cfs_list_for_each_entry_safe(ost_desc, tmp, &kill, ltd_kill) {
int rc;
cfs_list_del(&ost_desc->ltd_kill);
- /* XXX: remove from QoS structures */
- /* disconnect from OSP */
+ /* remove from QoS structures */
+ rc = qos_del_tgt(lod, ost_desc);
+ if (rc)
+ CERROR("%s: qos_del_tgt(%s) failed: rc = %d\n",
+ lod2obd(lod)->obd_name,
+ obd_uuid2str(&ost_desc->ltd_uuid), rc);
rc = obd_disconnect(ost_desc->ltd_exp);
if (rc)
- CERROR("%s: failed to disconnect %s (%d)\n",
+ CERROR("%s: failed to disconnect %s: rc = %d\n",
lod2obd(lod)->obd_name,
obd_uuid2str(&ost_desc->ltd_uuid), rc);
OBD_FREE_PTR(ost_desc);
GOTO(out_mutex, rc);
}
+ rc = qos_add_tgt(lod, ost_desc);
+ if (rc) {
+ CERROR("%s: qos_add_tgt(%s) failed: rc = %d\n", obd->obd_name,
+ obd_uuid2str(&ost_desc->ltd_uuid), rc);
+ GOTO(out_pool, rc);
+ }
+
/* The new OST is now a full citizen */
if (index >= lod->lod_desc.ld_tgt_count)
lod->lod_desc.ld_tgt_count = index + 1;
RETURN(0);
+out_pool:
lod_ost_pool_remove(&lod->lod_pool_info, index);
out_mutex:
cfs_mutex_unlock(&lod->lod_mutex);
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);
+}
+
+/*
+ * generate and write LOV EA for given striped object
+ */
+int lod_generate_and_set_lovea(const struct lu_env *env,
+ struct lod_object *lo, struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ const struct lu_fid *fid = lu_object_fid(&lo->ldo_obj.do_lu);
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ __u32 magic;
+ int i, rc, lmm_size;
+ ENTRY;
+
+ LASSERT(lo);
+ LASSERT(lo->ldo_stripenr > 0);
+
+ magic = lo->ldo_pool ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
+ lmm_size = lov_mds_md_size(lo->ldo_stripenr, magic);
+ if (info->lti_ea_store_size < lmm_size) {
+ rc = lod_ea_store_resize(info, lmm_size);
+ if (rc)
+ RETURN(rc);
+ }
+
+ lmm = info->lti_ea_store;
+
+ lmm->lmm_magic = cpu_to_le32(magic);
+ lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
+ lmm->lmm_object_id = cpu_to_le64(fid_ver_oid(fid));
+ lmm->lmm_object_seq = cpu_to_le64(fid_seq(fid));
+ lmm->lmm_stripe_size = cpu_to_le32(lo->ldo_stripe_size);
+ lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_stripenr);
+ lmm->lmm_layout_gen = 0;
+ if (magic == LOV_MAGIC_V1) {
+ objs = &lmm->lmm_objects[0];
+ } else {
+ struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *) lmm;
+ strncpy(v3->lmm_pool_name, lo->ldo_pool, LOV_MAXPOOLNAME);
+ objs = &v3->lmm_objects[0];
+ }
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ const struct lu_fid *fid;
+
+ LASSERT(lo->ldo_stripe[i]);
+ fid = lu_object_fid(&lo->ldo_stripe[i]->do_lu);
+
+ rc = fid_ostid_pack(fid, &info->lti_ostid);
+ LASSERT(rc == 0);
+ LASSERT(info->lti_ostid.oi_seq == FID_SEQ_OST_MDT0);
+
+ objs[i].l_object_id = cpu_to_le64(info->lti_ostid.oi_id);
+ objs[i].l_object_seq = cpu_to_le64(info->lti_ostid.oi_seq);
+ objs[i].l_ost_gen = cpu_to_le32(0);
+ objs[i].l_ost_idx = cpu_to_le32(fid_idif_ost_idx(fid));
+ }
+
+ info->lti_buf.lb_buf = lmm;
+ info->lti_buf.lb_len = lmm_size;
+ rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0,
+ th, BYPASS_CAPA);
+
+ RETURN(rc);
+}
+
+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);
+}
+
+int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lov_user_md_v3 *v3;
+ int rc;
+ ENTRY;
+
+ LASSERT(S_ISDIR(dt->do_lu.lo_header->loh_attr));
+
+ /*
+ * store striping defaults into new directory
+ * used to implement defaults inheritance
+ */
+
+ /* probably nothing to inherite */
+ if (lo->ldo_striping_cached == 0)
+ RETURN(0);
+
+ if (LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size, lo->ldo_def_stripenr,
+ lo->ldo_def_stripe_offset))
+ RETURN(0);
+
+ /* XXX: use thread info */
+ OBD_ALLOC_PTR(v3);
+ if (v3 == NULL)
+ RETURN(-ENOMEM);
+
+ v3->lmm_magic = cpu_to_le32(LOV_MAGIC_V3);
+ v3->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
+ v3->lmm_object_id = 0;
+ v3->lmm_object_seq = 0;
+ v3->lmm_stripe_size = cpu_to_le32(lo->ldo_def_stripe_size);
+ v3->lmm_stripe_count = cpu_to_le16(lo->ldo_def_stripenr);
+ v3->lmm_stripe_offset = cpu_to_le16(lo->ldo_def_stripe_offset);
+ if (lo->ldo_pool)
+ strncpy(v3->lmm_pool_name, lo->ldo_pool, LOV_MAXPOOLNAME);
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+ rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0, th,
+ BYPASS_CAPA);
+
+ OBD_FREE_PTR(v3);
+
+ 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);
+}
+
+int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf,
+ int specific)
+{
+ struct lov_user_md_v1 *lum;
+ struct lov_user_md_v3 *v3 = NULL;
+ struct pool_desc *pool = NULL;
+ int rc;
+ ENTRY;
+
+ lum = buf->lb_buf;
+
+ if (lum->lmm_magic != LOV_USER_MAGIC_V1 &&
+ lum->lmm_magic != LOV_USER_MAGIC_V3 &&
+ lum->lmm_magic != LOV_MAGIC_V1_DEF &&
+ lum->lmm_magic != LOV_MAGIC_V3_DEF) {
+ CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#x\n",
+ lum->lmm_magic);
+ RETURN(-EINVAL);
+ }
+
+ if ((specific && lum->lmm_pattern != LOV_PATTERN_RAID0) ||
+ (specific == 0 && lum->lmm_pattern != 0)) {
+ CDEBUG(D_IOCTL, "bad userland stripe pattern: %#x\n",
+ lum->lmm_pattern);
+ RETURN(-EINVAL);
+ }
+
+ /* 64kB is the largest common page size we see (ia64), and matches the
+ * check in lfs */
+ if (lum->lmm_stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
+ CDEBUG(D_IOCTL, "stripe size %u not multiple of %u, fixing\n",
+ lum->lmm_stripe_size, LOV_MIN_STRIPE_SIZE);
+ RETURN(-EINVAL);
+ }
+
+ /* an offset of -1 is treated as a "special" valid offset */
+ if (lum->lmm_stripe_offset != (typeof(lum->lmm_stripe_offset))(-1)) {
+ /* if offset is not within valid range [0, osts_size) */
+ if (lum->lmm_stripe_offset >= d->lod_osts_size) {
+ CDEBUG(D_IOCTL, "stripe offset %u >= bitmap size %u\n",
+ lum->lmm_stripe_offset, d->lod_osts_size);
+ RETURN(-EINVAL);
+ }
+
+ /* if lmm_stripe_offset is *not* in bitmap */
+ if (!cfs_bitmap_check(d->lod_ost_bitmap,
+ lum->lmm_stripe_offset)) {
+ CDEBUG(D_IOCTL, "stripe offset %u not in bitmap\n",
+ lum->lmm_stripe_offset);
+ RETURN(-EINVAL);
+ }
+ }
+
+ if (lum->lmm_magic == LOV_USER_MAGIC_V3)
+ v3 = buf->lb_buf;
+
+ if (v3)
+ pool = lod_find_pool(d, v3->lmm_pool_name);
+
+ if (pool != NULL) {
+ __u16 offs = v3->lmm_stripe_offset;
+
+ if (offs != (typeof(v3->lmm_stripe_offset))(-1)) {
+ rc = lod_check_index_in_pool(offs, pool);
+ if (rc < 0) {
+ lod_pool_putref(pool);
+ RETURN(-EINVAL);
+ }
+ }
+
+ if (specific && lum->lmm_stripe_count > pool_tgt_count(pool)) {
+ CDEBUG(D_IOCTL,
+ "stripe count %u > # OSTs %u in the pool\n",
+ lum->lmm_stripe_count, pool_tgt_count(pool));
+ lod_pool_putref(pool);
+ RETURN(-EINVAL);
+ }
+
+ lod_pool_putref(pool);
+ }
+
+ RETURN(0);
+}
+
void lod_fix_desc_stripe_size(__u64 *val)
{
if (*val < PTLRPC_MAX_BRW_SIZE) {
git://git.whamcloud.com / fs / lustre-release.git / blobdiff