* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* lustre/lod/lod_object.c
#define DEBUG_SUBSYSTEM S_MDS
+#include <linux/random.h>
+
#include <obd.h>
#include <obd_class.h>
#include <obd_support.h>
*/
static int lod_insert(const struct lu_env *env, struct dt_object *dt,
const struct dt_rec *rec, const struct dt_key *key,
- struct thandle *th, int ign)
+ struct thandle *th)
{
- return lod_sub_insert(env, dt_object_child(dt), rec, key, th, ign);
+ return lod_sub_insert(env, dt_object_child(dt), rec, key, th);
}
/**
static struct dt_it *lod_striped_it_init(const struct lu_env *env,
struct dt_object *dt, __u32 attr)
{
- struct lod_object *lo = lod_dt_obj(dt);
- struct dt_object *next;
- struct lod_it *it = &lod_env_info(env)->lti_it;
- struct dt_it *it_next;
- ENTRY;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next;
+ struct lod_it *it = &lod_env_info(env)->lti_it;
+ struct dt_it *it_next;
+ __u16 index = 0;
LASSERT(lo->ldo_dir_stripe_count > 0);
- next = lo->ldo_stripe[0];
- LASSERT(next != NULL);
+
+ do {
+ next = lo->ldo_stripe[index];
+ if (next && dt_object_exists(next))
+ break;
+ } while (++index < lo->ldo_dir_stripe_count);
+
+ /* no valid stripe */
+ if (!next || !dt_object_exists(next))
+ return ERR_PTR(-ENODEV);
+
LASSERT(next->do_index_ops != NULL);
it_next = next->do_index_ops->dio_it.init(env, next, attr);
* additional ones */
LASSERT(it->lit_obj == NULL);
- it->lit_stripe_index = 0;
+ it->lit_stripe_index = index;
it->lit_attr = attr;
it->lit_it = it_next;
it->lit_obj = dt;
LOD_CHECK_STRIPED_IT(env, it, lo);
next = lo->ldo_stripe[it->lit_stripe_index];
- LASSERT(next != NULL);
- LASSERT(next->do_index_ops != NULL);
-
- next->do_index_ops->dio_it.fini(env, it->lit_it);
+ if (next) {
+ LASSERT(next->do_index_ops != NULL);
+ next->do_index_ops->dio_it.fini(env, it->lit_it);
+ }
}
/* the iterator not in use any more */
static int lod_striped_it_get(const struct lu_env *env, struct dt_it *di,
const struct dt_key *key)
{
- const struct lod_it *it = (const struct lod_it *)di;
- struct lod_object *lo = lod_dt_obj(it->lit_obj);
- struct dt_object *next;
- ENTRY;
+ const struct lod_it *it = (const struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
LOD_CHECK_STRIPED_IT(env, it, lo);
next = lo->ldo_stripe[it->lit_stripe_index];
LASSERT(next != NULL);
+ LASSERT(dt_object_exists(next));
LASSERT(next->do_index_ops != NULL);
return next->do_index_ops->dio_it.get(env, it->lit_it, key);
*/
static void lod_striped_it_put(const struct lu_env *env, struct dt_it *di)
{
- struct lod_it *it = (struct lod_it *)di;
- struct lod_object *lo = lod_dt_obj(it->lit_obj);
- struct dt_object *next;
+ struct lod_it *it = (struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+
+ /*
+ * If lit_it == NULL, then it means the sub_it has been finished,
+ * which only happens in failure cases, see lod_striped_it_next()
+ */
+ if (!it->lit_it)
+ return;
LOD_CHECK_STRIPED_IT(env, it, lo);
*/
static int lod_striped_it_next(const struct lu_env *env, struct dt_it *di)
{
- struct lod_it *it = (struct lod_it *)di;
- struct lod_object *lo = lod_dt_obj(it->lit_obj);
- struct dt_object *next;
- struct dt_it *it_next;
- int rc;
+ struct lod_it *it = (struct lod_it *)di;
+ struct lod_object *lo = lod_dt_obj(it->lit_obj);
+ struct dt_object *next;
+ struct dt_it *it_next;
+ __u32 index;
+ int rc;
+
ENTRY;
LOD_CHECK_STRIPED_IT(env, it, lo);
next = lo->ldo_stripe[it->lit_stripe_index];
LASSERT(next != NULL);
+ LASSERT(dt_object_exists(next));
LASSERT(next->do_index_ops != NULL);
again:
rc = next->do_index_ops->dio_it.next(env, it->lit_it);
RETURN(rc);
}
- /* go to next stripe */
- if (it->lit_stripe_index + 1 >= lo->ldo_dir_stripe_count)
- RETURN(1);
-
- it->lit_stripe_index++;
-
next->do_index_ops->dio_it.put(env, it->lit_it);
next->do_index_ops->dio_it.fini(env, it->lit_it);
it->lit_it = NULL;
- next = lo->ldo_stripe[it->lit_stripe_index];
- LASSERT(next != NULL);
- rc = next->do_ops->do_index_try(env, next, &dt_directory_features);
- if (rc != 0)
- RETURN(rc);
+ /* go to next stripe */
+ index = it->lit_stripe_index;
+ while (++index < lo->ldo_dir_stripe_count) {
+ next = lo->ldo_stripe[index];
+ if (!next)
+ continue;
- LASSERT(next->do_index_ops != NULL);
+ if (!dt_object_exists(next))
+ continue;
+
+ rc = next->do_ops->do_index_try(env, next,
+ &dt_directory_features);
+ if (rc != 0)
+ RETURN(rc);
+
+ LASSERT(next->do_index_ops != NULL);
+
+ it_next = next->do_index_ops->dio_it.init(env, next,
+ it->lit_attr);
+ if (IS_ERR(it_next))
+ RETURN(PTR_ERR(it_next));
+
+ rc = next->do_index_ops->dio_it.get(env, it_next,
+ (const struct dt_key *)"");
+ if (rc <= 0)
+ RETURN(rc == 0 ? -EIO : rc);
- it_next = next->do_index_ops->dio_it.init(env, next, it->lit_attr);
- if (!IS_ERR(it_next)) {
it->lit_it = it_next;
+ it->lit_stripe_index = index;
goto again;
- } else {
- rc = PTR_ERR(it_next);
+
}
- RETURN(rc);
+ RETURN(1);
}
/**
int rc;
ENTRY;
- /* If it is not a striped directory, then load nothing. */
if (magic != LMV_MAGIC_V1)
RETURN(0);
- /* If it is in migration (or failure), then load nothing. */
- if (le32_to_cpu(lmv1->lmv_hash_type) & LMV_HASH_FLAG_MIGRATION)
- RETURN(0);
-
stripes = le32_to_cpu(lmv1->lmv_stripe_count);
if (stripes < 1)
RETURN(0);
LASSERT(next->do_ops);
LASSERT(next->do_ops->do_index_try);
- rc = lod_load_striping_locked(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc != 0)
RETURN(rc);
int i;
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- if (dt_object_exists(lo->ldo_stripe[i]) == 0)
+ if (!lo->ldo_stripe[i])
+ continue;
+ if (!dt_object_exists(lo->ldo_stripe[i]))
continue;
rc = lo->ldo_stripe[i]->do_ops->do_index_try(env,
lo->ldo_stripe[i], feat);
return dt_attr_get(env, dt_object_child(dt), attr);
}
+static inline void lod_adjust_stripe_info(struct lod_layout_component *comp,
+ struct lov_desc *desc,
+ int append_stripes)
+{
+ if (comp->llc_pattern != LOV_PATTERN_MDT) {
+ if (append_stripes) {
+ comp->llc_stripe_count = append_stripes;
+ } else if (!comp->llc_stripe_count) {
+ comp->llc_stripe_count =
+ desc->ld_default_stripe_count;
+ }
+ }
+ if (comp->llc_stripe_size <= 0)
+ comp->llc_stripe_size = desc->ld_default_stripe_size;
+}
+
int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
- struct thandle *th, lod_obj_stripe_cb_t cb,
+ struct thandle *th,
struct lod_obj_stripe_cb_data *data)
{
struct lod_layout_component *lod_comp;
if (lod_comp->llc_stripe == NULL)
continue;
+ /* has stripe but not inited yet, this component has been
+ * declared to be created, but hasn't created yet.
+ */
+ if (!lod_comp_inited(lod_comp))
+ continue;
+
+ if (data->locd_comp_skip_cb &&
+ data->locd_comp_skip_cb(env, lo, i, data))
+ continue;
+
+ if (data->locd_comp_cb) {
+ rc = data->locd_comp_cb(env, lo, i, data);
+ if (rc)
+ RETURN(rc);
+ }
+
+ /* could used just to do sth about component, not each
+ * stripes
+ */
+ if (!data->locd_stripe_cb)
+ continue;
+
LASSERT(lod_comp->llc_stripe_count > 0);
for (j = 0; j < lod_comp->llc_stripe_count; j++) {
struct dt_object *dt = lod_comp->llc_stripe[j];
if (dt == NULL)
continue;
- rc = cb(env, lo, dt, th, j, data);
+ rc = data->locd_stripe_cb(env, lo, dt, th, i, j, data);
if (rc != 0)
RETURN(rc);
}
RETURN(0);
}
+static bool lod_obj_attr_set_comp_skip_cb(const struct lu_env *env,
+ struct lod_object *lo, int comp_idx,
+ struct lod_obj_stripe_cb_data *data)
+{
+ struct lod_layout_component *lod_comp = &lo->ldo_comp_entries[comp_idx];
+ bool skipped = false;
+
+ if (!(data->locd_attr->la_valid & LA_LAYOUT_VERSION))
+ return skipped;
+
+ switch (lo->ldo_flr_state) {
+ case LCM_FL_WRITE_PENDING: {
+ int i;
+
+ /* skip stale components */
+ if (lod_comp->llc_flags & LCME_FL_STALE) {
+ skipped = true;
+ break;
+ }
+
+ /* skip valid and overlapping components, therefore any
+ * attempts to write overlapped components will never succeed
+ * because client will get EINPROGRESS. */
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ if (i == comp_idx)
+ continue;
+
+ if (lo->ldo_comp_entries[i].llc_flags & LCME_FL_STALE)
+ continue;
+
+ if (lu_extent_is_overlapped(&lod_comp->llc_extent,
+ &lo->ldo_comp_entries[i].llc_extent)) {
+ skipped = true;
+ break;
+ }
+ }
+ break;
+ }
+ default:
+ LASSERTF(0, "impossible: %d\n", lo->ldo_flr_state);
+ case LCM_FL_SYNC_PENDING:
+ break;
+ }
+
+ CDEBUG(D_LAYOUT, DFID": %s to set component %x to version: %u\n",
+ PFID(lu_object_fid(&lo->ldo_obj.do_lu)),
+ skipped ? "skipped" : "chose", lod_comp->llc_id,
+ data->locd_attr->la_layout_version);
+
+ return skipped;
+}
+
static inline int
lod_obj_stripe_attr_set_cb(const struct lu_env *env, struct lod_object *lo,
struct dt_object *dt, struct thandle *th,
- int stripe_idx, struct lod_obj_stripe_cb_data *data)
+ int comp_idx, int stripe_idx,
+ struct lod_obj_stripe_cb_data *data)
{
if (data->locd_declare)
return lod_sub_declare_attr_set(env, dt, data->locd_attr, th);
+ if (data->locd_attr->la_valid & LA_LAYOUT_VERSION) {
+ CDEBUG(D_LAYOUT, DFID": set layout version: %u, comp_idx: %d\n",
+ PFID(lu_object_fid(&dt->do_lu)),
+ data->locd_attr->la_layout_version, comp_idx);
+ }
+
return lod_sub_attr_set(env, dt, data->locd_attr, th);
}
* speed up rename().
*/
if (!S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
- if (!(attr->la_valid & (LA_UID | LA_GID | LA_PROJID)))
+ if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
RETURN(rc);
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_OWNER))
* is being initialized as we don't need this information till
* few specific cases like destroy, chown
*/
- rc = lod_load_striping(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc)
RETURN(rc);
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
if (lo->ldo_stripe[i] == NULL)
continue;
+ if (!dt_object_exists(lo->ldo_stripe[i]))
+ continue;
rc = lod_sub_declare_attr_set(env, lo->ldo_stripe[i],
attr, th);
if (rc != 0)
RETURN(rc);
}
} else {
- struct lod_obj_stripe_cb_data data;
+ struct lod_obj_stripe_cb_data data = { { 0 } };
data.locd_attr = attr;
data.locd_declare = true;
- rc = lod_obj_for_each_stripe(env, lo, th,
- lod_obj_stripe_attr_set_cb, &data);
+ data.locd_stripe_cb = lod_obj_stripe_attr_set_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
if (rc)
RETURN(rc);
if (!S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
- if (!(attr->la_valid & (LA_UID | LA_GID | LA_PROJID)))
+ if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
RETURN(rc);
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_OWNER))
RETURN(rc);
}
+ /* FIXME: a tricky case in the code path of mdd_layout_change():
+ * the in-memory striping information has been freed in lod_xattr_set()
+ * due to layout change. It has to load stripe here again. It only
+ * changes flags of layout so declare_attr_set() is still accurate */
+ rc = lod_striping_load(env, lo);
+ if (rc)
+ RETURN(rc);
+
if (!lod_obj_is_striped(dt))
RETURN(0);
break;
}
} else {
- struct lod_obj_stripe_cb_data data;
+ struct lod_obj_stripe_cb_data data = { { 0 } };
data.locd_attr = attr;
data.locd_declare = false;
- rc = lod_obj_for_each_stripe(env, lo, th,
- lod_obj_stripe_attr_set_cb, &data);
+ data.locd_comp_skip_cb = lod_obj_attr_set_comp_skip_cb;
+ data.locd_stripe_cb = lod_obj_stripe_attr_set_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
if (rc)
buf->lb_len = info->lti_ea_store_size;
lmm = info->lti_ea_store;
magic = le32_to_cpu(lmm->lmm_magic);
- if (magic == LOV_MAGIC_COMP_V1) {
+ if (magic == LOV_MAGIC_COMP_V1 || magic == LOV_MAGIC_SEL) {
struct lov_comp_md_v1 *lcm = buf->lb_buf;
struct lov_comp_md_entry_v1 *lcme =
&lcm->lcm_entries[0];
buf->lb_buf = info->lti_ea_store;
buf->lb_len = info->lti_ea_store_size;
lcm = buf->lb_buf;
- if (le32_to_cpu(lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
+ if (le32_to_cpu(lcm->lcm_magic) != LOV_MAGIC_COMP_V1 &&
+ le32_to_cpu(lcm->lcm_magic) != LOV_MAGIC_SEL)
RETURN(-EINVAL);
le32_add_cpu(&lcm->lcm_layout_gen, 1);
rc = dt_xattr_get(env, dt_object_child(dt), buf, name);
if (strcmp(name, XATTR_NAME_LMV) == 0) {
struct lmv_mds_md_v1 *lmv1;
+ struct lmv_foreign_md *lfm;
int rc1 = 0;
if (rc > (typeof(rc))sizeof(*lmv1))
RETURN(rc);
- if (rc < (typeof(rc))sizeof(*lmv1))
+ /* short (<= sizeof(struct lmv_mds_md_v1)) foreign LMV case */
+ /* XXX empty foreign LMV is not allowed */
+ if (rc <= offsetof(typeof(*lfm), lfm_value))
RETURN(rc = rc > 0 ? -EINVAL : rc);
if (buf->lb_buf == NULL || buf->lb_len == 0) {
CLASSERT(sizeof(*lmv1) <= sizeof(info->lti_key));
+ /* lti_buf is large enough for *lmv1 or a short
+ * (<= sizeof(struct lmv_mds_md_v1)) foreign LMV
+ */
info->lti_buf.lb_buf = info->lti_key;
info->lti_buf.lb_len = sizeof(*lmv1);
rc = dt_xattr_get(env, dt_object_child(dt),
&info->lti_buf, name);
+ if (unlikely(rc <= offsetof(typeof(*lfm),
+ lfm_value)))
+ RETURN(rc = rc > 0 ? -EINVAL : rc);
+
+ lfm = info->lti_buf.lb_buf;
+ if (le32_to_cpu(lfm->lfm_magic) == LMV_MAGIC_FOREIGN)
+ RETURN(rc);
+
if (unlikely(rc != sizeof(*lmv1)))
RETURN(rc = rc > 0 ? -EINVAL : rc);
le32_to_cpu(lmv1->lmv_stripe_count),
LMV_MAGIC_V1);
} else {
+ lfm = buf->lb_buf;
+ if (le32_to_cpu(lfm->lfm_magic) == LMV_MAGIC_FOREIGN)
+ RETURN(rc);
+
+ if (rc != sizeof(*lmv1))
+ RETURN(rc = rc > 0 ? -EINVAL : rc);
+
rc1 = lod_load_lmv_shards(env, lod_dt_obj(dt),
buf, false);
}
RETURN(rc = rc1 != 0 ? rc1 : rc);
}
+ if ((rc > 0) && buf->lb_buf && strcmp(name, XATTR_NAME_LOV) == 0) {
+ struct lov_comp_md_v1 *lcm = buf->lb_buf;
+
+ if (lcm->lcm_magic == cpu_to_le32(LOV_MAGIC_SEL))
+ lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
+ }
+
if (rc != -ENODATA || !S_ISDIR(dt->do_lu.lo_header->loh_attr & S_IFMT))
RETURN(rc);
if (is_root && strcmp(XATTR_NAME_LOV, name) == 0) {
struct lov_user_md *lum = buf->lb_buf;
- struct lov_desc *desc = &dev->lod_desc;
+ struct lov_desc *desc = &dev->lod_ost_descs.ltd_lov_desc;
if (buf->lb_buf == NULL) {
rc = sizeof(*lum);
}
lmm1 = (struct lmv_mds_md_v1 *)info->lti_ea_store;
+ memset(lmm1, 0, sizeof(*lmm1));
lmm1->lmv_magic = cpu_to_le32(LMV_MAGIC);
lmm1->lmv_stripe_count = cpu_to_le32(stripe_count);
lmm1->lmv_hash_type = cpu_to_le32(lo->ldo_dir_hash_type);
+ if (lo->ldo_dir_hash_type & LMV_HASH_FLAG_MIGRATION) {
+ lmm1->lmv_migrate_hash = cpu_to_le32(lo->ldo_dir_migrate_hash);
+ lmm1->lmv_migrate_offset =
+ cpu_to_le32(lo->ldo_dir_migrate_offset);
+ }
rc = lod_fld_lookup(env, lod, lu_object_fid(&dt->do_lu),
&mdtidx, &type);
if (rc != 0)
int rc = 0;
ENTRY;
- if (le32_to_cpu(lmv1->lmv_hash_type) & LMV_HASH_FLAG_MIGRATION)
+ LASSERT(mutex_is_locked(&lo->ldo_layout_mutex));
+
+ /* XXX may be useless as not called for foreign LMV ?? */
+ if (le32_to_cpu(lmv1->lmv_magic) == LMV_MAGIC_FOREIGN)
RETURN(0);
if (le32_to_cpu(lmv1->lmv_magic) == LMV_MAGIC_STRIPE) {
__u32 idx;
fid_le_to_cpu(fid, &lmv1->lmv_stripe_fids[i]);
- if (!fid_is_sane(fid))
- GOTO(out, rc = -ESTALE);
+ if (!fid_is_sane(fid)) {
+ stripe[i] = NULL;
+ continue;
+ }
rc = lod_fld_lookup(env, lod, fid, &idx, &type);
if (rc != 0)
lo->ldo_dir_stripe_count = le32_to_cpu(lmv1->lmv_stripe_count);
lo->ldo_dir_stripes_allocated = le32_to_cpu(lmv1->lmv_stripe_count);
if (rc != 0)
- lod_object_free_striping(env, lo);
+ lod_striping_free_nolock(env, lo);
RETURN(rc);
}
struct linkea_data ldata = { NULL };
struct lu_buf linkea_buf;
+ /* OBD_FAIL_MDS_STRIPE_FID may leave stripe uninitialized */
+ if (!dto)
+ continue;
+
rc = lod_sub_declare_create(env, dto, attr, NULL, dof, th);
if (rc != 0)
GOTO(out, rc);
RETURN(rc);
}
-static int lod_prep_md_striped_create(const struct lu_env *env,
- struct dt_object *dt,
- struct lu_attr *attr,
- const struct lmv_user_md_v1 *lum,
- struct dt_object_format *dof,
- struct thandle *th)
+/**
+ * Allocate a striping on a predefined set of MDTs.
+ *
+ * Allocates new striping using the MDT index range provided by the data from
+ * the lum_obejcts contained in the lmv_user_md passed to this method if
+ * \a is_specific is true; or allocates new layout starting from MDT index in
+ * lo->ldo_dir_stripe_offset. The exact order of MDTs is not important and
+ * varies depending on MDT status. The number of stripes needed and stripe
+ * offset are taken from the object. If that number cannot be met, then the
+ * function returns an error and then it's the caller's responsibility to
+ * release the stripes allocated. All the internal structures are protected,
+ * but no concurrent allocation is allowed on the same objects.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[out] stripes striping created
+ * \param[out] mdt_indices MDT indices of striping created
+ * \param[in] is_specific true if the MDTs are provided by lum; false if
+ * only the starting MDT index is provided
+ *
+ * \retval positive stripes allocated, including the first stripe allocated
+ * outside
+ * \retval negative errno on failure
+ */
+static int lod_mdt_alloc_specific(const struct lu_env *env,
+ struct lod_object *lo,
+ struct dt_object **stripes,
+ __u32 *mdt_indices, bool is_specific)
{
- struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
- struct lod_tgt_descs *ltd = &lod->lod_mdt_descs;
- struct lod_object *lo = lod_dt_obj(dt);
- struct dt_object **stripe;
- __u32 stripe_count;
- int *idx_array;
- __u32 master_index;
- int rc = 0;
- __u32 i;
- __u32 j;
- ENTRY;
-
- /* The lum has been verifed in lod_verify_md_striping */
- LASSERT(le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC);
- LASSERT(le32_to_cpu(lum->lum_stripe_count) > 0);
-
- stripe_count = le32_to_cpu(lum->lum_stripe_count);
-
- OBD_ALLOC(idx_array, sizeof(idx_array[0]) * stripe_count);
- if (idx_array == NULL)
- RETURN(-ENOMEM);
-
- OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_count);
- if (stripe == NULL)
- GOTO(out_free, rc = -ENOMEM);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lu_tgt_descs *ltd = &lod->lod_mdt_descs;
+ struct lu_tgt_desc *tgt = NULL;
+ struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
+ struct dt_device *tgt_dt = NULL;
+ struct lu_fid fid = { 0 };
+ struct dt_object *dto;
+ u32 master_index;
+ u32 stripe_count = lo->ldo_dir_stripe_count;
+ int stripe_idx = 1;
+ int j;
+ int idx;
+ int rc;
- /* Start index must be the master MDT */
master_index = lu_site2seq(lod2lu_dev(lod)->ld_site)->ss_node_id;
- idx_array[0] = master_index;
- for (i = 0; i < stripe_count; i++) {
- struct lod_tgt_desc *tgt = NULL;
- struct dt_object *dto;
- struct lu_fid fid = { 0 };
- int idx;
- struct lu_object_conf conf = { 0 };
- struct dt_device *tgt_dt = NULL;
+ if (stripe_count > 1)
+ /* Set the start index for the 2nd stripe allocation */
+ mdt_indices[1] = (mdt_indices[0] + 1) %
+ (lod->lod_remote_mdt_count + 1);
+ for (; stripe_idx < stripe_count; stripe_idx++) {
/* Try to find next avaible target */
- idx = idx_array[i];
+ idx = mdt_indices[stripe_idx];
for (j = 0; j < lod->lod_remote_mdt_count;
j++, idx = (idx + 1) % (lod->lod_remote_mdt_count + 1)) {
bool already_allocated = false;
__u32 k;
CDEBUG(D_INFO, "try idx %d, mdt cnt %u, allocated %u\n",
- idx, lod->lod_remote_mdt_count + 1, i);
+ idx, lod->lod_remote_mdt_count + 1, stripe_idx);
- if (likely(!OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))) {
+ if (likely(!is_specific &&
+ !OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))) {
/* check whether the idx already exists
* in current allocated array */
- for (k = 0; k < i; k++) {
- if (idx_array[k] == idx) {
+ for (k = 0; k < stripe_idx; k++) {
+ if (mdt_indices[k] == idx) {
already_allocated = true;
break;
}
rc = obd_fid_alloc(env, lod->lod_child_exp,
&fid, NULL);
if (rc < 0)
- GOTO(out_put, rc);
+ continue;
tgt_dt = lod->lod_child;
break;
}
/* check the status of the OSP */
tgt = LTD_TGT(ltd, idx);
- if (tgt == NULL)
+ if (!tgt)
continue;
tgt_dt = tgt->ltd_tgt;
- rc = dt_statfs(env, tgt_dt, NULL);
- if (rc) {
+ rc = dt_statfs(env, tgt_dt, &info->lti_osfs);
+ if (rc)
/* this OSP doesn't feel well */
- rc = 0;
continue;
- }
rc = obd_fid_alloc(env, tgt->ltd_exp, &fid, NULL);
- if (rc < 0) {
- rc = 0;
+ if (rc < 0)
continue;
- }
break;
}
/* Can not allocate more stripes */
if (j == lod->lod_remote_mdt_count) {
CDEBUG(D_INFO, "%s: require stripes %u only get %d\n",
- lod2obd(lod)->obd_name, stripe_count, i);
+ lod2obd(lod)->obd_name, stripe_count,
+ stripe_idx);
break;
}
CDEBUG(D_INFO, "Get idx %d, for stripe %d "DFID"\n",
- idx, i, PFID(&fid));
- idx_array[i] = idx;
+ idx, stripe_idx, PFID(&fid));
+ mdt_indices[stripe_idx] = idx;
/* Set the start index for next stripe allocation */
- if (i < stripe_count - 1)
- idx_array[i + 1] = (idx + 1) %
+ if (!is_specific && stripe_idx < stripe_count - 1) {
+ /*
+ * for large dir test, put all other slaves on one
+ * remote MDT, otherwise we may save too many local
+ * slave locks which will exceed RS_MAX_LOCKS.
+ */
+ if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE)))
+ idx = master_index;
+ mdt_indices[stripe_idx + 1] = (idx + 1) %
(lod->lod_remote_mdt_count + 1);
+ }
/* tgt_dt and fid must be ready after search avaible OSP
* in the above loop */
LASSERT(tgt_dt != NULL);
LASSERT(fid_is_sane(&fid));
- conf.loc_flags = LOC_F_NEW;
+
+ /* fail a remote stripe FID allocation */
+ if (stripe_idx && OBD_FAIL_CHECK(OBD_FAIL_MDS_STRIPE_FID))
+ continue;
+
dto = dt_locate_at(env, tgt_dt, &fid,
- dt->do_lu.lo_dev->ld_site->ls_top_dev,
- &conf);
- if (IS_ERR(dto))
- GOTO(out_put, rc = PTR_ERR(dto));
- stripe[i] = dto;
+ lo->ldo_obj.do_lu.lo_dev->ld_site->ls_top_dev,
+ &conf);
+ if (IS_ERR(dto)) {
+ rc = PTR_ERR(dto);
+ goto error;
+ }
+
+ stripes[stripe_idx] = dto;
}
- lo->ldo_dir_stripe_loaded = 1;
- lo->ldo_dir_striped = 1;
- lo->ldo_stripe = stripe;
- lo->ldo_dir_stripe_count = i;
- lo->ldo_dir_stripes_allocated = stripe_count;
+ return stripe_idx;
- if (lo->ldo_dir_stripe_count == 0)
- GOTO(out_put, rc = -ENOSPC);
+error:
+ for (j = 1; j < stripe_idx; j++) {
+ LASSERT(stripes[j] != NULL);
+ dt_object_put(env, stripes[j]);
+ stripes[j] = NULL;
+ }
+ return rc;
+}
- rc = lod_dir_declare_create_stripes(env, dt, attr, dof, th);
- if (rc != 0)
- GOTO(out_put, rc);
+static int lod_prep_md_striped_create(const struct lu_env *env,
+ struct dt_object *dt,
+ struct lu_attr *attr,
+ const struct lmv_user_md_v1 *lum,
+ struct dt_object_format *dof,
+ struct thandle *th)
+{
+ struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object **stripes;
+ struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
+ struct lu_fid fid = { 0 };
+ __u32 stripe_count;
+ int i;
+ int rc = 0;
-out_put:
- if (rc < 0) {
- for (i = 0; i < stripe_count; i++)
- if (stripe[i] != NULL)
- dt_object_put(env, stripe[i]);
- OBD_FREE(stripe, sizeof(stripe[0]) * stripe_count);
- lo->ldo_dir_stripe_count = 0;
- lo->ldo_dir_stripes_allocated = 0;
- lo->ldo_stripe = NULL;
+ ENTRY;
+
+ /* The lum has been verifed in lod_verify_md_striping */
+ LASSERT(le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC ||
+ le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC);
+
+ stripe_count = lo->ldo_dir_stripe_count;
+
+ OBD_ALLOC(stripes, sizeof(stripes[0]) * stripe_count);
+ if (!stripes)
+ RETURN(-ENOMEM);
+
+ /* Allocate the first stripe locally */
+ rc = obd_fid_alloc(env, lod->lod_child_exp, &fid, NULL);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ stripes[0] = dt_locate_at(env, lod->lod_child, &fid,
+ dt->do_lu.lo_dev->ld_site->ls_top_dev, &conf);
+ if (IS_ERR(stripes[0]))
+ GOTO(out, rc = PTR_ERR(stripes[0]));
+
+ if (lo->ldo_dir_stripe_offset == LMV_OFFSET_DEFAULT) {
+ lod_qos_statfs_update(env, lod, &lod->lod_mdt_descs);
+ rc = lod_mdt_alloc_qos(env, lo, stripes);
+ if (rc == -EAGAIN)
+ rc = lod_mdt_alloc_rr(env, lo, stripes);
+ } else {
+ int *idx_array;
+ bool is_specific = false;
+
+ OBD_ALLOC(idx_array, sizeof(idx_array[0]) * stripe_count);
+ if (!idx_array)
+ GOTO(out, rc = -ENOMEM);
+
+ if (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC) {
+ is_specific = true;
+ for (i = 0; i < stripe_count; i++)
+ idx_array[i] =
+ le32_to_cpu(lum->lum_objects[i].lum_mds);
+ }
+
+ /* stripe 0 is local */
+ idx_array[0] =
+ lu_site2seq(lod2lu_dev(lod)->ld_site)->ss_node_id;
+ rc = lod_mdt_alloc_specific(env, lo, stripes, idx_array,
+ is_specific);
+ OBD_FREE(idx_array, sizeof(idx_array[0]) * stripe_count);
}
-out_free:
- OBD_FREE(idx_array, sizeof(idx_array[0]) * stripe_count);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ LASSERT(rc > 0);
+
+ lo->ldo_dir_striped = 1;
+ lo->ldo_stripe = stripes;
+ lo->ldo_dir_stripe_count = rc;
+ lo->ldo_dir_stripes_allocated = stripe_count;
+ smp_mb();
+ lo->ldo_dir_stripe_loaded = 1;
+
+ rc = lod_dir_declare_create_stripes(env, dt, attr, dof, th);
+ if (rc < 0)
+ lod_striping_free(env, lo);
RETURN(rc);
+
+out:
+ LASSERT(rc < 0);
+ if (!IS_ERR_OR_NULL(stripes[0]))
+ dt_object_put(env, stripes[0]);
+ for (i = 1; i < stripe_count; i++)
+ LASSERT(!stripes[i]);
+ OBD_FREE(stripes, sizeof(stripes[0]) * stripe_count);
+
+ return rc;
+}
+
+/**
+ *
+ * Alloc cached foreign LMV
+ *
+ * \param[in] lo object
+ * \param[in] size size of foreign LMV
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+int lod_alloc_foreign_lmv(struct lod_object *lo, size_t size)
+{
+ OBD_ALLOC_LARGE(lo->ldo_foreign_lmv, size);
+ if (lo->ldo_foreign_lmv == NULL)
+ return -ENOMEM;
+ lo->ldo_foreign_lmv_size = size;
+ lo->ldo_dir_is_foreign = 1;
+
+ return 0;
}
/**
struct thandle *th)
{
struct lod_object *lo = lod_dt_obj(dt);
- struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
- struct lmv_user_md_v1 *lum;
+ struct lmv_user_md_v1 *lum = lum_buf->lb_buf;
int rc;
ENTRY;
- lum = lum_buf->lb_buf;
LASSERT(lum != NULL);
CDEBUG(D_INFO, "lum magic = %x count = %u offset = %d\n",
le32_to_cpu(lum->lum_magic), le32_to_cpu(lum->lum_stripe_count),
(int)le32_to_cpu(lum->lum_stripe_offset));
- if (le32_to_cpu(lum->lum_stripe_count) == 0)
+ if (lo->ldo_dir_stripe_count == 0) {
+ if (lo->ldo_dir_is_foreign) {
+ rc = lod_alloc_foreign_lmv(lo, lum_buf->lb_len);
+ if (rc != 0)
+ GOTO(out, rc);
+ memcpy(lo->ldo_foreign_lmv, lum, lum_buf->lb_len);
+ lo->ldo_dir_stripe_loaded = 1;
+ }
GOTO(out, rc = 0);
-
- rc = lod_verify_md_striping(lod, lum);
- if (rc != 0)
- GOTO(out, rc);
+ }
/* prepare dir striped objects */
rc = lod_prep_md_striped_create(env, dt, attr, lum, dof, th);
if (rc != 0) {
/* failed to create striping, let's reset
* config so that others don't get confused */
- lod_object_free_striping(env, lo);
+ lod_striping_free(env, lo);
GOTO(out, rc);
}
out:
}
/**
- * Implementation of dt_object_operations::do_declare_xattr_set.
+ * Append source stripes after target stripes for migrating directory. NB, we
+ * only need to declare this, the append is done inside lod_xattr_set_lmv().
*
- * Used with regular (non-striped) objects. Basically it
- * initializes the striping information and applies the
- * change to all the stripes.
+ * \param[in] env execution environment
+ * \param[in] dt target object
+ * \param[in] buf LMV buf which contains source stripe fids
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+static int lod_dir_declare_layout_add(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_tgt_descs *ltd = &lod->lod_mdt_descs;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct dt_object_format *dof = &info->lti_format;
+ struct lmv_mds_md_v1 *lmv = buf->lb_buf;
+ struct dt_object **stripe;
+ __u32 stripe_count = le32_to_cpu(lmv->lmv_stripe_count);
+ struct lu_fid *fid = &info->lti_fid;
+ struct lod_tgt_desc *tgt;
+ struct dt_object *dto;
+ struct dt_device *tgt_dt;
+ int type = LU_SEQ_RANGE_ANY;
+ struct dt_insert_rec *rec = &info->lti_dt_rec;
+ char *stripe_name = info->lti_key;
+ struct lu_name *sname;
+ struct linkea_data ldata = { NULL };
+ struct lu_buf linkea_buf;
+ __u32 idx;
+ int i;
+ int rc;
+
+ ENTRY;
+
+ if (le32_to_cpu(lmv->lmv_magic) != LMV_MAGIC_V1)
+ RETURN(-EINVAL);
+
+ if (stripe_count == 0)
+ RETURN(-EINVAL);
+
+ dof->dof_type = DFT_DIR;
+
+ OBD_ALLOC(stripe,
+ sizeof(*stripe) * (lo->ldo_dir_stripe_count + stripe_count));
+ if (stripe == NULL)
+ RETURN(-ENOMEM);
+
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++)
+ stripe[i] = lo->ldo_stripe[i];
+
+ for (i = 0; i < stripe_count; i++) {
+ fid_le_to_cpu(fid,
+ &lmv->lmv_stripe_fids[i]);
+ if (!fid_is_sane(fid))
+ continue;
+
+ rc = lod_fld_lookup(env, lod, fid, &idx, &type);
+ if (rc)
+ GOTO(out, rc);
+
+ if (idx == lod2lu_dev(lod)->ld_site->ld_seq_site->ss_node_id) {
+ tgt_dt = lod->lod_child;
+ } else {
+ tgt = LTD_TGT(ltd, idx);
+ if (tgt == NULL)
+ GOTO(out, rc = -ESTALE);
+ tgt_dt = tgt->ltd_tgt;
+ }
+
+ dto = dt_locate_at(env, tgt_dt, fid,
+ lo->ldo_obj.do_lu.lo_dev->ld_site->ls_top_dev,
+ NULL);
+ if (IS_ERR(dto))
+ GOTO(out, rc = PTR_ERR(dto));
+
+ stripe[i + lo->ldo_dir_stripe_count] = dto;
+
+ if (!dt_try_as_dir(env, dto))
+ GOTO(out, rc = -ENOTDIR);
+
+ rc = lod_sub_declare_ref_add(env, dto, th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = lod_sub_declare_insert(env, dto,
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = lod_sub_declare_insert(env, dto,
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)dotdot, th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = lod_sub_declare_xattr_set(env, dto, buf,
+ XATTR_NAME_LMV, 0, th);
+ if (rc)
+ GOTO(out, rc);
+
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%u",
+ PFID(lu_object_fid(&dto->do_lu)),
+ i + lo->ldo_dir_stripe_count);
+
+ sname = lod_name_get(env, stripe_name, strlen(stripe_name));
+ rc = linkea_links_new(&ldata, &info->lti_linkea_buf,
+ sname, lu_object_fid(&dt->do_lu));
+ if (rc)
+ GOTO(out, rc);
+
+ linkea_buf.lb_buf = ldata.ld_buf->lb_buf;
+ linkea_buf.lb_len = ldata.ld_leh->leh_len;
+ rc = lod_sub_declare_xattr_set(env, dto, &linkea_buf,
+ XATTR_NAME_LINK, 0, th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = lod_sub_declare_insert(env, next,
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)stripe_name,
+ th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = lod_sub_declare_ref_add(env, next, th);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ if (lo->ldo_stripe)
+ OBD_FREE(lo->ldo_stripe,
+ sizeof(*stripe) * lo->ldo_dir_stripes_allocated);
+ lo->ldo_stripe = stripe;
+ lo->ldo_dir_migrate_offset = lo->ldo_dir_stripe_count;
+ lo->ldo_dir_migrate_hash = le32_to_cpu(lmv->lmv_hash_type);
+ lo->ldo_dir_stripe_count += stripe_count;
+ lo->ldo_dir_stripes_allocated += stripe_count;
+ lo->ldo_dir_hash_type |= LMV_HASH_FLAG_MIGRATION;
+
+ RETURN(0);
+out:
+ i = lo->ldo_dir_stripe_count;
+ while (i < lo->ldo_dir_stripe_count + stripe_count && stripe[i])
+ dt_object_put(env, stripe[i++]);
+
+ OBD_FREE(stripe,
+ sizeof(*stripe) * (stripe_count + lo->ldo_dir_stripe_count));
+ RETURN(rc);
+}
+
+static int lod_dir_declare_layout_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lmv_user_md *lmu = buf->lb_buf;
+ __u32 final_stripe_count;
+ char *stripe_name = info->lti_key;
+ struct dt_object *dto;
+ int i;
+ int rc = 0;
+
+ if (!lmu)
+ return -EINVAL;
+
+ final_stripe_count = le32_to_cpu(lmu->lum_stripe_count);
+ if (final_stripe_count >= lo->ldo_dir_stripe_count)
+ return -EINVAL;
+
+ for (i = final_stripe_count; i < lo->ldo_dir_stripe_count; i++) {
+ dto = lo->ldo_stripe[i];
+ if (!dto)
+ continue;
+
+ if (!dt_try_as_dir(env, dto))
+ return -ENOTDIR;
+
+ rc = lod_sub_declare_delete(env, dto,
+ (const struct dt_key *)dot, th);
+ if (rc)
+ return rc;
+
+ rc = lod_sub_declare_ref_del(env, dto, th);
+ if (rc)
+ return rc;
+
+ rc = lod_sub_declare_delete(env, dto,
+ (const struct dt_key *)dotdot, th);
+ if (rc)
+ return rc;
+
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&dto->do_lu)), i);
+
+ rc = lod_sub_declare_delete(env, next,
+ (const struct dt_key *)stripe_name, th);
+ if (rc)
+ return rc;
+
+ rc = lod_sub_declare_ref_del(env, next, th);
+ if (rc)
+ return rc;
+ }
+
+ return 0;
+}
+
+/*
+ * delete stripes from dir master object, the lum_stripe_count in argument is
+ * the final stripe count, the stripes after that will be deleted, NB, they
+ * are not destroyed, but deleted from it's parent namespace, this function
+ * will be called in two places:
+ * 1. mdd_migrate_create() delete stripes from source, and append them to
+ * target.
+ * 2. mdd_dir_layout_shrink() delete stripes from source, and destroy them.
+ */
+static int lod_dir_layout_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lmv_user_md *lmu = buf->lb_buf;
+ __u32 final_stripe_count;
+ char *stripe_name = info->lti_key;
+ struct dt_object *dto;
+ int i;
+ int rc = 0;
+
+ ENTRY;
+
+ if (!lmu)
+ RETURN(-EINVAL);
+
+ final_stripe_count = le32_to_cpu(lmu->lum_stripe_count);
+ if (final_stripe_count >= lo->ldo_dir_stripe_count)
+ RETURN(-EINVAL);
+
+ for (i = final_stripe_count; i < lo->ldo_dir_stripe_count; i++) {
+ dto = lo->ldo_stripe[i];
+ if (!dto)
+ continue;
+
+ rc = lod_sub_delete(env, dto,
+ (const struct dt_key *)dotdot, th);
+ if (rc)
+ break;
+
+ snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
+ PFID(lu_object_fid(&dto->do_lu)), i);
+
+ rc = lod_sub_delete(env, next,
+ (const struct dt_key *)stripe_name, th);
+ if (rc)
+ break;
+
+ rc = lod_sub_ref_del(env, next, th);
+ if (rc)
+ break;
+ }
+
+ lod_striping_free(env, lod_dt_obj(dt));
+
+ RETURN(rc);
+}
+
+/**
+ * Implementation of dt_object_operations::do_declare_xattr_set.
+ *
+ * Used with regular (non-striped) objects. Basically it
+ * initializes the striping information and applies the
+ * change to all the stripes.
*
* \see dt_object_operations::do_declare_xattr_set() in the API description
* for details.
RETURN(0);
/* set xattr to each stripes, if needed */
- rc = lod_load_striping(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc != 0)
RETURN(rc);
RETURN(0);
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- LASSERT(lo->ldo_stripe[i]);
+ if (!lo->ldo_stripe[i])
+ continue;
+
+ if (!dt_object_exists(lo->ldo_stripe[i]))
+ continue;
rc = lod_sub_declare_xattr_set(env, lo->ldo_stripe[i],
buf, name, fl, th);
lod_obj_stripe_replace_parent_fid_cb(const struct lu_env *env,
struct lod_object *lo,
struct dt_object *dt, struct thandle *th,
- int stripe_idx,
+ int comp_idx, int stripe_idx,
struct lod_obj_stripe_cb_data *data)
{
struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *comp = &lo->ldo_comp_entries[comp_idx];
struct filter_fid *ff = &info->lti_ff;
struct lu_buf *buf = &info->lti_buf;
int rc;
buf->lb_buf = ff;
buf->lb_len = sizeof(*ff);
rc = dt_xattr_get(env, dt, buf, XATTR_NAME_FID);
- if (rc == -ENODATA)
- return 0;
-
- if (rc < 0)
+ if (rc < 0) {
+ if (rc == -ENODATA)
+ return 0;
return rc;
+ }
+
+ /*
+ * locd_buf is set if it's called by dir migration, which doesn't check
+ * pfid and comp id.
+ */
+ if (data->locd_buf) {
+ memset(ff, 0, sizeof(*ff));
+ ff->ff_parent = *(struct lu_fid *)data->locd_buf->lb_buf;
+ } else {
+ filter_fid_le_to_cpu(ff, ff, sizeof(*ff));
+
+ if (lu_fid_eq(lod_object_fid(lo), &ff->ff_parent) &&
+ ff->ff_layout.ol_comp_id == comp->llc_id)
+ return 0;
- ff->ff_parent = *lu_object_fid(&lo->ldo_obj.do_lu);
+ memset(ff, 0, sizeof(*ff));
+ ff->ff_parent = *lu_object_fid(&lo->ldo_obj.do_lu);
+ }
+
+ /* rewrite filter_fid */
ff->ff_parent.f_ver = stripe_idx;
- fid_cpu_to_le(&ff->ff_parent, &ff->ff_parent);
+ ff->ff_layout.ol_stripe_size = comp->llc_stripe_size;
+ ff->ff_layout.ol_stripe_count = comp->llc_stripe_count;
+ ff->ff_layout.ol_comp_id = comp->llc_id;
+ ff->ff_layout.ol_comp_start = comp->llc_extent.e_start;
+ ff->ff_layout.ol_comp_end = comp->llc_extent.e_end;
+ filter_fid_cpu_to_le(ff, ff, sizeof(*ff));
+
if (data->locd_declare)
rc = lod_sub_declare_xattr_set(env, dt, buf, XATTR_NAME_FID,
LU_XATTR_REPLACE, th);
*/
static int lod_replace_parent_fid(const struct lu_env *env,
struct dt_object *dt,
+ const struct lu_buf *buf,
struct thandle *th, bool declare)
{
struct lod_object *lo = lod_dt_obj(dt);
struct lod_thread_info *info = lod_env_info(env);
- struct lu_buf *buf = &info->lti_buf;
struct filter_fid *ff;
- struct lod_obj_stripe_cb_data data;
+ struct lod_obj_stripe_cb_data data = { { 0 } };
int rc;
ENTRY;
LASSERT(S_ISREG(dt->do_lu.lo_header->loh_attr));
/* set xattr to each stripes, if needed */
- rc = lod_load_striping(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc != 0)
RETURN(rc);
RETURN(rc);
}
- buf->lb_buf = info->lti_ea_store;
- buf->lb_len = info->lti_ea_store_size;
-
data.locd_declare = declare;
- rc = lod_obj_for_each_stripe(env, lo, th,
- lod_obj_stripe_replace_parent_fid_cb,
- &data);
+ data.locd_stripe_cb = lod_obj_stripe_replace_parent_fid_cb;
+ data.locd_buf = buf;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
RETURN(rc);
}
else if (lod_comp_inited(entry))
return entry->llc_stripe_count;
else if ((__u16)-1 == entry->llc_stripe_count)
- return lod->lod_desc.ld_tgt_count;
+ return lod->lod_ost_count;
else
- return lod_get_stripe_count(lod, lo, entry->llc_stripe_count);
+ return lod_get_stripe_count(lod, lo,
+ entry->llc_stripe_count, false);
}
static int lod_comp_md_size(struct lod_object *lo, bool is_dir)
int magic, size = 0, i;
struct lod_layout_component *comp_entries;
__u16 comp_cnt;
- bool is_composite;
+ bool is_composite, is_foreign = false;
if (is_dir) {
comp_cnt = lo->ldo_def_striping->lds_def_comp_cnt;
comp_cnt = lo->ldo_comp_cnt;
comp_entries = lo->ldo_comp_entries;
is_composite = lo->ldo_is_composite;
+ is_foreign = lo->ldo_is_foreign;
}
+ if (is_foreign)
+ return lo->ldo_foreign_lov_size;
LASSERT(comp_cnt != 0 && comp_entries != NULL);
if (is_composite) {
struct thandle *th)
{
struct lod_thread_info *info = lod_env_info(env);
- struct lod_layout_component *comp_array, *lod_comp;
- struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
+ struct lod_layout_component *comp_array, *lod_comp, *old_array;
+ struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
struct dt_object *next = dt_object_child(dt);
- struct lov_desc *desc = &d->lod_desc;
- struct lod_object *lo = lod_dt_obj(dt);
- struct lov_user_md_v3 *v3;
- struct lov_comp_md_v1 *comp_v1 = buf->lb_buf;
- __u32 magic;
- int i, rc, array_cnt;
+ struct lov_desc *desc = &d->lod_ost_descs.ltd_lov_desc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lov_user_md_v3 *v3;
+ struct lov_comp_md_v1 *comp_v1 = buf->lb_buf;
+ __u32 magic;
+ int i, rc, array_cnt, old_array_cnt;
ENTRY;
LASSERT(lo->ldo_is_composite);
+ if (lo->ldo_flr_state != LCM_FL_NONE)
+ RETURN(-EBUSY);
+
rc = lod_verify_striping(d, lo, buf, false);
if (rc != 0)
RETURN(rc);
lod_comp->llc_flags = comp_v1->lcm_entries[i].lcme_flags;
lod_comp->llc_stripe_count = v1->lmm_stripe_count;
- if (!lod_comp->llc_stripe_count ||
- lod_comp->llc_stripe_count == (__u16)-1)
- lod_comp->llc_stripe_count =
- desc->ld_default_stripe_count;
lod_comp->llc_stripe_size = v1->lmm_stripe_size;
- if (!lod_comp->llc_stripe_size)
- lod_comp->llc_stripe_size =
- desc->ld_default_stripe_size;
+ lod_adjust_stripe_info(lod_comp, desc, 0);
if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
v3 = (struct lov_user_md_v3 *) v1;
}
}
- OBD_FREE(lo->ldo_comp_entries, sizeof(*lod_comp) * lo->ldo_comp_cnt);
+ old_array = lo->ldo_comp_entries;
+ old_array_cnt = lo->ldo_comp_cnt;
+
lo->ldo_comp_entries = comp_array;
lo->ldo_comp_cnt = array_cnt;
info->lti_buf.lb_len = lod_comp_md_size(lo, false);
rc = lod_sub_declare_xattr_set(env, next, &info->lti_buf,
XATTR_NAME_LOV, 0, th);
- if (rc)
+ if (rc) {
+ lo->ldo_comp_entries = old_array;
+ lo->ldo_comp_cnt = old_array_cnt;
GOTO(error, rc);
+ }
+
+ OBD_FREE(old_array, sizeof(*lod_comp) * old_array_cnt);
+
+ LASSERT(lo->ldo_mirror_count == 1);
+ lo->ldo_mirrors[0].lme_end = array_cnt - 1;
RETURN(0);
}
/**
+ * lod_last_non_stale_mirror() - Check if a mirror is the last non-stale mirror.
+ * @mirror_id: Mirror id to be checked.
+ * @lo: LOD object.
+ *
+ * This function checks if a mirror with specified @mirror_id is the last
+ * non-stale mirror of a LOD object @lo.
+ *
+ * Return: true or false.
+ */
+static inline
+bool lod_last_non_stale_mirror(__u16 mirror_id, struct lod_object *lo)
+{
+ struct lod_layout_component *lod_comp;
+ bool has_stale_flag;
+ int i;
+
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (lo->ldo_mirrors[i].lme_id == mirror_id ||
+ lo->ldo_mirrors[i].lme_stale)
+ continue;
+
+ has_stale_flag = false;
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (lod_comp->llc_flags & LCME_FL_STALE) {
+ has_stale_flag = true;
+ break;
+ }
+ }
+ if (!has_stale_flag)
+ return false;
+ }
+
+ return true;
+}
+
+/**
* Declare component set. The xattr is name XATTR_LUSTRE_LOV.set.$field,
* the '$field' can only be 'flags' now. The xattr value is binary
* lov_comp_md_v1 which contains the component ID(s) and the value of
struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
struct lod_object *lo = lod_dt_obj(dt);
struct lov_comp_md_v1 *comp_v1 = buf->lb_buf;
- __u32 magic, id;
+ __u32 magic;
int i, j, rc;
bool changed = false;
ENTRY;
}
for (i = 0; i < comp_v1->lcm_entry_count; i++) {
- id = comp_v1->lcm_entries[i].lcme_id;
+ __u32 id = comp_v1->lcm_entries[i].lcme_id;
+ __u32 flags = comp_v1->lcm_entries[i].lcme_flags;
+ __u32 mirror_flag = flags & LCME_MIRROR_FLAGS;
+ __u16 mirror_id = mirror_id_of(id);
+ bool neg = flags & LCME_FL_NEG;
+
+ if (flags & LCME_FL_INIT) {
+ if (changed)
+ lod_striping_free(env, lo);
+ RETURN(-EINVAL);
+ }
+ flags &= ~(LCME_MIRROR_FLAGS | LCME_FL_NEG);
for (j = 0; j < lo->ldo_comp_cnt; j++) {
lod_comp = &lo->ldo_comp_entries[j];
- if (id == lod_comp->llc_id || id == LCME_ID_ALL) {
- lod_comp->llc_flags =
- comp_v1->lcm_entries[i].lcme_flags;
- changed = true;
+
+ /* lfs only put one flag in each entry */
+ if ((flags && id != lod_comp->llc_id) ||
+ (mirror_flag && mirror_id !=
+ mirror_id_of(lod_comp->llc_id)))
+ continue;
+
+ if (neg) {
+ if (flags)
+ lod_comp->llc_flags &= ~flags;
+ if (mirror_flag)
+ lod_comp->llc_flags &= ~mirror_flag;
+ } else {
+ if (flags) {
+ if ((flags & LCME_FL_STALE) &&
+ lod_last_non_stale_mirror(mirror_id,
+ lo))
+ RETURN(-EUCLEAN);
+ lod_comp->llc_flags |= flags;
+ }
+ if (mirror_flag) {
+ lod_comp->llc_flags |= mirror_flag;
+ if (mirror_flag & LCME_FL_NOSYNC)
+ lod_comp->llc_timestamp =
+ ktime_get_real_seconds();
+ }
}
+ changed = true;
}
}
lod_obj_inc_layout_gen(lo);
info->lti_buf.lb_len = lod_comp_md_size(lo, false);
- rc = lod_sub_declare_xattr_set(env, dt, &info->lti_buf,
- XATTR_NAME_LOV, 0, th);
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt), &info->lti_buf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE, th);
RETURN(rc);
}
LASSERT(lo->ldo_is_composite);
+ if (lo->ldo_flr_state != LCM_FL_NONE)
+ RETURN(-EBUSY);
+
magic = comp_v1->lcm_magic;
if (magic == __swab32(LOV_USER_MAGIC_COMP_V1)) {
lustre_swab_lov_comp_md_v1(comp_v1);
RETURN(-EINVAL);
}
+ if (id == LCME_ID_INVAL && !flags) {
+ CDEBUG(D_LAYOUT, "%s: no id or flags specified.\n",
+ lod2obd(d)->obd_name);
+ RETURN(-EINVAL);
+ }
+
if (flags & LCME_FL_NEG) {
neg_flags = flags & ~LCME_FL_NEG;
flags = 0;
{
struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
struct lod_object *lo = lod_dt_obj(dt);
- struct dt_object *next = dt_object_child(&lo->ldo_obj);
char *op;
int rc, len = strlen(XATTR_LUSTRE_LOV);
ENTRY;
}
len++;
- dt_write_lock(env, next, 0);
- rc = lod_load_striping_locked(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc)
GOTO(unlock, rc);
}
unlock:
if (rc)
- lod_object_free_striping(env, lo);
- dt_write_unlock(env, next);
+ lod_striping_free(env, lo);
RETURN(rc);
}
/**
- * Merge layouts to form a mirrored file.
+ * Convert a plain file lov_mds_md to a composite layout.
+ *
+ * \param[in,out] info the thread info::lti_ea_store buffer contains little
+ * endian plain file layout
+ *
+ * \retval 0 on success, <0 on failure
*/
-static int lod_declare_layout_merge(const struct lu_env *env,
- struct dt_object *dt, const struct lu_buf *mbuf,
- struct thandle *th)
+static int lod_layout_convert(struct lod_thread_info *info)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lu_buf *buf = &info->lti_buf;
- struct lod_object *lo = lod_dt_obj(dt);
- struct lov_comp_md_v1 *lcm;
- struct lov_comp_md_v1 *cur_lcm;
+ struct lov_mds_md *lmm = info->lti_ea_store;
+ struct lov_mds_md *lmm_save;
+ struct lov_comp_md_v1 *lcm;
+ struct lov_comp_md_entry_v1 *lcme;
+ size_t size;
+ __u32 blob_size;
+ int rc = 0;
+ ENTRY;
+
+ /* realloc buffer to a composite layout which contains one component */
+ blob_size = lov_mds_md_size(le16_to_cpu(lmm->lmm_stripe_count),
+ le32_to_cpu(lmm->lmm_magic));
+ size = sizeof(*lcm) + sizeof(*lcme) + blob_size;
+
+ OBD_ALLOC_LARGE(lmm_save, blob_size);
+ if (!lmm_save)
+ GOTO(out, rc = -ENOMEM);
+
+ memcpy(lmm_save, lmm, blob_size);
+
+ if (info->lti_ea_store_size < size) {
+ rc = lod_ea_store_resize(info, size);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ lcm = info->lti_ea_store;
+ lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
+ lcm->lcm_size = cpu_to_le32(size);
+ lcm->lcm_layout_gen = cpu_to_le32(le16_to_cpu(
+ lmm_save->lmm_layout_gen));
+ lcm->lcm_flags = cpu_to_le16(LCM_FL_NONE);
+ lcm->lcm_entry_count = cpu_to_le16(1);
+ lcm->lcm_mirror_count = 0;
+
+ lcme = &lcm->lcm_entries[0];
+ lcme->lcme_flags = cpu_to_le32(LCME_FL_INIT);
+ lcme->lcme_extent.e_start = 0;
+ lcme->lcme_extent.e_end = cpu_to_le64(OBD_OBJECT_EOF);
+ lcme->lcme_offset = cpu_to_le32(sizeof(*lcm) + sizeof(*lcme));
+ lcme->lcme_size = cpu_to_le32(blob_size);
+
+ memcpy((char *)lcm + lcme->lcme_offset, (char *)lmm_save, blob_size);
+
+ EXIT;
+out:
+ if (lmm_save)
+ OBD_FREE_LARGE(lmm_save, blob_size);
+ return rc;
+}
+
+/**
+ * Merge layouts to form a mirrored file.
+ */
+static int lod_declare_layout_merge(const struct lu_env *env,
+ struct dt_object *dt, const struct lu_buf *mbuf,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_buf *buf = &info->lti_buf;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lov_comp_md_v1 *lcm;
+ struct lov_comp_md_v1 *cur_lcm;
struct lov_comp_md_v1 *merge_lcm;
struct lov_comp_md_entry_v1 *lcme;
+ struct lov_mds_md_v1 *lmm;
size_t size = 0;
size_t offset;
__u16 cur_entry_count;
__u16 mirror_id = 0;
__u32 mirror_count;
int rc, i;
+ bool merge_has_dom;
+
ENTRY;
merge_lcm = mbuf->lb_buf;
RETURN(rc ? : -ENODATA);
cur_lcm = info->lti_ea_store;
- if (le32_to_cpu(cur_lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
- RETURN(-EINVAL);
+ switch (le32_to_cpu(cur_lcm->lcm_magic)) {
+ case LOV_MAGIC_V1:
+ case LOV_MAGIC_V3:
+ rc = lod_layout_convert(info);
+ break;
+ case LOV_MAGIC_COMP_V1:
+ case LOV_MAGIC_SEL:
+ rc = 0;
+ break;
+ default:
+ rc = -EINVAL;
+ }
+ if (rc)
+ RETURN(rc);
+ /* info->lti_ea_store could be reallocated in lod_layout_convert() */
+ cur_lcm = info->lti_ea_store;
cur_entry_count = le16_to_cpu(cur_lcm->lcm_entry_count);
/* 'lcm_mirror_count + 1' is the current # of mirrors the file has */
offset += le32_to_cpu(lcme->lcme_size);
- if (mirror_count == 1) {
- /* new mirrored file, create new mirror ID */
+ if (mirror_count == 1 &&
+ mirror_id_of(le32_to_cpu(lcme->lcme_id)) == 0) {
+ /* Add mirror from a non-flr file, create new mirror ID.
+ * Otherwise, keep existing mirror's component ID, used
+ * for mirror extension.
+ */
id = pflr_id(1, i + 1);
lcme->lcme_id = cpu_to_le32(id);
}
}
mirror_id = mirror_id_of(id) + 1;
+
+ /* check if first entry in new layout is DOM */
+ lmm = (struct lov_mds_md_v1 *)((char *)merge_lcm +
+ merge_lcm->lcm_entries[0].lcme_offset);
+ merge_has_dom = lov_pattern(le32_to_cpu(lmm->lmm_pattern)) ==
+ LOV_PATTERN_MDT;
+
for (i = 0; i < merge_entry_count; i++) {
struct lov_comp_md_entry_v1 *merge_lcme;
*lcme = *merge_lcme;
lcme->lcme_offset = cpu_to_le32(offset);
+ if (merge_has_dom && i == 0)
+ lcme->lcme_flags |= cpu_to_le32(LCME_FL_STALE);
id = pflr_id(mirror_id, i + 1);
lcme->lcme_id = cpu_to_le32(id);
lcm->lcm_size = cpu_to_le32(size);
lcm->lcm_entry_count = cpu_to_le16(cur_entry_count + merge_entry_count);
lcm->lcm_mirror_count = cpu_to_le16(mirror_count);
- if ((le16_to_cpu(lcm->lcm_flags) & LCM_FL_FLR_MASK) == LCM_FL_NOT_FLR)
+ if ((le16_to_cpu(lcm->lcm_flags) & LCM_FL_FLR_MASK) == LCM_FL_NONE)
lcm->lcm_flags = cpu_to_le32(LCM_FL_RDONLY);
- LASSERT(dt_write_locked(env, dt_object_child(dt)));
- lod_object_free_striping(env, lo);
- rc = lod_parse_striping(env, lo, buf);
+ rc = lod_striping_reload(env, lo, buf);
if (rc)
GOTO(out, rc);
}
/**
+ * Split layouts, just set the LOVEA with the layout from mbuf.
+ */
+static int lod_declare_layout_split(const struct lu_env *env,
+ struct dt_object *dt, const struct lu_buf *mbuf,
+ struct thandle *th)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lov_comp_md_v1 *lcm = mbuf->lb_buf;
+ int rc;
+ ENTRY;
+
+ lod_obj_inc_layout_gen(lo);
+ lcm->lcm_layout_gen = cpu_to_le32(lo->ldo_layout_gen);
+
+ rc = lod_striping_reload(env, lo, mbuf);
+ if (rc)
+ RETURN(rc);
+
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt), mbuf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE, th);
+ RETURN(rc);
+}
+
+/**
* Implementation of dt_object_operations::do_declare_xattr_set.
*
* \see dt_object_operations::do_declare_xattr_set() in the API description
mode = dt->do_lu.lo_header->loh_attr & S_IFMT;
if ((S_ISREG(mode) || mode == 0) &&
- !(fl & (LU_XATTR_REPLACE | LU_XATTR_MERGE)) &&
+ !(fl & (LU_XATTR_REPLACE | LU_XATTR_MERGE | LU_XATTR_SPLIT)) &&
(strcmp(name, XATTR_NAME_LOV) == 0 ||
strcmp(name, XATTR_LUSTRE_LOV) == 0)) {
/*
LASSERT(strcmp(name, XATTR_NAME_LOV) == 0 ||
strcmp(name, XATTR_LUSTRE_LOV) == 0);
rc = lod_declare_layout_merge(env, dt, buf, th);
+ } else if (fl & LU_XATTR_SPLIT) {
+ LASSERT(strcmp(name, XATTR_NAME_LOV) == 0 ||
+ strcmp(name, XATTR_LUSTRE_LOV) == 0);
+ rc = lod_declare_layout_split(env, dt, buf, th);
} else if (S_ISREG(mode) &&
strlen(name) > strlen(XATTR_LUSTRE_LOV) + 1 &&
strncmp(name, XATTR_LUSTRE_LOV,
RETURN(-ENOENT);
rc = lod_declare_modify_layout(env, dt, name, buf, th);
+ } else if (strncmp(name, XATTR_NAME_LMV, strlen(XATTR_NAME_LMV)) == 0 &&
+ strlen(name) > strlen(XATTR_NAME_LMV) + 1) {
+ const char *op = name + strlen(XATTR_NAME_LMV) + 1;
+
+ rc = -ENOTSUPP;
+ if (strcmp(op, "add") == 0)
+ rc = lod_dir_declare_layout_add(env, dt, buf, th);
+ else if (strcmp(op, "del") == 0)
+ rc = lod_dir_declare_layout_delete(env, dt, buf, th);
+ else if (strcmp(op, "set") == 0)
+ rc = lod_sub_declare_xattr_set(env, next, buf,
+ XATTR_NAME_LMV, fl, th);
+
+ RETURN(rc);
} else if (S_ISDIR(mode)) {
rc = lod_dir_declare_xattr_set(env, dt, buf, name, fl, th);
} else if (strcmp(name, XATTR_NAME_FID) == 0) {
- rc = lod_replace_parent_fid(env, dt, th, true);
+ rc = lod_replace_parent_fid(env, dt, buf, th, true);
} else {
rc = lod_sub_declare_xattr_set(env, next, buf, name, fl, th);
}
RETURN(0);
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- LASSERT(lo->ldo_stripe[i]);
+ if (!lo->ldo_stripe[i])
+ continue;
+
+ if (!dt_object_exists(lo->ldo_stripe[i]))
+ continue;
rc = lod_sub_xattr_set(env, lo->ldo_stripe[i], buf, name,
fl, th);
lum = buf->lb_buf;
switch (lum->lmm_magic) {
+ case LOV_USER_MAGIC_SPECIFIC:
case LOV_USER_MAGIC_V3:
v3 = buf->lb_buf;
if (v3->lmm_pool_name[0] != '\0')
pool_name);
break;
case LOV_USER_MAGIC_COMP_V1:
+ {
+ struct lov_comp_md_v1 *lcm = (struct lov_comp_md_v1 *)lum;
+ struct lov_comp_md_entry_v1 *lcme;
+ int i, comp_cnt;
+
+ comp_cnt = le16_to_cpu(lcm->lcm_entry_count);
+ for (i = 0; i < comp_cnt; i++) {
+ lcme = &lcm->lcm_entries[i];
+ if (lcme->lcme_flags & cpu_to_le32(LCME_FL_EXTENSION)) {
+ lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_SEL);
+ break;
+ }
+ }
+
is_del = false;
break;
+ }
default:
CERROR("Invalid magic %x\n", lum->lmm_magic);
RETURN(-EINVAL);
const char *name, int fl,
struct thandle *th)
{
- struct lmv_user_md_v1 *lum;
- int rc;
+ struct lmv_user_md_v1 *lum;
+ int rc;
+
ENTRY;
LASSERT(buf != NULL && buf->lb_buf != NULL);
lum = buf->lb_buf;
- CDEBUG(D_OTHER, "set default stripe_count # %u stripe_offset %d\n",
+ CDEBUG(D_INFO,
+ "set default stripe_count # %u stripe_offset %d hash %u\n",
le32_to_cpu(lum->lum_stripe_count),
- (int)le32_to_cpu(lum->lum_stripe_offset));
+ (int)le32_to_cpu(lum->lum_stripe_offset),
+ le32_to_cpu(lum->lum_hash_type));
if (LMVEA_DELETE_VALUES((le32_to_cpu(lum->lum_stripe_count)),
le32_to_cpu(lum->lum_stripe_offset)) &&
- le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC) {
+ le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC) {
rc = lod_xattr_del_internal(env, dt, name, th);
if (rc == -ENODATA)
rc = 0;
/* The stripes are supposed to be allocated in declare phase,
* if there are no stripes being allocated, it will skip */
- if (lo->ldo_dir_stripe_count == 0)
+ if (lo->ldo_dir_stripe_count == 0) {
+ if (lo->ldo_dir_is_foreign) {
+ rc = lod_sub_xattr_set(env, dt_object_child(dt), buf,
+ XATTR_NAME_LMV, fl, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
RETURN(0);
+ }
rc = dt_attr_get(env, dt_object_child(dt), attr);
if (rc != 0)
rec->rec_type = S_IFDIR;
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- struct dt_object *dto;
- char *stripe_name = info->lti_key;
- struct lu_name *sname;
- struct linkea_data ldata = { NULL };
- struct lu_buf linkea_buf;
+ struct dt_object *dto = lo->ldo_stripe[i];
+ char *stripe_name = info->lti_key;
+ struct lu_name *sname;
+ struct linkea_data ldata = { NULL };
+ struct lu_buf linkea_buf;
+
+ /* OBD_FAIL_MDS_STRIPE_FID may leave stripe uninitialized */
+ if (!dto)
+ continue;
- dto = lo->ldo_stripe[i];
+ /* fail a remote stripe creation */
+ if (i && OBD_FAIL_CHECK(OBD_FAIL_MDS_STRIPE_CREATE))
+ continue;
- dt_write_lock(env, dto, MOR_TGT_CHILD);
- rc = lod_sub_create(env, dto, attr, NULL, dof, th);
- if (rc != 0) {
- dt_write_unlock(env, dto);
- GOTO(out, rc);
- }
+ /* if it's source stripe of migrating directory, don't create */
+ if (!((lo->ldo_dir_hash_type & LMV_HASH_FLAG_MIGRATION) &&
+ i >= lo->ldo_dir_migrate_offset)) {
+ dt_write_lock(env, dto, DT_TGT_CHILD);
+ rc = lod_sub_create(env, dto, attr, NULL, dof, th);
+ if (rc != 0) {
+ dt_write_unlock(env, dto);
+ GOTO(out, rc);
+ }
- rc = lod_sub_ref_add(env, dto, th);
- dt_write_unlock(env, dto);
- if (rc != 0)
- GOTO(out, rc);
+ rc = lod_sub_ref_add(env, dto, th);
+ dt_write_unlock(env, dto);
+ if (rc != 0)
+ GOTO(out, rc);
- rec->rec_fid = lu_object_fid(&dto->do_lu);
- rc = lod_sub_insert(env, dto, (const struct dt_rec *)rec,
- (const struct dt_key *)dot, th, 0);
- if (rc != 0)
- GOTO(out, rc);
+ rec->rec_fid = lu_object_fid(&dto->do_lu);
+ rc = lod_sub_insert(env, dto,
+ (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
rec->rec_fid = lu_object_fid(&dt->do_lu);
rc = lod_sub_insert(env, dto, (struct dt_rec *)rec,
- (const struct dt_key *)dotdot, th, 0);
+ (const struct dt_key *)dotdot, th);
if (rc != 0)
GOTO(out, rc);
rec->rec_fid = lu_object_fid(&dto->do_lu);
rc = lod_sub_insert(env, dt_object_child(dt),
(const struct dt_rec *)rec,
- (const struct dt_key *)stripe_name, th, 0);
+ (const struct dt_key *)stripe_name, th);
if (rc != 0)
GOTO(out, rc);
* \param[in] env execution environment
* \param[in] dt object
* \param[in] attr attributes the stripes will be created with
+ * \param[in] lmu lmv_user_md if MDT indices are specified
* \param[in] dof format of stripes (see OSD API description)
* \param[in] th transaction handle
* \param[in] declare where to call "declare" or "execute" methods
static int lod_dir_striping_create_internal(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
+ const struct lu_buf *lmu,
struct dt_object_format *dof,
struct thandle *th,
bool declare)
if (!LMVEA_DELETE_VALUES(lo->ldo_dir_stripe_count,
lo->ldo_dir_stripe_offset)) {
- struct lmv_user_md_v1 *v1 = info->lti_ea_store;
- int stripe_count = lo->ldo_dir_stripe_count;
+ if (!lmu) {
+ struct lmv_user_md_v1 *v1 = info->lti_ea_store;
+ int stripe_count = lo->ldo_dir_stripe_count;
- if (info->lti_ea_store_size < sizeof(*v1)) {
- rc = lod_ea_store_resize(info, sizeof(*v1));
- if (rc != 0)
- RETURN(rc);
- v1 = info->lti_ea_store;
- }
+ if (info->lti_ea_store_size < sizeof(*v1)) {
+ rc = lod_ea_store_resize(info, sizeof(*v1));
+ if (rc != 0)
+ RETURN(rc);
+ v1 = info->lti_ea_store;
+ }
- memset(v1, 0, sizeof(*v1));
- v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
- v1->lum_stripe_count = cpu_to_le32(stripe_count);
- v1->lum_stripe_offset =
- cpu_to_le32(lo->ldo_dir_stripe_offset);
+ memset(v1, 0, sizeof(*v1));
+ v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
+ v1->lum_stripe_count = cpu_to_le32(stripe_count);
+ v1->lum_stripe_offset =
+ cpu_to_le32(lo->ldo_dir_stripe_offset);
- info->lti_buf.lb_buf = v1;
- info->lti_buf.lb_len = sizeof(*v1);
+ info->lti_buf.lb_buf = v1;
+ info->lti_buf.lb_len = sizeof(*v1);
+ lmu = &info->lti_buf;
+ }
if (declare)
- rc = lod_declare_xattr_set_lmv(env, dt, attr,
- &info->lti_buf, dof, th);
+ rc = lod_declare_xattr_set_lmv(env, dt, attr, lmu, dof,
+ th);
else
- rc = lod_xattr_set_lmv(env, dt, &info->lti_buf,
- XATTR_NAME_LMV, 0, th);
+ rc = lod_xattr_set_lmv(env, dt, lmu, XATTR_NAME_LMV, 0,
+ th);
if (rc != 0)
RETURN(rc);
+ } else {
+ /* foreign LMV EA case */
+ if (lmu) {
+ struct lmv_foreign_md *lfm = lmu->lb_buf;
+
+ if (lfm->lfm_magic == LMV_MAGIC_FOREIGN) {
+ rc = lod_declare_xattr_set_lmv(env, dt, attr,
+ lmu, dof, th);
+ }
+ } else {
+ if (lo->ldo_dir_is_foreign) {
+ LASSERT(lo->ldo_foreign_lmv != NULL &&
+ lo->ldo_foreign_lmv_size > 0);
+ info->lti_buf.lb_buf = lo->ldo_foreign_lmv;
+ info->lti_buf.lb_len = lo->ldo_foreign_lmv_size;
+ lmu = &info->lti_buf;
+ rc = lod_xattr_set_lmv(env, dt, lmu,
+ XATTR_NAME_LMV, 0, th);
+ }
+ }
}
/* Transfer default LMV striping from the parent */
if (lds != NULL && lds->lds_dir_def_striping_set &&
- !LMVEA_DELETE_VALUES(lds->lds_dir_def_stripe_count,
- lds->lds_dir_def_stripe_offset)) {
+ !(LMVEA_DELETE_VALUES(lds->lds_dir_def_stripe_count,
+ lds->lds_dir_def_stripe_offset) &&
+ le32_to_cpu(lds->lds_dir_def_hash_type) !=
+ LMV_HASH_TYPE_UNKNOWN)) {
struct lmv_user_md_v1 *v1 = info->lti_ea_store;
if (info->lti_ea_store_size < sizeof(*v1)) {
static int lod_declare_dir_striping_create(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
+ struct lu_buf *lmu,
struct dt_object_format *dof,
struct thandle *th)
{
- return lod_dir_striping_create_internal(env, dt, attr, dof, th, true);
+ return lod_dir_striping_create_internal(env, dt, attr, lmu, dof, th,
+ true);
}
static int lod_dir_striping_create(const struct lu_env *env,
struct dt_object_format *dof,
struct thandle *th)
{
- return lod_dir_striping_create_internal(env, dt, attr, dof, th, false);
+ return lod_dir_striping_create_internal(env, dt, attr, NULL, dof, th,
+ false);
}
/**
LASSERT(lo);
- if (lo->ldo_comp_cnt == 0) {
- lod_object_free_striping(env, lo);
+ if (lo->ldo_comp_cnt == 0 && !lo->ldo_is_foreign) {
+ lod_striping_free(env, lo);
rc = lod_sub_xattr_del(env, next, XATTR_NAME_LOV, th);
RETURN(rc);
}
RETURN(rc);
}
+static __u32 lod_gen_component_id(struct lod_object *lo,
+ int mirror_id, int comp_idx);
+
/**
- * Delete layout component(s)
+ * Repeat an existing component
+ *
+ * Creates a new layout by replicating an existing component. Uses striping
+ * policy from previous component as a template for the striping for the new
+ * new component.
+ *
+ * New component starts with zero length, will be extended (or removed) before
+ * returning layout to client.
+ *
+ * NB: Reallocates layout components array (lo->ldo_comp_entries), invalidating
+ * any pre-existing pointers to components. Handle with care.
*
* \param[in] env execution environment for this thread
- * \param[in] dt object
- * \param[in] th transaction handle
+ * \param[in,out] lo object to update the layout of
+ * \param[in] index index of component to copy
*
* \retval 0 on success
- * \retval negative error number on failure
+ * \retval negative errno on error
*/
-static int lod_layout_del(const struct lu_env *env, struct dt_object *dt,
- struct thandle *th)
+static int lod_layout_repeat_comp(const struct lu_env *env,
+ struct lod_object *lo, int index)
{
- struct lod_layout_component *lod_comp;
- struct lod_object *lo = lod_dt_obj(dt);
- struct dt_object *next = dt_object_child(dt);
- struct lu_attr *attr = &lod_env_info(env)->lti_attr;
- int rc, i, j, left;
+ struct lod_layout_component *lod_comp;
+ struct lod_layout_component *new_comp = NULL;
+ struct lod_layout_component *comp_array;
+ int rc = 0, i, new_cnt = lo->ldo_comp_cnt + 1;
+ __u16 mirror_id;
+ int offset = 0;
+ ENTRY;
+
+ lod_comp = &lo->ldo_comp_entries[index];
+ LASSERT(lod_comp_inited(lod_comp) && lod_comp->llc_id != LCME_ID_INVAL);
+
+ CDEBUG(D_LAYOUT, "repeating component %d\n", index);
+
+ OBD_ALLOC(comp_array, sizeof(*comp_array) * new_cnt);
+ if (comp_array == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ memcpy(&comp_array[i + offset], &lo->ldo_comp_entries[i],
+ sizeof(*comp_array));
+
+ /* Duplicate this component in to the next slot */
+ if (i == index) {
+ new_comp = &comp_array[i + 1];
+ memcpy(&comp_array[i + 1], &lo->ldo_comp_entries[i],
+ sizeof(*comp_array));
+ /* We must now skip this new component when copying */
+ offset = 1;
+ }
+ }
+
+ /* Set up copied component */
+ new_comp->llc_flags &= ~LCME_FL_INIT;
+ new_comp->llc_stripe = NULL;
+ new_comp->llc_stripes_allocated = 0;
+ new_comp->llc_stripe_offset = LOV_OFFSET_DEFAULT;
+ /* for uninstantiated components, layout gen stores default stripe
+ * offset */
+ new_comp->llc_layout_gen = lod_comp->llc_stripe_offset;
+ /* This makes the repeated component zero-length, placed at the end of
+ * the preceding component */
+ new_comp->llc_extent.e_start = new_comp->llc_extent.e_end;
+ new_comp->llc_timestamp = lod_comp->llc_timestamp;
+ new_comp->llc_pool = NULL;
+
+ rc = lod_set_pool(&new_comp->llc_pool, lod_comp->llc_pool);
+ if (rc)
+ GOTO(out, rc);
+
+ if (new_comp->llc_ostlist.op_array) {
+ __u32 *op_array = NULL;
+
+ OBD_ALLOC(op_array, new_comp->llc_ostlist.op_size);
+ if (!op_array)
+ GOTO(out, rc = -ENOMEM);
+ memcpy(op_array, &new_comp->llc_ostlist.op_array,
+ new_comp->llc_ostlist.op_size);
+ new_comp->llc_ostlist.op_array = op_array;
+ }
+
+ OBD_FREE(lo->ldo_comp_entries,
+ sizeof(*comp_array) * lo->ldo_comp_cnt);
+ lo->ldo_comp_entries = comp_array;
+ lo->ldo_comp_cnt = new_cnt;
+
+ /* Generate an id for the new component */
+ mirror_id = mirror_id_of(new_comp->llc_id);
+ new_comp->llc_id = LCME_ID_INVAL;
+ new_comp->llc_id = lod_gen_component_id(lo, mirror_id, index + 1);
+ if (new_comp->llc_id == LCME_ID_INVAL)
+ GOTO(out, rc = -ERANGE);
+
+ EXIT;
+out:
+ if (rc)
+ OBD_FREE(comp_array, sizeof(*comp_array) * new_cnt);
+
+ return rc;
+}
+
+static int lod_layout_data_init(struct lod_thread_info *info, __u32 comp_cnt)
+{
+ ENTRY;
+
+ /* clear memory region that will be used for layout change */
+ memset(&info->lti_layout_attr, 0, sizeof(struct lu_attr));
+ info->lti_count = 0;
+
+ if (info->lti_comp_size >= comp_cnt)
+ RETURN(0);
+
+ if (info->lti_comp_size > 0) {
+ OBD_FREE(info->lti_comp_idx,
+ info->lti_comp_size * sizeof(__u32));
+ info->lti_comp_size = 0;
+ }
+
+ OBD_ALLOC(info->lti_comp_idx, comp_cnt * sizeof(__u32));
+ if (!info->lti_comp_idx)
+ RETURN(-ENOMEM);
+
+ info->lti_comp_size = comp_cnt;
+ RETURN(0);
+}
+
+/**
+ * Prepare new layout minus deleted components
+ *
+ * Removes components marked for deletion (LCME_ID_INVAL) by copying to a new
+ * layout and skipping those components. Removes stripe objects if any exist.
+ *
+ * NB:
+ * Reallocates layout components array (lo->ldo_comp_entries), invalidating
+ * any pre-existing pointers to components.
+ *
+ * Caller is responsible for updating mirror end (ldo_mirror[].lme_end).
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in,out] lo object to update the layout of
+ * \param[in] th transaction handle for this operation
+ *
+ * \retval # of components deleted
+ * \retval negative errno on error
+ */
+static int lod_layout_del_prep_layout(const struct lu_env *env,
+ struct lod_object *lo,
+ struct thandle *th)
+{
+ struct lod_layout_component *lod_comp;
+ struct lod_thread_info *info = lod_env_info(env);
+ int rc = 0, i, j, deleted = 0;
+
+ ENTRY;
LASSERT(lo->ldo_is_composite);
LASSERT(lo->ldo_comp_cnt > 0 && lo->ldo_comp_entries != NULL);
- left = lo->ldo_comp_cnt;
- for (i = (lo->ldo_comp_cnt - 1); i >= 0; i--) {
+ rc = lod_layout_data_init(info, lo->ldo_comp_cnt);
+ if (rc)
+ RETURN(rc);
+
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
lod_comp = &lo->ldo_comp_entries[i];
- if (lod_comp->llc_id != LCME_ID_INVAL)
- break;
- left--;
+ if (lod_comp->llc_id != LCME_ID_INVAL) {
+ /* Build array of things to keep */
+ info->lti_comp_idx[info->lti_count++] = i;
+ continue;
+ }
- /* Not instantiated component */
+ lod_obj_set_pool(lo, i, NULL);
+ if (lod_comp->llc_ostlist.op_array) {
+ OBD_FREE(lod_comp->llc_ostlist.op_array,
+ lod_comp->llc_ostlist.op_size);
+ lod_comp->llc_ostlist.op_array = NULL;
+ lod_comp->llc_ostlist.op_size = 0;
+ }
+
+ deleted++;
+ CDEBUG(D_LAYOUT, "deleting comp %d, left %d\n", i,
+ lo->ldo_comp_cnt - deleted);
+
+ /* No striping info for this component */
if (lod_comp->llc_stripe == NULL)
continue;
if (obj == NULL)
continue;
- rc = lod_sub_destroy(env, obj, th);
- if (rc)
- GOTO(out, rc);
+
+ /* components which are not init have no sub objects
+ * to destroy */
+ if (lod_comp_inited(lod_comp)) {
+ rc = lod_sub_destroy(env, obj, th);
+ if (rc)
+ GOTO(out, rc);
+ }
lu_object_put(env, &obj->do_lu);
lod_comp->llc_stripe[j] = NULL;
OBD_FREE(lod_comp->llc_stripe, sizeof(struct dt_object *) *
lod_comp->llc_stripes_allocated);
lod_comp->llc_stripe = NULL;
+ OBD_FREE(lod_comp->llc_ost_indices,
+ sizeof(__u32) * lod_comp->llc_stripes_allocated);
+ lod_comp->llc_ost_indices = NULL;
lod_comp->llc_stripes_allocated = 0;
- lod_obj_set_pool(lo, i, NULL);
- if (lod_comp->llc_ostlist.op_array) {
- OBD_FREE(lod_comp->llc_ostlist.op_array,
- lod_comp->llc_ostlist.op_size);
- lod_comp->llc_ostlist.op_array = NULL;
- lod_comp->llc_ostlist.op_size = 0;
- }
}
- LASSERTF(left >= 0 && left < lo->ldo_comp_cnt, "left = %d\n", left);
- if (left > 0) {
- struct lod_layout_component *comp_array;
+ /* info->lti_count has the amount of left components */
+ LASSERTF(info->lti_count >= 0 && info->lti_count < lo->ldo_comp_cnt,
+ "left = %d, lo->ldo_comp_cnt %d\n", (int)info->lti_count,
+ (int)lo->ldo_comp_cnt);
- OBD_ALLOC(comp_array, sizeof(*comp_array) * left);
+ if (info->lti_count > 0) {
+ struct lod_layout_component *comp_array;
+
+ OBD_ALLOC(comp_array, sizeof(*comp_array) * info->lti_count);
if (comp_array == NULL)
GOTO(out, rc = -ENOMEM);
- memcpy(&comp_array[0], &lo->ldo_comp_entries[0],
- sizeof(*comp_array) * left);
+ for (i = 0; i < info->lti_count; i++) {
+ memcpy(&comp_array[i],
+ &lo->ldo_comp_entries[info->lti_comp_idx[i]],
+ sizeof(*comp_array));
+ }
OBD_FREE(lo->ldo_comp_entries,
sizeof(*comp_array) * lo->ldo_comp_cnt);
lo->ldo_comp_entries = comp_array;
- lo->ldo_comp_cnt = left;
- lod_obj_inc_layout_gen(lo);
+ lo->ldo_comp_cnt = info->lti_count;
} else {
lod_free_comp_entries(lo);
}
- LASSERT(dt_object_exists(dt));
- rc = dt_attr_get(env, next, attr);
- if (rc)
- GOTO(out, rc);
-
- if (attr->la_size > 0) {
- attr->la_size = 0;
- attr->la_valid = LA_SIZE;
- rc = lod_sub_attr_set(env, next, attr, th);
- if (rc)
- GOTO(out, rc);
- }
-
- rc = lod_generate_and_set_lovea(env, lo, th);
EXIT;
out:
- if (rc)
- lod_object_free_striping(env, lo);
- return rc;
+ return rc ? rc : deleted;
}
/**
- * Implementation of dt_object_operations::do_xattr_set.
+ * Delete layout component(s)
*
- * Sets specified extended attribute on the object. Three types of EAs are
- * special:
- * LOV EA - stores striping for a regular file or default striping (when set
+ * This function sets up the layout data in the env and does the setattrs
+ * required to write out the new layout. The layout itself is modified in
+ * lod_layout_del_prep_layout.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] dt object
+ * \param[in] th transaction handle
+ *
+ * \retval 0 on success
+ * \retval negative error number on failure
+ */
+static int lod_layout_del(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ int rc;
+
+ LASSERT(lo->ldo_mirror_count == 1);
+
+ rc = lod_layout_del_prep_layout(env, lo, th);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ /* Only do this if we didn't delete all components */
+ if (lo->ldo_comp_cnt > 0) {
+ lo->ldo_mirrors[0].lme_end = lo->ldo_comp_cnt - 1;
+ lod_obj_inc_layout_gen(lo);
+ }
+
+ LASSERT(dt_object_exists(dt));
+ rc = dt_attr_get(env, next, attr);
+ if (rc)
+ GOTO(out, rc);
+
+ if (attr->la_size > 0) {
+ attr->la_size = 0;
+ attr->la_valid = LA_SIZE;
+ rc = lod_sub_attr_set(env, next, attr, th);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ rc = lod_generate_and_set_lovea(env, lo, th);
+ EXIT;
+out:
+ if (rc)
+ lod_striping_free(env, lo);
+ return rc;
+}
+
+
+static int lod_get_default_lov_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds,
+ struct dt_allocation_hint *ah);
+/**
+ * Implementation of dt_object_operations::do_xattr_set.
+ *
+ * Sets specified extended attribute on the object. Three types of EAs are
+ * special:
+ * LOV EA - stores striping for a regular file or default striping (when set
* on a directory)
* LMV EA - stores a marker for the striped directories
* DMV EA - stores default directory striping
if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
strcmp(name, XATTR_NAME_LMV) == 0) {
- struct lmv_mds_md_v1 *lmm = buf->lb_buf;
+ rc = lod_dir_striping_create(env, dt, NULL, NULL, th);
+ RETURN(rc);
+ } else if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
+ strncmp(name, XATTR_NAME_LMV, strlen(XATTR_NAME_LMV)) == 0 &&
+ strlen(name) > strlen(XATTR_NAME_LMV) + 1) {
+ const char *op = name + strlen(XATTR_NAME_LMV) + 1;
- if (lmm != NULL && le32_to_cpu(lmm->lmv_hash_type) &
- LMV_HASH_FLAG_MIGRATION)
- rc = lod_sub_xattr_set(env, next, buf, name, fl, th);
- else
- rc = lod_dir_striping_create(env, dt, NULL, NULL, th);
+ rc = -ENOTSUPP;
+ /*
+ * XATTR_NAME_LMV".add" is never called, but only declared,
+ * because lod_xattr_set_lmv() will do the addition.
+ */
+ if (strcmp(op, "del") == 0)
+ rc = lod_dir_layout_delete(env, dt, buf, th);
+ else if (strcmp(op, "set") == 0)
+ rc = lod_sub_xattr_set(env, next, buf, XATTR_NAME_LMV,
+ fl, th);
RETURN(rc);
- }
-
- if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
+ } else if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
strcmp(name, XATTR_NAME_LOV) == 0) {
- /* default LOVEA */
- rc = lod_xattr_set_lov_on_dir(env, dt, buf, name, fl, th);
+ struct lod_default_striping *lds = lod_lds_buf_get(env);
+ struct lov_user_md_v1 *v1 = buf->lb_buf;
+ char pool[LOV_MAXPOOLNAME + 1];
+ bool is_del;
+
+ /* get existing striping config */
+ rc = lod_get_default_lov_striping(env, lod_dt_obj(dt), lds,
+ NULL);
+ if (rc)
+ RETURN(rc);
+
+ memset(pool, 0, sizeof(pool));
+ if (lds->lds_def_striping_set == 1)
+ lod_layout_get_pool(lds->lds_def_comp_entries,
+ lds->lds_def_comp_cnt, pool,
+ sizeof(pool));
+
+ is_del = LOVEA_DELETE_VALUES(v1->lmm_stripe_size,
+ v1->lmm_stripe_count,
+ v1->lmm_stripe_offset,
+ NULL);
+
+ /* Retain the pool name if it is not given */
+ if (v1->lmm_magic == LOV_USER_MAGIC_V1 && pool[0] != '\0' &&
+ !is_del) {
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lov_user_md_v3 *v3 = info->lti_ea_store;
+
+ memset(v3, 0, sizeof(*v3));
+ v3->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V3);
+ v3->lmm_pattern = cpu_to_le32(v1->lmm_pattern);
+ v3->lmm_stripe_count =
+ cpu_to_le32(v1->lmm_stripe_count);
+ v3->lmm_stripe_offset =
+ cpu_to_le32(v1->lmm_stripe_offset);
+ v3->lmm_stripe_size = cpu_to_le32(v1->lmm_stripe_size);
+
+ strlcpy(v3->lmm_pool_name, pool,
+ sizeof(v3->lmm_pool_name));
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+ rc = lod_xattr_set_lov_on_dir(env, dt, &info->lti_buf,
+ name, fl, th);
+ } else {
+ rc = lod_xattr_set_lov_on_dir(env, dt, buf, name,
+ fl, th);
+ }
+
+ if (lds->lds_def_striping_set == 1 &&
+ lds->lds_def_comp_entries != NULL)
+ lod_free_def_comp_entries(lds);
+
RETURN(rc);
} else if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
* defines striping, then create() does the work */
if (fl & LU_XATTR_REPLACE) {
/* free stripes, then update disk */
- lod_object_free_striping(env, lod_dt_obj(dt));
+ lod_striping_free(env, lod_dt_obj(dt));
rc = lod_sub_xattr_set(env, next, buf, name, fl, th);
} else if (dt_object_remote(dt)) {
}
RETURN(rc);
} else if (strcmp(name, XATTR_NAME_FID) == 0) {
- rc = lod_replace_parent_fid(env, dt, th, false);
+ rc = lod_replace_parent_fid(env, dt, buf, th, false);
RETURN(rc);
}
struct dt_object *dt, const char *name,
struct thandle *th)
{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
- int i;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ int i;
+ int rc;
ENTRY;
- rc = lod_sub_declare_xattr_del(env, dt_object_child(dt), name, th);
+ rc = lod_sub_declare_xattr_del(env, next, name, th);
if (rc != 0)
RETURN(rc);
if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
RETURN(0);
- /* set xattr to each stripes, if needed */
- rc = lod_load_striping(env, lo);
+ /* NB: don't delete stripe LMV, because when we do this, normally we
+ * will remove stripes, besides, if directory LMV is corrupt, this will
+ * prevent deleting its LMV and fixing it (via LFSCK).
+ */
+ if (!strcmp(name, XATTR_NAME_LMV))
+ RETURN(0);
+
+ rc = lod_striping_load(env, lo);
if (rc != 0)
RETURN(rc);
RETURN(0);
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- LASSERT(lo->ldo_stripe[i]);
- rc = lod_sub_declare_xattr_del(env, lo->ldo_stripe[i],
- name, th);
+ struct dt_object *dto = lo->ldo_stripe[i];
+
+ if (!dto)
+ continue;
+
+ rc = lod_sub_declare_xattr_del(env, dto, name, th);
if (rc != 0)
break;
}
int i;
ENTRY;
- if (!strcmp(name, XATTR_NAME_LOV))
- lod_object_free_striping(env, lod_dt_obj(dt));
+ if (!strcmp(name, XATTR_NAME_LOV) || !strcmp(name, XATTR_NAME_LMV))
+ lod_striping_free(env, lod_dt_obj(dt));
rc = lod_sub_xattr_del(env, next, name, th);
if (rc != 0 || !S_ISDIR(dt->do_lu.lo_header->loh_attr))
RETURN(rc);
+ if (!strcmp(name, XATTR_NAME_LMV))
+ RETURN(0);
+
if (lo->ldo_dir_stripe_count == 0)
RETURN(0);
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- LASSERT(lo->ldo_stripe[i]);
+ struct dt_object *dto = lo->ldo_stripe[i];
- rc = lod_sub_xattr_del(env, lo->ldo_stripe[i], name, th);
+ if (!dto)
+ continue;
+
+ rc = lod_sub_xattr_del(env, dto, name, th);
if (rc != 0)
break;
}
return (is_reg && fid_seq(fid) != FID_SEQ_LOCAL_FILE);
}
+/**
+ * Copy OST list from layout provided by user.
+ *
+ * \param[in] lod_comp layout_component to be filled
+ * \param[in] v3 LOV EA V3 user data
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
+ struct lov_user_md_v3 *v3)
+{
+ int j;
+
+ ENTRY;
+
+ if (v3->lmm_stripe_offset == LOV_OFFSET_DEFAULT)
+ v3->lmm_stripe_offset = v3->lmm_objects[0].l_ost_idx;
+
+ if (lod_comp->llc_ostlist.op_array) {
+ if (lod_comp->llc_ostlist.op_size >=
+ v3->lmm_stripe_count * sizeof(__u32)) {
+ lod_comp->llc_ostlist.op_count =
+ v3->lmm_stripe_count;
+ goto skip;
+ }
+ OBD_FREE(lod_comp->llc_ostlist.op_array,
+ lod_comp->llc_ostlist.op_size);
+ }
+
+ /* copy ost list from lmm */
+ lod_comp->llc_ostlist.op_count = v3->lmm_stripe_count;
+ lod_comp->llc_ostlist.op_size = v3->lmm_stripe_count * sizeof(__u32);
+ OBD_ALLOC(lod_comp->llc_ostlist.op_array,
+ lod_comp->llc_ostlist.op_size);
+ if (!lod_comp->llc_ostlist.op_array)
+ RETURN(-ENOMEM);
+skip:
+ for (j = 0; j < v3->lmm_stripe_count; j++) {
+ lod_comp->llc_ostlist.op_array[j] =
+ v3->lmm_objects[j].l_ost_idx;
+ }
+
+ RETURN(0);
+}
+
/**
* Get default striping.
*/
static int lod_get_default_lov_striping(const struct lu_env *env,
struct lod_object *lo,
- struct lod_default_striping *lds)
+ struct lod_default_striping *lds,
+ struct dt_allocation_hint *ah)
{
struct lod_thread_info *info = lod_env_info(env);
struct lov_user_md_v1 *v1 = NULL;
struct lov_user_md_v3 *v3 = NULL;
struct lov_comp_md_v1 *comp_v1 = NULL;
- __u16 comp_cnt;
- bool composite;
- int rc, i;
- ENTRY;
+ __u16 comp_cnt;
+ __u16 mirror_cnt;
+ bool composite;
+ int rc, i, j;
- lds->lds_def_striping_set = 0;
+ ENTRY;
rc = lod_get_lov_ea(env, lo);
if (rc < 0)
} else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
v3 = (struct lov_user_md_v3 *)v1;
lustre_swab_lov_user_md_v3(v3);
- } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_COMP_V1)) {
+ } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_SPECIFIC)) {
+ v3 = (struct lov_user_md_v3 *)v1;
+ lustre_swab_lov_user_md_v3(v3);
+ lustre_swab_lov_user_md_objects(v3->lmm_objects,
+ v3->lmm_stripe_count);
+ } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_COMP_V1) ||
+ v1->lmm_magic == __swab32(LOV_USER_MAGIC_SEL)) {
comp_v1 = (struct lov_comp_md_v1 *)v1;
lustre_swab_lov_comp_md_v1(comp_v1);
}
if (v1->lmm_magic != LOV_MAGIC_V3 && v1->lmm_magic != LOV_MAGIC_V1 &&
- v1->lmm_magic != LOV_MAGIC_COMP_V1)
+ v1->lmm_magic != LOV_MAGIC_COMP_V1 &&
+ v1->lmm_magic != LOV_MAGIC_SEL &&
+ v1->lmm_magic != LOV_USER_MAGIC_SPECIFIC)
RETURN(-ENOTSUPP);
- if (v1->lmm_magic == LOV_MAGIC_COMP_V1) {
+ if ((v1->lmm_magic == LOV_MAGIC_COMP_V1 ||
+ v1->lmm_magic == LOV_MAGIC_SEL) &&
+ !(ah && ah->dah_append_stripes)) {
comp_v1 = (struct lov_comp_md_v1 *)v1;
comp_cnt = comp_v1->lcm_entry_count;
if (comp_cnt == 0)
RETURN(-EINVAL);
+ mirror_cnt = comp_v1->lcm_mirror_count + 1;
composite = true;
} else {
comp_cnt = 1;
+ mirror_cnt = 0;
composite = false;
}
RETURN(rc);
lds->lds_def_comp_cnt = comp_cnt;
- lds->lds_def_striping_is_composite = composite ? 1 : 0;
+ lds->lds_def_striping_is_composite = composite;
+ lds->lds_def_mirror_cnt = mirror_cnt;
for (i = 0; i < comp_cnt; i++) {
struct lod_layout_component *lod_comp;
- struct lu_extent *ext;
char *pool;
lod_comp = &lds->lds_def_comp_entries[i];
if (composite) {
v1 = (struct lov_user_md *)((char *)comp_v1 +
comp_v1->lcm_entries[i].lcme_offset);
- ext = &comp_v1->lcm_entries[i].lcme_extent;
- lod_comp->llc_extent = *ext;
+ lod_comp->llc_extent =
+ comp_v1->lcm_entries[i].lcme_extent;
+ /* We only inherit certain flags from the layout */
+ lod_comp->llc_flags =
+ comp_v1->lcm_entries[i].lcme_flags &
+ LCME_TEMPLATE_FLAGS;
}
- if (v1->lmm_pattern != LOV_PATTERN_RAID0 &&
- v1->lmm_pattern != LOV_PATTERN_MDT &&
- v1->lmm_pattern != 0) {
+ if (!lov_pattern_supported(v1->lmm_pattern) &&
+ !(v1->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
lod_free_def_comp_entries(lds);
RETURN(-EINVAL);
}
- CDEBUG(D_LAYOUT, DFID" stripe_count=%d stripe_size=%d "
- "stripe_offset=%d\n",
+ CDEBUG(D_LAYOUT, DFID" stripe_count=%d stripe_size=%d stripe_offset=%d append_stripes=%d\n",
PFID(lu_object_fid(&lo->ldo_obj.do_lu)),
(int)v1->lmm_stripe_count, (int)v1->lmm_stripe_size,
- (int)v1->lmm_stripe_offset);
+ (int)v1->lmm_stripe_offset,
+ ah ? ah->dah_append_stripes : 0);
- lod_comp->llc_stripe_count = v1->lmm_stripe_count;
+ if (ah && ah->dah_append_stripes)
+ lod_comp->llc_stripe_count = ah->dah_append_stripes;
+ else
+ lod_comp->llc_stripe_count = v1->lmm_stripe_count;
lod_comp->llc_stripe_size = v1->lmm_stripe_size;
lod_comp->llc_stripe_offset = v1->lmm_stripe_offset;
lod_comp->llc_pattern = v1->lmm_pattern;
pool = NULL;
- if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
+ if (ah && ah->dah_append_pool && ah->dah_append_pool[0]) {
+ pool = ah->dah_append_pool;
+ } else if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
/* XXX: sanity check here */
v3 = (struct lov_user_md_v3 *) v1;
if (v3->lmm_pool_name[0] != '\0')
pool = v3->lmm_pool_name;
}
lod_set_def_pool(lds, i, pool);
+ if (v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
+ v3 = (struct lov_user_md_v3 *)v1;
+ rc = lod_comp_copy_ost_lists(lod_comp, v3);
+ if (rc)
+ RETURN(rc);
+ } else if (lod_comp->llc_ostlist.op_array &&
+ lod_comp->llc_ostlist.op_count) {
+ for (j = 0; j < lod_comp->llc_ostlist.op_count; j++)
+ lod_comp->llc_ostlist.op_array[j] = -1;
+ lod_comp->llc_ostlist.op_count = 0;
+ }
}
lds->lds_def_striping_set = 1;
struct lod_object *lo,
struct lod_default_striping *lds)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lmv_user_md_v1 *v1 = NULL;
- int rc;
- ENTRY;
+ struct lmv_user_md *lmu;
+ int rc;
lds->lds_dir_def_striping_set = 0;
+
rc = lod_get_default_lmv_ea(env, lo);
if (rc < 0)
- RETURN(rc);
+ return rc;
- if (rc < (typeof(rc))sizeof(struct lmv_user_md))
- RETURN(0);
+ if (rc >= (int)sizeof(*lmu)) {
+ struct lod_thread_info *info = lod_env_info(env);
- v1 = info->lti_ea_store;
+ lmu = info->lti_ea_store;
- lds->lds_dir_def_stripe_count = le32_to_cpu(v1->lum_stripe_count);
- lds->lds_dir_def_stripe_offset = le32_to_cpu(v1->lum_stripe_offset);
- lds->lds_dir_def_hash_type = le32_to_cpu(v1->lum_hash_type);
- lds->lds_dir_def_striping_set = 1;
+ lds->lds_dir_def_stripe_count =
+ le32_to_cpu(lmu->lum_stripe_count);
+ lds->lds_dir_def_stripe_offset =
+ le32_to_cpu(lmu->lum_stripe_offset);
+ lds->lds_dir_def_hash_type =
+ le32_to_cpu(lmu->lum_hash_type);
+ lds->lds_dir_def_striping_set = 1;
+ }
- RETURN(0);
+ return 0;
}
/**
{
int rc, rc1;
- rc = lod_get_default_lov_striping(env, lo, lds);
+ rc = lod_get_default_lov_striping(env, lo, lds, NULL);
rc1 = lod_get_default_lmv_striping(env, lo, lds);
if (rc == 0 && rc1 < 0)
rc = rc1;
umode_t mode)
{
struct lod_device *d = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
- struct lov_desc *desc = &d->lod_desc;
int i, rc;
if (lds->lds_def_striping_set && S_ISREG(mode)) {
- rc = lod_alloc_comp_entries(lo, lds->lds_def_comp_cnt);
+ struct lov_desc *desc = &d->lod_ost_descs.ltd_lov_desc;
+
+ rc = lod_alloc_comp_entries(lo, lds->lds_def_mirror_cnt,
+ lds->lds_def_comp_cnt);
if (rc != 0)
return;
lo->ldo_is_composite = lds->lds_def_striping_is_composite;
+ if (lds->lds_def_mirror_cnt > 1)
+ lo->ldo_flr_state = LCM_FL_RDONLY;
for (i = 0; i < lo->ldo_comp_cnt; i++) {
struct lod_layout_component *obj_comp =
struct lod_layout_component *def_comp =
&lds->lds_def_comp_entries[i];
- CDEBUG(D_LAYOUT, "Inherite from default: size:%hu "
- "nr:%u offset:%u pattern %#x %s\n",
+ CDEBUG(D_LAYOUT, "Inherit from default: flags=%#x "
+ "size=%hu nr=%u offset=%u pattern=%#x pool=%s\n",
+ def_comp->llc_flags,
def_comp->llc_stripe_size,
def_comp->llc_stripe_count,
def_comp->llc_stripe_offset,
lod_obj_set_pool(lo, i, def_comp->llc_pool);
}
+ /* copy ost list */
+ if (def_comp->llc_ostlist.op_array &&
+ def_comp->llc_ostlist.op_count) {
+ OBD_ALLOC(obj_comp->llc_ostlist.op_array,
+ obj_comp->llc_ostlist.op_size);
+ if (!obj_comp->llc_ostlist.op_array)
+ return;
+ memcpy(obj_comp->llc_ostlist.op_array,
+ def_comp->llc_ostlist.op_array,
+ obj_comp->llc_ostlist.op_size);
+ } else if (def_comp->llc_ostlist.op_array) {
+ obj_comp->llc_ostlist.op_array = NULL;
+ }
+
/*
* Don't initialize these fields for plain layout
* (v1/v3) here, they are inherited in the order of
if (!lo->ldo_is_composite)
continue;
- if (obj_comp->llc_stripe_count <= 0 &&
- obj_comp->llc_pattern != LOV_PATTERN_MDT)
- obj_comp->llc_stripe_count =
- desc->ld_default_stripe_count;
- if (obj_comp->llc_stripe_size <= 0)
- obj_comp->llc_stripe_size =
- desc->ld_default_stripe_size;
+ lod_adjust_stripe_info(obj_comp, desc, 0);
}
} else if (lds->lds_dir_def_striping_set && S_ISDIR(mode)) {
if (lo->ldo_dir_stripe_count == 0)
}
}
-static inline bool lod_need_inherit_more(struct lod_object *lo, bool from_root)
+static inline bool lod_need_inherit_more(struct lod_object *lo, bool from_root,
+ char *append_pool)
{
struct lod_layout_component *lod_comp;
lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT))
return true;
+ if (append_pool && append_pool[0])
+ return true;
+
return false;
}
{
struct lod_device *d = lu2lod_dev(child->do_lu.lo_dev);
struct lod_thread_info *info = lod_env_info(env);
- struct lod_default_striping *lds = &info->lti_def_striping;
+ struct lod_default_striping *lds = lod_lds_buf_get(env);
struct dt_object *nextp = NULL;
struct dt_object *nextc;
struct lod_object *lp = NULL;
LASSERT(child);
+ if (ah->dah_append_stripes == -1)
+ ah->dah_append_stripes =
+ d->lod_ost_descs.ltd_lov_desc.ld_tgt_count;
+
if (likely(parent)) {
nextp = dt_object_child(parent);
lp = lod_dt_obj(parent);
nextc->do_ops->do_ah_init(env, ah, nextp, nextc, child_mode);
if (S_ISDIR(child_mode)) {
+ const struct lmv_user_md_v1 *lum1 = ah->dah_eadata;
+
/* other default values are 0 */
lc->ldo_dir_stripe_offset = -1;
- /* get default striping from parent object */
- if (likely(lp != NULL))
+ /* no default striping configuration is needed for
+ * foreign dirs
+ */
+ if (ah->dah_eadata != NULL && ah->dah_eadata_len != 0 &&
+ le32_to_cpu(lum1->lum_magic) == LMV_MAGIC_FOREIGN) {
+ lc->ldo_dir_is_foreign = true;
+ /* keep stripe_count 0 and stripe_offset -1 */
+ CDEBUG(D_INFO, "no default striping for foreign dir\n");
+ RETURN_EXIT;
+ }
+
+ /*
+ * If parent object is not root directory,
+ * then get default striping from parent object.
+ */
+ if (likely(lp != NULL)) {
lod_get_default_striping(env, lp, lds);
- /* set child default striping info, default value is NULL */
- if (lds->lds_def_striping_set || lds->lds_dir_def_striping_set)
- lc->ldo_def_striping = lds;
+ /* inherit default striping except ROOT */
+ if ((lds->lds_def_striping_set ||
+ lds->lds_dir_def_striping_set) &&
+ !fid_is_root(lod_object_fid(lp)))
+ lc->ldo_def_striping = lds;
+ }
/* It should always honour the specified stripes */
+ /* Note: old client (< 2.7)might also do lfs mkdir, whose EA
+ * will have old magic. In this case, we should ignore the
+ * stripe count and try to create dir by default stripe.
+ */
if (ah->dah_eadata != NULL && ah->dah_eadata_len != 0 &&
- lod_verify_md_striping(d, ah->dah_eadata) == 0) {
- const struct lmv_user_md_v1 *lum1 = ah->dah_eadata;
-
+ (le32_to_cpu(lum1->lum_magic) == LMV_USER_MAGIC ||
+ le32_to_cpu(lum1->lum_magic) == LMV_USER_MAGIC_SPECIFIC)) {
lc->ldo_dir_stripe_count =
le32_to_cpu(lum1->lum_stripe_count);
lc->ldo_dir_stripe_offset =
} else {
/* transfer defaults LMV to new directory */
lod_striping_from_default(lc, lds, child_mode);
+
+ /* set count 0 to create normal directory */
+ if (lc->ldo_dir_stripe_count == 1)
+ lc->ldo_dir_stripe_count = 0;
}
/* shrink the stripe_count to the avaible MDT count */
if (lc->ldo_dir_stripe_count > d->lod_remote_mdt_count + 1 &&
- !OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))
+ !OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE)) {
lc->ldo_dir_stripe_count = d->lod_remote_mdt_count + 1;
-
- /* Directory will be striped only if stripe_count > 1, if
- * stripe_count == 1, let's reset stripe_count = 0 to avoid
- * create single master stripe and also help to unify the
- * stripe handling of directories and files */
- if (lc->ldo_dir_stripe_count == 1)
- lc->ldo_dir_stripe_count = 0;
+ if (lc->ldo_dir_stripe_count == 1)
+ lc->ldo_dir_stripe_count = 0;
+ }
CDEBUG(D_INFO, "final dir stripe [%hu %d %u]\n",
lc->ldo_dir_stripe_count,
* Try from the parent first.
*/
if (likely(lp != NULL)) {
- rc = lod_get_default_lov_striping(env, lp, lds);
+ rc = lod_get_default_lov_striping(env, lp, lds, ah);
if (rc == 0)
lod_striping_from_default(lc, lds, child_mode);
}
* - parent has plain(v1/v3) default layout, and some attributes
* are not specified in the default layout;
*/
- if (d->lod_md_root != NULL && lod_need_inherit_more(lc, true)) {
- rc = lod_get_default_lov_striping(env, d->lod_md_root, lds);
+ if (d->lod_md_root != NULL &&
+ lod_need_inherit_more(lc, true, ah->dah_append_pool)) {
+ rc = lod_get_default_lov_striping(env, d->lod_md_root, lds,
+ ah);
if (rc)
goto out;
if (lc->ldo_comp_cnt == 0) {
if (lod_comp->llc_stripe_size <= 0)
lod_comp->llc_stripe_size =
def_comp->llc_stripe_size;
- if (lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT)
+ if (lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT &&
+ (!lod_comp->llc_pool || !lod_comp->llc_pool[0]))
lod_comp->llc_stripe_offset =
def_comp->llc_stripe_offset;
if (lod_comp->llc_pool == NULL)
* fs default striping may not be explicitly set, or historically set
* in config log, use them.
*/
- if (lod_need_inherit_more(lc, false)) {
-
+ if (lod_need_inherit_more(lc, false, ah->dah_append_pool)) {
if (lc->ldo_comp_cnt == 0) {
- rc = lod_alloc_comp_entries(lc, 1);
+ rc = lod_alloc_comp_entries(lc, 0, 1);
if (rc)
/* fail to allocate memory, will create a
* non-striped file. */
}
LASSERT(!lc->ldo_is_composite);
lod_comp = &lc->ldo_comp_entries[0];
- desc = &d->lod_desc;
- if (lod_comp->llc_stripe_count <= 0)
- lod_comp->llc_stripe_count =
- desc->ld_default_stripe_count;
- if (lod_comp->llc_stripe_size <= 0)
- lod_comp->llc_stripe_size =
- desc->ld_default_stripe_size;
+ desc = &d->lod_ost_descs.ltd_lov_desc;
+ lod_adjust_stripe_info(lod_comp, desc, ah->dah_append_stripes);
+ if (ah->dah_append_pool && ah->dah_append_pool[0])
+ lod_obj_set_pool(lc, 0, ah->dah_append_pool);
}
EXIT;
struct lu_attr *attr = &lod_env_info(env)->lti_attr;
uint64_t size, offs;
int i, rc, stripe, stripe_count = 0, stripe_size = 0;
+ struct lu_extent size_ext;
ENTRY;
if (!lod_obj_is_striped(dt))
if (size == 0)
RETURN(0);
+ size_ext = (typeof(size_ext)){ .e_start = size - 1, .e_end = size };
for (i = 0; i < lo->ldo_comp_cnt; i++) {
struct lod_layout_component *lod_comp;
struct lu_extent *extent;
continue;
extent = &lod_comp->llc_extent;
- CDEBUG(D_INFO, "%lld [%lld, %lld)\n",
- size, extent->e_start, extent->e_end);
+ CDEBUG(D_INFO, "%lld "DEXT"\n", size, PEXT(extent));
if (!lo->ldo_is_composite ||
- (size >= extent->e_start && size < extent->e_end)) {
+ lu_extent_is_overlapped(extent, &size_ext)) {
objects = lod_comp->llc_stripe;
stripe_count = lod_comp->llc_stripe_count;
stripe_size = lod_comp->llc_stripe_size;
- break;
- }
- }
-
- if (stripe_count == 0)
- RETURN(0);
- LASSERT(objects != NULL && stripe_size != 0);
+ /* next mirror */
+ if (stripe_count == 0)
+ continue;
- /* ll_do_div64(a, b) returns a % b, and a = a / b */
- ll_do_div64(size, (__u64)stripe_size);
- stripe = ll_do_div64(size, (__u64)stripe_count);
- LASSERT(objects[stripe] != NULL);
+ LASSERT(objects != NULL && stripe_size != 0);
+ /* ll_do_div64(a, b) returns a % b, and a = a / b */
+ ll_do_div64(size, (__u64)stripe_size);
+ stripe = ll_do_div64(size, (__u64)stripe_count);
+ LASSERT(objects[stripe] != NULL);
- size = size * stripe_size;
- offs = attr->la_size;
- size += ll_do_div64(offs, stripe_size);
+ size = size * stripe_size;
+ offs = attr->la_size;
+ size += ll_do_div64(offs, stripe_size);
- attr->la_valid = LA_SIZE;
- attr->la_size = size;
+ attr->la_valid = LA_SIZE;
+ attr->la_size = size;
- rc = lod_sub_declare_attr_set(env, objects[stripe], attr, th);
+ rc = lod_sub_declare_attr_set(env, objects[stripe],
+ attr, th);
+ }
+ }
RETURN(rc);
}
/* failed to create striping or to set initial size, let's reset
* config so that others don't get confused */
if (rc)
- lod_object_free_striping(env, lo);
+ lod_striping_free(env, lo);
RETURN(rc);
}
+/*
+ * Whether subdirectories under \a dt should be created on MDTs by space QoS
+ *
+ * If LMV_HASH_FLAG_SPACE is set on directory default layout, its subdirectories
+ * should be created on MDT by space QoS.
+ *
+ * \param[in] env execution environment
+ * \param[in] dev lu device
+ * \param[in] dt object
+ *
+ * \retval 1 if directory should create subdir by space usage
+ * \retval 0 if not
+ * \retval -ev if failed
+ */
+static inline int dt_object_qos_mkdir(const struct lu_env *env,
+ struct lu_device *dev,
+ struct dt_object *dt)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_object *obj;
+ struct lod_object *lo;
+ struct lmv_user_md *lmu;
+ int rc;
+
+ obj = lu_object_find_slice(env, dev, lu_object_fid(&dt->do_lu), NULL);
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ lo = lu2lod_obj(obj);
+
+ rc = lod_get_default_lmv_ea(env, lo);
+ dt_object_put(env, dt);
+ if (rc <= 0)
+ return rc;
+
+ if (rc < (int)sizeof(*lmu))
+ return -EINVAL;
+
+ lmu = info->lti_ea_store;
+ return le32_to_cpu(lmu->lum_stripe_offset) == LMV_OFFSET_DEFAULT;
+}
+
/**
* Implementation of dt_object_operations::do_declare_create.
*
NULL, th);
} else if (dof->dof_type == DFT_DIR) {
struct seq_server_site *ss;
+ struct lu_buf buf = { NULL };
+ struct lu_buf *lmu = NULL;
ss = lu_site2seq(dt->do_lu.lo_dev->ld_site);
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STALE_DIR_LAYOUT))
GOTO(out, rc = -EREMOTE);
- if (lo->ldo_dir_stripe_offset == -1) {
- /* child and parent should be in the same MDT */
- if (hint->dah_parent != NULL &&
- dt_object_remote(hint->dah_parent))
+ if (lo->ldo_dir_stripe_offset == LMV_OFFSET_DEFAULT) {
+ struct lod_default_striping *lds;
+
+ lds = lo->ldo_def_striping;
+ /*
+ * child and parent should be on the same MDT,
+ * but if parent has default LMV, and the start
+ * MDT offset is -1, it's allowed. This check
+ * is not necessary after 2.12.22 because client
+ * follows this already, but old client may not.
+ */
+ if (hint->dah_parent &&
+ dt_object_remote(hint->dah_parent) && lds &&
+ lds->lds_dir_def_stripe_offset !=
+ LMV_OFFSET_DEFAULT)
GOTO(out, rc = -EREMOTE);
} else if (lo->ldo_dir_stripe_offset !=
ss->ss_node_id) {
struct lod_device *lod;
- struct lod_tgt_descs *ltd;
- struct lod_tgt_desc *tgt = NULL;
+ struct lu_tgt_desc *mdt = NULL;
bool found_mdt = false;
- int i;
lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
- ltd = &lod->lod_mdt_descs;
- cfs_foreach_bit(ltd->ltd_tgt_bitmap, i) {
- tgt = LTD_TGT(ltd, i);
- if (tgt->ltd_index ==
+ lod_foreach_mdt(lod, mdt) {
+ if (mdt->ltd_index ==
lo->ldo_dir_stripe_offset) {
found_mdt = true;
break;
else
GOTO(out, rc = -EINVAL);
}
+ } else if (hint && hint->dah_eadata) {
+ lmu = &buf;
+ lmu->lb_buf = (void *)hint->dah_eadata;
+ lmu->lb_len = hint->dah_eadata_len;
}
- rc = lod_declare_dir_striping_create(env, dt, attr, dof, th);
+ rc = lod_declare_dir_striping_create(env, dt, attr, lmu, dof,
+ th);
}
out:
/* failed to create striping or to set initial size, let's reset
* config so that others don't get confused */
if (rc)
- lod_object_free_striping(env, lo);
+ lod_striping_free(env, lo);
RETURN(rc);
}
/**
+ * Generate component ID for new created component.
+ *
+ * \param[in] lo LOD object
+ * \param[in] comp_idx index of ldo_comp_entries
+ *
+ * \retval component ID on success
+ * \retval LCME_ID_INVAL on failure
+ */
+static __u32 lod_gen_component_id(struct lod_object *lo,
+ int mirror_id, int comp_idx)
+{
+ struct lod_layout_component *lod_comp;
+ __u32 id, start, end;
+ int i;
+
+ LASSERT(lo->ldo_comp_entries[comp_idx].llc_id == LCME_ID_INVAL);
+
+ lod_obj_inc_layout_gen(lo);
+ id = lo->ldo_layout_gen;
+ if (likely(id <= SEQ_ID_MAX))
+ RETURN(pflr_id(mirror_id, id & SEQ_ID_MASK));
+
+ /* Layout generation wraps, need to check collisions. */
+ start = id & SEQ_ID_MASK;
+ end = SEQ_ID_MAX;
+again:
+ for (id = start; id <= end; id++) {
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+ if (pflr_id(mirror_id, id) == lod_comp->llc_id)
+ break;
+ }
+ /* Found the ununsed ID */
+ if (i == lo->ldo_comp_cnt)
+ RETURN(pflr_id(mirror_id, id));
+ }
+ if (end == LCME_ID_MAX) {
+ start = 1;
+ end = min(lo->ldo_layout_gen & LCME_ID_MASK,
+ (__u32)(LCME_ID_MAX - 1));
+ goto again;
+ }
+
+ RETURN(LCME_ID_INVAL);
+}
+
+/**
* Creation of a striped regular object.
*
* The function is called to create the stripe objects for a regular
{
struct lod_layout_component *lod_comp;
struct lod_object *lo = lod_dt_obj(dt);
+ __u16 mirror_id;
int rc = 0, i, j;
ENTRY;
- LASSERT(lo->ldo_comp_cnt != 0 && lo->ldo_comp_entries != NULL);
+ LASSERT((lo->ldo_comp_cnt != 0 && lo->ldo_comp_entries != NULL) ||
+ lo->ldo_is_foreign);
+
+ mirror_id = 0; /* non-flr file's mirror_id is 0 */
+ if (lo->ldo_mirror_count > 1) {
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+ if (lod_comp->llc_id != LCME_ID_INVAL &&
+ mirror_id_of(lod_comp->llc_id) > mirror_id)
+ mirror_id = mirror_id_of(lod_comp->llc_id);
+ }
+ }
/* create all underlying objects */
for (i = 0; i < lo->ldo_comp_cnt; i++) {
lod_comp = &lo->ldo_comp_entries[i];
+ if (lod_comp->llc_id == LCME_ID_INVAL) {
+ /* only the component of FLR layout with more than 1
+ * mirror has mirror ID in its component ID.
+ */
+ if (lod_comp->llc_extent.e_start == 0 &&
+ lo->ldo_mirror_count > 1)
+ ++mirror_id;
+
+ lod_comp->llc_id = lod_gen_component_id(lo,
+ mirror_id, i);
+ if (lod_comp->llc_id == LCME_ID_INVAL)
+ GOTO(out, rc = -ERANGE);
+ }
+
if (lod_comp_inited(lod_comp))
continue;
LASSERT(object != NULL);
rc = lod_sub_create(env, object, attr, NULL, dof, th);
if (rc)
- break;
+ GOTO(out, rc);
}
lod_comp_set_init(lod_comp);
}
- if (rc == 0)
- rc = lod_generate_and_set_lovea(env, lo, th);
+ rc = lod_fill_mirrors(lo);
+ if (rc)
+ GOTO(out, rc);
- if (rc == 0)
- lo->ldo_comp_cached = 1;
- else
- lod_object_free_striping(env, lo);
+ rc = lod_generate_and_set_lovea(env, lo, th);
+ if (rc)
+ GOTO(out, rc);
+
+ lo->ldo_comp_cached = 1;
+ RETURN(0);
+out:
+ lod_striping_free(env, lo);
RETURN(rc);
}
+static inline bool lod_obj_is_dom(struct dt_object *dt)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+
+ if (!dt_object_exists(dt_object_child(dt)))
+ return false;
+
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ return false;
+
+ if (!lo->ldo_comp_cnt)
+ return false;
+
+ return (lov_pattern(lo->ldo_comp_entries[0].llc_pattern) ==
+ LOV_PATTERN_MDT);
+}
+
/**
* Implementation of dt_object_operations::do_create.
*
RETURN(rc);
if (S_ISREG(dt->do_lu.lo_header->loh_attr) &&
- lod_obj_is_striped(dt) && dof->u.dof_reg.striped != 0) {
+ (lod_obj_is_striped(dt) || lod_obj_is_dom(dt)) &&
+ dof->u.dof_reg.striped != 0) {
LASSERT(lod_dt_obj(dt)->ldo_comp_cached == 0);
rc = lod_striped_create(env, dt, attr, dof, th);
}
static inline int
lod_obj_stripe_destroy_cb(const struct lu_env *env, struct lod_object *lo,
struct dt_object *dt, struct thandle *th,
- int stripe_idx, struct lod_obj_stripe_cb_data *data)
+ int comp_idx, int stripe_idx,
+ struct lod_obj_stripe_cb_data *data)
{
if (data->locd_declare)
return lod_sub_declare_destroy(env, dt, th);
static int lod_declare_destroy(const struct lu_env *env, struct dt_object *dt,
struct thandle *th)
{
- struct dt_object *next = dt_object_child(dt);
- struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
struct lod_thread_info *info = lod_env_info(env);
- char *stripe_name = info->lti_key;
- int rc, i;
+ struct dt_object *stripe;
+ char *stripe_name = info->lti_key;
+ int rc, i;
+
ENTRY;
/*
* is being initialized as we don't need this information till
* few specific cases like destroy, chown
*/
- rc = lod_load_striping(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc)
RETURN(rc);
RETURN(rc);
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ stripe = lo->ldo_stripe[i];
+ if (!stripe)
+ continue;
+
rc = lod_sub_declare_ref_del(env, next, th);
if (rc != 0)
RETURN(rc);
- snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
- PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)),
- i);
+ snprintf(stripe_name, sizeof(info->lti_key),
+ DFID":%d",
+ PFID(lu_object_fid(&stripe->do_lu)), i);
rc = lod_sub_declare_delete(env, next,
(const struct dt_key *)stripe_name, th);
if (rc != 0)
/* declare destroy all striped objects */
if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- if (lo->ldo_stripe[i] == NULL)
+ stripe = lo->ldo_stripe[i];
+ if (!stripe)
continue;
- rc = lod_sub_declare_ref_del(env, lo->ldo_stripe[i],
- th);
+ if (!dt_object_exists(stripe))
+ continue;
- rc = lod_sub_declare_destroy(env, lo->ldo_stripe[i],
- th);
+ rc = lod_sub_declare_ref_del(env, stripe, th);
+ if (rc != 0)
+ break;
+
+ rc = lod_sub_declare_destroy(env, stripe, th);
if (rc != 0)
break;
}
} else {
- struct lod_obj_stripe_cb_data data;
+ struct lod_obj_stripe_cb_data data = { { 0 } };
data.locd_declare = true;
- rc = lod_obj_for_each_stripe(env, lo, th,
- lod_obj_stripe_destroy_cb, &data);
+ data.locd_stripe_cb = lod_obj_stripe_destroy_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
RETURN(rc);
struct dt_object *next = dt_object_child(dt);
struct lod_object *lo = lod_dt_obj(dt);
struct lod_thread_info *info = lod_env_info(env);
- char *stripe_name = info->lti_key;
- unsigned int i;
- int rc;
+ char *stripe_name = info->lti_key;
+ struct dt_object *stripe;
+ unsigned int i;
+ int rc;
+
ENTRY;
/* destroy sub-stripe of master object */
RETURN(rc);
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ stripe = lo->ldo_stripe[i];
+ if (!stripe)
+ continue;
+
rc = lod_sub_ref_del(env, next, th);
if (rc != 0)
RETURN(rc);
snprintf(stripe_name, sizeof(info->lti_key), DFID":%d",
- PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)),
- i);
+ PFID(lu_object_fid(&stripe->do_lu)), i);
CDEBUG(D_INFO, DFID" delete stripe %s "DFID"\n",
PFID(lu_object_fid(&dt->do_lu)), stripe_name,
- PFID(lu_object_fid(&lo->ldo_stripe[i]->do_lu)));
+ PFID(lu_object_fid(&stripe->do_lu)));
rc = lod_sub_delete(env, next,
(const struct dt_key *)stripe_name, th);
/* destroy all striped objects */
if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
- if (lo->ldo_stripe[i] == NULL)
+ stripe = lo->ldo_stripe[i];
+ if (!stripe)
continue;
+
+ if (!dt_object_exists(stripe))
+ continue;
+
if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_SPEOBJ) ||
i == cfs_fail_val) {
- dt_write_lock(env, lo->ldo_stripe[i],
- MOR_TGT_CHILD);
- rc = lod_sub_ref_del(env, lo->ldo_stripe[i],
- th);
- dt_write_unlock(env, lo->ldo_stripe[i]);
+ dt_write_lock(env, stripe, DT_TGT_CHILD);
+ rc = lod_sub_ref_del(env, stripe, th);
+ dt_write_unlock(env, stripe);
if (rc != 0)
break;
- rc = lod_sub_destroy(env, lo->ldo_stripe[i],
- th);
+ rc = lod_sub_destroy(env, stripe, th);
if (rc != 0)
break;
}
}
} else {
- struct lod_obj_stripe_cb_data data;
+ struct lod_obj_stripe_cb_data data = { { 0 } };
data.locd_declare = false;
- rc = lod_obj_for_each_stripe(env, lo, th,
- lod_obj_stripe_destroy_cb, &data);
+ data.locd_stripe_cb = lod_obj_stripe_destroy_cb;
+ rc = lod_obj_for_each_stripe(env, lo, th, &data);
}
RETURN(rc);
}
/**
- * Release LDLM locks on the stripes of a striped directory.
- *
- * Iterates over all the locks taken on the stripe objects and
- * cancel them.
- *
- * \param[in] env execution environment
- * \param[in] dt striped object
- * \param[in] einfo lock description
- * \param[in] policy data describing requested lock
- *
- * \retval 0 on success
- * \retval negative if failed
- */
-static int lod_object_unlock_internal(const struct lu_env *env,
- struct dt_object *dt,
- struct ldlm_enqueue_info *einfo,
- union ldlm_policy_data *policy)
-{
- struct lustre_handle_array *slave_locks = einfo->ei_cbdata;
- int rc = 0;
- int i;
- ENTRY;
-
- if (slave_locks == NULL)
- RETURN(0);
-
- for (i = 1; i < slave_locks->count; i++) {
- if (lustre_handle_is_used(&slave_locks->handles[i]))
- ldlm_lock_decref_and_cancel(&slave_locks->handles[i],
- einfo->ei_mode);
- }
-
- RETURN(rc);
-}
-
-/**
* Implementation of dt_object_operations::do_object_unlock.
*
* Used to release LDLM lock(s).
RETURN(0);
LASSERT(S_ISDIR(dt->do_lu.lo_header->loh_attr));
- LASSERT(lo->ldo_dir_stripe_count > 1);
/* Note: for remote lock for single stripe dir, MDT will cancel
* the lock by lockh directly */
LASSERT(!dt_object_remote(dt_object_child(dt)));
/* locks were unlocked in MDT layer */
- for (i = 1; i < slave_locks->count; i++) {
- LASSERT(!lustre_handle_is_used(&slave_locks->handles[i]));
- dt_invalidate(env, lo->ldo_stripe[i]);
+ for (i = 0; i < slave_locks->ha_count; i++)
+ LASSERT(!lustre_handle_is_used(&slave_locks->ha_handles[i]));
+
+ /*
+ * NB, ha_count may not equal to ldo_dir_stripe_count, because dir
+ * layout may change, e.g., shrink dir layout after migration.
+ */
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ if (lo->ldo_stripe[i])
+ dt_invalidate(env, lo->ldo_stripe[i]);
}
- slave_locks_size = sizeof(*slave_locks) + slave_locks->count *
- sizeof(slave_locks->handles[0]);
+ slave_locks_size = offsetof(typeof(*slave_locks),
+ ha_handles[slave_locks->ha_count]);
OBD_FREE(slave_locks, slave_locks_size);
einfo->ei_cbdata = NULL;
struct ldlm_enqueue_info *einfo,
union ldlm_policy_data *policy)
{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc = 0;
- int i;
- int slave_locks_size;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int slave_locks_size;
struct lustre_handle_array *slave_locks = NULL;
+ int i;
+ int rc;
ENTRY;
/* remote object lock */
}
if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- GOTO(out, rc = -ENOTDIR);
+ RETURN(-ENOTDIR);
- rc = lod_load_striping(env, lo);
+ rc = lod_striping_load(env, lo);
if (rc != 0)
- GOTO(out, rc);
+ RETURN(rc);
/* No stripes */
- if (lo->ldo_dir_stripe_count <= 1) {
- /*
- * NB, ei_cbdata stores pointer to slave locks, if no locks
- * taken, make sure it's set to NULL, otherwise MDT will try to
- * unlock them.
- */
- einfo->ei_cbdata = NULL;
- GOTO(out, rc = 0);
- }
+ if (lo->ldo_dir_stripe_count <= 1)
+ RETURN(0);
- slave_locks_size = sizeof(*slave_locks) + lo->ldo_dir_stripe_count *
- sizeof(slave_locks->handles[0]);
+ slave_locks_size = offsetof(typeof(*slave_locks),
+ ha_handles[lo->ldo_dir_stripe_count]);
/* Freed in lod_object_unlock */
OBD_ALLOC(slave_locks, slave_locks_size);
- if (slave_locks == NULL)
- GOTO(out, rc = -ENOMEM);
- slave_locks->count = lo->ldo_dir_stripe_count;
+ if (!slave_locks)
+ RETURN(-ENOMEM);
+ slave_locks->ha_count = lo->ldo_dir_stripe_count;
/* striped directory lock */
- for (i = 1; i < lo->ldo_dir_stripe_count; i++) {
- struct lustre_handle lockh;
- struct ldlm_res_id *res_id;
+ for (i = 0; i < lo->ldo_dir_stripe_count; i++) {
+ struct lustre_handle lockh;
+ struct ldlm_res_id *res_id;
+ struct dt_object *stripe;
+
+ stripe = lo->ldo_stripe[i];
+ if (!stripe)
+ continue;
res_id = &lod_env_info(env)->lti_res_id;
- fid_build_reg_res_name(lu_object_fid(&lo->ldo_stripe[i]->do_lu),
- res_id);
+ fid_build_reg_res_name(lu_object_fid(&stripe->do_lu), res_id);
einfo->ei_res_id = res_id;
- LASSERT(lo->ldo_stripe[i] != NULL);
- if (likely(dt_object_remote(lo->ldo_stripe[i]))) {
- rc = dt_object_lock(env, lo->ldo_stripe[i], &lockh,
- einfo, policy);
+ if (dt_object_remote(stripe)) {
+ set_bit(i, (void *)slave_locks->ha_map);
+ rc = dt_object_lock(env, stripe, &lockh, einfo, policy);
} else {
struct ldlm_namespace *ns = einfo->ei_namespace;
ldlm_blocking_callback blocking = einfo->ei_cb_local_bl;
ldlm_completion_callback completion = einfo->ei_cb_cp;
- __u64 dlmflags = LDLM_FL_ATOMIC_CB;
+ __u64 dlmflags = LDLM_FL_ATOMIC_CB;
if (einfo->ei_mode == LCK_PW ||
einfo->ei_mode == LCK_EX)
dlmflags |= LDLM_FL_COS_INCOMPAT;
- /* This only happens if there are mulitple stripes
- * on the master MDT, i.e. except stripe0, there are
- * other stripes on the Master MDT as well, Only
- * happens in the test case right now. */
LASSERT(ns != NULL);
- rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS,
+ rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS,
policy, einfo->ei_mode,
&dlmflags, blocking,
completion, NULL,
NULL, 0, LVB_T_NONE,
NULL, &lockh);
}
- if (rc != 0)
- break;
- slave_locks->handles[i] = lockh;
+ if (rc) {
+ while (i--)
+ ldlm_lock_decref_and_cancel(
+ &slave_locks->ha_handles[i],
+ einfo->ei_mode);
+ OBD_FREE(slave_locks, slave_locks_size);
+ RETURN(rc);
+ }
+ slave_locks->ha_handles[i] = lockh;
}
einfo->ei_cbdata = slave_locks;
- if (rc != 0 && slave_locks != NULL) {
- lod_object_unlock_internal(env, dt, einfo, policy);
- OBD_FREE(slave_locks, slave_locks_size);
- }
- EXIT;
-out:
- if (rc != 0)
- einfo->ei_cbdata = NULL;
- RETURN(rc);
+ RETURN(0);
}
/**
return dt_invalidate(env, dt_object_child(dt));
}
-static int lod_declare_layout_change(const struct lu_env *env,
- struct dt_object *dt,
- struct layout_intent *layout,
- const struct lu_buf *buf,
- struct thandle *th)
+static int lod_declare_instantiate_components(const struct lu_env *env,
+ struct lod_object *lo, struct thandle *th)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lod_object *lo = lod_dt_obj(dt);
- struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
- struct dt_object *next = dt_object_child(dt);
- struct ost_pool *inuse = &info->lti_inuse_osts;
- struct lod_layout_component *lod_comp;
- struct lov_comp_md_v1 *comp_v1 = NULL;
- bool replay = false;
- bool need_create = false;
- int i, rc;
+ struct lod_thread_info *info = lod_env_info(env);
+ int i;
+ int rc = 0;
ENTRY;
- if (!S_ISREG(dt->do_lu.lo_header->loh_attr) || !dt_object_exists(dt) ||
- dt_object_remote(next))
- RETURN(-EINVAL);
+ LASSERT(info->lti_count < lo->ldo_comp_cnt);
- dt_write_lock(env, next, 0);
- /*
- * In case the client is passing lovea, which only happens during
- * the replay of layout intent write RPC for now, we may need to
- * parse the lovea and apply new layout configuration.
- */
- if (buf && buf->lb_len) {
- struct lov_user_md_v1 *v1 = buf->lb_buf;
+ for (i = 0; i < info->lti_count; i++) {
+ rc = lod_qos_prep_create(env, lo, NULL, th,
+ info->lti_comp_idx[i]);
+ if (rc)
+ break;
+ }
- if (v1->lmm_magic != (LOV_MAGIC_DEFINED | LOV_MAGIC_COMP_V1) &&
- v1->lmm_magic != __swab32(LOV_MAGIC_DEFINED |
- LOV_MAGIC_COMP_V1)) {
- CERROR("%s: the replay buffer of layout extend "
- "(magic %#x) does not contain expected "
- "composite layout.\n",
- lod2obd(d)->obd_name, v1->lmm_magic);
- GOTO(out, rc = -EINVAL);
- }
+ if (!rc) {
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ rc = lod_sub_declare_xattr_set(env, lod_object_child(lo),
+ &info->lti_buf, XATTR_NAME_LOV, 0, th);
+ }
- lod_object_free_striping(env, lo);
- rc = lod_use_defined_striping(env, lo, buf);
- if (rc)
- GOTO(out, rc);
+ RETURN(rc);
+}
- rc = lod_get_lov_ea(env, lo);
- if (rc <= 0)
- GOTO(out, rc);
- /* old on-disk EA is stored in info->lti_buf */
- comp_v1 = (struct lov_comp_md_v1 *)&info->lti_buf.lb_buf;
- replay = true;
- } else {
- /* non replay path */
- rc = lod_load_striping_locked(env, lo);
- if (rc)
- GOTO(out, rc);
+/**
+ * Check OSTs for an existing component for further extension
+ *
+ * Checks if OSTs are still healthy and not out of space. Gets free space
+ * on OSTs (relative to allocation watermark rmb_low) and compares to
+ * the proposed new_end for this component.
+ *
+ * Decides whether or not to extend a component on its current OSTs.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lo object we're checking
+ * \param[in] index index of this component
+ * \param[in] extension_size extension size for this component
+ * \param[in] extent layout extent for requested operation
+ * \param[in] comp_extent extension component extent
+ * \param[in] write if this is write operation
+ *
+ * \retval true - OK to extend on current OSTs
+ * \retval false - do not extend on current OSTs
+ */
+static bool lod_sel_osts_allowed(const struct lu_env *env,
+ struct lod_object *lo,
+ int index, __u64 extension_size,
+ struct lu_extent *extent,
+ struct lu_extent *comp_extent, int write)
+{
+ struct lod_layout_component *lod_comp = &lo->ldo_comp_entries[index];
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct obd_statfs *sfs = &lod_env_info(env)->lti_osfs;
+ __u64 available = 0;
+ __u64 size;
+ bool ret = true;
+ int i, rc;
- /* Prepare inuse array for composite file */
- rc = lod_prepare_inuse(env, lo);
- if (rc)
- GOTO(out, rc);
- }
+ ENTRY;
- /* Make sure defined layout covers the requested write range. */
- lod_comp = &lo->ldo_comp_entries[lo->ldo_comp_cnt - 1];
- if (lo->ldo_comp_cnt > 1 &&
- lod_comp->llc_extent.e_end != OBD_OBJECT_EOF &&
- lod_comp->llc_extent.e_end < layout->li_extent.e_end) {
- CDEBUG(replay ? D_ERROR : D_LAYOUT,
- "%s: the defined layout [0, %#llx) does not covers "
- "the write range "DEXT"\n",
- lod2obd(d)->obd_name, lod_comp->llc_extent.e_end,
- PEXT(&layout->li_extent));
- GOTO(out, rc = -EINVAL);
+ LASSERT(lod_comp->llc_stripe_count != 0);
+
+ if (write == 0 ||
+ (extent->e_start == 0 && extent->e_end == OBD_OBJECT_EOF)) {
+ /* truncate or append */
+ size = extension_size;
+ } else {
+ /* In case of write op, check the real write extent,
+ * it may be larger than the extension_size */
+ size = roundup(min(extent->e_end, comp_extent->e_end) -
+ max(extent->e_start, comp_extent->e_start),
+ extension_size);
}
+ /* extension_size is file level, so we must divide by stripe count to
+ * compare it to available space on a single OST */
+ size /= lod_comp->llc_stripe_count;
+
+ lod_getref(&lod->lod_ost_descs);
+ for (i = 0; i < lod_comp->llc_stripe_count; i++) {
+ int index = lod_comp->llc_ost_indices[i];
+ struct lod_tgt_desc *ost = OST_TGT(lod, index);
+ struct obd_statfs_info info = { 0 };
+ int j, repeated = 0;
+
+ LASSERT(ost);
+
+ /* Get the number of times this OST repeats in this component.
+ * Note: inter-component repeats are not counted as this is
+ * considered as a rare case: we try to not repeat OST in other
+ * components if possible. */
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ if (index != lod_comp->llc_ost_indices[j])
+ continue;
- CDEBUG(D_LAYOUT, "%s: "DFID": instantiate components "DEXT"\n",
- lod2obd(d)->obd_name, PFID(lu_object_fid(&dt->do_lu)),
- PEXT(&layout->li_extent));
+ /* already handled */
+ if (j < i)
+ break;
- /*
- * Iterate ld->ldo_comp_entries, find the component whose extent under
- * the write range and not instantianted.
- */
- for (i = 0; i < lo->ldo_comp_cnt; i++) {
- lod_comp = &lo->ldo_comp_entries[i];
+ repeated++;
+ }
+ if (j < lod_comp->llc_stripe_count)
+ continue;
- if (lod_comp->llc_extent.e_start >= layout->li_extent.e_end)
+ if (!cfs_bitmap_check(lod->lod_ost_bitmap, index)) {
+ CDEBUG(D_LAYOUT, "ost %d no longer present\n", index);
+ ret = false;
break;
-
- if (!replay) {
- if (lod_comp_inited(lod_comp))
- continue;
- } else {
- /**
- * In replay path, lod_comp is the EA passed by
- * client replay buffer, comp_v1 is the pre-recovery
- * on-disk EA, we'd sift out those components which
- * were init-ed in the on-disk EA.
- */
- if (le32_to_cpu(comp_v1->lcm_entries[i].lcme_flags) &
- LCME_FL_INIT)
- continue;
}
- /*
- * this component hasn't instantiated in normal path, or during
- * replay it needs replay the instantiation.
- */
- /* A released component is being extended */
- if (lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
- GOTO(out, rc = -EINVAL);
+ rc = dt_statfs_info(env, ost->ltd_tgt, sfs, &info);
+ if (rc) {
+ CDEBUG(D_LAYOUT, "statfs failed for ost %d, error %d\n",
+ index, rc);
+ ret = false;
+ break;
+ }
- need_create = true;
+ if (sfs->os_state & OS_STATE_ENOSPC ||
+ sfs->os_state & OS_STATE_READONLY ||
+ sfs->os_state & OS_STATE_DEGRADED) {
+ CDEBUG(D_LAYOUT, "ost %d is not availble for SEL "
+ "extension, state %u\n", index, sfs->os_state);
+ ret = false;
+ break;
+ }
- rc = lod_qos_prep_create(env, lo, NULL, th, i, inuse);
- if (rc)
+ /* In bytes */
+ available = sfs->os_bavail * sfs->os_bsize;
+ /* 'available' is relative to the allocation threshold */
+ available -= (__u64) info.os_reserved_mb_low << 20;
+
+ CDEBUG(D_LAYOUT, "ost %d lowwm: %d highwm: %d, "
+ "%llu %% blocks available, %llu %% blocks free\n",
+ index, info.os_reserved_mb_low, info.os_reserved_mb_high,
+ (100ull * sfs->os_bavail) / sfs->os_blocks,
+ (100ull * sfs->os_bfree) / sfs->os_blocks);
+
+ if (size * repeated > available) {
+ ret = false;
+ CDEBUG(D_LAYOUT, "low space on ost %d, available %llu "
+ "< extension size %llu\n", index, available,
+ extension_size);
break;
+ }
}
+ lod_putref(lod, &lod->lod_ost_descs);
- if (need_create)
- lod_obj_inc_layout_gen(lo);
+ RETURN(ret);
+}
+
+/**
+ * Adjust extents after component removal
+ *
+ * When we remove an extension component, we move the start of the next
+ * component to match the start of the extension component, so no space is left
+ * without layout.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in] lo object
+ * \param[in] max_comp layout component
+ * \param[in] index index of this component
+ *
+ * \retval 0 on success
+ * \retval negative errno on error
+ */
+static void lod_sel_adjust_extents(const struct lu_env *env,
+ struct lod_object *lo,
+ int max_comp, int index)
+{
+ struct lod_layout_component *lod_comp = NULL;
+ struct lod_layout_component *next = NULL;
+ struct lod_layout_component *prev = NULL;
+ __u64 new_start = 0;
+ __u64 start;
+ int i;
+
+ /* Extension space component */
+ lod_comp = &lo->ldo_comp_entries[index];
+ next = &lo->ldo_comp_entries[index + 1];
+ prev = &lo->ldo_comp_entries[index - 1];
+
+ LASSERT(lod_comp != NULL && prev != NULL && next != NULL);
+ LASSERT(lod_comp->llc_flags & LCME_FL_EXTENSION);
+
+ /* Previous is being removed */
+ if (prev && prev->llc_id == LCME_ID_INVAL)
+ new_start = prev->llc_extent.e_start;
else
- GOTO(unlock, rc = -EALREADY);
+ new_start = lod_comp->llc_extent.e_start;
- if (!rc) {
- info->lti_buf.lb_len = lod_comp_md_size(lo, false);
- rc = lod_sub_declare_xattr_set(env, next, &info->lti_buf,
- XATTR_NAME_LOV, 0, th);
+ for (i = index + 1; i < max_comp; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ start = lod_comp->llc_extent.e_start;
+ lod_comp->llc_extent.e_start = new_start;
+
+ /* We only move zero length extendable components */
+ if (!(start == lod_comp->llc_extent.e_end))
+ break;
+
+ LASSERT(!(lod_comp->llc_flags & LCME_FL_INIT));
+
+ lod_comp->llc_extent.e_end = new_start;
}
-out:
- if (rc)
- lod_object_free_striping(env, lo);
+}
-unlock:
- dt_write_unlock(env, next);
+/* Calculate the proposed 'new end' for a component we're extending */
+static __u64 lod_extension_new_end(__u64 extension_size, __u64 extent_end,
+ __u32 stripe_size, __u64 component_end,
+ __u64 extension_end)
+{
+ __u64 new_end;
- RETURN(rc);
+ LASSERT(extension_size != 0 && stripe_size != 0);
+
+ /* Round up to extension size */
+ if (extent_end == OBD_OBJECT_EOF) {
+ new_end = OBD_OBJECT_EOF;
+ } else {
+ /* Add at least extension_size to the previous component_end,
+ * covering the req layout extent */
+ new_end = max(extent_end - component_end, extension_size);
+ new_end = roundup(new_end, extension_size);
+ new_end += component_end;
+
+ /* Component end must be min stripe size aligned */
+ if (new_end % stripe_size) {
+ CDEBUG(D_LAYOUT, "new component end is not aligned "
+ "by the stripe size %u: [%llu, %llu) ext size "
+ "%llu new end %llu, aligning\n",
+ stripe_size, component_end, extent_end,
+ extension_size, new_end);
+ new_end = roundup(new_end, stripe_size);
+ }
+
+ /* Overflow */
+ if (new_end < extent_end)
+ new_end = OBD_OBJECT_EOF;
+ }
+
+ /* Don't extend past the end of the extension component */
+ if (new_end > extension_end)
+ new_end = extension_end;
+
+ return new_end;
}
+/* As lod_sel_handler() could be re-entered for the same component several
+ * times, this is the data for the next call. Fields could be changed to
+ * component indexes when needed, (e.g. if there is no need to instantiate
+ * all the previous components up to the current position) to tell the caller
+ * where to start over from. */
+struct sel_data {
+ int sd_force;
+ int sd_repeat;
+};
+
/**
- * Instantiate layout component objects which covers the intent write offset.
+ * Process extent updates for a particular layout component
+ *
+ * Handle layout updates for a particular extension space component touched by
+ * a layout update operation. Core function of self-extending PFL feature.
+ *
+ * In general, this function processes exactly *one* stage of an extension
+ * operation, modifying the layout accordingly, then returns to the caller.
+ * The caller is responsible for restarting processing with the new layout,
+ * which may repeatedly return to this function until the extension updates
+ * are complete.
+ *
+ * This function does one of a few things to the layout:
+ * 1. Extends the component before the current extension space component to
+ * allow it to accomodate the requested operation (if space/policy permit that
+ * component to continue on its current OSTs)
+ *
+ * 2. If extension of the existing component fails, we do one of two things:
+ * a. If there is a component after the extension space, we remove the
+ * extension space component, move the start of the next component down
+ * accordingly, then notify the caller to restart processing w/the new
+ * layout.
+ * b. If there is no following component, we try repeating the current
+ * component, creating a new component using the current one as a
+ * template (keeping its stripe properties but not specific striping),
+ * and try assigning striping for this component. If there is sufficient
+ * free space on the OSTs chosen for this component, it is instantiated
+ * and i/o continues there.
+ *
+ * If there is not sufficient space on the new OSTs, we remove this new
+ * component & extend the current component.
+ *
+ * Note further that uninited components followed by extension space can be zero
+ * length meaning that we will try to extend them before initializing them, and
+ * if that fails, they will be removed without initialization.
+ *
+ * 3. If we extend to/beyond the end of an extension space component, that
+ * component is exhausted (all of its range has been given to real components),
+ * so we remove it and restart processing.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in,out] lo object to update the layout of
+ * \param[in] extent layout extent for requested operation, update
+ * layout to fit this operation
+ * \param[in] th transaction handle for this operation
+ * \param[in,out] max_comp the highest comp for the portion of the layout
+ * we are operating on (For FLR, the chosen
+ * replica). Updated because we may remove
+ * components.
+ * \param[in] index index of the extension space component we're
+ * working on
+ * \param[in] write if this is write op
+ * \param[in,out] force if the extension is to be forced; set here
+ to force it on the 2nd call for the same
+ extension component
+ *
+ * \retval 0 on success
+ * \retval negative errno on error
*/
-static int lod_layout_change(const struct lu_env *env, struct dt_object *dt,
- struct layout_intent *layout,
- const struct lu_buf *buf, struct thandle *th)
+static int lod_sel_handler(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lu_extent *extent,
+ struct thandle *th, int *max_comp,
+ int index, int write,
+ struct sel_data *sd)
{
- struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ struct lod_device *d = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *lod_comp;
+ struct lod_layout_component *prev;
+ struct lod_layout_component *next = NULL;
+ __u64 extension_size;
+ __u64 new_end = 0;
+ bool repeated;
+ int change = 0;
+ int rc = 0;
+ ENTRY;
- RETURN(lod_striped_create(env, dt, attr, NULL, th));
-}
+ /* First component cannot be extension space */
+ if (index == 0) {
+ CERROR("%s: "DFID" first component cannot be extension space\n",
+ lod2obd(d)->obd_name, PFID(lod_object_fid(lo)));
+ RETURN(-EINVAL);
+ }
-struct dt_object_operations lod_obj_ops = {
- .do_read_lock = lod_read_lock,
- .do_write_lock = lod_write_lock,
- .do_read_unlock = lod_read_unlock,
- .do_write_unlock = lod_write_unlock,
- .do_write_locked = lod_write_locked,
- .do_attr_get = lod_attr_get,
- .do_declare_attr_set = lod_declare_attr_set,
- .do_attr_set = lod_attr_set,
- .do_xattr_get = lod_xattr_get,
+ lod_comp = &lo->ldo_comp_entries[index];
+ prev = &lo->ldo_comp_entries[index - 1];
+ if ((index + 1) < *max_comp)
+ next = &lo->ldo_comp_entries[index + 1];
+
+ /* extension size uses the stripe size field as KiB */
+ extension_size = lod_comp->llc_stripe_size * SEL_UNIT_SIZE;
+
+ CDEBUG(D_LAYOUT, "prev start %llu, extension start %llu, extension end"
+ " %llu, extension size %llu\n", prev->llc_extent.e_start,
+ lod_comp->llc_extent.e_start, lod_comp->llc_extent.e_end,
+ extension_size);
+
+ /* Two extension space components cannot be adjacent & extension space
+ * components cannot be init */
+ if ((prev->llc_flags & LCME_FL_EXTENSION) ||
+ !(ergo(next, !(next->llc_flags & LCME_FL_EXTENSION))) ||
+ lod_comp_inited(lod_comp)) {
+ CERROR("%s: "DFID" invalid extension space components\n",
+ lod2obd(d)->obd_name, PFID(lod_object_fid(lo)));
+ RETURN(-EINVAL);
+ }
+
+ if (!prev->llc_stripe) {
+ CDEBUG(D_LAYOUT, "Previous component not inited\n");
+ info->lti_count = 1;
+ info->lti_comp_idx[0] = index - 1;
+ rc = lod_declare_instantiate_components(env, lo, th);
+ /* ENOSPC tells us we can't use this component. If there is
+ * a next or we are repeating, we either spill over (next) or
+ * extend the original comp (repeat). Otherwise, return the
+ * error to the user. */
+ if (rc == -ENOSPC && (next || sd->sd_repeat))
+ rc = 1;
+ if (rc < 0)
+ RETURN(rc);
+ }
+
+ if (sd->sd_force == 0 && rc == 0)
+ rc = !lod_sel_osts_allowed(env, lo, index - 1,
+ extension_size, extent,
+ &lod_comp->llc_extent, write);
+
+ repeated = !!(sd->sd_repeat);
+ sd->sd_repeat = 0;
+ sd->sd_force = 0;
+
+ /* Extend previous component */
+ if (rc == 0) {
+ new_end = lod_extension_new_end(extension_size, extent->e_end,
+ prev->llc_stripe_size,
+ prev->llc_extent.e_end,
+ lod_comp->llc_extent.e_end);
+
+ CDEBUG(D_LAYOUT, "new end %llu\n", new_end);
+ lod_comp->llc_extent.e_start = new_end;
+ prev->llc_extent.e_end = new_end;
+
+ if (prev->llc_extent.e_end == lod_comp->llc_extent.e_end) {
+ CDEBUG(D_LAYOUT, "Extension component exhausted\n");
+ lod_comp->llc_id = LCME_ID_INVAL;
+ change--;
+ }
+ } else {
+ /* rc == 1, failed to extend current component */
+ LASSERT(rc == 1);
+ if (next) {
+ /* Normal 'spillover' case - Remove the extension
+ * space component & bring down the start of the next
+ * component. */
+ lod_comp->llc_id = LCME_ID_INVAL;
+ change--;
+ if (!(prev->llc_flags & LCME_FL_INIT)) {
+ prev->llc_id = LCME_ID_INVAL;
+ change--;
+ }
+ lod_sel_adjust_extents(env, lo, *max_comp, index);
+ } else if (lod_comp_inited(prev)) {
+ /* If there is no next, and the previous component is
+ * INIT'ed, try repeating the previous component. */
+ LASSERT(repeated == 0);
+ rc = lod_layout_repeat_comp(env, lo, index - 1);
+ if (rc < 0)
+ RETURN(rc);
+ change++;
+ /* The previous component is a repeated component.
+ * Record this so we don't keep trying to repeat it. */
+ sd->sd_repeat = 1;
+ } else {
+ /* If the previous component is not INIT'ed, this may
+ * be a component we have just instantiated but failed
+ * to extend. Or even a repeated component we failed
+ * to prepare a striping for. Do not repeat but instead
+ * remove the repeated component & force the extention
+ * of the original one */
+ sd->sd_force = 1;
+ if (repeated) {
+ prev->llc_id = LCME_ID_INVAL;
+ change--;
+ }
+ }
+ }
+
+ if (change < 0) {
+ rc = lod_layout_del_prep_layout(env, lo, NULL);
+ if (rc < 0)
+ RETURN(rc);
+ LASSERTF(-rc == change,
+ "number deleted %d != requested %d\n", -rc,
+ change);
+ }
+ *max_comp = *max_comp + change;
+
+ /* lod_del_prep_layout reallocates ldo_comp_entries, so we must
+ * refresh these pointers before using them */
+ lod_comp = &lo->ldo_comp_entries[index];
+ prev = &lo->ldo_comp_entries[index - 1];
+ CDEBUG(D_LAYOUT, "After extent updates: prev start %llu, current start "
+ "%llu, current end %llu max_comp %d ldo_comp_cnt %d\n",
+ prev->llc_extent.e_start, lod_comp->llc_extent.e_start,
+ lod_comp->llc_extent.e_end, *max_comp, lo->ldo_comp_cnt);
+
+ /* Layout changed successfully */
+ RETURN(0);
+}
+
+/**
+ * Declare layout extent updates
+ *
+ * Handles extensions. Identifies extension components touched by current
+ * operation and passes them to processing function.
+ *
+ * Restarts with updated layouts from the processing function until the current
+ * operation no longer touches an extension space component.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in,out] lo object to update the layout of
+ * \param[in] extent layout extent for requested operation, update layout to
+ * fit this operation
+ * \param[in] th transaction handle for this operation
+ * \param[in] pick identifies chosen mirror for FLR layouts
+ * \param[in] write if this is write op
+ *
+ * \retval 1 on layout changed, 0 on no change
+ * \retval negative errno on error
+ */
+static int lod_declare_update_extents(const struct lu_env *env,
+ struct lod_object *lo, struct lu_extent *extent,
+ struct thandle *th, int pick, int write)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *lod_comp;
+ bool layout_changed = false;
+ struct sel_data sd = { 0 };
+ int start_index;
+ int i = 0;
+ int max_comp = 0;
+ int rc = 0, rc2;
+ int change = 0;
+ ENTRY;
+
+ /* This makes us work on the components of the chosen mirror */
+ start_index = lo->ldo_mirrors[pick].lme_start;
+ max_comp = lo->ldo_mirrors[pick].lme_end + 1;
+ if (lo->ldo_flr_state == LCM_FL_NONE)
+ LASSERT(start_index == 0 && max_comp == lo->ldo_comp_cnt);
+
+ CDEBUG(D_LAYOUT, "extent->e_start %llu, extent->e_end %llu\n",
+ extent->e_start, extent->e_end);
+ for (i = start_index; i < max_comp; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ /* We've passed all components of interest */
+ if (lod_comp->llc_extent.e_start >= extent->e_end)
+ break;
+
+ if (lod_comp->llc_flags & LCME_FL_EXTENSION) {
+ layout_changed = true;
+ rc = lod_sel_handler(env, lo, extent, th, &max_comp,
+ i, write, &sd);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ /* Nothing has changed behind the prev one */
+ i -= 2;
+ continue;
+ }
+ }
+
+ /* We may have added or removed components. If so, we must update the
+ * start & ends of all the mirrors after the current one, and the end
+ * of the current mirror. */
+ change = max_comp - 1 - lo->ldo_mirrors[pick].lme_end;
+ if (change) {
+ lo->ldo_mirrors[pick].lme_end += change;
+ for (i = pick + 1; i < lo->ldo_mirror_count; i++) {
+ lo->ldo_mirrors[i].lme_start += change;
+ lo->ldo_mirrors[i].lme_end += change;
+ }
+ }
+
+ EXIT;
+out:
+ /* The amount of components has changed, adjust the lti_comp_idx */
+ rc2 = lod_layout_data_init(info, lo->ldo_comp_cnt);
+
+ return rc < 0 ? rc : rc2 < 0 ? rc2 : layout_changed;
+}
+
+/* If striping is already instantiated or INIT'ed DOM? */
+static bool lod_is_instantiation_needed(struct lod_layout_component *comp)
+{
+ return !(((lov_pattern(comp->llc_pattern) == LOV_PATTERN_MDT) &&
+ lod_comp_inited(comp)) || comp->llc_stripe);
+}
+
+/**
+ * Declare layout update for a non-FLR layout.
+ *
+ * \param[in] env execution environment for this thread
+ * \param[in,out] lo object to update the layout of
+ * \param[in] layout layout intent for requested operation, "update" is
+ * a process of reacting to this
+ * \param[in] buf buffer containing lov ea (see comment on usage inline)
+ * \param[in] th transaction handle for this operation
+ *
+ * \retval 0 on success
+ * \retval negative errno on error
+ */
+static int lod_declare_update_plain(const struct lu_env *env,
+ struct lod_object *lo, struct layout_intent *layout,
+ const struct lu_buf *buf, struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *d = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_layout_component *lod_comp;
+ struct lov_comp_md_v1 *comp_v1 = NULL;
+ bool layout_changed = false;
+ bool replay = false;
+ int i, rc;
+ ENTRY;
+
+ LASSERT(lo->ldo_flr_state == LCM_FL_NONE);
+
+ /*
+ * In case the client is passing lovea, which only happens during
+ * the replay of layout intent write RPC for now, we may need to
+ * parse the lovea and apply new layout configuration.
+ */
+ if (buf && buf->lb_len) {
+ struct lov_user_md_v1 *v1 = buf->lb_buf;
+
+ if (v1->lmm_magic != (LOV_MAGIC_DEFINED | LOV_MAGIC_COMP_V1) &&
+ v1->lmm_magic != __swab32(LOV_MAGIC_DEFINED |
+ LOV_MAGIC_COMP_V1)) {
+ CERROR("%s: the replay buffer of layout extend "
+ "(magic %#x) does not contain expected "
+ "composite layout.\n",
+ lod2obd(d)->obd_name, v1->lmm_magic);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ rc = lod_use_defined_striping(env, lo, buf);
+ if (rc)
+ GOTO(out, rc);
+ lo->ldo_comp_cached = 1;
+
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
+ GOTO(out, rc);
+ /* old on-disk EA is stored in info->lti_buf */
+ comp_v1 = (struct lov_comp_md_v1 *)info->lti_buf.lb_buf;
+ replay = true;
+ layout_changed = true;
+
+ rc = lod_layout_data_init(info, lo->ldo_comp_cnt);
+ if (rc)
+ GOTO(out, rc);
+ } else {
+ /* non replay path */
+ rc = lod_striping_load(env, lo);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ /* Make sure defined layout covers the requested write range. */
+ lod_comp = &lo->ldo_comp_entries[lo->ldo_comp_cnt - 1];
+ if (lo->ldo_comp_cnt > 1 &&
+ lod_comp->llc_extent.e_end != OBD_OBJECT_EOF &&
+ lod_comp->llc_extent.e_end < layout->li_extent.e_end) {
+ CDEBUG_LIMIT(replay ? D_ERROR : D_LAYOUT,
+ "%s: the defined layout [0, %#llx) does not "
+ "covers the write range "DEXT"\n",
+ lod2obd(d)->obd_name, lod_comp->llc_extent.e_end,
+ PEXT(&layout->li_extent));
+ GOTO(out, rc = -EINVAL);
+ }
+
+ CDEBUG(D_LAYOUT, "%s: "DFID": update components "DEXT"\n",
+ lod2obd(d)->obd_name, PFID(lod_object_fid(lo)),
+ PEXT(&layout->li_extent));
+
+ if (!replay) {
+ rc = lod_declare_update_extents(env, lo, &layout->li_extent,
+ th, 0, layout->li_opc == LAYOUT_INTENT_WRITE);
+ if (rc < 0)
+ GOTO(out, rc);
+ else if (rc)
+ layout_changed = true;
+ }
+
+ /*
+ * Iterate ld->ldo_comp_entries, find the component whose extent under
+ * the write range and not instantianted.
+ */
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (lod_comp->llc_extent.e_start >= layout->li_extent.e_end)
+ break;
+
+ if (!replay) {
+ /* If striping is instantiated or INIT'ed DOM skip */
+ if (!lod_is_instantiation_needed(lod_comp))
+ continue;
+ } else {
+ /**
+ * In replay path, lod_comp is the EA passed by
+ * client replay buffer, comp_v1 is the pre-recovery
+ * on-disk EA, we'd sift out those components which
+ * were init-ed in the on-disk EA.
+ */
+ if (le32_to_cpu(comp_v1->lcm_entries[i].lcme_flags) &
+ LCME_FL_INIT)
+ continue;
+ }
+ /*
+ * this component hasn't instantiated in normal path, or during
+ * replay it needs replay the instantiation.
+ */
+
+ /* A released component is being extended */
+ if (lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
+ GOTO(out, rc = -EINVAL);
+
+ LASSERT(info->lti_comp_idx != NULL);
+ info->lti_comp_idx[info->lti_count++] = i;
+ layout_changed = true;
+ }
+
+ if (!layout_changed)
+ RETURN(-EALREADY);
+
+ lod_obj_inc_layout_gen(lo);
+ rc = lod_declare_instantiate_components(env, lo, th);
+ EXIT;
+out:
+ if (rc)
+ lod_striping_free(env, lo);
+ return rc;
+}
+
+static inline int lod_comp_index(struct lod_object *lo,
+ struct lod_layout_component *lod_comp)
+{
+ LASSERT(lod_comp >= lo->ldo_comp_entries &&
+ lod_comp <= &lo->ldo_comp_entries[lo->ldo_comp_cnt - 1]);
+
+ return lod_comp - lo->ldo_comp_entries;
+}
+
+/**
+ * Stale other mirrors by writing extent.
+ */
+static int lod_stale_components(const struct lu_env *env, struct lod_object *lo,
+ int primary, struct lu_extent *extent,
+ struct thandle *th)
+{
+ struct lod_layout_component *pri_comp, *lod_comp;
+ struct lu_extent pri_extent;
+ int rc = 0;
+ int i;
+ ENTRY;
+
+ /* The writing extent decides which components in the primary
+ * are affected... */
+ CDEBUG(D_LAYOUT, "primary mirror %d, "DEXT"\n", primary, PEXT(extent));
+
+restart:
+ lod_foreach_mirror_comp(pri_comp, lo, primary) {
+ if (!lu_extent_is_overlapped(extent, &pri_comp->llc_extent))
+ continue;
+
+ CDEBUG(D_LAYOUT, "primary comp %u "DEXT"\n",
+ lod_comp_index(lo, pri_comp),
+ PEXT(&pri_comp->llc_extent));
+
+ pri_extent.e_start = pri_comp->llc_extent.e_start;
+ pri_extent.e_end = pri_comp->llc_extent.e_end;
+
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (i == primary)
+ continue;
+ rc = lod_declare_update_extents(env, lo, &pri_extent,
+ th, i, 0);
+ /* if update_extents changed the layout, it may have
+ * reallocated the component array, so start over to
+ * avoid using stale pointers */
+ if (rc == 1)
+ goto restart;
+ if (rc < 0)
+ RETURN(rc);
+
+ /* ... and then stale other components that are
+ * overlapping with primary components */
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lu_extent_is_overlapped(
+ &pri_extent,
+ &lod_comp->llc_extent))
+ continue;
+
+ CDEBUG(D_LAYOUT, "stale: %u / %u\n",
+ i, lod_comp_index(lo, lod_comp));
+
+ lod_comp->llc_flags |= LCME_FL_STALE;
+ lo->ldo_mirrors[i].lme_stale = 1;
+ }
+ }
+ }
+
+ RETURN(rc);
+}
+
+/**
+ * check an OST's availability
+ * \param[in] env execution environment
+ * \param[in] lo lod object
+ * \param[in] dt dt object
+ * \param[in] index mirror index
+ *
+ * \retval negative if failed
+ * \retval 1 if \a dt is available
+ * \retval 0 if \a dt is not available
+ */
+static inline int lod_check_ost_avail(const struct lu_env *env,
+ struct lod_object *lo,
+ struct dt_object *dt, int index)
+{
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_tgt_desc *ost;
+ __u32 idx;
+ int type = LU_SEQ_RANGE_OST;
+ int rc;
+
+ rc = lod_fld_lookup(env, lod, lu_object_fid(&dt->do_lu), &idx, &type);
+ if (rc < 0) {
+ CERROR("%s: can't locate "DFID":rc = %d\n",
+ lod2obd(lod)->obd_name, PFID(lu_object_fid(&dt->do_lu)),
+ rc);
+ return rc;
+ }
+
+ ost = OST_TGT(lod, idx);
+ if (ost->ltd_statfs.os_state &
+ (OS_STATE_READONLY | OS_STATE_ENOSPC | OS_STATE_ENOINO |
+ OS_STATE_NOPRECREATE) ||
+ ost->ltd_active == 0) {
+ CDEBUG(D_LAYOUT, DFID ": mirror %d OST%d unavail, rc = %d\n",
+ PFID(lod_object_fid(lo)), index, idx, rc);
+ return 0;
+ }
+
+ return 1;
+}
+
+/**
+ * Pick primary mirror for write
+ * \param[in] env execution environment
+ * \param[in] lo object
+ * \param[in] extent write range
+ */
+static int lod_primary_pick(const struct lu_env *env, struct lod_object *lo,
+ struct lu_extent *extent)
+{
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ unsigned int seq = 0;
+ struct lod_layout_component *lod_comp;
+ int i, j, rc;
+ int picked = -1, second_pick = -1, third_pick = -1;
+ ENTRY;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_FLR_RANDOM_PICK_MIRROR)) {
+ get_random_bytes(&seq, sizeof(seq));
+ seq %= lo->ldo_mirror_count;
+ }
+
+ /**
+ * Pick a mirror as the primary, and check the availability of OSTs.
+ *
+ * This algo can be revised later after knowing the topology of
+ * cluster.
+ */
+ lod_qos_statfs_update(env, lod, &lod->lod_ost_descs);
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ bool ost_avail = true;
+ int index = (i + seq) % lo->ldo_mirror_count;
+
+ if (lo->ldo_mirrors[index].lme_stale) {
+ CDEBUG(D_LAYOUT, DFID": mirror %d stale\n",
+ PFID(lod_object_fid(lo)), index);
+ continue;
+ }
+
+ /* 2nd pick is for the primary mirror containing unavail OST */
+ if (lo->ldo_mirrors[index].lme_primary && second_pick < 0)
+ second_pick = index;
+
+ /* 3rd pick is for non-primary mirror containing unavail OST */
+ if (second_pick < 0 && third_pick < 0)
+ third_pick = index;
+
+ /**
+ * we found a non-primary 1st pick, we'd like to find a
+ * potential pirmary mirror.
+ */
+ if (picked >= 0 && !lo->ldo_mirrors[index].lme_primary)
+ continue;
+
+ /* check the availability of OSTs */
+ lod_foreach_mirror_comp(lod_comp, lo, index) {
+ if (!lod_comp_inited(lod_comp) || !lod_comp->llc_stripe)
+ continue;
+
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ struct dt_object *dt = lod_comp->llc_stripe[j];
+
+ rc = lod_check_ost_avail(env, lo, dt, index);
+ if (rc < 0)
+ RETURN(rc);
+
+ ost_avail = !!rc;
+ if (!ost_avail)
+ break;
+ } /* for all dt object in one component */
+ if (!ost_avail)
+ break;
+ } /* for all components in a mirror */
+
+ /**
+ * the OSTs where allocated objects locates in the components
+ * of the mirror are available.
+ */
+ if (!ost_avail)
+ continue;
+
+ /* this mirror has all OSTs available */
+ picked = index;
+
+ /**
+ * primary with all OSTs are available, this is the perfect
+ * 1st pick.
+ */
+ if (lo->ldo_mirrors[index].lme_primary)
+ break;
+ } /* for all mirrors */
+
+ /* failed to pick a sound mirror, lower our expectation */
+ if (picked < 0)
+ picked = second_pick;
+ if (picked < 0)
+ picked = third_pick;
+ if (picked < 0)
+ RETURN(-ENODATA);
+
+ RETURN(picked);
+}
+
+static int lod_prepare_resync_mirror(const struct lu_env *env,
+ struct lod_object *lo,
+ __u16 mirror_id)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *lod_comp;
+ bool neg = !!(MIRROR_ID_NEG & mirror_id);
+ int i;
+
+ mirror_id &= ~MIRROR_ID_NEG;
+
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if ((!neg && lo->ldo_mirrors[i].lme_id != mirror_id) ||
+ (neg && lo->ldo_mirrors[i].lme_id == mirror_id))
+ continue;
+
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (lod_comp_inited(lod_comp))
+ continue;
+
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * figure out the components should be instantiated for resync.
+ */
+static int lod_prepare_resync(const struct lu_env *env, struct lod_object *lo,
+ struct lu_extent *extent)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *lod_comp;
+ unsigned int need_sync = 0;
+ int i;
+
+ CDEBUG(D_LAYOUT,
+ DFID": instantiate all stale components in "DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(extent));
+
+ /**
+ * instantiate all components within this extent, even non-stale
+ * components.
+ */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (!lo->ldo_mirrors[i].lme_stale)
+ continue;
+
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lu_extent_is_overlapped(extent,
+ &lod_comp->llc_extent))
+ break;
+
+ need_sync++;
+
+ if (lod_comp_inited(lod_comp))
+ continue;
+
+ CDEBUG(D_LAYOUT, "resync instantiate %d / %d\n",
+ i, lod_comp_index(lo, lod_comp));
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
+ }
+
+ return need_sync ? 0 : -EALREADY;
+}
+
+static int lod_declare_update_rdonly(const struct lu_env *env,
+ struct lod_object *lo, struct md_layout_change *mlc,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_attr *layout_attr = &info->lti_layout_attr;
+ struct lod_layout_component *lod_comp;
+ struct lu_extent extent = { 0 };
+ int rc;
+ ENTRY;
+
+ LASSERT(lo->ldo_flr_state == LCM_FL_RDONLY);
+ LASSERT(mlc->mlc_opc == MD_LAYOUT_WRITE ||
+ mlc->mlc_opc == MD_LAYOUT_RESYNC);
+ LASSERT(lo->ldo_mirror_count > 0);
+
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE) {
+ struct layout_intent *layout = mlc->mlc_intent;
+ int write = layout->li_opc == LAYOUT_INTENT_WRITE;
+ int picked;
+
+ extent = layout->li_extent;
+ CDEBUG(D_LAYOUT, DFID": trying to write :"DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(&extent));
+
+ picked = lod_primary_pick(env, lo, &extent);
+ if (picked < 0)
+ RETURN(picked);
+
+ CDEBUG(D_LAYOUT, DFID": picked mirror id %u as primary\n",
+ PFID(lod_object_fid(lo)),
+ lo->ldo_mirrors[picked].lme_id);
+
+ /* Update extents of primary before staling */
+ rc = lod_declare_update_extents(env, lo, &extent, th, picked,
+ write);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ if (layout->li_opc == LAYOUT_INTENT_TRUNC) {
+ /**
+ * trunc transfers [0, size) in the intent extent, we'd
+ * stale components overlapping [size, eof).
+ */
+ extent.e_start = extent.e_end;
+ extent.e_end = OBD_OBJECT_EOF;
+ }
+
+ /* stale overlapping components from other mirrors */
+ rc = lod_stale_components(env, lo, picked, &extent, th);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ /* restore truncate intent extent */
+ if (layout->li_opc == LAYOUT_INTENT_TRUNC)
+ extent.e_end = extent.e_start;
+
+ /* instantiate components for the picked mirror, start from 0 */
+ extent.e_start = 0;
+
+ lod_foreach_mirror_comp(lod_comp, lo, picked) {
+ if (!lu_extent_is_overlapped(&extent,
+ &lod_comp->llc_extent))
+ break;
+
+ if (!lod_is_instantiation_needed(lod_comp))
+ continue;
+
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
+
+ lo->ldo_flr_state = LCM_FL_WRITE_PENDING;
+ } else { /* MD_LAYOUT_RESYNC */
+ int i;
+
+ /**
+ * could contain multiple non-stale mirrors, so we need to
+ * prep uninited all components assuming any non-stale mirror
+ * could be picked as the primary mirror.
+ */
+ if (mlc->mlc_mirror_id == 0) {
+ /* normal resync */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (lo->ldo_mirrors[i].lme_stale)
+ continue;
+
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lod_comp_inited(lod_comp))
+ break;
+
+ if (extent.e_end <
+ lod_comp->llc_extent.e_end)
+ extent.e_end =
+ lod_comp->llc_extent.e_end;
+ }
+ }
+ rc = lod_prepare_resync(env, lo, &extent);
+ if (rc)
+ GOTO(out, rc);
+ } else {
+ /* mirror write, try to init its all components */
+ rc = lod_prepare_resync_mirror(env, lo,
+ mlc->mlc_mirror_id);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ /* change the file state to SYNC_PENDING */
+ lo->ldo_flr_state = LCM_FL_SYNC_PENDING;
+ }
+
+ /* Reset the layout version once it's becoming too large.
+ * This way it can make sure that the layout version is
+ * monotonously increased in this writing era. */
+ lod_obj_inc_layout_gen(lo);
+ if (lo->ldo_layout_gen > (LCME_ID_MAX >> 1)) {
+ __u32 layout_version;
+
+ get_random_bytes(&layout_version, sizeof(layout_version));
+ lo->ldo_layout_gen = layout_version & 0xffff;
+ }
+
+ rc = lod_declare_instantiate_components(env, lo, th);
+ if (rc)
+ GOTO(out, rc);
+
+ layout_attr->la_valid = LA_LAYOUT_VERSION;
+ layout_attr->la_layout_version = 0; /* set current version */
+ if (mlc->mlc_opc == MD_LAYOUT_RESYNC)
+ layout_attr->la_layout_version = LU_LAYOUT_RESYNC;
+ rc = lod_declare_attr_set(env, &lo->ldo_obj, layout_attr, th);
+ if (rc)
+ GOTO(out, rc);
+
+out:
+ if (rc)
+ lod_striping_free(env, lo);
+ RETURN(rc);
+}
+
+static int lod_declare_update_write_pending(const struct lu_env *env,
+ struct lod_object *lo, struct md_layout_change *mlc,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_attr *layout_attr = &info->lti_layout_attr;
+ struct lod_layout_component *lod_comp;
+ struct lu_extent extent = { 0 };
+ int primary = -1;
+ int i;
+ int rc;
+ ENTRY;
+
+ LASSERT(lo->ldo_flr_state == LCM_FL_WRITE_PENDING);
+ LASSERT(mlc->mlc_opc == MD_LAYOUT_WRITE ||
+ mlc->mlc_opc == MD_LAYOUT_RESYNC);
+
+ /* look for the primary mirror */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (lo->ldo_mirrors[i].lme_stale)
+ continue;
+
+ LASSERTF(primary < 0, DFID " has multiple primary: %u / %u",
+ PFID(lod_object_fid(lo)),
+ lo->ldo_mirrors[i].lme_id,
+ lo->ldo_mirrors[primary].lme_id);
+
+ primary = i;
+ }
+ if (primary < 0) {
+ CERROR(DFID ": doesn't have a primary mirror\n",
+ PFID(lod_object_fid(lo)));
+ GOTO(out, rc = -ENODATA);
+ }
+
+ CDEBUG(D_LAYOUT, DFID": found primary %u\n",
+ PFID(lod_object_fid(lo)), lo->ldo_mirrors[primary].lme_id);
+
+ LASSERT(!lo->ldo_mirrors[primary].lme_stale);
+
+ /* for LAYOUT_WRITE opc, it has to do the following operations:
+ * 1. stale overlapping componets from stale mirrors;
+ * 2. instantiate components of the primary mirror;
+ * 3. transfter layout version to all objects of the primary;
+ *
+ * for LAYOUT_RESYNC opc, it will do:
+ * 1. instantiate components of all stale mirrors;
+ * 2. transfer layout version to all objects to close write era. */
+
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE) {
+ struct layout_intent *layout = mlc->mlc_intent;
+ int write = layout->li_opc == LAYOUT_INTENT_WRITE;
+
+ LASSERT(mlc->mlc_intent != NULL);
+
+ extent = mlc->mlc_intent->li_extent;
+
+ CDEBUG(D_LAYOUT, DFID": intent to write: "DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(&extent));
+
+ /* 1. Update extents of primary before staling */
+ rc = lod_declare_update_extents(env, lo, &extent, th, primary,
+ write);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ if (mlc->mlc_intent->li_opc == LAYOUT_INTENT_TRUNC) {
+ /**
+ * trunc transfers [0, size) in the intent extent, we'd
+ * stale components overlapping [size, eof).
+ */
+ extent.e_start = extent.e_end;
+ extent.e_end = OBD_OBJECT_EOF;
+ }
+
+ /* 2. stale overlapping components */
+ rc = lod_stale_components(env, lo, primary, &extent, th);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ /* 3. find the components which need instantiating.
+ * instantiate [0, mlc->mlc_intent->e_end) */
+
+ /* restore truncate intent extent */
+ if (mlc->mlc_intent->li_opc == LAYOUT_INTENT_TRUNC)
+ extent.e_end = extent.e_start;
+ extent.e_start = 0;
+
+ lod_foreach_mirror_comp(lod_comp, lo, primary) {
+ if (!lu_extent_is_overlapped(&extent,
+ &lod_comp->llc_extent))
+ break;
+
+ if (!lod_is_instantiation_needed(lod_comp))
+ continue;
+
+ CDEBUG(D_LAYOUT, "write instantiate %d / %d\n",
+ primary, lod_comp_index(lo, lod_comp));
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
+ } else { /* MD_LAYOUT_RESYNC */
+ if (mlc->mlc_mirror_id == 0) {
+ /* normal resync */
+ lod_foreach_mirror_comp(lod_comp, lo, primary) {
+ if (!lod_comp_inited(lod_comp))
+ break;
+
+ extent.e_end = lod_comp->llc_extent.e_end;
+ }
+
+ rc = lod_prepare_resync(env, lo, &extent);
+ if (rc)
+ GOTO(out, rc);
+ } else {
+ /* mirror write, try to init its all components */
+ rc = lod_prepare_resync_mirror(env, lo,
+ mlc->mlc_mirror_id);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ /* change the file state to SYNC_PENDING */
+ lo->ldo_flr_state = LCM_FL_SYNC_PENDING;
+ }
+
+ rc = lod_declare_instantiate_components(env, lo, th);
+ if (rc)
+ GOTO(out, rc);
+
+ /* 3. transfer layout version to OST objects.
+ * transfer new layout version to OST objects so that stale writes
+ * can be denied. It also ends an era of writing by setting
+ * LU_LAYOUT_RESYNC. Normal client can never use this bit to
+ * send write RPC; only resync RPCs could do it. */
+ layout_attr->la_valid = LA_LAYOUT_VERSION;
+ layout_attr->la_layout_version = 0; /* set current version */
+ if (mlc->mlc_opc == MD_LAYOUT_RESYNC)
+ layout_attr->la_layout_version = LU_LAYOUT_RESYNC;
+ rc = lod_declare_attr_set(env, &lo->ldo_obj, layout_attr, th);
+ if (rc)
+ GOTO(out, rc);
+
+ lod_obj_inc_layout_gen(lo);
+out:
+ if (rc)
+ lod_striping_free(env, lo);
+ RETURN(rc);
+}
+
+static int lod_declare_update_sync_pending(const struct lu_env *env,
+ struct lod_object *lo, struct md_layout_change *mlc,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ unsigned sync_components = 0;
+ unsigned resync_components = 0;
+ int i;
+ int rc;
+ ENTRY;
+
+ LASSERT(lo->ldo_flr_state == LCM_FL_SYNC_PENDING);
+ LASSERT(mlc->mlc_opc == MD_LAYOUT_RESYNC_DONE ||
+ mlc->mlc_opc == MD_LAYOUT_WRITE);
+
+ CDEBUG(D_LAYOUT, DFID ": received op %d in sync pending\n",
+ PFID(lod_object_fid(lo)), mlc->mlc_opc);
+
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE) {
+ CDEBUG(D_LAYOUT, DFID": cocurrent write to sync pending\n",
+ PFID(lod_object_fid(lo)));
+
+ lo->ldo_flr_state = LCM_FL_WRITE_PENDING;
+ return lod_declare_update_write_pending(env, lo, mlc, th);
+ }
+
+ /* MD_LAYOUT_RESYNC_DONE */
+
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ struct lod_layout_component *lod_comp;
+ int j;
+
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (!(lod_comp->llc_flags & LCME_FL_STALE)) {
+ sync_components++;
+ continue;
+ }
+
+ for (j = 0; j < mlc->mlc_resync_count; j++) {
+ if (lod_comp->llc_id != mlc->mlc_resync_ids[j])
+ continue;
+
+ mlc->mlc_resync_ids[j] = LCME_ID_INVAL;
+ lod_comp->llc_flags &= ~LCME_FL_STALE;
+ resync_components++;
+ break;
+ }
+ }
+
+ /* valid check */
+ for (i = 0; i < mlc->mlc_resync_count; i++) {
+ if (mlc->mlc_resync_ids[i] == LCME_ID_INVAL)
+ continue;
+
+ CDEBUG(D_LAYOUT, DFID": lcme id %u (%d / %zd) not exist "
+ "or already synced\n", PFID(lod_object_fid(lo)),
+ mlc->mlc_resync_ids[i], i, mlc->mlc_resync_count);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (!sync_components || (mlc->mlc_resync_count && !resync_components)) {
+ CDEBUG(D_LAYOUT, DFID": no mirror in sync\n",
+ PFID(lod_object_fid(lo)));
+
+ /* tend to return an error code here to prevent
+ * the MDT from setting SoM attribute */
+ GOTO(out, rc = -EINVAL);
+ }
+
+ CDEBUG(D_LAYOUT, DFID": synced %u resynced %u/%zu components\n",
+ PFID(lod_object_fid(lo)),
+ sync_components, resync_components, mlc->mlc_resync_count);
+
+ lo->ldo_flr_state = LCM_FL_RDONLY;
+ lod_obj_inc_layout_gen(lo);
+
+ info->lti_buf.lb_len = lod_comp_md_size(lo, false);
+ rc = lod_sub_declare_xattr_set(env, lod_object_child(lo),
+ &info->lti_buf, XATTR_NAME_LOV, 0, th);
+ EXIT;
+
+out:
+ if (rc)
+ lod_striping_free(env, lo);
+ RETURN(rc);
+}
+
+static int lod_declare_layout_change(const struct lu_env *env,
+ struct dt_object *dt, struct md_layout_change *mlc,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+ ENTRY;
+
+ if (!S_ISREG(dt->do_lu.lo_header->loh_attr) || !dt_object_exists(dt) ||
+ dt_object_remote(dt_object_child(dt)))
+ RETURN(-EINVAL);
+
+ rc = lod_striping_load(env, lo);
+ if (rc)
+ GOTO(out, rc);
+
+ LASSERT(lo->ldo_comp_cnt > 0);
+
+ rc = lod_layout_data_init(info, lo->ldo_comp_cnt);
+ if (rc)
+ GOTO(out, rc);
+
+ switch (lo->ldo_flr_state) {
+ case LCM_FL_NONE:
+ rc = lod_declare_update_plain(env, lo, mlc->mlc_intent,
+ &mlc->mlc_buf, th);
+ break;
+ case LCM_FL_RDONLY:
+ rc = lod_declare_update_rdonly(env, lo, mlc, th);
+ break;
+ case LCM_FL_WRITE_PENDING:
+ rc = lod_declare_update_write_pending(env, lo, mlc, th);
+ break;
+ case LCM_FL_SYNC_PENDING:
+ rc = lod_declare_update_sync_pending(env, lo, mlc, th);
+ break;
+ default:
+ rc = -ENOTSUPP;
+ break;
+ }
+out:
+ RETURN(rc);
+}
+
+/**
+ * Instantiate layout component objects which covers the intent write offset.
+ */
+static int lod_layout_change(const struct lu_env *env, struct dt_object *dt,
+ struct md_layout_change *mlc, struct thandle *th)
+{
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ struct lu_attr *layout_attr = &lod_env_info(env)->lti_layout_attr;
+ struct lod_object *lo = lod_dt_obj(dt);
+ int rc;
+
+ rc = lod_striped_create(env, dt, attr, NULL, th);
+ if (!rc && layout_attr->la_valid & LA_LAYOUT_VERSION) {
+ layout_attr->la_layout_version |= lo->ldo_layout_gen;
+ rc = lod_attr_set(env, dt, layout_attr, th);
+ }
+
+ return rc;
+}
+
+struct dt_object_operations lod_obj_ops = {
+ .do_read_lock = lod_read_lock,
+ .do_write_lock = lod_write_lock,
+ .do_read_unlock = lod_read_unlock,
+ .do_write_unlock = lod_write_unlock,
+ .do_write_locked = lod_write_locked,
+ .do_attr_get = lod_attr_get,
+ .do_declare_attr_set = lod_declare_attr_set,
+ .do_attr_set = lod_attr_set,
+ .do_xattr_get = lod_xattr_get,
.do_declare_xattr_set = lod_declare_xattr_set,
.do_xattr_set = lod_xattr_set,
.do_declare_xattr_del = lod_declare_xattr_del,
*/
static ssize_t lod_write(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *buf, loff_t *pos,
- struct thandle *th, int iq)
+ struct thandle *th)
{
LASSERT(S_ISREG(dt->do_lu.lo_header->loh_attr) ||
S_ISLNK(dt->do_lu.lo_header->loh_attr));
- return lod_sub_write(env, dt_object_child(dt), buf, pos, th, iq);
+ return lod_sub_write(env, dt_object_child(dt), buf, pos, th);
}
static int lod_declare_punch(const struct lu_env *env, struct dt_object *dt,
ENTRY;
rc = lod_fld_lookup(env, lod, lu_object_fid(lo), &idx, &type);
- if (rc != 0) {
- /* Note: Sometimes, it will Return EAGAIN here, see
- * ptrlpc_import_delay_req(), which might confuse
- * lu_object_find_at() and make it wait there incorrectly.
- * so we convert it to EIO here.*/
- if (rc == -EAGAIN)
- rc = -EIO;
-
+ if (rc != 0)
RETURN(rc);
- }
if (type == LU_SEQ_RANGE_MDT &&
idx == lu_site2seq(lo->lo_dev->ld_site)->ss_node_id) {
/**
*
+ * Alloc cached foreign LOV
+ *
+ * \param[in] lo object
+ * \param[in] size size of foreign LOV
+ *
+ * \retval 0 on success
+ * \retval negative if failed
+ */
+int lod_alloc_foreign_lov(struct lod_object *lo, size_t size)
+{
+ OBD_ALLOC_LARGE(lo->ldo_foreign_lov, size);
+ if (lo->ldo_foreign_lov == NULL)
+ return -ENOMEM;
+ lo->ldo_foreign_lov_size = size;
+ lo->ldo_is_foreign = 1;
+ return 0;
+}
+
+/**
+ *
+ * Free cached foreign LOV
+ *
+ * \param[in] lo object
+ */
+void lod_free_foreign_lov(struct lod_object *lo)
+{
+ if (lo->ldo_foreign_lov != NULL)
+ OBD_FREE_LARGE(lo->ldo_foreign_lov, lo->ldo_foreign_lov_size);
+ lo->ldo_foreign_lov = NULL;
+ lo->ldo_foreign_lov_size = 0;
+ lo->ldo_is_foreign = 0;
+}
+
+/**
+ *
+ * Free cached foreign LMV
+ *
+ * \param[in] lo object
+ */
+void lod_free_foreign_lmv(struct lod_object *lo)
+{
+ if (lo->ldo_foreign_lmv != NULL)
+ OBD_FREE_LARGE(lo->ldo_foreign_lmv, lo->ldo_foreign_lmv_size);
+ lo->ldo_foreign_lmv = NULL;
+ lo->ldo_foreign_lmv_size = 0;
+ lo->ldo_dir_is_foreign = 0;
+}
+
+/**
+ *
* Release resources associated with striping.
*
* If the object is striped (regular or directory), then release
* \param[in] env execution environment
* \param[in] lo object
*/
-void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo)
+void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo)
{
struct lod_layout_component *lod_comp;
int i, j;
- if (lo->ldo_stripe != NULL) {
+ if (unlikely(lo->ldo_is_foreign)) {
+ lod_free_foreign_lov(lo);
+ lo->ldo_comp_cached = 0;
+ } else if (unlikely(lo->ldo_dir_is_foreign)) {
+ lod_free_foreign_lmv(lo);
+ lo->ldo_dir_stripe_loaded = 0;
+ } else if (lo->ldo_stripe != NULL) {
LASSERT(lo->ldo_comp_entries == NULL);
LASSERT(lo->ldo_dir_stripes_allocated > 0);
sizeof(struct dt_object *) *
lod_comp->llc_stripes_allocated);
lod_comp->llc_stripe = NULL;
+ OBD_FREE(lod_comp->llc_ost_indices,
+ sizeof(__u32) *
+ lod_comp->llc_stripes_allocated);
+ lod_comp->llc_ost_indices = NULL;
lod_comp->llc_stripes_allocated = 0;
}
lod_free_comp_entries(lo);
}
}
+void lod_striping_free(const struct lu_env *env, struct lod_object *lo)
+{
+ mutex_lock(&lo->ldo_layout_mutex);
+ lod_striping_free_nolock(env, lo);
+ mutex_unlock(&lo->ldo_layout_mutex);
+}
+
/**
* Implementation of lu_object_operations::loo_object_free.
*
struct lod_object *lo = lu2lod_obj(o);
/* release all underlying object pinned */
- lod_object_free_striping(env, lo);
+ lod_striping_free(env, lo);
lu_object_fini(o);
OBD_SLAB_FREE_PTR(lo, lod_object_kmem);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff