* GPL HEADER END
*/
/*
- * Copyright (c) 2012 Intel, Inc.
+ * Copyright (c) 2012, 2017, Intel Corporation.
* Use is subject to license terms.
*
* Author: Johann Lombardi <johann.lombardi@intel.com>
* Author: Niu Yawei <yawei.niu@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
#define DEBUG_SUBSYSTEM S_LQUOTA
+#include <linux/kthread.h>
+#include <linux/workqueue.h>
+
#include <lustre_dlm.h>
+#include <lustre_swab.h>
#include <obd_class.h>
#include "qmt_internal.h"
+struct workqueue_struct *qmt_lvbo_free_wq;
+
/* intent policy function called from mdt_intent_opc() when the intent is of
* quota type */
int qmt_intent_policy(const struct lu_env *env, struct lu_device *ld,
struct quota_body *repbody;
struct obd_uuid *uuid;
struct lquota_lvb *lvb;
- int rc;
+ struct ldlm_resource *res = (*lockp)->l_resource;
+ struct ldlm_reply *ldlm_rep;
+ int rc, lvb_len;
ENTRY;
req_capsule_extend(&req->rq_pill, &RQF_LDLM_INTENT_QUOTA);
+ req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
+ ldlm_lvbo_size(*lockp));
/* extract quota body and intent opc */
it = req_capsule_client_get(&req->rq_pill, &RMF_LDLM_INTENT);
if (repbody == NULL)
RETURN(err_serious(-EFAULT));
+ ldlm_rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
+ if (ldlm_rep == NULL)
+ RETURN(err_serious(-EFAULT));
+
uuid = &(*lockp)->l_export->exp_client_uuid;
switch (it->opc) {
- case IT_QUOTA_DQACQ:
- /* XXX: to be added in a next patch */
- GOTO(out, -EOPNOTSUPP);
+ case IT_QUOTA_DQACQ: {
+ struct lquota_entry *lqe;
+ struct ldlm_lock *lock;
+ int idx, stype;
+
+ if (res->lr_name.name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] == 0)
+ /* acquire on global lock? something is wrong ... */
+ GOTO(out, rc = -EPROTO);
+
+ /* verify global lock isn't stale */
+ if (!lustre_handle_is_used(&reqbody->qb_glb_lockh))
+ GOTO(out, rc = -ENOLCK);
+
+ lock = ldlm_handle2lock(&reqbody->qb_glb_lockh);
+ if (lock == NULL)
+ GOTO(out, rc = -ENOLCK);
+ LDLM_LOCK_PUT(lock);
+
+ stype = qmt_uuid2idx(uuid, &idx);
+ if (stype < 0)
+ GOTO(out, rc = -EINVAL);
+
+ /* TODO: it seems we don't need to get lqe from
+ * lq_lvb_data anymore ... And do extra get
+ * and put on it */
+ lqe = res->lr_lvb_data;
+ LASSERT(lqe != NULL);
+ lqe_getref(lqe);
+
+ rc = qmt_pool_lqes_lookup(env, qmt, lqe_rtype(lqe), stype,
+ lqe_qtype(lqe), &reqbody->qb_id,
+ NULL, idx);
+ if (rc) {
+ lqe_putref(lqe);
+ GOTO(out, rc);
+ }
+
+ /* acquire quota space */
+ rc = qmt_dqacq0(env, qmt, uuid,
+ reqbody->qb_flags, reqbody->qb_count,
+ reqbody->qb_usage, repbody,
+ qmt_dom(lqe_rtype(lqe), stype) ? -1 : idx);
+ lqe_putref(lqe);
+ qti_lqes_fini(env);
+ if (rc)
+ GOTO(out, rc);
break;
+ }
case IT_QUOTA_CONN:
/* new connection from slave */
+
+ if (res->lr_name.name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] != 0)
+ /* connection on per-ID lock? something is wrong ... */
+ GOTO(out, rc = -EPROTO);
+
rc = qmt_pool_new_conn(env, qmt, &reqbody->qb_fid,
&repbody->qb_slv_fid,
&repbody->qb_slv_ver, uuid);
break;
default:
- CERROR("%s: invalid intent opcode: "LPU64"\n", qmt->qmt_svname,
+ CERROR("%s: invalid intent opcode: %llu\n", qmt->qmt_svname,
it->opc);
- GOTO(out, rc = err_serious(-EINVAL));
+ GOTO(out, rc = -EINVAL);
}
/* on success, pack lvb in reply */
- req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
- ldlm_lvbo_size(*lockp));
lvb = req_capsule_server_get(&req->rq_pill, &RMF_DLM_LVB);
- ldlm_lvbo_fill(*lockp, lvb, ldlm_lvbo_size(*lockp));
- EXIT;
+ lvb_len = ldlm_lvbo_size(*lockp);
+ lvb_len = ldlm_lvbo_fill(*lockp, lvb, &lvb_len);
+ if (lvb_len < 0)
+ GOTO(out, rc = lvb_len);
+
+ req_capsule_shrink(&req->rq_pill, &RMF_DLM_LVB, lvb_len, RCL_SERVER);
out:
- return rc;
+ ldlm_rep->lock_policy_res2 = clear_serious(rc);
+ EXIT;
+ return ELDLM_OK;
}
/*
struct lu_env *env;
struct qmt_thread_info *qti;
struct qmt_device *qmt = lu2qmt_dev(ld);
- int pool_id, pool_type, qtype;
+ int pool_type, qtype;
int rc;
ENTRY;
res->lr_name.name[LUSTRE_RES_ID_SEQ_OFF] != FID_SEQ_QUOTA_GLB)
RETURN(0);
- OBD_ALLOC_PTR(env);
- if (env == NULL)
- RETURN(-ENOMEM);
-
- /* initialize environment */
- rc = lu_env_init(env, LCT_MD_THREAD);
- if (rc) {
- OBD_FREE_PTR(env);
- RETURN(rc);
- }
+ env = lu_env_find();
+ LASSERT(env);
qti = qmt_info(env);
/* extract global index FID and quota identifier */
- fid_extract_quota_resid(&res->lr_name, &qti->qti_fid, &qti->qti_id);
+ fid_extract_from_quota_res(&qti->qti_fid, &qti->qti_id, &res->lr_name);
/* sanity check the global index FID */
- rc = lquota_extract_fid(&qti->qti_fid, &pool_id, &pool_type, &qtype);
+ rc = lquota_extract_fid(&qti->qti_fid, &pool_type, &qtype);
if (rc) {
- CERROR("can't extract pool information from FID "DFID"\n",
+ CERROR("can't extract glb index information from FID "DFID"\n",
PFID(&qti->qti_fid));
GOTO(out, rc);
}
if (res->lr_name.name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] != 0) {
/* no ID quota lock associated with UID/GID 0 or with a seq 0,
* we are thus dealing with an ID lock. */
+ struct qmt_pool_info *pool;
struct lquota_entry *lqe;
+ struct lqe_glbl_data *lgd;
+
+ pool = qmt_pool_lookup_glb(env, qmt, pool_type);
+ if (IS_ERR(pool))
+ GOTO(out, rc = -ENOMEM);
/* Find the quota entry associated with the quota id */
- lqe = qmt_pool_lqe_lookup(env, qmt, pool_id, pool_type, qtype,
- &qti->qti_id);
- if (IS_ERR(lqe))
+ lqe = qmt_pool_lqe_lookup(env, qmt, pool_type, qtype,
+ &qti->qti_id, NULL);
+ if (IS_ERR(lqe)) {
+ qpi_putref(env, pool);
GOTO(out, rc = PTR_ERR(lqe));
+ }
+
+ /* TODO: need something like qmt_extend_lqe_gd that has
+ * to be calledeach time when qpi_slv_nr is incremented */
+ lgd = qmt_alloc_lqe_gd(pool, qtype);
+ if (!lgd) {
+ lqe_putref(lqe);
+ qpi_putref(env, pool);
+ GOTO(out, rc = -ENOMEM);
+ }
+
+ qmt_setup_lqe_gd(env, qmt, lqe, lgd, pool_type);
/* store reference to lqe in lr_lvb_data */
res->lr_lvb_data = lqe;
+ qpi_putref(env, pool);
LQUOTA_DEBUG(lqe, "initialized res lvb");
} else {
struct dt_object *obj;
if (IS_ERR(obj))
GOTO(out, rc = PTR_ERR(obj));
if (!dt_object_exists(obj)) {
- lu_object_put(env, &obj->do_lu);
+ dt_object_put(env, obj);
GOTO(out, rc = -ENOENT);
}
CDEBUG(D_QUOTA, DFID" initialized lvb\n", PFID(&qti->qti_fid));
}
- res->lr_lvb_len = sizeof(struct lquota_lvb);
+ res->lr_lvb_len = sizeof(struct lquota_lvb);
EXIT;
out:
- lu_env_fini(env);
- OBD_FREE_PTR(env);
return rc;
}
+/* clear lge_qunit/edquot_nu flags -
+ * slave recieved new qunit and edquot.
+ *
+ * \retval true if revoke is needed - qunit
+ * for this slave reaches least_qunit
+ */
+static bool qmt_clear_lgeg_arr_nu(struct lquota_entry *lqe, int stype, int idx)
+{
+ unsigned long least = lqe2qpi(lqe)->qpi_least_qunit;
+ bool revoke = false;
+
+ /* There is no array to store lge for the case of DOM.
+ * Ignore it until MDT pools will be ready.
+ */
+ if (!qmt_dom(lqe_rtype(lqe), stype)) {
+ struct lqe_glbl_data *lgd;
+
+ mutex_lock(&lqe->lqe_glbl_data_lock);
+ lgd = lqe->lqe_glbl_data;
+ if (lgd) {
+ int lge_idx = qmt_map_lge_idx(lgd, idx);
+
+ lgd->lqeg_arr[lge_idx].lge_qunit_nu = 0;
+ lgd->lqeg_arr[lge_idx].lge_edquot_nu = 0;
+ /* We shouldn't call revoke for DOM case, it will be
+ * updated at qmt_id_lock_glimpse.
+ */
+ revoke = lgd->lqeg_arr[lge_idx].lge_qunit == least;
+ }
+ mutex_unlock(&lqe->lqe_glbl_data_lock);
+ }
+
+ return revoke;
+}
+
+static bool qmt_set_revoke(struct lu_env *env, struct lquota_entry *lqe_gl,
+ int stype, int idx)
+{
+ unsigned long least_qunit = lqe2qpi(lqe_gl)->qpi_least_qunit;
+ bool notify = false;
+
+ if (qmt_dom(lqe_rtype(lqe_gl), stype))
+ return false;
+
+ qti_lqes_write_lock(env);
+ mutex_lock(&lqe_gl->lqe_glbl_data_lock);
+ if (lqe_gl->lqe_glbl_data) {
+ struct lqe_glbl_data *lgd = lqe_gl->lqe_glbl_data;
+ int lge_idx;
+
+ lge_idx = qmt_map_lge_idx(lgd, idx);
+ if (lgd->lqeg_arr[lge_idx].lge_qunit == least_qunit) {
+ struct lquota_entry *lqe;
+ int i;
+
+ for (i = 0; i < qti_lqes_cnt(env); i++) {
+ lqe = qti_lqes(env)[i];
+ LQUOTA_DEBUG(lqe,
+ "lge_qunit %llu least_qunit %lu idx %d\n",
+ lgd->lqeg_arr[lge_idx].lge_qunit,
+ least_qunit, idx);
+ if (lqe->lqe_qunit == least_qunit) {
+ lqe->lqe_revoke_time =
+ ktime_get_seconds();
+ notify |= qmt_adjust_edquot(lqe,
+ ktime_get_real_seconds());
+ }
+ }
+ }
+ }
+ mutex_unlock(&lqe_gl->lqe_glbl_data_lock);
+ qti_lqes_write_unlock(env);
+
+ return notify;
+}
+
/*
* Update LVB associated with the global quota index.
* This function is called from the DLM itself after a glimpse callback, in this
struct qmt_device *qmt = lu2qmt_dev(ld);
struct lquota_entry *lqe;
struct lquota_lvb *lvb;
- int rc = 0;
+ struct ldlm_lock *lock;
+ struct obd_export *exp;
+ bool need_revoke;
+ int rc = 0, idx, stype;
ENTRY;
LASSERT(res != NULL);
/* no need to update lvb for global quota locks */
RETURN(0);
+ lvb = req_capsule_server_swab_get(&req->rq_pill, &RMF_DLM_LVB,
+ lustre_swab_lquota_lvb);
+ if (lvb == NULL) {
+ CERROR("%s: failed to extract lvb from request\n",
+ qmt->qmt_svname);
+ RETURN(-EFAULT);
+ }
+
lqe = res->lr_lvb_data;
LASSERT(lqe != NULL);
+ lqe_getref(lqe);
/* allocate environement */
- OBD_ALLOC_PTR(env);
- if (env == NULL)
- RETURN(-ENOMEM);
+ env = lu_env_find();
+ LASSERT(env);
+ qti = qmt_info(env);
- /* initialize environment */
- rc = lu_env_init(env, LCT_MD_THREAD);
- if (rc) {
- OBD_FREE_PTR(env);
- RETURN(rc);
+ /* The request is a glimpse callback which was sent via the
+ * reverse import to the slave. What we care about here is the
+ * export associated with the slave and req->rq_export is
+ * definitely not what we are looking for (it is actually set to
+ * NULL here).
+ * Therefore we extract the lock from the request argument
+ * and use lock->l_export. */
+ lock = ldlm_request_lock(req);
+ if (IS_ERR(lock)) {
+ CERROR("%s: failed to get lock from request!\n",
+ qmt->qmt_svname);
+ GOTO(out, rc = PTR_ERR(lock));
}
- qti = qmt_info(env);
- lvb = req_capsule_server_get(&req->rq_pill, &RMF_DLM_LVB);
- if (lvb == NULL) {
- CERROR("%s: failed to extract lvb from request\n",
+ exp = class_export_get(lock->l_export);
+ if (exp == NULL) {
+ CERROR("%s: failed to get export from lock!\n",
qmt->qmt_svname);
- GOTO(out, rc);
+ GOTO(out, rc = -EFAULT);
}
- /* XXX: Space release handling to be added in a next patch */
+ stype = qmt_uuid2idx(&exp->exp_client_uuid, &idx);
+ if (stype < 0)
+ GOTO(out_exp, rc = stype);
+
+ need_revoke = qmt_clear_lgeg_arr_nu(lqe, stype, idx);
+ if (lvb->lvb_id_rel == 0) {
+ /* nothing to release */
+ if (lvb->lvb_id_may_rel != 0)
+ /* but might still release later ... */
+ lqe->lqe_may_rel += lvb->lvb_id_may_rel;
+ }
+
+ if (!need_revoke && lvb->lvb_id_rel == 0)
+ GOTO(out_exp, rc = 0);
+
+ rc = qmt_pool_lqes_lookup(env, qmt, lqe_rtype(lqe), stype,
+ lqe_qtype(lqe), &lqe->lqe_id, NULL, idx);
+ if (rc)
+ GOTO(out_exp, rc);
+
+ if (need_revoke && qmt_set_revoke(env, lqe, stype, idx)) {
+ int notify = false;
+
+ mutex_lock(&lqe->lqe_glbl_data_lock);
+ if (lqe->lqe_glbl_data) {
+ qmt_seed_glbe_edquot(env, lqe->lqe_glbl_data);
+ notify = true;
+ }
+ mutex_unlock(&lqe->lqe_glbl_data_lock);
+ if (notify)
+ qmt_id_lock_notify(qmt, lqe);
+ }
+ if (lvb->lvb_id_rel) {
+ LQUOTA_DEBUG(lqe, "releasing:%llu may release:%llu",
+ lvb->lvb_id_rel, lvb->lvb_id_may_rel);
+
+ /* release quota space */
+ rc = qmt_dqacq0(env, qmt, &exp->exp_client_uuid,
+ QUOTA_DQACQ_FL_REL, lvb->lvb_id_rel,
+ 0, &qti->qti_body,
+ qmt_dom(lqe_rtype(lqe), stype) ? -1 : idx);
+ if (rc || qti->qti_body.qb_count != lvb->lvb_id_rel)
+ LQUOTA_ERROR(lqe,
+ "failed to release quota space on glimpse %llu!=%llu : rc = %d\n",
+ qti->qti_body.qb_count,
+ lvb->lvb_id_rel, rc);
+ }
+ qti_lqes_fini(env);
+ if (rc)
+ GOTO(out_exp, rc);
EXIT;
+out_exp:
+ class_export_put(exp);
out:
- lu_env_fini(env);
- OBD_FREE_PTR(env);
+ lqe_putref(lqe);
return rc;
}
int qmt_lvbo_fill(struct lu_device *ld, struct ldlm_lock *lock, void *lvb,
int lvblen)
{
- struct ldlm_resource *res = lock->l_resource;
- struct lquota_lvb *qlvb = lvb;
+ struct ldlm_resource *res = lock->l_resource;
+ struct lquota_lvb *qlvb = lvb;
+ struct lu_env *env;
+ int rc;
ENTRY;
LASSERT(res != NULL);
+ rc = 0;
if (res->lr_type != LDLM_PLAIN || res->lr_lvb_data == NULL ||
res->lr_name.name[LUSTRE_RES_ID_SEQ_OFF] != FID_SEQ_QUOTA_GLB)
RETURN(-EINVAL);
+ env = lu_env_find();
+ LASSERT(env);
+
if (res->lr_name.name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] != 0) {
/* no ID quota lock associated with UID/GID 0 or with a seq 0,
* we are thus dealing with an ID lock. */
- struct lquota_entry *lqe = res->lr_lvb_data;
-
+ struct lquota_entry *lqe = res->lr_lvb_data;
+ struct qmt_device *qmt;
+ struct obd_uuid *uuid;
+ int idx;
+
+ uuid = &(lock)->l_export->exp_client_uuid;
+ rc = qmt_uuid2idx(uuid, &idx);
+ if (rc < 0)
+ RETURN(rc);
+ qmt = lu2qmt_dev(ld);
/* return current qunit value & edquot flags in lvb */
lqe_getref(lqe);
- qlvb->lvb_id_qunit = lqe->lqe_qunit;
- qlvb->lvb_flags = 0;
- if (lqe->lqe_edquot)
- qlvb->lvb_flags = LQUOTA_FL_EDQUOT;
+ rc = qmt_pool_lqes_lookup(env, qmt, lqe_rtype(lqe), rc,
+ lqe_qtype(lqe), &lqe->lqe_id,
+ NULL, idx);
+ if (!rc) {
+ qlvb->lvb_id_qunit = qti_lqes_min_qunit(env);
+ qlvb->lvb_flags = 0;
+ if (qti_lqes_edquot(env))
+ qlvb->lvb_flags = LQUOTA_FL_EDQUOT;
+ qti_lqes_fini(env);
+ }
+ CDEBUG(D_QUOTA, "uuid %s lqe_id %lu, edquot %llu qunit %llu\n",
+ (char *)uuid, (unsigned long)lqe->lqe_id.qid_uid,
+ qlvb->lvb_flags, qlvb->lvb_id_qunit);
lqe_putref(lqe);
} else {
/* global quota lock */
- struct lu_env *env;
- int rc;
- struct dt_object *obj = res->lr_lvb_data;
-
- OBD_ALLOC_PTR(env);
- if (env == NULL)
- RETURN(-ENOMEM);
-
- /* initialize environment */
- rc = lu_env_init(env, LCT_LOCAL);
- if (rc) {
- OBD_FREE_PTR(env);
- RETURN(rc);
- }
+ struct dt_object *obj = res->lr_lvb_data;
/* return current version of global index */
qlvb->lvb_glb_ver = dt_version_get(env, obj);
-
- lu_env_fini(env);
- OBD_FREE_PTR(env);
}
- RETURN(sizeof(struct lquota_lvb));
+ RETURN(rc = rc ?: sizeof(struct lquota_lvb));
}
/*
RETURN(0);
if (res->lr_name.name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] != 0) {
- struct lquota_entry *lqe = res->lr_lvb_data;
+ struct lquota_entry *lqe = res->lr_lvb_data;
- /* release lqe reference */
- lqe_putref(lqe);
+ queue_work(qmt_lvbo_free_wq, &lqe->lqe_work);
} else {
- struct dt_object *obj = res->lr_lvb_data;
- struct lu_env *env;
- int rc;
-
- OBD_ALLOC_PTR(env);
- if (env == NULL)
- RETURN(-ENOMEM);
-
- /* initialize environment */
- rc = lu_env_init(env, LCT_LOCAL);
- if (rc) {
- OBD_FREE_PTR(env);
- RETURN(rc);
- }
-
+ struct dt_object *obj = res->lr_lvb_data;
/* release object reference */
- lu_object_put(env, &obj->do_lu);
- lu_env_fini(env);
- OBD_FREE_PTR(env);
+ dt_object_put(lu_env_find(), obj);
}
res->lr_lvb_data = NULL;
RETURN(0);
}
-typedef int (*qmt_glimpse_cb_t)(const struct lu_env *, struct qmt_device *,
- struct obd_uuid *, union ldlm_gl_desc *,
- void *);
+typedef int (*qmt_glimpse_cb_t)(struct ldlm_lock *, struct lquota_entry *);
+
+struct qmt_gl_lock_array {
+ unsigned long q_max;
+ unsigned long q_cnt;
+ struct ldlm_lock **q_locks;
+};
+
+static void qmt_free_lock_array(struct qmt_gl_lock_array *array)
+{
+ int i;
+
+ if (array->q_max == 0) {
+ LASSERT(array->q_locks == NULL);
+ return;
+ }
+
+ for (i = 0; i < array->q_cnt; i++) {
+ LASSERT(array->q_locks[i]);
+ LDLM_LOCK_RELEASE(array->q_locks[i]);
+ array->q_locks[i] = NULL;
+ }
+ array->q_cnt = 0;
+ OBD_FREE_PTR_ARRAY(array->q_locks, array->q_max);
+ array->q_locks = NULL;
+ array->q_max = 0;
+}
+
+static int qmt_alloc_lock_array(struct ldlm_resource *res,
+ struct qmt_gl_lock_array *array,
+ qmt_glimpse_cb_t cb, void *arg)
+{
+ struct lquota_entry *lqe = arg;
+ struct list_head *pos;
+ unsigned long count = 0;
+ int fail_cnt = 0;
+ ENTRY;
+
+ LASSERT(!array->q_max && !array->q_cnt && !array->q_locks);
+again:
+ if (cb)
+ mutex_lock(&lqe->lqe_glbl_data_lock);
+ lock_res(res);
+ /* scan list of granted locks */
+ list_for_each(pos, &res->lr_granted) {
+ struct ldlm_lock *lock;
+ int rc;
+
+ lock = list_entry(pos, struct ldlm_lock, l_res_link);
+ LASSERT(lock->l_export);
+
+ if (cb != NULL) {
+ rc = cb(lock, arg);
+ /* slave should not be notified */
+ if (rc == 0)
+ continue;
+ }
+
+ count++;
+ if (array->q_max != 0 && array->q_cnt < array->q_max) {
+ array->q_locks[array->q_cnt] = LDLM_LOCK_GET(lock);
+ array->q_cnt++;
+ }
+ }
+ unlock_res(res);
+ if (cb)
+ mutex_unlock(&lqe->lqe_glbl_data_lock);
+
+ if (count > array->q_max) {
+ qmt_free_lock_array(array);
+ if (++fail_cnt > 5)
+ RETURN(-EAGAIN);
+ /*
+ * allocate more slots in case of more qualified locks are
+ * found during next loop
+ */
+ array->q_max = count + count / 2 + 10;
+ count = 0;
+ LASSERT(array->q_locks == NULL && array->q_cnt == 0);
+ OBD_ALLOC_PTR_ARRAY(array->q_locks, array->q_max);
+ if (array->q_locks == NULL) {
+ array->q_max = 0;
+ RETURN(-ENOMEM);
+ }
+
+ goto again;
+ }
+ RETURN(0);
+}
+
+static void qmt_setup_id_desc(struct ldlm_lock *lock, union ldlm_gl_desc *desc,
+ struct lquota_entry *lqe)
+{
+ struct obd_uuid *uuid = &(lock)->l_export->exp_client_uuid;
+ int idx, stype;
+ __u64 qunit;
+ bool edquot;
+
+ stype = qmt_uuid2idx(uuid, &idx);
+ LASSERT(stype >= 0);
+
+ /* DOM case - set global lqe settings */
+ if (qmt_dom(lqe_rtype(lqe), stype)) {
+ edquot = lqe->lqe_edquot;
+ qunit = lqe->lqe_qunit;
+ } else {
+ struct lqe_glbl_data *lgd;
+ int lge_idx;
+
+ mutex_lock(&lqe->lqe_glbl_data_lock);
+ lgd = lqe->lqe_glbl_data;
+ if (lgd) {
+ lge_idx = qmt_map_lge_idx(lgd, idx);
+ edquot = lgd->lqeg_arr[lge_idx].lge_edquot;
+ qunit = lgd->lqeg_arr[lge_idx].lge_qunit;
+ } else {
+ edquot = lqe->lqe_edquot;
+ qunit = lqe->lqe_qunit;
+ }
+ mutex_unlock(&lqe->lqe_glbl_data_lock);
+ }
+
+ /* fill glimpse descriptor with lqe settings */
+ desc->lquota_desc.gl_flags = edquot ? LQUOTA_FL_EDQUOT : 0;
+ desc->lquota_desc.gl_qunit = qunit;
+ CDEBUG(D_QUOTA, "setup desc: stype %d idx %d, edquot %llu qunit %llu\n",
+ stype, idx, desc->lquota_desc.gl_flags,
+ desc->lquota_desc.gl_qunit);
+}
+
/*
* Send glimpse callback to slaves holding a lock on resource \res.
* This is used to notify slaves of new quota settings or to claim quota space
*/
static int qmt_glimpse_lock(const struct lu_env *env, struct qmt_device *qmt,
struct ldlm_resource *res, union ldlm_gl_desc *desc,
- qmt_glimpse_cb_t cb, void *arg)
+ qmt_glimpse_cb_t cb, struct lquota_entry *lqe)
{
- cfs_list_t *tmp, *pos;
- CFS_LIST_HEAD(gl_list);
- int rc = 0;
+ union ldlm_gl_desc *descs = NULL;
+ struct list_head *tmp, *pos;
+ LIST_HEAD(gl_list);
+ struct qmt_gl_lock_array locks;
+ unsigned long i, locks_count;
+ int rc = 0;
ENTRY;
- lock_res(res);
- /* scan list of granted locks */
- cfs_list_for_each(pos, &res->lr_granted) {
- struct ldlm_glimpse_work *work;
- struct ldlm_lock *lock;
- struct obd_uuid *uuid;
-
- lock = cfs_list_entry(pos, struct ldlm_lock, l_res_link);
- LASSERT(lock->l_export);
- uuid = &lock->l_export->exp_client_uuid;
-
- if (cb != NULL) {
- rc = cb(env, qmt, uuid, desc, arg);
- if (rc == 0)
- /* slave should not be notified */
- continue;
- if (rc < 0)
- /* something wrong happened, we still notify */
- CERROR("%s: callback function failed to "
- "determine whether slave %s should be "
- "notified (%d)\n", qmt->qmt_svname,
- obd_uuid2str(uuid), rc);
+ memset(&locks, 0, sizeof(locks));
+ rc = qmt_alloc_lock_array(res, &locks, cb, lqe);
+ if (rc) {
+ CERROR("%s: failed to allocate glimpse lock array (%d)\n",
+ qmt->qmt_svname, rc);
+ RETURN(rc);
+ }
+ if (!locks.q_cnt) {
+ CDEBUG(D_QUOTA, "%s: no granted locks to send glimpse\n",
+ qmt->qmt_svname);
+ RETURN(0);
+ }
+ CDEBUG(D_QUOTA, "found granted locks %lu\n", locks.q_cnt);
+ locks_count = locks.q_cnt;
+
+ /* Use one desc for all works, when called from qmt_glb_lock_notify */
+ if (cb && locks.q_cnt > 1) {
+ /* TODO: think about to store this preallocated descs
+ * in lqe_global in lqeg_arr as a part of lqe_glbl_entry.
+ * The benefit is that we don't need to allocate/free
+ * and setup this descs each time. But the drawback is
+ * memory use (sizeof ldlm_gl_desc * OST_COUNT * user_number).
+ * for examfple it could be 88 * 256 * 10 000 about 225 MB. */
+ OBD_ALLOC(descs,
+ sizeof(struct ldlm_gl_lquota_desc) * locks.q_cnt);
+ if (!descs) {
+ CERROR("%s: alloc glimpse lock array failed: rc = %d\n",
+ qmt->qmt_svname, rc);
+ qmt_free_lock_array(&locks);
+ RETURN(-ENOMEM);
}
+ }
+
+ for (i = locks.q_cnt; i > 0; i--) {
+ struct ldlm_glimpse_work *work;
OBD_ALLOC_PTR(work);
if (work == NULL) {
- CERROR("%s: failed to notify %s\n", qmt->qmt_svname,
- obd_uuid2str(uuid));
+ CERROR("%s: failed to notify a lock.\n",
+ qmt->qmt_svname);
continue;
}
- cfs_list_add_tail(&work->gl_list, &gl_list);
- work->gl_lock = LDLM_LOCK_GET(lock);
+ if (cb) {
+ if (descs)
+ desc = &descs[i - 1];
+ qmt_setup_id_desc(locks.q_locks[i - 1], desc, lqe);
+ work->gl_interpret_data = lqe;
+ }
+
+ list_add_tail(&work->gl_list, &gl_list);
+ work->gl_lock = locks.q_locks[i - 1];
work->gl_flags = 0;
work->gl_desc = desc;
+ locks.q_locks[i - 1] = NULL;
+ locks.q_cnt--;
}
- unlock_res(res);
- if (cfs_list_empty(&gl_list)) {
+ qmt_free_lock_array(&locks);
+
+ if (list_empty(&gl_list)) {
CDEBUG(D_QUOTA, "%s: nobody to notify\n", qmt->qmt_svname);
- RETURN(0);
+ GOTO(out, rc = 0);
}
/* issue glimpse callbacks to all connected slaves */
rc = ldlm_glimpse_locks(res, &gl_list);
- cfs_list_for_each_safe(pos, tmp, &gl_list) {
+ list_for_each_safe(pos, tmp, &gl_list) {
struct ldlm_glimpse_work *work;
- work = cfs_list_entry(pos, struct ldlm_glimpse_work, gl_list);
+ work = list_entry(pos, struct ldlm_glimpse_work, gl_list);
- cfs_list_del(&work->gl_list);
+ list_del(&work->gl_list);
CERROR("%s: failed to notify %s of new quota settings\n",
qmt->qmt_svname,
obd_uuid2str(&work->gl_lock->l_export->exp_client_uuid));
LDLM_LOCK_RELEASE(work->gl_lock);
OBD_FREE_PTR(work);
}
+out:
+ if (descs)
+ OBD_FREE(descs,
+ sizeof(struct ldlm_gl_lquota_desc) * locks_count);
RETURN(rc);
}
struct qmt_thread_info *qti = qmt_info(env);
struct qmt_pool_info *pool = lqe2qpi(lqe);
struct ldlm_resource *res = NULL;
- int rc;
ENTRY;
- lquota_generate_fid(&qti->qti_fid, pool->qpi_key & 0x0000ffff,
- pool->qpi_key >> 16, lqe->lqe_site->lqs_qtype);
+ lquota_generate_fid(&qti->qti_fid, pool->qpi_rtype, lqe_qtype(lqe));
/* send glimpse callback to notify slaves of new quota settings */
qti->qti_gl_desc.lquota_desc.gl_id = lqe->lqe_id;
qti->qti_gl_desc.lquota_desc.gl_flags = 0;
- qti->qti_gl_desc.lquota_desc.gl_hardlimit = lqe->lqe_hardlimit;
- qti->qti_gl_desc.lquota_desc.gl_softlimit = lqe->lqe_softlimit;
+ if (lqe->lqe_is_default) {
+ qti->qti_gl_desc.lquota_desc.gl_hardlimit = 0;
+ qti->qti_gl_desc.lquota_desc.gl_softlimit = 0;
+ qti->qti_gl_desc.lquota_desc.gl_time = LQUOTA_GRACE_FLAG(0,
+ LQUOTA_FLAG_DEFAULT);
+
+ } else if (lqe->lqe_is_deleted) {
+ qti->qti_gl_desc.lquota_desc.gl_hardlimit = 0;
+ qti->qti_gl_desc.lquota_desc.gl_softlimit = 0;
+ qti->qti_gl_desc.lquota_desc.gl_time = LQUOTA_GRACE_FLAG(0,
+ LQUOTA_FLAG_DELETED);
+ } else if (lqe->lqe_is_reset) {
+ qti->qti_gl_desc.lquota_desc.gl_hardlimit = lqe->lqe_hardlimit;
+ qti->qti_gl_desc.lquota_desc.gl_softlimit = lqe->lqe_softlimit;
+ qti->qti_gl_desc.lquota_desc.gl_time = LQUOTA_GRACE_FLAG(0,
+ LQUOTA_FLAG_RESET);
+ } else if (lqe->lqe_granted > lqe->lqe_hardlimit) {
+ qti->qti_gl_desc.lquota_desc.gl_hardlimit = lqe->lqe_hardlimit;
+ qti->qti_gl_desc.lquota_desc.gl_softlimit = lqe->lqe_softlimit;
+ qti->qti_gl_desc.lquota_desc.gl_time = LQUOTA_GRACE_FLAG(0,
+ LQUOTA_FLAG_REVOKE);
+ } else {
+ qti->qti_gl_desc.lquota_desc.gl_hardlimit = lqe->lqe_hardlimit;
+ qti->qti_gl_desc.lquota_desc.gl_softlimit = lqe->lqe_softlimit;
+ qti->qti_gl_desc.lquota_desc.gl_time = lqe->lqe_gracetime;
+ }
qti->qti_gl_desc.lquota_desc.gl_ver = ver;
/* look up ldlm resource associated with global index */
fid_build_reg_res_name(&qti->qti_fid, &qti->qti_resid);
- res = ldlm_resource_get(pool->qpi_qmt->qmt_ns, NULL, &qti->qti_resid,
+ res = ldlm_resource_get(pool->qpi_qmt->qmt_ns, &qti->qti_resid,
LDLM_PLAIN, 0);
- if (res == NULL) {
+ if (IS_ERR(res)) {
/* this might happen if no slaves have enqueued global quota
* locks yet */
LQUOTA_DEBUG(lqe, "failed to lookup ldlm resource associated "
RETURN_EXIT;
}
- rc = qmt_glimpse_lock(env, pool->qpi_qmt, res, &qti->qti_gl_desc,
- NULL, NULL);
+ qmt_glimpse_lock(env, pool->qpi_qmt, res, &qti->qti_gl_desc,
+ NULL, NULL);
ldlm_resource_putref(res);
EXIT;
}
/* Callback function used to select locks that should be glimpsed when
* broadcasting the new qunit value */
-static int qmt_id_lock_cb(const struct lu_env *env, struct qmt_device *qmt,
- struct obd_uuid *uuid, union ldlm_gl_desc *desc,
- void *arg)
+static int qmt_id_lock_cb(struct ldlm_lock *lock, struct lquota_entry *lqe)
{
- struct obd_uuid *slv_uuid = arg;
+ struct obd_uuid *uuid = &(lock)->l_export->exp_client_uuid;
+ struct lqe_glbl_data *lgd = lqe->lqe_glbl_data;
+ int idx;
+ int stype = qmt_uuid2idx(uuid, &idx);
+
+ LASSERT(stype == QMT_STYPE_OST || stype == QMT_STYPE_MDT);
+
+ CDEBUG(D_QUOTA, "stype %d rtype %d idx %d uuid %s\n",
+ stype, lqe_rtype(lqe), idx, uuid->uuid);
+ /* Quota pools support only OSTs, despite MDTs also could be registered
+ * as LQUOTA_RES_DT devices(DOM). */
+ if (qmt_dom(lqe_rtype(lqe), stype))
+ return 1;
+
+ if (lgd) {
+ int lge_idx = qmt_map_lge_idx(lgd, idx);
+
+ CDEBUG(D_QUOTA,
+ "tgt idx:%d lge_idx:%d edquot_nu:%d qunit_nu:%d\n",
+ idx, lge_idx, lgd->lqeg_arr[lge_idx].lge_edquot_nu,
+ lgd->lqeg_arr[lge_idx].lge_qunit_nu);
+ return lgd->lqeg_arr[lge_idx].lge_edquot_nu ||
+ lgd->lqeg_arr[lge_idx].lge_qunit_nu;
+ }
- if (slv_uuid != NULL && obd_uuid_equals(uuid, slv_uuid))
- RETURN(0);
- RETURN(+1);
+ return 0;
}
+
/*
* Send glimpse request on per-ID lock to push new qunit value to slave.
*
struct qmt_thread_info *qti = qmt_info(env);
struct qmt_pool_info *pool = lqe2qpi(lqe);
struct ldlm_resource *res = NULL;
- int rc;
ENTRY;
if (!lqe->lqe_enforced)
RETURN_EXIT;
- lquota_generate_fid(&qti->qti_fid, pool->qpi_key & 0x0000ffff,
- pool->qpi_key >> 16, lqe->lqe_site->lqs_qtype);
- fid_build_quota_resid(&qti->qti_fid, &lqe->lqe_id, &qti->qti_resid);
- res = ldlm_resource_get(qmt->qmt_ns, NULL, &qti->qti_resid, LDLM_PLAIN,
- 0);
- if (res == NULL) {
+ lquota_generate_fid(&qti->qti_fid, pool->qpi_rtype, lqe_qtype(lqe));
+ fid_build_quota_res_name(&qti->qti_fid, &lqe->lqe_id, &qti->qti_resid);
+ res = ldlm_resource_get(qmt->qmt_ns, &qti->qti_resid, LDLM_PLAIN, 0);
+ if (IS_ERR(res)) {
/* this might legitimately happens if slaves haven't had the
* opportunity to enqueue quota lock yet. */
LQUOTA_DEBUG(lqe, "failed to lookup ldlm resource for per-ID "
"lock "DFID, PFID(&qti->qti_fid));
+ lqe_write_lock(lqe);
+ if (lqe->lqe_revoke_time == 0 &&
+ lqe->lqe_qunit == pool->qpi_least_qunit)
+ lqe->lqe_revoke_time = ktime_get_seconds();
+ lqe_write_unlock(lqe);
RETURN_EXIT;
}
- lqe_read_lock(lqe);
+ lqe_write_lock(lqe);
+ /*
+ * It is possible to add an lqe in a 2nd time while the same lqe
+ * from the 1st time is still sending glimpse
+ */
+ if (lqe->lqe_gl)
+ GOTO(out, 0);
/* The purpose of glimpse callback on per-ID lock is twofold:
* - notify slaves of new qunit value and hope they will release some
* spare quota space in return
* - notify slaves that master ran out of quota space and there is no
* need to send acquire request any more until further notice */
- /* fill glimpse descriptor with lqe settings */
- if (lqe->lqe_edquot)
- qti->qti_gl_desc.lquota_desc.gl_flags = LQUOTA_FL_EDQUOT;
- else
- qti->qti_gl_desc.lquota_desc.gl_flags = 0;
- qti->qti_gl_desc.lquota_desc.gl_qunit = lqe->lqe_qunit;
- lqe_read_unlock(lqe);
-
- /* The rebalance thread is the only thread which can issue glimpses */
- LASSERT(!lqe->lqe_gl);
+ /* TODO: it is not clear how to implement below case for all lqes
+ * from where slaves will be notified in qmt_glimpse_lock. Because
+ * here we have just global lqe with an array of OSTs that should
+ * be notified. Theoretically we can find all lqes that includes
+ * these OSTs, but it is not trivial. So I would propose to move
+ * this case to another place ... */
+ if (lqe->lqe_revoke_time == 0 &&
+ lqe->lqe_qunit == pool->qpi_least_qunit)
+ /* reset lqe_may_rel, it will be updated on glimpse callback
+ * replies if needed */
+ lqe->lqe_may_rel = 0;
+
lqe->lqe_gl = true;
+ lqe_write_unlock(lqe);
/* issue glimpse callback to slaves */
- rc = qmt_glimpse_lock(env, qmt, res, &qti->qti_gl_desc,
- uuid ? qmt_id_lock_cb : NULL, (void *)uuid);
-
+ if (lqe->lqe_glbl_data)
+ qmt_glimpse_lock(env, qmt, res, &qti->qti_gl_desc,
+ qmt_id_lock_cb, lqe);
+
+ lqe_write_lock(lqe);
+ if (lqe->lqe_revoke_time == 0 &&
+ lqe->lqe_qunit == pool->qpi_least_qunit) {
+ lqe->lqe_revoke_time = ktime_get_seconds();
+ qmt_adjust_edquot(lqe, ktime_get_real_seconds());
+ }
LASSERT(lqe->lqe_gl);
lqe->lqe_gl = false;
-
+out:
+ lqe_write_unlock(lqe);
ldlm_resource_putref(res);
EXIT;
}
bool added = false;
ENTRY;
+ LASSERT(lqe->lqe_is_global);
lqe_getref(lqe);
- cfs_spin_lock(&qmt->qmt_reba_lock);
- if (!qmt->qmt_stopping && cfs_list_empty(&lqe->lqe_link)) {
- cfs_list_add_tail(&lqe->lqe_link, &qmt->qmt_reba_list);
+ spin_lock(&qmt->qmt_reba_lock);
+ if (!qmt->qmt_stopping && list_empty(&lqe->lqe_link)) {
+ list_add_tail(&lqe->lqe_link, &qmt->qmt_reba_list);
added = true;
+ if (qmt->qmt_reba_task)
+ wake_up_process(qmt->qmt_reba_task);
}
- cfs_spin_unlock(&qmt->qmt_reba_lock);
+ spin_unlock(&qmt->qmt_reba_lock);
- if (added)
- cfs_waitq_signal(&qmt->qmt_reba_thread.t_ctl_waitq);
- else
+ if (!added)
lqe_putref(lqe);
EXIT;
}
+struct qmt_reba_args {
+ struct qmt_device *qra_dev;
+ struct lu_env qra_env;
+ struct completion *qra_started;
+};
+
+#ifndef TASK_IDLE
+#define TASK_IDLE TASK_INTERRUPTIBLE
+#endif
+
/*
* The rebalance thread is in charge of sending glimpse callbacks on per-ID
* quota locks owned by slaves in order to notify them of:
* try to acquire quota from the master since this latter has already
* distributed all the space.
*/
-static int qmt_reba_thread(void *arg)
+static int qmt_reba_thread(void *_args)
{
- struct qmt_device *qmt = (struct qmt_device *)arg;
- struct ptlrpc_thread *thread = &qmt->qmt_reba_thread;
- struct l_wait_info lwi = { 0 };
- struct lu_env *env;
+ struct qmt_reba_args *args = _args;
+ struct qmt_device *qmt = args->qra_dev;
+ struct lu_env *env = &args->qra_env;
struct lquota_entry *lqe, *tmp;
- char pname[MTI_NAME_MAXLEN];
- int rc;
ENTRY;
- OBD_ALLOC_PTR(env);
- if (env == NULL)
- RETURN(-ENOMEM);
-
- rc = lu_env_init(env, LCT_MD_THREAD);
- if (rc) {
- CERROR("%s: failed to init env.", qmt->qmt_svname);
- OBD_FREE_PTR(env);
- RETURN(rc);
- }
-
- snprintf(pname, MTI_NAME_MAXLEN, "qmt_reba_%s", qmt->qmt_svname);
- cfs_daemonize(pname);
-
- thread_set_flags(thread, SVC_RUNNING);
- cfs_waitq_signal(&thread->t_ctl_waitq);
-
- while (1) {
- l_wait_event(thread->t_ctl_waitq,
- !cfs_list_empty(&qmt->qmt_reba_list) ||
- !thread_is_running(thread), &lwi);
-
- cfs_spin_lock(&qmt->qmt_reba_lock);
- cfs_list_for_each_entry_safe(lqe, tmp, &qmt->qmt_reba_list,
- lqe_link) {
- cfs_list_del_init(&lqe->lqe_link);
- cfs_spin_unlock(&qmt->qmt_reba_lock);
-
- if (thread_is_running(thread))
+ complete(args->qra_started);
+ while (({set_current_state(TASK_IDLE);
+ !kthread_should_stop(); })) {
+
+ spin_lock(&qmt->qmt_reba_lock);
+ list_for_each_entry_safe(lqe, tmp, &qmt->qmt_reba_list,
+ lqe_link) {
+ __set_current_state(TASK_RUNNING);
+ list_del_init(&lqe->lqe_link);
+ spin_unlock(&qmt->qmt_reba_lock);
+
+ /* lqe_ref == 1 means we hold the last ref,
+ * so no need to send glimpse callbacks.
+ */
+ if (!kthread_should_stop() &&
+ atomic_read(&lqe->lqe_ref) > 1)
qmt_id_lock_glimpse(env, qmt, lqe, NULL);
lqe_putref(lqe);
- cfs_spin_lock(&qmt->qmt_reba_lock);
+ spin_lock(&qmt->qmt_reba_lock);
}
- cfs_spin_unlock(&qmt->qmt_reba_lock);
-
- if (!thread_is_running(thread))
- break;
+ spin_unlock(&qmt->qmt_reba_lock);
+ schedule();
}
+ __set_current_state(TASK_RUNNING);
+
+ lu_env_remove(env);
lu_env_fini(env);
- OBD_FREE_PTR(env);
- thread_set_flags(thread, SVC_STOPPED);
- cfs_waitq_signal(&thread->t_ctl_waitq);
- RETURN(rc);
+ OBD_FREE_PTR(args);
+ RETURN(0);
}
/*
*/
int qmt_start_reba_thread(struct qmt_device *qmt)
{
- struct ptlrpc_thread *thread = &qmt->qmt_reba_thread;
- struct l_wait_info lwi = { 0 };
- int rc;
+ struct task_struct *task;
+ struct qmt_reba_args *args;
+ DECLARE_COMPLETION_ONSTACK(started);
+ int rc;
ENTRY;
- rc = cfs_create_thread(qmt_reba_thread, (void *)qmt, 0);
- if (rc < 0) {
- CERROR("%s: failed to start rebalance thread (%d)\n",
- qmt->qmt_svname, rc);
- thread_set_flags(thread, SVC_STOPPED);
- RETURN(rc);
+ OBD_ALLOC_PTR(args);
+ if (args == NULL)
+ RETURN(-ENOMEM);
+ args->qra_dev = qmt;
+ args->qra_started = &started;
+
+ rc = lu_env_init(&args->qra_env, LCT_MD_THREAD);
+ if (rc) {
+ CERROR("%s: failed to init env.\n", qmt->qmt_svname);
+ GOTO(out_env, rc);
}
- l_wait_event(thread->t_ctl_waitq,
- thread_is_running(thread) || thread_is_stopped(thread),
- &lwi);
+ task = kthread_create(qmt_reba_thread, args,
+ "qmt_reba_%s", qmt->qmt_svname);
+ if (IS_ERR(task)) {
+ CERROR("%s: failed to start rebalance thread (%ld)\n",
+ qmt->qmt_svname, PTR_ERR(task));
+ GOTO(out_env_fini, rc = PTR_ERR(task));
+ }
+
+ rc = lu_env_add_task(&args->qra_env, task);
+ if (rc) {
+ kthread_stop(task);
+ GOTO(out_env_fini, rc);
+ }
+ qmt->qmt_reba_task = task;
+ wake_up_process(task);
+ wait_for_completion(&started);
RETURN(0);
+out_env_fini:
+ lu_env_fini(&args->qra_env);
+out_env:
+ OBD_FREE_PTR(args);
+ RETURN(rc);
}
/*
*/
void qmt_stop_reba_thread(struct qmt_device *qmt)
{
- struct ptlrpc_thread *thread = &qmt->qmt_reba_thread;
+ struct task_struct *task;
- if (!thread_is_stopped(thread)) {
- struct l_wait_info lwi = { 0 };
+ spin_lock(&qmt->qmt_reba_lock);
+ task = qmt->qmt_reba_task;
+ qmt->qmt_reba_task = NULL;
+ spin_unlock(&qmt->qmt_reba_lock);
- thread_set_flags(thread, SVC_STOPPING);
- cfs_waitq_signal(&thread->t_ctl_waitq);
+ if (task)
+ kthread_stop(task);
- l_wait_event(thread->t_ctl_waitq, thread_is_stopped(thread),
- &lwi);
- }
- LASSERT(cfs_list_empty(&qmt->qmt_reba_list));
+ LASSERT(list_empty(&qmt->qmt_reba_list));
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff