/*
* Look-up/create a global index file.
*
* \param env - is the environment passed by the caller
* \parap dev - is the dt_device where to lookup/create the global index file
* \param parent - is the parent directory where to create the global index if
* not found
* \param fid - is the fid of the global index to be looked up/created
* \parap local - indicates whether the index should be created with a local
* generated fid or with \fid
*
* \retval - pointer to the dt_object of the global index on success,
* appropriate error on failure
*/
struct dt_object *lquota_disk_glb_find_create(const struct lu_env *env,
struct dt_device *dev,
struct dt_object *parent,
struct lu_fid *fid, bool local)
{
struct lquota_thread_info *qti = lquota_info(env);
struct dt_object *glb_idx;
const struct dt_index_features *idx_feat;
ENTRY;
CDEBUG(D_QUOTA, "look-up/create %sglobal idx file ("DFID")\n",
local ? "local " : "", PFID(fid));
idx_feat = &dt_quota_glb_features;
/* the filename is composed of the most signicant bits of the FID,
* that's to say the oid which encodes the pool id, pool type and quota
* type */
sprintf(qti->qti_buf, "0x%x", fid->f_oid);
if (local) {
/* We use the sequence reserved for local named objects */
lu_local_name_obj_fid(&qti->qti_fid, 1);
glb_idx = lquota_disk_find_create(env, dev, parent,
&qti->qti_fid, idx_feat,
qti->qti_buf);
} else {
/* look-up/create global index on disk */
glb_idx = local_index_find_or_create_with_fid(env, dev, fid,
parent,
qti->qti_buf,
LQUOTA_MODE,
idx_feat);
}
if (IS_ERR(glb_idx)) {
CERROR("%s: failed to look-up/create idx file "DFID" rc:%ld "
"local:%d\n", dev->dd_lu_dev.ld_obd->obd_name,
PFID(fid), PTR_ERR(glb_idx), local);
RETURN(glb_idx);
}
/* install index operation vector */
if (glb_idx->do_index_ops == NULL) {
int rc;
rc = glb_idx->do_ops->do_index_try(env, glb_idx, idx_feat);
if (rc) {
CERROR("%s: failed to setup index operations for "DFID
" rc:%d\n", dev->dd_lu_dev.ld_obd->obd_name,
PFID(lu_object_fid(&glb_idx->do_lu)), rc);
dt_object_put(env, glb_idx);
glb_idx = ERR_PTR(rc);
}
}
RETURN(glb_idx);
}
/*
* Look-up a slave index file. If the slave index isn't found:
* - if local is set to false, we allocate a FID from FID_SEQ_QUOTA sequence and
* create the index.
* - otherwise, we create the index file with a local reserved FID (see
* lquota_local_oid)
*
* \param env - is the environment passed by the caller
* \param dev - is the backend dt_device where to look-up/create the slave index
* \param parent - is the parent directory where to create the slave index if
* it does not exist already
* \param glb_fid - is the fid of the global index file associated with this
* slave index.
* \param uuid - is the uuid of slave which is (re)connecting to the master
* target
* \param local - indicate whether to use local reserved FID (LQUOTA_USR_OID
* & LQUOTA_GRP_OID) for the slave index creation or to
* allocate a new fid from sequence FID_SEQ_QUOTA
*
* \retval - pointer to the dt_object of the slave index on success,
* appropriate error on failure
*/
struct dt_object *lquota_disk_slv_find_create(const struct lu_env *env,
struct dt_device *dev,
struct dt_object *parent,
struct lu_fid *glb_fid,
struct obd_uuid *uuid,
bool local)
{
struct lquota_thread_info *qti = lquota_info(env);
struct dt_object *slv_idx;
int rc;
ENTRY;
LASSERT(uuid != NULL);
CDEBUG(D_QUOTA, "lookup/create slave index file for %s\n",
obd_uuid2str(uuid));
/* generate filename associated with the slave */
rc = lquota_disk_slv_filename(glb_fid, uuid, qti->qti_buf);
if (rc)
RETURN(ERR_PTR(rc));
/* Slave indexes uses the FID_SEQ_QUOTA sequence since they can be read
* through the network */
qti->qti_fid.f_seq = FID_SEQ_QUOTA;
qti->qti_fid.f_ver = 0;
if (local) {
int type;
rc = lquota_extract_fid(glb_fid, NULL, NULL, &type);
if (rc)
RETURN(ERR_PTR(rc));
/* use predefined fid in the reserved oid list */
qti->qti_fid.f_oid = (type == USRQUOTA) ? LQUOTA_USR_OID
: LQUOTA_GRP_OID;
slv_idx = local_index_find_or_create_with_fid(env, dev,
&qti->qti_fid,
parent,
qti->qti_buf,
LQUOTA_MODE,
&dt_quota_slv_features);
} else {
/* allocate fid dynamically if index does not exist already */
qti->qti_fid.f_oid = LQUOTA_GENERATED_OID;
/* lookup/create slave index file */
slv_idx = lquota_disk_find_create(env, dev, parent,
&qti->qti_fid,
&dt_quota_slv_features,
qti->qti_buf);
}
if (IS_ERR(slv_idx))
RETURN(slv_idx);
/* install index operation vector */
if (slv_idx->do_index_ops == NULL) {
rc = slv_idx->do_ops->do_index_try(env, slv_idx,
&dt_quota_slv_features);
if (rc) {
CERROR("%s: failed to setup index operations for "DFID
" rc:%d\n", dev->dd_lu_dev.ld_obd->obd_name,
PFID(lu_object_fid(&slv_idx->do_lu)), rc);
lu_object_put(env, &slv_idx->do_lu);
slv_idx = ERR_PTR(rc);
}
}
RETURN(slv_idx);
}
/*
* Look-up/create a global index file.
*
* \param env - is the environment passed by the caller
* \parap dev - is the dt_device where to lookup/create the global index file
* \param parent - is the parent directory where to create the global index if
* not found
* \param fid - is the fid of the global index to be looked up/created
* \parap local - indicates whether the index should be created with a local
* generated fid or with \fid
*
* \retval - pointer to the dt_object of the global index on success,
* appropriate error on failure
*/
struct dt_object *lquota_disk_glb_find_create(const struct lu_env *env,
struct dt_device *dev,
struct dt_object *parent,
struct lu_fid *fid, bool local)
{
struct lquota_thread_info *qti = lquota_info(env);
struct dt_object *glb_idx;
const struct dt_index_features *idx_feat;
ENTRY;
CDEBUG(D_QUOTA, "look-up/create %sglobal idx file ("DFID")\n",
local ? "local " : "", PFID(fid));
#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
/* we use different index feature for each quota type and target type
* for the time being. This is done for on-disk conversion from the old
* quota format. Once this is no longer required, we should just be
* using dt_quota_glb_features for all global index file */
idx_feat = glb_idx_feature(fid);
#else
#warning "remove old quota compatibility code"
idx_feat = &dt_quota_glb_features;
#endif
/* the filename is composed of the most signicant bits of the FID,
* that's to say the oid which encodes the pool id, pool type and quota
* type */
sprintf(qti->qti_buf, "0x%x", fid->f_oid);
if (local) {
/* We use the sequence reserved for local named objects */
lu_local_name_obj_fid(&qti->qti_fid, 1);
glb_idx = lquota_disk_find_create(env, dev, parent,
&qti->qti_fid, idx_feat,
qti->qti_buf);
} else {
/* look-up/create global index on disk */
glb_idx = local_index_find_or_create_with_fid(env, dev, fid,
parent,
qti->qti_buf,
LQUOTA_MODE,
idx_feat);
}
if (IS_ERR(glb_idx)) {
CERROR("%s: failed to look-up/create idx file "DFID" rc:%ld "
"local:%d\n", dev->dd_lu_dev.ld_obd->obd_name,
PFID(fid), PTR_ERR(glb_idx), local);
RETURN(glb_idx);
}
/* install index operation vector */
if (glb_idx->do_index_ops == NULL) {
int rc;
rc = glb_idx->do_ops->do_index_try(env, glb_idx, idx_feat);
if (rc) {
CERROR("%s: failed to setup index operations for "DFID
" rc:%d\n", dev->dd_lu_dev.ld_obd->obd_name,
PFID(lu_object_fid(&glb_idx->do_lu)), rc);
lu_object_put(env, &glb_idx->do_lu);
glb_idx = ERR_PTR(rc);
}
}
RETURN(glb_idx);
}
