/**
* This is helper function to get llog directory object. It is used by named
* llog operations to find/insert/delete llog entry from llog directory.
*
* \param[in] env execution environment
* \param[in] ctxt llog context
*
* \retval dt_object of llog directory
* \retval ERR_PTR of negative value on error
*/
struct dt_object *llog_osd_dir_get(const struct lu_env *env,
struct llog_ctxt *ctxt)
{
struct dt_device *dt;
struct dt_thread_info *dti = dt_info(env);
struct dt_object *dir;
int rc;
dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt;
if (ctxt->loc_dir == NULL) {
rc = dt_root_get(env, dt, &dti->dti_fid);
if (rc)
return ERR_PTR(rc);
dir = dt_locate(env, dt, &dti->dti_fid);
if (!IS_ERR(dir) && !dt_try_as_dir(env, dir)) {
lu_object_put(env, &dir->do_lu);
return ERR_PTR(-ENOTDIR);
}
} else {
lu_object_get(&ctxt->loc_dir->do_lu);
dir = ctxt->loc_dir;
}
return dir;
}
static int mdd_prepare(const struct lu_env *env,
struct lu_device *pdev,
struct lu_device *cdev)
{
struct mdd_device *mdd = lu2mdd_dev(cdev);
struct lu_device *next = &mdd->mdd_child->dd_lu_dev;
struct lu_fid fid;
int rc;
ENTRY;
rc = next->ld_ops->ldo_prepare(env, cdev, next);
if (rc)
RETURN(rc);
/* Setup local dirs */
fid.f_seq = FID_SEQ_LOCAL_NAME;
fid.f_oid = 1;
fid.f_ver = 0;
rc = local_oid_storage_init(env, mdd->mdd_bottom, &fid,
&mdd->mdd_los);
if (rc)
RETURN(rc);
rc = dt_root_get(env, mdd->mdd_child, &mdd->mdd_local_root_fid);
if (rc < 0)
GOTO(out_los, rc);
lu_root_fid(&fid);
if (mdd_seq_site(mdd)->ss_node_id == 0) {
rc = mdd_local_file_create(env, mdd, &mdd->mdd_local_root_fid,
mdd_root_dir_name, S_IFDIR |
S_IRUGO | S_IWUSR | S_IXUGO, &fid);
if (rc != 0) {
CERROR("%s: create root fid failed: rc = %d\n",
mdd2obd_dev(mdd)->obd_name, rc);
GOTO(out_los, rc);
}
mdd->mdd_root_fid = fid;
rc = mdd_dot_lustre_setup(env, mdd);
if (rc != 0) {
CERROR("%s: initializing .lustre failed: rc = %d\n",
mdd2obd_dev(mdd)->obd_name, rc);
GOTO(out_los, rc);
}
rc = mdd_compat_fixes(env, mdd);
if (rc != 0)
GOTO(out_dot, rc);
} else {
/* Normal client usually send root access to MDT0 directly,
* the root FID on non-MDT0 will only be used by echo client. */
mdd->mdd_root_fid = fid;
}
rc = orph_index_init(env, mdd);
if (rc < 0)
GOTO(out_dot, rc);
rc = mdd_changelog_init(env, mdd);
if (rc != 0) {
CERROR("%s: failed to initialize changelog: rc = %d\n",
mdd2obd_dev(mdd)->obd_name, rc);
GOTO(out_orph, rc);
}
rc = mdd_hsm_actions_llog_init(env, mdd);
if (rc != 0)
GOTO(out_changelog, rc);
rc = lfsck_register(env, mdd->mdd_bottom, mdd->mdd_child,
mdd2obd_dev(mdd), mdd_lfsck_out_notify,
mdd, true);
if (rc != 0) {
CERROR("%s: failed to initialize lfsck: rc = %d\n",
mdd2obd_dev(mdd)->obd_name, rc);
GOTO(out_hsm, rc);
}
RETURN(0);
out_hsm:
mdd_hsm_actions_llog_fini(env, mdd);
out_changelog:
mdd_changelog_fini(env, mdd);
out_orph:
orph_index_fini(env, mdd);
out_dot:
if (mdd_seq_site(mdd)->ss_node_id == 0)
mdd_dot_lustre_cleanup(env, mdd);
out_los:
local_oid_storage_fini(env, mdd->mdd_los);
mdd->mdd_los = NULL;
return rc;
}
/*
* Set up quota directory (either "quota_master" or "quota_slave") for a QMT or
* QSD instance. This function is also used to create per-pool directory on
* the quota master.
* The directory is created with a local sequence if it does not exist already.
* This function is called at ->ldo_prepare time when the full device stack is
* configured.
*
* \param env - is the environment passed by the caller
* \param dev - is the dt_device where to create the quota directory
* \param parent - is the parent directory. If not specified, the directory
* will be created under the root directory
* \param name - is the name of quota directory to be created
*
* \retval - pointer to quota root dt_object on success, appropriate error
* on failure
*/
struct dt_object *lquota_disk_dir_find_create(const struct lu_env *env,
struct dt_device *dev,
struct dt_object *parent,
const char *name)
{
struct lquota_thread_info *qti = lquota_info(env);
struct dt_object *qt_dir = NULL;
struct local_oid_storage *los = NULL;
int rc;
ENTRY;
/* Set up local storage to create the quota directory.
* We use the sequence reserved for local named objects */
lu_local_name_obj_fid(&qti->qti_fid, 1);
rc = local_oid_storage_init(env, dev, &qti->qti_fid, &los);
if (rc)
RETURN(ERR_PTR(rc));
if (parent == NULL) {
/* Fetch dt object associated with root directory */
rc = dt_root_get(env, dev, &qti->qti_fid);
if (rc)
GOTO(out, rc);
parent = dt_locate_at(env, dev, &qti->qti_fid,
dev->dd_lu_dev.ld_site->ls_top_dev, NULL);
if (IS_ERR(parent))
GOTO(out, rc = PTR_ERR(parent));
} else {
lu_object_get(&parent->do_lu);
}
/* create quota directory to be used for all quota index files */
qt_dir = local_file_find_or_create(env, los, parent, name, S_IFDIR |
S_IRUGO | S_IWUSR | S_IXUGO);
if (IS_ERR(qt_dir))
GOTO(out, rc = PTR_ERR(qt_dir));
/* local_oid_storage_fini() will finalize the local storage device,
* we have to open the object in another device stack */
qti->qti_fid = qt_dir->do_lu.lo_header->loh_fid;
lu_object_put_nocache(env, &qt_dir->do_lu);
qt_dir = dt_locate(env, dev, &qti->qti_fid);
if (IS_ERR(qt_dir))
GOTO(out, rc = PTR_ERR(qt_dir));
if (!dt_try_as_dir(env, qt_dir))
GOTO(out, rc = -ENOTDIR);
EXIT;
out:
if (parent != NULL && !IS_ERR(parent))
lu_object_put(env, &parent->do_lu);
if (los != NULL)
local_oid_storage_fini(env, los);
if (rc) {
if (qt_dir != NULL && !IS_ERR(qt_dir))
lu_object_put(env, &qt_dir->do_lu);
qt_dir = ERR_PTR(rc);
}
return qt_dir;
}
