/* type constructor/destructor: lov_type_{init,fini,start,stop}() */
LU_TYPE_INIT_FINI(lov, &lov_key, &lov_session_key);
+
+static int lov_mdc_dev_init(const struct lu_env *env, struct lov_device *ld,
+ struct lu_device *mdc_dev, __u32 idx, __u32 nr)
+{
+ struct cl_device *cl;
+
+ ENTRY;
+ cl = cl_type_setup(env, &ld->ld_site, &lovsub_device_type,
+ mdc_dev);
+ if (IS_ERR(cl))
+ RETURN(PTR_ERR(cl));
+
+ ld->ld_md_tgts[nr].ldm_mdc = cl;
+ ld->ld_md_tgts[nr].ldm_idx = idx;
+ RETURN(0);
+}
+
static struct lu_device *lov_device_fini(const struct lu_env *env,
- struct lu_device *d)
+ struct lu_device *d)
{
- int i;
- struct lov_device *ld = lu2lov_dev(d);
+ struct lov_device *ld = lu2lov_dev(d);
+ int i;
- LASSERT(ld->ld_lov != NULL);
- if (ld->ld_target == NULL)
- RETURN(NULL);
+ LASSERT(ld->ld_lov != NULL);
- lov_foreach_target(ld, i) {
- struct lovsub_device *lsd;
+ if (ld->ld_lmv != NULL) {
+ class_decref(ld->ld_lmv, "lov", d);
+ ld->ld_lmv = NULL;
+ }
- lsd = ld->ld_target[i];
- if (lsd != NULL) {
- cl_stack_fini(env, lovsub2cl_dev(lsd));
- ld->ld_target[i] = NULL;
- }
- }
- RETURN(NULL);
+ if (ld->ld_md_tgts != NULL) {
+ for (i = 0; i < ld->ld_md_tgts_nr; i++) {
+ if (ld->ld_md_tgts[i].ldm_mdc == NULL)
+ continue;
+
+ cl_stack_fini(env, ld->ld_md_tgts[i].ldm_mdc);
+ ld->ld_md_tgts[i].ldm_mdc = NULL;
+ ld->ld_lov->lov_mdc_tgts[i].lmtd_mdc = NULL;
+ }
+ }
+
+ if (ld->ld_target != NULL) {
+ lov_foreach_target(ld, i) {
+ struct lovsub_device *lsd;
+
+ lsd = ld->ld_target[i];
+ if (lsd != NULL) {
+ cl_stack_fini(env, lovsub2cl_dev(lsd));
+ ld->ld_target[i] = NULL;
+ }
+ }
+ }
+ RETURN(NULL);
}
static int lov_device_init(const struct lu_env *env, struct lu_device *d,
const char *name, struct lu_device *next)
{
- struct lov_device *ld = lu2lov_dev(d);
- int i;
- int rc = 0;
-
- LASSERT(d->ld_site != NULL);
- if (ld->ld_target == NULL)
- RETURN(rc);
-
- lov_foreach_target(ld, i) {
- struct lovsub_device *lsd;
- struct cl_device *cl;
- struct lov_tgt_desc *desc;
-
- desc = ld->ld_lov->lov_tgts[i];
- if (desc == NULL)
- continue;
-
- cl = cl_type_setup(env, d->ld_site, &lovsub_device_type,
- desc->ltd_obd->obd_lu_dev);
- if (IS_ERR(cl)) {
- rc = PTR_ERR(cl);
- break;
- }
- lsd = cl2lovsub_dev(cl);
- ld->ld_target[i] = lsd;
- }
+ struct lov_device *ld = lu2lov_dev(d);
+ int i;
+ int rc = 0;
+
+ /* check all added already MDC subdevices and initialize them */
+ for (i = 0; i < ld->ld_md_tgts_nr; i++) {
+ struct obd_device *mdc;
+ __u32 idx;
+
+ mdc = ld->ld_lov->lov_mdc_tgts[i].lmtd_mdc;
+ idx = ld->ld_lov->lov_mdc_tgts[i].lmtd_index;
+
+ if (mdc == NULL)
+ continue;
+
+ rc = lov_mdc_dev_init(env, ld, mdc->obd_lu_dev, idx, i);
+ if (rc) {
+ CERROR("%s: failed to add MDC %s as target: rc = %d\n",
+ d->ld_obd->obd_name,
+ obd_uuid2str(&mdc->obd_uuid), rc);
+ GOTO(out_err, rc);
+ }
+ }
- if (rc)
- lov_device_fini(env, d);
- else
- ld->ld_flags |= LOV_DEV_INITIALIZED;
+ if (ld->ld_target == NULL)
+ RETURN(0);
- RETURN(rc);
+ lov_foreach_target(ld, i) {
+ struct lovsub_device *lsd;
+ struct cl_device *cl;
+ struct lov_tgt_desc *desc;
+
+ desc = ld->ld_lov->lov_tgts[i];
+ if (desc == NULL)
+ continue;
+
+ cl = cl_type_setup(env, &ld->ld_site, &lovsub_device_type,
+ desc->ltd_obd->obd_lu_dev);
+ if (IS_ERR(cl))
+ GOTO(out_err, rc = PTR_ERR(cl));
+
+ lsd = cl2lovsub_dev(cl);
+ ld->ld_target[i] = lsd;
+ }
+ ld->ld_flags |= LOV_DEV_INITIALIZED;
+ RETURN(0);
+
+out_err:
+ lu_device_fini(d);
+ RETURN(rc);
}
/* Free the lov specific data created for the back end lu_device. */
struct lov_device *ld = lu2lov_dev(d);
const int nr = ld->ld_target_nr;
+ lu_site_fini(&ld->ld_site);
+
cl_device_fini(lu2cl_dev(d));
- if (ld->ld_target != NULL)
+ if (ld->ld_target) {
OBD_FREE(ld->ld_target, nr * sizeof ld->ld_target[0]);
+ ld->ld_target = NULL;
+ }
+ if (ld->ld_md_tgts) {
+ OBD_FREE(ld->ld_md_tgts,
+ sizeof(*ld->ld_md_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_md_tgts = NULL;
+ }
+ /* free array of MDCs */
+ if (ld->ld_lov->lov_mdc_tgts) {
+ OBD_FREE(ld->ld_lov->lov_mdc_tgts,
+ sizeof(*ld->ld_lov->lov_mdc_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_lov->lov_mdc_tgts = NULL;
+ }
OBD_FREE_PTR(ld);
return NULL;
RETURN(-EINVAL);
}
- rc = lov_expand_targets(env, ld);
- if (rc == 0 && ld->ld_flags & LOV_DEV_INITIALIZED) {
- LASSERT(dev->ld_site != NULL);
-
- cl = cl_type_setup(env, dev->ld_site, &lovsub_device_type,
+ rc = lov_expand_targets(env, ld);
+ if (rc == 0 && ld->ld_flags & LOV_DEV_INITIALIZED) {
+ cl = cl_type_setup(env, &ld->ld_site, &lovsub_device_type,
tgt->ltd_obd->obd_lu_dev);
if (!IS_ERR(cl)) {
lsd = cl2lovsub_dev(cl);
RETURN(rc);
}
-static int lov_process_config(const struct lu_env *env,
- struct lu_device *d, struct lustre_cfg *cfg)
+/**
+ * Add new MDC target device in LOV.
+ *
+ * This function is part of the configuration log processing. It adds new MDC
+ * device to the MDC device array indexed by their indexes.
+ *
+ * \param[in] env execution environment
+ * \param[in] d LU device of LOV device
+ * \param[in] mdc MDC device to add
+ * \param[in] idx MDC device index
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int lov_add_mdc_target(const struct lu_env *env, struct lu_device *d,
+ struct obd_device *mdc, __u32 idx)
{
- struct obd_device *obd = d->ld_obd;
- int cmd;
- int rc;
- int gen;
- __u32 index;
+ struct lov_device *ld = lu2lov_dev(d);
+ struct obd_device *lov_obd = d->ld_obd;
+ struct obd_device *lmv_obd;
+ int next;
+ int rc = 0;
- obd_getref(obd);
+ ENTRY;
- cmd = cfg->lcfg_command;
- rc = lov_process_config_base(d->ld_obd, cfg, &index, &gen);
- if (rc == 0) {
- switch(cmd) {
- case LCFG_LOV_ADD_OBD:
- case LCFG_LOV_ADD_INA:
- rc = lov_cl_add_target(env, d, index);
- if (rc != 0)
- lov_del_target(d->ld_obd, index, NULL, 0);
- break;
- case LCFG_LOV_DEL_OBD:
- lov_cl_del_target(env, d, index);
- break;
- }
- }
- obd_putref(obd);
- RETURN(rc);
+ LASSERT(mdc != NULL);
+ if (ld->ld_md_tgts_nr == LOV_MDC_TGT_MAX) {
+ /* If the maximum value of LOV_MDC_TGT_MAX will become too
+ * small then all MD target handling must be rewritten in LOD
+ * manner, check lod_add_device() and related functionality.
+ */
+ CERROR("%s: cannot serve more than %d MDC devices\n",
+ lov_obd->obd_name, LOV_MDC_TGT_MAX);
+ RETURN(-ERANGE);
+ }
+
+ /* grab FLD from lmv, do that here, when first MDC is added
+ * to be sure LMV is set up and can be found */
+ if (ld->ld_lmv == NULL) {
+ next = 0;
+ while ((lmv_obd = class_devices_in_group(&lov_obd->obd_uuid,
+ &next)) != NULL) {
+ if ((strncmp(lmv_obd->obd_type->typ_name,
+ LUSTRE_LMV_NAME,
+ strlen(LUSTRE_LMV_NAME)) == 0))
+ break;
+ }
+ if (lmv_obd == NULL) {
+ CERROR("%s: cannot find LMV OBD by UUID (%s)\n",
+ lov_obd->obd_name,
+ obd_uuid2str(&lmv_obd->obd_uuid));
+ RETURN(-ENODEV);
+ }
+ spin_lock(&lmv_obd->obd_dev_lock);
+ class_incref(lmv_obd, "lov", ld);
+ spin_unlock(&lmv_obd->obd_dev_lock);
+ ld->ld_lmv = lmv_obd;
+ }
+
+ LASSERT(lov_obd->u.lov.lov_mdc_tgts[ld->ld_md_tgts_nr].lmtd_mdc ==
+ NULL);
+
+ if (ld->ld_flags & LOV_DEV_INITIALIZED) {
+ rc = lov_mdc_dev_init(env, ld, mdc->obd_lu_dev, idx,
+ ld->ld_md_tgts_nr);
+ if (rc) {
+ CERROR("%s: failed to add MDC %s as target: rc = %d\n",
+ lov_obd->obd_name, obd_uuid2str(&mdc->obd_uuid),
+ rc);
+ RETURN(rc);
+ }
+ }
+
+ lov_obd->u.lov.lov_mdc_tgts[ld->ld_md_tgts_nr].lmtd_mdc = mdc;
+ lov_obd->u.lov.lov_mdc_tgts[ld->ld_md_tgts_nr].lmtd_index = idx;
+ ld->ld_md_tgts_nr++;
+
+ RETURN(rc);
+}
+
+static int lov_process_config(const struct lu_env *env,
+ struct lu_device *d, struct lustre_cfg *cfg)
+{
+ struct obd_device *obd = d->ld_obd;
+ int cmd;
+ int rc;
+ int gen;
+ __u32 index;
+
+ obd_getref(obd);
+
+ cmd = cfg->lcfg_command;
+
+ rc = lov_process_config_base(d->ld_obd, cfg, &index, &gen);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ switch (cmd) {
+ case LCFG_LOV_ADD_OBD:
+ case LCFG_LOV_ADD_INA:
+ rc = lov_cl_add_target(env, d, index);
+ if (rc != 0)
+ lov_del_target(d->ld_obd, index, NULL, 0);
+ break;
+ case LCFG_LOV_DEL_OBD:
+ lov_cl_del_target(env, d, index);
+ break;
+ case LCFG_ADD_MDC:
+ {
+ struct obd_device *mdc;
+ struct obd_uuid tgt_uuid;
+
+ /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
+ * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
+ if (LUSTRE_CFG_BUFLEN(cfg, 1) > sizeof(tgt_uuid.uuid))
+ GOTO(out, rc = -EINVAL);
+
+ obd_str2uuid(&tgt_uuid, lustre_cfg_buf(cfg, 1));
+
+ if (sscanf(lustre_cfg_buf(cfg, 2), "%d", &index) != 1)
+ GOTO(out, rc = -EINVAL);
+
+ mdc = class_find_client_obd(&tgt_uuid, LUSTRE_MDC_NAME,
+ &obd->obd_uuid);
+ if (mdc == NULL)
+ GOTO(out, rc = -ENODEV);
+ rc = lov_add_mdc_target(env, d, mdc, index);
+ break;
+ }
+ }
+out:
+ obd_putref(obd);
+ RETURN(rc);
}
static const struct lu_device_operations lov_lu_ops = {
obd = class_name2obd(lustre_cfg_string(cfg, 0));
LASSERT(obd != NULL);
rc = lov_setup(obd, cfg);
- if (rc) {
- lov_device_free(env, d);
- RETURN(ERR_PTR(rc));
- }
+ if (rc)
+ GOTO(out, rc);
+
+ /* Alloc MDC devices array */
+ /* XXX: need dynamic allocation at some moment */
+ OBD_ALLOC(ld->ld_md_tgts, sizeof(*ld->ld_md_tgts) * LOV_MDC_TGT_MAX);
+ if (ld->ld_md_tgts == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ ld->ld_md_tgts_nr = 0;
+
+ ld->ld_lov = &obd->u.lov;
+ OBD_ALLOC(ld->ld_lov->lov_mdc_tgts,
+ sizeof(*ld->ld_lov->lov_mdc_tgts) * LOV_MDC_TGT_MAX);
+ if (ld->ld_lov->lov_mdc_tgts == NULL)
+ GOTO(out_md_tgts, rc = -ENOMEM);
+
+ rc = lu_site_init(&ld->ld_site, d);
+ if (rc != 0)
+ GOTO(out_mdc_tgts, rc);
+
+ rc = lu_site_init_finish(&ld->ld_site);
+ if (rc != 0)
+ GOTO(out_site, rc);
+
+ RETURN(d);
+out_site:
+ lu_site_fini(&ld->ld_site);
+out_mdc_tgts:
+ OBD_FREE(ld->ld_lov->lov_mdc_tgts,
+ sizeof(*ld->ld_lov->lov_mdc_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_lov->lov_mdc_tgts = NULL;
+out_md_tgts:
+ OBD_FREE(ld->ld_md_tgts, sizeof(*ld->ld_md_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_md_tgts = NULL;
+out:
+ OBD_FREE_PTR(ld);
- ld->ld_lov = &obd->u.lov;
- RETURN(d);
+ return ERR_PTR(rc);
}
static const struct lu_device_type_operations lov_device_type_ops = {
* Lov object layout operations.
*
*/
-static int lov_init_empty(const struct lu_env *env, struct lov_device *dev,
- struct lov_object *lov, struct lov_stripe_md *lsm,
- const struct cl_object_conf *conf,
- union lov_layout_state *state)
+
+static struct cl_object *lov_sub_find(const struct lu_env *env,
+ struct cl_device *dev,
+ const struct lu_fid *fid,
+ const struct cl_object_conf *conf)
{
- return 0;
+ struct lu_object *o;
+
+ ENTRY;
+
+ o = lu_object_find_at(env, cl2lu_dev(dev), fid, &conf->coc_lu);
+ LASSERT(ergo(!IS_ERR(o), o->lo_dev->ld_type == &lovsub_device_type));
+ RETURN(lu2cl(o));
}
-static struct cl_object *lov_sub_find(const struct lu_env *env,
- struct cl_device *dev,
- const struct lu_fid *fid,
- const struct cl_object_conf *conf)
+static int lov_page_slice_fixup(struct lov_object *lov,
+ struct cl_object *stripe)
{
- struct lu_object *o;
+ struct cl_object_header *hdr = cl_object_header(&lov->lo_cl);
+ struct cl_object *o;
- ENTRY;
- o = lu_object_find_at(env, cl2lu_dev(dev), fid, &conf->coc_lu);
- LASSERT(ergo(!IS_ERR(o), o->lo_dev->ld_type == &lovsub_device_type));
- RETURN(lu2cl(o));
+ if (stripe == NULL)
+ return hdr->coh_page_bufsize - lov->lo_cl.co_slice_off -
+ cfs_size_round(sizeof(struct lov_page));
+
+ cl_object_for_each(o, stripe)
+ o->co_slice_off += hdr->coh_page_bufsize;
+
+ return cl_object_header(stripe)->coh_page_bufsize;
}
static int lov_init_sub(const struct lu_env *env, struct lov_object *lov,
- struct cl_object *subobj, struct lov_layout_raid0 *r0,
- struct lov_oinfo *oinfo, int idx)
+ struct cl_object *subobj, struct lov_oinfo *oinfo,
+ int idx)
{
struct cl_object_header *hdr;
struct cl_object_header *subhdr;
return -EIO;
}
- hdr = cl_object_header(lov2cl(lov));
+ hdr = cl_object_header(lov2cl(lov));
subhdr = cl_object_header(subobj);
CDEBUG(D_INODE, DFID"@%p[%d:%d] -> "DFID"@%p: ostid: "DOSTID
spin_lock(&subhdr->coh_attr_guard);
parent = subhdr->coh_parent;
if (parent == NULL) {
+ struct lovsub_object *lso = cl2lovsub(subobj);
+
subhdr->coh_parent = hdr;
spin_unlock(&subhdr->coh_attr_guard);
subhdr->coh_nesting = hdr->coh_nesting + 1;
lu_object_ref_add(&subobj->co_lu, "lov-parent", lov);
- r0->lo_sub[stripe] = cl2lovsub(subobj);
- r0->lo_sub[stripe]->lso_super = lov;
- r0->lo_sub[stripe]->lso_index = idx;
+ lso->lso_super = lov;
+ lso->lso_index = idx;
result = 0;
} else {
struct lu_object *old_obj;
return result;
}
-static int lov_page_slice_fixup(struct lov_object *lov,
- struct cl_object *stripe)
-{
- struct cl_object_header *hdr = cl_object_header(&lov->lo_cl);
- struct cl_object *o;
-
- if (stripe == NULL)
- return hdr->coh_page_bufsize - lov->lo_cl.co_slice_off -
- cfs_size_round(sizeof(struct lov_page));
-
- cl_object_for_each(o, stripe)
- o->co_slice_off += hdr->coh_page_bufsize;
-
- return cl_object_header(stripe)->coh_page_bufsize;
-}
-
static int lov_init_raid0(const struct lu_env *env, struct lov_device *dev,
- struct lov_object *lov, int index,
- struct lov_layout_raid0 *r0)
+ struct lov_object *lov, unsigned int index,
+ const struct cl_object_conf *conf,
+ struct lov_layout_entry *lle)
{
- struct lov_thread_info *lti = lov_env_info(env);
- struct cl_object_conf *subconf = <i->lti_stripe_conf;
- struct lu_fid *ofid = <i->lti_fid;
- struct cl_object *stripe;
+ struct lov_layout_raid0 *r0 = &lle->lle_raid0;
+ struct lov_thread_info *lti = lov_env_info(env);
+ struct cl_object_conf *subconf = <i->lti_stripe_conf;
+ struct lu_fid *ofid = <i->lti_fid;
+ struct cl_object *stripe;
struct lov_stripe_md_entry *lse = lov_lse(lov, index);
int result;
- int psz;
+ int psz, sz;
int i;
ENTRY;
if (IS_ERR(stripe))
GOTO(out, result = PTR_ERR(stripe));
- result = lov_init_sub(env, lov, stripe, r0, oinfo,
+ result = lov_init_sub(env, lov, stripe, oinfo,
lov_comp_index(index, i));
if (result == -EAGAIN) { /* try again */
--i;
}
if (result == 0) {
- int sz = lov_page_slice_fixup(lov, stripe);
+ r0->lo_sub[i] = cl2lovsub(stripe);
+
+ sz = lov_page_slice_fixup(lov, stripe);
LASSERT(ergo(psz > 0, psz == sz));
psz = sz;
}
RETURN(result);
}
-static int lov_init_composite(const struct lu_env *env, struct lov_device *dev,
- struct lov_object *lov, struct lov_stripe_md *lsm,
- const struct cl_object_conf *conf,
- union lov_layout_state *state)
-{
- struct lov_layout_composite *comp = &state->composite;
- unsigned int entry_count;
- unsigned int psz = 0;
- int result = 0;
- int i;
-
- ENTRY;
-
- LASSERT(lsm->lsm_entry_count > 0);
- LASSERT(lov->lo_lsm == NULL);
- lov->lo_lsm = lsm_addref(lsm);
- lov->lo_layout_invalid = true;
-
- entry_count = lsm->lsm_entry_count;
- comp->lo_entry_count = entry_count;
-
- OBD_ALLOC(comp->lo_entries, entry_count * sizeof(*comp->lo_entries));
- if (comp->lo_entries == NULL)
- RETURN(-ENOMEM);
-
- for (i = 0; i < entry_count; i++) {
- struct lov_layout_entry *le = &comp->lo_entries[i];
-
- le->lle_extent = lsm->lsm_entries[i]->lsme_extent;
- /**
- * If the component has not been init-ed on MDS side, for
- * PFL layout, we'd know that the components beyond this one
- * will be dynamically init-ed later on file write/trunc ops.
- */
- if (!lsm_entry_inited(lsm, i))
- continue;
-
- result = lov_init_raid0(env, dev, lov, i, &le->lle_raid0);
- if (result < 0)
- break;
-
- LASSERT(ergo(psz > 0, psz == result));
- psz = result;
- }
- if (psz > 0)
- cl_object_header(&lov->lo_cl)->coh_page_bufsize += psz;
-
- return result > 0 ? 0 : result;
-}
-
-static int lov_init_released(const struct lu_env *env,
- struct lov_device *dev, struct lov_object *lov,
- struct lov_stripe_md *lsm,
- const struct cl_object_conf *conf,
- union lov_layout_state *state)
-{
- LASSERT(lsm != NULL);
- LASSERT(lsm->lsm_is_released);
- LASSERT(lov->lo_lsm == NULL);
-
- lov->lo_lsm = lsm_addref(lsm);
- return 0;
-}
-
-static struct cl_object *lov_find_subobj(const struct lu_env *env,
- struct lov_object *lov,
- struct lov_stripe_md *lsm,
- int index)
-{
- struct lov_device *dev = lu2lov_dev(lov2lu(lov)->lo_dev);
- struct lov_thread_info *lti = lov_env_info(env);
- struct lu_fid *ofid = <i->lti_fid;
- struct lov_oinfo *oinfo;
- struct cl_device *subdev;
- int entry = lov_comp_entry(index);
- int stripe = lov_comp_stripe(index);
- int ost_idx;
- int rc;
- struct cl_object *result;
-
- if (lov->lo_type != LLT_COMP)
- GOTO(out, result = NULL);
-
- if (entry >= lsm->lsm_entry_count ||
- stripe >= lsm->lsm_entries[entry]->lsme_stripe_count)
- GOTO(out, result = NULL);
-
- oinfo = lsm->lsm_entries[entry]->lsme_oinfo[stripe];
- ost_idx = oinfo->loi_ost_idx;
- rc = ostid_to_fid(ofid, &oinfo->loi_oi, ost_idx);
- if (rc != 0)
- GOTO(out, result = NULL);
-
- subdev = lovsub2cl_dev(dev->ld_target[ost_idx]);
- result = lov_sub_find(env, subdev, ofid, NULL);
-out:
- if (result == NULL)
- result = ERR_PTR(-EINVAL);
- return result;
-}
-
-static int lov_delete_empty(const struct lu_env *env, struct lov_object *lov,
- union lov_layout_state *state)
-{
- LASSERT(lov->lo_type == LLT_EMPTY || lov->lo_type == LLT_RELEASED);
-
- lov_layout_wait(env, lov);
- return 0;
-}
-
static void lov_subobject_kill(const struct lu_env *env, struct lov_object *lov,
struct lov_layout_raid0 *r0,
struct lovsub_object *los, int idx)
lu_object_ref_del(&sub->co_lu, "lov-parent", lov);
cl_object_put(env, sub);
- /* ... wait until it is actually destroyed---sub-object clears its
- * ->lo_sub[] slot in lovsub_object_fini() */
+ /* ... wait until it is actually destroyed---sub-object clears its
+ * ->lo_sub[] slot in lovsub_object_free() */
if (r0->lo_sub[idx] == los) {
waiter = &lov_env_info(env)->lti_waiter;
init_waitqueue_entry(waiter, current);
}
static void lov_delete_raid0(const struct lu_env *env, struct lov_object *lov,
- struct lov_layout_raid0 *r0)
+ struct lov_layout_entry *lle)
{
+ struct lov_layout_raid0 *r0 = &lle->lle_raid0;
+
ENTRY;
if (r0->lo_sub != NULL) {
EXIT;
}
+static void lov_fini_raid0(const struct lu_env *env,
+ struct lov_layout_entry *lle)
+{
+ struct lov_layout_raid0 *r0 = &lle->lle_raid0;
+
+ if (r0->lo_sub != NULL) {
+ OBD_FREE_LARGE(r0->lo_sub, r0->lo_nr * sizeof r0->lo_sub[0]);
+ r0->lo_sub = NULL;
+ }
+}
+
+static int lov_print_raid0(const struct lu_env *env, void *cookie,
+ lu_printer_t p, const struct lov_layout_entry *lle)
+{
+ const struct lov_layout_raid0 *r0 = &lle->lle_raid0;
+ int i;
+
+ for (i = 0; i < r0->lo_nr; ++i) {
+ struct lu_object *sub;
+
+ if (r0->lo_sub[i] != NULL) {
+ sub = lovsub2lu(r0->lo_sub[i]);
+ lu_object_print(env, cookie, p, sub);
+ } else {
+ (*p)(env, cookie, "sub %d absent\n", i);
+ }
+ }
+ return 0;
+}
+
+static int lov_attr_get_raid0(const struct lu_env *env, struct lov_object *lov,
+ unsigned int index, struct lov_layout_entry *lle,
+ struct cl_attr **lov_attr)
+{
+ struct lov_layout_raid0 *r0 = &lle->lle_raid0;
+ struct lov_stripe_md *lsm = lov->lo_lsm;
+ struct ost_lvb *lvb = &lov_env_info(env)->lti_lvb;
+ struct cl_attr *attr = &r0->lo_attr;
+ __u64 kms = 0;
+ int result = 0;
+
+ if (r0->lo_attr_valid) {
+ *lov_attr = attr;
+ return 0;
+ }
+
+ memset(lvb, 0, sizeof(*lvb));
+
+ /* XXX: timestamps can be negative by sanity:test_39m,
+ * how can it be? */
+ lvb->lvb_atime = LLONG_MIN;
+ lvb->lvb_ctime = LLONG_MIN;
+ lvb->lvb_mtime = LLONG_MIN;
+
+ /*
+ * XXX that should be replaced with a loop over sub-objects,
+ * doing cl_object_attr_get() on them. But for now, let's
+ * reuse old lov code.
+ */
+
+ /*
+ * XXX take lsm spin-lock to keep lov_merge_lvb_kms()
+ * happy. It's not needed, because new code uses
+ * ->coh_attr_guard spin-lock to protect consistency of
+ * sub-object attributes.
+ */
+ lov_stripe_lock(lsm);
+ result = lov_merge_lvb_kms(lsm, index, lvb, &kms);
+ lov_stripe_unlock(lsm);
+ if (result == 0) {
+ cl_lvb2attr(attr, lvb);
+ attr->cat_kms = kms;
+ r0->lo_attr_valid = 1;
+ *lov_attr = attr;
+ }
+
+ return result;
+}
+
+static struct lov_comp_layout_entry_ops raid0_ops = {
+ .lco_init = lov_init_raid0,
+ .lco_fini = lov_fini_raid0,
+ .lco_getattr = lov_attr_get_raid0,
+};
+
+static int lov_attr_get_dom(const struct lu_env *env, struct lov_object *lov,
+ unsigned int index, struct lov_layout_entry *lle,
+ struct cl_attr **lov_attr)
+{
+ struct lov_layout_dom *dom = &lle->lle_dom;
+ struct lov_oinfo *loi = dom->lo_loi;
+ struct cl_attr *attr = &dom->lo_dom_r0.lo_attr;
+
+ if (dom->lo_dom_r0.lo_attr_valid) {
+ *lov_attr = attr;
+ return 0;
+ }
+
+ if (OST_LVB_IS_ERR(loi->loi_lvb.lvb_blocks))
+ return OST_LVB_GET_ERR(loi->loi_lvb.lvb_blocks);
+
+ cl_lvb2attr(attr, &loi->loi_lvb);
+ attr->cat_kms = attr->cat_size > loi->loi_kms ? attr->cat_size :
+ loi->loi_kms;
+ dom->lo_dom_r0.lo_attr_valid = 1;
+ *lov_attr = attr;
+
+ return 0;
+}
+
+/**
+ * Lookup FLD to get MDS index of the given DOM object FID.
+ *
+ * \param[in] ld LOV device
+ * \param[in] fid FID to lookup
+ * \param[out] nr index in MDC array to return back
+ *
+ * \retval 0 and \a mds filled with MDS index if successful
+ * \retval negative value on error
+ */
+static int lov_fld_lookup(struct lov_device *ld, const struct lu_fid *fid,
+ __u32 *nr)
+{
+ __u32 mds_idx;
+ int i, rc;
+
+ ENTRY;
+
+ rc = fld_client_lookup(&ld->ld_lmv->u.lmv.lmv_fld, fid_seq(fid),
+ &mds_idx, LU_SEQ_RANGE_MDT, NULL);
+ if (rc) {
+ CERROR("%s: error while looking for mds number. Seq %#llx"
+ ", err = %d\n", lu_dev_name(cl2lu_dev(&ld->ld_cl)),
+ fid_seq(fid), rc);
+ RETURN(rc);
+ }
+
+ CDEBUG(D_INODE, "FLD lookup got mds #%x for fid="DFID"\n",
+ mds_idx, PFID(fid));
+
+ /* find proper MDC device in the array */
+ for (i = 0; i < ld->ld_md_tgts_nr; i++) {
+ if (ld->ld_md_tgts[i].ldm_mdc != NULL &&
+ ld->ld_md_tgts[i].ldm_idx == mds_idx)
+ break;
+ }
+
+ if (i == ld->ld_md_tgts_nr) {
+ CERROR("%s: cannot find corresponding MDC device for mds #%x "
+ "for fid="DFID"\n", lu_dev_name(cl2lu_dev(&ld->ld_cl)),
+ mds_idx, PFID(fid));
+ rc = -EINVAL;
+ } else {
+ *nr = i;
+ }
+ RETURN(rc);
+}
+
+/**
+ * Implementation of lov_comp_layout_entry_ops::lco_init for DOM object.
+ *
+ * Init the DOM object for the first time. It prepares also RAID0 entry
+ * for it to use in common methods with ordinary RAID0 layout entries.
+ *
+ * \param[in] env execution environment
+ * \param[in] dev LOV device
+ * \param[in] lov LOV object
+ * \param[in] index Composite layout entry index in LSM
+ * \param[in] lle Composite LOV layout entry
+ */
+static int lov_init_dom(const struct lu_env *env, struct lov_device *dev,
+ struct lov_object *lov, unsigned int index,
+ const struct cl_object_conf *conf,
+ struct lov_layout_entry *lle)
+{
+ struct lov_thread_info *lti = lov_env_info(env);
+ struct lov_stripe_md_entry *lsme = lov_lse(lov, index);
+ struct cl_object *clo;
+ struct lu_object *o = lov2lu(lov);
+ const struct lu_fid *fid = lu_object_fid(o);
+ struct cl_device *mdcdev;
+ struct lov_oinfo *loi = NULL;
+ struct cl_object_conf *sconf = <i->lti_stripe_conf;
+ struct inode *inode = conf->coc_inode;
+
+ int rc;
+ __u32 idx = 0;
+
+ ENTRY;
+
+ LASSERT(index == 0);
+
+ /* find proper MDS device */
+ rc = lov_fld_lookup(dev, fid, &idx);
+ if (rc)
+ RETURN(rc);
+
+ LASSERTF(dev->ld_md_tgts[idx].ldm_mdc != NULL,
+ "LOV md target[%u] is NULL\n", idx);
+
+ /* check lsm is DOM, more checks are needed */
+ LASSERT(lsme->lsme_stripe_count == 0);
+
+ /*
+ * Create lower cl_objects.
+ */
+ mdcdev = dev->ld_md_tgts[idx].ldm_mdc;
+
+ LASSERTF(mdcdev != NULL, "non-initialized mdc subdev\n");
+
+ /* DoM object has no oinfo in LSM entry, create it exclusively */
+ OBD_SLAB_ALLOC_PTR_GFP(loi, lov_oinfo_slab, GFP_NOFS);
+ if (loi == NULL)
+ RETURN(-ENOMEM);
+
+ fid_to_ostid(lu_object_fid(lov2lu(lov)), &loi->loi_oi);
+ /* Initialize lvb structure */
+ loi->loi_lvb.lvb_mtime = LTIME_S(inode->i_mtime);
+ loi->loi_lvb.lvb_atime = LTIME_S(inode->i_atime);
+ loi->loi_lvb.lvb_ctime = LTIME_S(inode->i_ctime);
+ loi->loi_lvb.lvb_blocks = inode->i_blocks;
+ loi->loi_lvb.lvb_size = i_size_read(inode);
+ if (loi->loi_lvb.lvb_size > lsme->lsme_stripe_size)
+ loi->loi_lvb.lvb_size = lsme->lsme_stripe_size;
+ loi_kms_set(loi, loi->loi_lvb.lvb_size);
+
+ sconf->u.coc_oinfo = loi;
+again:
+ clo = lov_sub_find(env, mdcdev, fid, sconf);
+ if (IS_ERR(clo))
+ GOTO(out, rc = PTR_ERR(clo));
+
+ rc = lov_init_sub(env, lov, clo, loi, lov_comp_index(index, 0));
+ if (rc == -EAGAIN) /* try again */
+ goto again;
+ else if (rc != 0)
+ GOTO(out, rc);
+
+ lle->lle_dom.lo_dom = cl2lovsub(clo);
+ spin_lock_init(&lle->lle_dom.lo_dom_r0.lo_sub_lock);
+ lle->lle_dom.lo_dom_r0.lo_nr = 1;
+ lle->lle_dom.lo_dom_r0.lo_sub = &lle->lle_dom.lo_dom;
+ lle->lle_dom.lo_loi = loi;
+
+ rc = lov_page_slice_fixup(lov, clo);
+ RETURN(rc);
+
+out:
+ if (loi != NULL)
+ OBD_SLAB_FREE_PTR(loi, lov_oinfo_slab);
+ return rc;
+}
+
+/**
+ * Implementation of lov_layout_operations::llo_fini for DOM object.
+ *
+ * Finish the DOM object and free related memory.
+ *
+ * \param[in] env execution environment
+ * \param[in] lov LOV object
+ * \param[in] state LOV layout state
+ */
+static void lov_fini_dom(const struct lu_env *env,
+ struct lov_layout_entry *lle)
+{
+ if (lle->lle_dom.lo_dom != NULL)
+ lle->lle_dom.lo_dom = NULL;
+ if (lle->lle_dom.lo_loi != NULL)
+ OBD_SLAB_FREE_PTR(lle->lle_dom.lo_loi, lov_oinfo_slab);
+}
+
+static struct lov_comp_layout_entry_ops dom_ops = {
+ .lco_init = lov_init_dom,
+ .lco_fini = lov_fini_dom,
+ .lco_getattr = lov_attr_get_dom,
+};
+
+static int lov_init_composite(const struct lu_env *env, struct lov_device *dev,
+ struct lov_object *lov, struct lov_stripe_md *lsm,
+ const struct cl_object_conf *conf,
+ union lov_layout_state *state)
+{
+ struct lov_layout_composite *comp = &state->composite;
+ struct lov_layout_entry *lle;
+ unsigned int entry_count;
+ unsigned int psz = 0;
+ int result = 0;
+ int i;
+
+ ENTRY;
+
+ LASSERT(lsm->lsm_entry_count > 0);
+ LASSERT(lov->lo_lsm == NULL);
+ lov->lo_lsm = lsm_addref(lsm);
+ lov->lo_layout_invalid = true;
+
+ entry_count = lsm->lsm_entry_count;
+ comp->lo_entry_count = entry_count;
+
+ OBD_ALLOC(comp->lo_entries, entry_count * sizeof(*comp->lo_entries));
+ if (comp->lo_entries == NULL)
+ RETURN(-ENOMEM);
+
+ /* Initiate all entry types and extents data at first */
+ for (i = 0; i < entry_count; i++) {
+ lle = &comp->lo_entries[i];
+
+ lle->lle_type = lov_entry_type(lsm->lsm_entries[i]);
+ switch (lle->lle_type) {
+ case LOV_PATTERN_RAID0:
+ lle->lle_comp_ops = &raid0_ops;
+ break;
+ case LOV_PATTERN_MDT:
+ lle->lle_comp_ops = &dom_ops;
+ break;
+ default:
+ CERROR("%s: unknown composite layout entry type %i\n",
+ lov2obd(dev->ld_lov)->obd_name,
+ lsm->lsm_entries[i]->lsme_pattern);
+ dump_lsm(D_ERROR, lsm);
+ RETURN(-EIO);
+ }
+ lle->lle_extent = lsm->lsm_entries[i]->lsme_extent;
+ }
+
+ i = 0;
+ lov_foreach_layout_entry(lov, lle) {
+ /**
+ * If the component has not been init-ed on MDS side, for
+ * PFL layout, we'd know that the components beyond this one
+ * will be dynamically init-ed later on file write/trunc ops.
+ */
+ if (lsm_entry_inited(lsm, i)) {
+ result = lle->lle_comp_ops->lco_init(env, dev, lov, i,
+ conf, lle);
+ if (result < 0)
+ break;
+
+ LASSERT(ergo(psz > 0, psz == result));
+ psz = result;
+ }
+ i++;
+ }
+ if (psz > 0)
+ cl_object_header(&lov->lo_cl)->coh_page_bufsize += psz;
+
+ return result > 0 ? 0 : result;
+}
+
+static int lov_init_empty(const struct lu_env *env, struct lov_device *dev,
+ struct lov_object *lov, struct lov_stripe_md *lsm,
+ const struct cl_object_conf *conf,
+ union lov_layout_state *state)
+{
+ return 0;
+}
+
+static int lov_init_released(const struct lu_env *env,
+ struct lov_device *dev, struct lov_object *lov,
+ struct lov_stripe_md *lsm,
+ const struct cl_object_conf *conf,
+ union lov_layout_state *state)
+{
+ LASSERT(lsm != NULL);
+ LASSERT(lsm->lsm_is_released);
+ LASSERT(lov->lo_lsm == NULL);
+
+ lov->lo_lsm = lsm_addref(lsm);
+ return 0;
+}
+
+static int lov_delete_empty(const struct lu_env *env, struct lov_object *lov,
+ union lov_layout_state *state)
+{
+ LASSERT(lov->lo_type == LLT_EMPTY || lov->lo_type == LLT_RELEASED);
+
+ lov_layout_wait(env, lov);
+ return 0;
+}
+
static int lov_delete_composite(const struct lu_env *env,
struct lov_object *lov,
union lov_layout_state *state)
lov_layout_wait(env, lov);
if (comp->lo_entries)
lov_foreach_layout_entry(lov, entry)
- lov_delete_raid0(env, lov, &entry->lle_raid0);
+ lov_delete_raid0(env, lov, entry);
RETURN(0);
}
LASSERT(lov->lo_type == LLT_EMPTY || lov->lo_type == LLT_RELEASED);
}
-static void lov_fini_raid0(const struct lu_env *env,
- struct lov_layout_raid0 *r0)
-{
- if (r0->lo_sub != NULL) {
- OBD_FREE_LARGE(r0->lo_sub, r0->lo_nr * sizeof r0->lo_sub[0]);
- r0->lo_sub = NULL;
- }
-}
-
static void lov_fini_composite(const struct lu_env *env,
struct lov_object *lov,
union lov_layout_state *state)
struct lov_layout_entry *entry;
lov_foreach_layout_entry(lov, entry)
- lov_fini_raid0(env, &entry->lle_raid0);
+ entry->lle_comp_ops->lco_fini(env, entry);
OBD_FREE(comp->lo_entries,
comp->lo_entry_count * sizeof(*comp->lo_entries));
return 0;
}
-static int lov_print_raid0(const struct lu_env *env, void *cookie,
- lu_printer_t p, struct lov_layout_raid0 *r0)
-{
- int i;
-
- for (i = 0; i < r0->lo_nr; ++i) {
- struct lu_object *sub;
-
- if (r0->lo_sub[i] != NULL) {
- sub = lovsub2lu(r0->lo_sub[i]);
- lu_object_print(env, cookie, p, sub);
- } else {
- (*p)(env, cookie, "sub %d absent\n", i);
- }
- }
- return 0;
-}
-
static int lov_print_composite(const struct lu_env *env, void *cookie,
lu_printer_t p, const struct lu_object *o)
{
for (i = 0; i < lsm->lsm_entry_count; i++) {
struct lov_stripe_md_entry *lse = lsm->lsm_entries[i];
+ struct lov_layout_entry *lle = lov_entry(lov, i);
- (*p)(env, cookie, DEXT ": { 0x%08X, %u, %u, %#x, %u, %u }\n",
+ (*p)(env, cookie,
+ DEXT ": { 0x%08X, %u, %#x, %u, %#x, %u, %u }\n",
PEXT(&lse->lsme_extent), lse->lsme_magic,
- lse->lsme_id, lse->lsme_layout_gen, lse->lsme_flags,
- lse->lsme_stripe_count, lse->lsme_stripe_size);
- lov_print_raid0(env, cookie, p, lov_r0(lov, i));
+ lse->lsme_id, lse->lsme_pattern, lse->lsme_layout_gen,
+ lse->lsme_flags, lse->lsme_stripe_count,
+ lse->lsme_stripe_size);
+ lov_print_raid0(env, cookie, p, lle);
}
return 0;
return 0;
}
-static int lov_attr_get_raid0(const struct lu_env *env, struct lov_object *lov,
- unsigned int index, struct lov_layout_raid0 *r0)
-
-{
- struct lov_stripe_md *lsm = lov->lo_lsm;
- struct ost_lvb *lvb = &lov_env_info(env)->lti_lvb;
- struct cl_attr *attr = &r0->lo_attr;
- __u64 kms = 0;
- int result = 0;
-
- if (r0->lo_attr_valid)
- return 0;
-
- memset(lvb, 0, sizeof(*lvb));
-
- /* XXX: timestamps can be negative by sanity:test_39m,
- * how can it be? */
- lvb->lvb_atime = LLONG_MIN;
- lvb->lvb_ctime = LLONG_MIN;
- lvb->lvb_mtime = LLONG_MIN;
-
- /*
- * XXX that should be replaced with a loop over sub-objects,
- * doing cl_object_attr_get() on them. But for now, let's
- * reuse old lov code.
- */
-
- /*
- * XXX take lsm spin-lock to keep lov_merge_lvb_kms()
- * happy. It's not needed, because new code uses
- * ->coh_attr_guard spin-lock to protect consistency of
- * sub-object attributes.
- */
- lov_stripe_lock(lsm);
- result = lov_merge_lvb_kms(lsm, index, lvb, &kms);
- lov_stripe_unlock(lsm);
- if (result == 0) {
- cl_lvb2attr(attr, lvb);
- attr->cat_kms = kms;
- r0->lo_attr_valid = 1;
- }
-
- return result;
-}
-
static int lov_attr_get_composite(const struct lu_env *env,
struct cl_object *obj,
struct cl_attr *attr)
attr->cat_size = 0;
attr->cat_blocks = 0;
lov_foreach_layout_entry(lov, entry) {
- struct lov_layout_raid0 *r0 = &entry->lle_raid0;
- struct cl_attr *lov_attr = &r0->lo_attr;
+ struct cl_attr *lov_attr = NULL;
/* PFL: This component has not been init-ed. */
if (!lsm_entry_inited(lov->lo_lsm, index))
break;
- result = lov_attr_get_raid0(env, lov, index, r0);
- if (result != 0)
- break;
+ result = entry->lle_comp_ops->lco_getattr(env, lov, index,
+ entry, &lov_attr);
+ if (result < 0)
+ RETURN(result);
index++;
+ if (lov_attr == NULL)
+ continue;
+
/* merge results */
attr->cat_blocks += lov_attr->cat_blocks;
if (attr->cat_size < lov_attr->cat_size)
if (attr->cat_mtime < lov_attr->cat_mtime)
attr->cat_mtime = lov_attr->cat_mtime;
}
- RETURN(result);
+ RETURN(0);
}
const static struct lov_layout_operations lov_dispatch[] = {
- [LLT_EMPTY] = {
- .llo_init = lov_init_empty,
- .llo_delete = lov_delete_empty,
- .llo_fini = lov_fini_empty,
- .llo_print = lov_print_empty,
- .llo_page_init = lov_page_init_empty,
- .llo_lock_init = lov_lock_init_empty,
- .llo_io_init = lov_io_init_empty,
+ [LLT_EMPTY] = {
+ .llo_init = lov_init_empty,
+ .llo_delete = lov_delete_empty,
+ .llo_fini = lov_fini_empty,
+ .llo_print = lov_print_empty,
+ .llo_page_init = lov_page_init_empty,
+ .llo_lock_init = lov_lock_init_empty,
+ .llo_io_init = lov_io_init_empty,
.llo_getattr = lov_attr_get_empty,
- },
- [LLT_RELEASED] = {
- .llo_init = lov_init_released,
- .llo_delete = lov_delete_empty,
- .llo_fini = lov_fini_released,
- .llo_print = lov_print_released,
- .llo_page_init = lov_page_init_empty,
- .llo_lock_init = lov_lock_init_empty,
- .llo_io_init = lov_io_init_released,
+ },
+ [LLT_RELEASED] = {
+ .llo_init = lov_init_released,
+ .llo_delete = lov_delete_empty,
+ .llo_fini = lov_fini_released,
+ .llo_print = lov_print_released,
+ .llo_page_init = lov_page_init_empty,
+ .llo_lock_init = lov_lock_init_empty,
+ .llo_io_init = lov_io_init_released,
.llo_getattr = lov_attr_get_empty,
},
[LLT_COMP] = {
bool fs_enough;
};
+static struct cl_object *lov_find_subobj(const struct lu_env *env,
+ struct lov_object *lov,
+ struct lov_stripe_md *lsm,
+ int index)
+{
+ struct lov_device *dev = lu2lov_dev(lov2lu(lov)->lo_dev);
+ struct lov_thread_info *lti = lov_env_info(env);
+ struct lu_fid *ofid = <i->lti_fid;
+ struct lov_oinfo *oinfo;
+ struct cl_device *subdev;
+ int entry = lov_comp_entry(index);
+ int stripe = lov_comp_stripe(index);
+ int ost_idx;
+ int rc;
+ struct cl_object *result;
+
+ if (lov->lo_type != LLT_COMP)
+ GOTO(out, result = NULL);
+
+ if (entry >= lsm->lsm_entry_count ||
+ stripe >= lsm->lsm_entries[entry]->lsme_stripe_count)
+ GOTO(out, result = NULL);
+
+ oinfo = lsm->lsm_entries[entry]->lsme_oinfo[stripe];
+ ost_idx = oinfo->loi_ost_idx;
+ rc = ostid_to_fid(ofid, &oinfo->loi_oi, ost_idx);
+ if (rc != 0)
+ GOTO(out, result = NULL);
+
+ subdev = lovsub2cl_dev(dev->ld_target[ost_idx]);
+ result = lov_sub_find(env, subdev, ofid, NULL);
+out:
+ if (result == NULL)
+ result = ERR_PTR(-EINVAL);
+ return result;
+}
+
int fiemap_for_stripe(const struct lu_env *env, struct cl_object *obj,
struct lov_stripe_md *lsm, struct fiemap *fiemap,
size_t *buflen, struct ll_fiemap_info_key *fmkey,
GOTO(out_lsm, rc = -ENOTSUPP);
}
+ /* No support for DOM layout yet. */
+ if (lsme_is_dom(lsm->lsm_entries[0]))
+ GOTO(out_lsm, rc = -ENOTSUPP);
+
if (lsm->lsm_is_released) {
if (fiemap->fm_start < fmkey->lfik_oa.o_size) {
/**
git://git.whamcloud.com / fs / lustre-release.git / commitdiff