struct lu_buf *buf, const char *name,
struct lustre_capa *capa)
{
- return dt_xattr_get(env, dt_object_child(dt), buf, name, 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(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;
+ }
+ }
+
+ RETURN(rc);
}
/*
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 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;
+
+ LASSERT(buf);
+ LASSERT(buf->lb_buf);
+ lum = buf->lb_buf;
+
+ rc = lod_verify_striping(d, buf, 0);
+ 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
+ * striping from dir. */
+ CDEBUG(D_OTHER,
+ "set default striping: sz %u # %u offset %d %s %s\n",
+ (unsigned)lum->lmm_stripe_size,
+ (unsigned)lum->lmm_stripe_count,
+ (int)lum->lmm_stripe_offset,
+ v3 ? "from" : "", v3 ? v3->lmm_pool_name : "");
+
+ 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);
+ }
+
+ RETURN(rc);
+}
+
static int lod_xattr_set(const struct lu_env *env,
struct dt_object *dt, const struct lu_buf *buf,
const char *name, int fl, struct thandle *th,
struct lustre_capa *capa)
{
struct dt_object *next = dt_object_child(dt);
+ __u32 attr;
int rc;
ENTRY;
- /*
- * behave transparantly for all other EAs
- */
- rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ 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
+ rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+
+ } else {
+ /*
+ * behave transparantly for all other EAs
+ */
+ rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ }
RETURN(rc);
}
struct thandle *th)
{
struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
int rc;
ENTRY;
if (dof->dof_type == DFT_SYM)
dt->do_body_ops = &lod_body_lnk_ops;
+ 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);
+ }
+
out:
RETURN(rc);
}
/* create local object */
rc = dt_create(env, next, attr, hint, dof, th);
+ if (rc == 0) {
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ rc = lod_store_def_striping(env, dt, th);
+ }
+
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff