/**
* Delete unused orphan with FID \a lf from PENDING directory
*
* \param mdd MDD device finishing recovery
* \param lf FID of file or directory to delete
* \param key cookie for this entry in index iterator
*
* \retval 0 success
* \retval -ve error
*/
static int orph_key_test_and_del(const struct lu_env *env,
struct mdd_device *mdd,
struct lu_fid *lf,
struct dt_key *key)
{
struct mdd_object *mdo;
int rc;
mdo = mdd_object_find(env, mdd, lf);
if (IS_ERR(mdo))
return PTR_ERR(mdo);
rc = -EBUSY;
if (mdo->mod_count == 0) {
CDEBUG(D_HA, "Found orphan "DFID", delete it\n", PFID(lf));
rc = orphan_object_destroy(env, mdo, key);
if (rc) /* so replay-single.sh test_37 works */
CERROR("%s: error unlinking orphan "DFID" from "
"PENDING: rc = %d\n",
mdd2obd_dev(mdd)->obd_name, PFID(lf), rc);
} else {
mdd_write_lock(env, mdo, MOR_TGT_CHILD);
if (likely(mdo->mod_count > 0)) {
CDEBUG(D_HA, "Found orphan "DFID" count %d, skip it\n",
PFID(lf), mdo->mod_count);
mdo->mod_flags |= ORPHAN_OBJ;
}
mdd_write_unlock(env, mdo);
}
mdd_object_put(env, mdo);
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;
mdd_txn_param_build(env, mdd, MDD_TXN_UNLINK_OP);
th = mdd_trans_start(env, mdd);
if (IS_ERR(th)) {
CERROR("Cannot get thandle\n");
RETURN(-ENOMEM);
}
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)
orphan_object_kill(env, obj, mdd, th);
else
CERROR("could not delete object: rc = %d\n",rc);
mdd_orphan_write_unlock(env, mdd);
}
mdd_write_unlock(env, obj);
mdd_trans_stop(env, mdd, 0, th);
RETURN(rc);
}
static int orph_key_test_and_del(const struct lu_env *env,
struct mdd_device *mdd,
struct lu_fid *lf,
struct dt_key *key)
{
struct mdd_object *mdo;
int rc;
mdo = mdd_object_find(env, mdd, lf);
if (IS_ERR(mdo))
return PTR_ERR(mdo);
rc = -EBUSY;
if (mdo->mod_count == 0) {
CWARN("Found orphan! Delete it\n");
rc = orphan_object_destroy(env, mdo, key);
} else {
mdd_write_lock(env, mdo, MOR_TGT_CHILD);
if (likely(mdo->mod_count > 0)) {
CDEBUG(D_HA, "Found orphan, open count = %d\n",
mdo->mod_count);
mdo->mod_flags |= ORPHAN_OBJ;
}
mdd_write_unlock(env, mdo);
}
mdd_object_put(env, mdo);
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);
}
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);
}