* 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.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
struct obd_export *exp = ost_desc->ltd_exp;
int rc = 0, found = 0;
struct list_head *list;
+ __u32 id = 0;
ENTRY;
down_write(&lod->lod_qos.lq_rw_sem);
found++;
break;
}
+ if (oss->lqo_id > id)
+ id = oss->lqo_id;
}
if (!found) {
GOTO(out, rc = -ENOMEM);
memcpy(&oss->lqo_uuid, &exp->exp_connection->c_remote_uuid,
sizeof(oss->lqo_uuid));
+ ++id;
+ oss->lqo_id = id;
} else {
/* Assume we have to move this one */
list_del(&oss->lqo_oss_list);
if (sfs->os_state & OS_STATE_READONLY)
rc = -EROFS;
+ /* object precreation is skipped on the OST with max_create_count=0 */
+ if (sfs->os_state & OS_STATE_NOPRECREATE)
+ rc = -ENOBUFS;
+
/* check whether device has changed state (active, inactive) */
if (rc != 0 && ost->ltd_active) {
/* turned inactive? */
* \param[in] env execution environment for this thread
* \param[in] lod LOD device
*/
-static void lod_qos_statfs_update(const struct lu_env *env,
- struct lod_device *lod)
+void lod_qos_statfs_update(const struct lu_env *env, struct lod_device *lod)
{
struct obd_device *obd = lod2obd(lod);
- struct ost_pool *osts = &(lod->lod_pool_info);
- unsigned int i;
- int idx;
- __u64 max_age, avail;
+ struct ost_pool *osts = &(lod->lod_pool_info);
+ time64_t max_age;
+ unsigned int i;
+ u64 avail;
+ int idx;
ENTRY;
- max_age = cfs_time_shift_64(-2 * lod->lod_desc.ld_qos_maxage);
+ max_age = ktime_get_seconds() - 2 * lod->lod_desc.ld_qos_maxage;
- if (cfs_time_beforeq_64(max_age, obd->obd_osfs_age))
+ if (obd->obd_osfs_age > max_age)
/* statfs data are quite recent, don't need to refresh it */
RETURN_EXIT;
down_write(&lod->lod_qos.lq_rw_sem);
- if (cfs_time_beforeq_64(max_age, obd->obd_osfs_age))
+
+ if (obd->obd_osfs_age > max_age)
goto out;
for (i = 0; i < osts->op_count; i++) {
/* recalculate weigths */
lod->lod_qos.lq_dirty = 1;
}
- obd->obd_osfs_age = cfs_time_current_64();
+ obd->obd_osfs_age = ktime_get_seconds();
out:
up_write(&lod->lod_qos.lq_rw_sem);
__u32 num_active;
unsigned int i;
int rc, prio_wide;
- time_t now, age;
+ time64_t now, age;
ENTRY;
if (!lod->lod_qos.lq_dirty)
ba_min = (__u64)(-1);
ba_max = 0;
- now = cfs_time_current_sec();
+ now = ktime_get_real_seconds();
/* Calculate OST penalty per object
- * (lod ref taken in lod_qos_prep_create()) */
+ * (lod ref taken in lod_qos_prep_create())
+ */
cfs_foreach_bit(lod->lod_ost_bitmap, i) {
LASSERT(OST_TGT(lod,i));
temp = TGT_BAVAIL(i);
oss->lqo_penalty >>= 1;
/* mark the OSS and OST as recently used */
- ost->ltd_qos.ltq_used = oss->lqo_used = cfs_time_current_sec();
+ ost->ltd_qos.ltq_used = oss->lqo_used = ktime_get_real_seconds();
/* Set max penalties for this OST and OSS */
ost->ltd_qos.ltq_penalty +=
return 0;
}
+static inline bool
+lod_obj_is_ost_use_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 *comp = &lo->ldo_comp_entries[comp_idx];
+
+ return comp->llc_ost_indices == NULL;
+}
+
+static inline int
+lod_obj_is_ost_use_cb(const struct lu_env *env, struct lod_object *lo,
+ int comp_idx, struct lod_obj_stripe_cb_data *data)
+{
+ struct lod_layout_component *comp = &lo->ldo_comp_entries[comp_idx];
+ int i;
+
+ for (i = 0; i < comp->llc_stripe_count; i++) {
+ if (comp->llc_ost_indices[i] == data->locd_ost_index) {
+ data->locd_ost_index = -1;
+ return -EEXIST;
+ }
+ }
+
+ return 0;
+}
+
/**
* Check is OST used in a composite layout
*
- * \param[in] inuse all inuse ost indexs
+ * \param[in] lo lod object
* \param[in] ost OST target index to check
*
- * \retval 0 not used
- * \retval 1 used
+ * \retval false not used
+ * \retval true used
*/
-static inline int lod_comp_is_ost_used(struct ost_pool *inuse, int ost)
+static inline bool lod_comp_is_ost_used(const struct lu_env *env,
+ struct lod_object *lo, int ost)
{
- __u32 j;
- LASSERT(inuse != NULL);
+ struct lod_obj_stripe_cb_data data = { { 0 } };
- if (inuse->op_size == 0)
- return 0;
+ data.locd_ost_index = ost;
+ data.locd_comp_skip_cb = lod_obj_is_ost_use_skip_cb;
+ data.locd_comp_cb = lod_obj_is_ost_use_cb;
- LASSERT(inuse->op_count * sizeof(inuse->op_array[0]) <= inuse->op_size);
- for (j = 0; j < inuse->op_count; j++) {
- if (inuse->op_array[j] == ost)
- return 1;
- }
- return 0;
+ (void)lod_obj_for_each_stripe(env, lo, NULL, &data);
+
+ return data.locd_ost_index == -1;
}
-/**
- * Mark the given target as used for a composite layout
- *
- * \param[in] inuse inuse ost index array
- * \param[in] idx index in the array
- */
-static inline void lod_comp_ost_in_use(struct ost_pool *inuse, int ost)
+static inline void lod_avoid_update(struct lod_object *lo,
+ struct lod_avoid_guide *lag)
+{
+ if (!lod_is_flr(lo))
+ return;
+
+ lag->lag_ost_avail--;
+}
+
+static inline bool lod_should_avoid_ost(struct lod_object *lo,
+ struct lod_avoid_guide *lag,
+ __u32 index)
{
- LASSERT(inuse != NULL);
- if (inuse->op_size && !lod_comp_is_ost_used(inuse, ost)) {
- LASSERT(inuse->op_count * sizeof(inuse->op_array[0]) <
- inuse->op_size);
- inuse->op_array[inuse->op_count] = ost;
- inuse->op_count++;
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_tgt_desc *ost = OST_TGT(lod, index);
+ struct lod_qos_oss *lqo = ost->ltd_qos.ltq_oss;
+ bool used = false;
+ int i;
+
+ if (!cfs_bitmap_check(lod->lod_ost_bitmap, index))
+ return true;
+
+ /**
+ * we've tried our best, all available OSTs have been used in
+ * overlapped components in the other mirror
+ */
+ if (lag->lag_ost_avail == 0)
+ return false;
+
+ /* check OSS use */
+ for (i = 0; i < lag->lag_oaa_count; i++) {
+ if (lag->lag_oss_avoid_array[i] == lqo->lqo_id) {
+ used = true;
+ break;
+ }
}
+ /**
+ * if the OSS which OST[index] resides has not been used, we'd like to
+ * use it
+ */
+ if (!used)
+ return false;
+
+ /* if the OSS has been used, check whether the OST has been used */
+ if (!cfs_bitmap_check(lag->lag_ost_avoid_bitmap, index))
+ used = false;
+ else
+ QOS_DEBUG("OST%d: has been used in overlapped component "
+ "in other mirror\n", index);
+ return used;
}
static int lod_check_and_reserve_ost(const struct lu_env *env,
- struct lod_device *m,
+ struct lod_object *lo,
struct obd_statfs *sfs, __u32 ost_idx,
__u32 speed, __u32 *s_idx,
struct dt_object **stripe,
- struct thandle *th,
- struct ost_pool *inuse)
+ __u32 *ost_indices,
+ struct thandle *th)
{
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_avoid_guide *lag = &lod_env_info(env)->lti_avoid;
struct dt_object *o;
__u32 stripe_idx = *s_idx;
int rc;
- rc = lod_statfs_and_check(env, m, ost_idx, sfs);
+ rc = lod_statfs_and_check(env, lod, ost_idx, sfs);
if (rc) {
/* this OSP doesn't feel well */
goto out_return;
* try not allocate on OST which has been used by other
* component
*/
- if (speed == 0 && lod_comp_is_ost_used(inuse, ost_idx)) {
+ if (speed == 0 && lod_comp_is_ost_used(env, lo, ost_idx)) {
QOS_DEBUG("#%d: used by other component\n", ost_idx);
goto out_return;
}
+ /**
+ * try not allocate OSTs used by conflicting component of other mirrors
+ * for the first and second time.
+ */
+ if (speed < 2 && lod_should_avoid_ost(lo, lag, ost_idx)) {
+ QOS_DEBUG("#%d: used by overlapped component of other mirror\n",
+ ost_idx);
+ goto out_return;
+ }
/*
* do not put >1 objects on a single OST
*/
if (lod_qos_is_ost_used(env, ost_idx, stripe_idx))
goto out_return;
- o = lod_qos_declare_object_on(env, m, ost_idx, th);
+ o = lod_qos_declare_object_on(env, lod, ost_idx, th);
if (IS_ERR(o)) {
CDEBUG(D_OTHER, "can't declare new object on #%u: %d\n",
ost_idx, (int) PTR_ERR(o));
/*
* We've successfully declared (reserved) an object
*/
+ lod_avoid_update(lo, lag);
lod_qos_ost_in_use(env, stripe_idx, ost_idx);
- lod_comp_ost_in_use(inuse, ost_idx);
stripe[stripe_idx] = o;
+ ost_indices[stripe_idx] = ost_idx;
OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LOV_CREATE_RACE, 2);
stripe_idx++;
*s_idx = stripe_idx;
* time we give priority to targets which already have objects precreated.
* Full OSTs are skipped (see lod_qos_dev_is_full() for the details).
*
- * \param[in] env execution environment for this thread
- * \param[in] lo LOD object
- * \param[out] stripe striping created
- * \param[in] flags allocation flags (0 or LOV_USES_DEFAULT_STRIPE)
- * \param[in] th transaction handle
- * \param[in] comp_idx index of ldo_comp_entries
- * \param[in|out] inuse array of inuse ost index
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[out] stripe striping created
+ * \param[out] ost_indices ost indices of striping created
+ * \param[in] flags allocation flags (0 or LOV_USES_DEFAULT_STRIPE)
+ * \param[in] th transaction handle
+ * \param[in] comp_idx index of ldo_comp_entries
*
* \retval 0 on success
* \retval -ENOSPC if not enough OSTs are found
* \retval negative negated errno for other failures
*/
static int lod_alloc_rr(const struct lu_env *env, struct lod_object *lo,
- struct dt_object **stripe, int flags,
- struct thandle *th, int comp_idx,
- struct ost_pool *inuse)
+ struct dt_object **stripe, __u32 *ost_indices,
+ int flags, struct thandle *th, int comp_idx)
{
struct lod_layout_component *lod_comp;
struct lod_device *m = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
continue;
spin_unlock(&lqr->lqr_alloc);
- rc = lod_check_and_reserve_ost(env, m, sfs, ost_idx, speed,
- &stripe_idx, stripe, th, inuse);
+ rc = lod_check_and_reserve_ost(env, lo, sfs, ost_idx, speed,
+ &stripe_idx, stripe, ost_indices,
+ th);
spin_lock(&lqr->lqr_alloc);
if (rc != 0 && OST_TGT(m, ost_idx)->ltd_connecting)
* 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] stripe striping created
- * \param[in] th transaction handle
- * \param[in] comp_idx index of ldo_comp_entries
- * \param[in|out] inuse array of inuse ost index
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[out] stripe striping created
+ * \param[out] ost_indices ost indices of striping created
+ * \param[in] th transaction handle
+ * \param[in] comp_idx index of ldo_comp_entries
*
* \retval 0 on success
* \retval -ENODEV OST index does not exist on file system
* \retval negative negated errno on error
*/
static int lod_alloc_ost_list(const struct lu_env *env, struct lod_object *lo,
- struct dt_object **stripe, struct thandle *th,
- int comp_idx, struct ost_pool *inuse)
+ struct dt_object **stripe, __u32 *ost_indices,
+ struct thandle *th, int comp_idx)
{
struct lod_layout_component *lod_comp;
struct lod_device *m = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
if (rc < 0)
RETURN(rc);
+ if (lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT)
+ lod_comp->llc_stripe_offset =
+ lod_comp->llc_ostlist.op_array[0];
+
for (i = 0; i < lod_comp->llc_stripe_count; i++) {
if (lod_comp->llc_ostlist.op_array[i] ==
lod_comp->llc_stripe_offset) {
* We've successfully declared (reserved) an object
*/
lod_qos_ost_in_use(env, stripe_count, ost_idx);
- lod_comp_ost_in_use(inuse, ost_idx);
stripe[stripe_count] = o;
+ ost_indices[stripe_count] = ost_idx;
stripe_count++;
}
* 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] stripe striping created
- * \param[in] flags not used
- * \param[in] th transaction handle
- * \param[in] comp_idx index of ldo_comp_entries
- * \param[in|out]inuse array of inuse ost index
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[out] stripe striping created
+ * \param[out] ost_indices ost indices of striping created
+ * \param[in] flags not used
+ * \param[in] th transaction handle
+ * \param[in] comp_idx index of ldo_comp_entries
*
* \retval 0 on success
* \retval -ENOSPC if no OST objects are available at all
* \retval negative errno on failure
*/
static int lod_alloc_specific(const struct lu_env *env, struct lod_object *lo,
- struct dt_object **stripe, int flags,
- struct thandle *th, int comp_idx,
- struct ost_pool *inuse)
+ struct dt_object **stripe, __u32 *ost_indices,
+ int flags, struct thandle *th, int comp_idx)
{
struct lod_layout_component *lod_comp;
struct lod_device *m = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
* try not allocate on the OST used by other component
*/
if (speed == 0 && i != 0 &&
- lod_comp_is_ost_used(inuse, ost_idx))
+ lod_comp_is_ost_used(env, lo, ost_idx))
continue;
/* Drop slow OSCs if we can, but not for requested start idx.
}
/*
- * We expect number of precreated objects in f_ffree at
- * the first iteration, skip OSPs with no objects ready
- * don't apply this logic to OST specified with stripe_offset
+ * We expect number of precreated objects at the first
+ * iteration. Skip OSPs with no objects ready. Don't apply
+ * this logic to OST specified with stripe_offset.
*/
if (i != 0 && sfs->os_fprecreated == 0 && speed == 0)
continue;
* We've successfully declared (reserved) an object
*/
lod_qos_ost_in_use(env, stripe_num, ost_idx);
- lod_comp_ost_in_use(inuse, ost_idx);
stripe[stripe_num] = o;
+ ost_indices[stripe_num] = ost_idx;
stripe_num++;
/* We have enough stripes */
* An OST with a higher weight is proportionately more likely to be selected
* than one with a lower weight.
*
- * \param[in] env execution environment for this thread
- * \param[in] lo LOD object
- * \param[out] stripe striping created
- * \param[in] flags 0 or LOV_USES_DEFAULT_STRIPE
- * \param[in] th transaction handle
- * \param[in] comp_idx index of ldo_comp_entries
- * \param[in|out]inuse array of inuse ost index
+ * \param[in] env execution environment for this thread
+ * \param[in] lo LOD object
+ * \param[out] stripe striping created
+ * \param[out] ost_indices ost indices of striping created
+ * \param[in] flags 0 or LOV_USES_DEFAULT_STRIPE
+ * \param[in] th transaction handle
+ * \param[in] comp_idx index of ldo_comp_entries
*
* \retval 0 on success
* \retval -EAGAIN not enough OSTs are found for specified stripe count
* \retval negative errno on failure
*/
static int lod_alloc_qos(const struct lu_env *env, struct lod_object *lo,
- struct dt_object **stripe, int flags,
- struct thandle *th, int comp_idx,
- struct ost_pool *inuse)
+ struct dt_object **stripe, __u32 *ost_indices,
+ int flags, struct thandle *th, int comp_idx)
{
struct lod_layout_component *lod_comp;
struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
struct obd_statfs *sfs = &lod_env_info(env)->lti_osfs;
+ struct lod_avoid_guide *lag = &lod_env_info(env)->lti_avoid;
struct lod_tgt_desc *ost;
struct dt_object *o;
__u64 total_weight = 0;
struct pool_desc *pool = NULL;
struct ost_pool *osts;
unsigned int i;
- __u32 nfound, good_osts, stripe_count, stripe_count_min;
+ __u32 nfound, good_osts, stripe_count, stripe_count_min;
int rc = 0;
ENTRY;
for (i = 0; i < osts->op_count; i++) {
__u32 idx = osts->op_array[i];
- if (!cfs_bitmap_check(lod->lod_ost_bitmap, idx))
+ if (lod_should_avoid_ost(lo, lag, idx))
continue;
ost = OST_TGT(lod, idx);
* do not put >1 objects on a single OST
*/
if (lod_qos_is_ost_used(env, idx, nfound) ||
- lod_comp_is_ost_used(inuse, idx))
+ lod_comp_is_ost_used(env, lo, idx))
continue;
o = lod_qos_declare_object_on(env, lod, idx, th);
continue;
}
+ lod_avoid_update(lo, lag);
lod_qos_ost_in_use(env, nfound, idx);
- lod_comp_ost_in_use(inuse, idx);
- stripe[nfound++] = o;
+ stripe[nfound] = o;
+ ost_indices[nfound] = idx;
lod_qos_used(lod, osts, idx, &total_weight);
+ nfound++;
rc = 0;
break;
}
dt_object_put(env, stripe[i]);
stripe[i] = NULL;
}
- LASSERTF(nfound <= inuse->op_count,
- "nfound:%d, op_count:%u\n", nfound, inuse->op_count);
- inuse->op_count -= nfound;
/* makes sense to rebalance next time */
lod->lod_qos.lq_dirty = 1;
int rc = 0, i;
ENTRY;
+ mutex_lock(&mo->ldo_layout_mutex);
+ lod_striping_free_nolock(env, mo);
+
magic = le32_to_cpu(v1->lmm_magic) & ~LOV_MAGIC_DEFINED;
if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3 &&
magic != LOV_MAGIC_COMP_V1)
- RETURN(-EINVAL);
+ GOTO(unlock, rc = -EINVAL);
if (magic == LOV_MAGIC_COMP_V1) {
comp_v1 = buf->lb_buf;
comp_cnt = le16_to_cpu(comp_v1->lcm_entry_count);
if (comp_cnt == 0)
- RETURN(-EINVAL);
+ GOTO(unlock, rc = -EINVAL);
mirror_cnt = le16_to_cpu(comp_v1->lcm_mirror_count) + 1;
+ mo->ldo_flr_state = le16_to_cpu(comp_v1->lcm_flags) &
+ LCM_FL_FLR_MASK;
mo->ldo_is_composite = 1;
} else {
mo->ldo_is_composite = 0;
rc = lod_alloc_comp_entries(mo, mirror_cnt, comp_cnt);
if (rc)
- RETURN(rc);
+ GOTO(unlock, rc);
for (i = 0; i < comp_cnt; i++) {
struct lu_extent *ext;
}
rc = lod_fill_mirrors(mo);
- if (rc)
- GOTO(out, rc);
+ GOTO(out, rc);
out:
if (rc)
- lod_object_free_striping(env, mo);
+ lod_striping_free_nolock(env, mo);
+unlock:
+ mutex_unlock(&mo->ldo_layout_mutex);
RETURN(rc);
}
struct lov_user_md_v1 *v1 = NULL;
struct lov_user_md_v3 *v3 = NULL;
struct lov_comp_md_v1 *comp_v1 = NULL;
+ char def_pool[LOV_MAXPOOLNAME + 1];
__u32 magic;
__u16 comp_cnt;
__u16 mirror_cnt;
if (buf == NULL || buf->lb_buf == NULL || buf->lb_len == 0)
RETURN(0);
+ memset(def_pool, 0, sizeof(def_pool));
+ if (lo->ldo_comp_entries != NULL)
+ lod_layout_get_pool(lo->ldo_comp_entries, lo->ldo_comp_cnt,
+ def_pool, sizeof(def_pool));
+
+ /* free default striping info */
+ lod_free_comp_entries(lo);
+
rc = lod_verify_striping(d, lo, buf, false);
if (rc)
RETURN(-EINVAL);
- lod_free_comp_entries(lo);
-
v3 = buf->lb_buf;
v1 = buf->lb_buf;
comp_v1 = buf->lb_buf;
if (comp_cnt == 0)
RETURN(-EINVAL);
mirror_cnt = comp_v1->lcm_mirror_count + 1;
+ if (mirror_cnt > 1)
+ lo->ldo_flr_state = LCM_FL_RDONLY;
lo->ldo_is_composite = 1;
} else {
comp_cnt = 1;
if (rc)
RETURN(rc);
+ LASSERT(lo->ldo_comp_entries);
+
for (i = 0; i < comp_cnt; i++) {
struct pool_desc *pool;
struct lu_extent *ext;
comp_v1->lcm_entries[i].lcme_offset);
ext = &comp_v1->lcm_entries[i].lcme_extent;
lod_comp->llc_extent = *ext;
+ lod_comp->llc_flags =
+ comp_v1->lcm_entries[i].lcme_flags &
+ LCME_USER_FLAGS;
}
pool_name = NULL;
if (v1->lmm_magic == LOV_USER_MAGIC_V3 ||
v1->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
- int j;
-
v3 = (struct lov_user_md_v3 *)v1;
if (v3->lmm_pool_name[0] != '\0')
pool_name = v3->lmm_pool_name;
if (v3->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
- if (v3->lmm_stripe_offset == LOV_OFFSET_DEFAULT)
- v3->lmm_stripe_offset =
- v3->lmm_objects[0].l_ost_idx;
-
- /* 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)
- GOTO(free_comp, rc = -ENOMEM);
-
- for (j = 0; j < v3->lmm_stripe_count; j++)
- lod_comp->llc_ostlist.op_array[j] =
- v3->lmm_objects[j].l_ost_idx;
+ rc = lod_comp_copy_ost_lists(lod_comp, v3);
+ if (rc)
+ GOTO(free_comp, rc);
}
}
+ if (pool_name == NULL && def_pool[0] != '\0')
+ pool_name = def_pool;
+
if (v1->lmm_pattern == 0)
v1->lmm_pattern = LOV_PATTERN_RAID0;
if (lov_pattern(v1->lmm_pattern) != LOV_PATTERN_RAID0 &&
}
/**
+ * prepare enough OST avoidance bitmap space
+ */
+int lod_prepare_avoidance(const struct lu_env *env, struct lod_object *lo)
+{
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_tgt_descs *ltds = &lod->lod_ost_descs;
+ struct lod_avoid_guide *lag = &lod_env_info(env)->lti_avoid;
+ struct cfs_bitmap *bitmap = NULL;
+ __u32 *new_oss = NULL;
+
+ lag->lag_ost_avail = ltds->ltd_tgtnr;
+
+ /* reset OSS avoid guide array */
+ lag->lag_oaa_count = 0;
+ if (lag->lag_oss_avoid_array && lag->lag_oaa_size < ltds->ltd_tgtnr) {
+ OBD_FREE(lag->lag_oss_avoid_array,
+ sizeof(__u32) * lag->lag_oaa_size);
+ lag->lag_oss_avoid_array = NULL;
+ lag->lag_oaa_size = 0;
+ }
+
+ /* init OST avoid guide bitmap */
+ if (lag->lag_ost_avoid_bitmap) {
+ if (ltds->ltd_tgtnr <= lag->lag_ost_avoid_bitmap->size) {
+ CFS_RESET_BITMAP(lag->lag_ost_avoid_bitmap);
+ } else {
+ CFS_FREE_BITMAP(lag->lag_ost_avoid_bitmap);
+ lag->lag_ost_avoid_bitmap = NULL;
+ }
+ }
+
+ if (!lag->lag_ost_avoid_bitmap) {
+ bitmap = CFS_ALLOCATE_BITMAP(ltds->ltd_tgtnr);
+ if (!bitmap)
+ return -ENOMEM;
+ }
+
+ if (!lag->lag_oss_avoid_array) {
+ /**
+ * usually there are multiple OSTs in one OSS, but we don't
+ * know the exact OSS number, so we choose a safe option,
+ * using OST count to allocate the array to store the OSS
+ * id.
+ */
+ OBD_ALLOC(new_oss, sizeof(*new_oss) * ltds->ltd_tgtnr);
+ if (!new_oss) {
+ CFS_FREE_BITMAP(bitmap);
+ return -ENOMEM;
+ }
+ }
+
+ if (new_oss) {
+ lag->lag_oss_avoid_array = new_oss;
+ lag->lag_oaa_size = ltds->ltd_tgtnr;
+ }
+ if (bitmap)
+ lag->lag_ost_avoid_bitmap = bitmap;
+
+ return 0;
+}
+
+/**
+ * Collect information of used OSTs and OSSs in the overlapped components
+ * of other mirrors
+ */
+void lod_collect_avoidance(struct lod_object *lo, struct lod_avoid_guide *lag,
+ int comp_idx)
+{
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_layout_component *lod_comp = &lo->ldo_comp_entries[comp_idx];
+ struct cfs_bitmap *bitmap = lag->lag_ost_avoid_bitmap;
+ int i, j;
+
+ /* iterate mirrors */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ struct lod_layout_component *comp;
+
+ /**
+ * skip mirror containing component[comp_idx], we only
+ * collect OSTs info of conflicting component in other mirrors,
+ * so that during read, if OSTs of a mirror's component are
+ * not available, we still have other mirror with different
+ * OSTs to read the data.
+ */
+ comp = &lo->ldo_comp_entries[lo->ldo_mirrors[i].lme_start];
+ if (comp->llc_id == LCME_ID_INVAL ||
+ mirror_id_of(comp->llc_id) ==
+ mirror_id_of(lod_comp->llc_id))
+ continue;
+
+ /* iterate components of a mirror */
+ lod_foreach_mirror_comp(comp, lo, i) {
+ /* skip non-overlapped or un-instantiated components */
+ if (!lu_extent_is_overlapped(&comp->llc_extent,
+ &lod_comp->llc_extent) ||
+ !lod_comp_inited(comp) || !comp->llc_stripe)
+ continue;
+
+ /**
+ * collect used OSTs index and OSS info from a
+ * component
+ */
+ for (j = 0; j < comp->llc_stripe_count; j++) {
+ struct lod_tgt_desc *ost;
+ struct lod_qos_oss *lqo;
+ int k;
+
+ ost = OST_TGT(lod, comp->llc_ost_indices[j]);
+ lqo = ost->ltd_qos.ltq_oss;
+
+ if (cfs_bitmap_check(bitmap, ost->ltd_index))
+ continue;
+
+ cfs_bitmap_set(bitmap, ost->ltd_index);
+ lag->lag_ost_avail--;
+
+ for (k = 0; k < lag->lag_oaa_count; k++) {
+ if (lag->lag_oss_avoid_array[k] ==
+ lqo->lqo_id)
+ break;
+ }
+ if (k == lag->lag_oaa_count) {
+ lag->lag_oss_avoid_array[k] =
+ lqo->lqo_id;
+ lag->lag_oaa_count++;
+ }
+ }
+ }
+ }
+}
+
+/**
* Create a striping for an obejct.
*
* The function creates a new striping for the object. The function tries QoS
* \param[in] attr attributes OST objects will be declared with
* \param[in] th transaction handle
* \param[in] comp_idx index of ldo_comp_entries
- * \param[in|out] inuse array of inuse ost index
*
* \retval 0 on success
* \retval negative negated errno on error
*/
int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
struct lu_attr *attr, struct thandle *th,
- int comp_idx, struct ost_pool *inuse)
+ int comp_idx)
{
struct lod_layout_component *lod_comp;
struct lod_device *d = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
- struct dt_object **stripe;
int stripe_len;
int flag = LOV_USES_ASSIGNED_STRIPE;
int i, rc = 0;
+ struct lod_avoid_guide *lag = &lod_env_info(env)->lti_avoid;
+ struct dt_object **stripe = NULL;
+ __u32 *ost_indices = NULL;
ENTRY;
LASSERT(lo);
OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_len);
if (stripe == NULL)
GOTO(out, rc = -ENOMEM);
+ OBD_ALLOC(ost_indices, sizeof(*ost_indices) * stripe_len);
+ if (!ost_indices)
+ GOTO(out, rc = -ENOMEM);
lod_getref(&d->lod_ost_descs);
/* XXX: support for non-0 files w/o objects */
d->lod_desc.ld_tgt_count, stripe_len);
if (lod_comp->llc_ostlist.op_array) {
- rc = lod_alloc_ost_list(env, lo, stripe, th, comp_idx,
- inuse);
+ rc = lod_alloc_ost_list(env, lo, stripe, ost_indices,
+ th, comp_idx);
} else if (lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT) {
- rc = lod_alloc_qos(env, lo, stripe, flag, th,
- comp_idx, inuse);
+ /**
+ * collect OSTs and OSSs used in other mirrors whose
+ * components cross the ldo_comp_entries[comp_idx]
+ */
+ rc = lod_prepare_avoidance(env, lo);
+ if (rc)
+ GOTO(put_ldts, rc);
+
+ lod_collect_avoidance(lo, lag, comp_idx);
+
+ rc = lod_alloc_qos(env, lo, stripe, ost_indices, flag,
+ th, comp_idx);
if (rc == -EAGAIN)
- rc = lod_alloc_rr(env, lo, stripe, flag, th,
- comp_idx, inuse);
+ rc = lod_alloc_rr(env, lo, stripe, ost_indices,
+ flag, th, comp_idx);
} else {
- rc = lod_alloc_specific(env, lo, stripe, flag, th,
- comp_idx, inuse);
+ rc = lod_alloc_specific(env, lo, stripe, ost_indices,
+ flag, th, comp_idx);
}
+put_ldts:
lod_putref(d, &d->lod_ost_descs);
-
if (rc < 0) {
for (i = 0; i < stripe_len; i++)
if (stripe[i] != NULL)
dt_object_put(env, stripe[i]);
-
- OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
lod_comp->llc_stripe_count = 0;
} else {
lod_comp->llc_stripe = stripe;
+ lod_comp->llc_ost_indices = ost_indices;
lod_comp->llc_stripes_allocated = stripe_len;
}
} else {
}
out:
- RETURN(rc);
-}
-
-int lod_obj_stripe_set_inuse_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)
-{
- struct lod_thread_info *info = lod_env_info(env);
- struct lod_device *d = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
- struct lu_fid *fid = &info->lti_fid;
- __u32 index;
- int rc, type = LU_SEQ_RANGE_OST;
-
- *fid = *lu_object_fid(&dt->do_lu);
- rc = lod_fld_lookup(env, d, fid, &index, &type);
if (rc < 0) {
- CERROR("%s: fail to locate "DFID": rc = %d\n",
- lod2obd(d)->obd_name, PFID(fid), rc);
- return rc;
+ if (stripe)
+ OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
+ if (ost_indices)
+ OBD_FREE(ost_indices,
+ sizeof(*ost_indices) * stripe_len);
}
- lod_comp_ost_in_use(data->locd_inuse, index);
- return 0;
-}
-
-/**
- * Resize per-thread ost list to hold OST target index list already used.
- *
- * \param[in,out] inuse structure contains ost list array
- * \param[in] cnt total stripe count of all components
- * \param[in] max array's max size if @max > 0
- *
- * \retval 0 on success
- * \retval -ENOMEM reallocation failed
- */
-static int lod_inuse_resize(struct ost_pool *inuse, __u16 cnt, __u16 max)
-{
- __u32 *array;
- __u32 new = cnt * sizeof(inuse->op_array[0]);
-
- inuse->op_count = 0;
-
- if (new <= inuse->op_size)
- return 0;
-
- if (max)
- new = min_t(__u32, new, max);
-
- OBD_ALLOC(array, new);
- if (!array)
- return -ENOMEM;
-
- if (inuse->op_array)
- OBD_FREE(inuse->op_array, inuse->op_size);
-
- inuse->op_array = array;
- inuse->op_size = new;
-
- return 0;
-}
-
-int lod_prepare_inuse(const struct lu_env *env, struct lod_object *lo)
-{
- struct lod_thread_info *info = lod_env_info(env);
- struct lod_device *d = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
- struct ost_pool *inuse = &info->lti_inuse_osts;
- struct lod_obj_stripe_cb_data data;
- __u32 stripe_count = 0;
- int i;
- int rc;
-
- for (i = 0; i < lo->ldo_comp_cnt; i++)
- stripe_count += lod_comp_entry_stripe_count(lo,
- &lo->ldo_comp_entries[i], false);
- rc = lod_inuse_resize(inuse, stripe_count, d->lod_osd_max_easize);
- if (rc)
- return rc;
-
- data.locd_inuse = inuse;
- return lod_obj_for_each_stripe(env, lo, NULL,
- lod_obj_stripe_set_inuse_cb, &data);
+ RETURN(rc);
}
int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
struct thandle *th)
{
- struct lod_thread_info *info = lod_env_info(env);
struct lod_device *d = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
- struct ost_pool inuse_osts = { 0 };
- struct ost_pool *inuse = &inuse_osts;
uint64_t size = 0;
int i;
int rc;
if (attr->la_valid & LA_SIZE)
size = attr->la_size;
- /* only prepare inuse if multiple components to be created */
- if (size && lo->ldo_is_composite) {
- rc = lod_prepare_inuse(env, lo);
- if (rc)
- RETURN(rc);
- inuse = &info->lti_inuse_osts;
- }
-
/**
* prepare OST object creation for the component covering file's
* size, the 1st component (including plain layout file) is always
CDEBUG(D_QOS, "%lld [%lld, %lld)\n",
size, extent->e_start, extent->e_end);
if (!lo->ldo_is_composite || size >= extent->e_start) {
- rc = lod_qos_prep_create(env, lo, attr, th, i, inuse);
+ rc = lod_qos_prep_create(env, lo, attr, th, i);
if (rc)
break;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff