*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_LMV
#include <linux/module.h>
#include <linux/init.h>
#include <linux/user_namespace.h>
-#ifdef HAVE_UIDGID_HEADER
-# include <linux/uidgid.h>
-#endif
+#include <linux/uidgid.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/mm.h>
void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt,
int activate)
{
- if (tgt->ltd_active == activate)
- return;
+ if (tgt->ltd_active == activate)
+ return;
- tgt->ltd_active = activate;
- lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
+ tgt->ltd_active = activate;
+ lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count +=
+ (activate ? 1 : -1);
tgt->ltd_exp->exp_obd->obd_inactive = !activate;
}
return rc;
}
-struct obd_uuid *lmv_get_uuid(struct obd_export *exp)
+static struct obd_uuid *lmv_get_uuid(struct obd_export *exp)
{
struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
struct lmv_tgt_desc *tgt = lmv_tgt(lmv, 0);
- return (tgt == NULL) ? NULL : obd_get_uuid(tgt->ltd_exp);
+ return tgt ? obd_get_uuid(tgt->ltd_exp) : NULL;
}
static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
#define MAX_STRING_SIZE 128
-int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
+static int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
{
- struct lmv_obd *lmv = &obd->u.lmv;
- struct obd_device *mdc_obd;
- struct obd_export *mdc_exp;
- struct lu_fld_target target;
- int rc;
- ENTRY;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct obd_device *mdc_obd;
+ struct obd_export *mdc_exp;
+ struct lu_fld_target target;
+ int rc;
+ ENTRY;
mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
&obd->obd_uuid);
rc = obd_connect(NULL, &mdc_exp, mdc_obd, &obd->obd_uuid,
&lmv->conn_data, lmv->lmv_cache);
- if (rc) {
- CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
- RETURN(rc);
- }
+ if (rc) {
+ CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
+ RETURN(rc);
+ }
/*
* Init fid sequence client for this mdc and add new fld target.
tgt->ltd_active = 1;
tgt->ltd_exp = mdc_exp;
- lmv->desc.ld_active_tgt_count++;
+ lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count++;
md_init_ea_size(tgt->ltd_exp, lmv->max_easize, lmv->max_def_easize);
- rc = lqos_add_tgt(&lmv->lmv_qos, tgt);
+ rc = lu_qos_add_tgt(&lmv->lmv_qos, tgt);
if (rc) {
obd_disconnect(mdc_exp);
RETURN(rc);
}
CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
- mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
- atomic_read(&obd->obd_refcount));
+ mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
+ atomic_read(&obd->obd_refcount));
lmv_statfs_check_update(obd, tgt);
static void lmv_del_target(struct lmv_obd *lmv, struct lu_tgt_desc *tgt)
{
LASSERT(tgt);
- lqos_del_tgt(&lmv->lmv_qos, tgt);
- lu_tgt_descs_del(&lmv->lmv_mdt_descs, tgt);
+ ltd_del_tgt(&lmv->lmv_mdt_descs, tgt);
OBD_FREE_PTR(tgt);
}
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
struct lu_tgt_descs *ltd = &lmv->lmv_mdt_descs;
- int orig_tgt_count = 0;
int rc = 0;
ENTRY;
tgt->ltd_active = 0;
mutex_lock(<d->ltd_mutex);
- rc = lu_tgt_descs_add(ltd, tgt);
- if (!rc && index >= lmv->desc.ld_tgt_count) {
- orig_tgt_count = lmv->desc.ld_tgt_count;
- lmv->desc.ld_tgt_count = index + 1;
- }
+ rc = ltd_add_tgt(ltd, tgt);
mutex_unlock(<d->ltd_mutex);
if (rc)
RETURN(0);
rc = lmv_connect_mdc(obd, tgt);
- if (rc != 0) {
- mutex_lock(<d->ltd_mutex);
- lmv->desc.ld_tgt_count = orig_tgt_count;
- memset(tgt, 0, sizeof(*tgt));
- mutex_unlock(<d->ltd_mutex);
- } else {
+ if (!rc) {
int easize = sizeof(struct lmv_stripe_md) +
- lmv->desc.ld_tgt_count * sizeof(struct lu_fid);
+ lmv->lmv_mdt_count * sizeof(struct lu_fid);
+
lmv_init_ea_size(obd->obd_self_export, easize, 0);
}
if (lmv->connected)
GOTO(unlock, rc = 0);
- if (lmv->desc.ld_tgt_count == 0) {
+ if (!lmv->lmv_mdt_count) {
CERROR("%s: no targets configured: rc = -EINVAL\n",
obd->obd_name);
GOTO(unlock, rc = -EINVAL);
}
lmv->connected = 1;
- easize = lmv_mds_md_size(lmv->desc.ld_tgt_count, LMV_MAGIC);
+ easize = lmv_mds_md_size(lmv->lmv_mdt_count, LMV_MAGIC);
lmv_init_ea_size(obd->obd_self_export, easize, 0);
EXIT;
unlock:
if (!tgt->ltd_exp)
continue;
- --lmv->desc.ld_active_tgt_count;
+ --lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count;
obd_disconnect(tgt->ltd_exp);
}
static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
{
- struct lmv_obd *lmv = &obd->u.lmv;
- struct obd_device *mdc_obd;
- int rc;
- ENTRY;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ struct obd_device *mdc_obd;
+ int rc;
+ ENTRY;
- LASSERT(tgt != NULL);
- LASSERT(obd != NULL);
+ LASSERT(tgt != NULL);
+ LASSERT(obd != NULL);
- mdc_obd = class_exp2obd(tgt->ltd_exp);
+ mdc_obd = class_exp2obd(tgt->ltd_exp);
- if (mdc_obd) {
- mdc_obd->obd_force = obd->obd_force;
- mdc_obd->obd_fail = obd->obd_fail;
- mdc_obd->obd_no_recov = obd->obd_no_recov;
+ if (mdc_obd) {
+ mdc_obd->obd_force = obd->obd_force;
+ mdc_obd->obd_fail = obd->obd_fail;
+ mdc_obd->obd_no_recov = obd->obd_no_recov;
if (lmv->lmv_tgts_kobj)
sysfs_remove_link(lmv->lmv_tgts_kobj,
rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
if (rc)
- CERROR("Can't finanize fids factory\n");
-
- CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
- tgt->ltd_exp->exp_obd->obd_name,
- tgt->ltd_exp->exp_obd->obd_uuid.uuid);
-
- obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
- rc = obd_disconnect(tgt->ltd_exp);
- if (rc) {
- if (tgt->ltd_active) {
- CERROR("Target %s disconnect error %d\n",
- tgt->ltd_uuid.uuid, rc);
- }
- }
+ CERROR("Can't finalize fids factory\n");
+
+ CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
+ tgt->ltd_exp->exp_obd->obd_name,
+ tgt->ltd_exp->exp_obd->obd_uuid.uuid);
- lmv_activate_target(lmv, tgt, 0);
- tgt->ltd_exp = NULL;
- RETURN(0);
+ obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
+ rc = obd_disconnect(tgt->ltd_exp);
+ if (rc) {
+ if (tgt->ltd_active) {
+ CERROR("Target %s disconnect error %d\n",
+ tgt->ltd_uuid.uuid, rc);
+ }
+ }
+
+ lmv_activate_target(lmv, tgt, 0);
+ tgt->ltd_exp = NULL;
+ RETURN(0);
}
static int lmv_disconnect(struct obd_export *exp)
if (lmv->lmv_tgts_kobj)
kobject_put(lmv->lmv_tgts_kobj);
- if (!lmv->connected)
- class_export_put(exp);
- rc = class_disconnect(exp);
lmv->connected = 0;
+ rc = class_disconnect(exp);
RETURN(rc);
}
static int lmv_fid2path(struct obd_export *exp, int len, void *karg,
void __user *uarg)
{
- struct obd_device *obddev = class_exp2obd(exp);
- struct lmv_obd *lmv = &obddev->u.lmv;
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obd->u.lmv;
struct getinfo_fid2path *gf;
struct lmv_tgt_desc *tgt;
struct getinfo_fid2path *remote_gf = NULL;
static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
int len, void *karg, void __user *uarg)
{
- struct obd_device *obddev = class_exp2obd(exp);
- struct lmv_obd *lmv = &obddev->u.lmv;
+ struct obd_device *obd = class_exp2obd(exp);
+ struct lmv_obd *lmv = &obd->u.lmv;
struct lu_tgt_desc *tgt = NULL;
int set = 0;
- __u32 count = lmv->desc.ld_tgt_count;
+ __u32 count = lmv->lmv_mdt_count;
int rc = 0;
ENTRY;
__u32 index;
memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
- if (index >= count)
+
+ if (index >= lmv->lmv_mdt_descs.ltd_tgts_size)
RETURN(-ENODEV);
tgt = lmv_tgt(lmv, index);
- if (!tgt || !tgt->ltd_active)
+ if (!tgt)
+ RETURN(-EAGAIN);
+
+ if (!tgt->ltd_active)
RETURN(-ENODATA);
mdc_obd = class_exp2obd(tgt->ltd_exp);
case OBD_IOC_QUOTACTL: {
struct if_quotactl *qctl = karg;
struct obd_quotactl *oqctl;
+ struct obd_import *imp;
if (qctl->qc_valid == QC_MDTIDX) {
- if (count <= qctl->qc_idx)
- RETURN(-EINVAL);
-
tgt = lmv_tgt(lmv, qctl->qc_idx);
- if (!tgt || !tgt->ltd_exp)
- RETURN(-EINVAL);
} else if (qctl->qc_valid == QC_UUID) {
lmv_foreach_tgt(lmv, tgt) {
if (!obd_uuid_equals(&tgt->ltd_uuid,
RETURN(-EINVAL);
}
- if (tgt->ltd_index >= count)
- RETURN(-EAGAIN);
+ if (!tgt)
+ RETURN(-ENODEV);
+
+ if (!tgt->ltd_exp)
+ RETURN(-EINVAL);
+
+ imp = class_exp2cliimp(tgt->ltd_exp);
+ if (!tgt->ltd_active && imp->imp_state != LUSTRE_IMP_IDLE) {
+ qctl->qc_valid = QC_MDTIDX;
+ qctl->obd_uuid = tgt->ltd_uuid;
+ RETURN(-ENODATA);
+ }
- LASSERT(tgt != NULL && tgt->ltd_exp != NULL);
OBD_ALLOC_PTR(oqctl);
if (!oqctl)
RETURN(-ENOMEM);
case LL_IOC_HSM_CT_START: {
struct lustre_kernelcomm *lk = karg;
if (lk->lk_flags & LK_FLG_STOP)
- rc = lmv_hsm_ct_unregister(obddev, cmd, len, lk, uarg);
+ rc = lmv_hsm_ct_unregister(obd, cmd, len, lk, uarg);
else
- rc = lmv_hsm_ct_register(obddev, cmd, len, lk, uarg);
+ rc = lmv_hsm_ct_register(obd, cmd, len, lk, uarg);
break;
}
default:
/* ll_umount_begin() sets force flag but for lmv, not
* mdc. Let's pass it through */
mdc_obd = class_exp2obd(tgt->ltd_exp);
- mdc_obd->obd_force = obddev->obd_force;
+ mdc_obd->obd_force = obd->obd_force;
err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
if (err) {
if (tgt->ltd_active) {
RETURN(rc);
}
-/**
- * This is _inode_ placement policy function (not name).
- */
-static u32 lmv_placement_policy(struct obd_device *obd,
- struct md_op_data *op_data)
+int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
+ struct lu_fid *fid, struct md_op_data *op_data)
{
+ struct obd_device *obd = class_exp2obd(exp);
struct lmv_obd *lmv = &obd->u.lmv;
- struct lmv_user_md *lum;
- u32 mdt;
-
- ENTRY;
-
- if (lmv->desc.ld_tgt_count == 1)
- RETURN(0);
-
- lum = op_data->op_data;
- /*
- * Choose MDT by
- * 1. See if the stripe offset is specified by lum.
- * 2. If parent has default LMV, and its hash type is "space", choose
- * MDT with QoS. (see lmv_locate_tgt_qos()).
- * 3. Then check if default LMV stripe offset is not -1.
- * 4. Finally choose MDS by name hash if the parent
- * is striped directory. (see lmv_locate_tgt()).
- *
- * presently explicit MDT location is not supported
- * for foreign dirs (as it can't be embedded into free
- * format LMV, like with lum_stripe_offset), so we only
- * rely on default stripe offset or then name hashing.
- */
- if (op_data->op_cli_flags & CLI_SET_MEA && lum != NULL &&
- le32_to_cpu(lum->lum_magic != LMV_MAGIC_FOREIGN) &&
- le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) {
- mdt = le32_to_cpu(lum->lum_stripe_offset);
- } else if (op_data->op_code == LUSTRE_OPC_MKDIR &&
- !lmv_dir_striped(op_data->op_mea1) &&
- lmv_dir_qos_mkdir(op_data->op_default_mea1)) {
- mdt = op_data->op_mds;
- } else if (op_data->op_code == LUSTRE_OPC_MKDIR &&
- op_data->op_default_mea1 &&
- op_data->op_default_mea1->lsm_md_master_mdt_index !=
- (__u32)-1) {
- mdt = op_data->op_default_mea1->lsm_md_master_mdt_index;
- op_data->op_mds = mdt;
- } else {
- mdt = op_data->op_mds;
- }
-
- RETURN(mdt);
-}
-
-int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
-{
struct lmv_tgt_desc *tgt;
int rc;
ENTRY;
- tgt = lmv_tgt(lmv, mds);
+ LASSERT(op_data);
+ LASSERT(fid);
+
+ tgt = lmv_tgt(lmv, op_data->op_mds);
if (!tgt)
RETURN(-ENODEV);
+ if (!tgt->ltd_active || !tgt->ltd_exp)
+ RETURN(-ENODEV);
+
/*
* New seq alloc and FLD setup should be atomic. Otherwise we may find
* on server that seq in new allocated fid is not yet known.
*/
mutex_lock(&tgt->ltd_fid_mutex);
-
- if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
- GOTO(out, rc = -ENODEV);
-
- /*
- * Asking underlying tgt layer to allocate new fid.
- */
rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
+ mutex_unlock(&tgt->ltd_fid_mutex);
if (rc > 0) {
LASSERT(fid_is_sane(fid));
rc = 0;
}
- EXIT;
-out:
- mutex_unlock(&tgt->ltd_fid_mutex);
- return rc;
-}
-
-int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
- struct lu_fid *fid, struct md_op_data *op_data)
-{
- struct obd_device *obd = class_exp2obd(exp);
- struct lmv_obd *lmv = &obd->u.lmv;
- u32 mds;
- int rc;
-
- ENTRY;
-
- LASSERT(op_data != NULL);
- LASSERT(fid != NULL);
-
- mds = lmv_placement_policy(obd, op_data);
-
- rc = __lmv_fid_alloc(lmv, fid, mds);
- if (rc)
- CERROR("Can't alloc new fid, rc %d\n", rc);
-
RETURN(rc);
}
{
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_desc *desc;
- struct lnet_process_id lnet_id;
+ struct lnet_processid lnet_id;
int i = 0;
int rc;
RETURN(-EINVAL);
}
- obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
- lmv->desc.ld_tgt_count = 0;
- lmv->desc.ld_active_tgt_count = 0;
- lmv->desc.ld_qos_maxage = LMV_DESC_QOS_MAXAGE_DEFAULT;
+ obd_str2uuid(&lmv->lmv_mdt_descs.ltd_lmv_desc.ld_uuid,
+ desc->ld_uuid.uuid);
+ lmv->lmv_mdt_descs.ltd_lmv_desc.ld_tgt_count = 0;
+ lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count = 0;
+ lmv->lmv_mdt_descs.ltd_lmv_desc.ld_qos_maxage =
+ LMV_DESC_QOS_MAXAGE_DEFAULT;
lmv->max_def_easize = 0;
lmv->max_easize = 0;
spin_lock_init(&lmv->lmv_lock);
- /* Set up allocation policy (QoS and RR) */
- INIT_LIST_HEAD(&lmv->lmv_qos.lq_svr_list);
- init_rwsem(&lmv->lmv_qos.lq_rw_sem);
- lmv->lmv_qos.lq_dirty = 1;
- lmv->lmv_qos.lq_reset = 1;
- /* Default priority is toward free space balance */
- lmv->lmv_qos.lq_prio_free = 232;
- /* Default threshold for rr (roughly 17%) */
- lmv->lmv_qos.lq_threshold_rr = 43;
-
- lu_qos_rr_init(&lmv->lmv_qos.lq_rr);
-
/*
* initialize rr_index to lower 32bit of netid, so that client
* can distribute subdirs evenly from the beginning.
*/
while (LNetGetId(i++, &lnet_id) != -ENOENT) {
- if (LNET_NETTYP(LNET_NIDNET(lnet_id.nid)) != LOLND) {
- lmv->lmv_qos_rr_index = (u32)lnet_id.nid;
+ if (!nid_is_lo0(&lnet_id.nid)) {
+ lmv->lmv_qos_rr_index = ntohl(lnet_id.nid.nid_addr[0]);
break;
}
}
if (rc)
CERROR("Can't init FLD, err %d\n", rc);
- rc = lu_tgt_descs_init(&lmv->lmv_mdt_descs);
+ rc = lu_tgt_descs_init(&lmv->lmv_mdt_descs, true);
if (rc)
CWARN("%s: error initialize target table: rc = %d\n",
obd->obd_name, rc);
ENTRY;
fld_client_fini(&lmv->lmv_fld);
+ fld_client_debugfs_fini(&lmv->lmv_fld);
+
+ lprocfs_obd_cleanup(obd);
+ lprocfs_free_md_stats(obd);
+
lmv_foreach_tgt_safe(lmv, tgt, tmp)
lmv_del_target(lmv, tgt);
lu_tgt_descs_fini(&lmv->lmv_mdt_descs);
if (flags & OBD_STATFS_FOR_MDT0)
return 0;
- if (lmv->lmv_statfs_start || lmv->desc.ld_tgt_count == 1)
+ if (lmv->lmv_statfs_start || lmv->lmv_mdt_count == 1)
return lmv->lmv_statfs_start;
/* choose initial MDT for this client */
for (i = 0;; i++) {
- struct lnet_process_id lnet_id;
+ struct lnet_processid lnet_id;
if (LNetGetId(i, &lnet_id) == -ENOENT)
break;
- if (LNET_NETTYP(LNET_NIDNET(lnet_id.nid)) != LOLND) {
+ if (!nid_is_lo0(&lnet_id.nid)) {
/* We dont need a full 64-bit modulus, just enough
* to distribute the requests across MDTs evenly.
*/
- lmv->lmv_statfs_start =
- (u32)lnet_id.nid % lmv->desc.ld_tgt_count;
+ lmv->lmv_statfs_start = nidhash(&lnet_id.nid) %
+ lmv->lmv_mdt_count;
break;
}
}
__u32 i;
__u32 idx;
int rc = 0;
+ int err = 0;
ENTRY;
/* distribute statfs among MDTs */
idx = lmv_select_statfs_mdt(lmv, flags);
- for (i = 0; i < lmv->desc.ld_tgt_count; i++, idx++) {
- idx = idx % lmv->desc.ld_tgt_count;
+ for (i = 0; i < lmv->lmv_mdt_descs.ltd_tgts_size; i++, idx++) {
+ idx = idx % lmv->lmv_mdt_descs.ltd_tgts_size;
tgt = lmv_tgt(lmv, idx);
if (!tgt || !tgt->ltd_exp)
continue;
- rc = obd_statfs(env, tgt->ltd_exp, temp, max_age, flags);
+ rc = obd_statfs(env, tgt->ltd_exp, temp, max_age,
+ flags | OBD_STATFS_NESTED);
if (rc) {
CERROR("%s: can't stat MDS #%d: rc = %d\n",
tgt->ltd_exp->exp_obd->obd_name, i, rc);
+ err = rc;
+ /* Try another MDT */
+ if (flags & OBD_STATFS_SUM)
+ continue;
GOTO(out_free_temp, rc);
}
- if (temp->os_state & OS_STATE_SUM ||
+ if (temp->os_state & OS_STATFS_SUM ||
flags == OBD_STATFS_FOR_MDT0) {
/* reset to the last aggregated values
* and don't sum with non-aggrated data */
* clients can be mounted as long as MDT0 is in
* service */
*osfs = *temp;
- break;
+ GOTO(out_free_temp, rc);
}
if (i == 0) {
osfs->os_granted += temp->os_granted;
}
}
-
- EXIT;
+ /* There is no stats from some MDTs, data incomplete */
+ if (err)
+ rc = err;
out_free_temp:
OBD_FREE(temp, sizeof(*temp));
- return rc;
+ RETURN(rc);
}
static int lmv_statfs_update(void *cookie, int rc)
tgt->ltd_statfs = *osfs;
tgt->ltd_statfs_age = ktime_get_seconds();
spin_unlock(&lmv->lmv_lock);
- lmv->lmv_qos.lq_dirty = 1;
+ set_bit(LQ_DIRTY, &lmv->lmv_qos.lq_flags);
}
return rc;
int rc;
if (ktime_get_seconds() - tgt->ltd_statfs_age <
- obd->u.lmv.desc.ld_qos_maxage)
+ obd->u.lmv.lmv_mdt_descs.ltd_lmv_desc.ld_qos_maxage)
return 0;
rc = obd_statfs_async(tgt->ltd_exp, &oinfo, 0, NULL);
RETURN(rc);
}
+static struct lu_tgt_desc *lmv_locate_tgt_qos(struct lmv_obd *lmv, __u32 mdt,
+ unsigned short dir_depth)
+{
+ struct lu_tgt_desc *tgt, *cur = NULL;
+ __u64 total_avail = 0;
+ __u64 total_weight = 0;
+ __u64 cur_weight = 0;
+ int total_usable = 0;
+ __u64 rand;
+ int rc;
+
+ ENTRY;
+
+ if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
+ RETURN(ERR_PTR(-EAGAIN));
+
+ down_write(&lmv->lmv_qos.lq_rw_sem);
+
+ if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
+ GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
+
+ rc = ltd_qos_penalties_calc(&lmv->lmv_mdt_descs);
+ if (rc)
+ GOTO(unlock, tgt = ERR_PTR(rc));
+
+ lmv_foreach_tgt(lmv, tgt) {
+ if (!tgt->ltd_exp || !tgt->ltd_active) {
+ tgt->ltd_qos.ltq_usable = 0;
+ continue;
+ }
+
+ tgt->ltd_qos.ltq_usable = 1;
+ lu_tgt_qos_weight_calc(tgt);
+ if (tgt->ltd_index == mdt)
+ cur = tgt;
+ total_avail += tgt->ltd_qos.ltq_avail;
+ total_weight += tgt->ltd_qos.ltq_weight;
+ total_usable++;
+ }
+
+ /* if current MDT has above-average space, within range of the QOS
+ * threshold, stay on the same MDT to avoid creating needless remote
+ * MDT directories. It's more likely for low level directories
+ * "16 / (dir_depth + 10)" is the factor to make it more unlikely for
+ * top level directories, while more likely for low levels.
+ */
+ rand = total_avail * 16 / (total_usable * (dir_depth + 10));
+ if (cur && cur->ltd_qos.ltq_avail >= rand) {
+ tgt = cur;
+ GOTO(unlock, tgt);
+ }
+
+ rand = lu_prandom_u64_max(total_weight);
+
+ lmv_foreach_connected_tgt(lmv, tgt) {
+ if (!tgt->ltd_qos.ltq_usable)
+ continue;
+
+ cur_weight += tgt->ltd_qos.ltq_weight;
+ if (cur_weight < rand)
+ continue;
+
+ ltd_qos_update(&lmv->lmv_mdt_descs, tgt, &total_weight);
+ GOTO(unlock, tgt);
+ }
+
+ /* no proper target found */
+ GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
+unlock:
+ up_write(&lmv->lmv_qos.lq_rw_sem);
+
+ return tgt;
+}
+
+static struct lu_tgt_desc *lmv_locate_tgt_rr(struct lmv_obd *lmv)
+{
+ struct lu_tgt_desc *tgt;
+ int i;
+ int index;
+
+ ENTRY;
+
+ spin_lock(&lmv->lmv_lock);
+ for (i = 0; i < lmv->lmv_mdt_descs.ltd_tgts_size; i++) {
+ index = (i + lmv->lmv_qos_rr_index) %
+ lmv->lmv_mdt_descs.ltd_tgts_size;
+ tgt = lmv_tgt(lmv, index);
+ if (!tgt || !tgt->ltd_exp || !tgt->ltd_active)
+ continue;
+
+ lmv->lmv_qos_rr_index = (tgt->ltd_index + 1) %
+ lmv->lmv_mdt_descs.ltd_tgts_size;
+ spin_unlock(&lmv->lmv_lock);
+
+ RETURN(tgt);
+ }
+ spin_unlock(&lmv->lmv_lock);
+
+ RETURN(ERR_PTR(-ENODEV));
+}
+
+/* locate MDT which is less full (avoid the most full MDT) */
+static struct lu_tgt_desc *lmv_locate_tgt_lf(struct lmv_obd *lmv)
+{
+ struct lu_tgt_desc *min = NULL;
+ struct lu_tgt_desc *tgt;
+ __u64 avail = 0;
+ __u64 rand;
+
+ ENTRY;
+
+ if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
+ RETURN(ERR_PTR(-EAGAIN));
+
+ down_write(&lmv->lmv_qos.lq_rw_sem);
+
+ if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
+ GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
+
+ lmv_foreach_tgt(lmv, tgt) {
+ if (!tgt->ltd_exp || !tgt->ltd_active) {
+ tgt->ltd_qos.ltq_usable = 0;
+ continue;
+ }
+
+ tgt->ltd_qos.ltq_usable = 1;
+ lu_tgt_qos_weight_calc(tgt);
+ avail += tgt->ltd_qos.ltq_avail;
+ if (!min || min->ltd_qos.ltq_avail > tgt->ltd_qos.ltq_avail)
+ min = tgt;
+ }
+
+ /* avoid the most full MDT */
+ if (min)
+ avail -= min->ltd_qos.ltq_avail;
+
+ rand = lu_prandom_u64_max(avail);
+ avail = 0;
+ lmv_foreach_connected_tgt(lmv, tgt) {
+ if (!tgt->ltd_qos.ltq_usable)
+ continue;
+
+ if (tgt == min)
+ continue;
+
+ avail += tgt->ltd_qos.ltq_avail;
+ if (avail < rand)
+ continue;
+
+ GOTO(unlock, tgt);
+ }
+
+ /* no proper target found */
+ GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
+unlock:
+ up_write(&lmv->lmv_qos.lq_rw_sem);
+
+ RETURN(tgt);
+}
+
+/* locate MDT by file name, for striped directory, the file name hash decides
+ * which stripe its dirent is stored.
+ */
static struct lmv_tgt_desc *
lmv_locate_tgt_by_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
const char *name, int namelen, struct lu_fid *fid,
- __u32 *mds, bool post_migrate)
+ __u32 *mds, bool new_layout)
{
struct lmv_tgt_desc *tgt;
const struct lmv_oinfo *oinfo;
return ERR_PTR(-EBADF);
oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
} else {
- oinfo = lsm_name_to_stripe_info(lsm, name, namelen,
- post_migrate);
+ oinfo = lsm_name_to_stripe_info(lsm, name, namelen, new_layout);
if (IS_ERR(oinfo))
return ERR_CAST(oinfo);
}
+ /* check stripe FID is sane */
+ if (!fid_is_sane(&oinfo->lmo_fid))
+ return ERR_PTR(-ENODEV);
+
*fid = oinfo->lmo_fid;
*mds = oinfo->lmo_mds;
tgt = lmv_tgt(lmv, oinfo->lmo_mds);
*
* For striped directory, it will locate the stripe by name hash, if hash_type
* is unknown, it will return the stripe specified by 'op_data->op_stripe_index'
- * which is set outside, and if dir is migrating, 'op_data->op_post_migrate'
+ * which is set outside, and if dir is migrating, 'op_data->op_new_layout'
* indicates whether old or new layout is used to locate.
*
- * For plain direcotry, normally it will locate MDT by FID, but if this
- * directory has default LMV, and its hash type is "space", locate MDT with QoS.
+ * For plain direcotry, it just locate the MDT of op_data->op_fid1.
*
- * \param[in] lmv LMV device
- * \param[in] op_data client MD stack parameters, name, namelen
- * mds_num etc.
+ * \param[in] lmv LMV device
+ * \param[in/out] op_data client MD stack parameters, name, namelen etc,
+ * op_mds and op_fid1 will be updated if op_mea1
+ * indicates fid1 represents a striped directory.
*
* retval pointer to the lmv_tgt_desc if succeed.
* ERR_PTR(errno) if failed.
* index if the file under striped dir is being restored, see
* ct_restore(). */
if (op_data->op_bias & MDS_CREATE_VOLATILE &&
- (int)op_data->op_mds != -1) {
+ op_data->op_mds != LMV_OFFSET_DEFAULT) {
tgt = lmv_tgt(lmv, op_data->op_mds);
if (!tgt)
return ERR_PTR(-ENODEV);
op_data->op_mds = oinfo->lmo_mds;
tgt = lmv_tgt(lmv, oinfo->lmo_mds);
if (!tgt)
- tgt = ERR_PTR(-ENODEV);
- } else if (op_data->op_code == LUSTRE_OPC_MKDIR &&
- lmv_dir_qos_mkdir(op_data->op_default_mea1) &&
- !lmv_dir_striped(lsm)) {
- tgt = lmv_locate_tgt_qos(lmv, &op_data->op_mds);
- if (tgt == ERR_PTR(-EAGAIN))
- tgt = lmv_locate_tgt_rr(lmv, &op_data->op_mds);
- /*
- * only update statfs when mkdir under dir with "space" hash,
- * this means the cached statfs may be stale, and current mkdir
- * may not follow QoS accurately, but it's not serious, and it
- * avoids periodic statfs when client doesn't mkdir under
- * "space" hashed directories.
- *
- * TODO: after MDT support QoS object allocation, also update
- * statfs for 'lfs mkdir -i -1 ...", currently it's done in user
- * space.
- */
- if (!IS_ERR(tgt)) {
- struct obd_device *obd;
-
- obd = container_of(lmv, struct obd_device, u.lmv);
- lmv_statfs_check_update(obd, tgt);
- }
+ return ERR_PTR(-ENODEV);
} else {
tgt = lmv_locate_tgt_by_name(lmv, op_data->op_mea1,
op_data->op_name, op_data->op_namelen,
&op_data->op_fid1, &op_data->op_mds,
- op_data->op_post_migrate);
+ op_data->op_new_layout);
}
return tgt;
int rc;
LASSERT(op_data->op_name);
- if (lmv_dir_migrating(op_data->op_mea2)) {
+ if (lmv_dir_layout_changing(op_data->op_mea2)) {
struct lu_fid fid1 = op_data->op_fid1;
struct lmv_stripe_md *lsm1 = op_data->op_mea1;
struct ptlrpc_request *request = NULL;
&op_data->op_mds, true);
}
+int lmv_old_layout_lookup(struct lmv_obd *lmv, struct md_op_data *op_data)
+{
+ struct lu_tgt_desc *tgt;
+ struct ptlrpc_request *request;
+ int rc;
+
+ LASSERT(lmv_dir_layout_changing(op_data->op_mea1));
+ LASSERT(!op_data->op_new_layout);
+
+ tgt = lmv_locate_tgt(lmv, op_data);
+ if (IS_ERR(tgt))
+ return PTR_ERR(tgt);
+
+ rc = md_getattr_name(tgt->ltd_exp, op_data, &request);
+ if (!rc) {
+ ptlrpc_req_finished(request);
+ return -EEXIST;
+ }
+
+ return rc;
+}
+
+/* mkdir by QoS upon 'lfs mkdir -i -1'.
+ *
+ * NB, mkdir by QoS only if parent is not striped, this is to avoid remote
+ * directories under striped directory.
+ */
+static inline bool lmv_op_user_qos_mkdir(const struct md_op_data *op_data)
+{
+ const struct lmv_user_md *lum = op_data->op_data;
+
+ if (op_data->op_code != LUSTRE_OPC_MKDIR)
+ return false;
+
+ if (lmv_dir_striped(op_data->op_mea1))
+ return false;
+
+ return (op_data->op_cli_flags & CLI_SET_MEA) && lum &&
+ le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC &&
+ le32_to_cpu(lum->lum_stripe_offset) == LMV_OFFSET_DEFAULT;
+}
+
+/* mkdir by QoS if either ROOT or parent default LMV is space balanced. */
+static inline bool lmv_op_default_qos_mkdir(const struct md_op_data *op_data)
+{
+ const struct lmv_stripe_md *lsm = op_data->op_default_mea1;
+
+ if (op_data->op_code != LUSTRE_OPC_MKDIR)
+ return false;
+
+ if (lmv_dir_striped(op_data->op_mea1))
+ return false;
+
+ return (op_data->op_flags & MF_QOS_MKDIR) ||
+ (lsm && lsm->lsm_md_master_mdt_index == LMV_OFFSET_DEFAULT);
+}
+
+/* if parent default LMV is space balanced, and
+ * 1. max_inherit_rr is set
+ * 2. or parent is ROOT
+ * mkdir roundrobin. Or if parent doesn't have default LMV, while ROOT default
+ * LMV requests roundrobin mkdir, do the same.
+ * NB, this needs to check server is balanced, which is done by caller.
+ */
+static inline bool lmv_op_default_rr_mkdir(const struct md_op_data *op_data)
+{
+ const struct lmv_stripe_md *lsm = op_data->op_default_mea1;
+
+ if (!lmv_op_default_qos_mkdir(op_data))
+ return false;
+
+ return (op_data->op_flags & MF_RR_MKDIR) ||
+ (lsm && lsm->lsm_md_max_inherit_rr != LMV_INHERIT_RR_NONE) ||
+ fid_is_root(&op_data->op_fid1);
+}
+
+/* 'lfs mkdir -i <specific_MDT>' */
+static inline bool lmv_op_user_specific_mkdir(const struct md_op_data *op_data)
+{
+ const struct lmv_user_md *lum = op_data->op_data;
+
+ return op_data->op_code == LUSTRE_OPC_MKDIR &&
+ op_data->op_cli_flags & CLI_SET_MEA && lum &&
+ (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC ||
+ le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC) &&
+ le32_to_cpu(lum->lum_stripe_offset) != LMV_OFFSET_DEFAULT;
+}
+
+/* parent default LMV master_mdt_index is not -1. */
+static inline bool
+lmv_op_default_specific_mkdir(const struct md_op_data *op_data)
+{
+ return op_data->op_code == LUSTRE_OPC_MKDIR &&
+ op_data->op_default_mea1 &&
+ op_data->op_default_mea1->lsm_md_master_mdt_index !=
+ LMV_OFFSET_DEFAULT;
+}
+
+/* locate MDT by space usage */
+static struct lu_tgt_desc *lmv_locate_tgt_by_space(struct lmv_obd *lmv,
+ struct md_op_data *op_data,
+ struct lmv_tgt_desc *tgt)
+{
+ struct lmv_tgt_desc *tmp = tgt;
+
+ tgt = lmv_locate_tgt_qos(lmv, op_data->op_mds, op_data->op_dir_depth);
+ if (tgt == ERR_PTR(-EAGAIN)) {
+ if (ltd_qos_is_balanced(&lmv->lmv_mdt_descs) &&
+ !lmv_op_default_rr_mkdir(op_data) &&
+ !lmv_op_user_qos_mkdir(op_data))
+ /* if not necessary, don't create remote directory. */
+ tgt = tmp;
+ else
+ tgt = lmv_locate_tgt_rr(lmv);
+ }
+
+ /*
+ * only update statfs after QoS mkdir, this means the cached statfs may
+ * be stale, and current mkdir may not follow QoS accurately, but it's
+ * not serious, and avoids periodic statfs when client doesn't mkdir by
+ * QoS.
+ */
+ if (!IS_ERR(tgt)) {
+ op_data->op_mds = tgt->ltd_index;
+ lmv_statfs_check_update(lmv2obd_dev(lmv), tgt);
+ }
+
+ return tgt;
+}
+
int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
const void *data, size_t datalen, umode_t mode, uid_t uid,
- gid_t gid, cfs_cap_t cap_effective, __u64 rdev,
+ gid_t gid, kernel_cap_t cap_effective, __u64 rdev,
struct ptlrpc_request **request)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
+ struct mdt_body *repbody;
int rc;
ENTRY;
- if (!lmv->desc.ld_active_tgt_count)
+ if (!lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count)
RETURN(-EIO);
if (lmv_dir_bad_hash(op_data->op_mea1))
RETURN(-EBADF);
- if (lmv_dir_migrating(op_data->op_mea1)) {
+ if (lmv_dir_layout_changing(op_data->op_mea1)) {
/*
* if parent is migrating, create() needs to lookup existing
- * name, to avoid creating new file under old layout of
- * migrating directory, check old layout here.
+ * name in both old and new layout, check old layout on client.
*/
- tgt = lmv_locate_tgt(lmv, op_data);
- if (IS_ERR(tgt))
- RETURN(PTR_ERR(tgt));
-
- rc = md_getattr_name(tgt->ltd_exp, op_data, request);
- if (!rc) {
- ptlrpc_req_finished(*request);
- *request = NULL;
- RETURN(-EEXIST);
- }
-
+ rc = lmv_old_layout_lookup(lmv, op_data);
if (rc != -ENOENT)
RETURN(rc);
- op_data->op_post_migrate = true;
+ op_data->op_new_layout = true;
}
tgt = lmv_locate_tgt(lmv, op_data);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
- CDEBUG(D_INODE, "CREATE name '%.*s' on "DFID" -> mds #%x\n",
- (int)op_data->op_namelen, op_data->op_name,
- PFID(&op_data->op_fid1), op_data->op_mds);
-
- rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
- if (rc)
- RETURN(rc);
+ /* the order to apply policy in mkdir:
+ * 1. is "lfs mkdir -i N"? mkdir on MDT N.
+ * 2. is "lfs mkdir -i -1"? mkdir by space usage.
+ * 3. is starting MDT specified in default LMV? mkdir on MDT N.
+ * 4. is default LMV space balanced? mkdir by space usage.
+ */
+ if (lmv_op_user_specific_mkdir(op_data)) {
+ struct lmv_user_md *lum = op_data->op_data;
- if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) {
- /* Send the create request to the MDT where the object
- * will be located */
- tgt = lmv_fid2tgt(lmv, &op_data->op_fid2);
+ op_data->op_mds = le32_to_cpu(lum->lum_stripe_offset);
+ tgt = lmv_tgt(lmv, op_data->op_mds);
+ if (!tgt)
+ RETURN(-ENODEV);
+ } else if (lmv_op_user_qos_mkdir(op_data)) {
+ tgt = lmv_locate_tgt_by_space(lmv, op_data, tgt);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+ } else if (lmv_op_default_specific_mkdir(op_data)) {
+ op_data->op_mds =
+ op_data->op_default_mea1->lsm_md_master_mdt_index;
+ tgt = lmv_tgt(lmv, op_data->op_mds);
+ if (!tgt)
+ RETURN(-ENODEV);
+ } else if (lmv_op_default_qos_mkdir(op_data)) {
+ tgt = lmv_locate_tgt_by_space(lmv, op_data, tgt);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
-
- op_data->op_mds = tgt->ltd_index;
}
- CDEBUG(D_INODE, "CREATE obj "DFID" -> mds #%x\n",
- PFID(&op_data->op_fid2), op_data->op_mds);
+retry:
+ rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
+ if (rc)
+ RETURN(rc);
+
+ CDEBUG(D_INODE, "CREATE name '%.*s' "DFID" on "DFID" -> mds #%x\n",
+ (int)op_data->op_namelen, op_data->op_name,
+ PFID(&op_data->op_fid2), PFID(&op_data->op_fid1),
+ op_data->op_mds);
op_data->op_flags |= MF_MDC_CANCEL_FID1;
rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
RETURN(rc);
CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
}
- RETURN(rc);
+
+ /* dir restripe needs to send to MDT where dir is located */
+ if (rc != -EREMOTE ||
+ !(exp_connect_flags2(exp) & OBD_CONNECT2_CRUSH))
+ RETURN(rc);
+
+ repbody = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
+ if (repbody == NULL)
+ RETURN(-EPROTO);
+
+ /* Not cross-ref case, just get out of here. */
+ if (likely(!(repbody->mbo_valid & OBD_MD_MDS)))
+ RETURN(rc);
+
+ op_data->op_fid2 = repbody->mbo_fid1;
+ ptlrpc_req_finished(*request);
+ *request = NULL;
+
+ tgt = lmv_fid2tgt(lmv, &op_data->op_fid2);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ op_data->op_mds = tgt->ltd_index;
+ goto retry;
}
static int
ENTRY;
retry:
- tgt = lmv_locate_tgt(lmv, op_data);
+ if (op_data->op_namelen == 2 &&
+ op_data->op_name[0] == '.' && op_data->op_name[1] == '.')
+ tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
+ else
+ tgt = lmv_locate_tgt(lmv, op_data);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
- op_data->op_cap = cfs_curproc_cap_pack();
+ op_data->op_cap = current_cap();
tgt = lmv_locate_tgt2(lmv, op_data);
if (IS_ERR(tgt))
RETURN(rc);
}
+/* migrate the top directory */
+static inline bool lmv_op_topdir_migrate(const struct md_op_data *op_data)
+{
+ if (!S_ISDIR(op_data->op_mode))
+ return false;
+
+ if (lmv_dir_layout_changing(op_data->op_mea1))
+ return false;
+
+ return true;
+}
+
+/* migrate top dir to specific MDTs */
+static inline bool lmv_topdir_specific_migrate(const struct md_op_data *op_data)
+{
+ const struct lmv_user_md *lum = op_data->op_data;
+
+ if (!lmv_op_topdir_migrate(op_data))
+ return false;
+
+ return le32_to_cpu(lum->lum_stripe_offset) != LMV_OFFSET_DEFAULT;
+}
+
+/* migrate top dir in QoS mode if user issued "lfs migrate -m -1..." */
+static inline bool lmv_topdir_qos_migrate(const struct md_op_data *op_data)
+{
+ const struct lmv_user_md *lum = op_data->op_data;
+
+ if (!lmv_op_topdir_migrate(op_data))
+ return false;
+
+ return le32_to_cpu(lum->lum_stripe_offset) == LMV_OFFSET_DEFAULT;
+}
+
+static inline bool lmv_subdir_specific_migrate(const struct md_op_data *op_data)
+{
+ const struct lmv_user_md *lum = op_data->op_data;
+
+ if (!S_ISDIR(op_data->op_mode))
+ return false;
+
+ if (!lmv_dir_layout_changing(op_data->op_mea1))
+ return false;
+
+ return le32_to_cpu(lum->lum_stripe_offset) != LMV_OFFSET_DEFAULT;
+}
+
static int lmv_migrate(struct obd_export *exp, struct md_op_data *op_data,
const char *name, size_t namelen,
struct ptlrpc_request **request)
struct lmv_tgt_desc *tp_tgt = NULL;
struct lmv_tgt_desc *child_tgt;
struct lmv_tgt_desc *tgt;
- struct lu_fid target_fid;
+ struct lu_fid target_fid = { 0 };
int rc;
ENTRY;
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
- op_data->op_cap = cfs_curproc_cap_pack();
+ op_data->op_cap = current_cap();
parent_tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
if (IS_ERR(parent_tgt))
RETURN(PTR_ERR(parent_tgt));
if (lmv_dir_striped(lsm)) {
- __u32 hash_type = lsm->lsm_md_hash_type;
- __u32 stripe_count = lsm->lsm_md_stripe_count;
-
- /*
- * old stripes are appended after new stripes for migrating
- * directory.
- */
- if (lmv_dir_migrating(lsm)) {
- hash_type = lsm->lsm_md_migrate_hash;
- stripe_count -= lsm->lsm_md_migrate_offset;
- }
+ const struct lmv_oinfo *oinfo;
- rc = lmv_name_to_stripe_index(hash_type, stripe_count, name,
- namelen);
- if (rc < 0)
- RETURN(rc);
-
- if (lmv_dir_migrating(lsm))
- rc += lsm->lsm_md_migrate_offset;
+ oinfo = lsm_name_to_stripe_info(lsm, name, namelen, false);
+ if (IS_ERR(oinfo))
+ RETURN(PTR_ERR(oinfo));
- /* save it in fid4 temporarily for early cancel */
- op_data->op_fid4 = lsm->lsm_md_oinfo[rc].lmo_fid;
- sp_tgt = lmv_tgt(lmv, lsm->lsm_md_oinfo[rc].lmo_mds);
+ /* save source stripe FID in fid4 temporarily for ELC */
+ op_data->op_fid4 = oinfo->lmo_fid;
+ sp_tgt = lmv_tgt(lmv, oinfo->lmo_mds);
if (!sp_tgt)
RETURN(-ENODEV);
* if parent is being migrated too, fill op_fid2 with target
* stripe fid, otherwise the target stripe is not created yet.
*/
- if (lmv_dir_migrating(lsm)) {
- hash_type = lsm->lsm_md_hash_type &
- ~LMV_HASH_FLAG_MIGRATION;
- stripe_count = lsm->lsm_md_migrate_offset;
-
- rc = lmv_name_to_stripe_index(hash_type, stripe_count,
- name, namelen);
- if (rc < 0)
- RETURN(rc);
-
- op_data->op_fid2 = lsm->lsm_md_oinfo[rc].lmo_fid;
- tp_tgt = lmv_tgt(lmv, lsm->lsm_md_oinfo[rc].lmo_mds);
+ if (lmv_dir_layout_changing(lsm)) {
+ oinfo = lsm_name_to_stripe_info(lsm, name, namelen,
+ true);
+ if (IS_ERR(oinfo))
+ RETURN(PTR_ERR(oinfo));
+
+ op_data->op_fid2 = oinfo->lmo_fid;
+ tp_tgt = lmv_tgt(lmv, oinfo->lmo_mds);
if (!tp_tgt)
RETURN(-ENODEV);
+
+ /* parent unchanged and update namespace only */
+ if (lu_fid_eq(&op_data->op_fid4, &op_data->op_fid2) &&
+ op_data->op_bias & MDS_MIGRATE_NSONLY)
+ RETURN(-EALREADY);
}
} else {
sp_tgt = parent_tgt;
if (IS_ERR(child_tgt))
RETURN(PTR_ERR(child_tgt));
- if (!S_ISDIR(op_data->op_mode) && tp_tgt)
- rc = __lmv_fid_alloc(lmv, &target_fid, tp_tgt->ltd_index);
- else
- rc = lmv_fid_alloc(NULL, exp, &target_fid, op_data);
+ if (lmv_topdir_specific_migrate(op_data)) {
+ struct lmv_user_md *lum = op_data->op_data;
+
+ op_data->op_mds = le32_to_cpu(lum->lum_stripe_offset);
+ } else if (lmv_topdir_qos_migrate(op_data)) {
+ tgt = lmv_locate_tgt_lf(lmv);
+ if (tgt == ERR_PTR(-EAGAIN))
+ tgt = lmv_locate_tgt_rr(lmv);
+ if (IS_ERR(tgt))
+ RETURN(PTR_ERR(tgt));
+
+ op_data->op_mds = tgt->ltd_index;
+ } else if (lmv_subdir_specific_migrate(op_data)) {
+ struct lmv_user_md *lum = op_data->op_data;
+ __u32 i;
+
+ LASSERT(tp_tgt);
+ if (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC) {
+ /* adjust MDTs in lum, since subdir is located on where
+ * its parent stripe is, not the first specified MDT.
+ */
+ for (i = 0; i < le32_to_cpu(lum->lum_stripe_count);
+ i++) {
+ if (le32_to_cpu(lum->lum_objects[i].lum_mds) ==
+ tp_tgt->ltd_index)
+ break;
+ }
+
+ if (i == le32_to_cpu(lum->lum_stripe_count))
+ RETURN(-ENODEV);
+
+ lum->lum_objects[i].lum_mds =
+ lum->lum_objects[0].lum_mds;
+ lum->lum_objects[0].lum_mds =
+ cpu_to_le32(tp_tgt->ltd_index);
+ }
+ /* NB, the above adjusts subdir migration for command like
+ * "lfs migrate -m 0,1,2 ...", but for migration like
+ * "lfs migrate -m 0 -c 2 ...", the top dir is migrated to MDT0
+ * and MDT1, however its subdir may be migrated to MDT1 and MDT2
+ */
+
+ lum->lum_stripe_offset = cpu_to_le32(tp_tgt->ltd_index);
+ op_data->op_mds = tp_tgt->ltd_index;
+ } else if (tp_tgt) {
+ op_data->op_mds = tp_tgt->ltd_index;
+ } else {
+ op_data->op_mds = sp_tgt->ltd_index;
+ }
+
+ rc = lmv_fid_alloc(NULL, exp, &target_fid, op_data);
if (rc)
RETURN(rc);
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
- op_data->op_cap = cfs_curproc_cap_pack();
+ op_data->op_cap = current_cap();
op_data->op_name = new;
op_data->op_namelen = newlen;
struct lmv_dir_ctxt {
struct lmv_obd *ldc_lmv;
struct md_op_data *ldc_op_data;
- struct md_callback *ldc_cb_op;
+ struct md_readdir_info *ldc_mrinfo;
__u64 ldc_hash;
int ldc_count;
struct stripe_dirent ldc_stripes[0];
op_data->op_fid2 = oinfo->lmo_fid;
op_data->op_data = oinfo->lmo_root;
- rc = md_read_page(tgt->ltd_exp, op_data, ctxt->ldc_cb_op, hash,
+ rc = md_read_page(tgt->ltd_exp, op_data, ctxt->ldc_mrinfo, hash,
&stripe->sd_page);
op_data->op_fid1 = fid;
LASSERT(!ent);
/* treat error as eof, so dir can be partially accessed */
stripe->sd_eof = true;
+ ctxt->ldc_mrinfo->mr_partial_readdir_rc = rc;
LCONSOLE_WARN("dir "DFID" stripe %d readdir failed: %d, "
"directory is partially accessed!\n",
PFID(&ctxt->ldc_op_data->op_fid1), stripe_index,
*
* \param[in] exp obd export refer to LMV
* \param[in] op_data hold those MD parameters of read_entry
- * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry
+ * \param[in] mrinfo ldlm callback being used in enqueue in mdc_read_entry,
+ * and partial readdir result will be stored in it.
* \param[in] offset starting hash offset
* \param[out] ppage the page holding the entry. Note: because the entry
* will be accessed in upper layer, so we need hold the
*/
static int lmv_striped_read_page(struct obd_export *exp,
struct md_op_data *op_data,
- struct md_callback *cb_op,
- __u64 offset, struct page **ppage)
+ struct md_readdir_info *mrinfo, __u64 offset,
+ struct page **ppage)
{
struct page *page = NULL;
struct lu_dirpage *dp;
GOTO(free_page, rc = -ENOMEM);
ctxt->ldc_lmv = &exp->exp_obd->u.lmv;
ctxt->ldc_op_data = op_data;
- ctxt->ldc_cb_op = cb_op;
+ ctxt->ldc_mrinfo = mrinfo;
ctxt->ldc_hash = offset;
ctxt->ldc_count = stripe_count;
return rc;
}
-int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
- struct md_callback *cb_op, __u64 offset,
- struct page **ppage)
+static int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
+ struct md_readdir_info *mrinfo, __u64 offset,
+ struct page **ppage)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
RETURN(-ENODATA);
if (unlikely(lmv_dir_striped(op_data->op_mea1))) {
- rc = lmv_striped_read_page(exp, op_data, cb_op, offset, ppage);
+ rc = lmv_striped_read_page(exp, op_data, mrinfo, offset, ppage);
RETURN(rc);
}
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
- rc = md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage);
+ rc = md_read_page(tgt->ltd_exp, op_data, mrinfo, offset, ppage);
RETURN(rc);
}
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
- op_data->op_cap = cfs_curproc_cap_pack();
+ op_data->op_cap = current_cap();
retry:
parent_tgt = lmv_locate_tgt(lmv, op_data);
{
ENTRY;
libcfs_kkuc_group_rem(&obd->obd_uuid, 0, KUC_GRP_HSM);
- fld_client_debugfs_fini(&obd->u.lmv.lmv_fld);
- lprocfs_obd_cleanup(obd);
- lprocfs_free_md_stats(obd);
RETURN(0);
}
exp->exp_connect_data = *(struct obd_connect_data *)val;
RETURN(rc);
} else if (KEY_IS(KEY_TGT_COUNT)) {
- *((int *)val) = lmv->desc.ld_tgt_count;
+ *((int *)val) = lmv->lmv_mdt_descs.ltd_tgts_size;
RETURN(0);
}
static int lmv_rmfid(struct obd_export *exp, struct fid_array *fa,
int *__rcs, struct ptlrpc_request_set *_set)
{
- struct obd_device *obddev = class_exp2obd(exp);
+ struct obd_device *obd = class_exp2obd(exp);
struct ptlrpc_request_set *set = _set;
- struct lmv_obd *lmv = &obddev->u.lmv;
- int tgt_count = lmv->desc.ld_tgt_count;
+ struct lmv_obd *lmv = &obd->u.lmv;
+ int tgt_count = lmv->lmv_mdt_count;
struct lu_tgt_desc *tgt;
struct fid_array *fat, **fas = NULL;
int i, rc, **rcs = NULL;
}
/* split FIDs by targets */
- OBD_ALLOC(fas, sizeof(fas) * tgt_count);
+ OBD_ALLOC_PTR_ARRAY(fas, tgt_count);
if (fas == NULL)
GOTO(out, rc = -ENOMEM);
- OBD_ALLOC(rcs, sizeof(int *) * tgt_count);
+ OBD_ALLOC_PTR_ARRAY(rcs, tgt_count);
if (rcs == NULL)
GOTO(out_fas, rc = -ENOMEM);
if (!fas[idx])
GOTO(out, rc = -ENOMEM);
if (!rcs[idx])
- OBD_ALLOC(rcs[idx], sizeof(int) * fa->fa_nr);
+ OBD_ALLOC_PTR_ARRAY(rcs[idx], fa->fa_nr);
if (!rcs[idx])
GOTO(out, rc = -ENOMEM);
OBD_FREE(fas[i], offsetof(struct fid_array,
fa_fids[fa->fa_nr]));
if (rcs && rcs[i])
- OBD_FREE(rcs[i], sizeof(int) * fa->fa_nr);
+ OBD_FREE_PTR_ARRAY(rcs[i], fa->fa_nr);
}
if (rcs)
- OBD_FREE(rcs, sizeof(int *) * tgt_count);
+ OBD_FREE_PTR_ARRAY(rcs, tgt_count);
out_fas:
if (fas)
- OBD_FREE(fas, sizeof(fas) * tgt_count);
+ OBD_FREE_PTR_ARRAY(fas, tgt_count);
RETURN(rc);
}
* \retval 0 on success
* \retval negative negated errno on failure
*/
-int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
- __u32 keylen, void *key, __u32 vallen, void *val,
- struct ptlrpc_request_set *set)
+static int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
+ __u32 keylen, void *key, __u32 vallen, void *val,
+ struct ptlrpc_request_set *set)
{
- struct lmv_tgt_desc *tgt = NULL;
- struct obd_device *obd;
- struct lmv_obd *lmv;
+ struct lmv_tgt_desc *tgt;
+ struct obd_device *obd;
+ struct lmv_obd *lmv;
int rc = 0;
ENTRY;
lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
- if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE))
- lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN;
+ if (CFS_FAIL_CHECK(OBD_FAIL_LMV_UNKNOWN_STRIPE))
+ lsm->lsm_md_hash_type = cfs_fail_val ?: LMV_HASH_TYPE_UNKNOWN;
else
lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
if (cplen >= sizeof(lsm->lsm_md_pool_name))
RETURN(-E2BIG);
- CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %#x "
+ CDEBUG(D_INFO, "unpack lsm count %d/%d, master %d hash_type %#x/%#x "
"layout_version %d\n", lsm->lsm_md_stripe_count,
- lsm->lsm_md_master_mdt_index, lsm->lsm_md_hash_type,
+ lsm->lsm_md_migrate_offset, lsm->lsm_md_master_mdt_index,
+ lsm->lsm_md_hash_type, lsm->lsm_md_migrate_hash,
lsm->lsm_md_layout_version);
stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
* set default value -1, so lmv_locate_tgt() knows this stripe
* target is not initialized.
*/
- lsm->lsm_md_oinfo[i].lmo_mds = (u32)-1;
+ lsm->lsm_md_oinfo[i].lmo_mds = LMV_OFFSET_DEFAULT;
if (!fid_is_sane(&lsm->lsm_md_oinfo[i].lmo_fid))
continue;
lsm->lsm_md_stripe_count = le32_to_cpu(lmu->lum_stripe_count);
lsm->lsm_md_master_mdt_index = le32_to_cpu(lmu->lum_stripe_offset);
lsm->lsm_md_hash_type = le32_to_cpu(lmu->lum_hash_type);
+ lsm->lsm_md_max_inherit = lmu->lum_max_inherit;
+ lsm->lsm_md_max_inherit_rr = lmu->lum_max_inherit_rr;
+ lsm->lsm_md_pool_name[LOV_MAXPOOLNAME] = 0;
return 0;
}
}
if (lmv_dir_striped(lsm)) {
- for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
- if (lsm->lsm_md_oinfo[i].lmo_root)
- iput(lsm->lsm_md_oinfo[i].lmo_root);
- }
+ for (i = 0; i < lsm->lsm_md_stripe_count; i++)
+ iput(lsm->lsm_md_oinfo[i].lmo_root);
lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
} else {
lsm_size = lmv_stripe_md_size(0);
RETURN(rc);
}
-enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
- const struct lu_fid *fid, enum ldlm_type type,
- union ldlm_policy_data *policy,
- enum ldlm_mode mode, struct lustre_handle *lockh)
+static enum ldlm_mode
+lmv_lock_match(struct obd_export *exp, __u64 flags,
+ const struct lu_fid *fid, enum ldlm_type type,
+ union ldlm_policy_data *policy,
+ enum ldlm_mode mode, struct lustre_handle *lockh)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
* since this can be easily found, and only try others if that fails.
*/
for (i = 0, index = lmv_fid2tgt_index(lmv, fid);
- i < lmv->desc.ld_tgt_count;
- i++, index = (index + 1) % lmv->desc.ld_tgt_count) {
+ i < lmv->lmv_mdt_descs.ltd_tgts_size;
+ i++, index = (index + 1) % lmv->lmv_mdt_descs.ltd_tgts_size) {
if (index < 0) {
CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
obd->obd_name, PFID(fid), index);
RETURN(0);
}
-int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
- struct obd_export *dt_exp, struct obd_export *md_exp,
- struct lustre_md *md)
+static int
+lmv_get_lustre_md(struct obd_export *exp, struct req_capsule *pill,
+ struct obd_export *dt_exp, struct obd_export *md_exp,
+ struct lustre_md *md)
{
struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
struct lmv_tgt_desc *tgt = lmv_tgt(lmv, 0);
if (!tgt || !tgt->ltd_exp)
return -EINVAL;
- return md_get_lustre_md(tgt->ltd_exp, req, dt_exp, md_exp, md);
+ return md_get_lustre_md(tgt->ltd_exp, pill, dt_exp, md_exp, md);
}
-int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
+static int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
RETURN(md_free_lustre_md(tgt->ltd_exp, md));
}
-int lmv_set_open_replay_data(struct obd_export *exp,
- struct obd_client_handle *och,
- struct lookup_intent *it)
+static int lmv_set_open_replay_data(struct obd_export *exp,
+ struct obd_client_handle *och,
+ struct lookup_intent *it)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
}
-int lmv_clear_open_replay_data(struct obd_export *exp,
- struct obd_client_handle *och)
+static int lmv_clear_open_replay_data(struct obd_export *exp,
+ struct obd_client_handle *och)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
}
-int lmv_intent_getattr_async(struct obd_export *exp,
- struct md_enqueue_info *minfo)
+static int lmv_intent_getattr_async(struct obd_export *exp,
+ struct md_enqueue_info *minfo)
{
struct md_op_data *op_data = &minfo->mi_data;
struct obd_device *obd = exp->exp_obd;
if (IS_ERR(ptgt))
RETURN(PTR_ERR(ptgt));
- ctgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
+ ctgt = lmv_fid2tgt(lmv, &op_data->op_fid2);
if (IS_ERR(ctgt))
RETURN(PTR_ERR(ctgt));
RETURN(rc);
}
-int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
- struct lu_fid *fid, __u64 *bits)
+static int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
+ struct lu_fid *fid, __u64 *bits)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
RETURN(rc);
}
-int lmv_get_fid_from_lsm(struct obd_export *exp,
- const struct lmv_stripe_md *lsm,
- const char *name, int namelen, struct lu_fid *fid)
+static int lmv_get_fid_from_lsm(struct obd_export *exp,
+ const struct lmv_stripe_md *lsm,
+ const char *name, int namelen,
+ struct lu_fid *fid)
{
const struct lmv_oinfo *oinfo;
- LASSERT(lmv_dir_striped(lsm));
+ if (!lmv_dir_striped(lsm))
+ RETURN(-ESTALE);
oinfo = lsm_name_to_stripe_info(lsm, name, namelen, false);
if (IS_ERR(oinfo))
* process with other slave MDTs. The only exception is Q_GETOQUOTA for which
* we directly fetch data from the slave MDTs.
*/
-int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
- struct obd_quotactl *oqctl)
+static int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
+ struct obd_quotactl *oqctl)
{
struct obd_device *obd = class_exp2obd(exp);
struct lmv_obd *lmv = &obd->u.lmv;
return 0;
}
-struct obd_ops lmv_obd_ops = {
+static const struct obd_ops lmv_obd_ops = {
.o_owner = THIS_MODULE,
.o_setup = lmv_setup,
.o_cleanup = lmv_cleanup,
.o_quotactl = lmv_quotactl
};
-struct md_ops lmv_md_ops = {
+static const struct md_ops lmv_md_ops = {
.m_get_root = lmv_get_root,
.m_null_inode = lmv_null_inode,
.m_close = lmv_close,
static int __init lmv_init(void)
{
- return class_register_type(&lmv_obd_ops, &lmv_md_ops, true, NULL,
+ return class_register_type(&lmv_obd_ops, &lmv_md_ops, true,
LUSTRE_LMV_NAME, NULL);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff