int seq_store_init(struct lu_server_seq *seq,
const struct lu_env *env,
struct dt_device *dt)
{
struct dt_object *dt_obj;
struct lu_fid fid;
const char *name;
int rc;
ENTRY;
name = seq->lss_type == LUSTRE_SEQ_SERVER ?
LUSTRE_SEQ_SRV_NAME : LUSTRE_SEQ_CTL_NAME;
dt_obj = dt_store_open(env, dt, "", name, &fid);
if (!IS_ERR(dt_obj)) {
seq->lss_obj = dt_obj;
rc = 0;
} else {
CERROR("%s: Can't find \"%s\" obj %d\n",
seq->lss_name, name, (int)PTR_ERR(dt_obj));
rc = PTR_ERR(dt_obj);
}
RETURN(rc);
}
/**
* open the PENDING directory for device \a mdd
*
* The PENDING directory persistently tracks files and directories that were
* unlinked from the namespace (nlink == 0) but are still held open by clients.
* Those inodes shouldn't be deleted if the MDS crashes, because the clients
* would not be able to recover and reopen those files. Instead, these inodes
* are linked into the PENDING directory on disk, and only deleted if all
* clients close them, or the MDS finishes client recovery without any client
* reopening them (i.e. former clients didn't join recovery).
* \param d mdd device being started.
*
* \retval 0 success
* \retval -ve index operation error.
*
*/
int orph_index_init(const struct lu_env *env, struct mdd_device *mdd)
{
struct lu_fid fid;
struct dt_object *d;
int rc = 0;
ENTRY;
d = dt_store_open(env, mdd->mdd_child, "", orph_index_name, &fid);
if (!IS_ERR(d)) {
mdd->mdd_orphans = d;
if (!dt_try_as_dir(env, d)) {
rc = -ENOTDIR;
CERROR("\"%s\" is not an index! : rc = %d\n",
orph_index_name, rc);
}
} else {
CERROR("cannot find \"%s\" obj %d\n",
orph_index_name, (int)PTR_ERR(d));
rc = PTR_ERR(d);
}
RETURN(rc);
}
int fld_index_init(struct lu_server_fld *fld,
const struct lu_env *env,
struct dt_device *dt)
{
struct dt_object *dt_obj;
struct lu_fid fid;
int rc;
ENTRY;
dt_obj = dt_store_open(env, dt, "", fld_index_name, &fid);
if (!IS_ERR(dt_obj)) {
fld->lsf_obj = dt_obj;
rc = dt_obj->do_ops->do_index_try(env, dt_obj,
&fld_index_features);
if (rc == 0) {
LASSERT(dt_obj->do_index_ops != NULL);
rc = fld_insert_igif_fld(fld, env);
if (rc != 0) {
CERROR("insert igif in fld! = %d\n", rc);
lu_object_put(env, &dt_obj->do_lu);
fld->lsf_obj = NULL;
}
} else
CERROR("%s: File \"%s\" is not an index!\n",
fld->lsf_name, fld_index_name);
} else {
CERROR("%s: Can't find \"%s\" obj %d\n",
fld->lsf_name, fld_index_name, (int)PTR_ERR(dt_obj));
rc = PTR_ERR(dt_obj);
}
RETURN(rc);
}
