return(rc);
}
+int lod_ea_store_resize(struct lod_thread_info *info, int size)
+{
+ int round = size_roundup_power2(size);
+
+ LASSERT(round <= lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
+ if (info->lti_ea_store) {
+ LASSERT(info->lti_ea_store_size);
+ LASSERT(info->lti_ea_store_size < round);
+ CDEBUG(D_INFO, "EA store size %d is not enough, need %d\n",
+ info->lti_ea_store_size, round);
+ OBD_FREE_LARGE(info->lti_ea_store, info->lti_ea_store_size);
+ info->lti_ea_store = NULL;
+ info->lti_ea_store_size = 0;
+ }
+
+ OBD_ALLOC_LARGE(info->lti_ea_store, round);
+ if (info->lti_ea_store == NULL)
+ RETURN(-ENOMEM);
+ info->lti_ea_store_size = round;
+ RETURN(0);
+}
+
+int lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ int rc;
+ ENTRY;
+
+ LASSERT(info);
+
+ if (unlikely(info->lti_ea_store_size == 0)) {
+ /* just to enter in allocation block below */
+ rc = -ERANGE;
+ } else {
+repeat:
+ info->lti_buf.lb_buf = info->lti_ea_store;
+ info->lti_buf.lb_len = info->lti_ea_store_size;
+ rc = dt_xattr_get(env, next, &info->lti_buf, XATTR_NAME_LOV,
+ BYPASS_CAPA);
+ }
+ /* if object is not striped or inaccessible */
+ if (rc == -ENODATA)
+ RETURN(0);
+
+ if (rc == -ERANGE) {
+ /* EA doesn't fit, reallocate new buffer */
+ rc = dt_xattr_get(env, next, &LU_BUF_NULL, XATTR_NAME_LOV,
+ BYPASS_CAPA);
+ if (rc == -ENODATA)
+ RETURN(0);
+ else if (rc < 0)
+ RETURN(rc);
+
+ LASSERT(rc > 0);
+ rc = lod_ea_store_resize(info, rc);
+ if (rc)
+ RETURN(rc);
+ goto repeat;
+ }
+
+ RETURN(rc);
+}
+
+/*
+ * allocate array of objects pointers, find/create objects
+ * stripenr and other fields should be initialized by this moment
+ */
+int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
+ struct lov_ost_data_v1 *objs)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lu_object *o, *n;
+ struct lu_device *nd;
+ int i, idx, rc = 0;
+ ENTRY;
+
+ LASSERT(lo);
+ LASSERT(lo->ldo_stripe == NULL);
+ LASSERT(lo->ldo_stripenr > 0);
+ LASSERT(lo->ldo_stripe_size > 0);
+
+ i = sizeof(struct dt_object *) * lo->ldo_stripenr;
+ OBD_ALLOC(lo->ldo_stripe, i);
+ if (lo->ldo_stripe == NULL)
+ GOTO(out, rc = -ENOMEM);
+ lo->ldo_stripes_allocated = lo->ldo_stripenr;
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+
+ info->lti_ostid.oi_id = le64_to_cpu(objs[i].l_object_id);
+ /* XXX: support for DNE? */
+ info->lti_ostid.oi_seq = le64_to_cpu(objs[i].l_object_seq);
+ idx = le64_to_cpu(objs[i].l_ost_idx);
+ fid_ostid_unpack(&info->lti_fid, &info->lti_ostid, idx);
+
+ /*
+ * XXX: assertion is left for testing, to make
+ * sure we never process requests till configuration
+ * is completed. to be changed to -EINVAL
+ */
+
+ lod_getref(md);
+ LASSERT(cfs_bitmap_check(md->lod_ost_bitmap, idx));
+ LASSERT(OST_TGT(md,idx));
+ LASSERTF(OST_TGT(md,idx)->ltd_ost, "idx %d\n", idx);
+ nd = &OST_TGT(md,idx)->ltd_ost->dd_lu_dev;
+ lod_putref(md);
+
+ o = lu_object_find_at(env, nd, &info->lti_fid, NULL);
+ if (IS_ERR(o))
+ GOTO(out, rc = PTR_ERR(o));
+
+ n = lu_object_locate(o->lo_header, nd->ld_type);
+ LASSERT(n);
+
+ lo->ldo_stripe[i] = container_of(n, struct dt_object, do_lu);
+ }
+
+out:
+ RETURN(rc);
+}
+
+/*
+ * Parse striping information stored in lti_ea_store
+ */
+int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
+ const struct lu_buf *buf)
+{
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ __u32 magic;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(buf);
+ LASSERT(buf->lb_buf);
+ LASSERT(buf->lb_len);
+
+ lmm = (struct lov_mds_md_v1 *) buf->lb_buf;
+ magic = le32_to_cpu(lmm->lmm_magic);
+
+ if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3)
+ GOTO(out, rc = -EINVAL);
+ if (le32_to_cpu(lmm->lmm_pattern) != LOV_PATTERN_RAID0)
+ GOTO(out, rc = -EINVAL);
+
+ lo->ldo_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
+ lo->ldo_stripenr = le16_to_cpu(lmm->lmm_stripe_count);
+ lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
+
+ LASSERT(buf->lb_len >= lov_mds_md_size(lo->ldo_stripenr, magic));
+
+ if (magic == LOV_MAGIC_V3) {
+ struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *) lmm;
+ objs = &v3->lmm_objects[0];
+ lod_object_set_pool(lo, v3->lmm_pool_name);
+ } else {
+ objs = &lmm->lmm_objects[0];
+ }
+
+ rc = lod_initialize_objects(env, lo, objs);
+
+out:
+ RETURN(rc);
+}
+
+/*
+ * Load and parse striping information, create in-core representation for the
+ * stripes
+ */
+int lod_load_striping(const struct lu_env *env, struct lod_object *lo)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ int rc;
+ ENTRY;
+
+ /*
+ * currently this code is supposed to be called from declaration
+ * phase only, thus the object is not expected to be locked by caller
+ */
+ dt_write_lock(env, next, 0);
+ /* already initialized? */
+ if (lo->ldo_stripe) {
+ int i;
+ /* check validity */
+ for (i = 0; i < lo->ldo_stripenr; i++)
+ LASSERTF(lo->ldo_stripe[i], "stripe %d is NULL\n", i);
+ GOTO(out, rc = 0);
+ }
+
+ if (!dt_object_exists(next))
+ GOTO(out, rc = 0);
+
+ /* only regular files can be striped */
+ if (!(lu_object_attr(lod2lu_obj(lo)) & S_IFREG))
+ GOTO(out, rc = 0);
+
+ LASSERT(lo->ldo_stripenr == 0);
+
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
+ GOTO(out, rc);
+
+ /*
+ * there is LOV EA (striping information) in this object
+ * let's parse it and create in-core objects for the stripes
+ */
+ info->lti_buf.lb_buf = info->lti_ea_store;
+ info->lti_buf.lb_len = info->lti_ea_store_size;
+ rc = lod_parse_striping(env, lo, &info->lti_buf);
+out:
+ dt_write_unlock(env, next);
+ RETURN(rc);
+}
+
void lod_fix_desc_stripe_size(__u64 *val)
{
if (*val < PTLRPC_MAX_BRW_SIZE) {
struct thandle *handle)
{
struct dt_object *next = dt_object_child(dt);
- int rc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc, i;
ENTRY;
/*
* declare setattr on the local object
*/
rc = dt_declare_attr_set(env, next, attr, handle);
+ 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
+ */
+ rc = lod_load_striping(env, lo);
+ if (rc)
+ RETURN(rc);
+
+ /*
+ * 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;
+ }
+ }
RETURN(rc);
}
struct lustre_capa *capa)
{
struct dt_object *next = dt_object_child(dt);
- int rc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc, i;
ENTRY;
/*
if (rc)
RETURN(rc);
+ /*
+ * 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;
+ }
+ }
+
RETURN(rc);
}
struct thandle *th)
{
struct dt_object *next = dt_object_child(dt);
- int rc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc, i;
ENTRY;
/*
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
+ */
+ rc = lod_load_striping(env, lo);
+ if (rc)
+ 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 (rc)
+ break;
+ }
+
RETURN(rc);
}
struct dt_object *dt, struct thandle *th)
{
struct dt_object *next = dt_object_child(dt);
- int rc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc, i;
ENTRY;
/* destroy local object */
if (rc)
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;
+ }
+
RETURN(rc);
}
RETURN(0);
}
-void lod_object_free_striping(const struct lu_env *env, struct lod_object *o)
+void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo)
{
+ int i;
+
+ if (lo->ldo_stripe) {
+ LASSERT(lo->ldo_stripes_allocated > 0);
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ if (lo->ldo_stripe[i])
+ lu_object_put(env, &lo->ldo_stripe[i]->do_lu);
+ }
+
+ i = sizeof(struct dt_object *) * lo->ldo_stripes_allocated;
+ OBD_FREE(lo->ldo_stripe, i);
+ lo->ldo_stripe = NULL;
+ lo->ldo_stripes_allocated = 0;
+ }
+ lo->ldo_stripenr = 0;
}
/*