{
int rc;
+ if (!mdd_object_exists(mdd_obj))
+ return -ENODATA;
+
/* First try a small buf */
LASSERT(env != NULL);
ldata->ld_buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_link_buf,
if (ldata->ld_buf->lb_buf == NULL)
return -ENOMEM;
- if (!mdd_object_exists(mdd_obj))
- return -ENODATA;
-
rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, XATTR_NAME_LINK,
BYPASS_CAPA);
if (rc == -ERANGE) {
rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf,
XATTR_NAME_LINK, BYPASS_CAPA);
}
- if (rc < 0)
+ if (rc < 0) {
+ lu_buf_free(ldata->ld_buf);
+ ldata->ld_buf = NULL;
return rc;
+ }
return linkea_init(ldata);
}
int ea_len;
void *linkea;
- if (ldata != NULL && ldata->ld_lee != NULL) {
+ if (ldata != NULL && ldata->ld_leh != NULL) {
ea_len = ldata->ld_leh->leh_len;
linkea = ldata->ld_buf->lb_buf;
} else {
return rc;
}
-int mdd_declare_finish_unlink(const struct lu_env *env,
- struct mdd_object *obj,
- struct md_attr *ma,
- struct thandle *handle)
+static int mdd_declare_finish_unlink(const struct lu_env *env,
+ struct mdd_object *obj,
+ struct thandle *handle)
{
int rc;
if (rc)
return rc;
- rc = mdd_declare_finish_unlink(env, c, ma, handle);
+ rc = mdd_declare_finish_unlink(env, c, handle);
if (rc)
return rc;
struct thandle *handle;
const struct lu_buf *buf;
struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
+ struct dt_allocation_hint *hint = &mdd_env_info(env)->mti_hint;
int rc;
ENTRY;
RETURN(rc);
/* calling ->ah_make_hint() is used to transfer information from parent */
- mdd_object_make_hint(env, mdd_pobj, son, attr, spec);
+ mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint);
handle = mdd_trans_create(env, mdd);
if (IS_ERR(handle))
struct mdd_object *parent,
struct mdd_object *child,
struct lu_attr *attr,
- struct thandle *handle,
- struct linkea_data *ldata)
+ struct thandle *handle)
{
int rc;
ENTRY;
dotdot, handle);
}
- if (rc == 0)
- mdd_declare_links_add(env, child, handle, ldata);
-
RETURN(rc);
}
static int mdd_object_initialize(const struct lu_env *env,
const struct lu_fid *pfid,
- const struct lu_name *lname,
struct mdd_object *child,
struct lu_attr *attr, struct thandle *handle,
- const struct md_op_spec *spec,
- struct linkea_data *ldata)
+ const struct md_op_spec *spec)
{
int rc;
ENTRY;
mdo_ref_del(env, child, handle);
}
- if (rc == 0)
- mdd_links_add(env, child, pfid, lname, handle, ldata, 1);
-
RETURN(rc);
}
RETURN(rc);
}
-static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd,
- struct mdd_object *p, struct mdd_object *c,
- const struct lu_name *name,
- struct lu_attr *attr,
- struct thandle *handle,
- const struct md_op_spec *spec,
- struct linkea_data *ldata,
- struct lu_buf *def_acl_buf,
- struct lu_buf *acl_buf)
+static int mdd_declare_object_create(const struct lu_env *env,
+ struct mdd_device *mdd,
+ struct mdd_object *p, struct mdd_object *c,
+ struct lu_attr *attr,
+ struct thandle *handle,
+ const struct md_op_spec *spec,
+ struct lu_buf *def_acl_buf,
+ struct lu_buf *acl_buf,
+ struct dt_allocation_hint *hint)
{
int rc;
- rc = mdd_declare_object_create_internal(env, p, c, attr, handle, spec);
+ rc = mdd_declare_object_create_internal(env, p, c, attr, handle, spec,
+ hint);
if (rc)
GOTO(out, rc);
GOTO(out, rc);
}
#endif
-
- if (S_ISDIR(attr->la_mode)) {
- rc = mdo_declare_ref_add(env, p, handle);
- if (rc)
- GOTO(out, rc);
- }
-
- rc = mdd_declare_object_initialize(env, p, c, attr, handle, ldata);
- if (rc)
- GOTO(out, rc);
-
- if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
- rc = orph_declare_index_insert(env, c, attr->la_mode, handle);
- else
- rc = mdo_declare_index_insert(env, p, mdo2fid(c),
- name->ln_name, handle);
+ rc = mdd_declare_object_initialize(env, p, c, attr, handle);
if (rc)
GOTO(out, rc);
}
if (S_ISLNK(attr->la_mode)) {
+ const char *target_name = spec->u.sp_symname;
+ int sym_len = strlen(target_name);
+ const struct lu_buf *buf;
+
+ buf = mdd_buf_get_const(env, target_name, sym_len);
rc = dt_declare_record_write(env, mdd_object_child(c),
- strlen(spec->u.sp_symname), 0,
- handle);
+ buf, 0, handle);
if (rc)
GOTO(out, rc);
}
+out:
+ return rc;
+}
+
+static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd,
+ struct mdd_object *p, struct mdd_object *c,
+ const struct lu_name *name,
+ struct lu_attr *attr,
+ struct thandle *handle,
+ const struct md_op_spec *spec,
+ struct linkea_data *ldata,
+ struct lu_buf *def_acl_buf,
+ struct lu_buf *acl_buf,
+ struct dt_allocation_hint *hint)
+{
+ int rc;
+
+ rc = mdd_declare_object_create(env, mdd, p, c, attr, handle, spec,
+ def_acl_buf, acl_buf, hint);
+ if (rc)
+ GOTO(out, rc);
+
+ if (S_ISDIR(attr->la_mode)) {
+ rc = mdo_declare_ref_add(env, p, handle);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ if (spec->sp_cr_flags & MDS_OPEN_VOLATILE) {
+ rc = orph_declare_index_insert(env, c, attr->la_mode, handle);
+ if (rc)
+ GOTO(out, rc);
+ } else {
+ struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
- if (!(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) {
- struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
+ rc = mdo_declare_index_insert(env, p, mdo2fid(c), name->ln_name,
+ handle);
+ if (rc)
+ return rc;
+ rc = mdd_declare_links_add(env, c, handle, ldata);
+ if (rc)
+ return rc;
*la = *attr;
la->la_valid = LA_CTIME | LA_MTIME;
RETURN(rc);
}
+/**
+ * Create a metadata object and initialize it, set acl, xattr.
+ **/
+static int mdd_object_create(const struct lu_env *env, struct mdd_object *pobj,
+ struct mdd_object *son, struct lu_attr *attr,
+ struct md_op_spec *spec, struct lu_buf *acl_buf,
+ struct lu_buf *def_acl_buf,
+ struct dt_allocation_hint *hint,
+ struct thandle *handle)
+{
+ int rc;
+
+ mdd_write_lock(env, son, MOR_TGT_CHILD);
+ rc = mdd_object_create_internal(env, NULL, son, attr, handle, spec,
+ hint);
+ if (rc)
+ GOTO(unlock, rc);
+
+#ifdef CONFIG_FS_POSIX_ACL
+ if (def_acl_buf != NULL && def_acl_buf->lb_len > 0 &&
+ S_ISDIR(attr->la_mode)) {
+ /* set default acl */
+ rc = mdo_xattr_set(env, son, def_acl_buf,
+ XATTR_NAME_ACL_DEFAULT, 0,
+ handle, BYPASS_CAPA);
+ if (rc)
+ GOTO(err_destroy, rc);
+ }
+ /* set its own acl */
+ if (acl_buf != NULL && acl_buf->lb_len > 0) {
+ rc = mdo_xattr_set(env, son, acl_buf,
+ XATTR_NAME_ACL_ACCESS,
+ 0, handle, BYPASS_CAPA);
+ if (rc)
+ GOTO(err_destroy, rc);
+ }
+#endif
+
+ rc = mdd_object_initialize(env, mdo2fid(pobj), son, attr, handle,
+ spec);
+ if (rc != 0)
+ GOTO(err_destroy, rc);
+
+ /*
+ * in case of replay we just set LOVEA provided by the client
+ * XXX: I think it would be interesting to try "old" way where
+ * MDT calls this xattr_set(LOV) in a different transaction.
+ * probably this way we code can be made better.
+ */
+ if (spec->no_create || (spec->sp_cr_flags & MDS_OPEN_HAS_EA &&
+ S_ISREG(attr->la_mode))) {
+ const struct lu_buf *buf;
+
+ buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
+ spec->u.sp_ea.eadatalen);
+ rc = mdo_xattr_set(env, son, buf, XATTR_NAME_LOV, 0, handle,
+ BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(err_destroy, rc);
+ }
+
+ if (S_ISLNK(attr->la_mode)) {
+ struct lu_ucred *uc = lu_ucred_assert(env);
+ struct dt_object *dt = mdd_object_child(son);
+ const char *target_name = spec->u.sp_symname;
+ int sym_len = strlen(target_name);
+ const struct lu_buf *buf;
+ loff_t pos = 0;
+
+ buf = mdd_buf_get_const(env, target_name, sym_len);
+ rc = dt->do_body_ops->dbo_write(env, dt, buf, &pos, handle,
+ mdd_object_capa(env, son),
+ uc->uc_cap &
+ CFS_CAP_SYS_RESOURCE_MASK);
+
+ if (rc == sym_len)
+ rc = 0;
+ else
+ GOTO(err_initlized, rc = -EFAULT);
+ }
+
+err_initlized:
+ if (unlikely(rc != 0)) {
+ int rc2;
+ if (S_ISDIR(attr->la_mode)) {
+ /* Drop the reference, no need to delete "."/"..",
+ * because the object to be destroied directly. */
+ rc2 = mdo_ref_del(env, son, handle);
+ if (rc2 != 0)
+ GOTO(unlock, rc);
+ }
+ rc2 = mdo_ref_del(env, son, handle);
+ if (rc2 != 0)
+ GOTO(unlock, rc);
+err_destroy:
+ mdo_destroy(env, son, handle);
+ }
+unlock:
+ mdd_write_unlock(env, son);
+ RETURN(rc);
+}
+
/*
* Create object and insert it into namespace.
*/
struct lu_buf def_acl_buf;
struct linkea_data *ldata = &info->mti_link_data;
const char *name = lname->ln_name;
- int rc, created = 0, initialized = 0, inserted = 0;
+ struct dt_allocation_hint *hint = &mdd_env_info(env)->mti_hint;
+ int rc;
ENTRY;
/*
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_DQACQ_NET))
GOTO(out_free, rc = -EINPROGRESS);
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ GOTO(out_free, rc = PTR_ERR(handle));
+
acl_buf.lb_buf = info->mti_xattr_buf;
acl_buf.lb_len = sizeof(info->mti_xattr_buf);
def_acl_buf.lb_buf = info->mti_key;
def_acl_buf.lb_len = sizeof(info->mti_key);
rc = mdd_acl_init(env, mdd_pobj, attr, &def_acl_buf, &acl_buf);
if (rc < 0)
- GOTO(out_free, rc);
-
- mdd_object_make_hint(env, mdd_pobj, son, attr, spec);
+ GOTO(out_stop, rc);
- handle = mdd_trans_create(env, mdd);
- if (IS_ERR(handle))
- GOTO(out_free, rc = PTR_ERR(handle));
+ mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint);
memset(ldata, 0, sizeof(*ldata));
- mdd_linkea_prepare(env, son, NULL, NULL, mdd_object_fid(mdd_pobj),
- lname, 1, 0, ldata);
+ rc = mdd_linkea_prepare(env, son, NULL, NULL,
+ mdd_object_fid(mdd_pobj),
+ lname, 1, 0, ldata);
rc = mdd_declare_create(env, mdd, mdd_pobj, son, lname, attr,
- handle, spec, ldata, &def_acl_buf, &acl_buf);
+ handle, spec, ldata, &def_acl_buf, &acl_buf,
+ hint);
if (rc)
GOTO(out_stop, rc);
if (rc)
GOTO(out_stop, rc);
- mdd_write_lock(env, son, MOR_TGT_CHILD);
- rc = mdd_object_create_internal(env, NULL, son, attr, handle, spec);
- if (rc) {
- mdd_write_unlock(env, son);
- GOTO(cleanup, rc);
- }
-
- created = 1;
-
-#ifdef CONFIG_FS_POSIX_ACL
- if (def_acl_buf.lb_len > 0 && S_ISDIR(attr->la_mode)) {
- /* set default acl */
- rc = mdo_xattr_set(env, son, &def_acl_buf,
- XATTR_NAME_ACL_DEFAULT, 0,
- handle, BYPASS_CAPA);
- if (rc) {
- mdd_write_unlock(env, son);
- GOTO(cleanup, rc);
- }
- }
- /* set its own acl */
- if (acl_buf.lb_len > 0) {
- rc = mdo_xattr_set(env, son, &acl_buf,
- XATTR_NAME_ACL_ACCESS,
- 0, handle, BYPASS_CAPA);
- if (rc) {
- mdd_write_unlock(env, son);
- GOTO(cleanup, rc);
- }
- }
-#endif
-
- rc = mdd_object_initialize(env, mdo2fid(mdd_pobj), lname,
- son, attr, handle, spec, ldata);
-
- /*
- * in case of replay we just set LOVEA provided by the client
- * XXX: I think it would be interesting to try "old" way where
- * MDT calls this xattr_set(LOV) in a different transaction.
- * probably this way we code can be made better.
- */
- if (rc == 0 && (spec->no_create ||
- (spec->sp_cr_flags & MDS_OPEN_HAS_EA &&
- S_ISREG(attr->la_mode)))) {
- const struct lu_buf *buf;
-
- buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
- spec->u.sp_ea.eadatalen);
- rc = mdo_xattr_set(env, son, buf, XATTR_NAME_LOV, 0, handle,
- BYPASS_CAPA);
- }
-
- if (rc == 0 && spec->sp_cr_flags & MDS_OPEN_VOLATILE)
- rc = __mdd_orphan_add(env, son, handle);
-
- mdd_write_unlock(env, son);
-
+ rc = mdd_object_create(env, mdd_pobj, son, attr, spec, &acl_buf,
+ &def_acl_buf, hint, handle);
if (rc != 0)
- /*
- * Object has no links, so it will be destroyed when last
- * reference is released. (XXX not now.)
- */
- GOTO(cleanup, rc);
-
- initialized = 1;
+ GOTO(out_stop, rc);
- if (!(spec->sp_cr_flags & MDS_OPEN_VOLATILE))
+ if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) {
+ mdd_write_lock(env, son, MOR_TGT_CHILD);
+ rc = __mdd_orphan_add(env, son, handle);
+ mdd_write_unlock(env, son);
+ if (rc != 0)
+ GOTO(err_created, rc);
+ } else {
rc = __mdd_index_insert(env, mdd_pobj, mdo2fid(son),
name, S_ISDIR(attr->la_mode), handle,
mdd_object_capa(env, mdd_pobj));
+ if (rc != 0)
+ GOTO(err_created, rc);
- if (rc != 0)
- GOTO(cleanup, rc);
-
- inserted = 1;
-
- if (S_ISLNK(attr->la_mode)) {
- struct lu_ucred *uc = lu_ucred_assert(env);
- struct dt_object *dt = mdd_object_child(son);
- const char *target_name = spec->u.sp_symname;
- int sym_len = strlen(target_name);
- const struct lu_buf *buf;
- loff_t pos = 0;
-
- buf = mdd_buf_get_const(env, target_name, sym_len);
- rc = dt->do_body_ops->dbo_write(env, dt, buf, &pos, handle,
- mdd_object_capa(env, son),
- uc->uc_cap &
- CFS_CAP_SYS_RESOURCE_MASK);
-
- if (rc == sym_len)
- rc = 0;
- else
- GOTO(cleanup, rc = -EFAULT);
- }
-
- /* volatile file creation does not update parent directory times */
- if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
- GOTO(cleanup, rc = 0);
+ mdd_links_add(env, son, mdo2fid(mdd_pobj), lname, handle,
+ ldata, 1);
- /* update parent directory mtime/ctime */
- *la = *attr;
- la->la_valid = LA_CTIME | LA_MTIME;
- rc = mdd_update_time(env, mdd_pobj, pattr, la, handle);
- if (rc)
- GOTO(cleanup, rc);
+ /* update parent directory mtime/ctime */
+ *la = *attr;
+ la->la_valid = LA_CTIME | LA_MTIME;
+ rc = mdd_update_time(env, mdd_pobj, pattr, la, handle);
+ if (rc)
+ GOTO(err_insert, rc);
+ }
- EXIT;
-cleanup:
- if (rc != 0 && created != 0) {
+ EXIT;
+err_insert:
+ if (rc != 0) {
int rc2;
- if (inserted != 0) {
- if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
- rc2 = __mdd_orphan_del(env, son, handle);
- else
- rc2 = __mdd_index_delete(env, mdd_pobj, name,
- S_ISDIR(attr->la_mode),
- handle, BYPASS_CAPA);
- if (rc2 != 0)
- goto out_stop;
- }
+ if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
+ rc2 = __mdd_orphan_del(env, son, handle);
+ else
+ rc2 = __mdd_index_delete(env, mdd_pobj, name,
+ S_ISDIR(attr->la_mode),
+ handle, BYPASS_CAPA);
+ if (rc2 != 0)
+ goto out_stop;
+err_created:
mdd_write_lock(env, son, MOR_TGT_CHILD);
- if (initialized != 0 && S_ISDIR(attr->la_mode)) {
+ if (S_ISDIR(attr->la_mode)) {
/* Drop the reference, no need to delete "."/"..",
* because the object to be destroied directly. */
rc2 = mdo_ref_del(env, son, handle);
goto out_stop;
}
}
-
rc2 = mdo_ref_del(env, son, handle);
if (rc2 != 0) {
mdd_write_unlock(env, son);
if (rc)
return rc;
- rc = mdd_declare_finish_unlink(env, mdd_tobj, ma, handle);
+ rc = mdd_declare_finish_unlink(env, mdd_tobj, handle);
if (rc)
return rc;
}
return rc;
}
+/**
+ * During migration once the parent FID has been changed,
+ * we need update the parent FID in linkea.
+ **/
+static int mdd_linkea_update_child_internal(const struct lu_env *env,
+ struct mdd_object *parent,
+ struct mdd_object *child,
+ const char *name, int namelen,
+ struct thandle *handle,
+ bool declare)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct linkea_data ldata = {0};
+ struct lu_buf *buf = &info->mti_link_buf;
+ int count;
+ int rc = 0;
+
+ ENTRY;
+
+ buf = lu_buf_check_and_alloc(buf, PATH_MAX);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+
+ ldata.ld_buf = buf;
+ rc = mdd_links_read(env, child, &ldata);
+ if (rc != 0) {
+ if (rc == -ENOENT || rc == -ENODATA)
+ rc = 0;
+ RETURN(rc);
+ }
+
+ LASSERT(ldata.ld_leh != NULL);
+ ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1);
+ for (count = 0; count < ldata.ld_leh->leh_reccount; count++) {
+ struct mdd_device *mdd = mdo2mdd(&child->mod_obj);
+ struct lu_name lname;
+ struct lu_fid fid;
+
+ linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen,
+ &lname, &fid);
+
+ if (strncmp(lname.ln_name, name, namelen) ||
+ lu_fid_eq(&fid, mdd_object_fid(parent))) {
+ ldata.ld_lee = (struct link_ea_entry *)
+ ((char *)ldata.ld_lee +
+ ldata.ld_reclen);
+ continue;
+ }
+
+ CDEBUG(D_INFO, "%s: update "DFID" with %.*s:"DFID"\n",
+ mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(child)),
+ lname.ln_namelen, lname.ln_name,
+ PFID(mdd_object_fid(parent)));
+ /* update to the new parent fid */
+ linkea_entry_pack(ldata.ld_lee, &lname,
+ mdd_object_fid(parent));
+ if (declare)
+ rc = mdd_declare_links_add(env, child, handle, &ldata);
+ else
+ rc = mdd_links_write(env, child, &ldata, handle);
+ break;
+ }
+ RETURN(rc);
+}
+
+static int mdd_linkea_declare_update_child(const struct lu_env *env,
+ struct mdd_object *parent,
+ struct mdd_object *child,
+ const char *name, int namelen,
+ struct thandle *handle)
+{
+ return mdd_linkea_update_child_internal(env, parent, child, name,
+ namelen, handle, true);
+}
+
+static int mdd_linkea_update_child(const struct lu_env *env,
+ struct mdd_object *parent,
+ struct mdd_object *child,
+ const char *name, int namelen,
+ struct thandle *handle)
+{
+ return mdd_linkea_update_child_internal(env, parent, child, name,
+ namelen, handle, false);
+}
+
+static int mdd_update_linkea_internal(const struct lu_env *env,
+ struct mdd_object *mdd_pobj,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj,
+ const struct lu_name *child_name,
+ struct thandle *handle,
+ int declare)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct linkea_data *ldata = &info->mti_link_data;
+ int count;
+ int rc = 0;
+ ENTRY;
+
+ rc = mdd_links_read(env, mdd_sobj, ldata);
+ if (rc != 0) {
+ if (rc == -ENOENT || rc == -ENODATA)
+ rc = 0;
+ RETURN(rc);
+ }
+
+ if (declare)
+ rc = mdd_declare_links_add(env, mdd_tobj, handle, ldata);
+ else
+ rc = mdd_links_write(env, mdd_tobj, ldata, handle);
+
+ if (rc != 0)
+ RETURN(rc);
+
+ /* If it is mulitple links file, we need update the name entry for
+ * all parent */
+ LASSERT(ldata->ld_leh != NULL);
+ ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1);
+ for (count = 0; count < ldata->ld_leh->leh_reccount; count++) {
+ struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
+ struct mdd_object *pobj;
+ struct lu_name lname;
+ struct lu_fid fid;
+
+ linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen,
+ &lname, &fid);
+ ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee +
+ ldata->ld_reclen);
+ pobj = mdd_object_find(env, mdd, &fid);
+ if (IS_ERR(pobj)) {
+ CWARN("%s: cannot find obj "DFID": rc = %ld\n",
+ mdd2obd_dev(mdd)->obd_name, PFID(&fid),
+ PTR_ERR(pobj));
+ continue;
+ }
+
+ if (!mdd_object_exists(pobj)) {
+ CDEBUG(D_INFO, "%s: obj "DFID" does not exist\n",
+ mdd2obd_dev(mdd)->obd_name, PFID(&fid));
+ GOTO(next_put, rc);
+ }
+
+ if (pobj == mdd_pobj &&
+ lname.ln_namelen == child_name->ln_namelen &&
+ strncmp(lname.ln_name, child_name->ln_name,
+ lname.ln_namelen) == 0) {
+ CDEBUG(D_INFO, "%s: skip its own %s: "DFID"\n",
+ mdd2obd_dev(mdd)->obd_name, child_name->ln_name,
+ PFID(&fid));
+ GOTO(next_put, rc);
+ }
+
+ CDEBUG(D_INFO, "%s: update "DFID" with "DNAME":"DFID"\n",
+ mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(pobj)),
+ PNAME(&lname), PFID(mdd_object_fid(mdd_tobj)));
+
+ if (declare) {
+ /* Remove source name from source directory */
+ /* Insert new fid with target name into target dir */
+ rc = mdo_declare_index_delete(env, pobj, lname.ln_name,
+ handle);
+ if (rc)
+ GOTO(next_put, rc);
+
+ rc = mdo_declare_index_insert(env, pobj,
+ mdd_object_fid(mdd_tobj),
+ lname.ln_name, handle);
+ if (rc)
+ GOTO(next_put, rc);
+
+ rc = mdo_declare_ref_add(env, mdd_tobj, handle);
+ if (rc)
+ GOTO(next_put, rc);
+
+ rc = mdo_declare_ref_del(env, mdd_sobj, handle);
+ if (rc)
+ GOTO(next_put, rc);
+ } else {
+ rc = __mdd_index_delete(env, pobj, lname.ln_name,
+ 0, handle,
+ mdd_object_capa(env, pobj));
+ if (rc)
+ GOTO(next_put, rc);
+
+ rc = __mdd_index_insert(env, pobj,
+ mdd_object_fid(mdd_tobj),
+ lname.ln_name, 0, handle,
+ mdd_object_capa(env, pobj));
+ if (rc)
+ GOTO(next_put, rc);
+
+ mdd_write_lock(env, mdd_tobj, MOR_SRC_CHILD);
+ rc = mdo_ref_add(env, mdd_tobj, handle);
+ mdd_write_unlock(env, mdd_tobj);
+ if (rc)
+ GOTO(next_put, rc);
+
+ mdd_write_lock(env, mdd_sobj, MOR_TGT_CHILD);
+ mdo_ref_del(env, mdd_sobj, handle);
+ mdd_write_unlock(env, mdd_sobj);
+ }
+next_put:
+ mdd_object_put(env, pobj);
+ if (rc != 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+static int mdd_migrate_xattrs(const struct lu_env *env,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
+ char *xname;
+ struct thandle *handle;
+ struct lu_buf xbuf;
+ int xlen;
+ int rem;
+ int xsize;
+ int list_xsize;
+ struct lu_buf list_xbuf;
+ int rc;
+
+ /* retrieve xattr list from the old object */
+ list_xsize = mdo_xattr_list(env, mdd_sobj, &LU_BUF_NULL,
+ mdd_object_capa(env, mdd_sobj));
+ if (list_xsize == -ENODATA)
+ return 0;
+
+ if (list_xsize < 0)
+ return list_xsize;
+
+ lu_buf_check_and_alloc(&info->mti_big_buf, list_xsize);
+ if (info->mti_big_buf.lb_buf == NULL)
+ return -ENOMEM;
+
+ list_xbuf.lb_buf = info->mti_big_buf.lb_buf;
+ list_xbuf.lb_len = list_xsize;
+ rc = mdo_xattr_list(env, mdd_sobj, &list_xbuf,
+ mdd_object_capa(env, mdd_sobj));
+ if (rc < 0)
+ return rc;
+ rc = 0;
+ rem = list_xsize;
+ xname = list_xbuf.lb_buf;
+ while (rem > 0) {
+ xlen = strnlen(xname, rem - 1) + 1;
+ if (strcmp(XATTR_NAME_LINK, xname) == 0 ||
+ strcmp(XATTR_NAME_LMA, xname) == 0 ||
+ strcmp(XATTR_NAME_LMV, xname) == 0)
+ goto next;
+
+ /* For directory, if there are default layout, migrate here */
+ if (strcmp(XATTR_NAME_LOV, xname) == 0 &&
+ !S_ISDIR(lu_object_attr(&mdd_sobj->mod_obj.mo_lu)))
+ goto next;
+
+ xsize = mdo_xattr_get(env, mdd_sobj, &LU_BUF_NULL,
+ xname,
+ mdd_object_capa(env, mdd_sobj));
+ if (xsize == -ENODATA)
+ goto next;
+ if (xsize < 0)
+ GOTO(out, rc);
+
+ lu_buf_check_and_alloc(&info->mti_link_buf, xsize);
+ if (info->mti_link_buf.lb_buf == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ xbuf.lb_len = xsize;
+ xbuf.lb_buf = info->mti_link_buf.lb_buf;
+ rc = mdo_xattr_get(env, mdd_sobj, &xbuf, xname,
+ mdd_object_capa(env, mdd_sobj));
+ if (rc == -ENODATA)
+ goto next;
+ if (rc < 0)
+ GOTO(out, rc);
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ GOTO(out, rc = PTR_ERR(handle));
+
+ rc = mdo_declare_xattr_set(env, mdd_tobj, &xbuf, xname, 0,
+ handle);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+ /* Note: this transaction is part of migration, and it is not
+ * the last step of migration, so we set th_local = 1 to avoid
+ * update last rcvd for this transaction */
+ handle->th_local = 1;
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ rc = mdo_xattr_set(env, mdd_tobj, &xbuf, xname, 0, handle,
+ mdd_object_capa(env, mdd_sobj));
+ if (rc == -EEXIST)
+ GOTO(stop_trans, rc = 0);
+
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+stop_trans:
+ mdd_trans_stop(env, mdd, rc, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+next:
+ rem -= xlen;
+ memmove(xname, xname + xlen, rem);
+ }
+out:
+ return rc;
+}
+
+static int mdd_declare_migrate_create(const struct lu_env *env,
+ struct mdd_object *mdd_pobj,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj,
+ struct md_op_spec *spec,
+ struct lu_attr *la,
+ union lmv_mds_md *mgr_ea,
+ struct thandle *handle)
+{
+ struct lu_attr *la_flag = MDD_ENV_VAR(env, la_for_fix);
+ const struct lu_buf *buf;
+ int rc;
+ int mgr_easize;
+
+ rc = mdd_declare_object_create_internal(env, mdd_pobj, mdd_tobj, la,
+ handle, spec, NULL);
+ if (rc != 0)
+ return rc;
+
+ rc = mdd_declare_object_initialize(env, mdd_pobj, mdd_tobj, la,
+ handle);
+ if (rc != 0)
+ return rc;
+
+ if (S_ISLNK(la->la_mode)) {
+ const char *target_name = spec->u.sp_symname;
+ int sym_len = strlen(target_name);
+ const struct lu_buf *buf;
+
+ buf = mdd_buf_get_const(env, target_name, sym_len);
+ rc = dt_declare_record_write(env, mdd_object_child(mdd_tobj),
+ buf, 0, handle);
+ if (rc != 0)
+ return rc;
+ }
+
+ if (spec->u.sp_ea.eadata != NULL && spec->u.sp_ea.eadatalen != 0) {
+ buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
+ spec->u.sp_ea.eadatalen);
+ rc = mdo_declare_xattr_set(env, mdd_tobj, buf, XATTR_NAME_LOV,
+ 0, handle);
+ if (rc)
+ return rc;
+ }
+
+ mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_MIGRATE);
+ buf = mdd_buf_get_const(env, mgr_ea, mgr_easize);
+ rc = mdo_declare_xattr_set(env, mdd_sobj, buf, XATTR_NAME_LMV,
+ 0, handle);
+ if (rc)
+ return rc;
+
+ la_flag->la_valid = LA_FLAGS;
+ la_flag->la_flags = LUSTRE_IMMUTABLE_FL;
+ mdd_flags_xlate(mdd_sobj, la_flag->la_flags);
+ rc = mdo_declare_attr_set(env, mdd_sobj, la_flag, handle);
+
+ return rc;
+}
+
+static int mdd_migrate_create(const struct lu_env *env,
+ struct mdd_object *mdd_pobj,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj,
+ struct lu_attr *la)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
+ struct md_op_spec *spec = &info->mti_spec;
+ struct lu_buf lmm_buf = { 0 };
+ struct lu_buf link_buf = { 0 };
+ const struct lu_buf *buf;
+ struct thandle *handle;
+ struct lmv_mds_md_v1 *mgr_ea;
+ struct lu_attr *la_flag = MDD_ENV_VAR(env, la_for_fix);
+ int mgr_easize;
+ int rc;
+ ENTRY;
+
+ /* prepare spec for create */
+ memset(spec, 0, sizeof(*spec));
+ spec->sp_cr_lookup = 0;
+ spec->sp_feat = &dt_directory_features;
+ if (S_ISLNK(la->la_mode)) {
+ buf = lu_buf_check_and_alloc(
+ &mdd_env_info(env)->mti_big_buf,
+ la->la_size + 1);
+ link_buf = *buf;
+ link_buf.lb_len = la->la_size + 1;
+ rc = mdd_readlink(env, &mdd_sobj->mod_obj, &link_buf);
+ if (rc <= 0) {
+ rc = rc != 0 ? rc : -EFAULT;
+ CERROR("%s: "DFID" readlink failed: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name,
+ PFID(mdd_object_fid(mdd_sobj)), rc);
+ RETURN(rc);
+ }
+ spec->u.sp_symname = link_buf.lb_buf;
+ } else{
+ /* retrieve lov of the old object */
+ rc = mdd_get_lov_ea(env, mdd_sobj, &lmm_buf);
+ if (rc != 0 && rc != -ENODATA)
+ RETURN(rc);
+ if (lmm_buf.lb_buf != NULL && lmm_buf.lb_len != 0) {
+ spec->u.sp_ea.eadata = lmm_buf.lb_buf;
+ spec->u.sp_ea.eadatalen = lmm_buf.lb_len;
+ spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
+ }
+ }
+
+ mgr_ea = (struct lmv_mds_md_v1 *)info->mti_xattr_buf;
+ mgr_ea->lmv_magic = cpu_to_le32(LMV_MAGIC_MIGRATE);
+ mgr_ea->lmv_stripe_count = cpu_to_le32(2);
+ mgr_ea->lmv_master_mdt_index = mdd_seq_site(mdd)->ss_node_id;
+ mgr_ea->lmv_hash_type = cpu_to_le32(LMV_HASH_TYPE_MIGRATION);
+ fid_cpu_to_le(&mgr_ea->lmv_stripe_fids[0], mdd_object_fid(mdd_sobj));
+ fid_cpu_to_le(&mgr_ea->lmv_stripe_fids[1], mdd_object_fid(mdd_tobj));
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ GOTO(out_free, rc = PTR_ERR(handle));
+
+ /* Note: this transaction is part of migration, and it is not
+ * the last step of migration, so we set th_local = 1 to avoid
+ * update last rcvd for this transaction */
+ handle->th_local = 1;
+ rc = mdd_declare_migrate_create(env, mdd_pobj, mdd_sobj, mdd_tobj,
+ spec, la,
+ (union lmv_mds_md *)info->mti_xattr_buf,
+ handle);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ /* create the target object */
+ rc = mdd_object_create(env, mdd_pobj, mdd_tobj, la, spec, NULL, NULL,
+ NULL, handle);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ if (lmm_buf.lb_buf != NULL && lmm_buf.lb_len != 0) {
+ buf = mdd_buf_get_const(env, lmm_buf.lb_buf, lmm_buf.lb_len);
+ rc = mdo_xattr_set(env, mdd_tobj, buf, XATTR_NAME_LOV,
+ 0, handle, mdd_object_capa(env, mdd_sobj));
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+ }
+
+ /* Set MIGRATE EA on the source inode, so once the migration needs
+ * to be re-done during failover, the re-do process can locate the
+ * target object which is already being created. */
+ mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_MIGRATE);
+ buf = mdd_buf_get_const(env, mgr_ea, mgr_easize);
+ rc = mdo_xattr_set(env, mdd_sobj, buf, XATTR_NAME_LMV, 0,
+ handle, mdd_object_capa(env, mdd_sobj));
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ /* Set immutable flag, so any modification is disabled until
+ * the migration is done. Once the migration is interrupted,
+ * if the resume process find the migrating object has both
+ * IMMUTALBE flag and MIGRATE EA, it need to clear IMMUTABLE
+ * flag and approve the migration */
+ la_flag->la_valid = LA_FLAGS;
+ la_flag->la_flags = LUSTRE_IMMUTABLE_FL;
+ mdd_flags_xlate(mdd_sobj, la_flag->la_flags);
+ rc = mdo_attr_set(env, mdd_sobj, la_flag, handle,
+ mdd_object_capa(env, mdd_sobj));
+stop_trans:
+ if (handle != NULL)
+ mdd_trans_stop(env, mdd, rc, handle);
+out_free:
+ if (lmm_buf.lb_buf != NULL)
+ OBD_FREE(lmm_buf.lb_buf, lmm_buf.lb_len);
+ RETURN(rc);
+}
+
+static int mdd_migrate_entries(const struct lu_env *env,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj)
+{
+ struct dt_object *next = mdd_object_child(mdd_sobj);
+ struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
+ struct dt_object *dt_tobj = mdd_object_child(mdd_tobj);
+ struct thandle *handle;
+ struct dt_it *it;
+ const struct dt_it_ops *iops;
+ int rc;
+ int result;
+ struct lu_dirent *ent;
+ ENTRY;
+
+ OBD_ALLOC(ent, NAME_MAX + sizeof(*ent) + 1);
+ if (ent == NULL)
+ RETURN(-ENOMEM);
+
+ if (!dt_try_as_dir(env, next))
+ GOTO(out_ent, rc = -ENOTDIR);
+ /*
+ * iterate directories
+ */
+ iops = &next->do_index_ops->dio_it;
+ it = iops->init(env, next, LUDA_FID | LUDA_TYPE,
+ mdd_object_capa(env, mdd_sobj));
+ if (IS_ERR(it))
+ GOTO(out_ent, rc = PTR_ERR(it));
+
+ rc = iops->load(env, it, 0);
+ if (rc == 0)
+ rc = iops->next(env, it);
+ else if (rc > 0)
+ rc = 0;
+ /*
+ * At this point and across for-loop:
+ *
+ * rc == 0 -> ok, proceed.
+ * rc > 0 -> end of directory.
+ * rc < 0 -> error.
+ */
+ do {
+ struct mdd_object *child;
+ char *name = mdd_env_info(env)->mti_key;
+ int len;
+ int recsize;
+ int is_dir;
+ bool target_exist = false;
+
+ len = iops->key_size(env, it);
+ if (len == 0)
+ goto next;
+
+ result = iops->rec(env, it, (struct dt_rec *)ent,
+ LUDA_FID | LUDA_TYPE);
+ if (result == -ESTALE)
+ goto next;
+ if (result != 0) {
+ rc = result;
+ goto out;
+ }
+
+ fid_le_to_cpu(&ent->lde_fid, &ent->lde_fid);
+ recsize = le16_to_cpu(ent->lde_reclen);
+
+ /* Insert new fid with target name into target dir */
+ if ((ent->lde_namelen == 1 && ent->lde_name[0] == '.') ||
+ (ent->lde_namelen == 2 && ent->lde_name[0] == '.' &&
+ ent->lde_name[1] == '.'))
+ goto next;
+
+ child = mdd_object_find(env, mdd, &ent->lde_fid);
+ if (IS_ERR(child))
+ GOTO(out, rc = PTR_ERR(child));
+
+ is_dir = S_ISDIR(lu_object_attr(&child->mod_obj.mo_lu));
+
+ snprintf(name, ent->lde_namelen + 1, "%s", ent->lde_name);
+
+ /* Check whether the name has been inserted to the target */
+ if (dt_try_as_dir(env, dt_tobj)) {
+ struct lu_fid *fid = &mdd_env_info(env)->mti_fid2;
+
+ rc = dt_tobj->do_index_ops->dio_lookup(env, dt_tobj,
+ (struct dt_rec *)fid,
+ (struct dt_key *)name,
+ mdd_object_capa(env, mdd_tobj));
+ if (unlikely(rc == 0))
+ target_exist = true;
+ }
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ GOTO(out, rc = PTR_ERR(handle));
+
+ /* Note: this transaction is part of migration, and it is not
+ * the last step of migration, so we set th_local = 1 to avoid
+ * updating last rcvd for this transaction */
+ handle->th_local = 1;
+ if (likely(!target_exist)) {
+ rc = mdo_declare_index_insert(env, mdd_tobj,
+ &ent->lde_fid,
+ name, handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ if (is_dir) {
+ rc = mdo_declare_ref_add(env, mdd_tobj, handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+ }
+ }
+
+ rc = mdo_declare_index_delete(env, mdd_sobj, name, handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ if (is_dir) {
+ rc = mdo_declare_ref_del(env, mdd_sobj, handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ /* Update .. for child */
+ rc = mdo_declare_index_delete(env, child, dotdot,
+ handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ rc = mdo_declare_index_insert(env, child,
+ mdd_object_fid(mdd_tobj),
+ dotdot, handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+ }
+
+ rc = mdd_linkea_declare_update_child(env, mdd_tobj,
+ child, name,
+ strlen(name),
+ handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0) {
+ CERROR("%s: transaction start failed: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name, rc);
+ GOTO(out_put, rc);
+ }
+
+ if (likely(!target_exist)) {
+ rc = __mdd_index_insert(env, mdd_tobj, &ent->lde_fid,
+ name, is_dir, handle,
+ mdd_object_capa(env, mdd_tobj));
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ if (is_dir) {
+ rc = mdo_ref_add(env, mdd_tobj, handle);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ }
+ }
+
+ rc = __mdd_index_delete(env, mdd_sobj, name, is_dir, handle,
+ mdd_object_capa(env, mdd_sobj));
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ if (is_dir) {
+ rc = __mdd_index_delete_only(env, child, dotdot, handle,
+ mdd_object_capa(env, child));
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ rc = __mdd_index_insert_only(env, child,
+ mdd_object_fid(mdd_tobj),
+ dotdot, handle,
+ mdd_object_capa(env, child));
+ if (rc != 0)
+ GOTO(out_put, rc);
+ }
+
+ rc = mdd_linkea_update_child(env, mdd_tobj, child, name,
+ strlen(name), handle);
+
+out_put:
+ mdd_object_put(env, child);
+ mdd_trans_stop(env, mdd, rc, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+next:
+ result = iops->next(env, it);
+ if (OBD_FAIL_CHECK(OBD_FAIL_MIGRATE_ENTRIES))
+ GOTO(out, rc = -EINTR);
+
+ if (result == -ESTALE)
+ goto next;
+ } while (result == 0);
+out:
+ iops->put(env, it);
+ iops->fini(env, it);
+out_ent:
+ OBD_FREE(ent, NAME_MAX + sizeof(*ent) + 1);
+ RETURN(rc);
+}
+
+static int mdd_declare_update_linkea(const struct lu_env *env,
+ struct mdd_object *mdd_pobj,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj,
+ struct thandle *handle,
+ const struct lu_name *child_name)
+{
+ return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj,
+ child_name, handle, 1);
+}
+
+static int mdd_update_linkea(const struct lu_env *env,
+ struct mdd_object *mdd_pobj,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj,
+ struct thandle *handle,
+ const struct lu_name *child_name)
+{
+ return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj,
+ child_name, handle, 0);
+}
+
+static int mdd_declare_migrate_update_name(const struct lu_env *env,
+ struct mdd_object *mdd_pobj,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj,
+ const struct lu_name *lname,
+ struct lu_attr *la,
+ struct lu_attr *parent_la,
+ struct thandle *handle)
+{
+ struct lu_attr *la_flag = MDD_ENV_VAR(env, tattr);
+ int rc;
+
+ /* Revert IMMUTABLE flag */
+ la_flag->la_valid = LA_FLAGS;
+ la_flag->la_flags = la->la_flags & ~LUSTRE_IMMUTABLE_FL;
+ mdd_flags_xlate(mdd_sobj, la_flag->la_flags);
+ rc = mdo_declare_attr_set(env, mdd_sobj, la_flag, handle);
+ if (rc != 0)
+ return rc;
+
+ /* delete entry from source dir */
+ rc = mdo_declare_index_delete(env, mdd_pobj, lname->ln_name, handle);
+ if (rc != 0)
+ return rc;
+
+ rc = mdd_declare_update_linkea(env, mdd_pobj, mdd_sobj,
+ mdd_tobj, handle, lname);
+ if (rc != 0)
+ return rc;
+
+ if (S_ISREG(mdd_object_type(mdd_sobj))) {
+ rc = mdo_declare_xattr_del(env, mdd_sobj, XATTR_NAME_LOV,
+ handle);
+ if (rc != 0)
+ return rc;
+ }
+
+ if (S_ISDIR(mdd_object_type(mdd_sobj))) {
+ rc = mdo_declare_ref_del(env, mdd_pobj, handle);
+ if (rc != 0)
+ return rc;
+ }
+
+ /* new name */
+ rc = mdo_declare_index_insert(env, mdd_pobj, mdo2fid(mdd_tobj),
+ lname->ln_name, handle);
+ if (rc != 0)
+ return rc;
+
+ if (S_ISDIR(mdd_object_type(mdd_sobj))) {
+ rc = mdo_declare_ref_add(env, mdd_pobj, handle);
+ if (rc != 0)
+ return rc;
+ }
+
+ /* delete old object */
+ rc = mdo_declare_ref_del(env, mdd_sobj, handle);
+ if (rc != 0)
+ return rc;
+
+ if (S_ISDIR(mdd_object_type(mdd_sobj))) {
+ /* delete old object */
+ rc = mdo_declare_ref_del(env, mdd_sobj, handle);
+ if (rc != 0)
+ return rc;
+ /* set nlink to 0 */
+ rc = mdo_declare_attr_set(env, mdd_sobj, la, handle);
+ if (rc != 0)
+ return rc;
+ }
+
+ rc = mdd_declare_finish_unlink(env, mdd_sobj, handle);
+ if (rc)
+ return rc;
+
+ rc = mdo_declare_attr_set(env, mdd_pobj, parent_la, handle);
+
+ return rc;
+}
+
+static int mdd_migrate_update_name(const struct lu_env *env,
+ struct mdd_object *mdd_pobj,
+ struct mdd_object *mdd_sobj,
+ struct mdd_object *mdd_tobj,
+ const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ struct lu_attr *p_la = MDD_ENV_VAR(env, la_for_fix);
+ struct lu_attr *so_attr = MDD_ENV_VAR(env, cattr);
+ struct lu_attr *la_flag = MDD_ENV_VAR(env, tattr);
+ struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
+ struct thandle *handle;
+ int is_dir = S_ISDIR(mdd_object_type(mdd_sobj));
+ const char *name = lname->ln_name;
+ int rc;
+ ENTRY;
+
+ /* update time for parent */
+ LASSERT(ma->ma_attr.la_valid & LA_CTIME);
+ p_la->la_ctime = p_la->la_mtime = ma->ma_attr.la_ctime;
+ p_la->la_valid = LA_CTIME;
+
+ rc = mdd_la_get(env, mdd_sobj, so_attr, mdd_object_capa(env, mdd_sobj));
+ if (rc != 0)
+ RETURN(rc);
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ rc = mdd_declare_migrate_update_name(env, mdd_pobj, mdd_sobj, mdd_tobj,
+ lname, so_attr, p_la, handle);
+ if (rc != 0) {
+ /* If the migration can not be fit in one transaction, just
+ * leave it in the original MDT */
+ if (rc == -E2BIG)
+ GOTO(stop_trans, rc = 0);
+ else
+ GOTO(stop_trans, rc);
+ }
+
+ CDEBUG(D_INFO, "%s: update "DFID"/"DFID" with %s:"DFID"\n",
+ mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(mdd_pobj)),
+ PFID(mdd_object_fid(mdd_sobj)), lname->ln_name,
+ PFID(mdd_object_fid(mdd_tobj)));
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ /* Revert IMMUTABLE flag */
+ la_flag->la_valid = LA_FLAGS;
+ la_flag->la_flags = so_attr->la_flags & ~LUSTRE_IMMUTABLE_FL;
+ mdd_flags_xlate(mdd_sobj, la_flag->la_flags);
+ rc = mdo_attr_set(env, mdd_sobj, la_flag, handle,
+ mdd_object_capa(env, mdd_pobj));
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ /* Remove source name from source directory */
+ rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle,
+ mdd_object_capa(env, mdd_pobj));
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ rc = mdd_update_linkea(env, mdd_pobj, mdd_sobj, mdd_tobj,
+ handle, lname);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ if (S_ISREG(so_attr->la_mode)) {
+ if (so_attr->la_nlink == 1) {
+ rc = mdo_xattr_del(env, mdd_sobj, XATTR_NAME_LOV,
+ handle,
+ mdd_object_capa(env, mdd_sobj));
+ if (rc != 0 && rc != -ENODATA)
+ GOTO(stop_trans, rc);
+ }
+ }
+
+ /* Insert new fid with target name into target dir */
+ rc = __mdd_index_insert(env, mdd_pobj, mdd_object_fid(mdd_tobj), name,
+ is_dir, handle, mdd_object_capa(env, mdd_pobj));
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ rc = mdd_links_add(env, mdd_tobj, mdo2fid(mdd_pobj), lname, handle,
+ NULL, 1);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ mdd_write_lock(env, mdd_sobj, MOR_SRC_CHILD);
+ mdo_ref_del(env, mdd_sobj, handle);
+ if (is_dir)
+ mdo_ref_del(env, mdd_sobj, handle);
+
+ ma->ma_attr = *so_attr;
+ ma->ma_valid |= MA_INODE;
+ rc = mdd_finish_unlink(env, mdd_sobj, ma, handle);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ rc = mdd_attr_set_internal(env, mdd_pobj, p_la, handle, 0);
+ if (rc != 0)
+ GOTO(stop_trans, rc);
+
+ mdd_write_unlock(env, mdd_sobj);
+
+stop_trans:
+ mdd_trans_stop(env, mdd, rc, handle);
+
+ RETURN(rc);
+}
+
+/**
+ * Check whether we should migrate the file/dir
+ * return val
+ * < 0 permission check failed or other error.
+ * = 0 the file can be migrated.
+ * > 0 the file does not need to be migrated, mostly
+ * for multiple link file
+ **/
+static int mdd_migrate_sanity_check(const struct lu_env *env,
+ struct mdd_object *pobj,
+ const struct lu_attr *pattr,
+ struct mdd_object *sobj,
+ struct lu_attr *sattr)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct linkea_data *ldata = &info->mti_link_data;
+ int mgr_easize;
+ struct lu_buf *mgr_buf;
+ int count;
+ int rc;
+
+ ENTRY;
+
+ mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_MIGRATE);
+ mgr_buf = lu_buf_check_and_alloc(&info->mti_big_buf, mgr_easize);
+ if (mgr_buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+
+ rc = mdo_xattr_get(env, sobj, mgr_buf, XATTR_NAME_LMV,
+ mdd_object_capa(env, sobj));
+ if (rc > 0) {
+ union lmv_mds_md *lmm = mgr_buf->lb_buf;
+
+ /* If the object has migrateEA, it means IMMUTE flag
+ * is being set by previous migration process, so it
+ * needs to override the IMMUTE flag, otherwise the
+ * following sanity check will fail */
+ if (le32_to_cpu(lmm->lmv_md_v1.lmv_magic) ==
+ LMV_MAGIC_MIGRATE) {
+ struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj);
+
+ sattr->la_flags &= ~LUSTRE_IMMUTABLE_FL;
+ sobj->mod_flags &= ~IMMUTE_OBJ;
+ CDEBUG(D_HA, "%s: "DFID" override IMMUTE FLAG\n",
+ mdd2obd_dev(mdd)->obd_name,
+ PFID(mdd_object_fid(sobj)));
+ }
+ }
+
+ rc = mdd_rename_sanity_check(env, pobj, pattr, pobj, pattr,
+ sobj, sattr, NULL, NULL);
+ if (rc != 0)
+ RETURN(rc);
+
+ /* Then it will check if the file should be migrated. If the file
+ * has mulitple links, we only need migrate the file if all of its
+ * entries has been migrated to the remote MDT */
+ if (!S_ISREG(sattr->la_mode) || sattr->la_nlink < 2)
+ RETURN(0);
+
+ rc = mdd_links_read(env, sobj, ldata);
+ if (rc != 0) {
+ /* For multiple links files, if there are no linkEA data at all,
+ * means the file might be created before linkEA is enabled, and
+ * all all of its links should not be migrated yet, otherwise
+ * it should have some linkEA there */
+ if (rc == -ENOENT || rc == -ENODATA)
+ RETURN(1);
+ RETURN(rc);
+ }
+
+ /* If it is mulitple links file, we need update the name entry for
+ * all parent */
+ LASSERT(ldata->ld_leh != NULL);
+ ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1);
+ for (count = 0; count < ldata->ld_leh->leh_reccount; count++) {
+ struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj);
+ struct mdd_object *lpobj;
+ struct lu_name lname;
+ struct lu_fid fid;
+
+ linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen,
+ &lname, &fid);
+ ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee +
+ ldata->ld_reclen);
+ lpobj = mdd_object_find(env, mdd, &fid);
+ if (IS_ERR(lpobj)) {
+ CWARN("%s: cannot find obj "DFID": rc = %ld\n",
+ mdd2obd_dev(mdd)->obd_name, PFID(&fid),
+ PTR_ERR(lpobj));
+ continue;
+ }
+
+ if (!mdd_object_exists(lpobj) || mdd_object_remote(lpobj)) {
+ CDEBUG(D_INFO, DFID"%.*s: is on remote MDT.\n",
+ PFID(&fid), lname.ln_namelen, lname.ln_name);
+ mdd_object_put(env, lpobj);
+ continue;
+ }
+
+ CDEBUG(D_INFO, DFID"still has local entry %.*s "DFID"\n",
+ PFID(mdd_object_fid(sobj)), lname.ln_namelen,
+ lname.ln_name, PFID(&fid));
+ mdd_object_put(env, lpobj);
+ rc = 1;
+ break;
+ }
+
+ RETURN(rc);
+}
+
+static int mdd_migrate(const struct lu_env *env, struct md_object *pobj,
+ const struct lu_fid *lf, const struct lu_name *lname,
+ struct md_object *tobj, struct md_attr *ma)
+{
+ struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
+ struct mdd_device *mdd = mdo2mdd(pobj);
+ struct mdd_object *mdd_sobj = NULL;
+ struct mdd_object *mdd_tobj = NULL;
+ struct lu_attr *so_attr = MDD_ENV_VAR(env, cattr);
+ struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
+ int rc;
+
+ ENTRY;
+ /* object has to be locked by mdt, so it must exist */
+ mdd_sobj = mdd_object_find(env, mdd, lf);
+ LASSERT(mdd_sobj != NULL);
+
+ /* If the file will being migrated, it will check whether
+ * the file is being opened by someone else right now */
+ mdd_read_lock(env, mdd_sobj, MOR_SRC_CHILD);
+ if (mdd_sobj->mod_count >= 1) {
+ CERROR("%s: "DFID"%s is already opened count %d: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name,
+ PFID(mdd_object_fid(mdd_sobj)), lname->ln_name,
+ mdd_sobj->mod_count, -EBUSY);
+ mdd_read_unlock(env, mdd_sobj);
+ GOTO(put, rc = -EBUSY);
+ }
+ mdd_read_unlock(env, mdd_sobj);
+
+ rc = mdd_la_get(env, mdd_sobj, so_attr, mdd_object_capa(env, mdd_sobj));
+ if (rc != 0)
+ GOTO(put, rc);
+
+ rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ rc = mdd_migrate_sanity_check(env, mdd_pobj, pattr, mdd_sobj, so_attr);
+ if (rc != 0) {
+ if (rc > 0)
+ rc = 0;
+ GOTO(put, rc);
+ }
+
+ /* Sigh, it is impossible to finish all of migration in a single
+ * transaction, for example migrating big directory entries to the
+ * new MDT, it needs insert all of name entries of children in the
+ * new directory.
+ *
+ * So migration will be done in multiple steps and transactions.
+ *
+ * 1. create an orphan object on the remote MDT in one transaction.
+ * 2. migrate extend attributes to the new target file/directory.
+ * 3. For directory, migrate the entries to the new MDT and update
+ * linkEA of each children. Because we can not migrate all entries
+ * in a single transaction, so the migrating directory will become
+ * a striped directory during migration, so once the process is
+ * interrupted, the directory is still accessible. (During lookup,
+ * client will locate the name by searching both original and target
+ * object).
+ * 4. Finally, update the name/FID to point to the new file/directory
+ * in a separate transaction.
+ */
+
+ /* step 1: Check whether the orphan object has been created, and create
+ * orphan object on the remote MDT if needed */
+ mdd_tobj = md2mdd_obj(tobj);
+ if (!mdd_object_exists(mdd_tobj)) {
+ rc = mdd_migrate_create(env, mdd_pobj, mdd_sobj, mdd_tobj,
+ so_attr);
+ if (rc != 0)
+ GOTO(put, rc);
+ }
+
+ /* step 2: migrate xattr */
+ rc = mdd_migrate_xattrs(env, mdd_sobj, mdd_tobj);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ /* step 3: migrate name entries to the orphan object */
+ if (S_ISDIR(lu_object_attr(&mdd_sobj->mod_obj.mo_lu))) {
+ rc = mdd_migrate_entries(env, mdd_sobj, mdd_tobj);
+ if (rc != 0)
+ GOTO(put, rc);
+ if (unlikely(OBD_FAIL_CHECK_RESET(OBD_FAIL_MIGRATE_NET_REP,
+ OBD_FAIL_MDS_REINT_NET_REP)))
+ GOTO(put, rc = 0);
+ }
+
+ /* step 4: update name entry to the new object */
+ rc = mdd_migrate_update_name(env, mdd_pobj, mdd_sobj, mdd_tobj, lname,
+ ma);
+ if (rc != 0)
+ GOTO(put, rc);
+put:
+ if (mdd_sobj)
+ mdd_object_put(env, mdd_sobj);
+
+ RETURN(rc);
+}
+
const struct md_dir_operations mdd_dir_ops = {
- .mdo_is_subdir = mdd_is_subdir,
- .mdo_lookup = mdd_lookup,
- .mdo_create = mdd_create,
- .mdo_rename = mdd_rename,
- .mdo_link = mdd_link,
- .mdo_unlink = mdd_unlink,
- .mdo_create_data = mdd_create_data,
+ .mdo_is_subdir = mdd_is_subdir,
+ .mdo_lookup = mdd_lookup,
+ .mdo_create = mdd_create,
+ .mdo_rename = mdd_rename,
+ .mdo_link = mdd_link,
+ .mdo_unlink = mdd_unlink,
+ .mdo_create_data = mdd_create_data,
+ .mdo_migrate = mdd_migrate,
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff