* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
-
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License version 2 for more details. A copy is
* included in the COPYING file that accompanied this code.
-
+ *
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <asm/div64.h>
#include <libcfs/libcfs.h>
+#include <uapi/linux/lustre/lustre_idl.h>
+#include <lustre_swab.h>
#include <obd_class.h>
-#include <lustre/lustre_idl.h>
+
#include "lod_internal.h"
/*
#define D_QOS D_OTHER
-#if 0
-#define QOS_DEBUG(fmt, ...) CDEBUG(D_OTHER, fmt, ## __VA_ARGS__)
-#define QOS_CONSOLE(fmt, ...) LCONSOLE(D_OTHER, fmt, ## __VA_ARGS__)
-#else
-#define QOS_DEBUG(fmt, ...)
-#define QOS_CONSOLE(fmt, ...)
-#endif
+#define QOS_DEBUG(fmt, ...) CDEBUG(D_QOS, fmt, ## __VA_ARGS__)
+#define QOS_CONSOLE(fmt, ...) LCONSOLE(D_QOS, fmt, ## __VA_ARGS__)
#define TGT_BAVAIL(i) (OST_TGT(lod,i)->ltd_statfs.os_bavail * \
OST_TGT(lod,i)->ltd_statfs.os_bsize)
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);
{
struct lod_tgt_desc *ost;
int rc;
+ ENTRY;
LASSERT(d);
ost = OST_TGT(d,index);
LASSERT(ost);
rc = dt_statfs(env, ost->ltd_ost, sfs);
+
+ if (rc == 0 && ((sfs->os_state & OS_STATE_ENOSPC) ||
+ (sfs->os_state & OS_STATE_ENOINO && sfs->os_fprecreated == 0)))
+ RETURN(-ENOSPC);
+
if (rc && rc != -ENOTCONN)
CERROR("%s: statfs: rc = %d\n", lod2obd(d)->obd_name, rc);
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? */
- spin_lock(&d->lod_desc_lock);
+ spin_lock(&d->lod_lock);
if (ost->ltd_active) {
ost->ltd_active = 0;
+ if (rc == -ENOTCONN)
+ ost->ltd_connecting = 1;
+
LASSERT(d->lod_desc.ld_active_tgt_count > 0);
d->lod_desc.ld_active_tgt_count--;
d->lod_qos.lq_dirty = 1;
CDEBUG(D_CONFIG, "%s: turns inactive\n",
ost->ltd_exp->exp_obd->obd_name);
}
- spin_unlock(&d->lod_desc_lock);
+ spin_unlock(&d->lod_lock);
} else if (rc == 0 && ost->ltd_active == 0) {
/* turned active? */
LASSERTF(d->lod_desc.ld_active_tgt_count < d->lod_ostnr,
"active tgt count %d, ost nr %d\n",
d->lod_desc.ld_active_tgt_count, d->lod_ostnr);
- spin_lock(&d->lod_desc_lock);
+ spin_lock(&d->lod_lock);
if (ost->ltd_active == 0) {
ost->ltd_active = 1;
+ ost->ltd_connecting = 0;
d->lod_desc.ld_active_tgt_count++;
d->lod_qos.lq_dirty = 1;
d->lod_qos.lq_rr.lqr_dirty = 1;
CDEBUG(D_CONFIG, "%s: turns active\n",
ost->ltd_exp->exp_obd->obd_name);
}
- spin_unlock(&d->lod_desc_lock);
+ spin_unlock(&d->lod_lock);
}
RETURN(rc);
* \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, rc = 0;
- __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))
- GOTO(out, rc = 0);
+
+ if (obd->obd_osfs_age > max_age)
+ goto out;
for (i = 0; i < osts->op_count; i++) {
idx = osts->op_array[i];
avail = OST_TGT(lod,idx)->ltd_statfs.os_bavail;
- rc = lod_statfs_and_check(env, lod, idx,
- &OST_TGT(lod,idx)->ltd_statfs);
- if (rc)
- break;
+ if (lod_statfs_and_check(env, lod, idx,
+ &OST_TGT(lod, idx)->ltd_statfs))
+ continue;
if (OST_TGT(lod,idx)->ltd_statfs.os_bavail != avail)
/* 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 +=
if (ost->ltd_qos.ltq_usable)
*total_wt += ost->ltd_qos.ltq_weight;
- QOS_DEBUG("recalc tgt %d usable=%d avail="LPU64
- " ostppo="LPU64" ostp="LPU64" ossppo="LPU64
- " ossp="LPU64" wt="LPU64"\n",
+ QOS_DEBUG("recalc tgt %d usable=%d avail=%llu"
+ " ostppo=%llu ostp=%llu ossppo=%llu"
+ " ossp=%llu wt=%llu\n",
i, ost->ltd_qos.ltq_usable, TGT_BAVAIL(i) >> 10,
ost->ltd_qos.ltq_penalty_per_obj >> 10,
ost->ltd_qos.ltq_penalty >> 10,
RETURN(0);
}
+void lod_qos_rr_init(struct lod_qos_rr *lqr)
+{
+ spin_lock_init(&lqr->lqr_alloc);
+ lqr->lqr_dirty = 1;
+}
+
+
#define LOV_QOS_EMPTY ((__u32)-1)
/**
dt = container_of(n, struct dt_object, do_lu);
- rc = dt_declare_create(env, dt, NULL, NULL, NULL, th);
- if (rc) {
+ rc = lod_sub_declare_create(env, dt, NULL, NULL, NULL, th);
+ if (rc < 0) {
CDEBUG(D_OTHER, "can't declare creation on #%u: %d\n",
ost_idx, rc);
lu_object_put(env, o);
* Return an acceptable stripe count depending on flag LOV_USES_DEFAULT_STRIPE:
* all stripes or 3/4 of stripes.
*
- * \param[in] stripe_cnt number of stripes requested
+ * \param[in] stripe_count number of stripes requested
* \param[in] flags 0 or LOV_USES_DEFAULT_STRIPE
*
* \retval acceptable stripecount
*/
-static int min_stripe_count(__u32 stripe_cnt, int flags)
+static int min_stripe_count(__u32 stripe_count, int flags)
{
return (flags & LOV_USES_DEFAULT_STRIPE ?
- stripe_cnt - (stripe_cnt / 4) : stripe_cnt);
+ stripe_count - (stripe_count / 4) : stripe_count);
}
#define LOV_CREATE_RESEED_MULT 30
#define LOV_CREATE_RESEED_MIN 2000
/**
- * Check if an OST is full.
- *
- * Check whether an OST should be considered full based
- * on the given statfs data.
- *
- * \param[in] msfs statfs data
- *
- * \retval false not full
- * \retval true full
- */
-static int inline lod_qos_dev_is_full(struct obd_statfs *msfs)
-{
- __u64 used;
- int bs = msfs->os_bsize;
-
- LASSERT(((bs - 1) & bs) == 0);
-
- /* the minimum of 0.1% used blocks and 1GB bytes. */
- used = min_t(__u64, (msfs->os_blocks - msfs->os_bfree) >> 10,
- 1 << (31 - ffs(bs)));
- return (msfs->os_bavail < used);
-}
-
-/**
* Initialize temporary OST-in-use array.
*
* Allocate or extend the array used to mark targets already assigned to a new
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;
+}
+
/**
- * Allocate a striping using round-robin algorigthm.
+ * Check is OST used in a composite layout
+ *
+ * \param[in] lo lod object
+ * \param[in] ost OST target index to check
+ *
+ * \retval false not used
+ * \retval true used
+ */
+static inline bool lod_comp_is_ost_used(const struct lu_env *env,
+ struct lod_object *lo, int ost)
+{
+ struct lod_obj_stripe_cb_data data = { { 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;
+
+ (void)lod_obj_for_each_stripe(env, lo, NULL, &data);
+
+ return data.locd_ost_index == -1;
+}
+
+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)
+{
+ 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)) {
+ QOS_DEBUG("OST%d: been used in conflicting mirror component\n",
+ 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: been used in conflicting mirror component\n",
+ index);
+ return used;
+}
+
+static int lod_check_and_reserve_ost(const struct lu_env *env,
+ struct lod_object *lo,
+ struct obd_statfs *sfs, __u32 ost_idx,
+ __u32 speed, __u32 *s_idx,
+ struct dt_object **stripe,
+ __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;
+ ENTRY;
+
+ rc = lod_statfs_and_check(env, lod, ost_idx, sfs);
+ if (rc)
+ RETURN(rc);
+
+ /*
+ * We expect number of precreated objects in f_ffree at
+ * the first iteration, skip OSPs with no objects ready
+ */
+ if (sfs->os_fprecreated == 0 && speed == 0) {
+ QOS_DEBUG("#%d: precreation is empty\n", ost_idx);
+ RETURN(rc);
+ }
+
+ /*
+ * try to use another OSP if this one is degraded
+ */
+ if (sfs->os_state & OS_STATE_DEGRADED && speed < 2) {
+ QOS_DEBUG("#%d: degraded\n", ost_idx);
+ RETURN(rc);
+ }
+
+ /*
+ * try not allocate on OST which has been used by other
+ * component
+ */
+ if (speed == 0 && lod_comp_is_ost_used(env, lo, ost_idx)) {
+ QOS_DEBUG("iter %d: OST%d used by other component\n",
+ speed, ost_idx);
+ RETURN(rc);
+ }
+
+ /**
+ * 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("iter %d: OST%d used by conflicting mirror "
+ "component\n", speed, ost_idx);
+ RETURN(rc);
+ }
+ /*
+ * do not put >1 objects on a single OST
+ */
+ if (lod_qos_is_ost_used(env, ost_idx, stripe_idx))
+ RETURN(rc);
+
+ 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));
+ rc = PTR_ERR(o);
+ RETURN(rc);
+ }
+
+ /*
+ * We've successfully declared (reserved) an object
+ */
+ lod_avoid_update(lo, lag);
+ lod_qos_ost_in_use(env, stripe_idx, 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;
+
+ RETURN(rc);
+}
+
+/**
+ * Allocate a striping using round-robin algorithm.
*
* Allocates a new striping using round-robin algorithm. The function refreshes
* all the internal structures (statfs cache, array of available OSTs sorted
* 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] 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)
+ 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);
struct obd_statfs *sfs = &lod_env_info(env)->lti_osfs;
struct pool_desc *pool = NULL;
struct ost_pool *osts;
struct lod_qos_rr *lqr;
- struct dt_object *o;
- unsigned int i, array_idx;
- int rc;
- __u32 ost_start_idx_temp;
- int speed = 0;
- __u32 stripe_idx = 0;
- __u32 stripe_cnt = lo->ldo_stripenr;
- __u32 stripe_cnt_min = min_stripe_count(stripe_cnt, flags);
- __u32 ost_idx;
+ unsigned int i, array_idx;
+ __u32 ost_start_idx_temp;
+ __u32 stripe_idx = 0;
+ __u32 stripe_count, stripe_count_min, ost_idx;
+ int rc, speed = 0, ost_connecting = 0;
ENTRY;
- if (lo->ldo_pool)
- pool = lod_find_pool(m, lo->ldo_pool);
+ LASSERT(lo->ldo_comp_cnt > comp_idx && lo->ldo_comp_entries != NULL);
+ lod_comp = &lo->ldo_comp_entries[comp_idx];
+ stripe_count = lod_comp->llc_stripe_count;
+ stripe_count_min = min_stripe_count(stripe_count, flags);
+
+ if (lod_comp->llc_pool != NULL)
+ pool = lod_find_pool(m, lod_comp->llc_pool);
if (pool != NULL) {
down_read(&pool_tgt_rw_sem(pool));
if (rc)
GOTO(out, rc);
- rc = lod_qos_ost_in_use_clear(env, lo->ldo_stripenr);
+ rc = lod_qos_ost_in_use_clear(env, stripe_count);
if (rc)
GOTO(out, rc);
+ down_read(&m->lod_qos.lq_rw_sem);
+ spin_lock(&lqr->lqr_alloc);
if (--lqr->lqr_start_count <= 0) {
lqr->lqr_start_idx = cfs_rand() % osts->op_count;
lqr->lqr_start_count =
(LOV_CREATE_RESEED_MIN / max(osts->op_count, 1U) +
LOV_CREATE_RESEED_MULT) * max(osts->op_count, 1U);
- } else if (stripe_cnt_min >= osts->op_count ||
+ } else if (stripe_count_min >= osts->op_count ||
lqr->lqr_start_idx > osts->op_count) {
/* If we have allocated from all of the OSTs, slowly
* precess the next start if the OST/stripe count isn't
* already doing this for us. */
lqr->lqr_start_idx %= osts->op_count;
- if (stripe_cnt > 1 && (osts->op_count % stripe_cnt) != 1)
+ if (stripe_count > 1 && (osts->op_count % stripe_count) != 1)
++lqr->lqr_offset_idx;
}
- down_read(&m->lod_qos.lq_rw_sem);
ost_start_idx_temp = lqr->lqr_start_idx;
repeat_find:
- array_idx = (lqr->lqr_start_idx + lqr->lqr_offset_idx) %
- osts->op_count;
-
- QOS_DEBUG("pool '%s' want %d startidx %d startcnt %d offset %d "
- "active %d count %d arrayidx %d\n",
- lo->ldo_pool ? lo->ldo_pool : "",
- stripe_cnt, lqr->lqr_start_idx, lqr->lqr_start_count,
- lqr->lqr_offset_idx, osts->op_count, osts->op_count,
- array_idx);
-
- for (i = 0; i < osts->op_count && stripe_idx < lo->ldo_stripenr;
- i++, array_idx = (array_idx + 1) % osts->op_count) {
+
+ QOS_DEBUG("pool '%s' want %d start_idx %d start_count %d offset %d "
+ "active %d count %d\n",
+ lod_comp->llc_pool ? lod_comp->llc_pool : "",
+ stripe_count, lqr->lqr_start_idx, lqr->lqr_start_count,
+ lqr->lqr_offset_idx, osts->op_count, osts->op_count);
+
+ for (i = 0; i < osts->op_count && stripe_idx < stripe_count; i++) {
+ array_idx = (lqr->lqr_start_idx + lqr->lqr_offset_idx) %
+ osts->op_count;
++lqr->lqr_start_idx;
ost_idx = lqr->lqr_pool.op_array[array_idx];
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OSC_PRECREATE) && ost_idx == 0)
continue;
- rc = lod_statfs_and_check(env, m, ost_idx, sfs);
- if (rc) {
- /* this OSP doesn't feel well */
- continue;
- }
-
- /*
- * skip full devices
- */
- if (lod_qos_dev_is_full(sfs)) {
- QOS_DEBUG("#%d is full\n", ost_idx);
- continue;
- }
-
- /*
- * We expect number of precreated objects in f_ffree at
- * the first iteration, skip OSPs with no objects ready
- */
- if (sfs->os_fprecreated == 0 && speed == 0) {
- QOS_DEBUG("#%d: precreation is empty\n", ost_idx);
- continue;
- }
-
- /*
- * try to use another OSP if this one is degraded
- */
- if (sfs->os_state & OS_STATE_DEGRADED && speed < 2) {
- QOS_DEBUG("#%d: degraded\n", ost_idx);
- continue;
- }
-
- /*
- * do not put >1 objects on a single OST
- */
- if (speed && lod_qos_is_ost_used(env, ost_idx, stripe_idx))
- continue;
-
- o = lod_qos_declare_object_on(env, m, 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));
- rc = PTR_ERR(o);
- continue;
- }
-
- /*
- * We've successfuly declared (reserved) an object
- */
- lod_qos_ost_in_use(env, stripe_idx, ost_idx);
- stripe[stripe_idx] = o;
- stripe_idx++;
+ spin_unlock(&lqr->lqr_alloc);
+ 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)
+ ost_connecting = 1;
}
- if ((speed < 2) && (stripe_idx < stripe_cnt_min)) {
+ if ((speed < 2) && (stripe_idx < stripe_count_min)) {
/* Try again, allowing slower OSCs */
speed++;
lqr->lqr_start_idx = ost_start_idx_temp;
+
+ ost_connecting = 0;
goto repeat_find;
}
+ spin_unlock(&lqr->lqr_alloc);
up_read(&m->lod_qos.lq_rw_sem);
if (stripe_idx) {
- lo->ldo_stripenr = stripe_idx;
+ lod_comp->llc_stripe_count = stripe_idx;
/* at least one stripe is allocated */
rc = 0;
} else {
/* nobody provided us with a single object */
- rc = -ENOSPC;
+ if (ost_connecting)
+ rc = -EINPROGRESS;
+ else
+ rc = -ENOSPC;
}
out:
* 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] lum stripe md to specify list of OSTs
- * \param[in] th transaction handle
+ * \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 -EINVAL requested OST index is invalid
* \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 lov_user_md *lum, struct thandle *th)
+static int lod_alloc_ost_list(const struct lu_env *env, struct lod_object *lo,
+ 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);
struct obd_statfs *sfs = &lod_env_info(env)->lti_osfs;
struct dt_object *o;
- struct lov_user_md_v3 *v3;
unsigned int array_idx = 0;
int stripe_count = 0;
int i;
- int rc;
+ int rc = -EINVAL;
ENTRY;
/* for specific OSTs layout */
- LASSERT(lum != NULL && lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC);
- lustre_print_user_md(D_OTHER, lum, __func__);
+ LASSERT(lo->ldo_comp_cnt > comp_idx && lo->ldo_comp_entries != NULL);
+ lod_comp = &lo->ldo_comp_entries[comp_idx];
+ LASSERT(lod_comp->llc_ostlist.op_array);
+ LASSERT(lod_comp->llc_ostlist.op_count);
- rc = lod_qos_ost_in_use_clear(env, lo->ldo_stripenr);
+ rc = lod_qos_ost_in_use_clear(env, lod_comp->llc_stripe_count);
if (rc < 0)
RETURN(rc);
- v3 = (struct lov_user_md_v3 *)lum;
- for (i = 0; i < lo->ldo_stripenr; i++) {
- if (v3->lmm_objects[i].l_ost_idx == lo->ldo_def_stripe_offset) {
+ 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) {
array_idx = i;
break;
}
}
- if (i == lo->ldo_stripenr) {
+ if (i == lod_comp->llc_stripe_count) {
CDEBUG(D_OTHER,
"%s: start index %d not in the specified list of OSTs\n",
- lod2obd(m)->obd_name, lo->ldo_def_stripe_offset);
+ lod2obd(m)->obd_name, lod_comp->llc_stripe_offset);
RETURN(-EINVAL);
}
- for (i = 0; i < lo->ldo_stripenr;
- i++, array_idx = (array_idx + 1) % lo->ldo_stripenr) {
- __u32 ost_idx = v3->lmm_objects[array_idx].l_ost_idx;
+ for (i = 0; i < lod_comp->llc_stripe_count;
+ i++, array_idx = (array_idx + 1) % lod_comp->llc_stripe_count) {
+ __u32 ost_idx = lod_comp->llc_ostlist.op_array[array_idx];
if (!cfs_bitmap_check(m->lod_ost_bitmap, ost_idx)) {
rc = -ENODEV;
}
/*
- * We've successfuly declared (reserved) an object
+ * We've successfully declared (reserved) an object
*/
lod_qos_ost_in_use(env, stripe_count, ost_idx);
stripe[stripe_count] = o;
+ ost_indices[stripe_count] = ost_idx;
stripe_count++;
}
/**
* Allocate a striping on a predefined set of OSTs.
*
- * Allocates new striping starting from OST provided lo->ldo_def_stripe_offset.
+ * Allocates new layout starting from OST index in lo->ldo_stripe_offset.
* Full OSTs are not considered. The exact order of OSTs is not important and
* varies depending on OST status. The allocation procedure prefers the targets
* with precreated objects ready. The number of stripes needed and stripe
- * offset are taken from the object. If that number can not be met, then the
- * function returns a failure and then it's the caller's responsibility to
+ * 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] stripe striping created
- * \param[in] flags not used
- * \param[in] th transaction handle
+ * \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 -E2BIG if no enough OSTs are found
+ * \retval -ENOSPC if no OST objects are available at all
+ * \retval -EFBIG if not enough OST objects are found
* \retval -EINVAL requested offset is invalid
- * \retval negative negated errno on error
+ * \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)
+ 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);
struct obd_statfs *sfs = &lod_env_info(env)->lti_osfs;
struct dt_object *o;
struct ost_pool *osts;
ENTRY;
- rc = lod_qos_ost_in_use_clear(env, lo->ldo_stripenr);
+ LASSERT(lo->ldo_comp_cnt > comp_idx && lo->ldo_comp_entries != NULL);
+ lod_comp = &lo->ldo_comp_entries[comp_idx];
+
+ rc = lod_qos_ost_in_use_clear(env, lod_comp->llc_stripe_count);
if (rc)
GOTO(out, rc);
- if (lo->ldo_pool)
- pool = lod_find_pool(m, lo->ldo_pool);
+ if (lod_comp->llc_pool != NULL)
+ pool = lod_find_pool(m, lod_comp->llc_pool);
if (pool != NULL) {
down_read(&pool_tgt_rw_sem(pool));
/* search loi_ost_idx in ost array */
array_idx = 0;
for (i = 0; i < ost_count; i++) {
- if (osts->op_array[i] == lo->ldo_def_stripe_offset) {
+ if (osts->op_array[i] == lod_comp->llc_stripe_offset) {
array_idx = i;
break;
}
}
if (i == ost_count) {
CERROR("Start index %d not found in pool '%s'\n",
- lo->ldo_def_stripe_offset,
- lo->ldo_pool ? lo->ldo_pool : "");
+ lod_comp->llc_stripe_offset,
+ lod_comp->llc_pool ? lod_comp->llc_pool : "");
GOTO(out, rc = -EINVAL);
}
if (lod_qos_is_ost_used(env, ost_idx, stripe_num))
continue;
+ /*
+ * try not allocate on the OST used by other component
+ */
+ if (speed == 0 && i != 0 &&
+ lod_comp_is_ost_used(env, lo, ost_idx))
+ continue;
+
/* Drop slow OSCs if we can, but not for requested start idx.
*
* This means "if OSC is slow and it is not the requested
}
/*
- * 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 successfuly declared (reserved) an object
+ * We've successfully declared (reserved) an object
*/
lod_qos_ost_in_use(env, stripe_num, ost_idx);
stripe[stripe_num] = o;
+ ost_indices[stripe_num] = ost_idx;
stripe_num++;
/* We have enough stripes */
- if (stripe_num == lo->ldo_stripenr)
+ if (stripe_num == lod_comp->llc_stripe_count)
GOTO(out, rc = 0);
}
if (speed < 2) {
/* If we were passed specific striping params, then a failure to
* meet those requirements is an error, since we can't reallocate
* that memory (it might be part of a larger array or something).
- *
- * We can only get here if lsm_stripe_count was originally > 1.
*/
CERROR("can't lstripe objid "DFID": have %d want %u\n",
PFID(lu_object_fid(lod2lu_obj(lo))), stripe_num,
- lo->ldo_stripenr);
- rc = -EFBIG;
+ lod_comp->llc_stripe_count);
+ rc = stripe_num == 0 ? -ENOSPC : -EFBIG;
out:
if (pool != NULL) {
up_read(&pool_tgt_rw_sem(pool));
* The function allocates OST objects to create a striping. The algorithm
* used is based on weights (currently only using the free space), and it's
* trying to ensure the space is used evenly by OSTs and OSSs. The striping
- * configuration (# of stripes, offset,
- * pool) is taken from the object and is prepared by the caller.
- * If LOV_USES_DEFAULT_STRIPE is not passed and prepared configuration can't
- * be met due to too few OSTs, then allocation fails. If the flag is
- * passed and less than 75% of the requested number of stripes can be
- * allocated, then allocation fails.
- * No concurrent allocation is allowed on the object and this must be
- * ensured by the caller. All the internal structures are protected by the
- * function.
- * The algorithm has two steps: find available OSTs and calucate their weights,
- * then select the OSTs the weights used as the probability. An OST with a
- * higher weight is proportionately more likely to be selected than one with
- * a lower weight.
+ * configuration (# of stripes, offset, pool) is taken from the object and
+ * is prepared by the caller.
*
- * \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
+ * If LOV_USES_DEFAULT_STRIPE is not passed and prepared configuration can't
+ * be met due to too few OSTs, then allocation fails. If the flag is passed
+ * fewer than 3/4 of the requested number of stripes can be allocated, then
+ * allocation fails.
+ *
+ * No concurrent allocation is allowed on the object and this must be ensured
+ * by the caller. All the internal structures are protected by the function.
+ *
+ * The algorithm has two steps: find available OSTs and calculate their
+ * weights, then select the OSTs with their weights used as the probability.
+ * 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[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 -E2BIG if no enough OSTs are found
- * \retval -EINVAL requested offset is invalid
- * \retval negative negated errno on error
+ * \retval -EAGAIN not enough OSTs are found for specified stripe count
+ * \retval -EINVAL requested OST index is invalid
+ * \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)
+ struct dt_object **stripe, __u32 *ost_indices,
+ int flags, struct thandle *th, int comp_idx)
{
- struct lod_device *m = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
- struct obd_statfs *sfs = &lod_env_info(env)->lti_osfs;
+ 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;
- unsigned int i;
- int rc = 0;
- __u32 nfound, good_osts;
- __u32 stripe_cnt = lo->ldo_stripenr;
- __u32 stripe_cnt_min;
- struct pool_desc *pool = NULL;
- struct ost_pool *osts;
+ 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;
+ int rc = 0;
ENTRY;
- stripe_cnt_min = min_stripe_count(stripe_cnt, flags);
- if (stripe_cnt_min < 1)
+ LASSERT(lo->ldo_comp_cnt > comp_idx && lo->ldo_comp_entries != NULL);
+ lod_comp = &lo->ldo_comp_entries[comp_idx];
+ stripe_count = lod_comp->llc_stripe_count;
+ stripe_count_min = min_stripe_count(stripe_count, flags);
+ if (stripe_count_min < 1)
RETURN(-EINVAL);
- if (lo->ldo_pool)
- pool = lod_find_pool(m, lo->ldo_pool);
+ if (lod_comp->llc_pool != NULL)
+ pool = lod_find_pool(lod, lod_comp->llc_pool);
if (pool != NULL) {
down_read(&pool_tgt_rw_sem(pool));
osts = &(pool->pool_obds);
} else {
- osts = &(m->lod_pool_info);
+ osts = &(lod->lod_pool_info);
}
/* Detect -EAGAIN early, before expensive lock is taken. */
- if (!lod_qos_is_usable(m))
+ if (!lod_qos_is_usable(lod))
GOTO(out_nolock, rc = -EAGAIN);
/* Do actual allocation, use write lock here. */
- down_write(&m->lod_qos.lq_rw_sem);
+ down_write(&lod->lod_qos.lq_rw_sem);
/*
* Check again, while we were sleeping on @lq_rw_sem things could
* change.
*/
- if (!lod_qos_is_usable(m))
+ if (!lod_qos_is_usable(lod))
GOTO(out, rc = -EAGAIN);
- rc = lod_qos_calc_ppo(m);
+ rc = lod_qos_calc_ppo(lod);
if (rc)
GOTO(out, rc);
- rc = lod_qos_ost_in_use_clear(env, lo->ldo_stripenr);
+ rc = lod_qos_ost_in_use_clear(env, lod_comp->llc_stripe_count);
if (rc)
GOTO(out, rc);
good_osts = 0;
/* Find all the OSTs that are valid stripe candidates */
for (i = 0; i < osts->op_count; i++) {
- if (!cfs_bitmap_check(m->lod_ost_bitmap, osts->op_array[i]))
+ if (!cfs_bitmap_check(lod->lod_ost_bitmap, osts->op_array[i]))
continue;
- rc = lod_statfs_and_check(env, m, osts->op_array[i], sfs);
+ ost = OST_TGT(lod, osts->op_array[i]);
+ ost->ltd_qos.ltq_usable = 0;
+
+ rc = lod_statfs_and_check(env, lod, osts->op_array[i], sfs);
if (rc) {
/* this OSP doesn't feel well */
continue;
}
- /*
- * skip full devices
- */
- if (lod_qos_dev_is_full(sfs))
+ if (sfs->os_state & OS_STATE_DEGRADED)
continue;
/* Fail Check before osc_precreate() is called
osts->op_array[i] == 0)
continue;
- ost = OST_TGT(m,osts->op_array[i]);
ost->ltd_qos.ltq_usable = 1;
- lod_qos_calc_weight(m, osts->op_array[i]);
+ lod_qos_calc_weight(lod, osts->op_array[i]);
total_weight += ost->ltd_qos.ltq_weight;
good_osts++;
QOS_DEBUG("found %d good osts\n", good_osts);
- if (good_osts < stripe_cnt_min)
+ if (good_osts < stripe_count_min)
GOTO(out, rc = -EAGAIN);
/* We have enough osts */
- if (good_osts < stripe_cnt)
- stripe_cnt = good_osts;
+ if (good_osts < stripe_count)
+ stripe_count = good_osts;
/* Find enough OSTs with weighted random allocation. */
nfound = 0;
- while (nfound < stripe_cnt) {
+ while (nfound < stripe_count) {
__u64 rand, cur_weight;
cur_weight = 0;
rand = 0;
}
- /* On average, this will hit larger-weighted osts more often.
- 0-weight osts will always get used last (only when rand=0) */
+ /* On average, this will hit larger-weighted OSTs more often.
+ * 0-weight OSTs will always get used last (only when rand=0) */
for (i = 0; i < osts->op_count; i++) {
__u32 idx = osts->op_array[i];
- if (!cfs_bitmap_check(m->lod_ost_bitmap, idx))
+ if (lod_should_avoid_ost(lo, lag, idx))
continue;
- ost = OST_TGT(m,idx);
+ ost = OST_TGT(lod, idx);
if (!ost->ltd_qos.ltq_usable)
continue;
cur_weight += ost->ltd_qos.ltq_weight;
- QOS_DEBUG("stripe_cnt=%d nfound=%d cur_weight="LPU64
- " rand="LPU64" total_weight="LPU64"\n",
- stripe_cnt, nfound, cur_weight, rand,
+ QOS_DEBUG("stripe_count=%d nfound=%d cur_weight=%llu "
+ "rand=%llu total_weight=%llu\n",
+ stripe_count, nfound, cur_weight, rand,
total_weight);
if (cur_weight < rand)
continue;
QOS_DEBUG("stripe=%d to idx=%d\n", nfound, idx);
-
/*
* do not put >1 objects on a single OST
*/
- if (lod_qos_is_ost_used(env, idx, nfound))
+ if (lod_qos_is_ost_used(env, idx, nfound) ||
+ lod_comp_is_ost_used(env, lo, idx))
continue;
- lod_qos_ost_in_use(env, nfound, idx);
- o = lod_qos_declare_object_on(env, m, idx, th);
+ o = lod_qos_declare_object_on(env, lod, idx, th);
if (IS_ERR(o)) {
QOS_DEBUG("can't declare object on #%u: %d\n",
idx, (int) PTR_ERR(o));
continue;
}
- stripe[nfound++] = o;
- lod_qos_used(m, osts, idx, &total_weight);
+
+ lod_avoid_update(lo, lag);
+ lod_qos_ost_in_use(env, nfound, idx);
+ stripe[nfound] = o;
+ ost_indices[nfound] = idx;
+ lod_qos_used(lod, osts, idx, &total_weight);
+ nfound++;
rc = 0;
break;
}
}
}
- if (unlikely(nfound != stripe_cnt)) {
+ if (unlikely(nfound != stripe_count)) {
/*
* when the decision to use weighted algorithm was made
* we had enough appropriate OSPs, but this state can
* so it's possible OSP won't be able to provide us with
* an object due to just changed state
*/
- LCONSOLE_INFO("wanted %d, found %d\n", stripe_cnt, nfound);
+ QOS_DEBUG("%s: wanted %d objects, found only %d\n",
+ lod2obd(lod)->obd_name, stripe_count, nfound);
for (i = 0; i < nfound; i++) {
LASSERT(stripe[i] != NULL);
- lu_object_put(env, &stripe[i]->do_lu);
+ dt_object_put(env, stripe[i]);
stripe[i] = NULL;
}
/* makes sense to rebalance next time */
- m->lod_qos.lq_dirty = 1;
- m->lod_qos.lq_same_space = 0;
+ lod->lod_qos.lq_dirty = 1;
+ lod->lod_qos.lq_same_space = 0;
rc = -EAGAIN;
}
out:
- up_write(&m->lod_qos.lq_rw_sem);
+ up_write(&lod->lod_qos.lq_rw_sem);
out_nolock:
if (pool != NULL) {
* If the passed one is 0, then the filesystem's default one is used.
*
* \param[in] lod LOD device
- * \param[in] magic the format if striping
+ * \param[in] lo The lod_object
* \param[in] stripe_count count the caller would like to use
*
* \retval the maximum usable stripe count
*/
-static __u16 lod_get_stripecnt(struct lod_device *lod, __u32 magic,
- __u16 stripe_count)
+__u16 lod_get_stripe_count(struct lod_device *lod, struct lod_object *lo,
+ __u16 stripe_count)
{
__u32 max_stripes = LOV_MAX_STRIPE_COUNT_OLD;
stripe_count = 1;
/* stripe count is based on whether OSD can handle larger EA sizes */
- if (lod->lod_osd_max_easize > 0)
- max_stripes = lov_mds_md_max_stripe_count(
- lod->lod_osd_max_easize, magic);
+ if (lod->lod_osd_max_easize > 0) {
+ unsigned int easize = lod->lod_osd_max_easize;
+ int i;
+
+ if (lo->ldo_is_composite) {
+ struct lod_layout_component *lod_comp;
+ unsigned int header_sz = sizeof(struct lov_comp_md_v1);
+
+ header_sz += sizeof(struct lov_comp_md_entry_v1) *
+ lo->ldo_comp_cnt;
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ lod_comp = &lo->ldo_comp_entries[i];
+ if (lod_comp->llc_flags & LCME_FL_INIT)
+ header_sz += lov_mds_md_size(
+ lod_comp->llc_stripe_count,
+ LOV_MAGIC_V3);
+ }
+ if (easize > header_sz)
+ easize -= header_sz;
+ else
+ easize = 0;
+ }
+
+ max_stripes = lov_mds_md_max_stripe_count(easize, LOV_MAGIC_V3);
+ }
return (stripe_count < max_stripes) ? stripe_count : max_stripes;
}
* \retval 0 on success
* \retval negative negated errno on error
*/
-static int lod_use_defined_striping(const struct lu_env *env,
- struct lod_object *mo,
- const struct lu_buf *buf)
+int lod_use_defined_striping(const struct lu_env *env,
+ struct lod_object *mo,
+ const struct lu_buf *buf)
{
+ struct lod_layout_component *lod_comp;
struct lov_mds_md_v1 *v1 = buf->lb_buf;
struct lov_mds_md_v3 *v3 = buf->lb_buf;
+ struct lov_comp_md_v1 *comp_v1 = NULL;
struct lov_ost_data_v1 *objs;
- __u32 magic;
- int rc = 0;
+ __u32 magic;
+ __u16 comp_cnt;
+ __u16 mirror_cnt;
+ int rc = 0, i;
ENTRY;
- magic = le32_to_cpu(v1->lmm_magic);
- if (magic == LOV_MAGIC_V1_DEF) {
- magic = LOV_MAGIC_V1;
- objs = &v1->lmm_objects[0];
- } else if (magic == LOV_MAGIC_V3_DEF) {
- magic = LOV_MAGIC_V3;
- objs = &v3->lmm_objects[0];
- lod_object_set_pool(mo, v3->lmm_pool_name);
+ 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)
+ 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)
+ 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 {
- GOTO(out, rc = -EINVAL);
+ mo->ldo_is_composite = 0;
+ comp_cnt = 1;
+ mirror_cnt = 0;
}
-
- mo->ldo_pattern = le32_to_cpu(v1->lmm_pattern);
- mo->ldo_stripe_size = le32_to_cpu(v1->lmm_stripe_size);
- mo->ldo_stripenr = le16_to_cpu(v1->lmm_stripe_count);
mo->ldo_layout_gen = le16_to_cpu(v1->lmm_layout_gen);
- /* fixup for released file before object initialization */
- if (mo->ldo_pattern & LOV_PATTERN_F_RELEASED) {
- mo->ldo_released_stripenr = mo->ldo_stripenr;
- mo->ldo_stripenr = 0;
- }
+ rc = lod_alloc_comp_entries(mo, mirror_cnt, comp_cnt);
+ if (rc)
+ GOTO(unlock, rc);
+
+ for (i = 0; i < comp_cnt; i++) {
+ struct lu_extent *ext;
+ char *pool_name;
+ __u32 offs;
+
+ lod_comp = &mo->ldo_comp_entries[i];
+
+ if (mo->ldo_is_composite) {
+ offs = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
+ v1 = (struct lov_mds_md_v1 *)((char *)comp_v1 + offs);
+ v3 = (struct lov_mds_md_v3 *)v1;
+ magic = le32_to_cpu(v1->lmm_magic);
+
+ ext = &comp_v1->lcm_entries[i].lcme_extent;
+ lod_comp->llc_extent.e_start =
+ le64_to_cpu(ext->e_start);
+ lod_comp->llc_extent.e_end = le64_to_cpu(ext->e_end);
+ lod_comp->llc_flags =
+ le32_to_cpu(comp_v1->lcm_entries[i].lcme_flags);
+ if (lod_comp->llc_flags & LCME_FL_NOSYNC)
+ lod_comp->llc_timestamp = le64_to_cpu(
+ comp_v1->lcm_entries[i].lcme_timestamp);
+ lod_comp->llc_id =
+ le32_to_cpu(comp_v1->lcm_entries[i].lcme_id);
+ if (lod_comp->llc_id == LCME_ID_INVAL)
+ GOTO(out, rc = -EINVAL);
+ }
- LASSERT(buf->lb_len >= lov_mds_md_size(mo->ldo_stripenr, magic));
+ pool_name = NULL;
+ if (magic == LOV_MAGIC_V1) {
+ objs = &v1->lmm_objects[0];
+ } else if (magic == LOV_MAGIC_V3) {
+ objs = &v3->lmm_objects[0];
+ if (v3->lmm_pool_name[0] != '\0')
+ pool_name = v3->lmm_pool_name;
+ } else {
+ CDEBUG(D_LAYOUT, "Invalid magic %x\n", magic);
+ GOTO(out, rc = -EINVAL);
+ }
- if (mo->ldo_stripenr > 0)
- rc = lod_initialize_objects(env, mo, objs);
+ lod_comp->llc_pattern = le32_to_cpu(v1->lmm_pattern);
+ lod_comp->llc_stripe_size = le32_to_cpu(v1->lmm_stripe_size);
+ lod_comp->llc_stripe_count = le16_to_cpu(v1->lmm_stripe_count);
+ lod_comp->llc_layout_gen = le16_to_cpu(v1->lmm_layout_gen);
+ /**
+ * The stripe_offset of an uninit-ed component is stored in
+ * the lmm_layout_gen
+ */
+ if (mo->ldo_is_composite && !lod_comp_inited(lod_comp))
+ lod_comp->llc_stripe_offset = lod_comp->llc_layout_gen;
+ lod_obj_set_pool(mo, i, pool_name);
+
+ if ((!mo->ldo_is_composite || lod_comp_inited(lod_comp)) &&
+ !(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
+ !(lod_comp->llc_pattern & LOV_PATTERN_MDT)) {
+ rc = lod_initialize_objects(env, mo, objs, i);
+ if (rc)
+ GOTO(out, rc);
+ }
+ }
+ rc = lod_fill_mirrors(mo);
+ GOTO(out, rc);
out:
+ if (rc)
+ lod_striping_free_nolock(env, mo);
+unlock:
+ mutex_unlock(&mo->ldo_layout_mutex);
+
RETURN(rc);
}
* \retval 0 on success
* \retval negative negated errno on error
*/
-static int lod_qos_parse_config(const struct lu_env *env,
- struct lod_object *lo,
- const struct lu_buf *buf)
+int lod_qos_parse_config(const struct lu_env *env, struct lod_object *lo,
+ const struct lu_buf *buf)
{
- struct lod_device *d = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
- struct lov_user_md_v1 *v1 = NULL;
- struct lov_user_md_v3 *v3 = NULL;
- char *pool_name = NULL;
- __u32 magic;
- int rc;
- unsigned int size;
+ struct lod_layout_component *lod_comp;
+ struct lod_device *d = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
+ struct lov_desc *desc = &d->lod_desc;
+ 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;
+ int i, rc;
ENTRY;
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);
+
v3 = buf->lb_buf;
v1 = buf->lb_buf;
+ comp_v1 = buf->lb_buf;
magic = v1->lmm_magic;
- if (unlikely(magic == LOV_MAGIC_V1_DEF || magic == LOV_MAGIC_V3_DEF)) {
+ if (unlikely(le32_to_cpu(magic) & LOV_MAGIC_DEFINED)) {
/* try to use as fully defined striping */
rc = lod_use_defined_striping(env, lo, buf);
RETURN(rc);
magic = v1->lmm_magic;
/* fall through */
case LOV_USER_MAGIC_V1:
- size = sizeof(*v1);
break;
-
case __swab32(LOV_USER_MAGIC_V3):
lustre_swab_lov_user_md_v3(v3);
magic = v3->lmm_magic;
/* fall through */
case LOV_USER_MAGIC_V3:
- size = sizeof(*v3);
- pool_name = v3->lmm_pool_name;
break;
-
case __swab32(LOV_USER_MAGIC_SPECIFIC):
lustre_swab_lov_user_md_v3(v3);
lustre_swab_lov_user_md_objects(v3->lmm_objects,
magic = v3->lmm_magic;
/* fall through */
case LOV_USER_MAGIC_SPECIFIC:
- if (v3->lmm_stripe_offset == LOV_OFFSET_DEFAULT)
- v3->lmm_stripe_offset = v3->lmm_objects[0].l_ost_idx;
- if (v3->lmm_pool_name[0] != '\0')
- pool_name = v3->lmm_pool_name;
- size = lov_user_md_size(v3->lmm_stripe_count,
- LOV_USER_MAGIC_SPECIFIC);
break;
-
+ case __swab32(LOV_USER_MAGIC_COMP_V1):
+ lustre_swab_lov_comp_md_v1(comp_v1);
+ magic = comp_v1->lcm_magic;
+ /* fall trhough */
+ case LOV_USER_MAGIC_COMP_V1:
+ break;
default:
CERROR("%s: unrecognized magic %X\n",
lod2obd(d)->obd_name, magic);
RETURN(-EINVAL);
}
- if (unlikely(buf->lb_len < size)) {
- CERROR("%s: wrong size: %zd, expect: %u\n",
- lod2obd(d)->obd_name, buf->lb_len, size);
- RETURN(-EINVAL);
- }
-
lustre_print_user_md(D_OTHER, v1, "parse config");
- v1->lmm_magic = magic;
- if (v1->lmm_pattern == 0)
- v1->lmm_pattern = LOV_PATTERN_RAID0;
- if (lov_pattern(v1->lmm_pattern) != LOV_PATTERN_RAID0) {
- CERROR("%s: invalid pattern: %x\n",
- lod2obd(d)->obd_name, v1->lmm_pattern);
- RETURN(-EINVAL);
+ if (magic == LOV_USER_MAGIC_COMP_V1) {
+ comp_cnt = comp_v1->lcm_entry_count;
+ 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;
+ mirror_cnt = 0;
+ lo->ldo_is_composite = 0;
}
- lo->ldo_pattern = v1->lmm_pattern;
- if (v1->lmm_stripe_size > 0)
- lo->ldo_stripe_size = v1->lmm_stripe_size;
+ rc = lod_alloc_comp_entries(lo, mirror_cnt, comp_cnt);
+ if (rc)
+ RETURN(rc);
+
+ LASSERT(lo->ldo_comp_entries);
+
+ for (i = 0; i < comp_cnt; i++) {
+ struct pool_desc *pool;
+ struct lu_extent *ext;
+ char *pool_name;
+
+ lod_comp = &lo->ldo_comp_entries[i];
+
+ if (lo->ldo_is_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_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) {
+ 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) {
+ 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 (lo->ldo_stripe_size & (LOV_MIN_STRIPE_SIZE - 1))
- lo->ldo_stripe_size = LOV_MIN_STRIPE_SIZE;
+ if (v1->lmm_pattern == 0)
+ v1->lmm_pattern = LOV_PATTERN_RAID0;
+ if (lov_pattern(v1->lmm_pattern) != LOV_PATTERN_RAID0 &&
+ lov_pattern(v1->lmm_pattern) != LOV_PATTERN_MDT) {
+ CDEBUG(D_LAYOUT, "%s: invalid pattern: %x\n",
+ lod2obd(d)->obd_name, v1->lmm_pattern);
+ GOTO(free_comp, rc = -EINVAL);
+ }
+
+ lod_comp->llc_pattern = v1->lmm_pattern;
+ lod_comp->llc_stripe_size = desc->ld_default_stripe_size;
+ if (v1->lmm_stripe_size)
+ lod_comp->llc_stripe_size = v1->lmm_stripe_size;
- if (v1->lmm_stripe_count > 0)
- lo->ldo_stripenr = v1->lmm_stripe_count;
+ lod_comp->llc_stripe_count = desc->ld_default_stripe_count;
+ if (v1->lmm_stripe_count ||
+ lov_pattern(v1->lmm_pattern) == LOV_PATTERN_MDT)
+ lod_comp->llc_stripe_count = v1->lmm_stripe_count;
- lo->ldo_def_stripe_offset = v1->lmm_stripe_offset;
+ lod_comp->llc_stripe_offset = v1->lmm_stripe_offset;
+ lod_obj_set_pool(lo, i, pool_name);
- lod_object_set_pool(lo, NULL);
- if (pool_name != NULL) {
- struct pool_desc *pool;
+ LASSERT(ergo(lov_pattern(lod_comp->llc_pattern) ==
+ LOV_PATTERN_MDT, lod_comp->llc_stripe_count == 0));
+
+ if (pool_name == NULL)
+ continue;
/* In the function below, .hs_keycmp resolves to
* pool_hashkey_keycmp() */
/* coverity[overrun-buffer-val] */
pool = lod_find_pool(d, pool_name);
- if (pool != NULL) {
- if (lo->ldo_def_stripe_offset != LOV_OFFSET_DEFAULT) {
- rc = lod_check_index_in_pool(
- lo->ldo_def_stripe_offset, pool);
- if (rc < 0) {
- lod_pool_putref(pool);
- CERROR("%s: invalid offset, %u\n",
- lod2obd(d)->obd_name,
- lo->ldo_def_stripe_offset);
- RETURN(-EINVAL);
- }
+ if (pool == NULL)
+ continue;
+
+ if (lod_comp->llc_stripe_offset != LOV_OFFSET_DEFAULT) {
+ rc = lod_check_index_in_pool(
+ lod_comp->llc_stripe_offset, pool);
+ if (rc < 0) {
+ lod_pool_putref(pool);
+ CDEBUG(D_LAYOUT, "%s: invalid offset, %u\n",
+ lod2obd(d)->obd_name,
+ lod_comp->llc_stripe_offset);
+ GOTO(free_comp, rc = -EINVAL);
}
+ }
- if (lo->ldo_stripenr > pool_tgt_count(pool))
- lo->ldo_stripenr = pool_tgt_count(pool);
+ if (lod_comp->llc_stripe_count > pool_tgt_count(pool))
+ lod_comp->llc_stripe_count = pool_tgt_count(pool);
- lod_pool_putref(pool);
+ lod_pool_putref(pool);
+ }
+
+ RETURN(0);
+
+free_comp:
+ lod_free_comp_entries(lo);
+ RETURN(rc);
+}
+
+/**
+ * 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;
}
+ }
- lod_object_set_pool(lo, pool_name);
+ if (!lag->lag_ost_avoid_bitmap) {
+ bitmap = CFS_ALLOCATE_BITMAP(ltds->ltd_tgtnr);
+ if (!bitmap)
+ return -ENOMEM;
}
- /* fixup for released file */
- if (lo->ldo_pattern & LOV_PATTERN_F_RELEASED) {
- lo->ldo_released_stripenr = lo->ldo_stripenr;
- lo->ldo_stripenr = 0;
+ 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;
+ }
}
- RETURN(0);
+ 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,
+ * NOTE: don't use lod_comp_inited(comp) to judge
+ * whether @comp has been inited, since during
+ * declare phase, comp->llc_stripe has been allocated
+ * while it's init flag not been set until the exec
+ * phase.
+ */
+ if (!lu_extent_is_overlapped(&comp->llc_extent,
+ &lod_comp->llc_extent) ||
+ !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;
+
+ QOS_DEBUG("OST%d used in conflicting mirror "
+ "component\n", ost->ltd_index);
+ 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. A buffer containing
- * configuration hints can be provided optionally. The function tries QoS
+ * The function creates a new striping for the object. The function tries QoS
* algorithm first unless free space is distributed evenly among OSTs, but
* by default RR algorithm is preferred due to internal concurrency (QoS is
* serialized). The caller must ensure no concurrent calls to the function
* \param[in] env execution environment for this thread
* \param[in] lo LOD object
* \param[in] attr attributes OST objects will be declared with
- * \param[in] buf suggested striping configuration or NULL
* \param[in] th transaction handle
+ * \param[in] comp_idx index of ldo_comp_entries
*
* \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, const struct lu_buf *buf,
- struct thandle *th)
+ struct lu_attr *attr, struct thandle *th,
+ 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;
+ 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);
+ LASSERT(lo->ldo_comp_cnt > comp_idx && lo->ldo_comp_entries != NULL);
+ lod_comp = &lo->ldo_comp_entries[comp_idx];
- /* no OST available */
- /* XXX: should we be waiting a bit to prevent failures during
- * cluster initialization? */
- if (d->lod_ostnr == 0)
- GOTO(out, rc = -EIO);
-
- /*
- * by this time, the object's ldo_stripenr and ldo_stripe_size
- * contain default value for striping: taken from the parent
- * or from filesystem defaults
- *
- * in case the caller is passing lovea with new striping config,
- * we may need to parse lovea and apply new configuration
- */
- rc = lod_qos_parse_config(env, lo, buf);
- if (rc)
- GOTO(out, rc);
-
- /* A released file is being created */
- if (lo->ldo_stripenr == 0)
- GOTO(out, rc = 0);
+ /* A released component is being created */
+ if (lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
+ RETURN(0);
- if (likely(lo->ldo_stripe == NULL)) {
- struct lov_user_md *lum = NULL;
+ /* A Data-on-MDT component is being created */
+ if (lov_pattern(lod_comp->llc_pattern) == LOV_PATTERN_MDT)
+ RETURN(0);
+ if (likely(lod_comp->llc_stripe == NULL)) {
/*
* no striping has been created so far
*/
- LASSERT(lo->ldo_stripenr > 0);
+ LASSERT(lod_comp->llc_stripe_count);
/*
* statfs and check OST targets now, since ld_active_tgt_count
* could be changed if some OSTs are [de]activated manually.
*/
lod_qos_statfs_update(env, d);
- lo->ldo_stripenr = lod_get_stripecnt(d, LOV_MAGIC,
- lo->ldo_stripenr);
-
- stripe_len = lo->ldo_stripenr;
+ stripe_len = lod_get_stripe_count(d, lo,
+ lod_comp->llc_stripe_count);
+ if (stripe_len == 0)
+ GOTO(out, rc = -ERANGE);
+ lod_comp->llc_stripe_count = stripe_len;
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 */
- CDEBUG(D_OTHER, "tgt_count %d stripenr %d\n",
+ CDEBUG(D_OTHER, "tgt_count %d stripe_count %d\n",
d->lod_desc.ld_tgt_count, stripe_len);
- if (buf != NULL && buf->lb_buf != NULL)
- lum = buf->lb_buf;
+ if (lod_comp->llc_ostlist.op_array &&
+ lod_comp->llc_ostlist.op_count) {
+ rc = lod_alloc_ost_list(env, lo, stripe, ost_indices,
+ th, comp_idx);
+ } else if (lod_comp->llc_stripe_offset == LOV_OFFSET_DEFAULT) {
+ /**
+ * 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);
+
+ QOS_DEBUG("collecting conflict osts for comp[%d]\n",
+ comp_idx);
+ lod_collect_avoidance(lo, lag, comp_idx);
- if (lum != NULL && lum->lmm_magic == LOV_USER_MAGIC_SPECIFIC) {
- rc = lod_alloc_ost_list(env, lo, stripe, lum, th);
- } else if (lo->ldo_def_stripe_offset == LOV_OFFSET_DEFAULT) {
- rc = lod_alloc_qos(env, lo, stripe, flag, th);
+ 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);
+ rc = lod_alloc_rr(env, lo, stripe, ost_indices,
+ flag, th, comp_idx);
} else {
- rc = lod_alloc_specific(env, lo, stripe, flag, th);
+ 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)
- lu_object_put(env, &stripe[i]->do_lu);
-
- OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
- lo->ldo_stripenr = 0;
+ dt_object_put(env, stripe[i]);
+ lod_comp->llc_stripe_count = 0;
} else {
- lo->ldo_stripe = stripe;
- lo->ldo_stripes_allocated = stripe_len;
+ lod_comp->llc_stripe = stripe;
+ lod_comp->llc_ost_indices = ost_indices;
+ lod_comp->llc_stripes_allocated = stripe_len;
}
} else {
/*
* striping (not a hint), so it allocated all the object
* now we need to create them
*/
- for (i = 0; i < lo->ldo_stripenr; i++) {
+ for (i = 0; i < lod_comp->llc_stripe_count; i++) {
struct dt_object *o;
- o = lo->ldo_stripe[i];
+ o = lod_comp->llc_stripe[i];
LASSERT(o);
- rc = dt_declare_create(env, o, attr, NULL, NULL, th);
- if (rc) {
+ rc = lod_sub_declare_create(env, o, attr, NULL,
+ NULL, th);
+ if (rc < 0) {
CERROR("can't declare create: %d\n", rc);
break;
}
}
+ /**
+ * Clear LCME_FL_INIT for the component so that
+ * lod_striping_create() can create the striping objects
+ * in replay.
+ */
+ lod_comp_unset_init(lod_comp);
}
out:
+ if (rc < 0) {
+ if (stripe)
+ OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
+ if (ost_indices)
+ OBD_FREE(ost_indices,
+ sizeof(*ost_indices) * stripe_len);
+ }
RETURN(rc);
}
+int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
+ struct lu_attr *attr, const struct lu_buf *buf,
+ struct thandle *th)
+
+{
+ struct lod_device *d = lu2lod_dev(lod2lu_obj(lo)->lo_dev);
+ uint64_t size = 0;
+ int i;
+ int rc;
+ ENTRY;
+
+ LASSERT(lo);
+
+ /* no OST available */
+ /* XXX: should we be waiting a bit to prevent failures during
+ * cluster initialization? */
+ if (d->lod_ostnr == 0)
+ RETURN(-EIO);
+
+ /*
+ * by this time, the object's ldo_stripe_count and ldo_stripe_size
+ * contain default value for striping: taken from the parent
+ * or from filesystem defaults
+ *
+ * in case the caller is passing lovea with new striping config,
+ * we may need to parse lovea and apply new configuration
+ */
+ rc = lod_qos_parse_config(env, lo, buf);
+ if (rc)
+ RETURN(rc);
+
+ if (attr->la_valid & LA_SIZE)
+ size = attr->la_size;
+
+ /**
+ * prepare OST object creation for the component covering file's
+ * size, the 1st component (including plain layout file) is always
+ * instantiated.
+ */
+ for (i = 0; i < lo->ldo_comp_cnt; i++) {
+ struct lod_layout_component *lod_comp;
+ struct lu_extent *extent;
+
+ lod_comp = &lo->ldo_comp_entries[i];
+ extent = &lod_comp->llc_extent;
+ QOS_DEBUG("comp[%d] %lld "DEXT"\n", i, size, PEXT(extent));
+ if (!lo->ldo_is_composite || size >= extent->e_start) {
+ rc = lod_qos_prep_create(env, lo, attr, th, i);
+ if (rc)
+ break;
+ }
+ }
+
+ RETURN(rc);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff