* 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
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2016, Intel Corporation.
*/
/*
* lustre/lod/lod_lov.c
#include <obd_class.h>
#include <lustre_lfsck.h>
#include <lustre_lmv.h>
+#include <lustre_swab.h>
#include "lod_internal.h"
*/
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;
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;
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;
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_PINGLESS |
- OBD_CONNECT_LFSCK;
+ OBD_CONNECT_LFSCK |
+ OBD_CONNECT_BULK_MBITS;
data->ocd_group = tgt_index;
ltd = &lod->lod_ost_descs;
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 |
- OBD_CONNECT_LFSCK;
- /* XXX set MDS-MDS flags, remove this when running this
- * on client*/
- data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS;
+ OBD_CONNECT_LFSCK |
+ OBD_CONNECT_BULK_MBITS;
spin_lock(&imp->imp_lock);
imp->imp_server_timeout = 1;
spin_unlock(&imp->imp_lock);
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);
-
/* Allocate ost descriptor and fill it */
OBD_ALLOC_PTR(tgt_desc);
if (!tgt_desc)
GOTO(out_conn, 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);
+ }
+ }
- rc = lfsck_add_target(env, lod->lod_child, d, exp, index, for_ost);
- if (rc != 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);
+
return rc;
}
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++;
if (info->lti_ea_store == NULL)
RETURN(-ENOMEM);
info->lti_ea_store_size = round;
+
RETURN(0);
}
+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;
+}
+
/**
- * Make LOV EA for striped object.
+ * Resize per-thread storage to hold default striping component entries
*
- * Generate striping information and store it in the LOV EA of the given
- * object. The caller must ensure nobody else is calling the function
- * against the object concurrently. The transaction must be started.
- * FLDB service must be running as well; it's used to map FID to the target,
- * which is stored in LOV EA.
+ * 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)
+{
+ 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 cnt)
+{
+ LASSERT(cnt != 0);
+ LASSERT(lo->ldo_comp_cnt == 0 && lo->ldo_comp_entries == NULL);
+
+ OBD_ALLOC_LARGE(lo->ldo_comp_entries,
+ sizeof(*lo->ldo_comp_entries) * cnt);
+ if (lo->ldo_comp_entries == NULL)
+ return -ENOMEM;
+ lo->ldo_comp_cnt = cnt;
+ 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] th transaction handle
+ * \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 LOV EA is stored successfully
+ * \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;
- size_t lmm_size;
+ struct lod_layout_component *lod_comp;
+ __u32 magic;
+ __u16 stripecnt;
+ int i, rc = 0;
ENTRY;
LASSERT(lo);
+ 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 != NULL ? 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);
- }
-
- if (lo->ldo_pattern == 0) /* default striping */
- lo->ldo_pattern = LOV_PATTERN_RAID0;
-
- 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(lo->ldo_pattern);
+ 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(lo->ldo_stripe_size);
- lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_stripenr);
- if (lo->ldo_pattern & LOV_PATTERN_F_RELEASED)
- lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_released_stripenr);
- lmm->lmm_layout_gen = 0;
+
+ lmm->lmm_stripe_size = cpu_to_le32(lod_comp->llc_stripe_size);
+ lmm->lmm_stripe_count = cpu_to_le16(lod_comp->llc_stripenr);
+ /**
+ * 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;
- size_t cplen = strlcpy(v3->lmm_pool_name, lo->ldo_pool,
- sizeof(v3->lmm_pool_name));
+ 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];
}
+ stripecnt = lod_comp_entry_stripecnt(lo, lod_comp, is_dir);
+ if (!is_dir && lo->ldo_is_composite)
+ lod_comp_shrink_stripecount(lod_comp, &stripecnt);
+
+ 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 < stripecnt; 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++) {
- struct lu_fid *fid = &info->lti_fid;
- struct lod_device *lod;
- __u32 index;
- int type = LU_SEQ_RANGE_OST;
-
- lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
- LASSERT(lo->ldo_stripe[i]);
+ rc = fid_to_ostid(&info->lti_fid, &info->lti_ostid);
+ LASSERT(rc == 0);
- *fid = *lu_object_fid(&lo->ldo_stripe[i]->do_lu);
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MULTIPLE_REF)) {
- if (cfs_fail_val == 0)
- cfs_fail_val = fid->f_oid;
+ 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
- fid->f_oid = cfs_fail_val;
+ 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) {
+ /* 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(stripecnt, magic);
+ RETURN(rc);
+}
- rc = fid_to_ostid(fid, &info->lti_ostid);
- LASSERT(rc == 0);
-
- ostid_cpu_to_le(&info->lti_ostid, &objs[i].l_ost_oi);
- objs[i].l_ost_gen = cpu_to_le32(0);
- rc = lod_fld_lookup(env, lod, fid, &index, &type);
- if (rc < 0) {
- CERROR("%s: Can not locate "DFID": rc = %d\n",
- lod2obd(lod)->obd_name, PFID(fid), rc);
- lod_object_free_striping(env, lo);
- RETURN(rc);
+/**
+ * Generate component ID for new created component.
+ *
+ * \param[in] lo LOD object
+ * \param[in] comp_idx index of ldo_comp_entries
+ *
+ * \retval component ID on success
+ * \retval LCME_ID_INVAL on failure
+ */
+static __u32 lod_gen_component_id(struct lod_object *lo, int comp_idx)
+{
+ struct lod_layout_component *lod_comp;
+ __u32 id, start, end;
+ int i;
+
+ LASSERT(lo->ldo_comp_entries[comp_idx].llc_id == LCME_ID_INVAL);
+
+ lod_obj_inc_layout_gen(lo);
+ id = lo->ldo_layout_gen;
+ if (likely(id <= LCME_ID_MAX))
+ return id;
+
+ /* Layout generation wraps, need to check collisions. */
+ start = id & LCME_ID_MASK;
+ end = LCME_ID_MAX;
+again:
+ for (id = start; id <= end; id++) {
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+ if (id == lod_comp->llc_id)
+ break;
}
- objs[i].l_ost_idx = cpu_to_le32(index);
+ /* Found the ununsed ID */
+ if (i == lo->ldo_comp_cnt)
+ return id;
+ }
+ if (end == LCME_ID_MAX) {
+ start = 1;
+ end = min(lo->ldo_layout_gen & LCME_ID_MASK,
+ (__u32)(LCME_ID_MAX - 1));
+ goto again;
}
- 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);
- if (rc < 0)
- lod_object_free_striping(env, lo);
+ return LCME_ID_INVAL;
+}
+
+/**
+ * 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;
+ bool is_composite;
+ int i, rc = 0, offset;
+ ENTRY;
+ if (is_dir) {
+ comp_cnt = lo->ldo_def_striping->lds_def_comp_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;
+ 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);
+ }
+
+ lcm = (struct lov_comp_md_v1 *)lmm;
+ lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
+ lcm->lcm_entry_count = cpu_to_le16(comp_cnt);
+
+ 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];
+
+ if (lod_comp->llc_id == LCME_ID_INVAL && !is_dir) {
+ lod_comp->llc_id = lod_gen_component_id(lo, i);
+ if (lod_comp->llc_id == LCME_ID_INVAL)
+ GOTO(out, rc = -ERANGE);
+ }
+ 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);
+ 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);
}
* \param[in] lo LOD object
* \param[in] name name of the EA
*
- * \retval 0 if EA is fetched successfully
+ * \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,
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, name, BYPASS_CAPA);
+ rc = dt_xattr_get(env, next, &info->lti_buf, name);
}
/* if object is not striped or inaccessible */
if (rc == -ERANGE) {
/* EA doesn't fit, reallocate new buffer */
- rc = dt_xattr_get(env, next, &LU_BUF_NULL, name,
- BYPASS_CAPA);
+ rc = dt_xattr_get(env, next, &LU_BUF_NULL, name);
if (rc == -ENODATA || rc == -ENOENT)
RETURN(0);
else if (rc < 0)
}
/**
- * Store default striping.
- *
- * Store default striping for the files in the given directory. The data
- * are stored in the LOD-object representing the directory (ldo_def_* fields).
- * If default striping matches virtual fs-wide default striping, then we
- * store nothing. This mean that the files in the directory will be created
- * with filesystem-wide default striping. The transaction must be started.
- *
- * \param[in] env execution environment for this thread
- * \param[in] dt dt object representing directory in LOD layer
- * \param[in] th transaction handle
- *
- * \retval 0 if stored successfully or no need to store
- * \retval negative error number on failure
- */
-int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
- struct thandle *th)
-{
- 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;
-
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(-ENOTDIR);
- /*
- * 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);
-
- v3 = info->lti_ea_store;
- if (info->lti_ea_store_size < sizeof(*v3)) {
- rc = lod_ea_store_resize(info, sizeof(*v3));
- if (rc != 0)
- RETURN(rc);
- v3 = info->lti_ea_store;
- }
- memset(v3, 0, sizeof(*v3));
- v3->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V3);
- v3->lmm_stripe_count = cpu_to_le16(lo->ldo_def_stripenr);
- v3->lmm_stripe_offset = cpu_to_le16(lo->ldo_def_stripe_offset);
- v3->lmm_stripe_size = cpu_to_le32(lo->ldo_def_stripe_size);
- if (lo->ldo_pool != NULL) {
- strlcpy(v3->lmm_pool_name, lo->ldo_pool,
- sizeof(v3->lmm_pool_name));
- v3->lmm_pool_name[sizeof(v3->lmm_pool_name) - 1] = '\0';
- }
- 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);
-
- RETURN(rc);
-}
-
-/**
* Verify the target index is present in the current configuration.
*
* \param[in] md LOD device where the target table is stored
* \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_layout_component *lod_comp;
struct lod_thread_info *info = lod_env_info(env);
struct lod_device *md;
struct lu_object *o, *n;
LASSERT(lo != NULL);
md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
- LASSERT(lo->ldo_stripe == NULL);
- LASSERT(lo->ldo_stripenr > 0);
- LASSERT(lo->ldo_stripe_size > 0);
- stripe_len = lo->ldo_stripenr;
+ 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_stripenr > 0);
+ LASSERT(lod_comp->llc_stripe_size > 0);
+
+ stripe_len = lod_comp->llc_stripenr;
OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_len);
if (stripe == NULL)
RETURN(-ENOMEM);
- for (i = 0; i < lo->ldo_stripenr; i++) {
+ for (i = 0; i < lod_comp->llc_stripenr; i++) {
if (unlikely(lovea_slot_is_dummy(&objs[i])))
continue;
if (rc != 0) {
for (i = 0; i < stripe_len; i++)
if (stripe[i] != NULL)
- lu_object_put(env, &stripe[i]->do_lu);
+ dt_object_put(env, stripe[i]);
OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
- lo->ldo_stripenr = 0;
+ lod_comp->llc_stripenr = 0;
} else {
- lo->ldo_stripe = stripe;
- lo->ldo_stripes_allocated = stripe_len;
+ lod_comp->llc_stripe = stripe;
+ lod_comp->llc_stripes_allocated = stripe_len;
}
RETURN(rc);
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;
- __u32 pattern;
- int rc = 0;
+ __u32 magic, pattern;
+ int i, j, rc = 0;
+ __u16 comp_cnt;
ENTRY;
LASSERT(buf);
LASSERT(buf->lb_buf);
LASSERT(buf->lb_len);
- 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);
- pattern = le32_to_cpu(lmm->lmm_pattern);
- if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3)
+ if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3 &&
+ magic != LOV_MAGIC_COMP_V1)
GOTO(out, rc = -EINVAL);
- if (lov_pattern(pattern) != LOV_PATTERN_RAID0)
- GOTO(out, rc = -EINVAL);
-
- lo->ldo_pattern = pattern;
- lo->ldo_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
- lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
- lo->ldo_stripenr = le16_to_cpu(lmm->lmm_stripe_count);
- /* released file stripenr fixup. */
- if (pattern & LOV_PATTERN_F_RELEASED)
- lo->ldo_stripenr = 0;
- LASSERT(buf->lb_len >= lov_mds_md_size(lo->ldo_stripenr, magic));
+ lod_free_comp_entries(lo);
- 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);
+ 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;
} else {
- objs = &lmm->lmm_objects[0];
+ comp_cnt = 1;
+ lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
+ lo->ldo_is_composite = 0;
}
- if (lo->ldo_stripenr > 0)
- rc = lod_initialize_objects(env, lo, objs);
+ rc = lod_alloc_comp_entries(lo, comp_cnt);
+ if (rc)
+ GOTO(out, rc);
+
+ 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);
+ 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)
+ GOTO(out, rc = -EINVAL);
+
+ lod_comp->llc_pattern = pattern;
+ lod_comp->llc_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
+ lod_comp->llc_stripenr = 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;
+ objs = &v3->lmm_objects[0];
+ /* no need to set pool, which is used in create only */
+ } else {
+ 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)) {
+ if (objs[0].l_ost_idx != (__u32)-1UL) {
+ /**
+ * 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 =
+ lod_comp->llc_stripenr;
+ lod_comp->llc_ostlist.op_size =
+ lod_comp->llc_stripenr * 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 < lod_comp->llc_stripenr; 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)) {
+ rc = lod_initialize_objects(env, lo, objs, i);
+ if (rc)
+ GOTO(out, rc);
+ }
+ }
out:
+ if (rc)
+ lod_object_free_striping(env, lo);
RETURN(rc);
}
/**
+ * 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.
+ */
+static bool lod_striping_loaded(struct lod_object *lo)
+{
+ if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr) &&
+ lo->ldo_comp_cached)
+ return true;
+
+ if (S_ISDIR(lod2lu_obj(lo)->lo_header->loh_attr)) {
+ if (lo->ldo_stripe != NULL)
+ return true;
+
+ /* Never load LMV stripe for slaves of striped dir */
+ if (lo->ldo_dir_slave_stripe)
+ return true;
+ }
+
+ return false;
+}
+
+/**
* Initialize the object representing the stripes.
*
* Unless the stripes are initialized already, fetch LOV (for regular
* objects) or LMV (for directory objects) EA and call lod_parse_striping()
- * to instantiate the objects representing the stripes.
+ * to instantiate the objects representing the stripes. Caller should
+ * hold the dt_write_lock(next).
*
* \param[in] env execution environment for this thread
* \param[in,out] lo LOD object
int rc = 0;
ENTRY;
- /* already initialized? */
- if (lo->ldo_stripe != NULL)
- GOTO(out, rc = 0);
-
if (!dt_object_exists(next))
GOTO(out, rc = 0);
- /* Do not load stripe for slaves of striped dir */
- if (lo->ldo_dir_slave_stripe)
+ if (lod_striping_loaded(lo))
GOTO(out, rc = 0);
- if (S_ISREG(lu_object_attr(lod2lu_obj(lo)))) {
+ if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr)) {
rc = lod_get_lov_ea(env, lo);
if (rc <= 0)
GOTO(out, rc);
buf->lb_buf = info->lti_ea_store;
buf->lb_len = info->lti_ea_store_size;
rc = lod_parse_striping(env, lo, buf);
- } else if (S_ISDIR(lu_object_attr(lod2lu_obj(lo)))) {
+ 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))
GOTO(out, rc = rc > 0 ? -EINVAL : rc);
}
/*
- * there is LOV EA (striping information) in this object
+ * 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);
int lod_load_striping(const struct lu_env *env, struct lod_object *lo)
{
struct dt_object *next = dt_object_child(&lo->ldo_obj);
- int rc = 0;
+ int rc;
+
+ if (!dt_object_exists(next))
+ return 0;
+
+ /* Check without locking first */
+ if (lod_striping_loaded(lo))
+ return 0;
/* currently this code is supposed to be called from declaration
* phase only, thus the object is not expected to be locked by caller */
}
/**
- * Verify striping.
+ * 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
* \retval 0 if the striping is valid
* \retval -EINVAL if striping is invalid
*/
-int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf,
- bool is_from_disk)
+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 *lum3;
lum = buf->lb_buf;
- LASSERT(sizeof(*lum) < sizeof(*lum3));
-
if (buf->lb_len < sizeof(*lum)) {
- CDEBUG(D_IOCTL, "buf len %zu too small for lov_user_md\n",
+ CDEBUG(D_LAYOUT, "buf len %zu too small for lov_user_md\n",
buf->lb_len);
GOTO(out, rc = -EINVAL);
}
- magic = le32_to_cpu(lum->lmm_magic);
+ magic = le32_to_cpu(lum->lmm_magic) & ~LOV_MAGIC_DEF;
if (magic != LOV_USER_MAGIC_V1 &&
magic != LOV_USER_MAGIC_V3 &&
- magic != LOV_MAGIC_V1_DEF &&
- magic != LOV_MAGIC_V3_DEF) {
- CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#x\n", magic);
+ magic != LOV_USER_MAGIC_SPECIFIC) {
+ CDEBUG(D_LAYOUT, "bad userland LOV MAGIC: %#x\n",
+ le32_to_cpu(lum->lmm_magic));
GOTO(out, rc = -EINVAL);
}
if (!is_from_disk && lum->lmm_pattern == 0)
lum->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
- if (le32_to_cpu(lum->lmm_pattern) != LOV_PATTERN_RAID0) {
- CDEBUG(D_IOCTL, "bad userland stripe pattern: %#x\n",
+ 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 */
stripe_size = le32_to_cpu(lum->lmm_stripe_size);
if (stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
- CDEBUG(D_IOCTL, "stripe size %u not a multiple of %u\n",
+ CDEBUG(D_LAYOUT, "stripe size %u not a multiple of %u\n",
stripe_size, LOV_MIN_STRIPE_SIZE);
GOTO(out, rc = -EINVAL);
}
stripe_offset = le16_to_cpu(lum->lmm_stripe_offset);
- if (stripe_offset != LOV_OFFSET_DEFAULT) {
+ if (!is_from_disk && stripe_offset != LOV_OFFSET_DEFAULT) {
/* if offset is not within valid range [0, osts_size) */
if (stripe_offset >= d->lod_osts_size) {
- CDEBUG(D_IOCTL, "stripe offset %u >= bitmap size %u\n",
+ 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, stripe_offset)) {
- CDEBUG(D_IOCTL, "stripe offset %u not in bitmap\n",
+ CDEBUG(D_LAYOUT, "stripe offset %u not in bitmap\n",
stripe_offset);
GOTO(out, rc = -EINVAL);
}
}
- if (magic == LOV_USER_MAGIC_V1 || magic == LOV_MAGIC_V1_DEF)
+ 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_MAGIC_V3_DEF)
+ 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);
stripe_count = le16_to_cpu(lum->lmm_stripe_count);
- if (buf->lb_len != lum_size) {
- CDEBUG(D_IOCTL, "invalid buf len %zu for lov_user_md with "
+ 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, magic, stripe_count);
+ buf->lb_len, lum_size, magic, stripe_count);
GOTO(out, rc = -EINVAL);
}
- if (!(magic == LOV_USER_MAGIC_V3 || magic == LOV_MAGIC_V3_DEF))
+ if (!(magic == LOV_USER_MAGIC_V3 || magic == LOV_USER_MAGIC_SPECIFIC))
goto out;
lum3 = buf->lb_buf;
- if (buf->lb_len < sizeof(*lum3)) {
- CDEBUG(D_IOCTL, "buf len %zu too small for lov_user_md_v3\n",
- buf->lb_len);
- GOTO(out, rc = -EINVAL);
- }
-
/* In the function below, .hs_keycmp resolves to
* pool_hashkey_keycmp() */
/* coverity[overrun-buffer-val] */
if (pool == NULL)
goto out;
- if (stripe_offset != LOV_OFFSET_DEFAULT) {
+ 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 (is_from_disk && stripe_count > pool_tgt_count(pool)) {
- CDEBUG(D_IOCTL,
- "stripe count %u > # OSTs %u in the pool\n",
+ CDEBUG(D_LAYOUT, "stripe count %u > # OSTs %u in the pool\n",
stripe_count, pool_tgt_count(pool));
GOTO(out, rc = -EINVAL);
}
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, const struct lu_buf *buf,
+ bool is_from_disk, __u64 start)
+{
+ struct lov_user_md_v1 *lum;
+ struct lov_comp_md_v1 *comp_v1;
+ __u32 magic;
+ int rc = 0, i;
+ 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_DEF;
+ 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) {
+ struct lov_comp_md_entry_v1 *ent;
+ struct lu_extent *ext;
+ struct lov_desc *desc = &d->lod_desc;
+ struct lu_buf tmp;
+ __u32 stripe_size = 0;
+ __u64 prev_end = start;
+
+ 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);
+ }
+
+ if (le32_to_cpu(comp_v1->lcm_entry_count) == 0) {
+ CDEBUG(D_LAYOUT, "entry count is zero\n");
+ RETURN(-EINVAL);
+ }
+
+ for (i = 0; i < le32_to_cpu(comp_v1->lcm_entry_count); i++) {
+ ent = &comp_v1->lcm_entries[i];
+ ext = &ent->lcme_extent;
+
+ if (is_from_disk &&
+ (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 (le64_to_cpu(ext->e_start) >=
+ le64_to_cpu(ext->e_end)) {
+ CDEBUG(D_LAYOUT, "invalid extent "
+ "[%llu, %llu)\n",
+ le64_to_cpu(ext->e_start),
+ le64_to_cpu(ext->e_end));
+ RETURN(-EINVAL);
+ }
+
+ /* first component must start with 0, and 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);
+ }
+ prev_end = le64_to_cpu(ext->e_end);
+
+ tmp.lb_buf = (char *)comp_v1 +
+ le32_to_cpu(ent->lcme_offset);
+ tmp.lb_len = le32_to_cpu(ent->lcme_size);
+ rc = lod_verify_v1v3(d, &tmp, is_from_disk);
+ if (rc)
+ break;
+
+ lum = tmp.lb_buf;
+
+ /* 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 != LUSTRE_EOF &&
+ (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);
+ }
+ }
+ } else {
+ rc = lod_verify_v1v3(d, buf, is_from_disk);
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * 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 < LOV_MIN_STRIPE_SIZE) {
*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 */
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);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff