* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* lustre/lod/lod_object.c
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
#include <obd.h>
#include <lustre_fid.h>
#include <lustre_param.h>
#include <lustre_fid.h>
-#include <obd_lov.h>
+#include <lustre_lmv.h>
+#include <md_object.h>
#include "lod_internal.h"
-extern cfs_mem_cache_t *lod_object_kmem;
+static const char dot[] = ".";
+static const char dotdot[] = "..";
+
+extern struct kmem_cache *lod_object_kmem;
static const struct dt_body_operations lod_body_lnk_ops;
static int lod_index_lookup(const struct lu_env *env, struct dt_object *dt,
struct dt_object *dt, __u32 attr,
struct lustre_capa *capa)
{
- struct dt_object *next = dt_object_child(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_it *it = &lod_env_info(env)->lti_it;
+ struct dt_it *it_next;
+
- return next->do_index_ops->dio_it.init(env, next, attr, capa);
+ it_next = next->do_index_ops->dio_it.init(env, next, attr, capa);
+ if (IS_ERR(it_next))
+ return it_next;
+
+ /* currently we do not use more than one iterator per thread
+ * so we store it in thread info. if at some point we need
+ * more active iterators in a single thread, we can allocate
+ * additional ones */
+ LASSERT(it->lit_obj == NULL);
+
+ it->lit_it = it_next;
+ it->lit_obj = next;
+
+ return (struct dt_it *)it;
}
-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_it = {
- .init = lod_it_init,
- }
-};
+#define LOD_CHECK_IT(env, it) \
+do { \
+ LASSERT((it)->lit_obj != NULL); \
+ LASSERT((it)->lit_it != NULL); \
+} while (0)
-static void lod_object_read_lock(const struct lu_env *env,
- struct dt_object *dt, unsigned role)
+void lod_it_fini(const struct lu_env *env, struct dt_it *di)
{
- dt_read_lock(env, dt_object_child(dt), role);
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ it->lit_obj->do_index_ops->dio_it.fini(env, it->lit_it);
+
+ /* the iterator not in use any more */
+ it->lit_obj = NULL;
+ it->lit_it = NULL;
}
-static void lod_object_write_lock(const struct lu_env *env,
- struct dt_object *dt, unsigned role)
+int lod_it_get(const struct lu_env *env, struct dt_it *di,
+ const struct dt_key *key)
{
- dt_write_lock(env, dt_object_child(dt), role);
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.get(env, it->lit_it, key);
}
-static void lod_object_read_unlock(const struct lu_env *env,
- struct dt_object *dt)
+void lod_it_put(const struct lu_env *env, struct dt_it *di)
{
- dt_read_unlock(env, dt_object_child(dt));
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.put(env, it->lit_it);
}
-static void lod_object_write_unlock(const struct lu_env *env,
- struct dt_object *dt)
+int lod_it_next(const struct lu_env *env, struct dt_it *di)
{
- dt_write_unlock(env, dt_object_child(dt));
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.next(env, it->lit_it);
}
-static int lod_object_write_locked(const struct lu_env *env,
- struct dt_object *dt)
+struct dt_key *lod_it_key(const struct lu_env *env, const struct dt_it *di)
{
- return dt_write_locked(env, dt_object_child(dt));
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.key(env, it->lit_it);
}
-static int lod_attr_get(const struct lu_env *env,
- struct dt_object *dt,
- struct lu_attr *attr,
- struct lustre_capa *capa)
+int lod_it_key_size(const struct lu_env *env, const struct dt_it *di)
{
- return dt_attr_get(env, dt_object_child(dt), attr, capa);
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.key_size(env, it->lit_it);
}
-static int lod_declare_attr_set(const struct lu_env *env,
- struct dt_object *dt,
- const struct lu_attr *attr,
- struct thandle *handle)
+int lod_it_rec(const struct lu_env *env, const struct dt_it *di,
+ struct dt_rec *rec, __u32 attr)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
- int rc, i;
- ENTRY;
+ const struct lod_it *it = (const struct lod_it *)di;
- /*
- * declare setattr on the local object
- */
- rc = dt_declare_attr_set(env, next, attr, handle);
- if (rc)
- RETURN(rc);
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.rec(env, it->lit_it, rec,
+ attr);
+}
- /*
- * 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_load_striping(env, lo);
- if (rc)
- RETURN(rc);
+int lod_it_rec_size(const struct lu_env *env, const struct dt_it *di,
+ __u32 attr)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
- /*
- * if object is striped declare changes on the stripes
- */
- LASSERT(lo->ldo_stripe || lo->ldo_stripenr == 0);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
- rc = dt_declare_attr_set(env, lo->ldo_stripe[i], attr, handle);
- if (rc) {
- CERROR("failed declaration: %d\n", rc);
- break;
- }
- }
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.rec_size(env, it->lit_it,
+ attr);
+}
- RETURN(rc);
+__u64 lod_it_store(const struct lu_env *env, const struct dt_it *di)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.store(env, it->lit_it);
}
-static int lod_attr_set(const struct lu_env *env,
- struct dt_object *dt,
- const struct lu_attr *attr,
- struct thandle *handle,
- struct lustre_capa *capa)
+int lod_it_load(const struct lu_env *env, const struct dt_it *di, __u64 hash)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
- int rc, i;
- ENTRY;
+ const struct lod_it *it = (const struct lod_it *)di;
- /*
- * apply changes to the local object
- */
- rc = dt_attr_set(env, next, attr, handle, capa);
- if (rc)
- RETURN(rc);
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.load(env, it->lit_it, hash);
+}
- /*
- * if object is striped, apply changes to all the stripes
- */
- LASSERT(lo->ldo_stripe || lo->ldo_stripenr == 0);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
- rc = dt_attr_set(env, lo->ldo_stripe[i], attr, handle, capa);
- if (rc) {
- CERROR("failed declaration: %d\n", rc);
- break;
- }
+int lod_it_key_rec(const struct lu_env *env, const struct dt_it *di,
+ void *key_rec)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.key_rec(env, it->lit_it,
+ key_rec);
+}
+
+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_it = {
+ .init = lod_it_init,
+ .fini = lod_it_fini,
+ .get = lod_it_get,
+ .put = lod_it_put,
+ .next = lod_it_next,
+ .key = lod_it_key,
+ .key_size = lod_it_key_size,
+ .rec = lod_it_rec,
+ .rec_size = lod_it_rec_size,
+ .store = lod_it_store,
+ .load = lod_it_load,
+ .key_rec = lod_it_key_rec,
}
+};
- RETURN(rc);
+/**
+ * Implementation of dt_index_operations:: dio_it.init
+ *
+ * This function is to initialize the iterator for striped directory,
+ * basically these lod_striped_it_xxx will just locate the stripe
+ * and call the correspondent api of its next lower layer.
+ *
+ * \param[in] env execution environment.
+ * \param[in] dt the striped directory object to be iterated.
+ * \param[in] attr the attribute of iterator, mostly used to indicate
+ * the entry attribute in the object to be iterated.
+ * \param[in] capa capability(useless in current implementation)
+ *
+ * \retval initialized iterator(dt_it) if successful initialize the
+ * iteration. lit_stripe_index will be used to indicate the
+ * current iterate position among stripes.
+ * \retval ERR pointer if initialization is failed.
+ */
+static struct dt_it *lod_striped_it_init(const struct lu_env *env,
+ struct dt_object *dt, __u32 attr,
+ struct lustre_capa *capa)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next;
+ struct lod_it *it = &lod_env_info(env)->lti_it;
+ struct dt_it *it_next;
+ ENTRY;
+
+ LASSERT(lo->ldo_stripenr > 0);
+ next = lo->ldo_stripe[0];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ it_next = next->do_index_ops->dio_it.init(env, next, attr, capa);
+ if (IS_ERR(it_next))
+ return it_next;
+
+ /* currently we do not use more than one iterator per thread
+ * so we store it in thread info. if at some point we need
+ * more active iterators in a single thread, we can allocate
+ * additional ones */
+ LASSERT(it->lit_obj == NULL);
+
+ it->lit_stripe_index = 0;
+ it->lit_attr = attr;
+ it->lit_it = it_next;
+ it->lit_obj = dt;
+
+ return (struct dt_it *)it;
}
-static int lod_xattr_get(const struct lu_env *env, struct dt_object *dt,
- struct lu_buf *buf, const char *name,
- struct lustre_capa *capa)
+#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); \
+} while (0)
+
+/**
+ * Implementation of dt_index_operations:: dio_it.fini
+ *
+ * This function is to finish the iterator for striped directory.
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for the striped directory
+ *
+ */
+static void lod_striped_it_fini(const struct lu_env *env, struct dt_it *di)
{
- 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_it *it = (struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ next->do_index_ops->dio_it.fini(env, it->lit_it);
+
+ /* the iterator not in use any more */
+ it->lit_obj = NULL;
+ it->lit_it = NULL;
+ it->lit_stripe_index = 0;
+}
+
+/**
+ * Implementation of dt_index_operations:: dio_it.get
+ *
+ * This function is to position the iterator with given key
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ * \param[in] key the key the iterator will be positioned.
+ *
+ * \retval 0 if successfully position iterator by the key.
+ * \retval negative error if position is failed.
+ */
+static int lod_striped_it_get(const struct lu_env *env, struct dt_it *di,
+ const struct dt_key *key)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
ENTRY;
- rc = dt_xattr_get(env, dt_object_child(dt), buf, name, capa);
- if (rc != -ENODATA || !S_ISDIR(dt->do_lu.lo_header->loh_attr & S_IFMT))
- RETURN(rc);
+ LOD_CHECK_STRIPED_IT(env, it, lo);
- /*
- * 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
- * and store it in the config.
- */
- dt_root_get(env, dev->lod_child, &info->lti_fid);
- is_root = lu_fid_eq(&info->lti_fid, lu_object_fid(&dt->do_lu));
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
- if (is_root && strcmp(XATTR_NAME_LOV, name) == 0) {
- struct lov_user_md *lum = buf->lb_buf;
- struct lov_desc *desc = &dev->lod_desc;
+ return next->do_index_ops->dio_it.get(env, it->lit_it, key);
+}
- if (buf->lb_buf == NULL) {
- rc = sizeof(struct lov_user_md_v1);
- } else if (buf->lb_len >= sizeof(struct lov_user_md_v1)) {
- lum->lmm_magic = LOV_USER_MAGIC_V1;
- lum->lmm_object_seq = FID_SEQ_LOV_DEFAULT;
- lum->lmm_pattern = desc->ld_pattern;
- lum->lmm_stripe_size = desc->ld_default_stripe_size;
- lum->lmm_stripe_count = desc->ld_default_stripe_count;
- lum->lmm_stripe_offset = desc->ld_default_stripe_offset;
- rc = sizeof(struct lov_user_md_v1);
- } else {
- rc = -ERANGE;
- }
- }
+/**
+ * Implementation of dt_index_operations:: dio_it.put
+ *
+ * This function is supposed to be the pair of it_get, but currently do
+ * nothing. see (osd_it_ea_put or osd_index_it_put)
+ */
+static void lod_striped_it_put(const struct lu_env *env, struct dt_it *di)
+{
+ struct lod_it *it = (struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
- RETURN(rc);
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ return next->do_index_ops->dio_it.put(env, it->lit_it);
}
-/*
- * LOV xattr is a storage for striping, and LOD owns this xattr.
- * but LOD allows others to control striping to some extent
- * - to reset strping
- * - to set new defined striping
- * - to set new semi-defined striping
- * - number of stripes is defined
- * - number of stripes + osts are defined
- * - ??
+/**
+ * Implementation of dt_index_operations:: dio_it.next
+ *
+ * This function is to position the iterator to the next entry, if current
+ * stripe is finished by checking the return value of next() in current
+ * stripe. it will go to next stripe. In the mean time, the sub-iterator
+ * for next stripe needs to be initialized.
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ *
+ * \retval 0 if successfully position iterator to the next entry.
+ * \retval negative error if position is failed.
*/
-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_striped_it_next(const struct lu_env *env, struct dt_it *di)
{
- struct dt_object *next = dt_object_child(dt);
- struct lu_attr *attr = &lod_env_info(env)->lti_attr;
- __u32 mode;
- int rc;
+ struct lod_it *it = (struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+ struct dt_it *it_next;
+ int rc;
ENTRY;
- /*
- * 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)
- */
- mode = dt->do_lu.lo_header->loh_attr & S_IFMT;
- if ((S_ISREG(mode) || !mode) && !strcmp(name, XATTR_NAME_LOV)) {
- /*
- * this is a request to manipulate object's striping
- */
- if (dt_object_exists(dt)) {
- rc = dt_attr_get(env, next, attr, BYPASS_CAPA);
- 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);
- if (rc)
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+again:
+ rc = next->do_index_ops->dio_it.next(env, it->lit_it);
+ if (rc < 0)
+ RETURN(rc);
+
+ if (rc == 0 && it->lit_stripe_index == 0)
+ RETURN(rc);
+
+ if (rc == 0 && it->lit_stripe_index > 0) {
+ struct lu_dirent *ent;
+
+ ent = (struct lu_dirent *)lod_env_info(env)->lti_key;
+
+ rc = next->do_index_ops->dio_it.rec(env, it->lit_it,
+ (struct dt_rec *)ent,
+ it->lit_attr);
+ if (rc != 0)
RETURN(rc);
+
+ /* skip . and .. for slave stripe */
+ if ((strncmp(ent->lde_name, ".",
+ le16_to_cpu(ent->lde_namelen)) == 0 &&
+ le16_to_cpu(ent->lde_namelen) == 1) ||
+ (strncmp(ent->lde_name, "..",
+ le16_to_cpu(ent->lde_namelen)) == 0 &&
+ le16_to_cpu(ent->lde_namelen) == 2))
+ goto again;
+
+ RETURN(rc);
}
- rc = dt_declare_xattr_set(env, next, buf, name, fl, th);
+ /* go to next stripe */
+ if (it->lit_stripe_index + 1 >= lo->ldo_stripenr)
+ RETURN(1);
+
+ it->lit_stripe_index++;
+
+ next->do_index_ops->dio_it.put(env, it->lit_it);
+ next->do_index_ops->dio_it.fini(env, it->lit_it);
+
+ rc = next->do_ops->do_index_try(env, next, &dt_directory_features);
+ if (rc != 0)
+ RETURN(rc);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ it_next = next->do_index_ops->dio_it.init(env, next, it->lit_attr,
+ BYPASS_CAPA);
+ if (!IS_ERR(it_next)) {
+ it->lit_it = it_next;
+ goto again;
+ } else {
+ rc = PTR_ERR(it_next);
+ }
RETURN(rc);
}
-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 lustre_capa *capa)
+/**
+ * Implementation of dt_index_operations:: dio_it.key
+ *
+ * This function is to get the key of the iterator at current position.
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ *
+ * \retval key(dt_key) if successfully get the key.
+ * \retval negative error if can not get the key.
+ */
+static struct dt_key *lod_striped_it_key(const struct lu_env *env,
+ const struct dt_it *di)
{
- struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *l = lod_dt_obj(dt);
- struct lov_user_md_v1 *lum;
- struct lov_user_md_v3 *v3 = NULL;
- int rc;
- ENTRY;
-
- LASSERT(l->ldo_stripe == NULL);
- l->ldo_striping_cached = 0;
- l->ldo_def_striping_set = 0;
- lod_object_set_pool(l, NULL);
- l->ldo_def_stripe_size = 0;
- l->ldo_def_stripenr = 0;
+ const struct lod_it *it = (const struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
- LASSERT(buf);
- LASSERT(buf->lb_buf);
- lum = buf->lb_buf;
+ LOD_CHECK_STRIPED_IT(env, it, lo);
- rc = lod_verify_striping(d, buf, 0);
- if (rc)
- RETURN(rc);
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
- if (lum->lmm_magic == LOV_USER_MAGIC_V3)
- v3 = buf->lb_buf;
+ return next->do_index_ops->dio_it.key(env, it->lit_it);
+}
+
+/**
+ * Implementation of dt_index_operations:: dio_it.key_size
+ *
+ * This function is to get the key_size of current key.
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ *
+ * \retval key_size if successfully get the key_size.
+ * \retval negative error if can not get the key_size.
+ */
+static int lod_striped_it_key_size(const struct lu_env *env,
+ const struct dt_it *di)
+{
+ struct lod_it *it = (struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ return next->do_index_ops->dio_it.key_size(env, it->lit_it);
+}
+
+/**
+ * Implementation of dt_index_operations:: dio_it.rec
+ *
+ * This function is to get the record at current position.
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ * \param[in] attr the attribute of iterator, mostly used to indicate
+ * the entry attribute in the object to be iterated.
+ * \param[out] rec hold the return record.
+ *
+ * \retval 0 if successfully get the entry.
+ * \retval negative error if can not get entry.
+ */
+static int lod_striped_it_rec(const struct lu_env *env, const struct dt_it *di,
+ struct dt_rec *rec, __u32 attr)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ return next->do_index_ops->dio_it.rec(env, it->lit_it, rec, attr);
+}
+
+/**
+ * Implementation of dt_index_operations:: dio_it.rec_size
+ *
+ * This function is to get the record_size at current record.
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ * \param[in] attr the attribute of iterator, mostly used to indicate
+ * the entry attribute in the object to be iterated.
+ *
+ * \retval rec_size if successfully get the entry size.
+ * \retval negative error if can not get entry size.
+ */
+static int lod_striped_it_rec_size(const struct lu_env *env,
+ const struct dt_it *di, __u32 attr)
+{
+ struct lod_it *it = (struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ return next->do_index_ops->dio_it.rec_size(env, it->lit_it, attr);
+}
+
+/**
+ * Implementation of dt_index_operations:: dio_it.store
+ *
+ * This function will a cookie for current position of the iterator head,
+ * so that user can use this cookie to load/start the iterator next time.
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ *
+ * \retval the cookie.
+ */
+static __u64 lod_striped_it_store(const struct lu_env *env,
+ const struct dt_it *di)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ return next->do_index_ops->dio_it.store(env, it->lit_it);
+}
+
+/**
+ * Implementation of dt_index_operations:: dio_it.load
+ *
+ * This function will position the iterator with the given hash(usually
+ * get from store),
+ *
+ * \param[in] env execution environment.
+ * \param[in] di the iterator for striped directory.
+ * \param[in] hash the given hash.
+ *
+ * \retval >0 if successfuly load the iterator to the given position.
+ * \retval <0 if load is failed.
+ */
+static int lod_striped_it_load(const struct lu_env *env,
+ const struct dt_it *di, __u64 hash)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+
+ LOD_CHECK_STRIPED_IT(env, it, lo);
+
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
+
+ return next->do_index_ops->dio_it.load(env, it->lit_it, hash);
+}
+
+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_it = {
+ .init = lod_striped_it_init,
+ .fini = lod_striped_it_fini,
+ .get = lod_striped_it_get,
+ .put = lod_striped_it_put,
+ .next = lod_striped_it_next,
+ .key = lod_striped_it_key,
+ .key_size = lod_striped_it_key_size,
+ .rec = lod_striped_it_rec,
+ .rec_size = lod_striped_it_rec_size,
+ .store = lod_striped_it_store,
+ .load = lod_striped_it_load,
+ }
+};
+
+/**
+ * Implementation of dt_object_operations:: do_index_try
+ *
+ * This function will try to initialize the index api pointer for the
+ * given object, usually it the entry point of the index api. i.e.
+ * the index object should be initialized in index_try, then start
+ * using index api. For striped directory, it will try to initialize
+ * all of its sub_stripes.
+ *
+ * \param[in] env execution environment.
+ * \param[in] dt the index object to be initialized.
+ * \param[in] feat the features of this object, for example fixed or
+ * variable key size etc.
+ *
+ * \retval >0 if the initialization is successful.
+ * \retval <0 if the initialization is failed.
+ */
+static int lod_index_try(const struct lu_env *env, struct dt_object *dt,
+ const struct dt_index_features *feat)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ int rc;
+ ENTRY;
+
+ LASSERT(next->do_ops);
+ LASSERT(next->do_ops->do_index_try);
+
+ rc = lod_load_striping_locked(env, lo);
+ if (rc != 0)
+ RETURN(rc);
+
+ rc = next->do_ops->do_index_try(env, next, feat);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (lo->ldo_stripenr > 0) {
+ int i;
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ if (dt_object_exists(lo->ldo_stripe[i]) == 0)
+ continue;
+ rc = lo->ldo_stripe[i]->do_ops->do_index_try(env,
+ lo->ldo_stripe[i], feat);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ dt->do_index_ops = &lod_striped_index_ops;
+ } else {
+ dt->do_index_ops = &lod_index_ops;
+ }
+
+ RETURN(rc);
+}
+
+static void lod_object_read_lock(const struct lu_env *env,
+ struct dt_object *dt, unsigned role)
+{
+ dt_read_lock(env, dt_object_child(dt), role);
+}
+
+static void lod_object_write_lock(const struct lu_env *env,
+ struct dt_object *dt, unsigned role)
+{
+ dt_write_lock(env, dt_object_child(dt), role);
+}
+
+static void lod_object_read_unlock(const struct lu_env *env,
+ struct dt_object *dt)
+{
+ dt_read_unlock(env, dt_object_child(dt));
+}
+
+static void lod_object_write_unlock(const struct lu_env *env,
+ struct dt_object *dt)
+{
+ dt_write_unlock(env, dt_object_child(dt));
+}
+
+static int lod_object_write_locked(const struct lu_env *env,
+ struct dt_object *dt)
+{
+ return dt_write_locked(env, dt_object_child(dt));
+}
+
+static int lod_attr_get(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lu_attr *attr,
+ struct lustre_capa *capa)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ int i;
+ int rc;
+ ENTRY;
+
+ rc = dt_attr_get(env, dt_object_child(dt), attr, capa);
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr) || rc != 0)
+ RETURN(rc);
+
+ rc = lod_load_striping_locked(env, lo);
+ if (rc)
+ RETURN(rc);
+
+ if (lo->ldo_stripenr == 0)
+ RETURN(rc);
+
+ attr->la_nlink = 2;
+ attr->la_size = 0;
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ struct lu_attr *sub_attr = &lod_env_info(env)->lti_attr;
+
+ LASSERT(lo->ldo_stripe[i]);
+ if (dt_object_exists(lo->ldo_stripe[i]))
+ continue;
+
+ rc = dt_attr_get(env, lo->ldo_stripe[i], sub_attr, capa);
+ if (rc != 0)
+ break;
+
+ /* -2 for . and .. on each stripe */
+ if (sub_attr->la_valid & LA_NLINK && attr->la_valid & LA_NLINK)
+ attr->la_nlink += sub_attr->la_nlink - 2;
+ if (sub_attr->la_valid & LA_SIZE && attr->la_valid & LA_SIZE)
+ attr->la_size += sub_attr->la_size;
+
+ if (sub_attr->la_valid & LA_ATIME &&
+ attr->la_valid & LA_ATIME &&
+ attr->la_atime < sub_attr->la_atime)
+ attr->la_atime = sub_attr->la_atime;
+
+ if (sub_attr->la_valid & LA_CTIME &&
+ attr->la_valid & LA_CTIME &&
+ attr->la_ctime < sub_attr->la_ctime)
+ attr->la_ctime = sub_attr->la_ctime;
+
+ if (sub_attr->la_valid & LA_MTIME &&
+ attr->la_valid & LA_MTIME &&
+ attr->la_mtime < sub_attr->la_mtime)
+ attr->la_mtime = sub_attr->la_mtime;
+ }
+
+ CDEBUG(D_INFO, DFID" stripe_count %d nlink %u size "LPU64"\n",
+ PFID(lu_object_fid(&dt->do_lu)), lo->ldo_stripenr,
+ attr->la_nlink, attr->la_size);
+
+ RETURN(rc);
+}
+
+/**
+ * Mark all of sub-stripes dead of the striped directory.
+ **/
+static int lod_mark_dead_object(const struct lu_env *env,
+ struct dt_object *dt,
+ struct thandle *handle,
+ bool declare)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lmv_mds_md_v1 *lmv;
+ __u32 dead_hash_type;
+ int rc;
+ int i;
+
+ ENTRY;
+
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(0);
+
+ rc = lod_load_striping_locked(env, lo);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (lo->ldo_stripenr == 0)
+ RETURN(0);
+
+ rc = lod_get_lmv_ea(env, lo);
+ if (rc <= 0)
+ RETURN(rc);
+
+ 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 = dt_declare_xattr_set(env, lo->ldo_stripe[i], &buf,
+ XATTR_NAME_LMV,
+ LU_XATTR_REPLACE, handle);
+ } else {
+ rc = dt_xattr_set(env, lo->ldo_stripe[i], &buf,
+ XATTR_NAME_LMV, LU_XATTR_REPLACE,
+ handle, BYPASS_CAPA);
+ }
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+static int lod_declare_attr_set(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_attr *attr,
+ struct thandle *handle)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ 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, handle, true);
+ RETURN(rc);
+ }
+
+ /*
+ * declare setattr on the local object
+ */
+ rc = dt_declare_attr_set(env, next, attr, handle);
+ 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(). */
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ if (!(attr->la_valid & (LA_UID | LA_GID)))
+ RETURN(rc);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_OWNER))
+ RETURN(0);
+ } else {
+ if (!(attr->la_valid & (LA_UID | LA_GID | LA_MODE |
+ LA_ATIME | LA_MTIME | LA_CTIME)))
+ RETURN(rc);
+ }
+ /*
+ * 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_load_striping(env, lo);
+ if (rc)
+ RETURN(rc);
+
+ if (lo->ldo_stripenr == 0)
+ RETURN(0);
+
+ /*
+ * if object is striped declare changes on the stripes
+ */
+ LASSERT(lo->ldo_stripe);
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ if (likely(lo->ldo_stripe[i] != NULL)) {
+ rc = dt_declare_attr_set(env, lo->ldo_stripe[i], attr,
+ handle);
+ if (rc != 0) {
+ CERROR("failed declaration: %d\n", rc);
+ break;
+ }
+ }
+ }
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_STRIPE) &&
+ dt_object_exists(next) != 0 &&
+ dt_object_remote(next) == 0)
+ dt_declare_xattr_del(env, next, XATTR_NAME_LOV, handle);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CHANGE_STRIPE) &&
+ dt_object_exists(next) &&
+ dt_object_remote(next) == 0 && S_ISREG(attr->la_mode)) {
+ 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;
+ dt_declare_xattr_set(env, next, buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle);
+ }
+
+ RETURN(rc);
+}
+
+static int lod_attr_set(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_attr *attr,
+ struct thandle *handle,
+ struct lustre_capa *capa)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ 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, handle, false);
+ RETURN(rc);
+ }
+
+ /*
+ * apply changes to the local object
+ */
+ rc = dt_attr_set(env, next, attr, handle, capa);
+ if (rc)
+ RETURN(rc);
+
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
+ if (!(attr->la_valid & (LA_UID | LA_GID)))
+ RETURN(rc);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_OWNER))
+ RETURN(0);
+ } else {
+ if (!(attr->la_valid & (LA_UID | LA_GID | LA_MODE |
+ LA_ATIME | LA_MTIME | LA_CTIME)))
+ RETURN(rc);
+ }
+
+ if (lo->ldo_stripenr == 0)
+ 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 (likely(lo->ldo_stripe[i] != NULL)) {
+ if (dt_object_exists(lo->ldo_stripe[i]) == 0)
+ continue;
+
+ rc = dt_attr_set(env, lo->ldo_stripe[i], attr,
+ handle, capa);
+ if (rc != 0) {
+ CERROR("failed declaration: %d\n", rc);
+ break;
+ }
+ }
+ }
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_STRIPE) &&
+ dt_object_exists(next) != 0 &&
+ dt_object_remote(next) == 0)
+ dt_xattr_del(env, next, XATTR_NAME_LOV, handle, BYPASS_CAPA);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CHANGE_STRIPE) &&
+ dt_object_exists(next) &&
+ dt_object_remote(next) == 0 && S_ISREG(attr->la_mode)) {
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_buf *buf = &info->lti_buf;
+ struct ost_id *oi = &info->lti_ostid;
+ struct lu_fid *fid = &info->lti_fid;
+ 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)
+ 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_V1)
+ objs = &(lmm->lmm_objects[0]);
+ else
+ objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[0];
+ ostid_le_to_cpu(&objs->l_ost_oi, oi);
+ ostid_to_fid(fid, oi, le32_to_cpu(objs->l_ost_idx));
+ fid->f_oid--;
+ fid_to_ostid(fid, oi);
+ ostid_cpu_to_le(oi, &objs->l_ost_oi);
+ dt_xattr_set(env, next, buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle, BYPASS_CAPA);
+ }
+
+ RETURN(rc);
+}
+
+static int lod_xattr_get(const struct lu_env *env, struct dt_object *dt,
+ struct lu_buf *buf, const char *name,
+ struct lustre_capa *capa)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *dev = lu2lod_dev(dt->do_lu.lo_dev);
+ int rc, is_root;
+ ENTRY;
+
+ rc = dt_xattr_get(env, dt_object_child(dt), buf, name, capa);
+ if (rc != -ENODATA || !S_ISDIR(dt->do_lu.lo_header->loh_attr & S_IFMT))
+ RETURN(rc);
+
+ /*
+ * 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
+ * and store it in the config.
+ */
+ dt_root_get(env, dev->lod_child, &info->lti_fid);
+ is_root = lu_fid_eq(&info->lti_fid, lu_object_fid(&dt->do_lu));
+
+ if (is_root && strcmp(XATTR_NAME_LOV, name) == 0) {
+ struct lov_user_md *lum = buf->lb_buf;
+ struct lov_desc *desc = &dev->lod_desc;
+
+ if (buf->lb_buf == NULL) {
+ rc = sizeof(*lum);
+ } else if (buf->lb_len >= sizeof(*lum)) {
+ lum->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V1);
+ lmm_oi_set_seq(&lum->lmm_oi, FID_SEQ_LOV_DEFAULT);
+ lmm_oi_set_id(&lum->lmm_oi, 0);
+ lmm_oi_cpu_to_le(&lum->lmm_oi, &lum->lmm_oi);
+ lum->lmm_pattern = cpu_to_le32(desc->ld_pattern);
+ lum->lmm_stripe_size = cpu_to_le32(
+ desc->ld_default_stripe_size);
+ lum->lmm_stripe_count = cpu_to_le16(
+ desc->ld_default_stripe_count);
+ lum->lmm_stripe_offset = cpu_to_le16(
+ desc->ld_default_stripe_offset);
+ rc = sizeof(*lum);
+ } else {
+ rc = -ERANGE;
+ }
+ }
+
+ RETURN(rc);
+}
+
+static int lod_verify_md_striping(struct lod_device *lod,
+ const struct lmv_user_md_v1 *lum)
+{
+ int rc = 0;
+ ENTRY;
+
+ if (unlikely(le32_to_cpu(lum->lum_magic) != LMV_USER_MAGIC))
+ GOTO(out, rc = -EINVAL);
+
+ if (unlikely(le32_to_cpu(lum->lum_stripe_count) == 0))
+ GOTO(out, rc = -EINVAL);
+out:
+ if (rc != 0)
+ CERROR("%s: invalid lmv_user_md: magic = %x, "
+ "stripe_offset = %d, stripe_count = %u: rc = %d\n",
+ lod2obd(lod)->obd_name, le32_to_cpu(lum->lum_magic),
+ (int)le32_to_cpu(lum->lum_stripe_offset),
+ le32_to_cpu(lum->lum_stripe_count), rc);
+ return rc;
+}
+
+/**
+ * Master LMVEA will be same as slave LMVEA, except
+ * 1. different magic
+ * 2. No lmv_stripe_fids on slave
+ * 3. lmv_master_mdt_index on slave LMV EA will be stripe_index.
+ */
+static void lod_prep_slave_lmv_md(struct lmv_mds_md_v1 *slave_lmv,
+ const struct lmv_mds_md_v1 *master_lmv)
+{
+ *slave_lmv = *master_lmv;
+ slave_lmv->lmv_magic = cpu_to_le32(LMV_MAGIC_STRIPE);
+}
+
+int lod_prep_lmv_md(const struct lu_env *env, struct dt_object *dt,
+ struct lu_buf *lmv_buf)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lmv_mds_md_v1 *lmm1;
+ int stripe_count;
+ int lmm_size;
+ int type = LU_SEQ_RANGE_ANY;
+ int i;
+ int rc;
+ __u32 mdtidx;
+ ENTRY;
+
+ LASSERT(lo->ldo_dir_striped != 0);
+ LASSERT(lo->ldo_stripenr > 0);
+ stripe_count = lo->ldo_stripenr;
+ lmm_size = lmv_mds_md_size(stripe_count, LMV_MAGIC);
+ if (info->lti_ea_store_size < lmm_size) {
+ rc = lod_ea_store_resize(info, lmm_size);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ lmm1 = (struct lmv_mds_md_v1 *)info->lti_ea_store;
+ lmm1->lmv_magic = cpu_to_le32(LMV_MAGIC);
+ lmm1->lmv_stripe_count = cpu_to_le32(stripe_count);
+ lmm1->lmv_hash_type = cpu_to_le32(lo->ldo_dir_hash_type);
+ rc = lod_fld_lookup(env, lod, lu_object_fid(&dt->do_lu),
+ &mdtidx, &type);
+ if (rc != 0)
+ RETURN(rc);
+
+ lmm1->lmv_master_mdt_index = cpu_to_le32(mdtidx);
+ fid_cpu_to_le(&lmm1->lmv_master_fid, lu_object_fid(&dt->do_lu));
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ struct dt_object *dto;
+
+ dto = lo->ldo_stripe[i];
+ LASSERT(dto != NULL);
+ fid_cpu_to_le(&lmm1->lmv_stripe_fids[i],
+ lu_object_fid(&dto->do_lu));
+ }
+
+ lmv_buf->lb_buf = info->lti_ea_store;
+ lmv_buf->lb_len = lmm_size;
+ lo->ldo_dir_striping_cached = 1;
+
+ RETURN(rc);
+}
+
+int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
+ const struct lu_buf *buf)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_tgt_descs *ltd = &lod->lod_mdt_descs;
+ struct dt_object **stripe;
+ union lmv_mds_md *lmm = buf->lb_buf;
+ struct lmv_mds_md_v1 *lmv1 = &lmm->lmv_md_v1;
+ struct lu_fid *fid = &info->lti_fid;
+ int i;
+ int rc = 0;
+ ENTRY;
+
+ if (le32_to_cpu(lmv1->lmv_hash_type) & LMV_HASH_FLAG_MIGRATION)
+ RETURN(0);
+
+ if (le32_to_cpu(lmv1->lmv_magic) == LMV_MAGIC_STRIPE) {
+ lo->ldo_dir_slave_stripe = 1;
+ RETURN(0);
+ }
+
+ if (le32_to_cpu(lmv1->lmv_magic) != LMV_MAGIC_V1)
+ RETURN(-EINVAL);
+
+ if (le32_to_cpu(lmv1->lmv_stripe_count) <= 1)
+ RETURN(0);
+
+ LASSERT(lo->ldo_stripe == NULL);
+ OBD_ALLOC(stripe, sizeof(stripe[0]) *
+ (le32_to_cpu(lmv1->lmv_stripe_count)));
+ if (stripe == NULL)
+ RETURN(-ENOMEM);
+
+ for (i = 0; i < le32_to_cpu(lmv1->lmv_stripe_count); i++) {
+ struct dt_device *tgt_dt;
+ struct dt_object *dto;
+ int type = LU_SEQ_RANGE_ANY;
+ __u32 idx;
+
+ fid_le_to_cpu(fid, &lmv1->lmv_stripe_fids[i]);
+ if (!fid_is_sane(fid))
+ GOTO(out, rc = -ESTALE);
+
+ rc = lod_fld_lookup(env, lod, fid, &idx, &type);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ if (idx == lod2lu_dev(lod)->ld_site->ld_seq_site->ss_node_id) {
+ tgt_dt = lod->lod_child;
+ } else {
+ struct lod_tgt_desc *tgt;
+
+ tgt = LTD_TGT(ltd, idx);
+ if (tgt == NULL)
+ GOTO(out, rc = -ESTALE);
+ tgt_dt = tgt->ltd_tgt;
+ }
+
+ dto = dt_locate_at(env, tgt_dt, fid,
+ lo->ldo_obj.do_lu.lo_dev->ld_site->ls_top_dev,
+ NULL);
+ if (IS_ERR(dto))
+ GOTO(out, rc = PTR_ERR(dto));
+
+ stripe[i] = dto;
+ }
+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);
+ if (rc != 0)
+ lod_object_free_striping(env, lo);
+
+ RETURN(rc);
+}
+
+static int lod_prep_md_striped_create(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lu_attr *attr,
+ const struct lmv_user_md_v1 *lum,
+ struct dt_object_format *dof,
+ struct thandle *th)
+{
+ struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_tgt_descs *ltd = &lod->lod_mdt_descs;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object **stripe;
+ 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;
+ int stripe_count;
+ int *idx_array;
+ int rc = 0;
+ int i;
+ int j;
+ 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_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(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);
+
+ for (i = 0; i < stripe_count; i++) {
+ struct lod_tgt_desc *tgt = NULL;
+ struct dt_object *dto;
+ struct lu_fid fid = { 0 };
+ int idx;
+ 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 = le32_to_cpu(lum->lum_stripe_offset);
+ 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);
+
+ for (j = 0; j < lod->lod_remote_mdt_count;
+ j++, idx = (idx + 1) % (lod->lod_remote_mdt_count + 1)) {
+ bool already_allocated = false;
+ int k;
+
+ CDEBUG(D_INFO, "try idx %d, mdt cnt %d,"
+ " allocated %d, 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;
+ }
+ }
+
+ if (already_allocated)
+ continue;
+
+ /* check the status of the OSP */
+ tgt = LTD_TGT(ltd, idx);
+ if (tgt == NULL)
+ continue;
+
+ tgt_dt = tgt->ltd_tgt;
+ rc = dt_statfs(env, tgt_dt, NULL);
+ if (rc) {
+ /* this OSP doesn't feel well */
+ rc = 0;
+ continue;
+ }
+
+ rc = obd_fid_alloc(env, tgt->ltd_exp, &fid, NULL);
+ if (rc < 0) {
+ rc = 0;
+ continue;
+ }
+
+ break;
+ }
+
+ /* Can not allocate more stripes */
+ if (j == lod->lod_remote_mdt_count) {
+ CDEBUG(D_INFO, "%s: require stripes %d only get %d\n",
+ lod2obd(lod)->obd_name, stripe_count, i - 1);
+ break;
+ }
+
+ CDEBUG(D_INFO, "idx %d, mdt cnt %d,"
+ " allocated %d, last allocated %d\n", idx,
+ lod->lod_remote_mdt_count, i, idx_array[i - 1]);
+
+next:
+ /* tgt_dt and fid must be ready after search avaible OSP
+ * in the above loop */
+ LASSERT(tgt_dt != NULL);
+ LASSERT(fid_is_sane(&fid));
+ conf.loc_flags = LOC_F_NEW;
+ dto = dt_locate_at(env, tgt_dt, &fid,
+ dt->do_lu.lo_dev->ld_site->ls_top_dev,
+ &conf);
+ 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;
+
+ if (lo->ldo_stripenr == 0)
+ GOTO(out_put, rc = -ENOSPC);
+
+ rc = lod_prep_lmv_md(env, dt, &lmv_buf);
+ if (rc != 0)
+ GOTO(out_put, rc);
+ lmm = lmv_buf.lb_buf;
+
+ OBD_ALLOC_PTR(slave_lmm);
+ if (slave_lmm == NULL)
+ GOTO(out_put, rc = -ENOMEM);
+
+ lod_prep_slave_lmv_md(slave_lmm, lmm);
+ slave_lmv_buf.lb_buf = slave_lmm;
+ slave_lmv_buf.lb_len = sizeof(*slave_lmm);
+
+ if (!dt_try_as_dir(env, dt_object_child(dt)))
+ GOTO(out_put, rc = -EINVAL);
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ struct dt_object *dto = stripe[i];
+ char *stripe_name = info->lti_key;
+
+ rc = dt_declare_create(env, dto, attr, NULL, dof, th);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ if (!dt_try_as_dir(env, dto))
+ GOTO(out_put, rc = -EINVAL);
+
+ rc = dt_declare_insert(env, dto,
+ (const struct dt_rec *)lu_object_fid(&dto->do_lu),
+ (const struct dt_key *)dot, th);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ /* master stripe FID will be put to .. */
+ rc = dt_declare_insert(env, dto,
+ (const struct dt_rec *)lu_object_fid(&dt->do_lu),
+ (const struct dt_key *)dotdot, th);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ /* probably nothing to inherite */
+ if (lo->ldo_striping_cached &&
+ !LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size,
+ lo->ldo_def_stripenr,
+ lo->ldo_def_stripe_offset)) {
+ struct lov_user_md_v3 *v3;
+
+ /* sigh, lti_ea_store has been used for lmv_buf,
+ * so we have to allocate buffer for default
+ * stripe EA */
+ OBD_ALLOC_PTR(v3);
+ if (v3 == NULL)
+ GOTO(out_put, rc = -ENOMEM);
+
+ 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)
+ strncpy(v3->lmm_pool_name, lo->ldo_pool,
+ LOV_MAXPOOLNAME);
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+ rc = dt_declare_xattr_set(env, dto,
+ &info->lti_buf,
+ XATTR_NAME_LOV,
+ 0, th);
+ OBD_FREE_PTR(v3);
+ if (rc != 0)
+ GOTO(out_put, rc);
+ }
+
+ slave_lmm->lmv_master_mdt_index = cpu_to_le32(i);
+ rc = dt_declare_xattr_set(env, dto, &slave_lmv_buf,
+ XATTR_NAME_LMV, 0, th);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&dto->do_lu)), i);
+ rc = dt_declare_insert(env, dt_object_child(dt),
+ (const struct dt_rec *)lu_object_fid(&dto->do_lu),
+ (const struct dt_key *)stripe_name, th);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ rc = dt_declare_ref_add(env, dt_object_child(dt), th);
+ if (rc != 0)
+ GOTO(out_put, rc);
+ }
+
+ rc = dt_declare_xattr_set(env, dt_object_child(dt), &lmv_buf,
+ XATTR_NAME_LMV, 0, th);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+out_put:
+ if (rc < 0) {
+ for (i = 0; i < stripe_count; i++)
+ if (stripe[i] != NULL)
+ lu_object_put(env, &stripe[i]->do_lu);
+ OBD_FREE(stripe, sizeof(stripe[0]) * stripe_count);
+ lo->ldo_stripenr = 0;
+ lo->ldo_stripes_allocated = 0;
+ lo->ldo_stripe = NULL;
+ }
+
+out_free:
+ if (idx_array != NULL)
+ OBD_FREE(idx_array, sizeof(idx_array[0]) * stripe_count);
+ if (slave_lmm != NULL)
+ OBD_FREE_PTR(slave_lmm);
+
+ RETURN(rc);
+}
+
+/**
+ * Declare create striped md object.
+ */
+static int lod_declare_xattr_set_lmv(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lu_attr *attr,
+ const struct lu_buf *lum_buf,
+ struct dt_object_format *dof,
+ 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;
+ 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)
+ 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);
+ GOTO(out, rc);
+ }
+out:
+ RETURN(rc);
+}
+
+static int lod_dir_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 lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int i;
+ int rc;
+ ENTRY;
+
+ if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
+ struct lmv_user_md_v1 *lum;
+
+ LASSERT(buf != NULL && buf->lb_buf != NULL);
+ lum = buf->lb_buf;
+ rc = lod_verify_md_striping(d, lum);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ rc = dt_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);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (lo->ldo_stripenr == 0)
+ RETURN(rc);
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ LASSERT(lo->ldo_stripe[i]);
+ rc = dt_declare_xattr_set(env, lo->ldo_stripe[i], buf,
+ name, fl, th);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+/*
+ * LOV xattr is a storage for striping, and LOD owns this xattr.
+ * but LOD allows others to control striping to some extent
+ * - to reset strping
+ * - to set new defined striping
+ * - to set new semi-defined striping
+ * - number of stripes is defined
+ * - number of stripes + osts are defined
+ * - ??
+ */
+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;
+
+ /*
+ * 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, BYPASS_CAPA);
+ 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 = dt_declare_xattr_set(env, next, buf, name, fl, th);
+ }
+
+ RETURN(rc);
+}
+
+static void lod_lov_stripe_cache_clear(struct lod_object *lo)
+{
+ lo->ldo_striping_cached = 0;
+ lo->ldo_def_striping_set = 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_striping_cached = 0;
+}
+
+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 lustre_capa *capa)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ int i;
+ ENTRY;
+
+ rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(rc);
+
+ if (lo->ldo_stripenr == 0)
+ RETURN(rc);
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ LASSERT(lo->ldo_stripe[i]);
+ rc = dt_xattr_set(env, lo->ldo_stripe[i], buf, name, fl, th,
+ capa);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+static int lod_xattr_del_internal(const struct lu_env *env,
+ struct dt_object *dt,
+ const char *name, struct thandle *th,
+ struct lustre_capa *capa)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ int i;
+ ENTRY;
+
+ rc = dt_xattr_del(env, next, name, th, capa);
+ if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(rc);
+
+ if (lo->ldo_stripenr == 0)
+ RETURN(rc);
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ LASSERT(lo->ldo_stripe[i]);
+ rc = dt_xattr_del(env, lo->ldo_stripe[i], name, th,
+ capa);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+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 lustre_capa *capa)
+{
+ 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;
+ int rc;
+ 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;
+
+ rc = lod_verify_striping(d, buf, false);
+ if (rc)
+ RETURN(rc);
+
+ if (lum->lmm_magic == LOV_USER_MAGIC_V3)
+ v3 = buf->lb_buf;
/* if { size, offset, count } = { 0, -1, 0 } and no pool
* (i.e. all default values specified) then delete default
(int)lum->lmm_stripe_offset,
v3 ? "from" : "", v3 ? v3->lmm_pool_name : "");
- if (LOVEA_DELETE_VALUES((lum->lmm_stripe_size),
- (lum->lmm_stripe_count),
- (lum->lmm_stripe_offset)) &&
- lum->lmm_magic == LOV_USER_MAGIC_V1) {
- rc = dt_xattr_del(env, next, name, th, capa);
- if (rc == -ENODATA)
- rc = 0;
- } else {
- rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ if (LOVEA_DELETE_VALUES((lum->lmm_stripe_size),
+ (lum->lmm_stripe_count),
+ (lum->lmm_stripe_offset)) &&
+ lum->lmm_magic == LOV_USER_MAGIC_V1) {
+ rc = lod_xattr_del_internal(env, dt, name, th, capa);
+ if (rc == -ENODATA)
+ rc = 0;
+ } else {
+ rc = lod_xattr_set_internal(env, dt, buf, name, fl, th, capa);
+ }
+
+ RETURN(rc);
+}
+
+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 lustre_capa *capa)
+{
+ struct lod_object *l = lod_dt_obj(dt);
+ 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, capa);
+ if (rc == -ENODATA)
+ rc = 0;
+ } else {
+ rc = lod_xattr_set_internal(env, dt, buf, name, fl, th, capa);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ /* 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);
+ }
+
+ l->ldo_dir_striping_cached = 0;
+ l->ldo_dir_def_striping_set = 1;
+ l->ldo_dir_def_stripenr = le32_to_cpu(lum->lum_stripe_count);
+
+ RETURN(rc);
+}
+
+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 lustre_capa *capa)
+{
+ 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;
+ 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_stripenr == 0)
+ RETURN(0);
+
+ rc = dt_attr_get(env, dt_object_child(dt), attr, BYPASS_CAPA);
+ if (rc != 0)
+ RETURN(rc);
+
+ attr->la_valid = LA_TYPE | LA_MODE;
+ 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);
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ struct dt_object *dto;
+ char *stripe_name = info->lti_key;
+
+ dto = lo->ldo_stripe[i];
+ dt_write_lock(env, dto, MOR_TGT_CHILD);
+ rc = dt_create(env, dto, attr, NULL, dof, th);
+ dt_write_unlock(env, dto);
+ if (rc != 0)
+ RETURN(rc);
+
+ rc = dt_insert(env, dto,
+ (const struct dt_rec *)lu_object_fid(&dto->do_lu),
+ (const struct dt_key *)dot, th, capa, 0);
+ if (rc != 0)
+ RETURN(rc);
+
+ rc = dt_insert(env, dto,
+ (struct dt_rec *)lu_object_fid(&dt->do_lu),
+ (const struct dt_key *)dotdot, th, capa, 0);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (lo->ldo_striping_cached &&
+ !LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size,
+ lo->ldo_def_stripenr,
+ lo->ldo_def_stripe_offset)) {
+ struct lov_user_md_v3 *v3;
+
+ /* sigh, lti_ea_store has been used for lmv_buf,
+ * so we have to allocate buffer for default
+ * stripe EA */
+ OBD_ALLOC_PTR(v3);
+ if (v3 == NULL)
+ GOTO(out, rc);
+
+ 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)
+ strncpy(v3->lmm_pool_name, lo->ldo_pool,
+ LOV_MAXPOOLNAME);
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+ rc = dt_xattr_set(env, dto, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th, capa);
+ OBD_FREE_PTR(v3);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+
+ slave_lmm->lmv_master_mdt_index = cpu_to_le32(i);
+ rc = dt_xattr_set(env, dto, &slave_lmv_buf, XATTR_NAME_LMV,
+ fl, th, capa);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&dto->do_lu)), i);
+ rc = dt_insert(env, dt_object_child(dt),
+ (const struct dt_rec *)lu_object_fid(&dto->do_lu),
+ (const struct dt_key *)stripe_name, th, capa, 0);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = dt_ref_add(env, dt_object_child(dt), th);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+
+ rc = dt_xattr_set(env, dt_object_child(dt), &lmv_buf, XATTR_NAME_LMV,
+ fl, th, capa);
+
+out:
+ if (slave_lmm != NULL)
+ OBD_FREE_PTR(slave_lmm);
+
+ RETURN(rc);
+}
+
+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)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ ENTRY;
+
+ if (lo->ldo_dir_def_striping_set &&
+ !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);
+
+ info->lti_buf.lb_buf = v1;
+ info->lti_buf.lb_len = sizeof(*v1);
+
+ 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,
+ BYPASS_CAPA);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ /* Transfer default LMV striping from the parent */
+ if (lo->ldo_dir_striping_cached &&
+ !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 (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(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, BYPASS_CAPA);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ /* Transfer default LOV striping from the parent */
+ if (lo->ldo_striping_cached &&
+ !LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size,
+ lo->ldo_def_stripenr,
+ lo->ldo_def_stripe_offset)) {
+ 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;
+ }
+
+ 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)
+ strncpy(v3->lmm_pool_name, lo->ldo_pool,
+ LOV_MAXPOOLNAME);
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+
+ 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,
+ BYPASS_CAPA);
+ if (rc != 0)
+ RETURN(rc);
}
- 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 dt_object_format *dof,
+ struct thandle *th)
+{
+ return lod_dir_striping_create_internal(env, dt, attr, 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, dof, th, false);
}
static int lod_xattr_set(const struct lu_env *env,
const char *name, int fl, struct thandle *th,
struct lustre_capa *capa)
{
- struct dt_object *next = dt_object_child(dt);
- __u32 attr;
- int rc;
+ struct dt_object *next = dt_object_child(dt);
+ int rc;
ENTRY;
- attr = dt->do_lu.lo_header->loh_attr & S_IFMT;
- if (S_ISDIR(attr)) {
- if (strncmp(name, XATTR_NAME_LOV, strlen(XATTR_NAME_LOV)) == 0)
- rc = lod_xattr_set_lov_on_dir(env, dt, buf, name,
- fl, th, capa);
- else
+ 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 = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ else
+ rc = lod_dir_striping_create(env, dt, NULL, NULL, th);
- } else if (S_ISREG(attr) && !strcmp(name, XATTR_NAME_LOV)) {
- /*
- * XXX: check striping match what we already have
- * during req replay, declare_xattr_set() defines striping,
- * then create() does the work
- */
- rc = lod_striping_create(env, dt, NULL, NULL, th);
RETURN(rc);
- } else {
- /*
- * behave transparantly for all other EAs
- */
- rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
}
+ 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, capa);
+ 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, capa);
+ 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 = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ } else {
+ rc = lod_striping_create(env, dt, NULL, NULL, th);
+ }
+ RETURN(rc);
+ }
+
+ /* then all other xattr */
+ rc = lod_xattr_set_internal(env, dt, buf, name, fl, th, capa);
+
RETURN(rc);
}
const char *name, struct thandle *th,
struct lustre_capa *capa)
{
+ if (!strcmp(name, XATTR_NAME_LOV))
+ lod_object_free_striping(env, lod_dt_obj(dt));
return dt_xattr_del(env, dt_object_child(dt), name, th, capa);
}
return (is_reg && fid_seq(fid) != FID_SEQ_LOCAL_FILE);
}
-static int lod_cache_parent_striping(const struct lu_env *env,
- struct lod_object *lp)
+
+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;
- /* dt_ah_init() is called from MDD without parent being write locked
+ /* called from MDD without parent being write locked,
* lock it here */
dt_write_lock(env, dt_object_child(&lp->ldo_obj), 0);
- if (lp->ldo_striping_cached)
- GOTO(unlock, rc = 0);
-
rc = lod_get_lov_ea(env, lp);
if (rc < 0)
GOTO(unlock, rc);
GOTO(unlock, rc = 0);
}
- v1 = (struct lov_user_md_v1 *)lod_env_info(env)->lti_ea_store;
- if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1))
+ 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))
+ } 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_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_cache_parent_lmv_striping(const struct lu_env *env,
+ struct lod_object *lp)
+{
+ 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 < sizeof(struct lmv_user_md)) {
+ /* don't lookup for non-existing or invalid striping */
+ lp->ldo_dir_def_striping_set = 0;
+ lp->ldo_dir_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;
- CDEBUG(D_OTHER, "def. striping: # %d, sz %d, off %d %s%s on "DFID"\n",
- lp->ldo_def_stripenr, lp->ldo_def_stripe_size,
- lp->ldo_def_stripe_offset, v3 ? "from " : "",
- v3 ? lp->ldo_pool : "", PFID(lu_object_fid(&lp->ldo_obj.do_lu)));
+ 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_striping_cached = 1;
EXIT;
unlock:
return rc;
}
+static int lod_cache_parent_striping(const struct lu_env *env,
+ struct lod_object *lp,
+ umode_t child_mode)
+{
+ int rc = 0;
+ ENTRY;
+
+ rc = lod_load_striping(env, lp);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (!lp->ldo_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 (S_ISDIR(child_mode) && !lp->ldo_dir_striping_cached)
+ rc = lod_cache_parent_lmv_striping(env, lp);
+
+ RETURN(rc);
+}
+
/**
* used to transfer default striping data to the object being created
*/
struct dt_allocation_hint *ah,
struct dt_object *parent,
struct dt_object *child,
- cfs_umode_t child_mode)
+ umode_t child_mode)
{
struct lod_device *d = lu2lod_dev(child->do_lu.lo_dev);
struct dt_object *nextp = NULL;
struct lod_object *lp = NULL;
struct lod_object *lc;
struct lov_desc *desc;
+ 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;
}
nextc = dt_object_child(child);
* in case of late striping creation, ->ah_init()
* can be called with local object existing
*/
- if (!dt_object_exists(nextc))
- nextc->do_ops->do_ah_init(env, ah, nextp, nextc, child_mode);
+ if (!dt_object_exists(nextc) || dt_object_remote(nextc))
+ nextc->do_ops->do_ah_init(env, ah, dt_object_remote(nextp) ?
+ NULL : nextp, nextc, child_mode);
if (S_ISDIR(child_mode)) {
- if (lp->ldo_striping_cached == 0) {
- /* we haven't tried to get default striping for
- * the directory yet, let's cache it in the object */
- lod_cache_parent_striping(env, lp);
+ if (lc->ldo_dir_stripe == NULL) {
+ OBD_ALLOC_PTR(lc->ldo_dir_stripe);
+ if (lc->ldo_dir_stripe == NULL)
+ return;
+ }
+
+ if (lp->ldo_dir_stripe == NULL) {
+ OBD_ALLOC_PTR(lp->ldo_dir_stripe);
+ if (lp->ldo_dir_stripe == NULL)
+ return;
}
+
+ rc = lod_cache_parent_striping(env, lp, child_mode);
+ if (rc != 0)
+ return;
+
/* transfer defaults to new directory */
if (lp->ldo_striping_cached) {
if (lp->ldo_pool)
lc->ldo_def_stripe_offset = lp->ldo_def_stripe_offset;
lc->ldo_striping_cached = 1;
lc->ldo_def_striping_set = 1;
- CDEBUG(D_OTHER, "inherite striping defaults\n");
+ 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);
+ }
+
+ /* transfer dir defaults to new directory */
+ if (lp->ldo_dir_striping_cached) {
+ 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_striping_cached = 1;
+ lc->ldo_dir_def_striping_set = 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);
}
- return;
+
+ /* If the directory is specified with certain 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);
+ }
+ } 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);
+ } else {
+ /* set default stripe for this directory */
+ lc->ldo_stripenr = 0;
+ lc->ldo_dir_stripe_offset = -1;
+ }
+
+ CDEBUG(D_INFO, "final striping count:%hu, offset:%d\n",
+ lc->ldo_stripenr, (int)lc->ldo_dir_stripe_offset);
+
+ goto out;
}
/*
*/
if (!lod_object_will_be_striped(S_ISREG(child_mode),
lu_object_fid(&child->do_lu)))
- return;
-
+ goto out;
/*
* try from the parent
*/
if (likely(parent)) {
- if (lp->ldo_striping_cached == 0) {
- /* we haven't tried to get default striping for
- * the directory yet, let's cache it in the object */
- lod_cache_parent_striping(env, lp);
- }
+ lod_cache_parent_striping(env, lp, child_mode);
lc->ldo_def_stripe_offset = (__u16) -1;
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(rc);
}
-
/**
* Create declaration of striped object
*/
GOTO(out, rc = -ENOMEM);
}
- /* 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);
- }
+ 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);
+ }
- /*
- * declare storage for striping data
- */
- info->lti_buf.lb_len = lov_mds_md_size(lo->ldo_stripenr,
+ /*
+ * 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 = dt_declare_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV,
- 0, th);
+ } 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 = dt_declare_xattr_set(env, next, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
if (rc)
GOTO(out, rc);
LASSERT(dof);
LASSERT(attr);
LASSERT(th);
- LASSERT(!dt_object_exists(next));
/*
* first of all, we declare creation of local object
if (lo->ldo_stripenr > 0)
rc = lod_declare_striped_object(env, dt, attr,
NULL, th);
- } else if (dof->dof_type == DFT_DIR && lo->ldo_striping_cached) {
- struct lod_thread_info *info = lod_env_info(env);
-
- info->lti_buf.lb_buf = NULL;
- info->lti_buf.lb_len = sizeof(struct lov_user_md_v3);
- /* to transfer default striping from the parent */
- rc = dt_declare_xattr_set(env, next, &info->lti_buf,
- XATTR_NAME_LOV, 0, th);
+ } else if (dof->dof_type == DFT_DIR) {
+ /* 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);
}
-
out:
RETURN(rc);
}
int rc = 0, i;
ENTRY;
- LASSERT(lo->ldo_stripe);
- LASSERT(lo->ldo_stripe > 0);
LASSERT(lo->ldo_striping_cached == 0);
/* create all underlying objects */
/* create local object */
rc = dt_create(env, next, attr, hint, dof, th);
+ if (rc != 0)
+ RETURN(rc);
- if (rc == 0) {
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
- rc = lod_store_def_striping(env, dt, th);
- else if (lo->ldo_stripe)
- rc = lod_striping_create(env, dt, attr, dof, th);
- }
+ 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);
RETURN(rc);
}
{
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;
/*
- * we declare destroy for the local object
- */
- rc = dt_declare_destroy(env, next, th);
- if (rc)
- RETURN(rc);
-
- /*
* 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
RETURN(rc);
/* declare destroy for all underlying objects */
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
- rc = dt_declare_destroy(env, lo->ldo_stripe[i], th);
+ 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);
- if (rc)
- break;
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ rc = dt_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 = dt_declare_delete(env, next,
+ (const struct dt_key *)stripe_name, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ }
+ /*
+ * we declare destroy for the local object
+ */
+ rc = dt_declare_destroy(env, next, th);
+ if (rc)
+ RETURN(rc);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
+ RETURN(0);
+
+ /* declare destroy all striped objects */
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ if (likely(lo->ldo_stripe[i] != NULL)) {
+ rc = dt_declare_destroy(env, lo->ldo_stripe[i], th);
+ if (rc != 0)
+ break;
+ }
}
RETURN(rc);
{
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;
- /* destroy local object */
- rc = dt_destroy(env, next, th);
- if (rc)
- RETURN(rc);
+ /* 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);
- /* destroy all underlying objects */
- for (i = 0; i < lo->ldo_stripenr; i++) {
- LASSERT(lo->ldo_stripe[i]);
- rc = dt_destroy(env, lo->ldo_stripe[i], th);
- if (rc)
- break;
- }
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ rc = dt_ref_del(env, next, th);
+ if (rc != 0)
+ RETURN(rc);
- RETURN(rc);
-}
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)),
+ i);
-static int lod_index_try(const struct lu_env *env, struct dt_object *dt,
- const struct dt_index_features *feat)
-{
- struct dt_object *next = dt_object_child(dt);
- int rc;
- ENTRY;
+ 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(next->do_ops);
- LASSERT(next->do_ops->do_index_try);
+ rc = dt_delete(env, next,
+ (const struct dt_key *)stripe_name,
+ th, BYPASS_CAPA);
+ if (rc != 0)
+ RETURN(rc);
+ }
+ }
+ rc = dt_destroy(env, next, th);
+ if (rc != 0)
+ RETURN(rc);
- rc = next->do_ops->do_index_try(env, next, feat);
- if (next->do_index_ops && dt->do_index_ops == NULL) {
- dt->do_index_ops = &lod_index_ops;
- /* XXX: iterators don't accept device, so bypass LOD */
- /* will be fixed with DNE */
- if (lod_index_ops.dio_it.fini == NULL) {
- lod_index_ops.dio_it = next->do_index_ops->dio_it;
- lod_index_ops.dio_it.init = lod_it_init;
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
+ RETURN(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)) {
+ rc = dt_destroy(env, lo->ldo_stripe[i], th);
+ if (rc != 0)
+ break;
}
}
return dt_capa_get(env, dt_object_child(dt), old, opc);
}
-static int lod_object_sync(const struct lu_env *env, struct dt_object *dt)
+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);
+}
+
+struct lod_slave_locks {
+ int lsl_lock_count;
+ struct lustre_handle lsl_handle[0];
+};
+
+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;
+
+ if (slave_locks == NULL)
+ RETURN(0);
+
+ for (i = 1; i < slave_locks->lsl_lock_count; i++) {
+ if (lustre_handle_is_used(&slave_locks->lsl_handle[i])) {
+ int rc1;
+
+ 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;
+ }
+ }
+
+ RETURN(rc);
+}
+
+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;
+
+ if (slave_locks == NULL)
+ RETURN(0);
+
+ if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ RETURN(-ENOTDIR);
+
+ rc = lod_load_striping(env, lo);
+ if (rc != 0)
+ RETURN(rc);
+
+ /* 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);
+
+ /* Only cancel slave lock for striped dir */
+ rc = lod_object_unlock_internal(env, dt, einfo, policy);
+
+ 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;
+
+ RETURN(rc);
+}
+
+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)
{
- return dt_object_sync(env, dt_object_child(dt));
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc = 0;
+ int i;
+ int slave_locks_size;
+ struct lod_slave_locks *slave_locks = NULL;
+ 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);
+
+ 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;
+
+ /* striped directory lock */
+ for (i = 1; i < lo->ldo_stripenr; i++) {
+ struct lustre_handle lockh;
+ struct ldlm_res_id *res_id;
+
+ 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;
+
+ 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;
+ }
+
+ einfo->ei_cbdata = slave_locks;
+
+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;
+ }
+
+ RETURN(rc);
}
struct dt_object_operations lod_obj_ops = {
.do_ref_del = lod_ref_del,
.do_capa_get = lod_capa_get,
.do_object_sync = lod_object_sync,
+ .do_object_lock = lod_object_lock,
+ .do_object_unlock = lod_object_unlock,
};
static ssize_t lod_read(const struct lu_env *env, struct dt_object *dt,
static ssize_t lod_declare_write(const struct lu_env *env,
struct dt_object *dt,
- const loff_t size, loff_t pos,
+ const struct lu_buf *buf, loff_t pos,
struct thandle *th)
{
return dt_declare_record_write(env, dt_object_child(dt),
- size, pos, th);
+ buf, pos, th);
}
static ssize_t lod_write(const struct lu_env *env, struct dt_object *dt,
.dbo_write = lod_write
};
-static int lod_object_init(const struct lu_env *env, struct lu_object *o,
+static int lod_object_init(const struct lu_env *env, struct lu_object *lo,
const struct lu_object_conf *conf)
{
- struct lod_device *d = lu2lod_dev(o->lo_dev);
- struct lu_object *below;
- struct lu_device *under;
+ struct lod_device *lod = lu2lod_dev(lo->lo_dev);
+ struct lu_device *cdev = NULL;
+ struct lu_object *cobj;
+ struct lod_tgt_descs *ltd = NULL;
+ struct lod_tgt_desc *tgt;
+ mdsno_t idx = 0;
+ int type = LU_SEQ_RANGE_ANY;
+ int rc;
ENTRY;
- /*
- * create local object
- */
- under = &d->lod_child->dd_lu_dev;
- below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
- if (below == NULL)
+ rc = lod_fld_lookup(env, lod, lu_object_fid(lo), &idx, &type);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (type == LU_SEQ_RANGE_MDT &&
+ idx == lu_site2seq(lo->lo_dev->ld_site)->ss_node_id) {
+ cdev = &lod->lod_child->dd_lu_dev;
+ } else if (type == LU_SEQ_RANGE_MDT) {
+ ltd = &lod->lod_mdt_descs;
+ lod_getref(ltd);
+ } else if (type == LU_SEQ_RANGE_OST) {
+ ltd = &lod->lod_ost_descs;
+ lod_getref(ltd);
+ } else {
+ LBUG();
+ }
+
+ if (ltd != NULL) {
+ if (ltd->ltd_tgts_size > idx &&
+ cfs_bitmap_check(ltd->ltd_tgt_bitmap, idx)) {
+ tgt = LTD_TGT(ltd, idx);
+
+ LASSERT(tgt != NULL);
+ LASSERT(tgt->ltd_tgt != NULL);
+
+ cdev = &(tgt->ltd_tgt->dd_lu_dev);
+ }
+ lod_putref(lod, ltd);
+ }
+
+ if (unlikely(cdev == NULL))
+ RETURN(-ENOENT);
+
+ cobj = cdev->ld_ops->ldo_object_alloc(env, lo->lo_header, cdev);
+ if (unlikely(cobj == NULL))
RETURN(-ENOMEM);
- lu_object_add(o, below);
+ lu_object_add(lo, cobj);
RETURN(0);
}
{
int i;
+ if (lo->ldo_dir_stripe != NULL) {
+ OBD_FREE_PTR(lo->ldo_dir_stripe);
+ lo->ldo_dir_stripe = NULL;
+ }
+
if (lo->ldo_stripe) {
LASSERT(lo->ldo_stripes_allocated > 0);
lo->ldo_stripes_allocated = 0;
}
lo->ldo_stripenr = 0;
+ lo->ldo_pattern = 0;
}
/*
git://git.whamcloud.com / fs / lustre-release.git / blobdiff