* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* lustre/lod/lod_object.c
* local OSD object interface to the MDD layer, and abstracts the
* addressing of local (OSD) and remote (OSP) objects. The API is
* described in the file lustre/include/dt_object.h and in
- * lustre/doc/osd-api.txt.
+ * Documentation/osd-api.txt.
*
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
*/
#define DEBUG_SUBSYSTEM S_MDS
+#include <linux/random.h>
+
#include <obd.h>
#include <obd_class.h>
-#include <lustre_ver.h>
#include <obd_support.h>
-#include <lprocfs_status.h>
#include <lustre_fid.h>
-#include <lustre_param.h>
-#include <lustre_fid.h>
+#include <lustre_linkea.h>
#include <lustre_lmv.h>
+#include <uapi/linux/lustre/lustre_param.h>
+#include <lustre_swab.h>
+#include <uapi/linux/lustre/lustre_ver.h>
+#include <lprocfs_status.h>
#include <md_object.h>
-#include <lustre_linkea.h>
#include "lod_internal.h"
static const char dot[] = ".";
static const char dotdot[] = "..";
-static const struct dt_body_operations lod_body_lnk_ops;
-
/**
* Implementation of dt_index_operations::dio_lookup
*
*
* \see dt_index_operations::dio_lookup() in the API description for details.
*/
-static int lod_index_lookup(const struct lu_env *env, struct dt_object *dt,
- struct dt_rec *rec, const struct dt_key *key)
+static int lod_lookup(const struct lu_env *env, struct dt_object *dt,
+ struct dt_rec *rec, const struct dt_key *key)
{
struct dt_object *next = dt_object_child(dt);
return next->do_index_ops->dio_lookup(env, next, rec, key);
* \see dt_index_operations::dio_declare_insert() in the API description
* for details.
*/
-static int lod_declare_index_insert(const struct lu_env *env,
- struct dt_object *dt,
- const struct dt_rec *rec,
- const struct dt_key *key,
- struct thandle *th)
+static int lod_declare_insert(const struct lu_env *env, struct dt_object *dt,
+ const struct dt_rec *rec,
+ const struct dt_key *key, struct thandle *th)
{
- return lod_sub_object_declare_insert(env, dt_object_child(dt),
- rec, key, th);
+ return lod_sub_declare_insert(env, dt_object_child(dt), rec, key, th);
}
/**
*
* \see dt_index_operations::dio_insert() in the API description for details.
*/
-static int lod_index_insert(const struct lu_env *env,
- struct dt_object *dt,
- const struct dt_rec *rec,
- const struct dt_key *key,
- struct thandle *th,
- int ign)
+static int lod_insert(const struct lu_env *env, struct dt_object *dt,
+ const struct dt_rec *rec, const struct dt_key *key,
+ struct thandle *th, int ign)
{
- return lod_sub_object_index_insert(env, dt_object_child(dt), rec, key,
- th, ign);
+ return lod_sub_insert(env, dt_object_child(dt), rec, key, th, ign);
}
/**
* \see dt_index_operations::dio_declare_delete() in the API description
* for details.
*/
-static int lod_declare_index_delete(const struct lu_env *env,
- struct dt_object *dt,
- const struct dt_key *key,
- struct thandle *th)
+static int lod_declare_delete(const struct lu_env *env, struct dt_object *dt,
+ const struct dt_key *key, struct thandle *th)
{
- return lod_sub_object_declare_delete(env, dt_object_child(dt), key,
- th);
+ return lod_sub_declare_delete(env, dt_object_child(dt), key, th);
}
/**
*
* \see dt_index_operations::dio_delete() in the API description for details.
*/
-static int lod_index_delete(const struct lu_env *env,
- struct dt_object *dt,
- const struct dt_key *key,
- struct thandle *th)
+static int lod_delete(const struct lu_env *env, struct dt_object *dt,
+ const struct dt_key *key, struct thandle *th)
{
- return lod_sub_object_delete(env, dt_object_child(dt), key, th);
+ return lod_sub_delete(env, dt_object_child(dt), key, th);
}
/**
}
static struct dt_index_operations lod_index_ops = {
- .dio_lookup = lod_index_lookup,
- .dio_declare_insert = lod_declare_index_insert,
- .dio_insert = lod_index_insert,
- .dio_declare_delete = lod_declare_index_delete,
- .dio_delete = lod_index_delete,
+ .dio_lookup = lod_lookup,
+ .dio_declare_insert = lod_declare_insert,
+ .dio_insert = lod_insert,
+ .dio_declare_delete = lod_declare_delete,
+ .dio_delete = lod_delete,
.dio_it = {
.init = lod_it_init,
.fini = lod_it_fini,
struct dt_it *it_next;
ENTRY;
- LASSERT(lo->ldo_stripenr > 0);
+ LASSERT(lo->ldo_dir_stripe_count > 0);
next = lo->ldo_stripe[0];
LASSERT(next != NULL);
LASSERT(next->do_index_ops != NULL);
return (struct dt_it *)it;
}
-#define LOD_CHECK_STRIPED_IT(env, it, lo) \
-do { \
- LASSERT((it)->lit_obj != NULL); \
- LASSERT((it)->lit_it != NULL); \
- LASSERT((lo)->ldo_stripenr > 0); \
- LASSERT((it)->lit_stripe_index < (lo)->ldo_stripenr); \
+#define LOD_CHECK_STRIPED_IT(env, it, lo) \
+do { \
+ LASSERT((it)->lit_obj != NULL); \
+ LASSERT((it)->lit_it != NULL); \
+ LASSERT((lo)->ldo_dir_stripe_count > 0); \
+ LASSERT((it)->lit_stripe_index < (lo)->ldo_dir_stripe_count); \
} while (0)
/**
}
/* go to next stripe */
- if (it->lit_stripe_index + 1 >= lo->ldo_stripenr)
+ if (it->lit_stripe_index + 1 >= lo->ldo_dir_stripe_count)
RETURN(1);
it->lit_stripe_index++;
next = lo->ldo_stripe[it->lit_stripe_index];
LASSERT(next != NULL);
- LASSERT(next->do_index_ops != NULL);
-
rc = next->do_ops->do_index_try(env, next, &dt_directory_features);
if (rc != 0)
RETURN(rc);
+ LASSERT(next->do_index_ops != NULL);
+
it_next = next->do_index_ops->dio_it.init(env, next, it->lit_attr);
if (!IS_ERR(it_next)) {
it->lit_it = it_next;
}
static struct dt_index_operations lod_striped_index_ops = {
- .dio_lookup = lod_index_lookup,
- .dio_declare_insert = lod_declare_index_insert,
- .dio_insert = lod_index_insert,
- .dio_declare_delete = lod_declare_index_delete,
- .dio_delete = lod_index_delete,
+ .dio_lookup = lod_lookup,
+ .dio_declare_insert = lod_declare_insert,
+ .dio_insert = lod_insert,
+ .dio_declare_delete = lod_declare_delete,
+ .dio_delete = lod_delete,
.dio_it = {
.init = lod_striped_it_init,
.fini = lod_striped_it_fini,
LASSERT(next->do_ops);
LASSERT(next->do_ops->do_index_try);
- rc = lod_load_striping_locked(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc != 0)
RETURN(rc);
if (rc != 0)
RETURN(rc);
- if (lo->ldo_stripenr > 0) {
+ if (lo->ldo_dir_stripe_count > 0) {
int i;
- for (i = 0; i < lo->ldo_stripenr; i++) {
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
if (dt_object_exists(lo->ldo_stripe[i]) == 0)
continue;
rc = lo->ldo_stripe[i]->do_ops->do_index_try(env,
*
* \see dt_object_operations::do_read_lock() in the API description for details.
*/
-static void lod_object_read_lock(const struct lu_env *env,
- struct dt_object *dt, unsigned role)
+static void lod_read_lock(const struct lu_env *env, struct dt_object *dt,
+ unsigned role)
{
dt_read_lock(env, dt_object_child(dt), role);
}
* \see dt_object_operations::do_write_lock() in the API description for
* details.
*/
-static void lod_object_write_lock(const struct lu_env *env,
- struct dt_object *dt, unsigned role)
+static void lod_write_lock(const struct lu_env *env, struct dt_object *dt,
+ unsigned role)
{
dt_write_lock(env, dt_object_child(dt), role);
}
* \see dt_object_operations::do_read_unlock() in the API description for
* details.
*/
-static void lod_object_read_unlock(const struct lu_env *env,
- struct dt_object *dt)
+static void lod_read_unlock(const struct lu_env *env, struct dt_object *dt)
{
dt_read_unlock(env, dt_object_child(dt));
}
* \see dt_object_operations::do_write_unlock() in the API description for
* details.
*/
-static void lod_object_write_unlock(const struct lu_env *env,
- struct dt_object *dt)
+static void lod_write_unlock(const struct lu_env *env, struct dt_object *dt)
{
dt_write_unlock(env, dt_object_child(dt));
}
* \see dt_object_operations::do_write_locked() in the API description for
* details.
*/
-static int lod_object_write_locked(const struct lu_env *env,
- struct dt_object *dt)
+static int lod_write_locked(const struct lu_env *env, struct dt_object *dt)
{
return dt_write_locked(env, dt_object_child(dt));
}
return dt_attr_get(env, dt_object_child(dt), attr);
}
-/**
- * Mark all of the striped directory sub-stripes dead.
- *
- * When a striped object is a subject to removal, we have
- * to mark all the stripes to prevent further access to
- * them (e.g. create a new file in those). So we mark
- * all the stripes with LMV_HASH_FLAG_DEAD. The function
- * can be used to declare the changes and to apply them.
- * If the object isn't striped, then just return success.
- *
- * \param[in] env execution environment
- * \param[in] dt the striped object
- * \param[in] handle transaction handle
- * \param[in] declare whether to declare the change or apply
- *
- * \retval 0 on success
- * \retval negative if failed
- **/
-static int lod_mark_dead_object(const struct lu_env *env,
- struct dt_object *dt,
- struct thandle *th,
- bool declare)
+static inline void lod_adjust_stripe_info(struct lod_layout_component *comp,
+ struct lov_desc *desc)
{
- struct lod_object *lo = lod_dt_obj(dt);
- struct lmv_mds_md_v1 *lmv;
- __u32 dead_hash_type;
- int rc;
- int i;
+ if (comp->llc_pattern != LOV_PATTERN_MDT) {
+ if (!comp->llc_stripe_count)
+ comp->llc_stripe_count =
+ desc->ld_default_stripe_count;
+ }
+ if (comp->llc_stripe_size <= 0)
+ comp->llc_stripe_size = desc->ld_default_stripe_size;
+}
+int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
+ struct thandle *th,
+ struct lod_obj_stripe_cb_data *data)
+{
+ struct lod_layout_component *lod_comp;
+ int i, j, rc;
ENTRY;
- if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(0);
+ LASSERT(lo->ldo_comp_cnt != 0 && lo->ldo_comp_entries != NULL);
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
- rc = lod_load_striping_locked(env, lo);
- if (rc != 0)
- RETURN(rc);
+ if (lod_comp->llc_stripe == NULL)
+ continue;
- if (lo->ldo_stripenr == 0)
- RETURN(0);
+ /* has stripe but not inited yet, this component has been
+ * declared to be created, but hasn't created yet.
+ */
+ if (!lod_comp_inited(lod_comp))
+ continue;
- rc = lod_get_lmv_ea(env, lo);
- if (rc <= 0)
- RETURN(rc);
+ if (data->locd_comp_skip_cb &&
+ data->locd_comp_skip_cb(env, lo, i, data))
+ continue;
- lmv = lod_env_info(env)->lti_ea_store;
- lmv->lmv_magic = cpu_to_le32(LMV_MAGIC_STRIPE);
- dead_hash_type = le32_to_cpu(lmv->lmv_hash_type) | LMV_HASH_FLAG_DEAD;
- lmv->lmv_hash_type = cpu_to_le32(dead_hash_type);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- struct lu_buf buf;
-
- lmv->lmv_master_mdt_index = i;
- buf.lb_buf = lmv;
- buf.lb_len = sizeof(*lmv);
- if (declare) {
- rc = lod_sub_object_declare_xattr_set(env,
- lo->ldo_stripe[i], &buf,
- XATTR_NAME_LMV,
- LU_XATTR_REPLACE, th);
- } else {
- rc = lod_sub_object_xattr_set(env, lo->ldo_stripe[i],
- &buf, XATTR_NAME_LMV,
- LU_XATTR_REPLACE, th);
+ if (data->locd_comp_cb) {
+ rc = data->locd_comp_cb(env, lo, i, data);
+ if (rc)
+ RETURN(rc);
}
- if (rc != 0)
+
+ /* could used just to do sth about component, not each
+ * stripes
+ */
+ if (!data->locd_stripe_cb)
+ continue;
+
+ LASSERT(lod_comp->llc_stripe_count > 0);
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ struct dt_object *dt = lod_comp->llc_stripe[j];
+
+ if (dt == NULL)
+ continue;
+ rc = data->locd_stripe_cb(env, lo, dt, th, i, j, data);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ }
+ RETURN(0);
+}
+
+static bool lod_obj_attr_set_comp_skip_cb(const struct lu_env *env,
+ struct lod_object *lo, int comp_idx,
+ struct lod_obj_stripe_cb_data *data)
+{
+ struct lod_layout_component *lod_comp = &lo->ldo_comp_entries[comp_idx];
+ bool skipped = false;
+
+ if (!(data->locd_attr->la_valid & LA_LAYOUT_VERSION))
+ return skipped;
+
+ switch (lo->ldo_flr_state) {
+ case LCM_FL_WRITE_PENDING: {
+ int i;
+
+ /* skip stale components */
+ if (lod_comp->llc_flags & LCME_FL_STALE) {
+ skipped = true;
break;
+ }
+
+ /* skip valid and overlapping components, therefore any
+ * attempts to write overlapped components will never succeed
+ * because client will get EINPROGRESS. */
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ if (i == comp_idx)
+ continue;
+
+ if (lo->ldo_comp_entries[i].llc_flags & LCME_FL_STALE)
+ continue;
+
+ if (lu_extent_is_overlapped(&lod_comp->llc_extent,
+ &lo->ldo_comp_entries[i].llc_extent)) {
+ skipped = true;
+ break;
+ }
+ }
+ break;
+ }
+ default:
+ LASSERTF(0, "impossible: %d\n", lo->ldo_flr_state);
+ case LCM_FL_SYNC_PENDING:
+ break;
}
- RETURN(rc);
+ CDEBUG(D_LAYOUT, DFID": %s to set component %x to version: %u\n",
+ PFID(lu_object_fid(&lo->ldo_obj.do_lu)),
+ skipped ? "skipped" : "chose", lod_comp->llc_id,
+ data->locd_attr->la_layout_version);
+
+ return skipped;
+}
+
+static inline int
+lod_obj_stripe_attr_set_cb(const struct lu_env *env, struct lod_object *lo,
+ struct dt_object *dt, struct thandle *th,
+ int comp_idx, int stripe_idx,
+ struct lod_obj_stripe_cb_data *data)
+{
+ if (data->locd_declare)
+ return lod_sub_declare_attr_set(env, dt, data->locd_attr, th);
+
+ if (data->locd_attr->la_valid & LA_LAYOUT_VERSION) {
+ CDEBUG(D_LAYOUT, DFID": set layout version: %u, comp_idx: %d\n",
+ PFID(lu_object_fid(&dt->do_lu)),
+ data->locd_attr->la_layout_version, comp_idx);
+ }
+
+ return lod_sub_attr_set(env, dt, data->locd_attr, th);
}
/**
int rc, i;
ENTRY;
- /* Set dead object on all other stripes */
- if (attr->la_valid & LA_FLAGS && !(attr->la_valid & ~LA_FLAGS) &&
- attr->la_flags & LUSTRE_SLAVE_DEAD_FL) {
- rc = lod_mark_dead_object(env, dt, th, true);
- RETURN(rc);
- }
-
/*
* declare setattr on the local object
*/
- rc = lod_sub_object_declare_attr_set(env, next, attr, th);
+ rc = lod_sub_declare_attr_set(env, next, attr, th);
if (rc)
RETURN(rc);
/* osp_declare_attr_set() ignores all attributes other than
- * UID, GID, and size, and osp_attr_set() ignores all but UID
- * and GID. Declaration of size attr setting happens through
- * lod_declare_init_size(), and not through this function.
- * Therefore we need not load striping unless ownership is
- * changing. This should save memory and (we hope) speed up
- * rename(). */
+ * UID, GID, PROJID, and size, and osp_attr_set() ignores all
+ * but UID, GID and PROJID. Declaration of size attr setting
+ * happens through lod_declare_init_size(), and not through
+ * this function. Therefore we need not load striping unless
+ * ownership is changing. This should save memory and (we hope)
+ * speed up rename().
+ */
if (!S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
- if (!(attr->la_valid & (LA_UID | LA_GID)))
+ if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
RETURN(rc);
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_OWNER))
RETURN(0);
} else {
- if (!(attr->la_valid & (LA_UID | LA_GID | LA_MODE |
+ if (!(attr->la_valid & (LA_UID | LA_GID | LA_PROJID | LA_MODE |
LA_ATIME | LA_MTIME | LA_CTIME |
LA_FLAGS)))
RETURN(rc);
* is being initialized as we don't need this information till
* few specific cases like destroy, chown
*/
- rc = lod_load_striping(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc)
RETURN(rc);
- if (lo->ldo_stripenr == 0)
+ if (!lod_obj_is_striped(dt))
RETURN(0);
/*
* if object is striped declare changes on the stripes
*/
- LASSERT(lo->ldo_stripe);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- if (lo->ldo_stripe[i] == NULL)
- continue;
- rc = lod_sub_object_declare_attr_set(env,
- lo->ldo_stripe[i], attr,
- th);
- if (rc != 0)
- RETURN(rc);
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ LASSERT(lo->ldo_stripe);
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ if (lo->ldo_stripe[i] == NULL)
+ continue;
+ rc = lod_sub_declare_attr_set(env, lo->ldo_stripe[i],
+ attr, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ } else {
+ struct lod_obj_stripe_cb_data data = { { 0 } };
+
+ data.locd_attr = attr;
+ data.locd_declare = true;
+ data.locd_stripe_cb = lod_obj_stripe_attr_set_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_STRIPE) &&
- dt_object_exists(next) != 0 &&
- dt_object_remote(next) == 0)
- lod_sub_object_declare_xattr_del(env, next,
- XATTR_NAME_LOV, th);
+ if (rc)
+ RETURN(rc);
+
+ if (!dt_object_exists(next) || dt_object_remote(next) ||
+ !S_ISREG(attr->la_mode))
+ RETURN(0);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_STRIPE)) {
+ rc = lod_sub_declare_xattr_del(env, next, XATTR_NAME_LOV, th);
+ RETURN(rc);
+ }
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CHANGE_STRIPE) &&
- dt_object_exists(next) &&
- dt_object_remote(next) == 0 && S_ISREG(attr->la_mode)) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CHANGE_STRIPE) ||
+ OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_PFL_RANGE)) {
struct lod_thread_info *info = lod_env_info(env);
struct lu_buf *buf = &info->lti_buf;
buf->lb_buf = info->lti_ea_store;
buf->lb_len = info->lti_ea_store_size;
- lod_sub_object_declare_xattr_set(env, next, buf,
- XATTR_NAME_LOV,
- LU_XATTR_REPLACE, th);
+ rc = lod_sub_declare_xattr_set(env, next, buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, th);
}
RETURN(rc);
int rc, i;
ENTRY;
- /* Set dead object on all other stripes */
- if (attr->la_valid & LA_FLAGS && !(attr->la_valid & ~LA_FLAGS) &&
- attr->la_flags & LUSTRE_SLAVE_DEAD_FL) {
- rc = lod_mark_dead_object(env, dt, th, false);
- RETURN(rc);
- }
-
/*
* apply changes to the local object
*/
- rc = lod_sub_object_attr_set(env, next, attr, th);
+ rc = lod_sub_attr_set(env, next, attr, th);
if (rc)
RETURN(rc);
if (!S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
- if (!(attr->la_valid & (LA_UID | LA_GID)))
+ if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
RETURN(rc);
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_OWNER))
RETURN(0);
} else {
- if (!(attr->la_valid & (LA_UID | LA_GID | LA_MODE |
+ if (!(attr->la_valid & (LA_UID | LA_GID | LA_MODE | LA_PROJID |
LA_ATIME | LA_MTIME | LA_CTIME |
LA_FLAGS)))
RETURN(rc);
}
- if (lo->ldo_stripenr == 0)
+ /* FIXME: a tricky case in the code path of mdd_layout_change():
+ * the in-memory striping information has been freed in lod_xattr_set()
+ * due to layout change. It has to load stripe here again. It only
+ * changes flags of layout so declare_attr_set() is still accurate */
+ rc = lod_striping_load(env, lo);
+ if (rc)
+ RETURN(rc);
+
+ if (!lod_obj_is_striped(dt))
RETURN(0);
/*
* if object is striped, apply changes to all the stripes
*/
- LASSERT(lo->ldo_stripe);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- if (unlikely(lo->ldo_stripe[i] == NULL))
- continue;
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ LASSERT(lo->ldo_stripe);
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ if (unlikely(lo->ldo_stripe[i] == NULL))
+ continue;
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
- (dt_object_exists(lo->ldo_stripe[i]) == 0))
- continue;
+ if ((dt_object_exists(lo->ldo_stripe[i]) == 0))
+ continue;
- rc = lod_sub_object_attr_set(env, lo->ldo_stripe[i], attr, th);
- if (rc != 0)
- break;
+ rc = lod_sub_attr_set(env, lo->ldo_stripe[i], attr, th);
+ if (rc != 0)
+ break;
+ }
+ } else {
+ struct lod_obj_stripe_cb_data data = { { 0 } };
+
+ data.locd_attr = attr;
+ data.locd_declare = false;
+ data.locd_comp_skip_cb = lod_obj_attr_set_comp_skip_cb;
+ data.locd_stripe_cb = lod_obj_stripe_attr_set_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_STRIPE) &&
- dt_object_exists(next) != 0 &&
- dt_object_remote(next) == 0)
- rc = lod_sub_object_xattr_del(env, next, XATTR_NAME_LOV, th);
+ if (rc)
+ RETURN(rc);
+
+ if (!dt_object_exists(next) || dt_object_remote(next) ||
+ !S_ISREG(attr->la_mode))
+ RETURN(0);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_STRIPE)) {
+ rc = lod_sub_xattr_del(env, next, XATTR_NAME_LOV, th);
+ RETURN(rc);
+ }
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CHANGE_STRIPE) &&
- dt_object_exists(next) &&
- dt_object_remote(next) == 0 && S_ISREG(attr->la_mode)) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CHANGE_STRIPE)) {
struct lod_thread_info *info = lod_env_info(env);
struct lu_buf *buf = &info->lti_buf;
struct ost_id *oi = &info->lti_ostid;
struct lov_mds_md_v1 *lmm;
struct lov_ost_data_v1 *objs;
__u32 magic;
- int rc1;
- rc1 = lod_get_lov_ea(env, lo);
- if (rc1 <= 0)
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
RETURN(rc);
buf->lb_buf = info->lti_ea_store;
buf->lb_len = info->lti_ea_store_size;
lmm = info->lti_ea_store;
magic = le32_to_cpu(lmm->lmm_magic);
+ if (magic == LOV_MAGIC_COMP_V1) {
+ struct lov_comp_md_v1 *lcm = buf->lb_buf;
+ struct lov_comp_md_entry_v1 *lcme =
+ &lcm->lcm_entries[0];
+
+ lmm = buf->lb_buf + le32_to_cpu(lcme->lcme_offset);
+ magic = le32_to_cpu(lmm->lmm_magic);
+ }
+
if (magic == LOV_MAGIC_V1)
objs = &(lmm->lmm_objects[0]);
else
fid_to_ostid(fid, oi);
ostid_cpu_to_le(oi, &objs->l_ost_oi);
- rc = lod_sub_object_xattr_set(env, next, buf, XATTR_NAME_LOV,
- LU_XATTR_REPLACE, th);
+ rc = lod_sub_xattr_set(env, next, buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, th);
+ } else if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_PFL_RANGE)) {
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_buf *buf = &info->lti_buf;
+ struct lov_comp_md_v1 *lcm;
+ struct lov_comp_md_entry_v1 *lcme;
+
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
+ RETURN(rc);
+
+ buf->lb_buf = info->lti_ea_store;
+ buf->lb_len = info->lti_ea_store_size;
+ lcm = buf->lb_buf;
+ if (le32_to_cpu(lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
+ RETURN(-EINVAL);
+
+ le32_add_cpu(&lcm->lcm_layout_gen, 1);
+ lcme = &lcm->lcm_entries[0];
+ le64_add_cpu(&lcme->lcme_extent.e_start, 1);
+ le64_add_cpu(&lcme->lcme_extent.e_end, -1);
+
+ rc = lod_sub_xattr_set(env, next, buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, th);
}
RETURN(rc);
static int lod_xattr_get(const struct lu_env *env, struct dt_object *dt,
struct lu_buf *buf, const char *name)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lod_device *dev = lu2lod_dev(dt->do_lu.lo_dev);
- int rc, is_root;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *dev = lu2lod_dev(dt->do_lu.lo_dev);
+ int is_root;
+ int rc;
ENTRY;
rc = dt_xattr_get(env, dt_object_child(dt), buf, name);
RETURN(rc);
/*
+ * XXX: Only used by lfsck
+ *
* lod returns default striping on the real root of the device
* this is like the root stores default striping for the whole
* filesystem. historically we've been using a different approach
ENTRY;
LASSERT(lo->ldo_dir_striped != 0);
- LASSERT(lo->ldo_stripenr > 0);
- stripe_count = lo->ldo_stripenr;
+ LASSERT(lo->ldo_dir_stripe_count > 0);
+ stripe_count = lo->ldo_dir_stripe_count;
/* Only store the LMV EA heahder on the disk. */
if (info->lti_ea_store_size < sizeof(*lmm1)) {
rc = lod_ea_store_resize(info, sizeof(*lmm1));
int rc = 0;
ENTRY;
+ LASSERT(mutex_is_locked(&lo->ldo_layout_mutex));
+
if (le32_to_cpu(lmv1->lmv_hash_type) & LMV_HASH_FLAG_MIGRATION)
RETURN(0);
}
out:
lo->ldo_stripe = stripe;
- lo->ldo_stripenr = le32_to_cpu(lmv1->lmv_stripe_count);
- lo->ldo_stripes_allocated = le32_to_cpu(lmv1->lmv_stripe_count);
+ lo->ldo_dir_stripe_count = le32_to_cpu(lmv1->lmv_stripe_count);
+ lo->ldo_dir_stripes_allocated = le32_to_cpu(lmv1->lmv_stripe_count);
if (rc != 0)
- lod_object_free_striping(env, lo);
+ lod_striping_free_nolock(env, lo);
RETURN(rc);
}
/**
- * Create a striped directory.
+ * Declare create a striped directory.
*
- * Create a striped directory with a given stripe pattern on the specified MDTs.
- * A striped directory is represented as a regular directory - an index listing
- * all the stripes. The stripes point back to the master object with ".." and
- * LinkEA. The master object gets LMV EA which identifies it as a striped
- * directory. The function allocates FIDs for all the stripes.
+ * Declare creating a striped directory with a given stripe pattern on the
+ * specified MDTs. A striped directory is represented as a regular directory
+ * - an index listing all the stripes. The stripes point back to the master
+ * object with ".." and LinkEA. The master object gets LMV EA which
+ * identifies it as a striped directory. The function allocates FIDs
+ * for all stripes.
*
* \param[in] env execution environment
* \param[in] dt object
* \param[in] attr attributes to initialize the objects with
- * \param[in] lum a pattern specifying the number of stripes and
- * MDT to start from
* \param[in] dof type of objects to be created
* \param[in] th transaction handle
*
GOTO(out, rc = -EINVAL);
rec->rec_type = S_IFDIR;
- for (i = 0; i < lo->ldo_stripenr; i++) {
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
struct dt_object *dto = lo->ldo_stripe[i];
char *stripe_name = info->lti_key;
struct lu_name *sname;
struct linkea_data ldata = { NULL };
struct lu_buf linkea_buf;
- rc = lod_sub_object_declare_create(env, dto, attr, NULL,
- dof, th);
+ rc = lod_sub_declare_create(env, dto, attr, NULL, dof, th);
if (rc != 0)
GOTO(out, rc);
if (!dt_try_as_dir(env, dto))
GOTO(out, rc = -EINVAL);
- rc = lod_sub_object_declare_ref_add(env, dto, th);
+ rc = lod_sub_declare_ref_add(env, dto, th);
if (rc != 0)
GOTO(out, rc);
rec->rec_fid = lu_object_fid(&dto->do_lu);
- rc = lod_sub_object_declare_insert(env, dto,
- (const struct dt_rec *)rec,
- (const struct dt_key *)dot, th);
+ rc = lod_sub_declare_insert(env, dto,
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th);
if (rc != 0)
GOTO(out, rc);
/* master stripe FID will be put to .. */
rec->rec_fid = lu_object_fid(&dt->do_lu);
- rc = lod_sub_object_declare_insert(env, dto,
- (const struct dt_rec *)rec,
- (const struct dt_key *)dotdot,
- th);
+ rc = lod_sub_declare_insert(env, dto,
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)dotdot, th);
if (rc != 0)
GOTO(out, rc);
else
slave_lmm->lmv_master_mdt_index =
cpu_to_le32(i);
- rc = lod_sub_object_declare_xattr_set(env, dto,
- &slave_lmv_buf, XATTR_NAME_LMV, 0, th);
+ rc = lod_sub_declare_xattr_set(env, dto, &slave_lmv_buf,
+ XATTR_NAME_LMV, 0, th);
if (rc != 0)
GOTO(out, rc);
}
PFID(lu_object_fid(&dto->do_lu)), i);
sname = lod_name_get(env, stripe_name, strlen(stripe_name));
- rc = linkea_data_new(&ldata, &info->lti_linkea_buf);
- if (rc != 0)
- GOTO(out, rc);
-
- rc = linkea_add_buf(&ldata, sname, lu_object_fid(&dt->do_lu));
+ rc = linkea_links_new(&ldata, &info->lti_linkea_buf,
+ sname, lu_object_fid(&dt->do_lu));
if (rc != 0)
GOTO(out, rc);
linkea_buf.lb_buf = ldata.ld_buf->lb_buf;
linkea_buf.lb_len = ldata.ld_leh->leh_len;
- rc = lod_sub_object_declare_xattr_set(env, dto, &linkea_buf,
- XATTR_NAME_LINK, 0, th);
+ rc = lod_sub_declare_xattr_set(env, dto, &linkea_buf,
+ XATTR_NAME_LINK, 0, th);
if (rc != 0)
GOTO(out, rc);
rec->rec_fid = lu_object_fid(&dto->do_lu);
- rc = lod_sub_object_declare_insert(env, dt_object_child(dt),
- (const struct dt_rec *)rec,
- (const struct dt_key *)stripe_name,
- th);
+ rc = lod_sub_declare_insert(env, dt_object_child(dt),
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)stripe_name,
+ th);
if (rc != 0)
GOTO(out, rc);
- rc = lod_sub_object_declare_ref_add(env, dt_object_child(dt),
- th);
+ rc = lod_sub_declare_ref_add(env, dt_object_child(dt), th);
if (rc != 0)
GOTO(out, rc);
}
- rc = lod_sub_object_declare_xattr_set(env, dt_object_child(dt),
- &lmv_buf, XATTR_NAME_LMV, 0, th);
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt),
+ &lmv_buf, XATTR_NAME_LMV, 0, th);
if (rc != 0)
GOTO(out, rc);
out:
struct dt_object **stripe;
__u32 stripe_count;
int *idx_array;
+ __u32 master_index;
int rc = 0;
__u32 i;
__u32 j;
+ bool is_specific = false;
ENTRY;
/* The lum has been verifed in lod_verify_md_striping */
- LASSERT(le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC);
+ LASSERT(le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC ||
+ le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC);
LASSERT(le32_to_cpu(lum->lum_stripe_count) > 0);
stripe_count = le32_to_cpu(lum->lum_stripe_count);
- /* shrink the stripe_count to the avaible MDT count */
- if (stripe_count > lod->lod_remote_mdt_count + 1)
- stripe_count = lod->lod_remote_mdt_count + 1;
+ OBD_ALLOC(idx_array, sizeof(idx_array[0]) * stripe_count);
+ if (idx_array == NULL)
+ RETURN(-ENOMEM);
OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_count);
if (stripe == NULL)
- RETURN(-ENOMEM);
-
- OBD_ALLOC(idx_array, sizeof(idx_array[0]) * stripe_count);
- if (idx_array == NULL)
GOTO(out_free, rc = -ENOMEM);
+ /* Start index must be the master MDT */
+ master_index = lu_site2seq(lod2lu_dev(lod)->ld_site)->ss_node_id;
+ idx_array[0] = master_index;
+ if (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC) {
+ is_specific = true;
+ for (i = 1; i < stripe_count; i++)
+ idx_array[i] = le32_to_cpu(lum->lum_objects[i].lum_mds);
+ }
+
for (i = 0; i < stripe_count; i++) {
struct lod_tgt_desc *tgt = NULL;
struct dt_object *dto;
struct lu_object_conf conf = { 0 };
struct dt_device *tgt_dt = NULL;
- if (i == 0) {
- /* Right now, master stripe and master object are
- * on the same MDT */
- idx = lu_site2seq(lod2lu_dev(lod)->ld_site)->ss_node_id;
- rc = obd_fid_alloc(env, lod->lod_child_exp, &fid,
- NULL);
- if (rc < 0)
- GOTO(out_put, rc);
- tgt_dt = lod->lod_child;
- goto next;
- }
-
- idx = (idx_array[i - 1] + 1) % (lod->lod_remote_mdt_count + 1);
-
+ /* Try to find next avaible target */
+ idx = idx_array[i];
for (j = 0; j < lod->lod_remote_mdt_count;
j++, idx = (idx + 1) % (lod->lod_remote_mdt_count + 1)) {
bool already_allocated = false;
__u32 k;
- CDEBUG(D_INFO, "try idx %d, mdt cnt %u,"
- " allocated %u, last allocated %d\n", idx,
- lod->lod_remote_mdt_count, i, idx_array[i - 1]);
-
- /* Find next available target */
- if (!cfs_bitmap_check(ltd->ltd_tgt_bitmap, idx))
- continue;
-
- /* check whether the idx already exists
- * in current allocated array */
- for (k = 0; k < i; k++) {
- if (idx_array[k] == idx) {
- already_allocated = true;
- break;
+ CDEBUG(D_INFO, "try idx %d, mdt cnt %u, allocated %u\n",
+ idx, lod->lod_remote_mdt_count + 1, i);
+
+ if (likely(!is_specific &&
+ !OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))) {
+ /* check whether the idx already exists
+ * in current allocated array */
+ for (k = 0; k < i; k++) {
+ if (idx_array[k] == idx) {
+ already_allocated = true;
+ break;
+ }
}
+
+ if (already_allocated)
+ continue;
}
- if (already_allocated)
+ /* Sigh, this index is not in the bitmap, let's check
+ * next available target */
+ if (!cfs_bitmap_check(ltd->ltd_tgt_bitmap, idx) &&
+ idx != master_index)
continue;
+ if (idx == master_index) {
+ /* Allocate the FID locally */
+ rc = obd_fid_alloc(env, lod->lod_child_exp,
+ &fid, NULL);
+ if (rc < 0)
+ GOTO(out_put, rc);
+ tgt_dt = lod->lod_child;
+ break;
+ }
+
/* check the status of the OSP */
tgt = LTD_TGT(ltd, idx);
if (tgt == NULL)
/* Can not allocate more stripes */
if (j == lod->lod_remote_mdt_count) {
CDEBUG(D_INFO, "%s: require stripes %u only get %d\n",
- lod2obd(lod)->obd_name, stripe_count, i - 1);
+ lod2obd(lod)->obd_name, stripe_count, i);
break;
}
- CDEBUG(D_INFO, "idx %d, mdt cnt %u,"
- " allocated %u, last allocated %d\n", idx,
- lod->lod_remote_mdt_count, i, idx_array[i - 1]);
-
-next:
+ CDEBUG(D_INFO, "Get idx %d, for stripe %d "DFID"\n",
+ idx, i, PFID(&fid));
+ idx_array[i] = idx;
+ /* Set the start index for next stripe allocation */
+ if (!is_specific && i < stripe_count - 1) {
+ /*
+ * for large dir test, put all other slaves on one
+ * remote MDT, otherwise we may save too many local
+ * slave locks which will exceed RS_MAX_LOCKS.
+ */
+ if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE)))
+ idx = master_index;
+ idx_array[i + 1] = (idx + 1) %
+ (lod->lod_remote_mdt_count + 1);
+ }
/* tgt_dt and fid must be ready after search avaible OSP
* in the above loop */
LASSERT(tgt_dt != NULL);
if (IS_ERR(dto))
GOTO(out_put, rc = PTR_ERR(dto));
stripe[i] = dto;
- idx_array[i] = idx;
}
lo->ldo_dir_striped = 1;
lo->ldo_stripe = stripe;
- lo->ldo_stripenr = i;
- lo->ldo_stripes_allocated = stripe_count;
+ lo->ldo_dir_stripe_count = i;
+ lo->ldo_dir_stripes_allocated = stripe_count;
+ smp_mb();
+ lo->ldo_dir_stripe_loaded = 1;
- if (lo->ldo_stripenr == 0)
+ if (lo->ldo_dir_stripe_count == 0)
GOTO(out_put, rc = -ENOSPC);
rc = lod_dir_declare_create_stripes(env, dt, attr, dof, th);
if (rc < 0) {
for (i = 0; i < stripe_count; 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_count);
- lo->ldo_stripenr = 0;
- lo->ldo_stripes_allocated = 0;
+ lo->ldo_dir_stripe_count = 0;
+ lo->ldo_dir_stripes_allocated = 0;
lo->ldo_stripe = NULL;
}
out_free:
- if (idx_array != NULL)
- OBD_FREE(idx_array, sizeof(idx_array[0]) * stripe_count);
+ OBD_FREE(idx_array, sizeof(idx_array[0]) * stripe_count);
RETURN(rc);
}
struct thandle *th)
{
struct lod_object *lo = lod_dt_obj(dt);
- struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
- struct lmv_user_md_v1 *lum;
+ struct lmv_user_md_v1 *lum = lum_buf->lb_buf;
int rc;
ENTRY;
- lum = lum_buf->lb_buf;
LASSERT(lum != NULL);
CDEBUG(D_INFO, "lum magic = %x count = %u offset = %d\n",
le32_to_cpu(lum->lum_magic), le32_to_cpu(lum->lum_stripe_count),
(int)le32_to_cpu(lum->lum_stripe_offset));
- if (le32_to_cpu(lum->lum_stripe_count) == 0)
+ if (lo->ldo_dir_stripe_count == 0)
GOTO(out, rc = 0);
- rc = lod_verify_md_striping(lod, lum);
- if (rc != 0)
- GOTO(out, rc);
-
/* prepare dir striped objects */
rc = lod_prep_md_striped_create(env, dt, attr, lum, dof, th);
if (rc != 0) {
/* failed to create striping, let's reset
* config so that others don't get confused */
- lod_object_free_striping(env, lo);
+ lod_striping_free(env, lo);
GOTO(out, rc);
}
out:
RETURN(rc);
}
-
/**
* Implementation of dt_object_operations::do_declare_xattr_set.
*
rc = lod_verify_md_striping(d, lum);
if (rc != 0)
RETURN(rc);
+ } else if (strcmp(name, XATTR_NAME_LOV) == 0) {
+ rc = lod_verify_striping(d, lo, buf, false);
+ if (rc != 0)
+ RETURN(rc);
}
- rc = lod_sub_object_declare_xattr_set(env, next, buf, name, fl, th);
- if (rc != 0)
- RETURN(rc);
-
- /* set xattr to each stripes, if needed */
- rc = lod_load_striping(env, lo);
+ rc = lod_sub_declare_xattr_set(env, next, buf, name, fl, th);
if (rc != 0)
RETURN(rc);
* it will confuse the fid2path process(see mdt_path_current()).
* The linkEA between master and sub-stripes is set in
* lod_xattr_set_lmv(). */
- if (lo->ldo_stripenr == 0 || strcmp(name, XATTR_NAME_LINK) == 0)
+ if (strcmp(name, XATTR_NAME_LINK) == 0)
RETURN(0);
- for (i = 0; i < lo->ldo_stripenr; i++) {
+ /* set xattr to each stripes, if needed */
+ rc = lod_striping_load(env, lo);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (lo->ldo_dir_stripe_count == 0)
+ RETURN(0);
+
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
LASSERT(lo->ldo_stripe[i]);
- rc = lod_sub_object_declare_xattr_set(env, lo->ldo_stripe[i],
- buf, name, fl, th);
+ rc = lod_sub_declare_xattr_set(env, lo->ldo_stripe[i],
+ buf, name, fl, th);
if (rc != 0)
break;
}
RETURN(rc);
}
-/**
- * Implementation of dt_object_operations::do_declare_xattr_set.
- *
- * \see dt_object_operations::do_declare_xattr_set() in the API description
- * for details.
- *
- * the extension to the API:
- * - declaring LOVEA requests striping creation
- * - LU_XATTR_REPLACE means layout swap
- */
-static int lod_declare_xattr_set(const struct lu_env *env,
- struct dt_object *dt,
- const struct lu_buf *buf,
- const char *name, int fl,
- struct thandle *th)
+static int
+lod_obj_stripe_replace_parent_fid_cb(const struct lu_env *env,
+ struct lod_object *lo,
+ struct dt_object *dt, struct thandle *th,
+ int comp_idx, int stripe_idx,
+ struct lod_obj_stripe_cb_data *data)
{
- struct dt_object *next = dt_object_child(dt);
- struct lu_attr *attr = &lod_env_info(env)->lti_attr;
- __u32 mode;
- int rc;
- ENTRY;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *comp = &lo->ldo_comp_entries[comp_idx];
+ struct filter_fid *ff = &info->lti_ff;
+ struct lu_buf *buf = &info->lti_buf;
+ int rc;
- /*
- * allow to declare predefined striping on a new (!mode) object
- * which is supposed to be replay of regular file creation
- * (when LOV setting is declared)
- * LU_XATTR_REPLACE is set to indicate a layout swap
- */
- mode = dt->do_lu.lo_header->loh_attr & S_IFMT;
- if ((S_ISREG(mode) || mode == 0) && strcmp(name, XATTR_NAME_LOV) == 0 &&
- !(fl & LU_XATTR_REPLACE)) {
- /*
- * this is a request to manipulate object's striping
- */
- if (dt_object_exists(dt)) {
- rc = dt_attr_get(env, next, attr);
- if (rc)
- RETURN(rc);
- } else {
- memset(attr, 0, sizeof(*attr));
- attr->la_valid = LA_TYPE | LA_MODE;
- attr->la_mode = S_IFREG;
- }
- rc = lod_declare_striped_object(env, dt, attr, buf, th);
- } else if (S_ISDIR(mode)) {
- rc = lod_dir_declare_xattr_set(env, dt, buf, name, fl, th);
- } else {
- rc = lod_sub_object_declare_xattr_set(env, next, buf, name,
- fl, th);
+ buf->lb_buf = ff;
+ buf->lb_len = sizeof(*ff);
+ rc = dt_xattr_get(env, dt, buf, XATTR_NAME_FID);
+ if (rc < 0) {
+ if (rc == -ENODATA)
+ return 0;
+ return rc;
}
- RETURN(rc);
-}
+ filter_fid_le_to_cpu(ff, ff, sizeof(*ff));
+ if (lu_fid_eq(lu_object_fid(&lo->ldo_obj.do_lu), &ff->ff_parent) &&
+ ff->ff_layout.ol_comp_id == comp->llc_id)
+ return 0;
+
+ /* rewrite filter_fid */
+ memset(ff, 0, sizeof(*ff));
+ ff->ff_parent = *lu_object_fid(&lo->ldo_obj.do_lu);
+ ff->ff_parent.f_ver = stripe_idx;
+ ff->ff_layout.ol_stripe_size = comp->llc_stripe_size;
+ ff->ff_layout.ol_stripe_count = comp->llc_stripe_count;
+ ff->ff_layout.ol_comp_id = comp->llc_id;
+ ff->ff_layout.ol_comp_start = comp->llc_extent.e_start;
+ ff->ff_layout.ol_comp_end = comp->llc_extent.e_end;
+ filter_fid_cpu_to_le(ff, ff, sizeof(*ff));
+
+ if (data->locd_declare)
+ rc = lod_sub_declare_xattr_set(env, dt, buf, XATTR_NAME_FID,
+ LU_XATTR_REPLACE, th);
+ else
+ rc = lod_sub_xattr_set(env, dt, buf, XATTR_NAME_FID,
+ LU_XATTR_REPLACE, th);
-/**
- * Resets cached default striping in the object.
- *
- * \param[in] lo object
- */
-static void lod_lov_stripe_cache_clear(struct lod_object *lo)
-{
- lo->ldo_def_striping_set = 0;
- lo->ldo_def_striping_cached = 0;
- lod_object_set_pool(lo, NULL);
- lo->ldo_def_stripe_size = 0;
- lo->ldo_def_stripenr = 0;
- if (lo->ldo_dir_stripe != NULL)
- lo->ldo_dir_def_striping_cached = 0;
+ return rc;
}
/**
- * Apply xattr changes to the object.
+ * Reset parent FID on OST object
*
- * Applies xattr changes to the object and the stripes if the latter exist.
+ * Replace parent FID with @dt object FID, which is only called during migration
+ * to reset the parent FID after the MDT object is migrated to the new MDT, i.e.
+ * the FID is changed.
*
- * \param[in] env execution environment
- * \param[in] dt object
- * \param[in] buf buffer pointing to the new value of xattr
- * \param[in] name name of xattr
- * \param[in] fl flags
- * \param[in] th transaction handle
+ * \param[in] env execution environment
+ * \param[in] dt dt_object whose stripes's parent FID will be reset
+ * \parem[in] th thandle
+ * \param[in] declare if it is declare
*
- * \retval 0 on success
- * \retval negative if failed
+ * \retval 0 if reset succeeds
+ * \retval negative errno if reset fails
*/
-static int lod_xattr_set_internal(const struct lu_env *env,
+static int lod_replace_parent_fid(const struct lu_env *env,
struct dt_object *dt,
- const struct lu_buf *buf,
- const char *name, int fl, struct thandle *th)
+ struct thandle *th, bool declare)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
- int i;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_buf *buf = &info->lti_buf;
+ struct filter_fid *ff;
+ struct lod_obj_stripe_cb_data data = { { 0 } };
+ int rc;
ENTRY;
- rc = lod_sub_object_xattr_set(env, next, buf, name, fl, th);
- if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ LASSERT(S_ISREG(dt->do_lu.lo_header->loh_attr));
+
+ /* set xattr to each stripes, if needed */
+ rc = lod_striping_load(env, lo);
+ if (rc != 0)
RETURN(rc);
- /* Note: Do not set LinkEA on sub-stripes, otherwise
- * it will confuse the fid2path process(see mdt_path_current()).
- * The linkEA between master and sub-stripes is set in
- * lod_xattr_set_lmv(). */
- if (lo->ldo_stripenr == 0 || strcmp(name, XATTR_NAME_LINK) == 0)
+ if (!lod_obj_is_striped(dt))
RETURN(0);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
-
- rc = lod_sub_object_xattr_set(env, lo->ldo_stripe[i], buf, name,
- fl, th);
+ if (info->lti_ea_store_size < sizeof(*ff)) {
+ rc = lod_ea_store_resize(info, sizeof(*ff));
if (rc != 0)
- break;
+ RETURN(rc);
}
+ buf->lb_buf = info->lti_ea_store;
+ buf->lb_len = info->lti_ea_store_size;
+
+ data.locd_declare = declare;
+ data.locd_stripe_cb = lod_obj_stripe_replace_parent_fid_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
+
RETURN(rc);
}
+inline __u16 lod_comp_entry_stripe_count(struct lod_object *lo,
+ struct lod_layout_component *entry,
+ bool is_dir)
+{
+ struct lod_device *lod = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
+
+ if (is_dir)
+ return 0;
+ else if (lod_comp_inited(entry))
+ return entry->llc_stripe_count;
+ else if ((__u16)-1 == entry->llc_stripe_count)
+ return lod->lod_desc.ld_tgt_count;
+ else
+ return lod_get_stripe_count(lod, lo, entry->llc_stripe_count);
+}
+
+static int lod_comp_md_size(struct lod_object *lo, bool is_dir)
+{
+ int magic, size = 0, i;
+ struct lod_layout_component *comp_entries;
+ __u16 comp_cnt;
+ bool is_composite;
+
+ 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(comp_cnt != 0 && comp_entries != NULL);
+ if (is_composite) {
+ size = sizeof(struct lov_comp_md_v1) +
+ sizeof(struct lov_comp_md_entry_v1) * comp_cnt;
+ LASSERT(size % sizeof(__u64) == 0);
+ }
+
+ for (i = 0; i < comp_cnt; i++) {
+ __u16 stripe_count;
+
+ magic = comp_entries[i].llc_pool ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
+ stripe_count = lod_comp_entry_stripe_count(lo, &comp_entries[i],
+ is_dir);
+ if (!is_dir && is_composite)
+ lod_comp_shrink_stripe_count(&comp_entries[i],
+ &stripe_count);
+
+ size += lov_user_md_size(stripe_count, magic);
+ LASSERT(size % sizeof(__u64) == 0);
+ }
+ return size;
+}
+
/**
- * Delete an extended attribute.
- *
- * Deletes specified xattr from the object and the stripes if the latter exist.
- *
+ * Declare component add. The xattr name is XATTR_LUSTRE_LOV.add, and
+ * the xattr value is binary lov_comp_md_v1 which contains component(s)
+ * to be added.
+ *
* \param[in] env execution environment
- * \param[in] dt object
- * \param[in] name name of xattr
- * \param[in] th transaction handle
+ * \param[in] dt dt_object to add components on
+ * \param[in] buf buffer contains components to be added
+ * \parem[in] th thandle
*
- * \retval 0 on success
- * \retval negative if failed
+ * \retval 0 on success
+ * \retval negative errno on failure
*/
-static int lod_xattr_del_internal(const struct lu_env *env,
+static int lod_declare_layout_add(const struct lu_env *env,
struct dt_object *dt,
- const char *name, struct thandle *th)
+ const struct lu_buf *buf,
+ struct thandle *th)
{
- struct dt_object *next = dt_object_child(dt);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *comp_array, *lod_comp, *old_array;
+ struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
+ struct dt_object *next = dt_object_child(dt);
+ struct lov_desc *desc = &d->lod_desc;
struct lod_object *lo = lod_dt_obj(dt);
- int rc;
- int i;
+ struct lov_user_md_v3 *v3;
+ struct lov_comp_md_v1 *comp_v1 = buf->lb_buf;
+ __u32 magic;
+ int i, rc, array_cnt, old_array_cnt;
ENTRY;
- rc = lod_sub_object_xattr_del(env, next, name, th);
- if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(rc);
+ LASSERT(lo->ldo_is_composite);
- if (lo->ldo_stripenr == 0)
+ if (lo->ldo_flr_state != LCM_FL_NONE)
+ RETURN(-EBUSY);
+
+ rc = lod_verify_striping(d, lo, buf, false);
+ if (rc != 0)
RETURN(rc);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
+ magic = comp_v1->lcm_magic;
+ if (magic == __swab32(LOV_USER_MAGIC_COMP_V1)) {
+ lustre_swab_lov_comp_md_v1(comp_v1);
+ magic = comp_v1->lcm_magic;
+ }
- rc = lod_sub_object_xattr_del(env, lo->ldo_stripe[i], name,
- th);
- if (rc != 0)
- break;
+ if (magic != LOV_USER_MAGIC_COMP_V1)
+ RETURN(-EINVAL);
+
+ array_cnt = lo->ldo_comp_cnt + comp_v1->lcm_entry_count;
+ OBD_ALLOC(comp_array, sizeof(*comp_array) * array_cnt);
+ if (comp_array == NULL)
+ RETURN(-ENOMEM);
+
+ memcpy(comp_array, lo->ldo_comp_entries,
+ sizeof(*comp_array) * lo->ldo_comp_cnt);
+
+ for (i = 0; i < comp_v1->lcm_entry_count; i++) {
+ struct lov_user_md_v1 *v1;
+ struct lu_extent *ext;
+
+ v1 = (struct lov_user_md *)((char *)comp_v1 +
+ comp_v1->lcm_entries[i].lcme_offset);
+ ext = &comp_v1->lcm_entries[i].lcme_extent;
+
+ lod_comp = &comp_array[lo->ldo_comp_cnt + i];
+ lod_comp->llc_extent.e_start = ext->e_start;
+ lod_comp->llc_extent.e_end = ext->e_end;
+ lod_comp->llc_stripe_offset = v1->lmm_stripe_offset;
+ lod_comp->llc_flags = comp_v1->lcm_entries[i].lcme_flags;
+
+ lod_comp->llc_stripe_count = v1->lmm_stripe_count;
+ lod_comp->llc_stripe_size = v1->lmm_stripe_size;
+ lod_adjust_stripe_info(lod_comp, desc);
+
+ if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
+ v3 = (struct lov_user_md_v3 *) v1;
+ if (v3->lmm_pool_name[0] != '\0') {
+ rc = lod_set_pool(&lod_comp->llc_pool,
+ v3->lmm_pool_name);
+ if (rc)
+ GOTO(error, rc);
+ }
+ }
}
+ old_array = lo->ldo_comp_entries;
+ old_array_cnt = lo->ldo_comp_cnt;
+
+ lo->ldo_comp_entries = comp_array;
+ lo->ldo_comp_cnt = array_cnt;
+
+ /* No need to increase layout generation here, it will be increased
+ * later when generating component ID for the new components */
+
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ rc = lod_sub_declare_xattr_set(env, next, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
+ if (rc) {
+ lo->ldo_comp_entries = old_array;
+ lo->ldo_comp_cnt = old_array_cnt;
+ GOTO(error, rc);
+ }
+
+ OBD_FREE(old_array, sizeof(*lod_comp) * old_array_cnt);
+
+ LASSERT(lo->ldo_mirror_count == 1);
+ lo->ldo_mirrors[0].lme_end = array_cnt - 1;
+
+ RETURN(0);
+
+error:
+ for (i = lo->ldo_comp_cnt; i < array_cnt; i++) {
+ lod_comp = &comp_array[i];
+ if (lod_comp->llc_pool != NULL) {
+ OBD_FREE(lod_comp->llc_pool,
+ strlen(lod_comp->llc_pool) + 1);
+ lod_comp->llc_pool = NULL;
+ }
+ }
+ OBD_FREE(comp_array, sizeof(*comp_array) * array_cnt);
RETURN(rc);
}
/**
- * Set default striping on a directory.
- *
- * Sets specified striping on a directory object unless it matches the default
- * striping (LOVEA_DELETE_VALUES() macro). In the latter case remove existing
- * EA. This striping will be used when regular file is being created in this
- * directory.
+ * Declare component set. The xattr is name XATTR_LUSTRE_LOV.set.$field,
+ * the '$field' can only be 'flags' now. The xattr value is binary
+ * lov_comp_md_v1 which contains the component ID(s) and the value of
+ * the field to be modified.
*
* \param[in] env execution environment
- * \param[in] dt the striped object
- * \param[in] buf buffer with the striping
- * \param[in] name name of EA
- * \param[in] fl xattr flag (see OSD API description)
- * \param[in] th transaction handle
+ * \param[in] dt dt_object to be modified
+ * \param[in] op operation string, like "set.flags"
+ * \param[in] buf buffer contains components to be set
+ * \parem[in] th thandle
*
- * \retval 0 on success
- * \retval negative if failed
+ * \retval 0 on success
+ * \retval negative errno on failure
*/
-static int lod_xattr_set_lov_on_dir(const struct lu_env *env,
- struct dt_object *dt,
- const struct lu_buf *buf,
- const char *name, int fl,
- struct thandle *th)
+static int lod_declare_layout_set(const struct lu_env *env,
+ struct dt_object *dt,
+ char *op, const struct lu_buf *buf,
+ struct thandle *th)
{
+ struct lod_layout_component *lod_comp;
+ struct lod_thread_info *info = lod_env_info(env);
struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
- struct lod_object *l = lod_dt_obj(dt);
- struct lov_user_md_v1 *lum;
- struct lov_user_md_v3 *v3 = NULL;
- const char *pool_name = NULL;
- int rc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lov_comp_md_v1 *comp_v1 = buf->lb_buf;
+ __u32 magic;
+ int i, j, rc;
+ bool changed = false;
ENTRY;
- /* If it is striped dir, we should clear the stripe cache for
- * slave stripe as well, but there are no effective way to
- * notify the LOD on the slave MDT, so we do not cache stripe
- * information for slave stripe for now. XXX*/
- lod_lov_stripe_cache_clear(l);
- LASSERT(buf != NULL && buf->lb_buf != NULL);
- lum = buf->lb_buf;
+ if (strcmp(op, "set.flags") != 0) {
+ CDEBUG(D_LAYOUT, "%s: operation (%s) not supported.\n",
+ lod2obd(d)->obd_name, op);
+ RETURN(-ENOTSUPP);
+ }
- rc = lod_verify_striping(d, buf, false);
- if (rc)
- RETURN(rc);
+ magic = comp_v1->lcm_magic;
+ if (magic == __swab32(LOV_USER_MAGIC_COMP_V1)) {
+ lustre_swab_lov_comp_md_v1(comp_v1);
+ magic = comp_v1->lcm_magic;
+ }
- if (lum->lmm_magic == LOV_USER_MAGIC_V3) {
- v3 = buf->lb_buf;
- if (v3->lmm_pool_name[0] != '\0')
- pool_name = v3->lmm_pool_name;
+ if (magic != LOV_USER_MAGIC_COMP_V1)
+ RETURN(-EINVAL);
+
+ if (comp_v1->lcm_entry_count == 0) {
+ CDEBUG(D_LAYOUT, "%s: entry count is zero.\n",
+ lod2obd(d)->obd_name);
+ RETURN(-EINVAL);
}
- /* if { size, offset, count } = { 0, -1, 0 } and no pool
- * (i.e. all default values specified) then delete default
- * striping from dir. */
- CDEBUG(D_OTHER,
- "set default striping: sz %u # %u offset %d %s %s\n",
- (unsigned)lum->lmm_stripe_size,
- (unsigned)lum->lmm_stripe_count,
- (int)lum->lmm_stripe_offset,
- v3 ? "from" : "", v3 ? v3->lmm_pool_name : "");
+ for (i = 0; i < comp_v1->lcm_entry_count; i++) {
+ __u32 id = comp_v1->lcm_entries[i].lcme_id;
+ __u32 flags = comp_v1->lcm_entries[i].lcme_flags;
- if (LOVEA_DELETE_VALUES(lum->lmm_stripe_size, lum->lmm_stripe_count,
- lum->lmm_stripe_offset, pool_name)) {
- rc = lod_xattr_del_internal(env, dt, name, th);
- if (rc == -ENODATA)
- rc = 0;
- } else {
- rc = lod_xattr_set_internal(env, dt, buf, name, fl, th);
+ if (flags & LCME_FL_INIT) {
+ if (changed)
+ lod_striping_free(env, lo);
+ RETURN(-EINVAL);
+ }
+
+ for (j = 0; j < lo->ldo_comp_cnt; j++) {
+ lod_comp = &lo->ldo_comp_entries[j];
+ if (id != lod_comp->llc_id)
+ continue;
+
+ if (flags & LCME_FL_NEG) {
+ flags &= ~LCME_FL_NEG;
+ lod_comp->llc_flags &= ~flags;
+ } else {
+ lod_comp->llc_flags |= flags;
+ }
+ changed = true;
+ }
}
+ if (!changed) {
+ CDEBUG(D_LAYOUT, "%s: requested component(s) not found.\n",
+ lod2obd(d)->obd_name);
+ RETURN(-EINVAL);
+ }
+
+ lod_obj_inc_layout_gen(lo);
+
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt), &info->lti_buf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE, th);
RETURN(rc);
}
/**
- * Set default striping on a directory object.
- *
- * Sets specified striping on a directory object unless it matches the default
- * striping (LOVEA_DELETE_VALUES() macro). In the latter case remove existing
- * EA. This striping will be used when a new directory is being created in the
- * directory.
+ * Declare component deletion. The xattr name is XATTR_LUSTRE_LOV.del,
+ * and the xattr value is a unique component ID or a special lcme_id.
*
* \param[in] env execution environment
- * \param[in] dt the striped object
- * \param[in] buf buffer with the striping
- * \param[in] name name of EA
- * \param[in] fl xattr flag (see OSD API description)
- * \param[in] th transaction handle
+ * \param[in] dt dt_object to be operated on
+ * \param[in] buf buffer contains component ID or lcme_id
+ * \parem[in] th thandle
*
- * \retval 0 on success
- * \retval negative if failed
+ * \retval 0 on success
+ * \retval negative errno on failure
*/
-static int lod_xattr_set_default_lmv_on_dir(const struct lu_env *env,
- struct dt_object *dt,
- const struct lu_buf *buf,
- const char *name, int fl,
- struct thandle *th)
+static int lod_declare_layout_del(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ struct thandle *th)
{
- struct lod_object *l = lod_dt_obj(dt);
- struct lmv_user_md_v1 *lum;
- int rc;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ struct lov_comp_md_v1 *comp_v1 = buf->lb_buf;
+ __u32 magic, id, flags, neg_flags = 0;
+ int rc, i, j, left;
ENTRY;
- LASSERT(buf != NULL && buf->lb_buf != NULL);
- lum = buf->lb_buf;
+ LASSERT(lo->ldo_is_composite);
- CDEBUG(D_OTHER, "set default stripe_count # %u stripe_offset %d\n",
- le32_to_cpu(lum->lum_stripe_count),
- (int)le32_to_cpu(lum->lum_stripe_offset));
+ if (lo->ldo_flr_state != LCM_FL_NONE)
+ RETURN(-EBUSY);
- if (LMVEA_DELETE_VALUES((le32_to_cpu(lum->lum_stripe_count)),
- le32_to_cpu(lum->lum_stripe_offset)) &&
- le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC) {
- rc = lod_xattr_del_internal(env, dt, name, th);
- if (rc == -ENODATA)
- rc = 0;
- } else {
- rc = lod_xattr_set_internal(env, dt, buf, name, fl, th);
- if (rc != 0)
- RETURN(rc);
+ magic = comp_v1->lcm_magic;
+ if (magic == __swab32(LOV_USER_MAGIC_COMP_V1)) {
+ lustre_swab_lov_comp_md_v1(comp_v1);
+ magic = comp_v1->lcm_magic;
}
- /* Update default stripe cache */
- if (l->ldo_dir_stripe == NULL) {
- OBD_ALLOC_PTR(l->ldo_dir_stripe);
- if (l->ldo_dir_stripe == NULL)
- RETURN(-ENOMEM);
+ if (magic != LOV_USER_MAGIC_COMP_V1)
+ RETURN(-EINVAL);
+
+ id = comp_v1->lcm_entries[0].lcme_id;
+ flags = comp_v1->lcm_entries[0].lcme_flags;
+
+ if (id > LCME_ID_MAX || (flags & ~LCME_KNOWN_FLAGS)) {
+ CDEBUG(D_LAYOUT, "%s: invalid component id %#x, flags %#x\n",
+ lod2obd(d)->obd_name, id, flags);
+ RETURN(-EINVAL);
+ }
+
+ if (id != LCME_ID_INVAL && flags != 0) {
+ CDEBUG(D_LAYOUT, "%s: specified both id and flags.\n",
+ lod2obd(d)->obd_name);
+ RETURN(-EINVAL);
+ }
+
+ if (id == LCME_ID_INVAL && !flags) {
+ CDEBUG(D_LAYOUT, "%s: no id or flags specified.\n",
+ lod2obd(d)->obd_name);
+ RETURN(-EINVAL);
+ }
+
+ if (flags & LCME_FL_NEG) {
+ neg_flags = flags & ~LCME_FL_NEG;
+ flags = 0;
+ }
+
+ left = lo->ldo_comp_cnt;
+ if (left <= 0)
+ RETURN(-EINVAL);
+
+ for (i = (lo->ldo_comp_cnt - 1); i >= 0; i--) {
+ struct lod_layout_component *lod_comp;
+
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (id != LCME_ID_INVAL && id != lod_comp->llc_id)
+ continue;
+ else if (flags && !(flags & lod_comp->llc_flags))
+ continue;
+ else if (neg_flags && (neg_flags & lod_comp->llc_flags))
+ continue;
+
+ if (left != (i + 1)) {
+ CDEBUG(D_LAYOUT, "%s: this deletion will create "
+ "a hole.\n", lod2obd(d)->obd_name);
+ RETURN(-EINVAL);
+ }
+ left--;
+
+ /* Mark the component as deleted */
+ lod_comp->llc_id = LCME_ID_INVAL;
+
+ /* Not instantiated component */
+ if (lod_comp->llc_stripe == NULL)
+ continue;
+
+ LASSERT(lod_comp->llc_stripe_count > 0);
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ struct dt_object *obj = lod_comp->llc_stripe[j];
+
+ if (obj == NULL)
+ continue;
+ rc = lod_sub_declare_destroy(env, obj, th);
+ if (rc)
+ RETURN(rc);
+ }
+ }
+
+ LASSERTF(left >= 0, "left = %d\n", left);
+ if (left == lo->ldo_comp_cnt) {
+ CDEBUG(D_LAYOUT, "%s: requested component id:%#x not found\n",
+ lod2obd(d)->obd_name, id);
+ RETURN(-EINVAL);
+ }
+
+ memset(attr, 0, sizeof(*attr));
+ attr->la_valid = LA_SIZE;
+ rc = lod_sub_declare_attr_set(env, next, attr, th);
+ if (rc)
+ RETURN(rc);
+
+ if (left > 0) {
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ rc = lod_sub_declare_xattr_set(env, next, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
+ } else {
+ rc = lod_sub_declare_xattr_del(env, next, XATTR_NAME_LOV, th);
}
- l->ldo_dir_def_striping_cached = 0;
RETURN(rc);
}
/**
- * Turn directory into a striped directory.
+ * Declare layout add/set/del operations issued by special xattr names:
*
- * During replay the client sends the striping created before MDT
- * failure, then the layer above LOD sends this defined striping
- * using ->do_xattr_set(), so LOD uses this method to replay creation
- * of the stripes. Notice the original information for the striping
- * (#stripes, FIDs, etc) was transferred in declare path.
+ * XATTR_LUSTRE_LOV.add add component(s) to existing file
+ * XATTR_LUSTRE_LOV.del delete component(s) from existing file
+ * XATTR_LUSTRE_LOV.set.$field set specified field of certain component(s)
*
* \param[in] env execution environment
- * \param[in] dt the striped object
- * \param[in] buf not used currently
- * \param[in] name not used currently
- * \param[in] fl xattr flag (see OSD API description)
+ * \param[in] dt object
+ * \param[in] name name of xattr
+ * \param[in] buf lu_buf contains xattr value
* \param[in] th transaction handle
*
* \retval 0 on success
* \retval negative if failed
*/
-static int lod_xattr_set_lmv(const struct lu_env *env, struct dt_object *dt,
- const struct lu_buf *buf, const char *name,
- int fl, struct thandle *th)
+static int lod_declare_modify_layout(const struct lu_env *env,
+ struct dt_object *dt,
+ const char *name,
+ const struct lu_buf *buf,
+ struct thandle *th)
{
- struct lod_object *lo = lod_dt_obj(dt);
- struct lod_thread_info *info = lod_env_info(env);
- struct lu_attr *attr = &info->lti_attr;
- struct dt_object_format *dof = &info->lti_format;
- struct lu_buf lmv_buf;
- struct lu_buf slave_lmv_buf;
- struct lmv_mds_md_v1 *lmm;
- struct lmv_mds_md_v1 *slave_lmm = NULL;
- struct dt_insert_rec *rec = &info->lti_dt_rec;
- int i;
- int rc;
+ struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_object *lo = lod_dt_obj(dt);
+ char *op;
+ int rc, len = strlen(XATTR_LUSTRE_LOV);
ENTRY;
- if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(-ENOTDIR);
+ LASSERT(dt_object_exists(dt));
- /* The stripes are supposed to be allocated in declare phase,
- * if there are no stripes being allocated, it will skip */
- if (lo->ldo_stripenr == 0)
- RETURN(0);
+ if (strlen(name) <= len || name[len] != '.') {
+ CDEBUG(D_LAYOUT, "%s: invalid xattr name: %s\n",
+ lod2obd(d)->obd_name, name);
+ RETURN(-EINVAL);
+ }
+ len++;
+
+ rc = lod_striping_load(env, lo);
+ if (rc)
+ GOTO(unlock, rc);
+
+ /* the layout to be modified must be a composite layout */
+ if (!lo->ldo_is_composite) {
+ CDEBUG(D_LAYOUT, "%s: object "DFID" isn't a composite file.\n",
+ lod2obd(d)->obd_name, PFID(lu_object_fid(&dt->do_lu)));
+ GOTO(unlock, rc = -EINVAL);
+ }
+
+ op = (char *)name + len;
+ if (strcmp(op, "add") == 0) {
+ rc = lod_declare_layout_add(env, dt, buf, th);
+ } else if (strcmp(op, "del") == 0) {
+ rc = lod_declare_layout_del(env, dt, buf, th);
+ } else if (strncmp(op, "set", strlen("set")) == 0) {
+ rc = lod_declare_layout_set(env, dt, op, buf, th);
+ } else {
+ CDEBUG(D_LAYOUT, "%s: unsupported xattr name:%s\n",
+ lod2obd(d)->obd_name, name);
+ GOTO(unlock, rc = -ENOTSUPP);
+ }
+unlock:
+ if (rc)
+ lod_striping_free(env, lo);
+
+ RETURN(rc);
+}
+
+/**
+ * Convert a plain file lov_mds_md to a composite layout.
+ *
+ * \param[in,out] info the thread info::lti_ea_store buffer contains little
+ * endian plain file layout
+ *
+ * \retval 0 on success, <0 on failure
+ */
+static int lod_layout_convert(struct lod_thread_info *info)
+{
+ struct lov_mds_md *lmm = info->lti_ea_store;
+ struct lov_mds_md *lmm_save;
+ struct lov_comp_md_v1 *lcm;
+ struct lov_comp_md_entry_v1 *lcme;
+ size_t size;
+ __u32 blob_size;
+ int rc = 0;
+ ENTRY;
+
+ /* realloc buffer to a composite layout which contains one component */
+ blob_size = lov_mds_md_size(le16_to_cpu(lmm->lmm_stripe_count),
+ le32_to_cpu(lmm->lmm_magic));
+ size = sizeof(*lcm) + sizeof(*lcme) + blob_size;
+
+ OBD_ALLOC_LARGE(lmm_save, blob_size);
+ if (!lmm_save)
+ GOTO(out, rc = -ENOMEM);
+
+ memcpy(lmm_save, lmm, blob_size);
+
+ if (info->lti_ea_store_size < size) {
+ rc = lod_ea_store_resize(info, size);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ lcm = info->lti_ea_store;
+ lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
+ lcm->lcm_size = cpu_to_le32(size);
+ lcm->lcm_layout_gen = cpu_to_le32(le16_to_cpu(
+ lmm_save->lmm_layout_gen));
+ lcm->lcm_flags = cpu_to_le16(LCM_FL_NONE);
+ lcm->lcm_entry_count = cpu_to_le16(1);
+ lcm->lcm_mirror_count = 0;
+
+ lcme = &lcm->lcm_entries[0];
+ lcme->lcme_flags = cpu_to_le32(LCME_FL_INIT);
+ lcme->lcme_extent.e_start = 0;
+ lcme->lcme_extent.e_end = cpu_to_le64(OBD_OBJECT_EOF);
+ lcme->lcme_offset = cpu_to_le32(sizeof(*lcm) + sizeof(*lcme));
+ lcme->lcme_size = cpu_to_le32(blob_size);
+
+ memcpy((char *)lcm + lcme->lcme_offset, (char *)lmm_save, blob_size);
+
+ EXIT;
+out:
+ if (lmm_save)
+ OBD_FREE_LARGE(lmm_save, blob_size);
+ return rc;
+}
+
+/**
+ * Merge layouts to form a mirrored file.
+ */
+static int lod_declare_layout_merge(const struct lu_env *env,
+ struct dt_object *dt, const struct lu_buf *mbuf,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_buf *buf = &info->lti_buf;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lov_comp_md_v1 *lcm;
+ struct lov_comp_md_v1 *cur_lcm;
+ struct lov_comp_md_v1 *merge_lcm;
+ struct lov_comp_md_entry_v1 *lcme;
+ size_t size = 0;
+ size_t offset;
+ __u16 cur_entry_count;
+ __u16 merge_entry_count;
+ __u32 id = 0;
+ __u16 mirror_id = 0;
+ __u32 mirror_count;
+ int rc, i;
+ ENTRY;
+
+ merge_lcm = mbuf->lb_buf;
+ if (mbuf->lb_len < sizeof(*merge_lcm))
+ RETURN(-EINVAL);
+
+ /* must be an existing layout from disk */
+ if (le32_to_cpu(merge_lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
+ RETURN(-EINVAL);
+
+ merge_entry_count = le16_to_cpu(merge_lcm->lcm_entry_count);
+
+ /* do not allow to merge two mirrored files */
+ if (le16_to_cpu(merge_lcm->lcm_mirror_count))
+ RETURN(-EBUSY);
+
+ /* verify the target buffer */
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
+ RETURN(rc ? : -ENODATA);
+
+ cur_lcm = info->lti_ea_store;
+ switch (le32_to_cpu(cur_lcm->lcm_magic)) {
+ case LOV_MAGIC_V1:
+ case LOV_MAGIC_V3:
+ rc = lod_layout_convert(info);
+ break;
+ case LOV_MAGIC_COMP_V1:
+ rc = 0;
+ break;
+ default:
+ rc = -EINVAL;
+ }
+ if (rc)
+ RETURN(rc);
+
+ /* info->lti_ea_store could be reallocated in lod_layout_convert() */
+ cur_lcm = info->lti_ea_store;
+ cur_entry_count = le16_to_cpu(cur_lcm->lcm_entry_count);
+
+ /* 'lcm_mirror_count + 1' is the current # of mirrors the file has */
+ mirror_count = le16_to_cpu(cur_lcm->lcm_mirror_count) + 1;
+ if (mirror_count + 1 > LUSTRE_MIRROR_COUNT_MAX)
+ RETURN(-ERANGE);
+
+ /* size of new layout */
+ size = le32_to_cpu(cur_lcm->lcm_size) +
+ le32_to_cpu(merge_lcm->lcm_size) - sizeof(*cur_lcm);
+
+ memset(buf, 0, sizeof(*buf));
+ lu_buf_alloc(buf, size);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+
+ lcm = buf->lb_buf;
+ memcpy(lcm, cur_lcm, sizeof(*lcm) + cur_entry_count * sizeof(*lcme));
+
+ offset = sizeof(*lcm) +
+ sizeof(*lcme) * (cur_entry_count + merge_entry_count);
+ for (i = 0; i < cur_entry_count; i++) {
+ struct lov_comp_md_entry_v1 *cur_lcme;
+
+ lcme = &lcm->lcm_entries[i];
+ cur_lcme = &cur_lcm->lcm_entries[i];
+
+ lcme->lcme_offset = cpu_to_le32(offset);
+ memcpy((char *)lcm + offset,
+ (char *)cur_lcm + le32_to_cpu(cur_lcme->lcme_offset),
+ le32_to_cpu(lcme->lcme_size));
+
+ offset += le32_to_cpu(lcme->lcme_size);
+
+ if (mirror_count == 1) {
+ /* new mirrored file, create new mirror ID */
+ id = pflr_id(1, i + 1);
+ lcme->lcme_id = cpu_to_le32(id);
+ }
+
+ id = MAX(le32_to_cpu(lcme->lcme_id), id);
+ }
+
+ mirror_id = mirror_id_of(id) + 1;
+ for (i = 0; i < merge_entry_count; i++) {
+ struct lov_comp_md_entry_v1 *merge_lcme;
+
+ merge_lcme = &merge_lcm->lcm_entries[i];
+ lcme = &lcm->lcm_entries[cur_entry_count + i];
+
+ *lcme = *merge_lcme;
+ lcme->lcme_offset = cpu_to_le32(offset);
+
+ id = pflr_id(mirror_id, i + 1);
+ lcme->lcme_id = cpu_to_le32(id);
+
+ memcpy((char *)lcm + offset,
+ (char *)merge_lcm + le32_to_cpu(merge_lcme->lcme_offset),
+ le32_to_cpu(lcme->lcme_size));
+
+ offset += le32_to_cpu(lcme->lcme_size);
+ }
+
+ /* fixup layout information */
+ lod_obj_inc_layout_gen(lo);
+ lcm->lcm_layout_gen = cpu_to_le32(lo->ldo_layout_gen);
+ lcm->lcm_size = cpu_to_le32(size);
+ lcm->lcm_entry_count = cpu_to_le16(cur_entry_count + merge_entry_count);
+ lcm->lcm_mirror_count = cpu_to_le16(mirror_count);
+ if ((le16_to_cpu(lcm->lcm_flags) & LCM_FL_FLR_MASK) == LCM_FL_NONE)
+ lcm->lcm_flags = cpu_to_le32(LCM_FL_RDONLY);
+
+ rc = lod_striping_reload(env, lo, buf);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt), buf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE, th);
+
+out:
+ lu_buf_free(buf);
+ RETURN(rc);
+}
+
+/**
+ * Split layouts, just set the LOVEA with the layout from mbuf.
+ */
+static int lod_declare_layout_split(const struct lu_env *env,
+ struct dt_object *dt, const struct lu_buf *mbuf,
+ struct thandle *th)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lov_comp_md_v1 *lcm = mbuf->lb_buf;
+ int rc;
+ ENTRY;
+
+ lod_obj_inc_layout_gen(lo);
+ lcm->lcm_layout_gen = cpu_to_le32(lo->ldo_layout_gen);
+
+ rc = lod_striping_reload(env, lo, mbuf);
+ if (rc)
+ RETURN(rc);
+
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt), mbuf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE, th);
+ RETURN(rc);
+}
+
+/**
+ * Implementation of dt_object_operations::do_declare_xattr_set.
+ *
+ * \see dt_object_operations::do_declare_xattr_set() in the API description
+ * for details.
+ *
+ * the extension to the API:
+ * - declaring LOVEA requests striping creation
+ * - LU_XATTR_REPLACE means layout swap
+ */
+static int lod_declare_xattr_set(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ const char *name, int fl,
+ struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ __u32 mode;
+ int rc;
+ ENTRY;
+
+ mode = dt->do_lu.lo_header->loh_attr & S_IFMT;
+ if ((S_ISREG(mode) || mode == 0) &&
+ !(fl & (LU_XATTR_REPLACE | LU_XATTR_MERGE | LU_XATTR_SPLIT)) &&
+ (strcmp(name, XATTR_NAME_LOV) == 0 ||
+ strcmp(name, XATTR_LUSTRE_LOV) == 0)) {
+ /*
+ * this is a request to create object's striping.
+ *
+ * allow to declare predefined striping on a new (!mode) object
+ * which is supposed to be replay of regular file creation
+ * (when LOV setting is declared)
+ *
+ * LU_XATTR_REPLACE is set to indicate a layout swap
+ */
+ if (dt_object_exists(dt)) {
+ rc = dt_attr_get(env, next, attr);
+ if (rc)
+ RETURN(rc);
+ } else {
+ memset(attr, 0, sizeof(*attr));
+ attr->la_valid = LA_TYPE | LA_MODE;
+ attr->la_mode = S_IFREG;
+ }
+ rc = lod_declare_striped_create(env, dt, attr, buf, th);
+ } else if (fl & LU_XATTR_MERGE) {
+ LASSERT(strcmp(name, XATTR_NAME_LOV) == 0 ||
+ strcmp(name, XATTR_LUSTRE_LOV) == 0);
+ rc = lod_declare_layout_merge(env, dt, buf, th);
+ } else if (fl & LU_XATTR_SPLIT) {
+ LASSERT(strcmp(name, XATTR_NAME_LOV) == 0 ||
+ strcmp(name, XATTR_LUSTRE_LOV) == 0);
+ rc = lod_declare_layout_split(env, dt, buf, th);
+ } else if (S_ISREG(mode) &&
+ strlen(name) > strlen(XATTR_LUSTRE_LOV) + 1 &&
+ strncmp(name, XATTR_LUSTRE_LOV,
+ strlen(XATTR_LUSTRE_LOV)) == 0) {
+ /*
+ * this is a request to modify object's striping.
+ * add/set/del component(s).
+ */
+ if (!dt_object_exists(dt))
+ RETURN(-ENOENT);
+
+ rc = lod_declare_modify_layout(env, dt, name, buf, th);
+ } else if (S_ISDIR(mode)) {
+ rc = lod_dir_declare_xattr_set(env, dt, buf, name, fl, th);
+ } else if (strcmp(name, XATTR_NAME_FID) == 0) {
+ rc = lod_replace_parent_fid(env, dt, th, true);
+ } else {
+ rc = lod_sub_declare_xattr_set(env, next, buf, name, fl, th);
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Apply xattr changes to the object.
+ *
+ * Applies xattr changes to the object and the stripes if the latter exist.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object
+ * \param[in] buf buffer pointing to the new value of xattr
+ * \param[in] name name of xattr
+ * \param[in] fl flags
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_xattr_set_internal(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ const char *name, int fl,
+ struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ int i;
+ ENTRY;
+
+ rc = lod_sub_xattr_set(env, next, buf, name, fl, th);
+ if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(rc);
+
+ /* Note: Do not set LinkEA on sub-stripes, otherwise
+ * it will confuse the fid2path process(see mdt_path_current()).
+ * The linkEA between master and sub-stripes is set in
+ * lod_xattr_set_lmv(). */
+ if (lo->ldo_dir_stripe_count == 0 || strcmp(name, XATTR_NAME_LINK) == 0)
+ RETURN(0);
+
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ LASSERT(lo->ldo_stripe[i]);
+
+ rc = lod_sub_xattr_set(env, lo->ldo_stripe[i], buf, name,
+ fl, th);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Delete an extended attribute.
+ *
+ * Deletes specified xattr from the object and the stripes if the latter exist.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object
+ * \param[in] name name of xattr
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_xattr_del_internal(const struct lu_env *env,
+ struct dt_object *dt,
+ const char *name, struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ int i;
+ ENTRY;
+
+ rc = lod_sub_xattr_del(env, next, name, th);
+ if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(rc);
+
+ if (lo->ldo_dir_stripe_count == 0)
+ RETURN(rc);
+
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ LASSERT(lo->ldo_stripe[i]);
+
+ rc = lod_sub_xattr_del(env, lo->ldo_stripe[i], name, th);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Set default striping on a directory.
+ *
+ * Sets specified striping on a directory object unless it matches the default
+ * striping (LOVEA_DELETE_VALUES() macro). In the latter case remove existing
+ * EA. This striping will be used when regular file is being created in this
+ * directory.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt the striped object
+ * \param[in] buf buffer with the striping
+ * \param[in] name name of EA
+ * \param[in] fl xattr flag (see OSD API description)
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_xattr_set_lov_on_dir(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ const char *name, int fl,
+ struct thandle *th)
+{
+ struct lov_user_md_v1 *lum;
+ struct lov_user_md_v3 *v3 = NULL;
+ const char *pool_name = NULL;
+ int rc;
+ bool is_del;
+ ENTRY;
+
+ LASSERT(buf != NULL && buf->lb_buf != NULL);
+ lum = buf->lb_buf;
+
+ switch (lum->lmm_magic) {
+ case LOV_USER_MAGIC_SPECIFIC:
+ case LOV_USER_MAGIC_V3:
+ v3 = buf->lb_buf;
+ if (v3->lmm_pool_name[0] != '\0')
+ pool_name = v3->lmm_pool_name;
+ /* fall through */
+ case LOV_USER_MAGIC_V1:
+ /* if { size, offset, count } = { 0, -1, 0 } and no pool
+ * (i.e. all default values specified) then delete default
+ * striping from dir. */
+ CDEBUG(D_LAYOUT,
+ "set default striping: sz %u # %u offset %d %s %s\n",
+ (unsigned)lum->lmm_stripe_size,
+ (unsigned)lum->lmm_stripe_count,
+ (int)lum->lmm_stripe_offset,
+ v3 ? "from" : "", v3 ? v3->lmm_pool_name : "");
+
+ is_del = LOVEA_DELETE_VALUES(lum->lmm_stripe_size,
+ lum->lmm_stripe_count,
+ lum->lmm_stripe_offset,
+ pool_name);
+ break;
+ case LOV_USER_MAGIC_COMP_V1:
+ is_del = false;
+ break;
+ default:
+ CERROR("Invalid magic %x\n", lum->lmm_magic);
+ RETURN(-EINVAL);
+ }
+
+ if (is_del) {
+ rc = lod_xattr_del_internal(env, dt, name, th);
+ if (rc == -ENODATA)
+ rc = 0;
+ } else {
+ rc = lod_xattr_set_internal(env, dt, buf, name, fl, th);
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Set default striping on a directory object.
+ *
+ * Sets specified striping on a directory object unless it matches the default
+ * striping (LOVEA_DELETE_VALUES() macro). In the latter case remove existing
+ * EA. This striping will be used when a new directory is being created in the
+ * directory.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt the striped object
+ * \param[in] buf buffer with the striping
+ * \param[in] name name of EA
+ * \param[in] fl xattr flag (see OSD API description)
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_xattr_set_default_lmv_on_dir(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ const char *name, int fl,
+ struct thandle *th)
+{
+ struct lmv_user_md_v1 *lum;
+ int rc;
+ ENTRY;
+
+ LASSERT(buf != NULL && buf->lb_buf != NULL);
+ lum = buf->lb_buf;
+
+ CDEBUG(D_OTHER, "set default stripe_count # %u stripe_offset %d\n",
+ le32_to_cpu(lum->lum_stripe_count),
+ (int)le32_to_cpu(lum->lum_stripe_offset));
+
+ if (LMVEA_DELETE_VALUES((le32_to_cpu(lum->lum_stripe_count)),
+ le32_to_cpu(lum->lum_stripe_offset)) &&
+ le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC) {
+ rc = lod_xattr_del_internal(env, dt, name, th);
+ if (rc == -ENODATA)
+ rc = 0;
+ } else {
+ rc = lod_xattr_set_internal(env, dt, buf, name, fl, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Turn directory into a striped directory.
+ *
+ * During replay the client sends the striping created before MDT
+ * failure, then the layer above LOD sends this defined striping
+ * using ->do_xattr_set(), so LOD uses this method to replay creation
+ * of the stripes. Notice the original information for the striping
+ * (#stripes, FIDs, etc) was transferred in declare path.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt the striped object
+ * \param[in] buf not used currently
+ * \param[in] name not used currently
+ * \param[in] fl xattr flag (see OSD API description)
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_xattr_set_lmv(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_buf *buf, const char *name,
+ int fl, struct thandle *th)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_attr *attr = &info->lti_attr;
+ struct dt_object_format *dof = &info->lti_format;
+ struct lu_buf lmv_buf;
+ struct lu_buf slave_lmv_buf;
+ struct lmv_mds_md_v1 *lmm;
+ struct lmv_mds_md_v1 *slave_lmm = NULL;
+ struct dt_insert_rec *rec = &info->lti_dt_rec;
+ int i;
+ int rc;
+ ENTRY;
+
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(-ENOTDIR);
+
+ /* The stripes are supposed to be allocated in declare phase,
+ * if there are no stripes being allocated, it will skip */
+ if (lo->ldo_dir_stripe_count == 0)
+ RETURN(0);
rc = dt_attr_get(env, dt_object_child(dt), attr);
if (rc != 0)
RETURN(rc);
- attr->la_valid = LA_ATIME | LA_MTIME | LA_CTIME |
- LA_MODE | LA_UID | LA_GID | LA_TYPE;
- dof->dof_type = DFT_DIR;
+ attr->la_valid = LA_ATIME | LA_MTIME | LA_CTIME |
+ LA_MODE | LA_UID | LA_GID | LA_TYPE | LA_PROJID;
+ dof->dof_type = DFT_DIR;
+
+ rc = lod_prep_lmv_md(env, dt, &lmv_buf);
+ if (rc != 0)
+ RETURN(rc);
+ lmm = lmv_buf.lb_buf;
+
+ OBD_ALLOC_PTR(slave_lmm);
+ if (slave_lmm == NULL)
+ RETURN(-ENOMEM);
+
+ lod_prep_slave_lmv_md(slave_lmm, lmm);
+ slave_lmv_buf.lb_buf = slave_lmm;
+ slave_lmv_buf.lb_len = sizeof(*slave_lmm);
+
+ rec->rec_type = S_IFDIR;
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ struct dt_object *dto;
+ char *stripe_name = info->lti_key;
+ struct lu_name *sname;
+ struct linkea_data ldata = { NULL };
+ struct lu_buf linkea_buf;
+
+ dto = lo->ldo_stripe[i];
+
+ dt_write_lock(env, dto, MOR_TGT_CHILD);
+ rc = lod_sub_create(env, dto, attr, NULL, dof, th);
+ if (rc != 0) {
+ dt_write_unlock(env, dto);
+ GOTO(out, rc);
+ }
+
+ rc = lod_sub_ref_add(env, dto, th);
+ dt_write_unlock(env, dto);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rec->rec_fid = lu_object_fid(&dto->do_lu);
+ rc = lod_sub_insert(env, dto, (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th, 0);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rec->rec_fid = lu_object_fid(&dt->do_lu);
+ rc = lod_sub_insert(env, dto, (struct dt_rec *)rec,
+ (const struct dt_key *)dotdot, th, 0);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_SLAVE_LMV) ||
+ cfs_fail_val != i) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_SLAVE_LMV) &&
+ cfs_fail_val == i)
+ slave_lmm->lmv_master_mdt_index =
+ cpu_to_le32(i + 1);
+ else
+ slave_lmm->lmv_master_mdt_index =
+ cpu_to_le32(i);
+
+ rc = lod_sub_xattr_set(env, dto, &slave_lmv_buf,
+ XATTR_NAME_LMV, fl, th);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_SLAVE_NAME) &&
+ cfs_fail_val == i)
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&dto->do_lu)), i + 1);
+ else
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&dto->do_lu)), i);
+
+ sname = lod_name_get(env, stripe_name, strlen(stripe_name));
+ rc = linkea_links_new(&ldata, &info->lti_linkea_buf,
+ sname, lu_object_fid(&dt->do_lu));
+ if (rc != 0)
+ GOTO(out, rc);
+
+ linkea_buf.lb_buf = ldata.ld_buf->lb_buf;
+ linkea_buf.lb_len = ldata.ld_leh->leh_len;
+ rc = lod_sub_xattr_set(env, dto, &linkea_buf,
+ XATTR_NAME_LINK, 0, th);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rec->rec_fid = lu_object_fid(&dto->do_lu);
+ rc = lod_sub_insert(env, dt_object_child(dt),
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)stripe_name, th, 0);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = lod_sub_ref_add(env, dt_object_child(dt), th);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+
+ if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MASTER_LMV))
+ rc = lod_sub_xattr_set(env, dt_object_child(dt),
+ &lmv_buf, XATTR_NAME_LMV, fl, th);
+out:
+ if (slave_lmm != NULL)
+ OBD_FREE_PTR(slave_lmm);
+
+ RETURN(rc);
+}
+
+/**
+ * Helper function to declare/execute creation of a striped directory
+ *
+ * Called in declare/create object path, prepare striping for a directory
+ * and prepare defaults data striping for the objects to be created in
+ * that directory. Notice the function calls "declaration" or "execution"
+ * methods depending on \a declare param. This is a consequence of the
+ * current approach while we don't have natural distributed transactions:
+ * we basically execute non-local updates in the declare phase. So, the
+ * arguments for the both phases are the same and this is the reason for
+ * this function to exist.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object
+ * \param[in] attr attributes the stripes will be created with
+ * \param[in] lmu lmv_user_md if MDT indices are specified
+ * \param[in] dof format of stripes (see OSD API description)
+ * \param[in] th transaction handle
+ * \param[in] declare where to call "declare" or "execute" methods
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_dir_striping_create_internal(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lu_attr *attr,
+ const struct lu_buf *lmu,
+ struct dt_object_format *dof,
+ struct thandle *th,
+ bool declare)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ const struct lod_default_striping *lds = lo->ldo_def_striping;
+ int rc;
+ ENTRY;
+
+ LASSERT(ergo(lds != NULL,
+ lds->lds_def_striping_set ||
+ lds->lds_dir_def_striping_set));
+
+ if (!LMVEA_DELETE_VALUES(lo->ldo_dir_stripe_count,
+ lo->ldo_dir_stripe_offset)) {
+ if (!lmu) {
+ struct lmv_user_md_v1 *v1 = info->lti_ea_store;
+ int stripe_count = lo->ldo_dir_stripe_count;
+
+ if (info->lti_ea_store_size < sizeof(*v1)) {
+ rc = lod_ea_store_resize(info, sizeof(*v1));
+ if (rc != 0)
+ RETURN(rc);
+ v1 = info->lti_ea_store;
+ }
+
+ memset(v1, 0, sizeof(*v1));
+ v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
+ v1->lum_stripe_count = cpu_to_le32(stripe_count);
+ v1->lum_stripe_offset =
+ cpu_to_le32(lo->ldo_dir_stripe_offset);
+
+ info->lti_buf.lb_buf = v1;
+ info->lti_buf.lb_len = sizeof(*v1);
+ lmu = &info->lti_buf;
+ }
+
+ if (declare)
+ rc = lod_declare_xattr_set_lmv(env, dt, attr, lmu, dof,
+ th);
+ else
+ rc = lod_xattr_set_lmv(env, dt, lmu, XATTR_NAME_LMV, 0,
+ th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ /* Transfer default LMV striping from the parent */
+ if (lds != NULL && lds->lds_dir_def_striping_set &&
+ !LMVEA_DELETE_VALUES(lds->lds_dir_def_stripe_count,
+ lds->lds_dir_def_stripe_offset)) {
+ struct lmv_user_md_v1 *v1 = info->lti_ea_store;
+
+ if (info->lti_ea_store_size < sizeof(*v1)) {
+ rc = lod_ea_store_resize(info, sizeof(*v1));
+ if (rc != 0)
+ RETURN(rc);
+ v1 = info->lti_ea_store;
+ }
+
+ memset(v1, 0, sizeof(*v1));
+ v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
+ v1->lum_stripe_count =
+ cpu_to_le32(lds->lds_dir_def_stripe_count);
+ v1->lum_stripe_offset =
+ cpu_to_le32(lds->lds_dir_def_stripe_offset);
+ v1->lum_hash_type =
+ cpu_to_le32(lds->lds_dir_def_hash_type);
+
+ info->lti_buf.lb_buf = v1;
+ info->lti_buf.lb_len = sizeof(*v1);
+ if (declare)
+ rc = lod_dir_declare_xattr_set(env, dt, &info->lti_buf,
+ XATTR_NAME_DEFAULT_LMV,
+ 0, th);
+ else
+ rc = lod_xattr_set_default_lmv_on_dir(env, dt,
+ &info->lti_buf,
+ XATTR_NAME_DEFAULT_LMV, 0,
+ th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ /* Transfer default LOV striping from the parent */
+ if (lds != NULL && lds->lds_def_striping_set &&
+ lds->lds_def_comp_cnt != 0) {
+ struct lov_mds_md *lmm;
+ int lmm_size = lod_comp_md_size(lo, true);
+
+ if (info->lti_ea_store_size < lmm_size) {
+ rc = lod_ea_store_resize(info, lmm_size);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ lmm = info->lti_ea_store;
+
+ rc = lod_generate_lovea(env, lo, lmm, &lmm_size, true);
+ if (rc != 0)
+ RETURN(rc);
+
+ info->lti_buf.lb_buf = lmm;
+ info->lti_buf.lb_len = lmm_size;
+
+ if (declare)
+ rc = lod_dir_declare_xattr_set(env, dt, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
+ else
+ rc = lod_xattr_set_lov_on_dir(env, dt, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ RETURN(0);
+}
+
+static int lod_declare_dir_striping_create(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lu_attr *attr,
+ struct lu_buf *lmu,
+ struct dt_object_format *dof,
+ struct thandle *th)
+{
+ return lod_dir_striping_create_internal(env, dt, attr, lmu, dof, th,
+ true);
+}
+
+static int lod_dir_striping_create(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lu_attr *attr,
+ struct dt_object_format *dof,
+ struct thandle *th)
+{
+ return lod_dir_striping_create_internal(env, dt, attr, NULL, dof, th,
+ false);
+}
+
+/**
+ * Make LOV EA for striped object.
+ *
+ * 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.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[in] th transaction handle
+ *
+ * \retval 0 if LOV EA is stored successfully
+ * \retval negative error number on failure
+ */
+static int lod_generate_and_set_lovea(const struct lu_env *env,
+ struct lod_object *lo,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ struct lov_mds_md_v1 *lmm;
+ int rc, lmm_size;
+ ENTRY;
+
+ LASSERT(lo);
+
+ if (lo->ldo_comp_cnt == 0) {
+ lod_striping_free(env, lo);
+ rc = lod_sub_xattr_del(env, next, XATTR_NAME_LOV, th);
+ RETURN(rc);
+ }
+
+ lmm_size = lod_comp_md_size(lo, false);
+ 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;
+
+ rc = lod_generate_lovea(env, lo, lmm, &lmm_size, false);
+ if (rc)
+ RETURN(rc);
+
+ info->lti_buf.lb_buf = lmm;
+ info->lti_buf.lb_len = lmm_size;
+ rc = lod_sub_xattr_set(env, next, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
+ RETURN(rc);
+}
+
+/**
+ * Delete layout component(s)
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] dt object
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative error number on failure
+ */
+static int lod_layout_del(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
+{
+ struct lod_layout_component *lod_comp;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ int rc, i, j, left;
+
+ LASSERT(lo->ldo_is_composite);
+ LASSERT(lo->ldo_comp_cnt > 0 && lo->ldo_comp_entries != NULL);
+
+ left = lo->ldo_comp_cnt;
+ for (i = (lo->ldo_comp_cnt - 1); i >= 0; i--) {
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (lod_comp->llc_id != LCME_ID_INVAL)
+ break;
+ left--;
+
+ /* Not instantiated component */
+ if (lod_comp->llc_stripe == NULL)
+ continue;
+
+ LASSERT(lod_comp->llc_stripe_count > 0);
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ struct dt_object *obj = lod_comp->llc_stripe[j];
+
+ if (obj == NULL)
+ continue;
+ rc = lod_sub_destroy(env, obj, th);
+ if (rc)
+ GOTO(out, rc);
+
+ lu_object_put(env, &obj->do_lu);
+ lod_comp->llc_stripe[j] = NULL;
+ }
+ OBD_FREE(lod_comp->llc_stripe, sizeof(struct dt_object *) *
+ lod_comp->llc_stripes_allocated);
+ lod_comp->llc_stripe = NULL;
+ OBD_FREE(lod_comp->llc_ost_indices,
+ sizeof(__u32) * lod_comp->llc_stripes_allocated);
+ lod_comp->llc_ost_indices = NULL;
+ lod_comp->llc_stripes_allocated = 0;
+ lod_obj_set_pool(lo, i, NULL);
+ if (lod_comp->llc_ostlist.op_array) {
+ OBD_FREE(lod_comp->llc_ostlist.op_array,
+ lod_comp->llc_ostlist.op_size);
+ lod_comp->llc_ostlist.op_array = NULL;
+ lod_comp->llc_ostlist.op_size = 0;
+ }
+ }
+
+ LASSERTF(left >= 0 && left < lo->ldo_comp_cnt, "left = %d\n", left);
+ if (left > 0) {
+ struct lod_layout_component *comp_array;
+
+ OBD_ALLOC(comp_array, sizeof(*comp_array) * left);
+ if (comp_array == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ memcpy(&comp_array[0], &lo->ldo_comp_entries[0],
+ sizeof(*comp_array) * left);
+
+ OBD_FREE(lo->ldo_comp_entries,
+ sizeof(*comp_array) * lo->ldo_comp_cnt);
+ lo->ldo_comp_entries = comp_array;
+ lo->ldo_comp_cnt = left;
+
+ LASSERT(lo->ldo_mirror_count == 1);
+ lo->ldo_mirrors[0].lme_end = left - 1;
+ lod_obj_inc_layout_gen(lo);
+ } else {
+ lod_free_comp_entries(lo);
+ }
+
+ LASSERT(dt_object_exists(dt));
+ rc = dt_attr_get(env, next, attr);
+ if (rc)
+ GOTO(out, rc);
+
+ if (attr->la_size > 0) {
+ attr->la_size = 0;
+ attr->la_valid = LA_SIZE;
+ rc = lod_sub_attr_set(env, next, attr, th);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ rc = lod_generate_and_set_lovea(env, lo, th);
+ EXIT;
+out:
+ if (rc)
+ lod_striping_free(env, lo);
+ return rc;
+}
+
+
+static int lod_get_default_lov_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds);
+/**
+ * Implementation of dt_object_operations::do_xattr_set.
+ *
+ * Sets specified extended attribute on the object. Three types of EAs are
+ * special:
+ * LOV EA - stores striping for a regular file or default striping (when set
+ * on a directory)
+ * LMV EA - stores a marker for the striped directories
+ * DMV EA - stores default directory striping
+ *
+ * When striping is applied to a non-striped existing object (this is called
+ * late striping), then LOD notices the caller wants to turn the object into a
+ * striped one. The stripe objects are created and appropriate EA is set:
+ * LOV EA storing all the stripes directly or LMV EA storing just a small header
+ * with striping configuration.
+ *
+ * \see dt_object_operations::do_xattr_set() in the API description for details.
+ */
+static int lod_xattr_set(const struct lu_env *env,
+ struct dt_object *dt, const struct lu_buf *buf,
+ const char *name, int fl, struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ int rc;
+ ENTRY;
+
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
+ strcmp(name, XATTR_NAME_LMV) == 0) {
+ struct lmv_mds_md_v1 *lmm = buf->lb_buf;
+
+ if (lmm != NULL && le32_to_cpu(lmm->lmv_hash_type) &
+ LMV_HASH_FLAG_MIGRATION)
+ rc = lod_sub_xattr_set(env, next, buf, name, fl, th);
+ else
+ rc = lod_dir_striping_create(env, dt, NULL, NULL, th);
+
+ RETURN(rc);
+ }
+
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
+ strcmp(name, XATTR_NAME_LOV) == 0) {
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_default_striping *lds = &info->lti_def_striping;
+ struct lov_user_md_v1 *v1 = buf->lb_buf;
+ char pool[LOV_MAXPOOLNAME + 1];
+ bool is_del;
+
+ /* get existing striping config */
+ rc = lod_get_default_lov_striping(env, lod_dt_obj(dt), lds);
+ if (rc)
+ RETURN(rc);
+
+ memset(pool, 0, sizeof(pool));
+ if (lds->lds_def_striping_set == 1)
+ lod_layout_get_pool(lds->lds_def_comp_entries,
+ lds->lds_def_comp_cnt, pool,
+ sizeof(pool));
+
+ is_del = LOVEA_DELETE_VALUES(v1->lmm_stripe_size,
+ v1->lmm_stripe_count,
+ v1->lmm_stripe_offset,
+ NULL);
+
+ /* Retain the pool name if it is not given */
+ if (v1->lmm_magic == LOV_USER_MAGIC_V1 && pool[0] != '\0' &&
+ !is_del) {
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lov_user_md_v3 *v3 = info->lti_ea_store;
+
+ memset(v3, 0, sizeof(*v3));
+ v3->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V3);
+ v3->lmm_pattern = cpu_to_le32(v1->lmm_pattern);
+ v3->lmm_stripe_count =
+ cpu_to_le32(v1->lmm_stripe_count);
+ v3->lmm_stripe_offset =
+ cpu_to_le32(v1->lmm_stripe_offset);
+ v3->lmm_stripe_size = cpu_to_le32(v1->lmm_stripe_size);
+
+ strlcpy(v3->lmm_pool_name, pool,
+ sizeof(v3->lmm_pool_name));
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+ rc = lod_xattr_set_lov_on_dir(env, dt, &info->lti_buf,
+ name, fl, th);
+ } else {
+ rc = lod_xattr_set_lov_on_dir(env, dt, buf, name,
+ fl, th);
+ }
+
+ if (lds->lds_def_striping_set == 1 &&
+ lds->lds_def_comp_entries != NULL)
+ lod_free_def_comp_entries(lds);
+
+ RETURN(rc);
+ } else if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
+ strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
+ /* default LMVEA */
+ rc = lod_xattr_set_default_lmv_on_dir(env, dt, buf, name, fl,
+ th);
+ RETURN(rc);
+ } else if (S_ISREG(dt->do_lu.lo_header->loh_attr) &&
+ (!strcmp(name, XATTR_NAME_LOV) ||
+ !strncmp(name, XATTR_LUSTRE_LOV,
+ strlen(XATTR_LUSTRE_LOV)))) {
+ /* in case of lov EA swap, just set it
+ * if not, it is a replay so check striping match what we
+ * already have during req replay, declare_xattr_set()
+ * defines striping, then create() does the work */
+ if (fl & LU_XATTR_REPLACE) {
+ /* free stripes, then update disk */
+ lod_striping_free(env, lod_dt_obj(dt));
+
+ rc = lod_sub_xattr_set(env, next, buf, name, fl, th);
+ } else if (dt_object_remote(dt)) {
+ /* This only happens during migration, see
+ * mdd_migrate_create(), in which Master MDT will
+ * create a remote target object, and only set
+ * (migrating) stripe EA on the remote object,
+ * and does not need creating each stripes. */
+ rc = lod_sub_xattr_set(env, next, buf, name,
+ fl, th);
+ } else if (strcmp(name, XATTR_LUSTRE_LOV".del") == 0) {
+ /* delete component(s) */
+ LASSERT(lod_dt_obj(dt)->ldo_comp_cached);
+ rc = lod_layout_del(env, dt, th);
+ } else {
+ /*
+ * When 'name' is XATTR_LUSTRE_LOV or XATTR_NAME_LOV,
+ * it's going to create create file with specified
+ * component(s), the striping must have not being
+ * cached in this case;
+ *
+ * Otherwise, it's going to add/change component(s) to
+ * an existing file, the striping must have been cached
+ * in this case.
+ */
+ LASSERT(equi(!strcmp(name, XATTR_LUSTRE_LOV) ||
+ !strcmp(name, XATTR_NAME_LOV),
+ !lod_dt_obj(dt)->ldo_comp_cached));
+
+ rc = lod_striped_create(env, dt, NULL, NULL, th);
+ }
+ RETURN(rc);
+ } else if (strcmp(name, XATTR_NAME_FID) == 0) {
+ rc = lod_replace_parent_fid(env, dt, th, false);
+
+ RETURN(rc);
+ }
+
+ /* then all other xattr */
+ rc = lod_xattr_set_internal(env, dt, buf, name, fl, th);
+
+ RETURN(rc);
+}
+
+/**
+ * Implementation of dt_object_operations::do_declare_xattr_del.
+ *
+ * \see dt_object_operations::do_declare_xattr_del() in the API description
+ * for details.
+ */
+static int lod_declare_xattr_del(const struct lu_env *env,
+ struct dt_object *dt, const char *name,
+ struct thandle *th)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ int i;
+ ENTRY;
+
+ rc = lod_sub_declare_xattr_del(env, dt_object_child(dt), name, th);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(0);
+
+ /* set xattr to each stripes, if needed */
+ rc = lod_striping_load(env, lo);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (lo->ldo_dir_stripe_count == 0)
+ RETURN(0);
+
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ LASSERT(lo->ldo_stripe[i]);
+ rc = lod_sub_declare_xattr_del(env, lo->ldo_stripe[i],
+ name, th);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Implementation of dt_object_operations::do_xattr_del.
+ *
+ * If EA storing a regular striping is being deleted, then release
+ * all the references to the stripe objects in core.
+ *
+ * \see dt_object_operations::do_xattr_del() in the API description for details.
+ */
+static int lod_xattr_del(const struct lu_env *env, struct dt_object *dt,
+ const char *name, struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ int i;
+ ENTRY;
+
+ if (!strcmp(name, XATTR_NAME_LOV))
+ lod_striping_free(env, lod_dt_obj(dt));
+
+ rc = lod_sub_xattr_del(env, next, name, th);
+ if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(rc);
+
+ if (lo->ldo_dir_stripe_count == 0)
+ RETURN(0);
+
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ LASSERT(lo->ldo_stripe[i]);
+
+ rc = lod_sub_xattr_del(env, lo->ldo_stripe[i], name, th);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Implementation of dt_object_operations::do_xattr_list.
+ *
+ * \see dt_object_operations::do_xattr_list() in the API description
+ * for details.
+ */
+static int lod_xattr_list(const struct lu_env *env,
+ struct dt_object *dt, const struct lu_buf *buf)
+{
+ return dt_xattr_list(env, dt_object_child(dt), buf);
+}
+
+static inline int lod_object_will_be_striped(int is_reg, const struct lu_fid *fid)
+{
+ return (is_reg && fid_seq(fid) != FID_SEQ_LOCAL_FILE);
+}
+
+/**
+ * Copy OST list from layout provided by user.
+ *
+ * \param[in] lod_comp layout_component to be filled
+ * \param[in] v3 LOV EA V3 user data
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
+ struct lov_user_md_v3 *v3)
+{
+ int j;
+
+ ENTRY;
+
+ if (v3->lmm_stripe_offset == LOV_OFFSET_DEFAULT)
+ v3->lmm_stripe_offset = v3->lmm_objects[0].l_ost_idx;
+
+ if (lod_comp->llc_ostlist.op_array) {
+ if (lod_comp->llc_ostlist.op_count ==
+ v3->lmm_stripe_count)
+ goto skip;
+ OBD_FREE(lod_comp->llc_ostlist.op_array,
+ lod_comp->llc_ostlist.op_size);
+ }
+
+ /* copy ost list from lmm */
+ lod_comp->llc_ostlist.op_count = v3->lmm_stripe_count;
+ lod_comp->llc_ostlist.op_size = v3->lmm_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)
+ RETURN(-ENOMEM);
+skip:
+ for (j = 0; j < v3->lmm_stripe_count; j++) {
+ lod_comp->llc_ostlist.op_array[j] =
+ v3->lmm_objects[j].l_ost_idx;
+ }
+
+ RETURN(0);
+}
+
+
+/**
+ * Get default striping.
+ *
+ * \param[in] env execution environment
+ * \param[in] lo object
+ * \param[out] lds default striping
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_get_default_lov_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lov_user_md_v1 *v1 = NULL;
+ struct lov_user_md_v3 *v3 = NULL;
+ struct lov_comp_md_v1 *comp_v1 = NULL;
+ __u16 comp_cnt;
+ __u16 mirror_cnt;
+ bool composite;
+ int rc, i;
+ ENTRY;
+
+ lds->lds_def_striping_set = 0;
+
+ rc = lod_get_lov_ea(env, lo);
+ if (rc < 0)
+ RETURN(rc);
+
+ if (rc < (typeof(rc))sizeof(struct lov_user_md))
+ RETURN(0);
+
+ v1 = info->lti_ea_store;
+ if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
+ lustre_swab_lov_user_md_v1(v1);
+ } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
+ v3 = (struct lov_user_md_v3 *)v1;
+ lustre_swab_lov_user_md_v3(v3);
+ } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC)) {
+ v3 = (struct lov_user_md_v3 *)v1;
+ lustre_swab_lov_user_md_v3(v3);
+ lustre_swab_lov_user_md_objects(v3->lmm_objects,
+ v3->lmm_stripe_count);
+ } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_COMP_V1)) {
+ comp_v1 = (struct lov_comp_md_v1 *)v1;
+ lustre_swab_lov_comp_md_v1(comp_v1);
+ }
+
+ if (v1->lmm_magic != LOV_MAGIC_V3 && v1->lmm_magic != LOV_MAGIC_V1 &&
+ v1->lmm_magic != LOV_MAGIC_COMP_V1 &&
+ v1->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
+ RETURN(-ENOTSUPP);
+
+ if (v1->lmm_magic == LOV_MAGIC_COMP_V1) {
+ comp_v1 = (struct lov_comp_md_v1 *)v1;
+ comp_cnt = comp_v1->lcm_entry_count;
+ if (comp_cnt == 0)
+ RETURN(-EINVAL);
+ mirror_cnt = comp_v1->lcm_mirror_count + 1;
+ composite = true;
+ } else {
+ comp_cnt = 1;
+ mirror_cnt = 0;
+ composite = false;
+ }
+
+ /* realloc default comp entries if necessary */
+ rc = lod_def_striping_comp_resize(lds, comp_cnt);
+ if (rc < 0)
+ RETURN(rc);
+
+ lds->lds_def_comp_cnt = comp_cnt;
+ lds->lds_def_striping_is_composite = composite;
+ lds->lds_def_mirror_cnt = mirror_cnt;
+
+ for (i = 0; i < comp_cnt; i++) {
+ struct lod_layout_component *lod_comp;
+ struct lu_extent *ext;
+ char *pool;
+
+ lod_comp = &lds->lds_def_comp_entries[i];
+ /*
+ * reset lod_comp values, llc_stripes is always NULL in
+ * the default striping template, llc_pool will be reset
+ * later below.
+ */
+ memset(lod_comp, 0, offsetof(typeof(*lod_comp), llc_pool));
+
+ if (composite) {
+ v1 = (struct lov_user_md *)((char *)comp_v1 +
+ comp_v1->lcm_entries[i].lcme_offset);
+ ext = &comp_v1->lcm_entries[i].lcme_extent;
+ lod_comp->llc_extent = *ext;
+ }
+
+ if (v1->lmm_pattern != LOV_PATTERN_RAID0 &&
+ v1->lmm_pattern != LOV_PATTERN_MDT &&
+ v1->lmm_pattern != 0) {
+ lod_free_def_comp_entries(lds);
+ RETURN(-EINVAL);
+ }
+
+ CDEBUG(D_LAYOUT, DFID" stripe_count=%d stripe_size=%d "
+ "stripe_offset=%d\n",
+ PFID(lu_object_fid(&lo->ldo_obj.do_lu)),
+ (int)v1->lmm_stripe_count, (int)v1->lmm_stripe_size,
+ (int)v1->lmm_stripe_offset);
+
+ lod_comp->llc_stripe_count = v1->lmm_stripe_count;
+ lod_comp->llc_stripe_size = v1->lmm_stripe_size;
+ lod_comp->llc_stripe_offset = v1->lmm_stripe_offset;
+ lod_comp->llc_pattern = v1->lmm_pattern;
+
+ pool = NULL;
+ if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
+ /* XXX: sanity check here */
+ v3 = (struct lov_user_md_v3 *) v1;
+ if (v3->lmm_pool_name[0] != '\0')
+ pool = v3->lmm_pool_name;
+ }
+ lod_set_def_pool(lds, i, pool);
+ if (v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
+ v3 = (struct lov_user_md_v3 *)v1;
+ rc = lod_comp_copy_ost_lists(lod_comp, v3);
+ if (rc)
+ RETURN(rc);
+ }
+ }
+
+ lds->lds_def_striping_set = 1;
+ RETURN(rc);
+}
+
+/**
+ * Get default directory striping.
+ *
+ * \param[in] env execution environment
+ * \param[in] lo object
+ * \param[out] lds default striping
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_get_default_lmv_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lmv_user_md_v1 *v1 = NULL;
+ int rc;
+ ENTRY;
+
+ lds->lds_dir_def_striping_set = 0;
+ rc = lod_get_default_lmv_ea(env, lo);
+ if (rc < 0)
+ RETURN(rc);
+
+ if (rc < (typeof(rc))sizeof(struct lmv_user_md))
+ RETURN(0);
- rc = lod_prep_lmv_md(env, dt, &lmv_buf);
- if (rc != 0)
+ v1 = info->lti_ea_store;
+
+ lds->lds_dir_def_stripe_count = le32_to_cpu(v1->lum_stripe_count);
+ lds->lds_dir_def_stripe_offset = le32_to_cpu(v1->lum_stripe_offset);
+ lds->lds_dir_def_hash_type = le32_to_cpu(v1->lum_hash_type);
+ lds->lds_dir_def_striping_set = 1;
+
+ RETURN(0);
+}
+
+/**
+ * Get default striping in the object.
+ *
+ * Get object default striping and default directory striping.
+ *
+ * \param[in] env execution environment
+ * \param[in] lo object
+ * \param[out] lds default striping
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_get_default_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds)
+{
+ int rc, rc1;
+
+ rc = lod_get_default_lov_striping(env, lo, lds);
+ rc1 = lod_get_default_lmv_striping(env, lo, lds);
+ if (rc == 0 && rc1 < 0)
+ rc = rc1;
+
+ return rc;
+}
+
+/**
+ * Apply default striping on object.
+ *
+ * If object striping pattern is not set, set to the one in default striping.
+ * The default striping is from parent or fs.
+ *
+ * \param[in] lo new object
+ * \param[in] lds default striping
+ * \param[in] mode new object's mode
+ */
+static void lod_striping_from_default(struct lod_object *lo,
+ const struct lod_default_striping *lds,
+ umode_t mode)
+{
+ struct lod_device *d = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lov_desc *desc = &d->lod_desc;
+ int i, rc;
+
+ if (lds->lds_def_striping_set && S_ISREG(mode)) {
+ rc = lod_alloc_comp_entries(lo, lds->lds_def_mirror_cnt,
+ lds->lds_def_comp_cnt);
+ if (rc != 0)
+ return;
+
+ lo->ldo_is_composite = lds->lds_def_striping_is_composite;
+ if (lds->lds_def_mirror_cnt > 1)
+ lo->ldo_flr_state = LCM_FL_RDONLY;
+
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ struct lod_layout_component *obj_comp =
+ &lo->ldo_comp_entries[i];
+ struct lod_layout_component *def_comp =
+ &lds->lds_def_comp_entries[i];
+
+ CDEBUG(D_LAYOUT, "Inherite from default: size:%hu "
+ "nr:%u offset:%u pattern %#x %s\n",
+ def_comp->llc_stripe_size,
+ def_comp->llc_stripe_count,
+ def_comp->llc_stripe_offset,
+ def_comp->llc_pattern,
+ def_comp->llc_pool ?: "");
+
+ *obj_comp = *def_comp;
+ if (def_comp->llc_pool != NULL) {
+ /* pointer was copied from def_comp */
+ obj_comp->llc_pool = NULL;
+ lod_obj_set_pool(lo, i, def_comp->llc_pool);
+ }
+
+ /* copy ost list */
+ if (def_comp->llc_ostlist.op_array) {
+ OBD_ALLOC(obj_comp->llc_ostlist.op_array,
+ obj_comp->llc_ostlist.op_size);
+ if (!obj_comp->llc_ostlist.op_array)
+ return;
+ memcpy(obj_comp->llc_ostlist.op_array,
+ def_comp->llc_ostlist.op_array,
+ obj_comp->llc_ostlist.op_size);
+ }
+
+ /*
+ * Don't initialize these fields for plain layout
+ * (v1/v3) here, they are inherited in the order of
+ * 'parent' -> 'fs default (root)' -> 'global default
+ * values for stripe_count & stripe_size'.
+ *
+ * see lod_ah_init().
+ */
+ if (!lo->ldo_is_composite)
+ continue;
+
+ lod_adjust_stripe_info(obj_comp, desc);
+ }
+ } else if (lds->lds_dir_def_striping_set && S_ISDIR(mode)) {
+ if (lo->ldo_dir_stripe_count == 0)
+ lo->ldo_dir_stripe_count =
+ lds->lds_dir_def_stripe_count;
+ if (lo->ldo_dir_stripe_offset == -1)
+ lo->ldo_dir_stripe_offset =
+ lds->lds_dir_def_stripe_offset;
+ if (lo->ldo_dir_hash_type == 0)
+ lo->ldo_dir_hash_type = lds->lds_dir_def_hash_type;
+
+ CDEBUG(D_LAYOUT, "striping from default dir: count:%hu, "
+ "offset:%u, hash_type:%u\n",
+ lo->ldo_dir_stripe_count, lo->ldo_dir_stripe_offset,
+ lo->ldo_dir_hash_type);
+ }
+}
+
+static inline bool lod_need_inherit_more(struct lod_object *lo, bool from_root)
+{
+ struct lod_layout_component *lod_comp;
+
+ if (lo->ldo_comp_cnt == 0)
+ return true;
+
+ if (lo->ldo_is_composite)
+ return false;
+
+ lod_comp = &lo->ldo_comp_entries[0];
+
+ if (lod_comp->llc_stripe_count <= 0 ||
+ lod_comp->llc_stripe_size <= 0)
+ return true;
+
+ if (from_root && (lod_comp->llc_pool == NULL ||
+ lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT))
+ return true;
+
+ return false;
+}
+
+/**
+ * Implementation of dt_object_operations::do_ah_init.
+ *
+ * This method is used to make a decision on the striping configuration for the
+ * object being created. It can be taken from the \a parent object if it exists,
+ * or filesystem's default. The resulting configuration (number of stripes,
+ * stripe size/offset, pool name, etc) is stored in the object itself and will
+ * be used by the methods like ->doo_declare_create().
+ *
+ * \see dt_object_operations::do_ah_init() in the API description for details.
+ */
+static void lod_ah_init(const struct lu_env *env,
+ struct dt_allocation_hint *ah,
+ struct dt_object *parent,
+ struct dt_object *child,
+ umode_t child_mode)
+{
+ struct lod_device *d = lu2lod_dev(child->do_lu.lo_dev);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_default_striping *lds = &info->lti_def_striping;
+ struct dt_object *nextp = NULL;
+ struct dt_object *nextc;
+ struct lod_object *lp = NULL;
+ struct lod_object *lc;
+ struct lov_desc *desc;
+ struct lod_layout_component *lod_comp;
+ int rc;
+ ENTRY;
+
+ LASSERT(child);
+
+ if (likely(parent)) {
+ nextp = dt_object_child(parent);
+ lp = lod_dt_obj(parent);
+ }
+
+ nextc = dt_object_child(child);
+ lc = lod_dt_obj(child);
+
+ LASSERT(!lod_obj_is_striped(child));
+ /* default layout template may have been set on the regular file
+ * when this is called from mdd_create_data() */
+ if (S_ISREG(child_mode))
+ lod_free_comp_entries(lc);
+
+ if (!dt_object_exists(nextc))
+ nextc->do_ops->do_ah_init(env, ah, nextp, nextc, child_mode);
+
+ if (S_ISDIR(child_mode)) {
+ const struct lmv_user_md_v1 *lum1 = ah->dah_eadata;
+
+ /* other default values are 0 */
+ lc->ldo_dir_stripe_offset = -1;
+
+ /* get default striping from parent object */
+ if (likely(lp != NULL))
+ lod_get_default_striping(env, lp, lds);
+
+ /* set child default striping info, default value is NULL */
+ if (lds->lds_def_striping_set || lds->lds_dir_def_striping_set)
+ lc->ldo_def_striping = lds;
+
+ /* It should always honour the specified stripes */
+ /* Note: old client (< 2.7)might also do lfs mkdir, whose EA
+ * will have old magic. In this case, we should ignore the
+ * stripe count and try to create dir by default stripe.
+ */
+ if (ah->dah_eadata != NULL && ah->dah_eadata_len != 0 &&
+ (le32_to_cpu(lum1->lum_magic) == LMV_USER_MAGIC ||
+ le32_to_cpu(lum1->lum_magic) == LMV_USER_MAGIC_SPECIFIC)) {
+ lc->ldo_dir_stripe_count =
+ le32_to_cpu(lum1->lum_stripe_count);
+ lc->ldo_dir_stripe_offset =
+ le32_to_cpu(lum1->lum_stripe_offset);
+ lc->ldo_dir_hash_type =
+ le32_to_cpu(lum1->lum_hash_type);
+ CDEBUG(D_INFO,
+ "set dirstripe: count %hu, offset %d, hash %u\n",
+ lc->ldo_dir_stripe_count,
+ (int)lc->ldo_dir_stripe_offset,
+ lc->ldo_dir_hash_type);
+ } else {
+ /* transfer defaults LMV to new directory */
+ lod_striping_from_default(lc, lds, child_mode);
+ }
+
+ /* shrink the stripe_count to the avaible MDT count */
+ if (lc->ldo_dir_stripe_count > d->lod_remote_mdt_count + 1 &&
+ !OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))
+ lc->ldo_dir_stripe_count = d->lod_remote_mdt_count + 1;
+
+ /* Directory will be striped only if stripe_count > 1, if
+ * stripe_count == 1, let's reset stripe_count = 0 to avoid
+ * create single master stripe and also help to unify the
+ * stripe handling of directories and files */
+ if (lc->ldo_dir_stripe_count == 1)
+ lc->ldo_dir_stripe_count = 0;
+
+ CDEBUG(D_INFO, "final dir stripe [%hu %d %u]\n",
+ lc->ldo_dir_stripe_count,
+ (int)lc->ldo_dir_stripe_offset, lc->ldo_dir_hash_type);
+
+ RETURN_EXIT;
+ }
+
+ /* child object regular file*/
+
+ if (!lod_object_will_be_striped(S_ISREG(child_mode),
+ lu_object_fid(&child->do_lu)))
+ RETURN_EXIT;
+
+ /* If object is going to be striped over OSTs, transfer default
+ * striping information to the child, so that we can use it
+ * during declaration and creation.
+ *
+ * Try from the parent first.
+ */
+ if (likely(lp != NULL)) {
+ rc = lod_get_default_lov_striping(env, lp, lds);
+ if (rc == 0)
+ lod_striping_from_default(lc, lds, child_mode);
+ }
+
+ /* Initialize lod_device::lod_md_root object reference */
+ if (d->lod_md_root == NULL) {
+ struct dt_object *root;
+ struct lod_object *lroot;
+
+ lu_root_fid(&info->lti_fid);
+ root = dt_locate(env, &d->lod_dt_dev, &info->lti_fid);
+ if (!IS_ERR(root)) {
+ lroot = lod_dt_obj(root);
+
+ spin_lock(&d->lod_lock);
+ if (d->lod_md_root != NULL)
+ dt_object_put(env, &d->lod_md_root->ldo_obj);
+ d->lod_md_root = lroot;
+ spin_unlock(&d->lod_lock);
+ }
+ }
+
+ /* try inherit layout from the root object (fs default) when:
+ * - parent does not have default layout; or
+ * - parent has plain(v1/v3) default layout, and some attributes
+ * are not specified in the default layout;
+ */
+ if (d->lod_md_root != NULL && lod_need_inherit_more(lc, true)) {
+ rc = lod_get_default_lov_striping(env, d->lod_md_root, lds);
+ if (rc)
+ goto out;
+ if (lc->ldo_comp_cnt == 0) {
+ lod_striping_from_default(lc, lds, child_mode);
+ } else if (!lds->lds_def_striping_is_composite) {
+ struct lod_layout_component *def_comp;
+
+ LASSERT(!lc->ldo_is_composite);
+ lod_comp = &lc->ldo_comp_entries[0];
+ def_comp = &lds->lds_def_comp_entries[0];
+
+ if (lod_comp->llc_stripe_count <= 0)
+ lod_comp->llc_stripe_count =
+ def_comp->llc_stripe_count;
+ if (lod_comp->llc_stripe_size <= 0)
+ lod_comp->llc_stripe_size =
+ def_comp->llc_stripe_size;
+ if (lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT)
+ lod_comp->llc_stripe_offset =
+ def_comp->llc_stripe_offset;
+ if (lod_comp->llc_pool == NULL)
+ lod_obj_set_pool(lc, 0, def_comp->llc_pool);
+ }
+ }
+out:
+ /*
+ * fs default striping may not be explicitly set, or historically set
+ * in config log, use them.
+ */
+ if (lod_need_inherit_more(lc, false)) {
+ if (lc->ldo_comp_cnt == 0) {
+ rc = lod_alloc_comp_entries(lc, 0, 1);
+ if (rc)
+ /* fail to allocate memory, will create a
+ * non-striped file. */
+ RETURN_EXIT;
+ lc->ldo_is_composite = 0;
+ lod_comp = &lc->ldo_comp_entries[0];
+ lod_comp->llc_stripe_offset = LOV_OFFSET_DEFAULT;
+ }
+ LASSERT(!lc->ldo_is_composite);
+ lod_comp = &lc->ldo_comp_entries[0];
+ desc = &d->lod_desc;
+ lod_adjust_stripe_info(lod_comp, desc);
+ }
+
+ EXIT;
+}
+
+#define ll_do_div64(aaa,bbb) do_div((aaa), (bbb))
+/**
+ * Size initialization on late striping.
+ *
+ * Propagate the size of a truncated object to a deferred striping.
+ * This function handles a special case when truncate was done on a
+ * non-striped object and now while the striping is being created
+ * we can't lose that size, so we have to propagate it to the stripes
+ * being created.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_declare_init_size(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object **objects = NULL;
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ uint64_t size, offs;
+ int i, rc, stripe, stripe_count = 0, stripe_size = 0;
+ struct lu_extent size_ext;
+ ENTRY;
+
+ if (!lod_obj_is_striped(dt))
+ RETURN(0);
+
+ rc = dt_attr_get(env, next, attr);
+ LASSERT(attr->la_valid & LA_SIZE);
+ if (rc)
RETURN(rc);
- lmm = lmv_buf.lb_buf;
- OBD_ALLOC_PTR(slave_lmm);
- if (slave_lmm == NULL)
- RETURN(-ENOMEM);
+ size = attr->la_size;
+ if (size == 0)
+ RETURN(0);
- lod_prep_slave_lmv_md(slave_lmm, lmm);
- slave_lmv_buf.lb_buf = slave_lmm;
- slave_lmv_buf.lb_len = sizeof(*slave_lmm);
+ size_ext = (typeof(size_ext)){ .e_start = size - 1, .e_end = size };
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ struct lod_layout_component *lod_comp;
+ struct lu_extent *extent;
+
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (lod_comp->llc_stripe == NULL)
+ continue;
+
+ extent = &lod_comp->llc_extent;
+ CDEBUG(D_INFO, "%lld "DEXT"\n", size, PEXT(extent));
+ if (!lo->ldo_is_composite ||
+ lu_extent_is_overlapped(extent, &size_ext)) {
+ objects = lod_comp->llc_stripe;
+ stripe_count = lod_comp->llc_stripe_count;
+ stripe_size = lod_comp->llc_stripe_size;
+
+ /* next mirror */
+ if (stripe_count == 0)
+ continue;
+
+ LASSERT(objects != NULL && stripe_size != 0);
+ /* ll_do_div64(a, b) returns a % b, and a = a / b */
+ ll_do_div64(size, (__u64)stripe_size);
+ stripe = ll_do_div64(size, (__u64)stripe_count);
+ LASSERT(objects[stripe] != NULL);
+
+ size = size * stripe_size;
+ offs = attr->la_size;
+ size += ll_do_div64(offs, stripe_size);
+
+ attr->la_valid = LA_SIZE;
+ attr->la_size = size;
+
+ rc = lod_sub_declare_attr_set(env, objects[stripe],
+ attr, th);
+ }
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * Declare creation of striped object.
+ *
+ * The function declares creation stripes for a regular object. The function
+ * also declares whether the stripes will be created with non-zero size if
+ * previously size was set non-zero on the master object. If object \a dt is
+ * not local, then only fully defined striping can be applied in \a lovea.
+ * Otherwise \a lovea can be in the form of pattern, see lod_qos_parse_config()
+ * for the details.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object
+ * \param[in] attr attributes the stripes will be created with
+ * \param[in] lovea a buffer containing striping description
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
+ struct lu_attr *attr,
+ const struct lu_buf *lovea, struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ ENTRY;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_ALLOC_OBDO))
+ GOTO(out, rc = -ENOMEM);
+
+ if (!dt_object_remote(next)) {
+ /* choose OST and generate appropriate objects */
+ rc = lod_prepare_create(env, lo, attr, lovea, th);
+ if (rc)
+ GOTO(out, rc);
+
+ /*
+ * declare storage for striping data
+ */
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ } else {
+ /* LOD can not choose OST objects for remote objects, i.e.
+ * stripes must be ready before that. Right now, it can only
+ * happen during migrate, i.e. migrate process needs to create
+ * remote regular file (mdd_migrate_create), then the migrate
+ * process will provide stripeEA. */
+ LASSERT(lovea != NULL);
+ info->lti_buf = *lovea;
+ }
+
+ rc = lod_sub_declare_xattr_set(env, next, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
+ if (rc)
+ GOTO(out, rc);
+
+ /*
+ * if striping is created with local object's size > 0,
+ * we have to propagate this size to specific object
+ * the case is possible only when local object was created previously
+ */
+ if (dt_object_exists(next))
+ rc = lod_declare_init_size(env, dt, th);
+
+out:
+ /* failed to create striping or to set initial size, let's reset
+ * config so that others don't get confused */
+ if (rc)
+ lod_striping_free(env, lo);
- rec->rec_type = S_IFDIR;
- for (i = 0; i < lo->ldo_stripenr; i++) {
- struct dt_object *dto;
- char *stripe_name = info->lti_key;
- struct lu_name *sname;
- struct linkea_data ldata = { NULL };
- struct lu_buf linkea_buf;
+ RETURN(rc);
+}
- dto = lo->ldo_stripe[i];
+/**
+ * Implementation of dt_object_operations::do_declare_create.
+ *
+ * The method declares creation of a new object. If the object will be striped,
+ * then helper functions are called to find FIDs for the stripes, declare
+ * creation of the stripes and declare initialization of the striping
+ * information to be stored in the master object.
+ *
+ * \see dt_object_operations::do_declare_create() in the API description
+ * for details.
+ */
+static int lod_declare_create(const struct lu_env *env, struct dt_object *dt,
+ struct lu_attr *attr,
+ struct dt_allocation_hint *hint,
+ struct dt_object_format *dof, struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ ENTRY;
- dt_write_lock(env, dto, MOR_TGT_CHILD);
- rc = lod_sub_object_create(env, dto, attr, NULL, dof,
- th);
- if (rc != 0) {
- dt_write_unlock(env, dto);
- GOTO(out, rc);
- }
+ LASSERT(dof);
+ LASSERT(attr);
+ LASSERT(th);
- rc = lod_sub_object_ref_add(env, dto, th);
- dt_write_unlock(env, dto);
- if (rc != 0)
- GOTO(out, rc);
+ /*
+ * first of all, we declare creation of local object
+ */
+ rc = lod_sub_declare_create(env, next, attr, hint, dof, th);
+ if (rc != 0)
+ GOTO(out, rc);
- rec->rec_fid = lu_object_fid(&dto->do_lu);
- rc = lod_sub_object_index_insert(env, dto,
- (const struct dt_rec *)rec,
- (const struct dt_key *)dot, th, 0);
- if (rc != 0)
- GOTO(out, rc);
+ /*
+ * it's lod_ah_init() that has decided the object will be striped
+ */
+ if (dof->dof_type == DFT_REGULAR) {
+ /* callers don't want stripes */
+ /* XXX: all tricky interactions with ->ah_make_hint() decided
+ * to use striping, then ->declare_create() behaving differently
+ * should be cleaned */
+ if (dof->u.dof_reg.striped != 0)
+ rc = lod_declare_striped_create(env, dt, attr,
+ NULL, th);
+ } else if (dof->dof_type == DFT_DIR) {
+ struct seq_server_site *ss;
+ struct lu_buf buf = { NULL };
+ struct lu_buf *lmu = NULL;
- rec->rec_fid = lu_object_fid(&dt->do_lu);
- rc = lod_sub_object_index_insert(env, dto, (struct dt_rec *)rec,
- (const struct dt_key *)dotdot, th, 0);
- if (rc != 0)
- GOTO(out, rc);
+ ss = lu_site2seq(dt->do_lu.lo_dev->ld_site);
- if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_SLAVE_LMV) ||
- cfs_fail_val != i) {
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_SLAVE_LMV) &&
- cfs_fail_val == i)
- slave_lmm->lmv_master_mdt_index =
- cpu_to_le32(i + 1);
- else
- slave_lmm->lmv_master_mdt_index =
- cpu_to_le32(i);
+ /* If the parent has default stripeEA, and client
+ * did not find it before sending create request,
+ * then MDT will return -EREMOTE, and client will
+ * retrieve the default stripeEA and re-create the
+ * sub directory.
+ *
+ * Note: if dah_eadata != NULL, it means creating the
+ * striped directory with specified stripeEA, then it
+ * should ignore the default stripeEA */
+ if (hint != NULL && hint->dah_eadata == NULL) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STALE_DIR_LAYOUT))
+ GOTO(out, rc = -EREMOTE);
+
+ if (lo->ldo_dir_stripe_offset == -1) {
+ /* child and parent should be in the same MDT */
+ if (hint->dah_parent != NULL &&
+ dt_object_remote(hint->dah_parent))
+ GOTO(out, rc = -EREMOTE);
+ } else if (lo->ldo_dir_stripe_offset !=
+ ss->ss_node_id) {
+ struct lod_device *lod;
+ struct lod_tgt_descs *ltd;
+ struct lod_tgt_desc *tgt = NULL;
+ bool found_mdt = false;
+ int i;
+
+ lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ ltd = &lod->lod_mdt_descs;
+ cfs_foreach_bit(ltd->ltd_tgt_bitmap, i) {
+ tgt = LTD_TGT(ltd, i);
+ if (tgt->ltd_index ==
+ lo->ldo_dir_stripe_offset) {
+ found_mdt = true;
+ break;
+ }
+ }
- rc = lod_sub_object_xattr_set(env, dto, &slave_lmv_buf,
- XATTR_NAME_LMV, fl, th);
- if (rc != 0)
- GOTO(out, rc);
+ /* If the MDT indicated by stripe_offset can be
+ * found, then tell client to resend the create
+ * request to the correct MDT, otherwise return
+ * error to client */
+ if (found_mdt)
+ GOTO(out, rc = -EREMOTE);
+ else
+ GOTO(out, rc = -EINVAL);
+ }
+ } else if (hint && hint->dah_eadata) {
+ lmu = &buf;
+ lmu->lb_buf = (void *)hint->dah_eadata;
+ lmu->lb_len = hint->dah_eadata_len;
}
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_SLAVE_NAME) &&
- cfs_fail_val == i)
- snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
- PFID(lu_object_fid(&dto->do_lu)), i + 1);
- else
- snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
- PFID(lu_object_fid(&dto->do_lu)), i);
-
- sname = lod_name_get(env, stripe_name, strlen(stripe_name));
- rc = linkea_data_new(&ldata, &info->lti_linkea_buf);
- if (rc != 0)
- GOTO(out, rc);
+ rc = lod_declare_dir_striping_create(env, dt, attr, lmu, dof,
+ th);
+ }
+out:
+ /* failed to create striping or to set initial size, let's reset
+ * config so that others don't get confused */
+ if (rc)
+ lod_striping_free(env, lo);
+ RETURN(rc);
+}
- rc = linkea_add_buf(&ldata, sname, lu_object_fid(&dt->do_lu));
- if (rc != 0)
- GOTO(out, 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 mirror_id, int comp_idx)
+{
+ struct lod_layout_component *lod_comp;
+ __u32 id, start, end;
+ int i;
- linkea_buf.lb_buf = ldata.ld_buf->lb_buf;
- linkea_buf.lb_len = ldata.ld_leh->leh_len;
- rc = lod_sub_object_xattr_set(env, dto, &linkea_buf,
- XATTR_NAME_LINK, 0, th);
- if (rc != 0)
- GOTO(out, rc);
+ LASSERT(lo->ldo_comp_entries[comp_idx].llc_id == LCME_ID_INVAL);
- rec->rec_fid = lu_object_fid(&dto->do_lu);
- rc = lod_sub_object_index_insert(env, dt_object_child(dt),
- (const struct dt_rec *)rec,
- (const struct dt_key *)stripe_name, th, 0);
- if (rc != 0)
- GOTO(out, rc);
+ lod_obj_inc_layout_gen(lo);
+ id = lo->ldo_layout_gen;
+ if (likely(id <= SEQ_ID_MAX))
+ RETURN(pflr_id(mirror_id, id & SEQ_ID_MASK));
- rc = lod_sub_object_ref_add(env, dt_object_child(dt), th);
- if (rc != 0)
- GOTO(out, rc);
+ /* Layout generation wraps, need to check collisions. */
+ start = id & SEQ_ID_MASK;
+ end = SEQ_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 (pflr_id(mirror_id, id) == lod_comp->llc_id)
+ break;
+ }
+ /* Found the ununsed ID */
+ if (i == lo->ldo_comp_cnt)
+ RETURN(pflr_id(mirror_id, id));
+ }
+ if (end == LCME_ID_MAX) {
+ start = 1;
+ end = min(lo->ldo_layout_gen & LCME_ID_MASK,
+ (__u32)(LCME_ID_MAX - 1));
+ goto again;
}
- if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MASTER_LMV))
- rc = lod_sub_object_xattr_set(env, dt_object_child(dt),
- &lmv_buf, XATTR_NAME_LMV, fl, th);
-out:
- if (slave_lmm != NULL)
- OBD_FREE_PTR(slave_lmm);
-
- RETURN(rc);
+ RETURN(LCME_ID_INVAL);
}
/**
- * Helper function to declare/execute creation of a striped directory
+ * Creation of a striped regular object.
*
- * Called in declare/create object path, prepare striping for a directory
- * and prepare defaults data striping for the objects to be created in
- * that directory. Notice the function calls "declaration" or "execution"
- * methods depending on \a declare param. This is a consequence of the
- * current approach while we don't have natural distributed transactions:
- * we basically execute non-local updates in the declare phase. So, the
- * arguments for the both phases are the same and this is the reason for
- * this function to exist.
+ * The function is called to create the stripe objects for a regular
+ * striped file. This can happen at the initial object creation or
+ * when the caller asks LOD to do so using ->do_xattr_set() method
+ * (so called late striping). Notice all the information are already
+ * prepared in the form of the list of objects (ldo_stripe field).
+ * This is done during declare phase.
*
* \param[in] env execution environment
* \param[in] dt object
* \param[in] attr attributes the stripes will be created with
* \param[in] dof format of stripes (see OSD API description)
* \param[in] th transaction handle
- * \param[in] declare where to call "declare" or "execute" methods
*
* \retval 0 on success
* \retval negative if failed
*/
-static int lod_dir_striping_create_internal(const struct lu_env *env,
- struct dt_object *dt,
- struct lu_attr *attr,
- struct dt_object_format *dof,
- struct thandle *th,
- bool declare)
+int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
+ struct lu_attr *attr, struct dt_object_format *dof,
+ struct thandle *th)
{
- struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *lod_comp;
struct lod_object *lo = lod_dt_obj(dt);
- int rc;
+ __u16 mirror_id;
+ int rc = 0, i, j;
ENTRY;
- if (!LMVEA_DELETE_VALUES(lo->ldo_stripenr,
- lo->ldo_dir_stripe_offset)) {
- struct lmv_user_md_v1 *v1 = info->lti_ea_store;
- int stripe_count = lo->ldo_stripenr;
-
- if (info->lti_ea_store_size < sizeof(*v1)) {
- rc = lod_ea_store_resize(info, sizeof(*v1));
- if (rc != 0)
- RETURN(rc);
- v1 = info->lti_ea_store;
- }
-
- memset(v1, 0, sizeof(*v1));
- v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
- v1->lum_stripe_count = cpu_to_le32(stripe_count);
- v1->lum_stripe_offset =
- cpu_to_le32(lo->ldo_dir_stripe_offset);
+ LASSERT(lo->ldo_comp_cnt != 0 && lo->ldo_comp_entries != NULL);
- info->lti_buf.lb_buf = v1;
- info->lti_buf.lb_len = sizeof(*v1);
+ mirror_id = lo->ldo_mirror_count > 1 ? 1 : 0;
- if (declare)
- rc = lod_declare_xattr_set_lmv(env, dt, attr,
- &info->lti_buf, dof, th);
- else
- rc = lod_xattr_set_lmv(env, dt, &info->lti_buf,
- XATTR_NAME_LMV, 0, th);
- if (rc != 0)
- RETURN(rc);
- }
+ /* create all underlying objects */
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
- /* Transfer default LMV striping from the parent */
- if (lo->ldo_dir_def_striping_set &&
- !LMVEA_DELETE_VALUES(lo->ldo_dir_def_stripenr,
- lo->ldo_dir_def_stripe_offset)) {
- struct lmv_user_md_v1 *v1 = info->lti_ea_store;
- int def_stripe_count = lo->ldo_dir_def_stripenr;
+ if (lod_comp->llc_extent.e_start == 0 && i > 0) /* new mirror */
+ ++mirror_id;
- if (info->lti_ea_store_size < sizeof(*v1)) {
- rc = lod_ea_store_resize(info, sizeof(*v1));
- if (rc != 0)
- RETURN(rc);
- v1 = info->lti_ea_store;
+ if (lod_comp->llc_id == LCME_ID_INVAL) {
+ lod_comp->llc_id = lod_gen_component_id(lo,
+ mirror_id, i);
+ if (lod_comp->llc_id == LCME_ID_INVAL)
+ GOTO(out, rc = -ERANGE);
}
- memset(v1, 0, sizeof(*v1));
- v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
- v1->lum_stripe_count = cpu_to_le32(def_stripe_count);
- v1->lum_stripe_offset =
- cpu_to_le32(lo->ldo_dir_def_stripe_offset);
- v1->lum_hash_type =
- cpu_to_le32(lo->ldo_dir_def_hash_type);
-
- info->lti_buf.lb_buf = v1;
- info->lti_buf.lb_len = sizeof(*v1);
- if (declare)
- rc = lod_dir_declare_xattr_set(env, dt, &info->lti_buf,
- XATTR_NAME_DEFAULT_LMV,
- 0, th);
- else
- rc = lod_xattr_set_default_lmv_on_dir(env, dt,
- &info->lti_buf,
- XATTR_NAME_DEFAULT_LMV, 0,
- th);
- if (rc != 0)
- RETURN(rc);
- }
+ if (lod_comp_inited(lod_comp))
+ continue;
- /* Transfer default LOV striping from the parent */
- if (lo->ldo_def_striping_set &&
- !LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size,
- lo->ldo_def_stripenr,
- lo->ldo_def_stripe_offset,
- lo->ldo_pool)) {
- struct lov_user_md_v3 *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;
- }
+ if (lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
+ lod_comp_set_init(lod_comp);
- 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));
+ if (lov_pattern(lod_comp->llc_pattern) == LOV_PATTERN_MDT)
+ lod_comp_set_init(lod_comp);
- info->lti_buf.lb_buf = v3;
- info->lti_buf.lb_len = sizeof(*v3);
+ if (lod_comp->llc_stripe == NULL)
+ continue;
- if (declare)
- rc = lod_dir_declare_xattr_set(env, dt, &info->lti_buf,
- XATTR_NAME_LOV, 0, th);
- else
- rc = lod_xattr_set_lov_on_dir(env, dt, &info->lti_buf,
- XATTR_NAME_LOV, 0, th);
- if (rc != 0)
- RETURN(rc);
+ LASSERT(lod_comp->llc_stripe_count);
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ struct dt_object *object = lod_comp->llc_stripe[j];
+ LASSERT(object != NULL);
+ rc = lod_sub_create(env, object, attr, NULL, dof, th);
+ if (rc)
+ GOTO(out, rc);
+ }
+ lod_comp_set_init(lod_comp);
}
- RETURN(0);
-}
-
-static int lod_declare_dir_striping_create(const struct lu_env *env,
- struct dt_object *dt,
- struct lu_attr *attr,
- struct dt_object_format *dof,
- struct thandle *th)
-{
- return lod_dir_striping_create_internal(env, dt, attr, dof, th, true);
-}
+ rc = lod_fill_mirrors(lo);
+ if (rc)
+ GOTO(out, rc);
-static int lod_dir_striping_create(const struct lu_env *env,
- struct dt_object *dt,
- struct lu_attr *attr,
- struct dt_object_format *dof,
- struct thandle *th)
-{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
+ rc = lod_generate_and_set_lovea(env, lo, th);
+ if (rc)
+ GOTO(out, rc);
- rc = lod_dir_striping_create_internal(env, dt, attr, dof, th, false);
- if (rc == 0)
- lo->ldo_striping_cached = 1;
+ lo->ldo_comp_cached = 1;
+ RETURN(0);
- return rc;
+out:
+ lod_striping_free(env, lo);
+ RETURN(rc);
}
/**
- * Implementation of dt_object_operations::do_xattr_set.
- *
- * Sets specified extended attribute on the object. Three types of EAs are
- * special:
- * LOV EA - stores striping for a regular file or default striping (when set
- * on a directory)
- * LMV EA - stores a marker for the striped directories
- * DMV EA - stores default directory striping
+ * Implementation of dt_object_operations::do_create.
*
- * When striping is applied to a non-striped existing object (this is called
- * late striping), then LOD notices the caller wants to turn the object into a
- * striped one. The stripe objects are created and appropriate EA is set:
- * LOV EA storing all the stripes directly or LMV EA storing just a small header
- * with striping configuration.
+ * If any of preceeding methods (like ->do_declare_create(),
+ * ->do_ah_init(), etc) chose to create a striped object,
+ * then this method will create the master and the stripes.
*
- * \see dt_object_operations::do_xattr_set() in the API description for details.
+ * \see dt_object_operations::do_create() in the API description for details.
*/
-static int lod_xattr_set(const struct lu_env *env,
- struct dt_object *dt, const struct lu_buf *buf,
- const char *name, int fl, struct thandle *th)
+static int lod_create(const struct lu_env *env, struct dt_object *dt,
+ struct lu_attr *attr, struct dt_allocation_hint *hint,
+ struct dt_object_format *dof, struct thandle *th)
{
- struct dt_object *next = dt_object_child(dt);
- int rc;
+ int rc;
ENTRY;
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
- strcmp(name, XATTR_NAME_LMV) == 0) {
- struct lmv_mds_md_v1 *lmm = buf->lb_buf;
-
- if (lmm != NULL && le32_to_cpu(lmm->lmv_hash_type) &
- LMV_HASH_FLAG_MIGRATION)
- rc = lod_sub_object_xattr_set(env, next, buf, name, fl,
- th);
- else
- rc = lod_dir_striping_create(env, dt, NULL, NULL, th);
-
- RETURN(rc);
- }
-
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
- strcmp(name, XATTR_NAME_LOV) == 0) {
- /* default LOVEA */
- rc = lod_xattr_set_lov_on_dir(env, dt, buf, name, fl, th);
- RETURN(rc);
- } else if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
- strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
- /* default LMVEA */
- rc = lod_xattr_set_default_lmv_on_dir(env, dt, buf, name, fl,
- th);
+ /* create local object */
+ rc = lod_sub_create(env, dt_object_child(dt), attr, hint, dof, th);
+ if (rc != 0)
RETURN(rc);
- } else if (S_ISREG(dt->do_lu.lo_header->loh_attr) &&
- !strcmp(name, XATTR_NAME_LOV)) {
- /* in case of lov EA swap, just set it
- * if not, it is a replay so check striping match what we
- * already have during req replay, declare_xattr_set()
- * defines striping, then create() does the work */
- if (fl & LU_XATTR_REPLACE) {
- /* free stripes, then update disk */
- lod_object_free_striping(env, lod_dt_obj(dt));
- rc = lod_sub_object_xattr_set(env, next, buf, name,
- fl, th);
- } else if (dt_object_remote(dt)) {
- /* This only happens during migration, see
- * mdd_migrate_create(), in which Master MDT will
- * create a remote target object, and only set
- * (migrating) stripe EA on the remote object,
- * and does not need creating each stripes. */
- rc = lod_sub_object_xattr_set(env, next, buf, name,
- fl, th);
- } else {
- rc = lod_striping_create(env, dt, NULL, NULL, th);
- }
- RETURN(rc);
+ if (S_ISREG(dt->do_lu.lo_header->loh_attr) &&
+ lod_obj_is_striped(dt) && dof->u.dof_reg.striped != 0) {
+ LASSERT(lod_dt_obj(dt)->ldo_comp_cached == 0);
+ rc = lod_striped_create(env, dt, attr, dof, th);
}
- /* then all other xattr */
- rc = lod_xattr_set_internal(env, dt, buf, name, fl, th);
-
RETURN(rc);
}
+static inline int
+lod_obj_stripe_destroy_cb(const struct lu_env *env, struct lod_object *lo,
+ struct dt_object *dt, struct thandle *th,
+ int comp_idx, int stripe_idx,
+ struct lod_obj_stripe_cb_data *data)
+{
+ if (data->locd_declare)
+ return lod_sub_declare_destroy(env, dt, th);
+ else if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_SPEOBJ) ||
+ stripe_idx == cfs_fail_val)
+ return lod_sub_destroy(env, dt, th);
+ else
+ return 0;
+}
+
/**
- * Implementation of dt_object_operations::do_declare_xattr_del.
+ * Implementation of dt_object_operations::do_declare_destroy.
*
- * \see dt_object_operations::do_declare_xattr_del() in the API description
+ * If the object is a striped directory, then the function declares reference
+ * removal from the master object (this is an index) to the stripes and declares
+ * destroy of all the stripes. In all the cases, it declares an intention to
+ * destroy the object itself.
+ *
+ * \see dt_object_operations::do_declare_destroy() in the API description
* for details.
*/
-static int lod_declare_xattr_del(const struct lu_env *env,
- struct dt_object *dt, const char *name,
- struct thandle *th)
+static int lod_declare_destroy(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
- int i;
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lod_thread_info *info = lod_env_info(env);
+ char *stripe_name = info->lti_key;
+ int rc, i;
ENTRY;
- rc = lod_sub_object_declare_xattr_del(env, dt_object_child(dt),
- name, th);
- if (rc != 0)
+ /*
+ * load striping information, notice we don't do this when object
+ * is being initialized as we don't need this information till
+ * few specific cases like destroy, chown
+ */
+ rc = lod_striping_load(env, lo);
+ if (rc)
RETURN(rc);
- if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(0);
+ /* declare destroy for all underlying objects */
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ rc = next->do_ops->do_index_try(env, next,
+ &dt_directory_features);
+ if (rc != 0)
+ RETURN(rc);
- /* set xattr to each stripes, if needed */
- rc = lod_load_striping(env, lo);
- if (rc != 0)
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ rc = lod_sub_declare_ref_del(env, next, th);
+ if (rc != 0)
+ RETURN(rc);
+
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)),
+ i);
+ rc = lod_sub_declare_delete(env, next,
+ (const struct dt_key *)stripe_name, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ }
+
+ /*
+ * we declare destroy for the local object
+ */
+ rc = lod_sub_declare_destroy(env, next, th);
+ if (rc)
RETURN(rc);
- if (lo->ldo_stripenr == 0)
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ) ||
+ OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ2))
RETURN(0);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
- rc = lod_sub_object_declare_xattr_del(env, lo->ldo_stripe[i],
- name, th);
- if (rc != 0)
- break;
+ if (!lod_obj_is_striped(dt))
+ RETURN(0);
+
+ /* declare destroy all striped objects */
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ if (lo->ldo_stripe[i] == NULL)
+ continue;
+
+ rc = lod_sub_declare_ref_del(env, lo->ldo_stripe[i],
+ th);
+
+ rc = lod_sub_declare_destroy(env, lo->ldo_stripe[i],
+ th);
+ if (rc != 0)
+ break;
+ }
+ } else {
+ struct lod_obj_stripe_cb_data data = { { 0 } };
+
+ data.locd_declare = true;
+ data.locd_stripe_cb = lod_obj_stripe_destroy_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
RETURN(rc);
}
/**
- * Implementation of dt_object_operations::do_xattr_del.
+ * Implementation of dt_object_operations::do_destroy.
*
- * If EA storing a regular striping is being deleted, then release
- * all the references to the stripe objects in core.
+ * If the object is a striped directory, then the function removes references
+ * from the master object (this is an index) to the stripes and destroys all
+ * the stripes. In all the cases, the function destroys the object itself.
*
- * \see dt_object_operations::do_xattr_del() in the API description for details.
+ * \see dt_object_operations::do_destroy() in the API description for details.
*/
-static int lod_xattr_del(const struct lu_env *env, struct dt_object *dt,
- const char *name, struct thandle *th)
+static int lod_destroy(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
- int i;
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lod_thread_info *info = lod_env_info(env);
+ char *stripe_name = info->lti_key;
+ unsigned int i;
+ int rc;
ENTRY;
- if (!strcmp(name, XATTR_NAME_LOV))
- lod_object_free_striping(env, lod_dt_obj(dt));
+ /* destroy sub-stripe of master object */
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ rc = next->do_ops->do_index_try(env, next,
+ &dt_directory_features);
+ if (rc != 0)
+ RETURN(rc);
- rc = lod_sub_object_xattr_del(env, next, name, th);
- if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ rc = lod_sub_ref_del(env, next, th);
+ if (rc != 0)
+ RETURN(rc);
+
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)),
+ i);
+
+ CDEBUG(D_INFO, DFID" delete stripe %s "DFID"\n",
+ PFID(lu_object_fid(&dt->do_lu)), stripe_name,
+ PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)));
+
+ rc = lod_sub_delete(env, next,
+ (const struct dt_key *)stripe_name, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ }
+
+ rc = lod_sub_destroy(env, next, th);
+ if (rc != 0)
RETURN(rc);
- if (lo->ldo_stripenr == 0)
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ) ||
+ OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ2))
RETURN(0);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
+ if (!lod_obj_is_striped(dt))
+ RETURN(0);
- rc = lod_sub_object_xattr_del(env, lo->ldo_stripe[i], name, th);
- if (rc != 0)
- break;
+ /* destroy all striped objects */
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ if (lo->ldo_stripe[i] == NULL)
+ continue;
+ if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_SPEOBJ) ||
+ i == cfs_fail_val) {
+ dt_write_lock(env, lo->ldo_stripe[i],
+ MOR_TGT_CHILD);
+ rc = lod_sub_ref_del(env, lo->ldo_stripe[i],
+ th);
+ dt_write_unlock(env, lo->ldo_stripe[i]);
+ if (rc != 0)
+ break;
+
+ rc = lod_sub_destroy(env, lo->ldo_stripe[i],
+ th);
+ if (rc != 0)
+ break;
+ }
+ }
+ } else {
+ struct lod_obj_stripe_cb_data data = { { 0 } };
+
+ data.locd_declare = false;
+ data.locd_stripe_cb = lod_obj_stripe_destroy_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
RETURN(rc);
}
/**
- * Implementation of dt_object_operations::do_xattr_list.
+ * Implementation of dt_object_operations::do_declare_ref_add.
*
- * \see dt_object_operations::do_xattr_list() in the API description
+ * \see dt_object_operations::do_declare_ref_add() in the API description
* for details.
*/
-static int lod_xattr_list(const struct lu_env *env,
- struct dt_object *dt, const struct lu_buf *buf)
+static int lod_declare_ref_add(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
{
- return dt_xattr_list(env, dt_object_child(dt), buf);
+ return lod_sub_declare_ref_add(env, dt_object_child(dt), th);
}
/**
- * Initialize a pool the object belongs to.
- *
- * When a striped object is being created, striping configuration
- * may demand the stripes are allocated on a limited set of the
- * targets. These limited sets are known as "pools". So we copy
- * a pool name into the object and later actual creation methods
- * (like lod_object_create()) will use this information to allocate
- * the stripes properly.
+ * Implementation of dt_object_operations::do_ref_add.
*
- * \param[in] o object
- * \param[in] pool pool name
+ * \see dt_object_operations::do_ref_add() in the API description for details.
*/
-int lod_object_set_pool(struct lod_object *o, char *pool)
+static int lod_ref_add(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
{
- int len;
-
- if (o->ldo_pool) {
- len = strlen(o->ldo_pool);
- OBD_FREE(o->ldo_pool, len + 1);
- o->ldo_pool = NULL;
- }
- if (pool) {
- len = strlen(pool);
- OBD_ALLOC(o->ldo_pool, len + 1);
- if (o->ldo_pool == NULL)
- return -ENOMEM;
- strcpy(o->ldo_pool, pool);
- }
- return 0;
+ return lod_sub_ref_add(env, dt_object_child(dt), th);
}
-static inline int lod_object_will_be_striped(int is_reg, const struct lu_fid *fid)
+/**
+ * Implementation of dt_object_operations::do_declare_ref_del.
+ *
+ * \see dt_object_operations::do_declare_ref_del() in the API description
+ * for details.
+ */
+static int lod_declare_ref_del(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
{
- return (is_reg && fid_seq(fid) != FID_SEQ_LOCAL_FILE);
+ return lod_sub_declare_ref_del(env, dt_object_child(dt), th);
}
-
/**
- * Cache default regular striping in the object.
- *
- * To improve performance of striped regular object creation we cache
- * default LOV striping (if it exists) in the parent directory object.
- *
- * \param[in] env execution environment
- * \param[in] lp object
+ * Implementation of dt_object_operations::do_ref_del
*
- * \retval 0 on success
- * \retval negative if failed
+ * \see dt_object_operations::do_ref_del() in the API description for details.
*/
-static int lod_cache_parent_lov_striping(const struct lu_env *env,
- struct lod_object *lp)
-{
- struct lod_thread_info *info = lod_env_info(env);
- struct lov_user_md_v1 *v1 = NULL;
- struct lov_user_md_v3 *v3 = NULL;
- int rc;
- ENTRY;
-
- /* called from MDD without parent being write locked,
- * lock it here */
- dt_write_lock(env, dt_object_child(&lp->ldo_obj), 0);
- rc = lod_get_lov_ea(env, lp);
- if (rc < 0)
- GOTO(unlock, rc);
-
- if (rc < (typeof(rc))sizeof(struct lov_user_md)) {
- /* don't lookup for non-existing or invalid striping */
- lp->ldo_def_striping_set = 0;
- lp->ldo_def_striping_cached = 1;
- lp->ldo_def_stripe_size = 0;
- lp->ldo_def_stripenr = 0;
- lp->ldo_def_stripe_offset = (typeof(v1->lmm_stripe_offset))(-1);
- GOTO(unlock, rc = 0);
- }
-
- rc = 0;
- v1 = info->lti_ea_store;
- if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
- lustre_swab_lov_user_md_v1(v1);
- } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
- v3 = (struct lov_user_md_v3 *)v1;
- lustre_swab_lov_user_md_v3(v3);
- }
-
- if (v1->lmm_magic != LOV_MAGIC_V3 && v1->lmm_magic != LOV_MAGIC_V1)
- GOTO(unlock, rc = 0);
-
- if (v1->lmm_pattern != LOV_PATTERN_RAID0 && v1->lmm_pattern != 0)
- GOTO(unlock, rc = 0);
-
- CDEBUG(D_INFO, DFID" stripe_count=%d stripe_size=%d stripe_offset=%d\n",
- PFID(lu_object_fid(&lp->ldo_obj.do_lu)),
- (int)v1->lmm_stripe_count,
- (int)v1->lmm_stripe_size, (int)v1->lmm_stripe_offset);
-
- lp->ldo_def_stripenr = v1->lmm_stripe_count;
- lp->ldo_def_stripe_size = v1->lmm_stripe_size;
- lp->ldo_def_stripe_offset = v1->lmm_stripe_offset;
- lp->ldo_def_striping_cached = 1;
- lp->ldo_def_striping_set = 1;
- if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
- /* XXX: sanity check here */
- v3 = (struct lov_user_md_v3 *) v1;
- if (v3->lmm_pool_name[0])
- lod_object_set_pool(lp, v3->lmm_pool_name);
- }
- EXIT;
-unlock:
- dt_write_unlock(env, dt_object_child(&lp->ldo_obj));
- return rc;
+static int lod_ref_del(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
+{
+ return lod_sub_ref_del(env, dt_object_child(dt), th);
}
-
/**
- * Cache default directory striping in the object.
- *
- * To improve performance of striped directory creation we cache default
- * directory striping (if it exists) in the parent directory object.
- *
- * \param[in] env execution environment
- * \param[in] lp object
+ * Implementation of dt_object_operations::do_object_sync.
*
- * \retval 0 on success
- * \retval negative if failed
+ * \see dt_object_operations::do_object_sync() in the API description
+ * for details.
*/
-static int lod_cache_parent_lmv_striping(const struct lu_env *env,
- struct lod_object *lp)
+static int lod_object_sync(const struct lu_env *env, struct dt_object *dt,
+ __u64 start, __u64 end)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lmv_user_md_v1 *v1 = NULL;
- int rc;
- ENTRY;
-
- /* called from MDD without parent being write locked,
- * lock it here */
- dt_write_lock(env, dt_object_child(&lp->ldo_obj), 0);
- rc = lod_get_default_lmv_ea(env, lp);
- if (rc < 0)
- GOTO(unlock, rc);
-
- if (rc < (typeof(rc))sizeof(struct lmv_user_md)) {
- /* don't lookup for non-existing or invalid striping */
- lp->ldo_dir_def_striping_set = 0;
- lp->ldo_dir_def_striping_cached = 1;
- lp->ldo_dir_def_stripenr = 0;
- lp->ldo_dir_def_stripe_offset =
- (typeof(v1->lum_stripe_offset))(-1);
- lp->ldo_dir_def_hash_type = LMV_HASH_TYPE_FNV_1A_64;
- GOTO(unlock, rc = 0);
- }
-
- rc = 0;
- v1 = info->lti_ea_store;
-
- lp->ldo_dir_def_stripenr = le32_to_cpu(v1->lum_stripe_count);
- lp->ldo_dir_def_stripe_offset = le32_to_cpu(v1->lum_stripe_offset);
- lp->ldo_dir_def_hash_type = le32_to_cpu(v1->lum_hash_type);
- lp->ldo_dir_def_striping_set = 1;
- lp->ldo_dir_def_striping_cached = 1;
-
- EXIT;
-unlock:
- dt_write_unlock(env, dt_object_child(&lp->ldo_obj));
- return rc;
+ return dt_object_sync(env, dt_object_child(dt), start, end);
}
/**
- * Cache default striping in the object.
- *
- * To improve performance of striped object creation we cache default striping
- * (if it exists) in the parent directory object. We always cache default
- * striping for the regular files (stored in LOV EA) and we cache default
- * striping for the directories if requested by \a child_mode (when a new
- * directory is being created).
+ * Implementation of dt_object_operations::do_object_unlock.
*
- * \param[in] env execution environment
- * \param[in] lp object
- * \param[in] child_mode new object's mode
+ * Used to release LDLM lock(s).
*
- * \retval 0 on success
- * \retval negative if failed
+ * \see dt_object_operations::do_object_unlock() in the API description
+ * for details.
*/
-static int lod_cache_parent_striping(const struct lu_env *env,
- struct lod_object *lp,
- umode_t child_mode)
+static int lod_object_unlock(const struct lu_env *env, struct dt_object *dt,
+ struct ldlm_enqueue_info *einfo,
+ union ldlm_policy_data *policy)
{
- int rc = 0;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lustre_handle_array *slave_locks = einfo->ei_cbdata;
+ int slave_locks_size;
+ int i;
ENTRY;
- if (!lp->ldo_def_striping_cached) {
- /* we haven't tried to get default striping for
- * the directory yet, let's cache it in the object */
- rc = lod_cache_parent_lov_striping(env, lp);
- if (rc != 0)
- RETURN(rc);
- }
+ if (slave_locks == NULL)
+ RETURN(0);
- /* If the parent is on the remote MDT, we should always
- * try to refresh the default stripeEA cache, because we
- * do not cache default striping information for remote
- * object. */
- if (S_ISDIR(child_mode) && (!lp->ldo_dir_def_striping_cached ||
- dt_object_remote(&lp->ldo_obj)))
- rc = lod_cache_parent_lmv_striping(env, lp);
+ LASSERT(S_ISDIR(dt->do_lu.lo_header->loh_attr));
+ LASSERT(lo->ldo_dir_stripe_count > 1);
+ /* Note: for remote lock for single stripe dir, MDT will cancel
+ * the lock by lockh directly */
+ LASSERT(!dt_object_remote(dt_object_child(dt)));
- RETURN(rc);
+ /* locks were unlocked in MDT layer */
+ for (i = 0; i < slave_locks->ha_count; i++)
+ LASSERT(!lustre_handle_is_used(&slave_locks->ha_handles[i]));
+
+ /*
+ * NB, ha_count may not equal to ldo_dir_stripe_count, because dir
+ * layout may change, e.g., shrink dir layout after migration.
+ */
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++)
+ dt_invalidate(env, lo->ldo_stripe[i]);
+
+ slave_locks_size = offsetof(typeof(*slave_locks),
+ ha_handles[slave_locks->ha_count]);
+ OBD_FREE(slave_locks, slave_locks_size);
+ einfo->ei_cbdata = NULL;
+
+ RETURN(0);
}
/**
- * Implementation of dt_object_operations::do_ah_init.
+ * Implementation of dt_object_operations::do_object_lock.
*
- * This method is used to make a decision on the striping configuration for the
- * object being created. It can be taken from the \a parent object if it exists,
- * or filesystem's default. The resulting configuration (number of stripes,
- * stripe size/offset, pool name, etc) is stored in the object itself and will
- * be used by the methods like ->doo_declare_create().
+ * Used to get LDLM lock on the non-striped and striped objects.
*
- * \see dt_object_operations::do_ah_init() in the API description for details.
+ * \see dt_object_operations::do_object_lock() in the API description
+ * for details.
*/
-static void lod_ah_init(const struct lu_env *env,
- struct dt_allocation_hint *ah,
- struct dt_object *parent,
- struct dt_object *child,
- umode_t child_mode)
+static int lod_object_lock(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lustre_handle *lh,
+ struct ldlm_enqueue_info *einfo,
+ union ldlm_policy_data *policy)
{
- struct lod_device *d = lu2lod_dev(child->do_lu.lo_dev);
- struct dt_object *nextp = NULL;
- struct dt_object *nextc;
- struct lod_object *lp = NULL;
- struct lod_object *lc;
- struct lov_desc *desc;
- int rc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int slave_locks_size;
+ struct lustre_handle_array *slave_locks = NULL;
+ int i;
+ int rc;
ENTRY;
- LASSERT(child);
-
- if (likely(parent)) {
- nextp = dt_object_child(parent);
- lp = lod_dt_obj(parent);
- rc = lod_load_striping(env, lp);
- if (rc != 0)
- return;
+ /* remote object lock */
+ if (!einfo->ei_enq_slave) {
+ LASSERT(dt_object_remote(dt));
+ return dt_object_lock(env, dt_object_child(dt), lh, einfo,
+ policy);
}
- nextc = dt_object_child(child);
- lc = lod_dt_obj(child);
-
- LASSERT(lc->ldo_stripenr == 0);
- LASSERT(lc->ldo_stripe == NULL);
-
- /*
- * local object may want some hints
- * in case of late striping creation, ->ah_init()
- * can be called with local object existing
- */
- if (!dt_object_exists(nextc) || dt_object_remote(nextc)) {
- struct dt_object *obj;
-
- obj = (nextp != NULL && dt_object_remote(nextp)) ? NULL : nextp;
- nextc->do_ops->do_ah_init(env, ah, obj, nextc, child_mode);
- }
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(-ENOTDIR);
- if (S_ISDIR(child_mode)) {
- if (lc->ldo_dir_stripe == NULL) {
- OBD_ALLOC_PTR(lc->ldo_dir_stripe);
- if (lc->ldo_dir_stripe == NULL)
- return;
- }
+ rc = lod_striping_load(env, lo);
+ if (rc != 0)
+ RETURN(rc);
- LASSERT(lp != NULL);
- if (lp->ldo_dir_stripe == NULL) {
- OBD_ALLOC_PTR(lp->ldo_dir_stripe);
- if (lp->ldo_dir_stripe == NULL)
- return;
- }
+ /* No stripes */
+ if (lo->ldo_dir_stripe_count <= 1)
+ RETURN(0);
- rc = lod_cache_parent_striping(env, lp, child_mode);
- if (rc != 0)
- return;
+ slave_locks_size = offsetof(typeof(*slave_locks),
+ ha_handles[lo->ldo_dir_stripe_count]);
+ /* Freed in lod_object_unlock */
+ OBD_ALLOC(slave_locks, slave_locks_size);
+ if (!slave_locks)
+ RETURN(-ENOMEM);
+ slave_locks->ha_count = lo->ldo_dir_stripe_count;
- /* transfer defaults to new directory */
- if (lp->ldo_def_striping_set) {
- if (lp->ldo_pool)
- lod_object_set_pool(lc, lp->ldo_pool);
- lc->ldo_def_stripenr = lp->ldo_def_stripenr;
- lc->ldo_def_stripe_size = lp->ldo_def_stripe_size;
- lc->ldo_def_stripe_offset = lp->ldo_def_stripe_offset;
- lc->ldo_def_striping_set = 1;
- lc->ldo_def_striping_cached = 1;
- CDEBUG(D_OTHER, "inherite EA sz:%d off:%d nr:%d\n",
- (int)lc->ldo_def_stripe_size,
- (int)lc->ldo_def_stripe_offset,
- (int)lc->ldo_def_stripenr);
- }
+ /* striped directory lock */
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ struct lustre_handle lockh;
+ struct ldlm_res_id *res_id;
- /* transfer dir defaults to new directory */
- if (lp->ldo_dir_def_striping_set) {
- lc->ldo_dir_def_stripenr = lp->ldo_dir_def_stripenr;
- lc->ldo_dir_def_stripe_offset =
- lp->ldo_dir_def_stripe_offset;
- lc->ldo_dir_def_hash_type =
- lp->ldo_dir_def_hash_type;
- lc->ldo_dir_def_striping_set = 1;
- lc->ldo_dir_def_striping_cached = 1;
- CDEBUG(D_INFO, "inherit default EA nr:%d off:%d t%u\n",
- (int)lc->ldo_dir_def_stripenr,
- (int)lc->ldo_dir_def_stripe_offset,
- lc->ldo_dir_def_hash_type);
- }
+ res_id = &lod_env_info(env)->lti_res_id;
+ fid_build_reg_res_name(lu_object_fid(&lo->ldo_stripe[i]->do_lu),
+ res_id);
+ einfo->ei_res_id = res_id;
- /* It should always honour the specified stripes */
- if (ah->dah_eadata != NULL && ah->dah_eadata_len != 0) {
- const struct lmv_user_md_v1 *lum1 = ah->dah_eadata;
-
- rc = lod_verify_md_striping(d, lum1);
- if (rc == 0 &&
- le32_to_cpu(lum1->lum_stripe_count) > 1) {
- /* Directory will be striped only if
- * stripe_count > 1 */
- lc->ldo_stripenr =
- le32_to_cpu(lum1->lum_stripe_count);
- lc->ldo_dir_stripe_offset =
- le32_to_cpu(lum1->lum_stripe_offset);
- lc->ldo_dir_hash_type =
- le32_to_cpu(lum1->lum_hash_type);
- CDEBUG(D_INFO, "set stripe EA nr:%hu off:%d\n",
- lc->ldo_stripenr,
- (int)lc->ldo_dir_stripe_offset);
- }
- /* then check whether there is default stripes from parent */
- } else if (lp->ldo_dir_def_striping_set) {
- /* If there are default dir stripe from parent */
- lc->ldo_stripenr = lp->ldo_dir_def_stripenr;
- lc->ldo_dir_stripe_offset =
- lp->ldo_dir_def_stripe_offset;
- lc->ldo_dir_hash_type =
- lp->ldo_dir_def_hash_type;
- CDEBUG(D_INFO, "inherit EA nr:%hu off:%d\n",
- lc->ldo_stripenr,
- (int)lc->ldo_dir_stripe_offset);
+ LASSERT(lo->ldo_stripe[i] != NULL);
+ if (dt_object_remote(lo->ldo_stripe[i])) {
+ set_bit(i, (void *)slave_locks->ha_map);
+ rc = dt_object_lock(env, lo->ldo_stripe[i], &lockh,
+ einfo, policy);
} else {
- /* set default stripe for this directory */
- lc->ldo_stripenr = 0;
- lc->ldo_dir_stripe_offset = -1;
+ struct ldlm_namespace *ns = einfo->ei_namespace;
+ ldlm_blocking_callback blocking = einfo->ei_cb_local_bl;
+ ldlm_completion_callback completion = einfo->ei_cb_cp;
+ __u64 dlmflags = LDLM_FL_ATOMIC_CB;
+
+ if (einfo->ei_mode == LCK_PW ||
+ einfo->ei_mode == LCK_EX)
+ dlmflags |= LDLM_FL_COS_INCOMPAT;
+
+ LASSERT(ns != NULL);
+ rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS,
+ policy, einfo->ei_mode,
+ &dlmflags, blocking,
+ completion, NULL,
+ NULL, 0, LVB_T_NONE,
+ NULL, &lockh);
}
-
- CDEBUG(D_INFO, "final striping count:%hu, offset:%d\n",
- lc->ldo_stripenr, (int)lc->ldo_dir_stripe_offset);
-
- goto out;
- }
-
- /*
- * if object is going to be striped over OSTs, transfer default
- * striping information to the child, so that we can use it
- * during declaration and creation
- */
- if (!lod_object_will_be_striped(S_ISREG(child_mode),
- lu_object_fid(&child->do_lu)))
- goto out;
- /*
- * try from the parent
- */
- if (likely(parent)) {
- lod_cache_parent_striping(env, lp, child_mode);
-
- lc->ldo_def_stripe_offset = LOV_OFFSET_DEFAULT;
-
- if (lp->ldo_def_striping_set) {
- if (lp->ldo_pool)
- lod_object_set_pool(lc, lp->ldo_pool);
- lc->ldo_stripenr = lp->ldo_def_stripenr;
- lc->ldo_stripe_size = lp->ldo_def_stripe_size;
- lc->ldo_def_stripe_offset = lp->ldo_def_stripe_offset;
- CDEBUG(D_OTHER, "striping from parent: #%d, sz %d %s\n",
- lc->ldo_stripenr, lc->ldo_stripe_size,
- lp->ldo_pool ? lp->ldo_pool : "");
+ if (rc) {
+ while (i--)
+ ldlm_lock_decref_and_cancel(
+ &slave_locks->ha_handles[i],
+ einfo->ei_mode);
+ OBD_FREE(slave_locks, slave_locks_size);
+ RETURN(rc);
}
+ slave_locks->ha_handles[i] = lockh;
}
+ einfo->ei_cbdata = slave_locks;
- /*
- * if the parent doesn't provide with specific pattern, grab fs-wide one
- */
- desc = &d->lod_desc;
- if (lc->ldo_stripenr == 0)
- lc->ldo_stripenr = desc->ld_default_stripe_count;
- if (lc->ldo_stripe_size == 0)
- lc->ldo_stripe_size = desc->ld_default_stripe_size;
- CDEBUG(D_OTHER, "final striping: # %d stripes, sz %d from %s\n",
- lc->ldo_stripenr, lc->ldo_stripe_size,
- lc->ldo_pool ? lc->ldo_pool : "");
-
-out:
- /* we do not cache stripe information for slave stripe, see
- * lod_xattr_set_lov_on_dir */
- if (lp != NULL && lp->ldo_dir_slave_stripe)
- lod_lov_stripe_cache_clear(lp);
-
- EXIT;
+ RETURN(0);
}
-#define ll_do_div64(aaa,bbb) do_div((aaa), (bbb))
/**
- * Size initialization on late striping.
- *
- * Propagate the size of a truncated object to a deferred striping.
- * This function handles a special case when truncate was done on a
- * non-striped object and now while the striping is being created
- * we can't lose that size, so we have to propagate it to the stripes
- * being created.
- *
- * \param[in] env execution environment
- * \param[in] dt object
- * \param[in] th transaction handle
+ * Implementation of dt_object_operations::do_invalidate.
*
- * \retval 0 on success
- * \retval negative if failed
+ * \see dt_object_operations::do_invalidate() in the API description for details
*/
-static int lod_declare_init_size(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
+static int lod_invalidate(const struct lu_env *env, struct dt_object *dt)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
- struct lu_attr *attr = &lod_env_info(env)->lti_attr;
- uint64_t size, offs;
- int rc, stripe;
- ENTRY;
+ return dt_invalidate(env, dt_object_child(dt));
+}
- /* XXX: we support the simplest (RAID0) striping so far */
- LASSERT(lo->ldo_stripe || lo->ldo_stripenr == 0);
- LASSERT(lo->ldo_stripe_size > 0);
+static int lod_layout_data_init(struct lod_thread_info *info, __u32 comp_cnt)
+{
+ ENTRY;
- rc = dt_attr_get(env, next, attr);
- LASSERT(attr->la_valid & LA_SIZE);
- if (rc)
- RETURN(rc);
+ /* clear memory region that will be used for layout change */
+ memset(&info->lti_layout_attr, 0, sizeof(struct lu_attr));
+ info->lti_count = 0;
- size = attr->la_size;
- if (size == 0)
+ if (info->lti_comp_size >= comp_cnt)
RETURN(0);
- /* ll_do_div64(a, b) returns a % b, and a = a / b */
- ll_do_div64(size, (__u64) lo->ldo_stripe_size);
- stripe = ll_do_div64(size, (__u64) lo->ldo_stripenr);
+ if (info->lti_comp_size > 0) {
+ OBD_FREE(info->lti_comp_idx,
+ info->lti_comp_size * sizeof(__u32));
+ info->lti_comp_size = 0;
+ }
+
+ OBD_ALLOC(info->lti_comp_idx, comp_cnt * sizeof(__u32));
+ if (!info->lti_comp_idx)
+ RETURN(-ENOMEM);
- size = size * lo->ldo_stripe_size;
- offs = attr->la_size;
- size += ll_do_div64(offs, lo->ldo_stripe_size);
+ info->lti_comp_size = comp_cnt;
+ RETURN(0);
+}
- attr->la_valid = LA_SIZE;
- attr->la_size = size;
+static int lod_declare_instantiate_components(const struct lu_env *env,
+ struct lod_object *lo, struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ int i;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(info->lti_count < lo->ldo_comp_cnt);
+
+ for (i = 0; i < info->lti_count; i++) {
+ rc = lod_qos_prep_create(env, lo, NULL, th,
+ info->lti_comp_idx[i]);
+ if (rc)
+ break;
+ }
- rc = lod_sub_object_declare_attr_set(env, lo->ldo_stripe[stripe], attr,
- th);
+ if (!rc) {
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ rc = lod_sub_declare_xattr_set(env, lod_object_child(lo),
+ &info->lti_buf, XATTR_NAME_LOV, 0, th);
+ }
RETURN(rc);
}
-/**
- * Declare creation of striped object.
- *
- * The function declares creation stripes for a regular object. The function
- * also declares whether the stripes will be created with non-zero size if
- * previously size was set non-zero on the master object. If object \a dt is
- * not local, then only fully defined striping can be applied in \a lovea.
- * Otherwise \a lovea can be in the form of pattern, see lod_qos_parse_config()
- * for the details.
- *
- * \param[in] env execution environment
- * \param[in] dt object
- * \param[in] attr attributes the stripes will be created with
- * \param[in] lovea a buffer containing striping description
- * \param[in] th transaction handle
- *
- * \retval 0 on success
- * \retval negative if failed
- */
-int lod_declare_striped_object(const struct lu_env *env, struct dt_object *dt,
- struct lu_attr *attr,
- const struct lu_buf *lovea, struct thandle *th)
+static int lod_declare_update_plain(const struct lu_env *env,
+ struct lod_object *lo, struct layout_intent *layout,
+ const struct lu_buf *buf, struct thandle *th)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *d = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_layout_component *lod_comp;
+ struct lov_comp_md_v1 *comp_v1 = NULL;
+ bool replay = false;
+ int i, rc;
ENTRY;
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_ALLOC_OBDO)) {
- /* failed to create striping, let's reset
- * config so that others don't get confused */
- lod_object_free_striping(env, lo);
- GOTO(out, rc = -ENOMEM);
- }
+ LASSERT(lo->ldo_flr_state == LCM_FL_NONE);
- if (!dt_object_remote(next)) {
- /* choose OST and generate appropriate objects */
- rc = lod_qos_prep_create(env, lo, attr, lovea, th);
- if (rc) {
- /* failed to create striping, let's reset
- * config so that others don't get confused */
- lod_object_free_striping(env, lo);
- GOTO(out, rc);
+ /*
+ * In case the client is passing lovea, which only happens during
+ * the replay of layout intent write RPC for now, we may need to
+ * parse the lovea and apply new layout configuration.
+ */
+ if (buf && buf->lb_len) {
+ struct lov_user_md_v1 *v1 = buf->lb_buf;
+
+ if (v1->lmm_magic != (LOV_MAGIC_DEFINED | LOV_MAGIC_COMP_V1) &&
+ v1->lmm_magic != __swab32(LOV_MAGIC_DEFINED |
+ LOV_MAGIC_COMP_V1)) {
+ CERROR("%s: the replay buffer of layout extend "
+ "(magic %#x) does not contain expected "
+ "composite layout.\n",
+ lod2obd(d)->obd_name, v1->lmm_magic);
+ GOTO(out, rc = -EINVAL);
}
- /*
- * declare storage for striping data
- */
- info->lti_buf.lb_len = lov_mds_md_size(lo->ldo_stripenr,
- lo->ldo_pool ? LOV_MAGIC_V3 : LOV_MAGIC_V1);
+ rc = lod_use_defined_striping(env, lo, buf);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
+ GOTO(out, rc);
+ /* old on-disk EA is stored in info->lti_buf */
+ comp_v1 = (struct lov_comp_md_v1 *)info->lti_buf.lb_buf;
+ replay = true;
} else {
- /* LOD can not choose OST objects for remote objects, i.e.
- * stripes must be ready before that. Right now, it can only
- * happen during migrate, i.e. migrate process needs to create
- * remote regular file (mdd_migrate_create), then the migrate
- * process will provide stripeEA. */
- LASSERT(lovea != NULL);
- info->lti_buf = *lovea;
+ /* non replay path */
+ rc = lod_striping_load(env, lo);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ /* Make sure defined layout covers the requested write range. */
+ lod_comp = &lo->ldo_comp_entries[lo->ldo_comp_cnt - 1];
+ if (lo->ldo_comp_cnt > 1 &&
+ lod_comp->llc_extent.e_end != OBD_OBJECT_EOF &&
+ lod_comp->llc_extent.e_end < layout->li_extent.e_end) {
+ CDEBUG(replay ? D_ERROR : D_LAYOUT,
+ "%s: the defined layout [0, %#llx) does not covers "
+ "the write range "DEXT"\n",
+ lod2obd(d)->obd_name, lod_comp->llc_extent.e_end,
+ PEXT(&layout->li_extent));
+ GOTO(out, rc = -EINVAL);
}
- rc = lod_sub_object_declare_xattr_set(env, next, &info->lti_buf,
- XATTR_NAME_LOV, 0, th);
- if (rc)
- GOTO(out, rc);
+ CDEBUG(D_LAYOUT, "%s: "DFID": instantiate components "DEXT"\n",
+ lod2obd(d)->obd_name, PFID(lod_object_fid(lo)),
+ PEXT(&layout->li_extent));
/*
- * if striping is created with local object's size > 0,
- * we have to propagate this size to specific object
- * the case is possible only when local object was created previously
+ * Iterate ld->ldo_comp_entries, find the component whose extent under
+ * the write range and not instantianted.
*/
- if (dt_object_exists(next))
- rc = lod_declare_init_size(env, dt, th);
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (lod_comp->llc_extent.e_start >= layout->li_extent.e_end)
+ break;
+
+ if (!replay) {
+ if (lod_comp_inited(lod_comp))
+ continue;
+ } else {
+ /**
+ * In replay path, lod_comp is the EA passed by
+ * client replay buffer, comp_v1 is the pre-recovery
+ * on-disk EA, we'd sift out those components which
+ * were init-ed in the on-disk EA.
+ */
+ if (le32_to_cpu(comp_v1->lcm_entries[i].lcme_flags) &
+ LCME_FL_INIT)
+ continue;
+ }
+ /*
+ * this component hasn't instantiated in normal path, or during
+ * replay it needs replay the instantiation.
+ */
+
+ /* A released component is being extended */
+ if (lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
+ GOTO(out, rc = -EINVAL);
+
+ LASSERT(info->lti_comp_idx != NULL);
+ info->lti_comp_idx[info->lti_count++] = i;
+ }
+
+ if (info->lti_count == 0)
+ RETURN(-EALREADY);
+ lod_obj_inc_layout_gen(lo);
+ rc = lod_declare_instantiate_components(env, lo, th);
out:
+ if (rc)
+ lod_striping_free(env, lo);
RETURN(rc);
}
+static inline int lod_comp_index(struct lod_object *lo,
+ struct lod_layout_component *lod_comp)
+{
+ LASSERT(lod_comp >= lo->ldo_comp_entries &&
+ lod_comp <= &lo->ldo_comp_entries[lo->ldo_comp_cnt - 1]);
+
+ return lod_comp - lo->ldo_comp_entries;
+}
+
/**
- * Implementation of dt_object_operations::do_declare_create.
- *
- * The method declares creation of a new object. If the object will be striped,
- * then helper functions are called to find FIDs for the stripes, declare
- * creation of the stripes and declare initialization of the striping
- * information to be stored in the master object.
- *
- * \see dt_object_operations::do_declare_create() in the API description
- * for details.
+ * Stale other mirrors by writing extent.
*/
-static int lod_declare_object_create(const struct lu_env *env,
- struct dt_object *dt,
- struct lu_attr *attr,
- struct dt_allocation_hint *hint,
- struct dt_object_format *dof,
- struct thandle *th)
+static void lod_stale_components(struct lod_object *lo, int primary,
+ struct lu_extent *extent)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
- ENTRY;
-
- LASSERT(dof);
- LASSERT(attr);
- LASSERT(th);
+ struct lod_layout_component *pri_comp, *lod_comp;
+ int i;
- /*
- * first of all, we declare creation of local object
- */
- rc = lod_sub_object_declare_create(env, next, attr, hint, dof, th);
- if (rc != 0)
- GOTO(out, rc);
+ /* The writing extent decides which components in the primary
+ * are affected... */
+ CDEBUG(D_LAYOUT, "primary mirror %d, "DEXT"\n", primary, PEXT(extent));
+ lod_foreach_mirror_comp(pri_comp, lo, primary) {
+ if (!lu_extent_is_overlapped(extent, &pri_comp->llc_extent))
+ continue;
- if (dof->dof_type == DFT_SYM)
- dt->do_body_ops = &lod_body_lnk_ops;
+ CDEBUG(D_LAYOUT, "primary comp %u "DEXT"\n",
+ lod_comp_index(lo, pri_comp),
+ PEXT(&pri_comp->llc_extent));
- /*
- * it's lod_ah_init() that has decided the object will be striped
- */
- if (dof->dof_type == DFT_REGULAR) {
- /* callers don't want stripes */
- /* XXX: all tricky interactions with ->ah_make_hint() decided
- * to use striping, then ->declare_create() behaving differently
- * should be cleaned */
- if (dof->u.dof_reg.striped == 0)
- lo->ldo_stripenr = 0;
- if (lo->ldo_stripenr > 0)
- rc = lod_declare_striped_object(env, dt, attr,
- NULL, th);
- } else if (dof->dof_type == DFT_DIR) {
- struct seq_server_site *ss;
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (i == primary)
+ continue;
- ss = lu_site2seq(dt->do_lu.lo_dev->ld_site);
+ /* ... and then stale other components that are
+ * overlapping with primary components */
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lu_extent_is_overlapped(
+ &pri_comp->llc_extent,
+ &lod_comp->llc_extent))
+ continue;
- /* If the parent has default stripeEA, and client
- * did not find it before sending create request,
- * then MDT will return -EREMOTE, and client will
- * retrieve the default stripeEA and re-create the
- * sub directory.
- *
- * Note: if dah_eadata != NULL, it means creating the
- * striped directory with specified stripeEA, then it
- * should ignore the default stripeEA */
- if ((hint == NULL || hint->dah_eadata == NULL) &&
- lo->ldo_dir_stripe_offset != -1 &&
- lo->ldo_dir_stripe_offset != ss->ss_node_id)
- GOTO(out, rc = -EREMOTE);
+ CDEBUG(D_LAYOUT, "stale: %u / %u\n",
+ i, lod_comp_index(lo, lod_comp));
- /* Orphan object (like migrating object) does not have
- * lod_dir_stripe, see lod_ah_init */
- if (lo->ldo_dir_stripe != NULL)
- rc = lod_declare_dir_striping_create(env, dt, attr,
- dof, th);
+ lod_comp->llc_flags |= LCME_FL_STALE;
+ lo->ldo_mirrors[i].lme_stale = 1;
+ }
+ }
}
-out:
- RETURN(rc);
}
/**
- * Creation of a striped regular object.
- *
- * The function is called to create the stripe objects for a regular
- * striped file. This can happen at the initial object creation or
- * when the caller asks LOD to do so using ->do_xattr_set() method
- * (so called late striping). Notice all the information are already
- * prepared in the form of the list of objects (ldo_stripe field).
- * This is done during declare phase.
- *
+ * check an OST's availability
* \param[in] env execution environment
- * \param[in] dt object
- * \param[in] attr attributes the stripes will be created with
- * \param[in] dof format of stripes (see OSD API description)
- * \param[in] th transaction handle
+ * \param[in] lo lod object
+ * \param[in] dt dt object
+ * \param[in] index mirror index
*
- * \retval 0 on success
- * \retval negative if failed
+ * \retval negative if failed
+ * \retval 1 if \a dt is available
+ * \retval 0 if \a dt is not available
*/
-int lod_striping_create(const struct lu_env *env, struct dt_object *dt,
- struct lu_attr *attr, struct dt_object_format *dof,
- struct thandle *th)
+static inline int lod_check_ost_avail(const struct lu_env *env,
+ struct lod_object *lo,
+ struct dt_object *dt, int index)
{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc = 0, i;
- ENTRY;
-
- LASSERT(lo->ldo_striping_cached == 0);
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_tgt_desc *ost;
+ __u32 idx;
+ int type = LU_SEQ_RANGE_OST;
+ int rc;
- /* create all underlying objects */
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
- rc = lod_sub_object_create(env, lo->ldo_stripe[i], attr, NULL,
- dof, th);
- if (rc)
- break;
+ rc = lod_fld_lookup(env, lod, lu_object_fid(&dt->do_lu), &idx, &type);
+ if (rc < 0) {
+ CERROR("%s: can't locate "DFID":rc = %d\n",
+ lod2obd(lod)->obd_name, PFID(lu_object_fid(&dt->do_lu)),
+ rc);
+ return rc;
}
- if (rc == 0) {
- rc = lod_generate_and_set_lovea(env, lo, th);
- if (rc == 0)
- lo->ldo_striping_cached = 1;
+ ost = OST_TGT(lod, idx);
+ if (ost->ltd_statfs.os_state &
+ (OS_STATE_READONLY | OS_STATE_ENOSPC | OS_STATE_ENOINO |
+ OS_STATE_NOPRECREATE) ||
+ ost->ltd_active == 0) {
+ CDEBUG(D_LAYOUT, DFID ": mirror %d OST%d unavail, rc = %d\n",
+ PFID(lod_object_fid(lo)), index, idx, rc);
+ return 0;
}
- RETURN(rc);
+ return 1;
}
/**
- * Implementation of dt_object_operations::do_create.
- *
- * If any of preceeding methods (like ->do_declare_create(),
- * ->do_ah_init(), etc) chose to create a striped object,
- * then this method will create the master and the stripes.
- *
- * \see dt_object_operations::do_create() in the API description for details.
+ * Pick primary mirror for write
+ * \param[in] env execution environment
+ * \param[in] lo object
+ * \param[in] extent write range
*/
-static int lod_object_create(const struct lu_env *env, struct dt_object *dt,
- struct lu_attr *attr,
- struct dt_allocation_hint *hint,
- struct dt_object_format *dof, struct thandle *th)
+static int lod_primary_pick(const struct lu_env *env, struct lod_object *lo,
+ struct lu_extent *extent)
{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ unsigned int seq = 0;
+ struct lod_layout_component *lod_comp;
+ int i, j, rc;
+ int picked = -1, second_pick = -1, third_pick = -1;
ENTRY;
- /* create local object */
- rc = lod_sub_object_create(env, dt_object_child(dt), attr, hint, dof,
- th);
- if (rc != 0)
- RETURN(rc);
+ if (OBD_FAIL_CHECK(OBD_FAIL_FLR_RANDOM_PICK_MIRROR)) {
+ get_random_bytes(&seq, sizeof(seq));
+ seq %= lo->ldo_mirror_count;
+ }
- if (S_ISREG(dt->do_lu.lo_header->loh_attr) &&
- lo->ldo_stripe && dof->u.dof_reg.striped != 0)
- rc = lod_striping_create(env, dt, attr, dof, th);
+ /**
+ * Pick a mirror as the primary, and check the availability of OSTs.
+ *
+ * This algo can be revised later after knowing the topology of
+ * cluster.
+ */
+ lod_qos_statfs_update(env, lod);
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ bool ost_avail = true;
+ int index = (i + seq) % lo->ldo_mirror_count;
+
+ if (lo->ldo_mirrors[index].lme_stale) {
+ CDEBUG(D_LAYOUT, DFID": mirror %d stale\n",
+ PFID(lod_object_fid(lo)), index);
+ continue;
+ }
- RETURN(rc);
+ /* 2nd pick is for the primary mirror containing unavail OST */
+ if (lo->ldo_mirrors[index].lme_primary && second_pick < 0)
+ second_pick = index;
+
+ /* 3rd pick is for non-primary mirror containing unavail OST */
+ if (second_pick < 0 && third_pick < 0)
+ third_pick = index;
+
+ /**
+ * we found a non-primary 1st pick, we'd like to find a
+ * potential pirmary mirror.
+ */
+ if (picked >= 0 && !lo->ldo_mirrors[index].lme_primary)
+ continue;
+
+ /* check the availability of OSTs */
+ lod_foreach_mirror_comp(lod_comp, lo, index) {
+ if (!lod_comp_inited(lod_comp) || !lod_comp->llc_stripe)
+ continue;
+
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ struct dt_object *dt = lod_comp->llc_stripe[j];
+
+ rc = lod_check_ost_avail(env, lo, dt, index);
+ if (rc < 0)
+ RETURN(rc);
+
+ ost_avail = !!rc;
+ if (!ost_avail)
+ break;
+ } /* for all dt object in one component */
+ if (!ost_avail)
+ break;
+ } /* for all components in a mirror */
+
+ /**
+ * the OSTs where allocated objects locates in the components
+ * of the mirror are available.
+ */
+ if (!ost_avail)
+ continue;
+
+ /* this mirror has all OSTs available */
+ picked = index;
+
+ /**
+ * primary with all OSTs are available, this is the perfect
+ * 1st pick.
+ */
+ if (lo->ldo_mirrors[index].lme_primary)
+ break;
+ } /* for all mirrors */
+
+ /* failed to pick a sound mirror, lower our expectation */
+ if (picked < 0)
+ picked = second_pick;
+ if (picked < 0)
+ picked = third_pick;
+ if (picked < 0)
+ RETURN(-ENODATA);
+
+ RETURN(picked);
}
/**
- * Implementation of dt_object_operations::do_declare_destroy.
- *
- * If the object is a striped directory, then the function declares reference
- * removal from the master object (this is an index) to the stripes and declares
- * destroy of all the stripes. In all the cases, it declares an intention to
- * destroy the object itself.
- *
- * \see dt_object_operations::do_declare_destroy() in the API description
- * for details.
+ * figure out the components should be instantiated for resync.
*/
-static int lod_declare_object_destroy(const struct lu_env *env,
- struct dt_object *dt,
- struct thandle *th)
+static int lod_prepare_resync(const struct lu_env *env, struct lod_object *lo,
+ struct lu_extent *extent)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
struct lod_thread_info *info = lod_env_info(env);
- char *stripe_name = info->lti_key;
- int rc, i;
- ENTRY;
+ struct lod_layout_component *lod_comp;
+ unsigned int need_sync = 0;
+ int i;
- /*
- * load striping information, notice we don't do this when object
- * is being initialized as we don't need this information till
- * few specific cases like destroy, chown
+ CDEBUG(D_LAYOUT,
+ DFID": instantiate all stale components in "DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(extent));
+
+ /**
+ * instantiate all components within this extent, even non-stale
+ * components.
*/
- rc = lod_load_striping(env, lo);
- if (rc)
- RETURN(rc);
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (!lo->ldo_mirrors[i].lme_stale)
+ continue;
- /* declare destroy for all underlying objects */
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
- rc = next->do_ops->do_index_try(env, next,
- &dt_directory_features);
- if (rc != 0)
- RETURN(rc);
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lu_extent_is_overlapped(extent,
+ &lod_comp->llc_extent))
+ break;
- for (i = 0; i < lo->ldo_stripenr; i++) {
- rc = lod_sub_object_declare_ref_del(env, next, th);
- if (rc != 0)
- RETURN(rc);
+ need_sync++;
- snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
- PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)),
- i);
- rc = lod_sub_object_declare_delete(env, next,
- (const struct dt_key *)stripe_name, th);
- if (rc != 0)
- RETURN(rc);
+ if (lod_comp_inited(lod_comp))
+ continue;
+
+ CDEBUG(D_LAYOUT, "resync instantiate %d / %d\n",
+ i, lod_comp_index(lo, lod_comp));
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
}
}
- /*
- * we declare destroy for the local object
- */
- rc = lod_sub_object_declare_destroy(env, next, th);
- if (rc)
- RETURN(rc);
+ return need_sync ? 0 : -EALREADY;
+}
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
- RETURN(0);
+static int lod_declare_update_rdonly(const struct lu_env *env,
+ struct lod_object *lo, struct md_layout_change *mlc,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_attr *layout_attr = &info->lti_layout_attr;
+ struct lod_layout_component *lod_comp;
+ struct lu_extent extent = { 0 };
+ int rc;
+ ENTRY;
- /* declare destroy all striped objects */
- for (i = 0; i < lo->ldo_stripenr; i++) {
- if (lo->ldo_stripe[i] == NULL)
- continue;
+ LASSERT(lo->ldo_flr_state == LCM_FL_RDONLY);
+ LASSERT(mlc->mlc_opc == MD_LAYOUT_WRITE ||
+ mlc->mlc_opc == MD_LAYOUT_RESYNC);
+ LASSERT(lo->ldo_mirror_count > 0);
+
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE) {
+ struct layout_intent *layout = mlc->mlc_intent;
+ int picked;
+
+ extent = layout->li_extent;
+ CDEBUG(D_LAYOUT, DFID": trying to write :"DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(&extent));
+
+ picked = lod_primary_pick(env, lo, &extent);
+ if (picked < 0)
+ RETURN(picked);
+
+ CDEBUG(D_LAYOUT, DFID": picked mirror id %u as primary\n",
+ PFID(lod_object_fid(lo)),
+ lo->ldo_mirrors[picked].lme_id);
+
+ if (layout->li_opc == LAYOUT_INTENT_TRUNC) {
+ /**
+ * trunc transfers [0, size) in the intent extent, we'd
+ * stale components overlapping [size, eof).
+ */
+ extent.e_start = extent.e_end;
+ extent.e_end = OBD_OBJECT_EOF;
+ }
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
- rc = lod_sub_object_declare_ref_del(env,
- lo->ldo_stripe[i], th);
+ /* stale overlapping components from other mirrors */
+ lod_stale_components(lo, picked, &extent);
- rc = lod_sub_object_declare_destroy(env, lo->ldo_stripe[i],
- th);
- if (rc != 0)
- break;
+ /* restore truncate intent extent */
+ if (layout->li_opc == LAYOUT_INTENT_TRUNC)
+ extent.e_end = extent.e_start;
+
+ /* instantiate components for the picked mirror, start from 0 */
+ extent.e_start = 0;
+
+ lod_foreach_mirror_comp(lod_comp, lo, picked) {
+ if (!lu_extent_is_overlapped(&extent,
+ &lod_comp->llc_extent))
+ break;
+
+ if (lod_comp_inited(lod_comp))
+ continue;
+
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
+
+ lo->ldo_flr_state = LCM_FL_WRITE_PENDING;
+ } else { /* MD_LAYOUT_RESYNC */
+ int i;
+
+ /**
+ * could contain multiple non-stale mirrors, so we need to
+ * prep uninited all components assuming any non-stale mirror
+ * could be picked as the primary mirror.
+ */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (lo->ldo_mirrors[i].lme_stale)
+ continue;
+
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lod_comp_inited(lod_comp))
+ break;
+
+ if (extent.e_end < lod_comp->llc_extent.e_end)
+ extent.e_end =
+ lod_comp->llc_extent.e_end;
+ }
+ }
+
+ rc = lod_prepare_resync(env, lo, &extent);
+ if (rc)
+ GOTO(out, rc);
+ /* change the file state to SYNC_PENDING */
+ lo->ldo_flr_state = LCM_FL_SYNC_PENDING;
+ }
+
+ /* Reset the layout version once it's becoming too large.
+ * This way it can make sure that the layout version is
+ * monotonously increased in this writing era. */
+ lod_obj_inc_layout_gen(lo);
+ if (lo->ldo_layout_gen > (LCME_ID_MAX >> 1)) {
+ __u32 layout_version;
+
+ cfs_get_random_bytes(&layout_version, sizeof(layout_version));
+ lo->ldo_layout_gen = layout_version & 0xffff;
}
+ rc = lod_declare_instantiate_components(env, lo, th);
+ if (rc)
+ GOTO(out, rc);
+
+ layout_attr->la_valid = LA_LAYOUT_VERSION;
+ layout_attr->la_layout_version = 0; /* set current version */
+ if (mlc->mlc_opc == MD_LAYOUT_RESYNC)
+ layout_attr->la_layout_version = LU_LAYOUT_RESYNC;
+ rc = lod_declare_attr_set(env, &lo->ldo_obj, layout_attr, th);
+ if (rc)
+ GOTO(out, rc);
+
+out:
+ if (rc)
+ lod_striping_free(env, lo);
RETURN(rc);
}
-/**
- * Implementation of dt_object_operations::do_destroy.
- *
- * If the object is a striped directory, then the function removes references
- * from the master object (this is an index) to the stripes and destroys all
- * the stripes. In all the cases, the function destroys the object itself.
- *
- * \see dt_object_operations::do_destroy() in the API description for details.
- */
-static int lod_object_destroy(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
+static int lod_declare_update_write_pending(const struct lu_env *env,
+ struct lod_object *lo, struct md_layout_change *mlc,
+ struct thandle *th)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
struct lod_thread_info *info = lod_env_info(env);
- char *stripe_name = info->lti_key;
- unsigned int i;
- int rc;
+ struct lu_attr *layout_attr = &info->lti_layout_attr;
+ struct lod_layout_component *lod_comp;
+ struct lu_extent extent = { 0 };
+ int primary = -1;
+ int i;
+ int rc;
ENTRY;
- /* destroy sub-stripe of master object */
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
- rc = next->do_ops->do_index_try(env, next,
- &dt_directory_features);
- if (rc != 0)
- RETURN(rc);
+ LASSERT(lo->ldo_flr_state == LCM_FL_WRITE_PENDING);
+ LASSERT(mlc->mlc_opc == MD_LAYOUT_WRITE ||
+ mlc->mlc_opc == MD_LAYOUT_RESYNC);
+
+ /* look for the primary mirror */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (lo->ldo_mirrors[i].lme_stale)
+ continue;
+
+ LASSERTF(primary < 0, DFID " has multiple primary: %u / %u",
+ PFID(lod_object_fid(lo)),
+ lo->ldo_mirrors[i].lme_id,
+ lo->ldo_mirrors[primary].lme_id);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- rc = lod_sub_object_ref_del(env, next, th);
- if (rc != 0)
- RETURN(rc);
+ primary = i;
+ }
+ if (primary < 0) {
+ CERROR(DFID ": doesn't have a primary mirror\n",
+ PFID(lod_object_fid(lo)));
+ GOTO(out, rc = -ENODATA);
+ }
- snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
- PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)),
- i);
+ CDEBUG(D_LAYOUT, DFID": found primary %u\n",
+ PFID(lod_object_fid(lo)), lo->ldo_mirrors[primary].lme_id);
- CDEBUG(D_INFO, DFID" delete stripe %s "DFID"\n",
- PFID(lu_object_fid(&dt->do_lu)), stripe_name,
- PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)));
+ LASSERT(!lo->ldo_mirrors[primary].lme_stale);
- rc = lod_sub_object_delete(env, next,
- (const struct dt_key *)stripe_name, th);
- if (rc != 0)
- RETURN(rc);
+ /* for LAYOUT_WRITE opc, it has to do the following operations:
+ * 1. stale overlapping componets from stale mirrors;
+ * 2. instantiate components of the primary mirror;
+ * 3. transfter layout version to all objects of the primary;
+ *
+ * for LAYOUT_RESYNC opc, it will do:
+ * 1. instantiate components of all stale mirrors;
+ * 2. transfer layout version to all objects to close write era. */
+
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE) {
+ LASSERT(mlc->mlc_intent != NULL);
+
+ extent = mlc->mlc_intent->li_extent;
+
+ CDEBUG(D_LAYOUT, DFID": intent to write: "DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(&extent));
+
+ if (mlc->mlc_intent->li_opc == LAYOUT_INTENT_TRUNC) {
+ /**
+ * trunc transfers [0, size) in the intent extent, we'd
+ * stale components overlapping [size, eof).
+ */
+ extent.e_start = extent.e_end;
+ extent.e_end = OBD_OBJECT_EOF;
}
- }
+ /* 1. stale overlapping components */
+ lod_stale_components(lo, primary, &extent);
- rc = lod_sub_object_destroy(env, next, th);
- if (rc != 0)
- RETURN(rc);
+ /* 2. find out the components need instantiating.
+ * instantiate [0, mlc->mlc_intent->e_end) */
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
- RETURN(0);
+ /* restore truncate intent extent */
+ if (mlc->mlc_intent->li_opc == LAYOUT_INTENT_TRUNC)
+ extent.e_end = extent.e_start;
+ extent.e_start = 0;
- /* destroy all striped objects */
- for (i = 0; i < lo->ldo_stripenr; i++) {
- if (likely(lo->ldo_stripe[i] != NULL) &&
- (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_SPEOBJ) ||
- i == cfs_fail_val)) {
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
- dt_write_lock(env, lo->ldo_stripe[i],
- MOR_TGT_CHILD);
- rc = lod_sub_object_ref_del(env,
- lo->ldo_stripe[i], th);
- dt_write_unlock(env, lo->ldo_stripe[i]);
- if (rc != 0)
- break;
- }
+ lod_foreach_mirror_comp(lod_comp, lo, primary) {
+ if (!lu_extent_is_overlapped(&extent,
+ &lod_comp->llc_extent))
+ break;
- rc = lod_sub_object_destroy(env, lo->ldo_stripe[i], th);
- if (rc != 0)
+ if (lod_comp_inited(lod_comp))
+ continue;
+
+ CDEBUG(D_LAYOUT, "write instantiate %d / %d\n",
+ primary, lod_comp_index(lo, lod_comp));
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
+ } else { /* MD_LAYOUT_RESYNC */
+ lod_foreach_mirror_comp(lod_comp, lo, primary) {
+ if (!lod_comp_inited(lod_comp))
break;
+
+ extent.e_end = lod_comp->llc_extent.e_end;
}
+
+ rc = lod_prepare_resync(env, lo, &extent);
+ if (rc)
+ GOTO(out, rc);
+ /* change the file state to SYNC_PENDING */
+ lo->ldo_flr_state = LCM_FL_SYNC_PENDING;
}
+ rc = lod_declare_instantiate_components(env, lo, th);
+ if (rc)
+ GOTO(out, rc);
+
+ /* 3. transfer layout version to OST objects.
+ * transfer new layout version to OST objects so that stale writes
+ * can be denied. It also ends an era of writing by setting
+ * LU_LAYOUT_RESYNC. Normal client can never use this bit to
+ * send write RPC; only resync RPCs could do it. */
+ layout_attr->la_valid = LA_LAYOUT_VERSION;
+ layout_attr->la_layout_version = 0; /* set current version */
+ if (mlc->mlc_opc == MD_LAYOUT_RESYNC)
+ layout_attr->la_layout_version = LU_LAYOUT_RESYNC;
+ rc = lod_declare_attr_set(env, &lo->ldo_obj, layout_attr, th);
+ if (rc)
+ GOTO(out, rc);
+
+ lod_obj_inc_layout_gen(lo);
+out:
+ if (rc)
+ lod_striping_free(env, lo);
RETURN(rc);
}
-/**
- * Implementation of dt_object_operations::do_declare_ref_add.
- *
- * \see dt_object_operations::do_declare_ref_add() in the API description
- * for details.
- */
-static int lod_declare_ref_add(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
+static int lod_declare_update_sync_pending(const struct lu_env *env,
+ struct lod_object *lo, struct md_layout_change *mlc,
+ struct thandle *th)
{
- return lod_sub_object_declare_ref_add(env, dt_object_child(dt), th);
-}
+ struct lod_thread_info *info = lod_env_info(env);
+ unsigned sync_components = 0;
+ unsigned resync_components = 0;
+ int i;
+ int rc;
+ ENTRY;
-/**
- * Implementation of dt_object_operations::do_ref_add.
- *
- * \see dt_object_operations::do_ref_add() in the API description for details.
- */
-static int lod_ref_add(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
-{
- return lod_sub_object_ref_add(env, dt_object_child(dt), th);
-}
+ LASSERT(lo->ldo_flr_state == LCM_FL_SYNC_PENDING);
+ LASSERT(mlc->mlc_opc == MD_LAYOUT_RESYNC_DONE ||
+ mlc->mlc_opc == MD_LAYOUT_WRITE);
-/**
- * Implementation of dt_object_operations::do_declare_ref_del.
- *
- * \see dt_object_operations::do_declare_ref_del() in the API description
- * for details.
- */
-static int lod_declare_ref_del(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
-{
- return lod_sub_object_declare_ref_del(env, dt_object_child(dt), th);
-}
+ CDEBUG(D_LAYOUT, DFID ": received op %d in sync pending\n",
+ PFID(lod_object_fid(lo)), mlc->mlc_opc);
-/**
- * Implementation of dt_object_operations::do_ref_del
- *
- * \see dt_object_operations::do_ref_del() in the API description for details.
- */
-static int lod_ref_del(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
-{
- return lod_sub_object_ref_del(env, dt_object_child(dt), th);
-}
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE) {
+ CDEBUG(D_LAYOUT, DFID": cocurrent write to sync pending\n",
+ PFID(lod_object_fid(lo)));
-/**
- * Implementation of dt_object_operations::do_object_sync.
- *
- * \see dt_object_operations::do_object_sync() in the API description
- * for details.
- */
-static int lod_object_sync(const struct lu_env *env, struct dt_object *dt,
- __u64 start, __u64 end)
-{
- return dt_object_sync(env, dt_object_child(dt), start, end);
-}
+ lo->ldo_flr_state = LCM_FL_WRITE_PENDING;
+ return lod_declare_update_write_pending(env, lo, mlc, th);
+ }
-struct lod_slave_locks {
- int lsl_lock_count;
- struct lustre_handle lsl_handle[0];
-};
+ /* MD_LAYOUT_RESYNC_DONE */
-/**
- * Release LDLM locks on the stripes of a striped directory.
- *
- * Iterates over all the locks taken on the stripe objects and
- * release them using ->do_object_unlock() method.
- *
- * \param[in] env execution environment
- * \param[in] dt striped object
- * \param[in] einfo lock description
- * \param[in] policy data describing requested lock
- *
- * \retval 0 on success
- * \retval negative if failed
- */
-static int lod_object_unlock_internal(const struct lu_env *env,
- struct dt_object *dt,
- struct ldlm_enqueue_info *einfo,
- ldlm_policy_data_t *policy)
-{
- struct lod_object *lo = lod_dt_obj(dt);
- struct lod_slave_locks *slave_locks = einfo->ei_cbdata;
- int rc = 0;
- int i;
- ENTRY;
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ struct lod_layout_component *lod_comp;
+ int j;
- if (slave_locks == NULL)
- RETURN(0);
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (!(lod_comp->llc_flags & LCME_FL_STALE)) {
+ sync_components++;
+ continue;
+ }
- for (i = 1; i < slave_locks->lsl_lock_count; i++) {
- if (lustre_handle_is_used(&slave_locks->lsl_handle[i])) {
- int rc1;
+ for (j = 0; j < mlc->mlc_resync_count; j++) {
+ if (lod_comp->llc_id != mlc->mlc_resync_ids[j])
+ continue;
- einfo->ei_cbdata = &slave_locks->lsl_handle[i];
- rc1 = dt_object_unlock(env, lo->ldo_stripe[i], einfo,
- policy);
- if (rc1 < 0)
- rc = rc == 0 ? rc1 : rc;
+ mlc->mlc_resync_ids[j] = LCME_ID_INVAL;
+ lod_comp->llc_flags &= ~LCME_FL_STALE;
+ resync_components++;
+ break;
}
}
- RETURN(rc);
-}
-
-/**
- * Implementation of dt_object_operations::do_object_unlock.
- *
- * Used to release LDLM lock(s).
- *
- * \see dt_object_operations::do_object_unlock() in the API description
- * for details.
- */
-static int lod_object_unlock(const struct lu_env *env, struct dt_object *dt,
- struct ldlm_enqueue_info *einfo,
- union ldlm_policy_data *policy)
-{
- struct lod_object *lo = lod_dt_obj(dt);
- struct lod_slave_locks *slave_locks = einfo->ei_cbdata;
- int slave_locks_size;
- int rc;
- ENTRY;
+ /* valid check */
+ for (i = 0; i < mlc->mlc_resync_count; i++) {
+ if (mlc->mlc_resync_ids[i] == LCME_ID_INVAL)
+ continue;
- if (slave_locks == NULL)
- RETURN(0);
+ CDEBUG(D_LAYOUT, DFID": lcme id %u (%d / %zd) not exist "
+ "or already synced\n", PFID(lod_object_fid(lo)),
+ mlc->mlc_resync_ids[i], i, mlc->mlc_resync_count);
+ GOTO(out, rc = -EINVAL);
+ }
- if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(-ENOTDIR);
+ if (!sync_components || (mlc->mlc_resync_count && !resync_components)) {
+ CDEBUG(D_LAYOUT, DFID": no mirror in sync\n",
+ PFID(lod_object_fid(lo)));
- rc = lod_load_striping(env, lo);
- if (rc != 0)
- RETURN(rc);
+ /* tend to return an error code here to prevent
+ * the MDT from setting SoM attribute */
+ GOTO(out, rc = -EINVAL);
+ }
- /* Note: for remote lock for single stripe dir, MDT will cancel
- * the lock by lockh directly */
- if (lo->ldo_stripenr <= 1 && dt_object_remote(dt_object_child(dt)))
- RETURN(0);
+ CDEBUG(D_LAYOUT, DFID": resynced %u/%zu components\n",
+ PFID(lod_object_fid(lo)),
+ resync_components, mlc->mlc_resync_count);
- /* Only cancel slave lock for striped dir */
- rc = lod_object_unlock_internal(env, dt, einfo, policy);
+ lo->ldo_flr_state = LCM_FL_RDONLY;
+ lod_obj_inc_layout_gen(lo);
- slave_locks_size = sizeof(*slave_locks) + slave_locks->lsl_lock_count *
- sizeof(slave_locks->lsl_handle[0]);
- OBD_FREE(slave_locks, slave_locks_size);
- einfo->ei_cbdata = NULL;
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ rc = lod_sub_declare_xattr_set(env, lod_object_child(lo),
+ &info->lti_buf, XATTR_NAME_LOV, 0, th);
+ EXIT;
+out:
+ if (rc)
+ lod_striping_free(env, lo);
RETURN(rc);
}
-/**
- * Implementation of dt_object_operations::do_object_lock.
- *
- * Used to get LDLM lock on the non-striped and striped objects.
- *
- * \see dt_object_operations::do_object_lock() in the API description
- * for details.
- */
-static int lod_object_lock(const struct lu_env *env,
- struct dt_object *dt,
- struct lustre_handle *lh,
- struct ldlm_enqueue_info *einfo,
- union ldlm_policy_data *policy)
+static int lod_declare_layout_change(const struct lu_env *env,
+ struct dt_object *dt, struct md_layout_change *mlc,
+ struct thandle *th)
{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc = 0;
- int i;
- int slave_locks_size;
- struct lod_slave_locks *slave_locks = NULL;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
ENTRY;
- /* remote object lock */
- if (!einfo->ei_enq_slave) {
- LASSERT(dt_object_remote(dt));
- return dt_object_lock(env, dt_object_child(dt), lh, einfo,
- policy);
- }
-
- if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(-ENOTDIR);
-
- rc = lod_load_striping(env, lo);
- if (rc != 0)
- RETURN(rc);
-
- /* No stripes */
- if (lo->ldo_stripenr <= 1)
- RETURN(0);
+ if (!S_ISREG(dt->do_lu.lo_header->loh_attr) || !dt_object_exists(dt) ||
+ dt_object_remote(dt_object_child(dt)))
+ RETURN(-EINVAL);
- slave_locks_size = sizeof(*slave_locks) + lo->ldo_stripenr *
- sizeof(slave_locks->lsl_handle[0]);
- /* Freed in lod_object_unlock */
- OBD_ALLOC(slave_locks, slave_locks_size);
- if (slave_locks == NULL)
- RETURN(-ENOMEM);
- slave_locks->lsl_lock_count = lo->ldo_stripenr;
+ rc = lod_striping_load(env, lo);
+ if (rc)
+ GOTO(out, rc);
- /* striped directory lock */
- for (i = 1; i < lo->ldo_stripenr; i++) {
- struct lustre_handle lockh;
- struct ldlm_res_id *res_id;
+ LASSERT(lo->ldo_comp_cnt > 0);
- res_id = &lod_env_info(env)->lti_res_id;
- fid_build_reg_res_name(lu_object_fid(&lo->ldo_stripe[i]->do_lu),
- res_id);
- einfo->ei_res_id = res_id;
+ rc = lod_layout_data_init(info, lo->ldo_comp_cnt);
+ if (rc)
+ GOTO(out, rc);
- LASSERT(lo->ldo_stripe[i]);
- rc = dt_object_lock(env, lo->ldo_stripe[i], &lockh, einfo,
- policy);
- if (rc != 0)
- GOTO(out, rc);
- slave_locks->lsl_handle[i] = lockh;
+ switch (lo->ldo_flr_state) {
+ case LCM_FL_NONE:
+ rc = lod_declare_update_plain(env, lo, mlc->mlc_intent,
+ &mlc->mlc_buf, th);
+ break;
+ case LCM_FL_RDONLY:
+ rc = lod_declare_update_rdonly(env, lo, mlc, th);
+ break;
+ case LCM_FL_WRITE_PENDING:
+ rc = lod_declare_update_write_pending(env, lo, mlc, th);
+ break;
+ case LCM_FL_SYNC_PENDING:
+ rc = lod_declare_update_sync_pending(env, lo, mlc, th);
+ break;
+ default:
+ rc = -ENOTSUPP;
+ break;
}
+out:
+ RETURN(rc);
+}
- einfo->ei_cbdata = slave_locks;
+/**
+ * Instantiate layout component objects which covers the intent write offset.
+ */
+static int lod_layout_change(const struct lu_env *env, struct dt_object *dt,
+ struct md_layout_change *mlc, struct thandle *th)
+{
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ struct lu_attr *layout_attr = &lod_env_info(env)->lti_layout_attr;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
-out:
- if (rc != 0 && slave_locks != NULL) {
- einfo->ei_cbdata = slave_locks;
- lod_object_unlock_internal(env, dt, einfo, policy);
- OBD_FREE(slave_locks, slave_locks_size);
- einfo->ei_cbdata = NULL;
+ rc = lod_striped_create(env, dt, attr, NULL, th);
+ if (!rc && layout_attr->la_valid & LA_LAYOUT_VERSION) {
+ layout_attr->la_layout_version |= lo->ldo_layout_gen;
+ rc = lod_attr_set(env, dt, layout_attr, th);
}
- RETURN(rc);
+ return rc;
}
struct dt_object_operations lod_obj_ops = {
- .do_read_lock = lod_object_read_lock,
- .do_write_lock = lod_object_write_lock,
- .do_read_unlock = lod_object_read_unlock,
- .do_write_unlock = lod_object_write_unlock,
- .do_write_locked = lod_object_write_locked,
+ .do_read_lock = lod_read_lock,
+ .do_write_lock = lod_write_lock,
+ .do_read_unlock = lod_read_unlock,
+ .do_write_unlock = lod_write_unlock,
+ .do_write_locked = lod_write_locked,
.do_attr_get = lod_attr_get,
.do_declare_attr_set = lod_declare_attr_set,
.do_attr_set = lod_attr_set,
.do_xattr_del = lod_xattr_del,
.do_xattr_list = lod_xattr_list,
.do_ah_init = lod_ah_init,
- .do_declare_create = lod_declare_object_create,
- .do_create = lod_object_create,
- .do_declare_destroy = lod_declare_object_destroy,
- .do_destroy = lod_object_destroy,
+ .do_declare_create = lod_declare_create,
+ .do_create = lod_create,
+ .do_declare_destroy = lod_declare_destroy,
+ .do_destroy = lod_destroy,
.do_index_try = lod_index_try,
.do_declare_ref_add = lod_declare_ref_add,
.do_ref_add = lod_ref_add,
.do_object_sync = lod_object_sync,
.do_object_lock = lod_object_lock,
.do_object_unlock = lod_object_unlock,
+ .do_invalidate = lod_invalidate,
+ .do_declare_layout_change = lod_declare_layout_change,
+ .do_layout_change = lod_layout_change,
};
/**
struct lu_buf *buf, loff_t *pos)
{
struct dt_object *next = dt_object_child(dt);
+
+ LASSERT(S_ISREG(dt->do_lu.lo_header->loh_attr) ||
+ S_ISLNK(dt->do_lu.lo_header->loh_attr));
return next->do_body_ops->dbo_read(env, next, buf, pos);
}
const struct lu_buf *buf, loff_t pos,
struct thandle *th)
{
- return lod_sub_object_declare_write(env, dt_object_child(dt), buf, pos,
- th);
+ return lod_sub_declare_write(env, dt_object_child(dt), buf, pos, th);
}
/**
const struct lu_buf *buf, loff_t *pos,
struct thandle *th, int iq)
{
- return lod_sub_object_write(env, dt_object_child(dt), buf, pos, th, iq);
+ LASSERT(S_ISREG(dt->do_lu.lo_header->loh_attr) ||
+ S_ISLNK(dt->do_lu.lo_header->loh_attr));
+ return lod_sub_write(env, dt_object_child(dt), buf, pos, th, iq);
+}
+
+static int lod_declare_punch(const struct lu_env *env, struct dt_object *dt,
+ __u64 start, __u64 end, struct thandle *th)
+{
+ if (dt_object_remote(dt))
+ return -ENOTSUPP;
+
+ return lod_sub_declare_punch(env, dt_object_child(dt), start, end, th);
+}
+
+static int lod_punch(const struct lu_env *env, struct dt_object *dt,
+ __u64 start, __u64 end, struct thandle *th)
+{
+ if (dt_object_remote(dt))
+ return -ENOTSUPP;
+
+ LASSERT(S_ISREG(dt->do_lu.lo_header->loh_attr));
+ return lod_sub_punch(env, dt_object_child(dt), start, end, th);
}
-static const struct dt_body_operations lod_body_lnk_ops = {
+/*
+ * different type of files use the same body_ops because object may be created
+ * in OUT, where there is no chance to set correct body_ops for each type, so
+ * body_ops themselves will check file type inside, see lod_read/write/punch for
+ * details.
+ */
+const struct dt_body_operations lod_body_ops = {
.dbo_read = lod_read,
.dbo_declare_write = lod_declare_write,
- .dbo_write = lod_write
+ .dbo_write = lod_write,
+ .dbo_declare_punch = lod_declare_punch,
+ .dbo_punch = lod_punch,
};
/**
if (unlikely(cobj == NULL))
RETURN(-ENOMEM);
+ lu2lod_obj(lo)->ldo_obj.do_body_ops = &lod_body_ops;
+
lu_object_add(lo, cobj);
RETURN(0);
* \param[in] env execution environment
* \param[in] lo object
*/
-void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo)
+void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo)
{
- int i;
-
- if (lo->ldo_dir_stripe != NULL) {
- OBD_FREE_PTR(lo->ldo_dir_stripe);
- lo->ldo_dir_stripe = NULL;
- }
+ struct lod_layout_component *lod_comp;
+ int i, j;
- if (lo->ldo_stripe) {
- LASSERT(lo->ldo_stripes_allocated > 0);
+ if (lo->ldo_stripe != NULL) {
+ LASSERT(lo->ldo_comp_entries == NULL);
+ LASSERT(lo->ldo_dir_stripes_allocated > 0);
- for (i = 0; i < lo->ldo_stripenr; i++) {
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
if (lo->ldo_stripe[i])
- lu_object_put(env, &lo->ldo_stripe[i]->do_lu);
+ dt_object_put(env, lo->ldo_stripe[i]);
}
- i = sizeof(struct dt_object *) * lo->ldo_stripes_allocated;
- OBD_FREE(lo->ldo_stripe, i);
+ j = sizeof(struct dt_object *) * lo->ldo_dir_stripes_allocated;
+ OBD_FREE(lo->ldo_stripe, j);
lo->ldo_stripe = NULL;
- lo->ldo_stripes_allocated = 0;
+ lo->ldo_dir_stripes_allocated = 0;
+ lo->ldo_dir_stripe_loaded = 0;
+ lo->ldo_dir_stripe_count = 0;
+ } else if (lo->ldo_comp_entries != NULL) {
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ /* free lod_layout_component::llc_stripe array */
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (lod_comp->llc_stripe == NULL)
+ continue;
+ LASSERT(lod_comp->llc_stripes_allocated != 0);
+ for (j = 0; j < lod_comp->llc_stripes_allocated; j++) {
+ if (lod_comp->llc_stripe[j] != NULL)
+ lu_object_put(env,
+ &lod_comp->llc_stripe[j]->do_lu);
+ }
+ OBD_FREE(lod_comp->llc_stripe,
+ sizeof(struct dt_object *) *
+ lod_comp->llc_stripes_allocated);
+ lod_comp->llc_stripe = NULL;
+ OBD_FREE(lod_comp->llc_ost_indices,
+ sizeof(__u32) *
+ lod_comp->llc_stripes_allocated);
+ lod_comp->llc_ost_indices = NULL;
+ lod_comp->llc_stripes_allocated = 0;
+ }
+ lod_free_comp_entries(lo);
+ lo->ldo_comp_cached = 0;
}
- lo->ldo_striping_cached = 0;
- lo->ldo_stripenr = 0;
- lo->ldo_pattern = 0;
}
-/**
- * Implementation of lu_object_operations::loo_object_start.
- *
- * \see lu_object_operations::loo_object_start() in the API description
- * for details.
- */
-static int lod_object_start(const struct lu_env *env, struct lu_object *o)
+void lod_striping_free(const struct lu_env *env, struct lod_object *lo)
{
- if (S_ISLNK(o->lo_header->loh_attr & S_IFMT))
- lu2lod_obj(o)->ldo_obj.do_body_ops = &lod_body_lnk_ops;
- return 0;
+ mutex_lock(&lo->ldo_layout_mutex);
+ lod_striping_free_nolock(env, lo);
+ mutex_unlock(&lo->ldo_layout_mutex);
}
/**
*/
static void lod_object_free(const struct lu_env *env, struct lu_object *o)
{
- struct lod_object *mo = lu2lod_obj(o);
-
- /*
- * release all underlying object pinned
- */
-
- lod_object_free_striping(env, mo);
-
- lod_object_set_pool(mo, NULL);
+ struct lod_object *lo = lu2lod_obj(o);
+ /* release all underlying object pinned */
+ lod_striping_free(env, lo);
lu_object_fini(o);
- OBD_SLAB_FREE_PTR(mo, lod_object_kmem);
+ OBD_SLAB_FREE_PTR(lo, lod_object_kmem);
}
/**
struct lu_object_operations lod_lu_obj_ops = {
.loo_object_init = lod_object_init,
- .loo_object_start = lod_object_start,
.loo_object_free = lod_object_free,
.loo_object_release = lod_object_release,
.loo_object_print = lod_object_print,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff