a FID to the targets
+ * and find appropriate device representing that target.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in,out] lo LOD object
+ * \param[in] objs an array of IDs to creates the objects from
+ * \param[in] comp_idx index of ldo_comp_entries
+ *
+ * \retval 0 if the objects are instantiated successfully
+ * \retval negative error number on failure
*/
int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
- struct lov_ost_data_v1 *objs)
+ struct lov_ost_data_v1 *objs, int comp_idx)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lod_device *md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
- struct lu_object *o, *n;
- struct lu_device *nd;
- int i, idx, rc = 0;
+ struct lod_layout_component *lod_comp;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *md;
+ struct lu_object *o, *n;
+ struct lu_device *nd;
+ struct dt_object **stripe = NULL;
+ __u32 *ost_indices = NULL;
+ int stripe_len;
+ int i, rc = 0;
+ __u32 idx;
ENTRY;
- LASSERT(lo);
- LASSERT(lo->ldo_stripe == NULL);
- LASSERT(lo->ldo_stripenr > 0);
- LASSERT(lo->ldo_stripe_size > 0);
+ LASSERT(lo != NULL);
+ md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+
+ LASSERT(lo->ldo_comp_cnt != 0 && lo->ldo_comp_entries != NULL);
+ lod_comp = &lo->ldo_comp_entries[comp_idx];
+
+ LASSERT(lod_comp->llc_stripe == NULL);
+ LASSERT(lod_comp->llc_stripe_count > 0);
+ LASSERT(lod_comp->llc_stripe_size > 0);
- i = sizeof(struct dt_object *) * lo->ldo_stripenr;
- OBD_ALLOC(lo->ldo_stripe, i);
- if (lo->ldo_stripe == NULL)
+ stripe_len = lod_comp->llc_stripe_count;
+ OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_len);
+ if (stripe == NULL)
+ RETURN(-ENOMEM);
+ OBD_ALLOC(ost_indices, sizeof(*ost_indices) * stripe_len);
+ if (!ost_indices)
GOTO(out, rc = -ENOMEM);
- lo->ldo_stripes_allocated = lo->ldo_stripenr;
- for (i = 0; i < lo->ldo_stripenr; i++) {
- info->lti_ostid.oi_id = le64_to_cpu(objs[i].l_object_id);
- info->lti_ostid.oi_seq = le64_to_cpu(objs[i].l_object_seq);
- idx = le64_to_cpu(objs[i].l_ost_idx);
- fid_ostid_unpack(&info->lti_fid, &info->lti_ostid, idx);
+ for (i = 0; i < lod_comp->llc_stripe_count; i++) {
+ if (unlikely(lovea_slot_is_dummy(&objs[i])))
+ continue;
+
+ ostid_le_to_cpu(&objs[i].l_ost_oi, &info->lti_ostid);
+ idx = le32_to_cpu(objs[i].l_ost_idx);
+ rc = ostid_to_fid(&info->lti_fid, &info->lti_ostid, idx);
+ if (rc != 0)
+ GOTO(out, rc);
LASSERTF(fid_is_sane(&info->lti_fid), ""DFID" insane!\n",
PFID(&info->lti_fid));
- /*
- * XXX: assertion is left for testing, to make
- * sure we never process requests till configuration
- * is completed. to be changed to -EINVAL
- */
-
lod_getref(&md->lod_ost_descs);
- LASSERT(cfs_bitmap_check(md->lod_ost_bitmap, idx));
- LASSERT(OST_TGT(md,idx));
- LASSERTF(OST_TGT(md,idx)->ltd_ost, "idx %d\n", idx);
+
+ rc = validate_lod_and_idx(md, idx);
+ if (unlikely(rc != 0)) {
+ lod_putref(md, &md->lod_ost_descs);
+ GOTO(out, rc);
+ }
+
nd = &OST_TGT(md,idx)->ltd_ost->dd_lu_dev;
lod_putref(md, &md->lod_ost_descs);
+ /* In the function below, .hs_keycmp resolves to
+ * u_obj_hop_keycmp() */
+ /* coverity[overrun-buffer-val] */
o = lu_object_find_at(env, nd, &info->lti_fid, NULL);
if (IS_ERR(o))
GOTO(out, rc = PTR_ERR(o));
n = lu_object_locate(o->lo_header, nd->ld_type);
LASSERT(n);
- lo->ldo_stripe[i] = container_of(n, struct dt_object, do_lu);
+ stripe[i] = container_of(n, struct dt_object, do_lu);
+ ost_indices[i] = idx;
}
out:
+ if (rc != 0) {
+ for (i = 0; i < stripe_len; i++)
+ if (stripe[i] != NULL)
+ dt_object_put(env, stripe[i]);
+
+ OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
+ lod_comp->llc_stripe_count = 0;
+ if (ost_indices)
+ OBD_FREE(ost_indices,
+ sizeof(*ost_indices) * stripe_len);
+ } else {
+ lod_comp->llc_stripe = stripe;
+ lod_comp->llc_ost_indices = ost_indices;
+ lod_comp->llc_stripes_allocated = stripe_len;
+ }
+
RETURN(rc);
}
-/*
- * Parse striping information stored in lti_ea_store
+/**
+ * Instantiate objects for striping.
+ *
+ * Parse striping information in \a buf and instantiate the objects
+ * representing the stripes.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[in] buf buffer storing LOV EA to parse
+ *
+ * \retval 0 if parsing and objects creation succeed
+ * \retval negative error number on failure
*/
int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
const struct lu_buf *buf)
{
struct lov_mds_md_v1 *lmm;
+ struct lov_comp_md_v1 *comp_v1 = NULL;
struct lov_ost_data_v1 *objs;
- __u32 magic;
- int rc = 0;
+ __u32 magic, pattern;
+ int i, j, rc = 0;
+ __u16 comp_cnt;
+ __u16 mirror_cnt = 0;
ENTRY;
LASSERT(buf);
LASSERT(buf->lb_buf);
LASSERT(buf->lb_len);
+ LASSERT(mutex_is_locked(&lo->ldo_layout_mutex));
- lmm = (struct lov_mds_md_v1 *) buf->lb_buf;
+ lmm = (struct lov_mds_md_v1 *)buf->lb_buf;
magic = le32_to_cpu(lmm->lmm_magic);
- if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3)
- GOTO(out, rc = -EINVAL);
- if (le32_to_cpu(lmm->lmm_pattern) != LOV_PATTERN_RAID0)
+ if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3 &&
+ magic != LOV_MAGIC_COMP_V1)
GOTO(out, rc = -EINVAL);
- lo->ldo_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
- lo->ldo_stripenr = le16_to_cpu(lmm->lmm_stripe_count);
- lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
+ lod_free_comp_entries(lo);
+
+ if (magic == LOV_MAGIC_COMP_V1) {
+ comp_v1 = (struct lov_comp_md_v1 *)lmm;
+ comp_cnt = le16_to_cpu(comp_v1->lcm_entry_count);
+ if (comp_cnt == 0)
+ GOTO(out, rc = -EINVAL);
+ lo->ldo_layout_gen = le32_to_cpu(comp_v1->lcm_layout_gen);
+ lo->ldo_is_composite = 1;
+ lo->ldo_flr_state = le16_to_cpu(comp_v1->lcm_flags) &
+ LCM_FL_FLR_MASK;
+ mirror_cnt = le16_to_cpu(comp_v1->lcm_mirror_count) + 1;
+ } else {
+ comp_cnt = 1;
+ lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
+ lo->ldo_is_composite = 0;
+ }
- LASSERT(buf->lb_len >= lov_mds_md_size(lo->ldo_stripenr, magic));
+ rc = lod_alloc_comp_entries(lo, mirror_cnt, comp_cnt);
+ if (rc)
+ GOTO(out, rc);
- if (magic == LOV_MAGIC_V3) {
- struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *) lmm;
- objs = &v3->lmm_objects[0];
- lod_object_set_pool(lo, v3->lmm_pool_name);
- } else {
- objs = &lmm->lmm_objects[0];
+ for (i = 0; i < comp_cnt; i++) {
+ struct lod_layout_component *lod_comp;
+ struct lu_extent *ext;
+ __u32 offs;
+
+ lod_comp = &lo->ldo_comp_entries[i];
+ if (lo->ldo_is_composite) {
+ offs = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
+ lmm = (struct lov_mds_md_v1 *)((char *)comp_v1 + offs);
+ magic = le32_to_cpu(lmm->lmm_magic);
+
+ ext = &comp_v1->lcm_entries[i].lcme_extent;
+ lod_comp->llc_extent.e_start =
+ le64_to_cpu(ext->e_start);
+ lod_comp->llc_extent.e_end = le64_to_cpu(ext->e_end);
+ lod_comp->llc_flags =
+ le32_to_cpu(comp_v1->lcm_entries[i].lcme_flags);
+ if (lod_comp->llc_flags & LCME_FL_NOSYNC)
+ lod_comp->llc_timestamp = le64_to_cpu(
+ comp_v1->lcm_entries[i].lcme_timestamp);
+ lod_comp->llc_id =
+ le32_to_cpu(comp_v1->lcm_entries[i].lcme_id);
+ if (lod_comp->llc_id == LCME_ID_INVAL)
+ GOTO(out, rc = -EINVAL);
+ } else {
+ lod_comp_set_init(lod_comp);
+ }
+
+ pattern = le32_to_cpu(lmm->lmm_pattern);
+ if (lov_pattern(pattern) != LOV_PATTERN_RAID0 &&
+ lov_pattern(pattern) != LOV_PATTERN_MDT)
+ GOTO(out, rc = -EINVAL);
+
+ lod_comp->llc_pattern = pattern;
+ lod_comp->llc_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
+ lod_comp->llc_stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
+ lod_comp->llc_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
+
+ if (magic == LOV_MAGIC_V3) {
+ struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *)lmm;
+ lod_set_pool(&lod_comp->llc_pool, v3->lmm_pool_name);
+ objs = &v3->lmm_objects[0];
+ } else {
+ lod_set_pool(&lod_comp->llc_pool, NULL);
+ objs = &lmm->lmm_objects[0];
+ }
+
+ /**
+ * If uninstantiated template component has valid l_ost_idx,
+ * then user has specified ost list for this component.
+ */
+ if (!lod_comp_inited(lod_comp)) {
+ __u16 stripe_count;
+
+ if (objs[0].l_ost_idx != (__u32)-1UL) {
+ stripe_count = lod_comp_entry_stripe_count(
+ lo, lod_comp, false);
+ if (stripe_count == 0 &&
+ !(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
+ !(lod_comp->llc_pattern & LOV_PATTERN_MDT))
+ GOTO(out, rc = -E2BIG);
+ /**
+ * load the user specified ost list, when this
+ * component is instantiated later, it will be
+ * used in lod_alloc_ost_list().
+ */
+ lod_comp->llc_ostlist.op_count = stripe_count;
+ lod_comp->llc_ostlist.op_size =
+ stripe_count * sizeof(__u32);
+ OBD_ALLOC(lod_comp->llc_ostlist.op_array,
+ lod_comp->llc_ostlist.op_size);
+ if (!lod_comp->llc_ostlist.op_array)
+ GOTO(out, rc = -ENOMEM);
+
+ for (j = 0; j < stripe_count; j++)
+ lod_comp->llc_ostlist.op_array[j] =
+ le32_to_cpu(objs[j].l_ost_idx);
+
+ /**
+ * this component OST objects starts from the
+ * first ost_idx, lod_alloc_ost_list() will
+ * check this.
+ */
+ lod_comp->llc_stripe_offset = objs[0].l_ost_idx;
+ } else {
+ /**
+ * for uninstantiated component,
+ * lmm_layout_gen stores default stripe offset.
+ */
+ lod_comp->llc_stripe_offset =
+ lmm->lmm_layout_gen;
+ }
+ }
+
+ /* skip un-instantiated component object initialization */
+ if (!lod_comp_inited(lod_comp))
+ continue;
+
+ if (!(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
+ !(lod_comp->llc_pattern & LOV_PATTERN_MDT)) {
+ rc = lod_initialize_objects(env, lo, objs, i);
+ if (rc)
+ GOTO(out, rc);
+ }
}
- rc = lod_initialize_objects(env, lo, objs);
+ rc = lod_fill_mirrors(lo);
+ if (rc)
+ GOTO(out, rc);
out:
+ if (rc)
+ lod_striping_free_nolock(env, lo);
RETURN(rc);
}
-/*
- * Load and parse striping information, create in-core representation for the
- * stripes
+/**
+ * Check whether the striping (LOVEA for regular file, LMVEA for directory)
+ * is already cached.
+ *
+ * \param[in] lo LOD object
+ *
+ * \retval True if the striping is cached, otherwise
+ * return false.
*/
-int lod_load_striping(const struct lu_env *env, struct lod_object *lo)
+static bool lod_striping_loaded(struct lod_object *lo)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct dt_object *next = dt_object_child(&lo->ldo_obj);
- int rc;
- ENTRY;
+ if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr) &&
+ lo->ldo_comp_cached)
+ return true;
- /*
- * currently this code is supposed to be called from declaration
- * phase only, thus the object is not expected to be locked by caller
- */
- dt_write_lock(env, next, 0);
- /* already initialized? */
- if (lo->ldo_stripe) {
- int i;
- /* check validity */
- for (i = 0; i < lo->ldo_stripenr; i++)
- LASSERTF(lo->ldo_stripe[i], "stripe %d is NULL\n", i);
- GOTO(out, rc = 0);
+ if (S_ISDIR(lod2lu_obj(lo)->lo_header->loh_attr)) {
+ if (lo->ldo_dir_stripe_loaded)
+ return true;
+
+ /* Never load LMV stripe for slaves of striped dir */
+ if (lo->ldo_dir_slave_stripe)
+ return true;
}
+ return false;
+}
+
+/**
+ * A generic function to initialize the stripe objects.
+ *
+ * A protected version of lod_striping_load_locked() - load the striping
+ * information from storage, parse that and instantiate LU objects to
+ * represent the stripes. The LOD object \a lo supplies a pointer to the
+ * next sub-object in the LU stack so we can lock it. Also use \a lo to
+ * return an array of references to the newly instantiated objects.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in,out] lo LOD object, where striping is stored and
+ * which gets an array of references
+ *
+ * \retval 0 if parsing and object creation succeed
+ * \retval negative error number on failure
+ **/
+int lod_striping_load(const struct lu_env *env, struct lod_object *lo)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ struct lu_buf *buf = &info->lti_buf;
+ int rc = 0;
+
+ ENTRY;
+
if (!dt_object_exists(next))
- GOTO(out, rc = 0);
+ RETURN(0);
- /* only regular files can be striped */
- if (!(lu_object_attr(lod2lu_obj(lo)) & S_IFREG))
- GOTO(out, rc = 0);
+ if (lod_striping_loaded(lo))
+ RETURN(0);
- LASSERT(lo->ldo_stripenr == 0);
+ mutex_lock(&lo->ldo_layout_mutex);
+ if (lod_striping_loaded(lo))
+ GOTO(unlock, rc = 0);
- rc = lod_get_lov_ea(env, lo);
- if (rc <= 0)
- GOTO(out, rc);
+ if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr)) {
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
+ GOTO(unlock, rc);
+
+ /*
+ * there is LOV EA (striping information) in this object
+ * let's parse it and create in-core objects for the stripes
+ */
+ buf->lb_buf = info->lti_ea_store;
+ buf->lb_len = info->lti_ea_store_size;
+ rc = lod_parse_striping(env, lo, buf);
+ if (rc == 0)
+ lo->ldo_comp_cached = 1;
+ } else if (S_ISDIR(lod2lu_obj(lo)->lo_header->loh_attr)) {
+ rc = lod_get_lmv_ea(env, lo);
+ if (rc < (typeof(rc))sizeof(struct lmv_mds_md_v1)) {
+ /* Let's set stripe_loaded to avoid further
+ * stripe loading especially for non-stripe directory,
+ * which can hurt performance. (See LU-9840)
+ */
+ if (rc == 0)
+ lo->ldo_dir_stripe_loaded = 1;
+ GOTO(unlock, rc = rc > 0 ? -EINVAL : rc);
+ }
+ buf->lb_buf = info->lti_ea_store;
+ buf->lb_len = info->lti_ea_store_size;
+ if (rc == sizeof(struct lmv_mds_md_v1)) {
+ rc = lod_load_lmv_shards(env, lo, buf, true);
+ if (buf->lb_buf != info->lti_ea_store) {
+ OBD_FREE_LARGE(info->lti_ea_store,
+ info->lti_ea_store_size);
+ info->lti_ea_store = buf->lb_buf;
+ info->lti_ea_store_size = buf->lb_len;
+ }
+
+ if (rc < 0)
+ GOTO(unlock, rc);
+ }
+
+ /*
+ * there is LMV EA (striping information) in this object
+ * let's parse it and create in-core objects for the stripes
+ */
+ rc = lod_parse_dir_striping(env, lo, buf);
+ if (rc == 0)
+ lo->ldo_dir_stripe_loaded = 1;
+ }
+ EXIT;
+unlock:
+ mutex_unlock(&lo->ldo_layout_mutex);
+
+ return rc;
+}
+
+int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
+ const struct lu_buf *buf)
+{
+ int rc;
+
+ ENTRY;
+
+ mutex_lock(&lo->ldo_layout_mutex);
+ lod_striping_free_nolock(env, lo);
+ rc = lod_parse_striping(env, lo, buf);
+ mutex_unlock(&lo->ldo_layout_mutex);
- /*
- * there is LOV EA (striping information) in this object
- * let's parse it and create in-core objects for the stripes
- */
- info->lti_buf.lb_buf = info->lti_ea_store;
- info->lti_buf.lb_len = info->lti_ea_store_size;
- rc = lod_parse_striping(env, lo, &info->lti_buf);
-out:
- dt_write_unlock(env, next);
RETURN(rc);
}
-int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf,
- int specific)
+/**
+ * Verify lov_user_md_v1/v3 striping.
+ *
+ * Check the validity of all fields including the magic, stripe size,
+ * stripe count, stripe offset and that the pool is present. Also check
+ * that each target index points to an existing target. The additional
+ * \a is_from_disk turns additional checks. In some cases zero fields
+ * are allowed (like pattern=0).
+ *
+ * \param[in] d LOD device
+ * \param[in] buf buffer with LOV EA to verify
+ * \param[in] is_from_disk 0 - from user, allow some fields to be 0
+ * 1 - from disk, do not allow
+ *
+ * \retval 0 if the striping is valid
+ * \retval -EINVAL if striping is invalid
+ */
+static int lod_verify_v1v3(struct lod_device *d, const struct lu_buf *buf,
+ bool is_from_disk)
{
struct lov_user_md_v1 *lum;
- struct lov_user_md_v3 *v3 = NULL;
+ struct lov_user_md_v3 *lum3;
struct pool_desc *pool = NULL;
- int rc;
+ __u32 magic;
+ __u32 stripe_size;
+ __u16 stripe_count;
+ __u16 stripe_offset;
+ size_t lum_size;
+ int rc = 0;
ENTRY;
lum = buf->lb_buf;
- if (lum->lmm_magic != LOV_USER_MAGIC_V1 &&
- lum->lmm_magic != LOV_USER_MAGIC_V3 &&
- lum->lmm_magic != LOV_MAGIC_V1_DEF &&
- lum->lmm_magic != LOV_MAGIC_V3_DEF) {
- CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#x\n",
- lum->lmm_magic);
- RETURN(-EINVAL);
+ if (buf->lb_len < sizeof(*lum)) {
+ CDEBUG(D_LAYOUT, "buf len %zu too small for lov_user_md\n",
+ buf->lb_len);
+ GOTO(out, rc = -EINVAL);
}
- if ((specific && lum->lmm_pattern != LOV_PATTERN_RAID0) ||
- (specific == 0 && lum->lmm_pattern != 0)) {
- CDEBUG(D_IOCTL, "bad userland stripe pattern: %#x\n",
- lum->lmm_pattern);
- RETURN(-EINVAL);
+ magic = le32_to_cpu(lum->lmm_magic) & ~LOV_MAGIC_DEFINED;
+ if (magic != LOV_USER_MAGIC_V1 &&
+ magic != LOV_USER_MAGIC_V3 &&
+ magic != LOV_USER_MAGIC_SPECIFIC) {
+ CDEBUG(D_LAYOUT, "bad userland LOV MAGIC: %#x\n",
+ le32_to_cpu(lum->lmm_magic));
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* the user uses "0" for default stripe pattern normally. */
+ if (!is_from_disk && lum->lmm_pattern == LOV_PATTERN_NONE)
+ lum->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
+
+ if (!lov_pattern_supported(le32_to_cpu(lum->lmm_pattern))) {
+ CDEBUG(D_LAYOUT, "bad userland stripe pattern: %#x\n",
+ le32_to_cpu(lum->lmm_pattern));
+ GOTO(out, rc = -EINVAL);
}
+ /* a released lum comes from creating orphan on hsm release,
+ * doesn't make sense to verify it. */
+ if (le32_to_cpu(lum->lmm_pattern) & LOV_PATTERN_F_RELEASED)
+ GOTO(out, rc = 0);
+
/* 64kB is the largest common page size we see (ia64), and matches the
* check in lfs */
- if (lum->lmm_stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
- CDEBUG(D_IOCTL, "stripe size %u not multiple of %u, fixing\n",
- lum->lmm_stripe_size, LOV_MIN_STRIPE_SIZE);
- RETURN(-EINVAL);
+ stripe_size = le32_to_cpu(lum->lmm_stripe_size);
+ if (stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
+ CDEBUG(D_LAYOUT, "stripe size %u not a multiple of %u\n",
+ stripe_size, LOV_MIN_STRIPE_SIZE);
+ GOTO(out, rc = -EINVAL);
}
- /* an offset of -1 is treated as a "special" valid offset */
- if (lum->lmm_stripe_offset != (typeof(lum->lmm_stripe_offset))(-1)) {
+ stripe_offset = le16_to_cpu(lum->lmm_stripe_offset);
+ if (!is_from_disk && stripe_offset != LOV_OFFSET_DEFAULT &&
+ lov_pattern(le32_to_cpu(lum->lmm_pattern)) != LOV_PATTERN_MDT) {
/* if offset is not within valid range [0, osts_size) */
- if (lum->lmm_stripe_offset >= d->lod_osts_size) {
- CDEBUG(D_IOCTL, "stripe offset %u >= bitmap size %u\n",
- lum->lmm_stripe_offset, d->lod_osts_size);
- RETURN(-EINVAL);
+ if (stripe_offset >= d->lod_osts_size) {
+ CDEBUG(D_LAYOUT, "stripe offset %u >= bitmap size %u\n",
+ stripe_offset, d->lod_osts_size);
+ GOTO(out, rc = -EINVAL);
}
/* if lmm_stripe_offset is *not* in bitmap */
- if (!cfs_bitmap_check(d->lod_ost_bitmap,
- lum->lmm_stripe_offset)) {
- CDEBUG(D_IOCTL, "stripe offset %u not in bitmap\n",
- lum->lmm_stripe_offset);
- RETURN(-EINVAL);
+ if (!cfs_bitmap_check(d->lod_ost_bitmap, stripe_offset)) {
+ CDEBUG(D_LAYOUT, "stripe offset %u not in bitmap\n",
+ stripe_offset);
+ GOTO(out, rc = -EINVAL);
}
}
- if (lum->lmm_magic == LOV_USER_MAGIC_V3)
- v3 = buf->lb_buf;
+ if (magic == LOV_USER_MAGIC_V1)
+ lum_size = offsetof(struct lov_user_md_v1,
+ lmm_objects[0]);
+ else if (magic == LOV_USER_MAGIC_V3 || magic == LOV_USER_MAGIC_SPECIFIC)
+ lum_size = offsetof(struct lov_user_md_v3,
+ lmm_objects[0]);
+ else
+ GOTO(out, rc = -EINVAL);
- if (v3)
- pool = lod_find_pool(d, v3->lmm_pool_name);
+ stripe_count = le16_to_cpu(lum->lmm_stripe_count);
+ if (buf->lb_len < lum_size) {
+ CDEBUG(D_LAYOUT, "invalid buf len %zu/%zu for lov_user_md with "
+ "magic %#x and stripe_count %u\n",
+ buf->lb_len, lum_size, magic, stripe_count);
+ GOTO(out, rc = -EINVAL);
+ }
- if (pool != NULL) {
- __u16 offs = v3->lmm_stripe_offset;
+ if (!(magic == LOV_USER_MAGIC_V3 || magic == LOV_USER_MAGIC_SPECIFIC))
+ goto out;
+
+ lum3 = buf->lb_buf;
+ /* In the function below, .hs_keycmp resolves to
+ * pool_hashkey_keycmp() */
+ /* coverity[overrun-buffer-val] */
+ pool = lod_find_pool(d, lum3->lmm_pool_name);
+ if (pool == NULL)
+ goto out;
+
+ if (!is_from_disk && stripe_offset != LOV_OFFSET_DEFAULT) {
+ rc = lod_check_index_in_pool(stripe_offset, pool);
+ if (rc < 0)
+ GOTO(out, rc = -EINVAL);
+ }
- if (offs != (typeof(v3->lmm_stripe_offset))(-1)) {
- rc = lod_check_index_in_pool(offs, pool);
- if (rc < 0) {
- lod_pool_putref(pool);
+ if (is_from_disk && stripe_count > pool_tgt_count(pool)) {
+ CDEBUG(D_LAYOUT, "stripe count %u > # OSTs %u in the pool\n",
+ stripe_count, pool_tgt_count(pool));
+ GOTO(out, rc = -EINVAL);
+ }
+
+out:
+ if (pool != NULL)
+ lod_pool_putref(pool);
+
+ RETURN(rc);
+}
+
+static inline
+struct lov_comp_md_entry_v1 *comp_entry_v1(struct lov_comp_md_v1 *comp, int i)
+{
+ LASSERTF((le32_to_cpu(comp->lcm_magic) & ~LOV_MAGIC_DEFINED) ==
+ LOV_USER_MAGIC_COMP_V1, "Wrong magic %x\n",
+ le32_to_cpu(comp->lcm_magic));
+ LASSERTF(i >= 0 && i < le16_to_cpu(comp->lcm_entry_count),
+ "bad index %d, max = %d\n",
+ i, le16_to_cpu(comp->lcm_entry_count));
+
+ return &comp->lcm_entries[i];
+}
+
+#define for_each_comp_entry_v1(comp, entry) \
+ for (entry = comp_entry_v1(comp, 0); \
+ entry <= comp_entry_v1(comp, \
+ le16_to_cpu(comp->lcm_entry_count) - 1); \
+ entry++)
+
+int lod_erase_dom_stripe(struct lov_comp_md_v1 *comp_v1)
+{
+ struct lov_comp_md_entry_v1 *ent, *dom_ent;
+ __u16 entries;
+ __u32 dom_off, dom_size, comp_size;
+ void *blob_src, *blob_dst;
+ unsigned int blob_size, blob_shift;
+
+ entries = le16_to_cpu(comp_v1->lcm_entry_count) - 1;
+ /* if file has only DoM stripe return just error */
+ if (entries == 0)
+ return -EFBIG;
+
+ comp_size = le32_to_cpu(comp_v1->lcm_size);
+ dom_ent = &comp_v1->lcm_entries[0];
+ dom_off = le32_to_cpu(dom_ent->lcme_offset);
+ dom_size = le32_to_cpu(dom_ent->lcme_size);
+
+ /* shift entries array first */
+ comp_v1->lcm_entry_count = cpu_to_le16(entries);
+ memmove(dom_ent, dom_ent + 1,
+ entries * sizeof(struct lov_comp_md_entry_v1));
+
+ /* now move blob of layouts */
+ blob_dst = (void *)comp_v1 + dom_off - sizeof(*dom_ent);
+ blob_src = (void *)comp_v1 + dom_off + dom_size;
+ blob_size = (unsigned long)((void *)comp_v1 + comp_size - blob_src);
+ blob_shift = sizeof(*dom_ent) + dom_size;
+
+ memmove(blob_dst, blob_src, blob_size);
+
+ for_each_comp_entry_v1(comp_v1, ent) {
+ __u32 off;
+
+ off = le32_to_cpu(ent->lcme_offset);
+ ent->lcme_offset = cpu_to_le32(off - blob_shift);
+ }
+
+ comp_v1->lcm_size = cpu_to_le32(comp_size - blob_shift);
+
+ /* notify a caller to re-check entry */
+ return -ERESTART;
+}
+
+int lod_fix_dom_stripe(struct lod_device *d, struct lov_comp_md_v1 *comp_v1)
+{
+ struct lov_comp_md_entry_v1 *ent, *dom_ent;
+ struct lu_extent *dom_ext, *ext;
+ struct lov_user_md_v1 *lum;
+ __u32 stripe_size;
+ __u16 mid, dom_mid;
+ int rc = 0;
+
+ dom_ent = &comp_v1->lcm_entries[0];
+ dom_ext = &dom_ent->lcme_extent;
+ dom_mid = mirror_id_of(le32_to_cpu(dom_ent->lcme_id));
+ stripe_size = d->lod_dom_max_stripesize;
+
+ lum = (void *)comp_v1 + le32_to_cpu(dom_ent->lcme_offset);
+ CDEBUG(D_LAYOUT, "DoM component size %u was bigger than MDT limit %u, "
+ "new size is %u\n", le32_to_cpu(lum->lmm_stripe_size),
+ d->lod_dom_max_stripesize, stripe_size);
+ lum->lmm_stripe_size = cpu_to_le32(stripe_size);
+
+ for_each_comp_entry_v1(comp_v1, ent) {
+ if (ent == dom_ent)
+ continue;
+
+ mid = mirror_id_of(le32_to_cpu(ent->lcme_id));
+ if (mid != dom_mid)
+ continue;
+
+ ext = &ent->lcme_extent;
+ if (ext->e_start != dom_ext->e_end)
+ continue;
+
+ /* Found next component after the DoM one with the same
+ * mirror_id and adjust its start with DoM component end.
+ *
+ * NOTE: we are considering here that there can be only one
+ * DoM component in a file, all replicas are located on OSTs
+ * always and don't need adjustment since use own layouts.
+ */
+ ext->e_start = cpu_to_le64(stripe_size);
+ break;
+ }
+
+ if (stripe_size == 0) {
+ /* DoM component size is zero due to server setting,
+ * remove it from the layout */
+ rc = lod_erase_dom_stripe(comp_v1);
+ } else {
+ /* Update DoM extent end finally */
+ dom_ext->e_end = cpu_to_le64(stripe_size);
+ }
+
+ return rc;
+}
+
+/**
+ * Verify LOV striping.
+ *
+ * \param[in] d LOD device
+ * \param[in] buf buffer with LOV EA to verify
+ * \param[in] is_from_disk 0 - from user, allow some fields to be 0
+ * 1 - from disk, do not allow
+ * \param[in] start extent start for composite layout
+ *
+ * \retval 0 if the striping is valid
+ * \retval -EINVAL if striping is invalid
+ */
+int lod_verify_striping(struct lod_device *d, struct lod_object *lo,
+ const struct lu_buf *buf, bool is_from_disk)
+{
+ struct lov_desc *desc = &d->lod_desc;
+ struct lov_user_md_v1 *lum;
+ struct lov_comp_md_v1 *comp_v1;
+ struct lov_comp_md_entry_v1 *ent;
+ struct lu_extent *ext;
+ struct lu_buf tmp;
+ __u64 prev_end = 0;
+ __u32 stripe_size = 0;
+ __u16 prev_mid = -1, mirror_id = -1;
+ __u32 mirror_count;
+ __u32 magic;
+ int rc = 0;
+ ENTRY;
+
+ lum = buf->lb_buf;
+
+ if (buf->lb_len < sizeof(*lum)) {
+ CDEBUG(D_LAYOUT, "buf len %zu too small for lov_user_md\n",
+ buf->lb_len);
+ RETURN(-EINVAL);
+ }
+
+ magic = le32_to_cpu(lum->lmm_magic) & ~LOV_MAGIC_DEFINED;
+ if (magic != LOV_USER_MAGIC_V1 &&
+ magic != LOV_USER_MAGIC_V3 &&
+ magic != LOV_USER_MAGIC_SPECIFIC &&
+ magic != LOV_USER_MAGIC_COMP_V1) {
+ CDEBUG(D_LAYOUT, "bad userland LOV MAGIC: %#x\n",
+ le32_to_cpu(lum->lmm_magic));
+ RETURN(-EINVAL);
+ }
+
+ if (magic != LOV_USER_MAGIC_COMP_V1)
+ RETURN(lod_verify_v1v3(d, buf, is_from_disk));
+
+ /* magic == LOV_USER_MAGIC_COMP_V1 */
+ comp_v1 = buf->lb_buf;
+ if (buf->lb_len < le32_to_cpu(comp_v1->lcm_size)) {
+ CDEBUG(D_LAYOUT, "buf len %zu is less than %u\n",
+ buf->lb_len, le32_to_cpu(comp_v1->lcm_size));
+ RETURN(-EINVAL);
+ }
+
+recheck:
+ mirror_count = 0;
+ if (le16_to_cpu(comp_v1->lcm_entry_count) == 0) {
+ CDEBUG(D_LAYOUT, "entry count is zero\n");
+ RETURN(-EINVAL);
+ }
+
+ if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr) &&
+ lo->ldo_comp_cnt > 0) {
+ /* could be called from lustre.lov.add */
+ __u32 cnt = lo->ldo_comp_cnt;
+
+ ext = &lo->ldo_comp_entries[cnt - 1].llc_extent;
+ prev_end = ext->e_end;
+
+ ++mirror_count;
+ }
+
+ for_each_comp_entry_v1(comp_v1, ent) {
+ ext = &ent->lcme_extent;
+
+ if (le64_to_cpu(ext->e_start) >= le64_to_cpu(ext->e_end)) {
+ CDEBUG(D_LAYOUT, "invalid extent "DEXT"\n",
+ le64_to_cpu(ext->e_start),
+ le64_to_cpu(ext->e_end));
+ RETURN(-EINVAL);
+ }
+
+ if (is_from_disk) {
+ /* lcme_id contains valid value */
+ if (le32_to_cpu(ent->lcme_id) == 0 ||
+ le32_to_cpu(ent->lcme_id) > LCME_ID_MAX) {
+ CDEBUG(D_LAYOUT, "invalid id %u\n",
+ le32_to_cpu(ent->lcme_id));
RETURN(-EINVAL);
}
+
+ if (le16_to_cpu(comp_v1->lcm_mirror_count) > 0) {
+ mirror_id = mirror_id_of(
+ le32_to_cpu(ent->lcme_id));
+
+ /* first component must start with 0 */
+ if (mirror_id != prev_mid &&
+ le64_to_cpu(ext->e_start) != 0) {
+ CDEBUG(D_LAYOUT,
+ "invalid start:%llu, expect:0\n",
+ le64_to_cpu(ext->e_start));
+ RETURN(-EINVAL);
+ }
+
+ prev_mid = mirror_id;
+ }
}
- if (specific && lum->lmm_stripe_count > pool_tgt_count(pool)) {
- CDEBUG(D_IOCTL,
- "stripe count %u > # OSTs %u in the pool\n",
- lum->lmm_stripe_count, pool_tgt_count(pool));
- lod_pool_putref(pool);
+ if (le64_to_cpu(ext->e_start) == 0) {
+ ++mirror_count;
+ prev_end = 0;
+ }
+
+ /* the next must be adjacent with the previous one */
+ if (le64_to_cpu(ext->e_start) != prev_end) {
+ CDEBUG(D_LAYOUT,
+ "invalid start actual:%llu, expect:%llu\n",
+ le64_to_cpu(ext->e_start), prev_end);
RETURN(-EINVAL);
}
- lod_pool_putref(pool);
+ tmp.lb_buf = (char *)comp_v1 + le32_to_cpu(ent->lcme_offset);
+ tmp.lb_len = le32_to_cpu(ent->lcme_size);
+
+ /* Check DoM entry is always the first one */
+ lum = tmp.lb_buf;
+ if (lov_pattern(le32_to_cpu(lum->lmm_pattern)) ==
+ LOV_PATTERN_MDT) {
+ /* DoM component can be only the first stripe */
+ if (le64_to_cpu(ext->e_start) > 0) {
+ CDEBUG(D_LAYOUT, "invalid DoM component "
+ "with %llu extent start\n",
+ le64_to_cpu(ext->e_start));
+ RETURN(-EINVAL);
+ }
+ stripe_size = le32_to_cpu(lum->lmm_stripe_size);
+ /* There is just one stripe on MDT and it must
+ * cover whole component size. */
+ if (stripe_size != le64_to_cpu(ext->e_end)) {
+ CDEBUG(D_LAYOUT, "invalid DoM layout "
+ "stripe size %u != %llu "
+ "(component size)\n",
+ stripe_size, prev_end);
+ RETURN(-EINVAL);
+ }
+ /* Check stripe size againts per-MDT limit */
+ if (stripe_size > d->lod_dom_max_stripesize) {
+ CDEBUG(D_LAYOUT, "DoM component size "
+ "%u is bigger than MDT limit %u, check "
+ "dom_max_stripesize parameter\n",
+ stripe_size, d->lod_dom_max_stripesize);
+ rc = lod_fix_dom_stripe(d, comp_v1);
+ if (rc == -ERESTART) {
+ /* DoM entry was removed, re-check
+ * new layout from start */
+ goto recheck;
+ } else if (rc) {
+ RETURN(rc);
+ }
+ }
+ }
+
+ prev_end = le64_to_cpu(ext->e_end);
+
+ rc = lod_verify_v1v3(d, &tmp, is_from_disk);
+ if (rc)
+ RETURN(rc);
+
+ if (prev_end == LUSTRE_EOF)
+ continue;
+
+ /* extent end must be aligned with the stripe_size */
+ stripe_size = le32_to_cpu(lum->lmm_stripe_size);
+ if (stripe_size == 0)
+ stripe_size = desc->ld_default_stripe_size;
+ if (stripe_size == 0 || (prev_end & (stripe_size - 1))) {
+ CDEBUG(D_LAYOUT, "stripe size isn't aligned, "
+ "stripe_sz: %u, [%llu, %llu)\n",
+ stripe_size, ext->e_start, prev_end);
+ RETURN(-EINVAL);
+ }
}
+ /* make sure that the mirror_count is telling the truth */
+ if (mirror_count != le16_to_cpu(comp_v1->lcm_mirror_count) + 1)
+ RETURN(-EINVAL);
+
RETURN(0);
}
+/**
+ * set the default stripe size, if unset.
+ *
+ * \param[in,out] val number of bytes per OST stripe
+ *
+ * The minimum stripe size is 64KB to ensure that a single stripe is an
+ * even multiple of a client PAGE_SIZE (IA64, PPC, etc). Otherwise, it
+ * is difficult to split dirty pages across OSCs during writes.
+ */
void lod_fix_desc_stripe_size(__u64 *val)
{
- if (*val < PTLRPC_MAX_BRW_SIZE) {
- LCONSOLE_WARN("Increasing default stripe size to min %u\n",
- PTLRPC_MAX_BRW_SIZE);
- *val = PTLRPC_MAX_BRW_SIZE;
+ if (*val < LOV_MIN_STRIPE_SIZE) {
+ if (*val != 0)
+ LCONSOLE_INFO("Increasing default stripe size to "
+ "minimum value %u\n",
+ LOV_DESC_STRIPE_SIZE_DEFAULT);
+ *val = LOV_DESC_STRIPE_SIZE_DEFAULT;
} else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
*val &= ~(LOV_MIN_STRIPE_SIZE - 1);
- LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
+ LCONSOLE_WARN("Changing default stripe size to %llu (a "
"multiple of %u)\n",
*val, LOV_MIN_STRIPE_SIZE);
}
}
+/**
+ * set the filesystem default number of stripes, if unset.
+ *
+ * \param[in,out] val number of stripes
+ *
+ * A value of "0" means "use the system-wide default stripe count", which
+ * has either been inherited by now, or falls back to 1 stripe per file.
+ * A value of "-1" (0xffffffff) means "stripe over all available OSTs",
+ * and is a valid value, so is left unchanged here.
+ */
void lod_fix_desc_stripe_count(__u32 *val)
{
if (*val == 0)
*val = 1;
}
+/**
+ * set the filesystem default layout pattern
+ *
+ * \param[in,out] val LOV_PATTERN_* layout
+ *
+ * A value of "0" means "use the system-wide default layout type", which
+ * has either been inherited by now, or falls back to plain RAID0 striping.
+ */
void lod_fix_desc_pattern(__u32 *val)
{
/* from lov_setstripe */
- if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) {
+ if ((*val != 0) && (*val != LOV_PATTERN_RAID0) &&
+ (*val != LOV_PATTERN_MDT)) {
LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val);
*val = 0;
}
{
/* fix qos_maxage */
if (*val == 0)
- *val = QOS_DEFAULT_MAXAGE;
+ *val = LOV_DESC_QOS_MAXAGE_DEFAULT;
}
+/**
+ * Used to fix insane default striping.
+ *
+ * \param[in] desc striping description
+ */
void lod_fix_desc(struct lov_desc *desc)
{
lod_fix_desc_stripe_size(&desc->ld_default_stripe_size);
lod_fix_desc_qos_maxage(&desc->ld_qos_maxage);
}
+/**
+ * Initialize the structures used to store pools and default striping.
+ *
+ * \param[in] lod LOD device
+ * \param[in] lcfg configuration structure storing default striping.
+ *
+ * \retval 0 if initialization succeeds
+ * \retval negative error number on failure
+ */
int lod_pools_init(struct lod_device *lod, struct lustre_cfg *lcfg)
{
struct obd_device *obd;
lod->lod_sp_me = LUSTRE_SP_CLI;
/* Set up allocation policy (QoS and RR) */
- CFS_INIT_LIST_HEAD(&lod->lod_qos.lq_oss_list);
+ INIT_LIST_HEAD(&lod->lod_qos.lq_oss_list);
init_rwsem(&lod->lod_qos.lq_rw_sem);
lod->lod_qos.lq_dirty = 1;
lod->lod_qos.lq_rr.lqr_dirty = 1;
lod->lod_qos.lq_prio_free = 232;
/* Default threshold for rr (roughly 17%) */
lod->lod_qos.lq_threshold_rr = 43;
- /* Init statfs fields */
- OBD_ALLOC_PTR(lod->lod_qos.lq_statfs_data);
- if (NULL == lod->lod_qos.lq_statfs_data)
- RETURN(-ENOMEM);
- cfs_waitq_init(&lod->lod_qos.lq_statfs_waitq);
/* Set up OST pool environment */
lod->lod_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
CFS_HASH_MAX_THETA,
&pool_hash_operations,
CFS_HASH_DEFAULT);
- if (!lod->lod_pools_hash_body)
- GOTO(out_statfs, rc = -ENOMEM);
- CFS_INIT_LIST_HEAD(&lod->lod_pool_list);
+ if (lod->lod_pools_hash_body == NULL)
+ RETURN(-ENOMEM);
+
+ INIT_LIST_HEAD(&lod->lod_pool_list);
lod->lod_pool_count = 0;
rc = lod_ost_pool_init(&lod->lod_pool_info, 0);
if (rc)
GOTO(out_hash, rc);
+ lod_qos_rr_init(&lod->lod_qos.lq_rr);
rc = lod_ost_pool_init(&lod->lod_qos.lq_rr.lqr_pool, 0);
if (rc)
GOTO(out_pool_info, rc);
lod_ost_pool_free(&lod->lod_pool_info);
out_hash:
cfs_hash_putref(lod->lod_pools_hash_body);
-out_statfs:
- OBD_FREE_PTR(lod->lod_qos.lq_statfs_data);
+
return rc;
}
+/**
+ * Release the structures describing the pools.
+ *
+ * \param[in] lod LOD device from which we release the structures
+ *
+ * \retval 0 always
+ */
int lod_pools_fini(struct lod_device *lod)
{
struct obd_device *obd = lod2obd(lod);
- cfs_list_t *pos, *tmp;
- struct pool_desc *pool;
+ struct pool_desc *pool, *tmp;
ENTRY;
- cfs_list_for_each_safe(pos, tmp, &lod->lod_pool_list) {
- pool = cfs_list_entry(pos, struct pool_desc, pool_list);
+ list_for_each_entry_safe(pool, tmp, &lod->lod_pool_list, pool_list) {
/* free pool structs */
CDEBUG(D_INFO, "delete pool %p\n", pool);
+ /* In the function below, .hs_keycmp resolves to
+ * pool_hashkey_keycmp() */
+ /* coverity[overrun-buffer-val] */
lod_pool_del(obd, pool->pool_name);
}
cfs_hash_putref(lod->lod_pools_hash_body);
lod_ost_pool_free(&(lod->lod_qos.lq_rr.lqr_pool));
lod_ost_pool_free(&lod->lod_pool_info);
- OBD_FREE_PTR(lod->lod_qos.lq_statfs_data);
+
RETURN(0);
}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff