/**
* destroy osd object on mdd and associated ost objects.
*
* \param obj orphan object
* \param mdd used for sending llog msg to osts
*
* \retval 0 success
* \retval -ve error
*/
static int orphan_object_kill(const struct lu_env *env,
struct mdd_object *obj,
struct mdd_device *mdd,
struct thandle *th)
{
struct lu_attr *la = &mdd_env_info(env)->mti_la;
int rc = 0;
ENTRY;
/* No need to lock this object as its recovery phase, and
* no other thread can access it. But we need to lock it
* as its precondition for osd api we using. */
mdo_ref_del(env, obj, th);
if (S_ISDIR(mdd_object_type(obj))) {
mdo_ref_del(env, obj, th);
mdd_orphan_ref_del(env, mdd, th);
} else {
/* regular file , cleanup linked ost objects */
rc = mdd_la_get(env, obj, la, BYPASS_CAPA);
if (rc == 0)
rc = mdd_lov_destroy(env, mdd, obj, la);
}
RETURN(rc);
}
static int orphan_object_destroy(const struct lu_env *env,
struct mdd_object *obj,
struct dt_key *key)
{
struct thandle *th = NULL;
struct mdd_device *mdd = mdo2mdd(&obj->mod_obj);
int rc = 0;
ENTRY;
th = mdd_trans_create(env, mdd);
if (IS_ERR(th)) {
CERROR("Cannot get thandle\n");
RETURN(PTR_ERR(th));
}
rc = orph_declare_index_delete(env, obj, th);
if (rc)
GOTO(stop, rc);
rc = mdo_declare_destroy(env, obj, th);
if (rc)
GOTO(stop, rc);
rc = mdd_trans_start(env, mdd, th);
if (rc)
GOTO(stop, rc);
mdd_write_lock(env, obj, MOR_TGT_CHILD);
if (likely(obj->mod_count == 0)) {
mdd_orphan_write_lock(env, mdd);
rc = mdd_orphan_delete_obj(env, mdd, key, th);
if (rc == 0) {
mdo_ref_del(env, obj, th);
if (S_ISDIR(mdd_object_type(obj))) {
mdo_ref_del(env, obj, th);
mdd_orphan_ref_del(env, mdd, th);
}
rc = mdo_destroy(env, obj, th);
} else
CERROR("could not delete object: rc = %d\n", rc);
mdd_orphan_write_unlock(env, mdd);
}
mdd_write_unlock(env, obj);
stop:
rc = mdd_trans_stop(env, mdd, 0, th);
RETURN(rc);
}
/**
* delete an orphan \a obj from orphan index.
* \param obj file or directory.
* \param th transaction for index deletion and object destruction.
*
* \pre obj->mod_count == 0 && ORPHAN_OBJ is set for obj.
*
* \retval 0 success
* \retval -ve index operation error.
*/
int mdd_orphan_delete(const struct lu_env *env, struct mdd_object *obj,
struct thandle *th)
{
struct mdd_device *mdd = mdo2mdd(&obj->mod_obj);
struct dt_object *dor = mdd->mdd_orphans;
struct dt_key *key;
int rc = 0;
ENTRY;
LASSERT(mdd_write_locked(env, obj) != 0);
LASSERT(obj->mod_flags & ORPHAN_OBJ);
LASSERT(obj->mod_count == 0);
LASSERT(dor);
key = mdd_orphan_key_fill(env, mdo2fid(obj));
dt_write_lock(env, mdd->mdd_orphans, MOR_TGT_ORPHAN);
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_ORPHAN_DELETE))
goto ref_del;
rc = dt_delete(env, mdd->mdd_orphans, key, th);
if (rc == -ENOENT) {
key = mdd_orphan_key_fill_20(env, mdo2fid(obj));
rc = dt_delete(env, mdd->mdd_orphans, key, th);
}
ref_del:
if (!rc) {
/* lov objects will be destroyed by caller */
mdo_ref_del(env, obj, th);
if (S_ISDIR(mdd_object_type(obj))) {
mdo_ref_del(env, obj, th);
dt_ref_del(env, mdd->mdd_orphans, th);
}
obj->mod_flags &= ~ORPHAN_OBJ;
} else {
CERROR("%s: could not delete orphan object "DFID": rc = %d\n",
mdd2obd_dev(mdd)->obd_name, PFID(mdo2fid(obj)), rc);
}
dt_write_unlock(env, mdd->mdd_orphans);
RETURN(rc);
}
static int orph_index_delete(const struct lu_env *env,
struct mdd_object *obj,
__u32 op,
struct thandle *th)
{
struct mdd_device *mdd = mdo2mdd(&obj->mod_obj);
struct dt_object *dor = mdd->mdd_orphans;
struct dt_key *key;
int rc;
ENTRY;
LASSERT(mdd_write_locked(env, obj) != 0);
LASSERT(obj->mod_flags & ORPHAN_OBJ);
LASSERT(obj->mod_count == 0);
LASSERT(dor);
key = orph_key_fill(env, mdo2fid(obj), op);
mdd_orphan_write_lock(env, mdd);
rc = mdd_orphan_delete_obj(env, mdd, key, th);
if (rc == -ENOENT) {
key = orph_key_fill_18(env, mdo2fid(obj));
rc = mdd_orphan_delete_obj(env, mdd, key, th);
}
if (!rc) {
/* lov objects will be destroyed by caller */
mdo_ref_del(env, obj, th);
if (S_ISDIR(mdd_object_type(obj))) {
mdo_ref_del(env, obj, th);
mdd_orphan_ref_del(env, mdd, th);
}
obj->mod_flags &= ~ORPHAN_OBJ;
} else {
CERROR("could not delete object: rc = %d\n",rc);
}
mdd_orphan_write_unlock(env, mdd);
RETURN(rc);
}
static int mdd_orphan_destroy(const struct lu_env *env, struct mdd_object *obj,
struct dt_key *key)
{
struct thandle *th = NULL;
struct mdd_device *mdd = mdo2mdd(&obj->mod_obj);
bool orphan_exists = true;
int rc = 0;
ENTRY;
th = mdd_trans_create(env, mdd);
if (IS_ERR(th)) {
rc = PTR_ERR(th);
if (rc != -EINPROGRESS)
CERROR("%s: cannot get orphan thandle: rc = %d\n",
mdd2obd_dev(mdd)->obd_name, rc);
RETURN(rc);
}
mdd_write_lock(env, obj, MOR_TGT_CHILD);
rc = mdd_orphan_declare_delete(env, obj, th);
if (rc == -ENOENT)
orphan_exists = false;
else if (rc)
GOTO(unlock, rc);
if (orphan_exists) {
rc = mdo_declare_destroy(env, obj, th);
if (rc)
GOTO(unlock, rc);
}
rc = mdd_trans_start(env, mdd, th);
if (rc)
GOTO(unlock, rc);
if (likely(obj->mod_count == 0)) {
dt_write_lock(env, mdd->mdd_orphans, MOR_TGT_ORPHAN);
rc = dt_delete(env, mdd->mdd_orphans, key, th);
if (rc) {
CERROR("%s: could not delete orphan "DFID": rc = %d\n",
mdd2obd_dev(mdd)->obd_name, PFID(mdo2fid(obj)),
rc);
} else if (orphan_exists) {
mdo_ref_del(env, obj, th);
if (S_ISDIR(mdd_object_type(obj))) {
mdo_ref_del(env, obj, th);
dt_ref_del(env, mdd->mdd_orphans, th);
}
rc = mdo_destroy(env, obj, th);
} else {
CWARN("%s: orphan %s "DFID" doesn't exist\n",
mdd2obd_dev(mdd)->obd_name, (char *)key,
PFID(mdo2fid(obj)));
}
dt_write_unlock(env, mdd->mdd_orphans);
}
unlock:
mdd_write_unlock(env, obj);
rc = mdd_trans_stop(env, mdd, 0, th);
RETURN(rc);
}
