* needed. qsd_prepare() should typically be called when
* ->ldo_prepare is invoked.
*
+ * - qsd_start(): a qsd instance should be started once recovery is completed
+ * (i.e. when ->ldo_recovery_complete is called). This is used
+ * to notify the qsd layer that quota should now be enforced
+ * again via the qsd_op_begin/end functions. The last step of the
+ * reintegration prodecure (namely usage reconciliation) will be
+ * completed during start.
+ *
* - qsd_fini(): is used to release a qsd_instance structure allocated with
* qsd_init(). This releases all quota slave objects and frees the
* structures associated with the qsd_instance.
*
+ * - qsd_op_begin(): is used to enforce quota, it must be called in the
+ * declaration of each operation. qsd_op_end() should then be
+ * invoked later once all operations have been completed in
+ * order to release/adjust the quota space.
+ * Running qsd_op_begin() before qsd_start() isn't fatal and
+ * will return success.
+ * Once qsd_start() has been run, qsd_op_begin() will block
+ * until the reintegration procedure is completed.
+ *
+ * - qsd_op_end(): performs the post operation quota processing. This must be
+ * called after the operation transaction stopped.
+ * While qsd_op_begin() must be invoked each time a new
+ * operation is declared, qsd_op_end() should be called only
+ * once for the whole transaction.
+ *
+ * - qsd_adjust_quota(): triggers pre-acquire/release if necessary.
+ *
* Below are the function prototypes to be used by OSD layer to manage quota
* enforcement. Arguments are documented where each function is defined. */
struct qsd_instance *qsd_init(const struct lu_env *, char *, struct dt_device *,
cfs_proc_dir_entry_t *);
-
int qsd_prepare(const struct lu_env *, struct qsd_instance *);
-
+int qsd_start(const struct lu_env *, struct qsd_instance *);
void qsd_fini(const struct lu_env *, struct qsd_instance *);
-
-/* XXX: dummy qsd_op_begin() & qsd_op_end(), will be replaced with the real
- * one once all the enforcement code landed. */
-static inline int qsd_op_begin(const struct lu_env *env,
- struct qsd_instance *qsd,
- struct lquota_trans *trans,
- struct lquota_id_info *qi,
- int *flags)
-{
- return 0;
-}
-
-static inline void qsd_op_end(const struct lu_env *env,
- struct qsd_instance *qsd,
- struct lquota_trans *trans)
-{
-}
+int qsd_op_begin(const struct lu_env *, struct qsd_instance *,
+ struct lquota_trans *, struct lquota_id_info *, int *);
+void qsd_op_end(const struct lu_env *, struct qsd_instance *,
+ struct lquota_trans *);
+void qsd_adjust_quota(const struct lu_env *, struct qsd_instance *,
+ union lquota_id *, int);
/*
* Quota information attached to a transaction
extern int ost_handle(struct ptlrpc_request *req);
-static int ofd_start(const struct lu_env *env, struct lu_device *dev)
+static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
+ struct lu_device *dev)
{
+ struct ofd_thread_info *info;
struct ofd_device *ofd = ofd_dev(dev);
+ struct obd_device *obd = ofd_obd(ofd);
struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
int rc;
ENTRY;
+ rc = lu_env_refill((struct lu_env *)env);
+ if (rc != 0) {
+ CERROR("Failure to refill session: '%d'\n", rc);
+ RETURN(rc);
+ }
+
+ info = ofd_info_init(env, NULL);
+ if (info == NULL)
+ RETURN(-EFAULT);
+
/* initialize lower device */
rc = next->ld_ops->ldo_prepare(env, dev, next);
+ target_recovery_init(&ofd->ofd_lut, ost_handle);
+
+ if (obd->obd_recovering == 0)
+ ofd_postrecov(env, ofd);
+
RETURN(rc);
}
.ldo_object_alloc = ofd_object_alloc,
.ldo_process_config = ofd_process_config,
.ldo_recovery_complete = ofd_recovery_complete,
+ .ldo_prepare = ofd_prepare,
};
static int ofd_procfs_init(struct ofd_device *ofd)
m->ofd_grant_ratio =
ofd_grant_ratio_conv(m->ofd_dt_conf.ddp_grant_reserved);
- rc = ofd_start(env, &m->ofd_dt_dev.dd_lu_dev);
- if (rc)
- GOTO(err_fini_stack, rc);
-
rc = lut_init(env, &m->ofd_lut, obd, m->ofd_osd);
if (rc)
GOTO(err_free_ns, rc);
if (rc)
GOTO(err_fini_lut, rc);
- target_recovery_init(&m->ofd_lut, ost_handle);
-
RETURN(0);
err_fini_lut:
lut_fini(env, &m->ofd_lut);
/* ofd_dev.c */
extern struct lu_context_key ofd_thread_key;
+int ofd_postrecov(const struct lu_env *env, struct ofd_device *ofd);
/* ofd_obd.c */
extern struct obd_ops ofd_obd_ops;
return 0;
}
+int ofd_postrecov(const struct lu_env *env, struct ofd_device *ofd)
+{
+ struct lu_device *ldev = &ofd->ofd_dt_dev.dd_lu_dev;
+
+ CDEBUG(D_HA, "%s: recovery is over\n", ofd_obd(ofd)->obd_name);
+ return ldev->ld_ops->ldo_recovery_complete(env, ldev);
+}
+
int ofd_obd_postrecov(struct obd_device *obd)
{
struct lu_env env;
RETURN(rc);
ofd_info_init(&env, obd->obd_self_export);
- rc = ldev->ld_ops->ldo_recovery_complete(&env, ldev);
+ rc = ofd_postrecov(&env, ofd_dev(ldev));
+
lu_env_fini(&env);
RETURN(rc);
}
osd_index_fini(obj);
if (inode != NULL) {
+ struct qsd_instance *qsd = osd_obj2dev(obj)->od_quota_slave;
+ qid_t uid = inode->i_uid;
+ qid_t gid = inode->i_gid;
+
iput(inode);
obj->oo_inode = NULL;
+
+ if (qsd != NULL) {
+ struct osd_thread_info *info = osd_oti_get(env);
+ struct lquota_id_info *qi = &info->oti_qi;
+
+ /* Release granted quota to master if necessary */
+ qi->lqi_id.qid_uid = uid;
+ qsd_adjust_quota(env, qsd, &qi->lqi_id, USRQUOTA);
+
+ qi->lqi_id.qid_uid = gid;
+ qsd_adjust_quota(env, qsd, &qi->lqi_id, GRPQUOTA);
+ }
}
}
static int osd_recovery_complete(const struct lu_env *env,
struct lu_device *d)
{
- RETURN(0);
+ struct osd_device *osd = osd_dev(d);
+ int rc = 0;
+ ENTRY;
+
+ if (osd->od_quota_slave == NULL)
+ RETURN(0);
+
+ /* start qsd instance on recovery completion, this notifies the quota
+ * slave code that we are about to process new requests now */
+ rc = qsd_start(env, osd->od_quota_slave);
+ RETURN(rc);
}
/*
static int osd_recovery_complete(const struct lu_env *env, struct lu_device *d)
{
+ struct osd_device *osd = osd_dev(d);
+ int rc = 0;
ENTRY;
- RETURN(0);
+
+ if (osd->od_quota_slave == NULL)
+ RETURN(0);
+
+ /* start qsd instance on recovery completion, this notifies the quota
+ * slave code that we are about to process new requests now */
+ rc = qsd_start(env, osd->od_quota_slave);
+ RETURN(rc);
}
/*
OBD_CONNECT_SKIP_ORPHAN |
OBD_CONNECT_VERSION |
OBD_CONNECT_FID;
+
+ if (is_osp_on_ost(osp->opd_obd->obd_name))
+ ocd->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
+
ocd->ocd_version = LUSTRE_VERSION_CODE;
LASSERT(data->ocd_connect_flags & OBD_CONNECT_INDEX);
ocd->ocd_index = data->ocd_index;
MODULES := lquota
-qmt-objs := qmt_dev.o qmt_handler.o qmt_lock.o qmt_entry.o qmt_pool.o
-
quota-objs := lproc_quota.o lquota_lib.o lquota_disk.o lquota_entry.o
-qsd-objs := qsd_lib.o qsd_request.o qsd_entry.o qsd_lock.o
-qsd-objs += qsd_reint.o qsd_writeback.o qsd_config.o
+qmt-objs := qmt_dev.o qmt_handler.o qmt_lock.o qmt_entry.o qmt_pool.o
-lquota-objs := $(quota-objs) $(qsd-objs)
+qsd-objs := qsd_lib.o qsd_request.o qsd_entry.o qsd_lock.o
+qsd-objs += qsd_reint.o qsd_writeback.o qsd_config.o qsd_handler.o
-lquota-objs += $(qmt-objs)
+lquota-objs := $(quota-objs) $(qsd-objs) $(qmt-objs)
-EXTRA_DIST := $(lquota-objs:%.o=%.c) lquota_internal.h qsd_internal.h
-EXTRA_DIST += qmt_internal.h
+EXTRA_DIST := $(lquota-objs:%.o=%.c)
+EXTRA_DIST += lquota_internal.h qsd_internal.h qmt_internal.h
@INCLUDE_RULES@
#define LQUOTA_LEAST_QUNIT(type) \
(type == LQUOTA_RES_MD ? (1 << 10) : toqb(PTLRPC_MAX_BRW_SIZE))
+#define LQUOTA_OVER_FL(type) \
+ (type == USRQUOTA ? QUOTA_FL_OVER_USRQUOTA : QUOTA_FL_OVER_GRPQUOTA)
+
/* Common data shared by quota-level handlers. This is allocated per-thread to
* reduce stack consumption */
struct lquota_thread_info {
char *cfgstr = lustre_cfg_string(lcfg, 1);
char *keystr, *valstr;
int rc, pool, enabled = 0;
+ bool reint = false;
ENTRY;
CDEBUG(D_QUOTA, "processing quota parameter: fs:%s cfgstr:%s\n", fsname,
qfs = qsd_get_fsinfo(fsname, 0);
if (qfs == NULL) {
- CERROR("Fail to find quota filesystem information for %s\n",
+ CERROR("failed to find quota filesystem information for %s\n",
fsname);
RETURN(-ENOENT);
}
if (strchr(valstr, 'g'))
enabled |= 1 << GRPQUOTA;
+ cfs_down(&qfs->qfs_sem);
if (qfs->qfs_enabled[pool - LQUOTA_FIRST_RES] == enabled)
/* no change required */
GOTO(out, rc = 0);
+ if ((qfs->qfs_enabled[pool - LQUOTA_FIRST_RES] & enabled) != enabled)
+ reint = true;
+
qfs->qfs_enabled[pool - LQUOTA_FIRST_RES] = enabled;
+
+ /* trigger reintegration for all qsd */
+ if (reint) {
+ struct qsd_instance *qsd;
+ struct qsd_qtype_info *qqi;
+
+ cfs_list_for_each_entry(qsd, &qfs->qfs_qsd_list, qsd_link) {
+ bool skip = false;
+ int type;
+
+ /* start reintegration only if qsd_prepare() was
+ * successfully called */
+ cfs_read_lock(&qsd->qsd_lock);
+ if (!qsd->qsd_prepared)
+ skip = true;
+ cfs_read_unlock(&qsd->qsd_lock);
+ if (skip)
+ continue;
+
+ for (type = USRQUOTA; type < MAXQUOTAS; type++) {
+ qqi = qsd->qsd_type_array[type];
+ qsd_start_reint_thread(qqi);
+ }
+ }
+ }
out:
+ cfs_up(&qfs->qfs_sem);
qsd_put_fsinfo(qfs);
RETURN(0);
}
--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * 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 LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2012 Intel, Inc.
+ * 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/version.h>
+#include <linux/fs.h>
+#include <asm/unistd.h>
+#include <linux/quotaops.h>
+#include <linux/init.h>
+
+#include <obd_class.h>
+#include <lustre_param.h>
+#include <lprocfs_status.h>
+
+#include "qsd_internal.h"
+
+/*
+ * helper function returning how much space is currently reserved for requests
+ * in flight.
+ */
+static inline int lqe_pending_dqacq(struct lquota_entry *lqe)
+{
+ int pending;
+
+ lqe_read_lock(lqe);
+ pending = lqe->lqe_pending_req;
+ lqe_read_unlock(lqe);
+
+ return pending;
+}
+
+/*
+ * helper function returning true when the connection to master is ready to be
+ * used.
+ */
+static inline int qsd_ready(struct qsd_instance *qsd)
+{
+ struct obd_import *imp = NULL;
+
+ cfs_read_lock(&qsd->qsd_lock);
+ if (qsd->qsd_exp_valid)
+ imp = class_exp2cliimp(qsd->qsd_exp);
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ return (imp == NULL || imp->imp_invalid) ? false : true;
+}
+
+/*
+ * Helper function returning true when quota space need to be adjusted (some
+ * unused space should be free or pre-acquire) and false otherwise.
+ */
+static bool qsd_adjust_needed(struct lquota_entry *lqe)
+{
+ struct qsd_qtype_info *qqi;
+ __u64 usage, granted;
+
+ qqi = lqe2qqi(lqe);
+
+ if (!lqe->lqe_enforced || qqi->qqi_qsd->qsd_stopping)
+ /* if quota isn't enforced for this id, no need to adjust
+ * Similarly, no need to perform adjustment if the target is in
+ * the process of shutting down. */
+ return false;
+
+ usage = lqe->lqe_usage;
+ usage += lqe->lqe_pending_write + lqe->lqe_waiting_write;
+ granted = lqe->lqe_granted - lqe->lqe_pending_rel;
+
+ /* need to re-acquire per-ID lock or release all grant */
+ if (!lustre_handle_is_used(&lqe->lqe_lockh) &&
+ lqe->lqe_granted > lqe->lqe_usage)
+ return true;
+
+ /* good old quota qunit adjustment logic which has been around since
+ * lustre 1.4:
+ * 1. Need to release some space? */
+ if (granted > usage + lqe->lqe_qunit)
+ return true;
+
+ /* 2. Any quota overrun? */
+ if (lqe->lqe_usage > lqe->lqe_granted)
+ /* we ended up consuming more than we own, we need to have this
+ * fixed ASAP */
+ return true;
+
+ /* 3. Time to pre-acquire? */
+ if (!lqe->lqe_edquot && !lqe->lqe_nopreacq && lqe->lqe_qunit != 0 &&
+ granted < usage + lqe->lqe_qtune)
+ /* need to pre-acquire some space if we don't want to block
+ * client's requests */
+ return true;
+
+ return false;
+}
+
+/*
+ * Callback function called when an acquire/release request sent to the master
+ * is completed
+ */
+static void qsd_dqacq_completion(const struct lu_env *env,
+ struct qsd_qtype_info *qqi,
+ struct quota_body *reqbody,
+ struct quota_body *repbody,
+ struct lustre_handle *lockh,
+ union ldlm_wire_lvb *lvb,
+ void *arg, int ret)
+{
+ struct lquota_entry *lqe = (struct lquota_entry *)arg;
+ struct qsd_thread_info *qti;
+ int rc;
+ bool adjust = false, cancel = false;
+ ENTRY;
+
+ LASSERT(qqi != NULL && lqe != NULL);
+
+ /* environment passed by ptlrpcd is mostly used by CLIO and hasn't the
+ * DT tags set. */
+ rc = lu_env_refill_by_tags((struct lu_env *)env, LCT_DT_THREAD, 0);
+ if (rc) {
+ LQUOTA_ERROR(lqe, "failed to refill environmnent %d", rc);
+ lqe_write_lock(lqe);
+ /* can't afford to adjust quota space with no suitable lu_env */
+ GOTO(out_noadjust, rc);
+ }
+ qti = qsd_info(env);
+
+ lqe_write_lock(lqe);
+
+ if (ret != 0 && ret != -EDQUOT && ret != -EINPROGRESS) {
+ LQUOTA_ERROR(lqe, "DQACQ failed with %d, op:%x", ret,
+ reqbody->qb_flags);
+ GOTO(out, ret);
+ }
+
+ /* despite -EDQUOT & -EINPROGRESS errors, the master might still
+ * grant us back quota space to adjust quota overrun */
+
+ LQUOTA_DEBUG(lqe, "DQACQ returned %d", ret);
+
+ /* Set the lqe_lockh */
+ if (lustre_handle_is_used(lockh) &&
+ !lustre_handle_equal(lockh, &lqe->lqe_lockh))
+ lustre_handle_copy(&lqe->lqe_lockh, lockh);
+
+ /* If the replied qb_count is zero, it means master didn't process
+ * the DQACQ since the limit for this ID has been removed, so we
+ * should not update quota entry & slave index copy neither. */
+ if (repbody != NULL && repbody->qb_count != 0) {
+ LQUOTA_DEBUG(lqe, "DQACQ qb_count:"LPU64, repbody->qb_count);
+
+ if (req_is_rel(reqbody->qb_flags)) {
+ if (lqe->lqe_granted < repbody->qb_count) {
+ LQUOTA_ERROR(lqe, "can't release more space "
+ "than owned "LPU64"<"LPU64,
+ lqe->lqe_granted,
+ repbody->qb_count);
+ lqe->lqe_granted = 0;
+ } else {
+ lqe->lqe_granted -= repbody->qb_count;
+ }
+ /* Cancel the per-ID lock initiatively when there
+ * isn't any usage & grant, which can avoid master
+ * sending glimpse unnecessarily to this slave on
+ * quota revoking */
+ if (!lqe->lqe_pending_write && !lqe->lqe_granted &&
+ !lqe->lqe_waiting_write && !lqe->lqe_usage)
+ cancel = true;
+ } else {
+ lqe->lqe_granted += repbody->qb_count;
+ }
+ qti->qti_rec.lqr_slv_rec.qsr_granted = lqe->lqe_granted;
+ lqe_write_unlock(lqe);
+
+ /* Update the slave index file in the dedicated thread. So far,
+ * We don't update the version of slave index copy on DQACQ.
+ * No locking is necessary since nobody can change
+ * lqe->lqe_granted while lqe->lqe_pending_req > 0 */
+ qsd_upd_schedule(qqi, lqe, &lqe->lqe_id, &qti->qti_rec, 0,
+ false);
+ lqe_write_lock(lqe);
+ }
+
+ /* extract information from lvb */
+ if (ret == 0 && lvb != 0) {
+ if (lvb->l_lquota.lvb_id_qunit != 0)
+ qsd_set_qunit(lqe, lvb->l_lquota.lvb_id_qunit);
+ if (lvb->l_lquota.lvb_flags & LQUOTA_FL_EDQUOT)
+ lqe->lqe_edquot = true;
+ else
+ lqe->lqe_edquot = false;
+ } else if (repbody != NULL && repbody->qb_qunit != 0) {
+ qsd_set_qunit(lqe, repbody->qb_qunit);
+ }
+
+ /* turn off pre-acquire if it failed with -EDQUOT. This is done to avoid
+ * flooding the master with acquire request. Pre-acquire will be turned
+ * on again as soon as qunit is modified */
+ if (req_is_preacq(reqbody->qb_flags) && ret == -EDQUOT)
+ lqe->lqe_nopreacq = true;
+out:
+ adjust = qsd_adjust_needed(lqe);
+out_noadjust:
+ lqe->lqe_pending_req--;
+ lqe->lqe_pending_rel = 0;
+ lqe_write_unlock(lqe);
+
+ cfs_waitq_broadcast(&lqe->lqe_waiters);
+
+ /* release reference on per-ID lock */
+ if (lustre_handle_is_used(lockh))
+ ldlm_lock_decref(lockh, qsd_id_einfo.ei_mode);
+
+ if (cancel) {
+ qsd_adjust_schedule(lqe, false, true);
+ } else if (adjust) {
+ if (!ret || ret == -EDQUOT)
+ qsd_adjust_schedule(lqe, false, false);
+ else
+ qsd_adjust_schedule(lqe, true, false);
+ }
+
+ if (lvb)
+ /* free lvb allocated in qsd_dqacq */
+ OBD_FREE_PTR(lvb);
+
+ lqe_putref(lqe);
+ EXIT;
+}
+
+static int qsd_acquire_local(struct lquota_entry *lqe, __u64 space)
+{
+ __u64 usage;
+ int rc;
+ ENTRY;
+
+ if (!lqe->lqe_enforced)
+ /* not enforced any more, we are good */
+ RETURN(0);
+
+ lqe_write_lock(lqe);
+ /* use latest usage */
+ usage = lqe->lqe_usage;
+ /* take pending write into account */
+ usage += lqe->lqe_pending_write;
+
+ if (space + usage <= lqe->lqe_granted - lqe->lqe_pending_rel) {
+ /* Yay! we got enough space */
+ lqe->lqe_pending_write += space;
+ lqe->lqe_waiting_write -= space;
+ rc = 0;
+ } else if (lqe->lqe_edquot) {
+ rc = -EDQUOT;
+ } else {
+ rc = -EAGAIN;
+ }
+ lqe_write_unlock(lqe);
+
+ RETURN(rc);
+}
+
+static bool qsd_calc_space(struct lquota_entry *lqe, enum qsd_ops op,
+ struct quota_body *qbody)
+{
+ struct qsd_qtype_info *qqi;
+ __u64 usage, granted;
+
+ if (!lqe->lqe_enforced && op != QSD_REL)
+ return 0;
+
+ qqi = lqe2qqi(lqe);
+
+ LASSERT(lqe->lqe_pending_rel == 0);
+ usage = lqe->lqe_usage;
+ usage += lqe->lqe_pending_write + lqe->lqe_waiting_write;
+ granted = lqe->lqe_granted;
+
+ qbody->qb_flags = 0;
+again:
+ switch (op) {
+ case QSD_ACQ:
+ /* if we overconsumed quota space, we report usage in request
+ * so that master can adjust it unconditionally */
+ if (lqe->lqe_usage > lqe->lqe_granted) {
+ qbody->qb_usage = lqe->lqe_usage;
+ qbody->qb_flags = QUOTA_DQACQ_FL_REPORT;
+ granted = lqe->lqe_usage;
+ }
+ /* acquire as much as needed, but not more */
+ if (usage > granted) {
+ qbody->qb_count = usage - granted;
+ qbody->qb_flags |= QUOTA_DQACQ_FL_ACQ;
+ }
+ break;
+ case QSD_REP:
+ /* When reporting quota (during reintegration or on setquota
+ * glimpse), we should release granted space if usage is 0.
+ * Otherwise, if the usage is less than granted, we need to
+ * acquire the per-ID lock to make sure the unused grant can be
+ * reclaimed by per-ID lock glimpse. */
+ if (lqe->lqe_usage == 0 && lqe->lqe_granted != 0) {
+ LQUOTA_DEBUG(lqe, "Release on report!");
+ GOTO(again, op = QSD_REL);
+ } else if (lqe->lqe_usage == lqe->lqe_granted) {
+ LQUOTA_DEBUG(lqe, "Usage matches granted, needn't do "
+ "anything on report!");
+ } else if (lqe->lqe_usage < lqe->lqe_granted) {
+ LQUOTA_DEBUG(lqe, "Acquire per-ID lock on report!");
+ qbody->qb_count = 0;
+ qbody->qb_flags = QUOTA_DQACQ_FL_ACQ;
+ } else {
+ LASSERT(lqe->lqe_usage > lqe->lqe_granted);
+ LQUOTA_DEBUG(lqe, "Reporting usage");
+ qbody->qb_usage = lqe->lqe_usage;
+ qbody->qb_flags = QUOTA_DQACQ_FL_REPORT;
+ }
+ break;
+ case QSD_REL:
+ /* release unused quota space unconditionally */
+ if (lqe->lqe_granted > lqe->lqe_usage) {
+ qbody->qb_count = lqe->lqe_granted - lqe->lqe_usage;
+ qbody->qb_flags = QUOTA_DQACQ_FL_REL;
+ }
+ break;
+ case QSD_ADJ: {
+ /* need to re-acquire per-ID lock or release all grant */
+ if (!lustre_handle_is_used(&lqe->lqe_lockh) &&
+ lqe->lqe_granted > lqe->lqe_usage)
+ GOTO(again, op = QSD_REP);
+
+ /* release spare grant */
+ if (granted > usage + lqe->lqe_qunit) {
+ /* pre-release quota space */
+ qbody->qb_count = granted - usage;
+ /* if usage == 0, release all granted space */
+ if (usage) {
+ /* try to keep one qunit of quota space */
+ qbody->qb_count -= lqe->lqe_qunit;
+ /* but don't release less than qtune to avoid
+ * releasing space too often */
+ if (qbody->qb_count < lqe->lqe_qtune)
+ qbody->qb_count = lqe->lqe_qtune;
+ }
+ qbody->qb_flags = QUOTA_DQACQ_FL_REL;
+ break;
+ }
+
+ /* if we overconsumed quota space, we report usage in request
+ * so that master can adjust it unconditionally */
+ if (lqe->lqe_usage > lqe->lqe_granted) {
+ qbody->qb_usage = lqe->lqe_usage;
+ qbody->qb_flags = QUOTA_DQACQ_FL_REPORT;
+ granted = lqe->lqe_usage;
+ }
+
+ if (!lqe->lqe_edquot && !lqe->lqe_nopreacq &&
+ lustre_handle_is_used(&lqe->lqe_lockh) &&
+ lqe->lqe_qunit != 0 && granted < usage + lqe->lqe_qtune) {
+ /* To pre-acquire quota space, we report how much spare
+ * quota space the slave currently owns, then the master
+ * will grant us back how much we can pretend given the
+ * current state of affairs */
+ if (granted <= usage)
+ qbody->qb_count = 0;
+ else
+ qbody->qb_count = granted - usage;
+ qbody->qb_flags |= QUOTA_DQACQ_FL_PREACQ;
+ }
+ break;
+ }
+ default:
+ CERROR("Invalid qsd operation:%u\n", op);
+ LBUG();
+ break;
+ }
+ return qbody->qb_flags != 0;
+}
+
+/*
+ * Acquire/release quota space from master.
+ * There are at most 1 in-flight dqacq/dqrel.
+ *
+ * \param env - the environment passed by the caller
+ * \param lqe - is the qid entry to be processed
+ * \param op - operation that want to be performed by the caller
+ *
+ * \retval 0 - success
+ * \retval -EDQUOT : out of quota
+ * -EINPROGRESS : inform client to retry write/create
+ * -ve : other appropriate errors
+ */
+int qsd_dqacq(const struct lu_env *env, struct lquota_entry *lqe,
+ enum qsd_ops op)
+{
+ struct qsd_thread_info *qti = qsd_info(env);
+ struct quota_body *qbody = &qti->qti_body;
+ struct qsd_instance *qsd;
+ struct qsd_qtype_info *qqi;
+ struct ldlm_lock *lock;
+ int rc;
+ bool intent = false, sync;
+ ENTRY;
+
+ qqi = lqe2qqi(lqe);
+ qsd = qqi->qqi_qsd;
+
+ if (qsd->qsd_stopping) {
+ LQUOTA_DEBUG(lqe, "Dropping quota req since qsd is stopping");
+ /* Target is about to shut down, client will retry */
+ RETURN(-EINPROGRESS);
+ }
+
+ if (!qsd_ready(qsd)) {
+ LQUOTA_DEBUG(lqe, "Connection to master not ready");
+ RETURN(-ENOTCONN);
+ }
+
+ /* In most case, reintegration must have been triggered (when enable
+ * quota or on OST start), however, in rare race condition (enabling
+ * quota when starting OSTs), we might miss triggering reintegration
+ * for some qqi.
+ *
+ * If the previous reintegration failed for some reason, we'll
+ * re-trigger it here as well. */
+ if (!qqi->qqi_glb_uptodate || !qqi->qqi_slv_uptodate) {
+ LQUOTA_DEBUG(lqe, "Not up-to-date, dropping request and kicking"
+ " off reintegration");
+ qsd_start_reint_thread(qqi);
+ RETURN(-EINPROGRESS);
+ }
+
+ LQUOTA_DEBUG(lqe, "DQACQ starts op=%u", op);
+
+ /* Fill the remote global lock handle, master will check this handle
+ * to see if the slave is sending request with stale lock */
+ cfs_read_lock(&qsd->qsd_lock);
+ lustre_handle_copy(&qbody->qb_glb_lockh, &qqi->qqi_lockh);
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ if (!lustre_handle_is_used(&qbody->qb_glb_lockh))
+ RETURN(-ENOLCK);
+
+ lock = ldlm_handle2lock(&qbody->qb_glb_lockh);
+ if (lock == NULL)
+ RETURN(-ENOLCK);
+ lustre_handle_copy(&qbody->qb_glb_lockh, &lock->l_remote_handle);
+ LDLM_LOCK_PUT(lock);
+
+ /* We allow only one in-flight dqacq/dqrel for specified qid, if
+ * there is already in-flight dqacq/dqrel:
+ *
+ * - For QSD_ADJ: we should just abort it, since local limit is going
+ * to be changed soon;
+ * - For QSD_ACQ & QSD_REL: we just wait for the in-flight dqacq/dqrel
+ * finished, and return success to the caller. The caller is
+ * responsible for retrying;
+ * - For QSD_REP: we should just abort it, since slave has already
+ * acquired/released grant; */
+ sync = (op == QSD_ACQ || op == QSD_REL) ? true : false;
+ LASSERTF(lqe->lqe_pending_req <= 1, "pending dqacq/dqrel:%d",
+ lqe->lqe_pending_req);
+
+ lqe_write_lock(lqe);
+ if (lqe->lqe_pending_req != 0) {
+ struct l_wait_info lwi = { 0 };
+
+ lqe_write_unlock(lqe);
+ if (!sync) {
+ LQUOTA_DEBUG(lqe, "Abort DQACQ, op=%d", op);
+ RETURN(0);
+ }
+
+ LQUOTA_DEBUG(lqe, "waiting for in-flight dqacq/dqrel");
+ l_wait_event(lqe->lqe_waiters,
+ !lqe_pending_dqacq(lqe) || qsd->qsd_stopping,
+ &lwi);
+ RETURN(0);
+ }
+
+ /* fill qb_count & qb_flags */
+ if (!qsd_calc_space(lqe, op, qbody)) {
+ lqe_write_unlock(lqe);
+ LQUOTA_DEBUG(lqe, "No DQACQ required, op=%u", op);
+ RETURN(0);
+ }
+ lqe->lqe_pending_req++;
+ lqe_write_unlock(lqe);
+
+ /* fill other quota body fields */
+ qbody->qb_fid = qqi->qqi_fid;
+ qbody->qb_id = lqe->lqe_id;
+ memset(&qbody->qb_lockh, 0, sizeof(qbody->qb_lockh));
+ memset(&qti->qti_lockh, 0, sizeof(qti->qti_lockh));
+
+ /* hold a refcount until completion */
+ lqe_getref(lqe);
+
+ if (req_is_acq(qbody->qb_flags) || req_is_preacq(qbody->qb_flags)) {
+ /* check whether we already own a lock for this ID */
+ lqe_read_lock(lqe);
+ lustre_handle_copy(&qti->qti_lockh, &lqe->lqe_lockh);
+ lqe_read_unlock(lqe);
+
+ rc = qsd_id_lock_match(&qti->qti_lockh, &qbody->qb_lockh);
+ if (rc) {
+ memset(&qti->qti_lockh, 0, sizeof(qti->qti_lockh));
+ if (req_is_preacq(qbody->qb_flags)) {
+ if (req_has_rep(qbody->qb_flags))
+ /* still want to report usage */
+ qbody->qb_flags = QUOTA_DQACQ_FL_REPORT;
+ else
+ /* no pre-acquire if no per-ID lock */
+ GOTO(out, rc = -ENOLCK);
+ } else {
+ /* no lock found, should use intent */
+ intent = true;
+ }
+ } else if (req_is_acq(qbody->qb_flags) &&
+ qbody->qb_count == 0) {
+ /* found cached lock, no need to acquire */
+ GOTO(out, rc = 0);
+ }
+ }
+
+ if (!intent) {
+ rc = qsd_send_dqacq(env, qsd->qsd_exp, qbody, sync,
+ qsd_dqacq_completion, qqi, &qti->qti_lockh,
+ lqe);
+ } else {
+ union ldlm_wire_lvb *lvb;
+
+ OBD_ALLOC_PTR(lvb);
+ if (lvb == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ rc = qsd_intent_lock(env, qsd->qsd_exp, qbody, sync,
+ IT_QUOTA_DQACQ, qsd_dqacq_completion,
+ qqi, lvb, (void *)lqe);
+ }
+ /* the completion function will be called by qsd_send_dqacq or
+ * qsd_intent_lock */
+ RETURN(rc);
+out:
+ qsd_dqacq_completion(env, qqi, qbody, NULL, &qti->qti_lockh, NULL, lqe,
+ rc);
+ return rc;
+}
+
+/*
+ * Quota enforcement handler. If local quota can satisfy this operation,
+ * return success, otherwise, acquire more quota from master.
+ * (for write operation, if master isn't available at this moment, return
+ * -EINPROGRESS to inform client to retry the write)
+ *
+ * \param env - the environment passed by the caller
+ * \param qsd - is the qsd instance associated with the device in charge
+ * of the operation.
+ * \param qid - is the qid information attached in the transaction handle
+ * \param space - is the space required by the operation
+ * \param flags - if the operation is write, return caller no user/group
+ * and sync commit flags
+ *
+ * \retval 0 - success
+ * \retval -EDQUOT : out of quota
+ * -EINPROGRESS : inform client to retry write
+ * -ve : other appropriate errors
+ */
+static int qsd_op_begin0(const struct lu_env *env, struct qsd_qtype_info *qqi,
+ struct lquota_id_info *qid, long long space,
+ int *flags)
+{
+ struct lquota_entry *lqe;
+ int rc = 0, retry_cnt;
+ ENTRY;
+
+ if (qid->lqi_qentry != NULL) {
+ /* we already had to deal with this id for this transaction */
+ lqe = qid->lqi_qentry;
+ if (!lqe->lqe_enforced)
+ RETURN(0);
+ } else {
+ /* look up lquota entry associated with qid */
+ lqe = lqe_locate(env, qqi->qqi_site, &qid->lqi_id);
+ if (IS_ERR(lqe))
+ RETURN(PTR_ERR(lqe));
+ if (!lqe->lqe_enforced) {
+ lqe_putref(lqe);
+ RETURN(0);
+ }
+ qid->lqi_qentry = lqe;
+ /* lqe will be released in qsd_op_end() */
+ }
+
+ if (space <= 0) {
+ /* when space is negative or null, we don't need to consume
+ * quota space. That said, we still want to perform space
+ * adjustments in qsd_op_end, so we return here, but with
+ * a reference on the lqe */
+ if (flags != NULL) {
+ rc = qsd_refresh_usage(env, lqe);
+ GOTO(out_flags, rc);
+ }
+ RETURN(0);
+ }
+
+ LQUOTA_DEBUG(lqe, "op_begin space:"LPD64, space);
+
+ lqe_write_lock(lqe);
+ lqe->lqe_waiting_write += space;
+ lqe_write_unlock(lqe);
+
+ for (retry_cnt = 0; rc == 0; retry_cnt++) {
+ /* refresh disk usage if required */
+ rc = qsd_refresh_usage(env, lqe);
+ if (rc)
+ break;
+
+ /* try to consume local quota space */
+ rc = qsd_acquire_local(lqe, space);
+ if (rc != -EAGAIN)
+ /* rc == 0, Wouhou! enough local quota space
+ * rc < 0, something bad happened */
+ break;
+
+ /* need to acquire more quota space from master, this is done
+ * synchronously */
+ rc = qsd_dqacq(env, lqe, QSD_ACQ);
+ LQUOTA_DEBUG(lqe, "Acquired quota space, retry cnt:%d rc:%d",
+ retry_cnt, rc);
+ }
+
+ if (rc == 0) {
+ qid->lqi_space += space;
+ } else {
+ LQUOTA_DEBUG(lqe, "Acquire quota failed:%d", rc);
+
+ lqe_write_lock(lqe);
+ lqe->lqe_waiting_write -= space;
+
+ if (flags && lqe->lqe_pending_write != 0)
+ /* Inform OSD layer that there are pending writes.
+ * It might want to retry after a sync if appropriate */
+ *flags |= QUOTA_FL_SYNC;
+ lqe_write_unlock(lqe);
+
+ /* convert recoverable error into -EINPROGRESS, and client will
+ * retry write on -EINPROGRESS. */
+ if (rc == -ETIMEDOUT || rc == -ENOTCONN || rc == -ENOLCK ||
+ rc == -EAGAIN || rc == -EINTR)
+ rc = -EINPROGRESS;
+ }
+
+ if (flags != NULL) {
+out_flags:
+ LASSERT(qid->lqi_is_blk);
+ if (rc != 0) {
+ *flags |= LQUOTA_OVER_FL(qqi->qqi_qtype);
+ } else {
+ __u64 usage;
+
+ lqe_read_lock(lqe);
+ usage = lqe->lqe_usage;
+ usage += lqe->lqe_pending_write;
+ usage += lqe->lqe_waiting_write;
+ usage += qqi->qqi_qsd->qsd_sync_threshold;
+
+ /* if we should notify client to start sync write */
+ if (usage >= lqe->lqe_granted - lqe->lqe_pending_rel)
+ *flags |= LQUOTA_OVER_FL(qqi->qqi_qtype);
+ else
+ *flags &= ~LQUOTA_OVER_FL(qqi->qqi_qtype);
+ lqe_read_unlock(lqe);
+ }
+ }
+ RETURN(rc);
+}
+
+static inline bool qid_equal(struct lquota_id_info *q1,
+ struct lquota_id_info *q2)
+{
+ if (q1->lqi_type != q2->lqi_type)
+ return false;
+ return (q1->lqi_id.qid_uid == q2->lqi_id.qid_uid) ? true : false;
+}
+
+/*
+ * Enforce quota, it's called in the declaration of each operation.
+ * qsd_op_end() will then be called later once all the operations have been
+ * completed in order to release/adjust the quota space.
+ *
+ * \param env - the environment passed by the caller
+ * \param qsd - is the qsd instance associated with the device in charge
+ * of the operation.
+ * \param trans - is the quota transaction information
+ * \param qi - qid & space required by current operation
+ * \param flags - if the operation is write, return caller no user/group
+ * and sync commit flags
+ *
+ * \retval 0 - success
+ * \retval -EDQUOT : out of quota
+ * -EINPROGRESS : inform client to retry write
+ * -ve : other appropriate errors
+ */
+int qsd_op_begin(const struct lu_env *env, struct qsd_instance *qsd,
+ struct lquota_trans *trans, struct lquota_id_info *qi,
+ int *flags)
+{
+ struct qsd_qtype_info *qqi;
+ int i, rc;
+ bool found = false;
+ ENTRY;
+
+ if (unlikely(qsd == NULL))
+ RETURN(0);
+
+ /* We don't enforce quota until the qsd_instance is started */
+ cfs_read_lock(&qsd->qsd_lock);
+ if (!qsd->qsd_started) {
+ cfs_read_unlock(&qsd->qsd_lock);
+ RETURN(0);
+ }
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ /* ignore block quota on MDTs, ignore inode quota on OSTs */
+ if ((!qsd->qsd_is_md && !qi->lqi_is_blk) ||
+ (qsd->qsd_is_md && qi->lqi_is_blk))
+ RETURN(0);
+
+ qqi = qsd->qsd_type_array[qi->lqi_type];
+
+ /* ignore quota enforcement request when:
+ * - quota isn't enforced for this quota type
+ * or - we failed to access the accounting object for this quota type
+ * or - the space to acquire is null
+ * or - the user/group is root */
+ if (!qsd_type_enabled(qsd, qi->lqi_type) || qqi->qqi_acct_obj == NULL ||
+ qi->lqi_id.qid_uid == 0)
+ RETURN(0);
+
+ LASSERTF(trans->lqt_id_cnt <= QUOTA_MAX_TRANSIDS, "id_cnt=%d",
+ trans->lqt_id_cnt);
+ /* check whether we already allocated a slot for this id */
+ for (i = 0; i < trans->lqt_id_cnt; i++) {
+ if (qid_equal(qi, &trans->lqt_ids[i])) {
+ found = true;
+ /* make sure we are not mixing inodes & blocks */
+ LASSERT(trans->lqt_ids[i].lqi_is_blk == qi->lqi_is_blk);
+ break;
+ }
+ }
+
+ if (!found) {
+ if (unlikely(i >= QUOTA_MAX_TRANSIDS)) {
+ CERROR("%s: more than %d qids enforced for a "
+ "transaction?\n", qsd->qsd_svname, i);
+ RETURN(-EINVAL);
+ }
+
+ /* fill new slot */
+ trans->lqt_ids[i].lqi_id = qi->lqi_id;
+ trans->lqt_ids[i].lqi_type = qi->lqi_type;
+ trans->lqt_ids[i].lqi_is_blk = qi->lqi_is_blk;
+ trans->lqt_id_cnt++;
+ }
+
+ /* manage quota enforcement for this ID */
+ rc = qsd_op_begin0(env, qqi, &trans->lqt_ids[i], qi->lqi_space, flags);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(qsd_op_begin);
+
+/**
+ * Post quota operation, pre-acquire/release quota from master.
+ *
+ * \param env - the environment passed by the caller
+ * \param qsd - is the qsd instance attached to the OSD device which
+ * is handling the operation.
+ * \param qqi - is the qsd_qtype_info structure associated with the quota ID
+ * subject to the operation
+ * \param qid - stores information related to his ID for the operation
+ * which has just completed
+ *
+ * \retval 0 - success
+ * \retval -ve - failure
+ */
+static void qsd_op_end0(const struct lu_env *env, struct qsd_qtype_info *qqi,
+ struct lquota_id_info *qid)
+{
+ struct lquota_entry *lqe;
+ bool adjust;
+ ENTRY;
+
+ lqe = qid->lqi_qentry;
+ if (lqe == NULL)
+ RETURN_EXIT;
+ qid->lqi_qentry = NULL;
+
+ /* refresh cached usage if a suitable environment is passed */
+ if (env != NULL)
+ qsd_refresh_usage(env, lqe);
+
+ lqe_write_lock(lqe);
+ if (qid->lqi_space > 0)
+ lqe->lqe_pending_write -= qid->lqi_space;
+ if (env != NULL)
+ adjust = qsd_adjust_needed(lqe);
+ else
+ adjust = true;
+ lqe_write_unlock(lqe);
+
+ if (adjust) {
+ /* pre-acquire/release quota space is needed */
+ if (env != NULL)
+ qsd_dqacq(env, lqe, QSD_ADJ);
+ else
+ /* no suitable environment, handle adjustment in
+ * separate thread context */
+ qsd_adjust_schedule(lqe, false, false);
+ }
+ lqe_putref(lqe);
+ EXIT;
+}
+
+/*
+ * Post quota operation. It's called after each operation transaction stopped.
+ *
+ * \param env - the environment passed by the caller
+ * \param qsd - is the qsd instance associated with device which is handling
+ * the operation.
+ * \param qids - all qids information attached in the transaction handle
+ * \param count - is the number of qid entries in the qids array.
+ *
+ * \retval 0 - success
+ * \retval -ve - failure
+ */
+void qsd_op_end(const struct lu_env *env, struct qsd_instance *qsd,
+ struct lquota_trans *trans)
+{
+ int i;
+ ENTRY;
+
+ if (unlikely(qsd == NULL))
+ RETURN_EXIT;
+
+ /* We don't enforce quota until the qsd_instance is started */
+ cfs_read_lock(&qsd->qsd_lock);
+ if (!qsd->qsd_started) {
+ cfs_read_unlock(&qsd->qsd_lock);
+ RETURN_EXIT;
+ }
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ LASSERT(trans != NULL);
+
+ for (i = 0; i < trans->lqt_id_cnt; i++) {
+ struct qsd_qtype_info *qqi;
+
+ if (trans->lqt_ids[i].lqi_qentry == NULL)
+ continue;
+
+ qqi = qsd->qsd_type_array[trans->lqt_ids[i].lqi_type];
+ qsd_op_end0(env, qqi, &trans->lqt_ids[i]);
+ }
+
+ /* reset id_count to 0 so that a second accidental call to qsd_op_end()
+ * does not result in failure */
+ trans->lqt_id_cnt = 0;
+ EXIT;
+}
+EXPORT_SYMBOL(qsd_op_end);
+
+void qsd_adjust_quota(const struct lu_env *env, struct qsd_instance *qsd,
+ union lquota_id *qid, int qtype)
+{
+ struct lquota_entry *lqe;
+ struct qsd_qtype_info *qqi;
+ bool adjust;
+ ENTRY;
+
+ if (unlikely(qsd == NULL))
+ RETURN_EXIT;
+
+ /* We don't enforce quota until the qsd_instance is started */
+ cfs_read_lock(&qsd->qsd_lock);
+ if (!qsd->qsd_started) {
+ cfs_read_unlock(&qsd->qsd_lock);
+ RETURN_EXIT;
+ }
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ qqi = qsd->qsd_type_array[qtype];
+ LASSERT(qqi);
+
+ if (!qsd_type_enabled(qsd, qtype) || qqi->qqi_acct_obj == NULL ||
+ qid->qid_uid == 0)
+ RETURN_EXIT;
+
+ cfs_read_lock(&qsd->qsd_lock);
+ if (!qsd->qsd_started) {
+ cfs_read_unlock(&qsd->qsd_lock);
+ RETURN_EXIT;
+ }
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ lqe = lqe_locate(env, qqi->qqi_site, qid);
+ if (IS_ERR(lqe)) {
+ CERROR("%s: fail to locate lqe for id:"LPU64", type:%d\n",
+ qsd->qsd_svname, qid->qid_uid, qtype);
+ RETURN_EXIT;
+ }
+
+ qsd_refresh_usage(env, lqe);
+
+ lqe_read_lock(lqe);
+ adjust = qsd_adjust_needed(lqe);
+ lqe_read_unlock(lqe);
+
+ if (adjust)
+ qsd_dqacq(env, lqe, QSD_ADJ);
+
+ lqe_putref(lqe);
+ EXIT;
+}
+EXPORT_SYMBOL(qsd_adjust_quota);
* are exported */
cfs_proc_dir_entry_t *qsd_proc;
+ /* export used for the connection to quota master */
+ struct obd_export *qsd_exp;
+
+ /* ldlm namespace used for quota locks */
+ struct ldlm_namespace *qsd_ns;
+
/* on-disk directory where to store index files for this qsd instance */
struct dt_object *qsd_root;
* future. For the time being, we can just use an array. */
struct qsd_qtype_info *qsd_type_array[MAXQUOTAS];
+ /* per-filesystem quota information */
+ struct qsd_fsinfo *qsd_fsinfo;
+
+ /* link into qfs_qsd_list of qfs_fsinfo */
+ cfs_list_t qsd_link;
+
+ /* list of lqe entry which might need quota space adjustment */
+ cfs_list_t qsd_adjust_list;
+
+ /* lock protecting adjust list */
+ cfs_spinlock_t qsd_adjust_lock;
+
+ /* dedicated thread for updating slave index files. */
+ struct ptlrpc_thread qsd_upd_thread;
+
+ /* list of update tasks */
+ cfs_list_t qsd_upd_list;
+
/* r/w spinlock protecting:
* - the state flags
* - the qsd update list
* - the deferred list
- * - flags of the qsd_qtype_info
- *
- * probably way too much :(
- */
+ * - flags of the qsd_qtype_info */
cfs_rwlock_t qsd_lock;
- /* per-filesystem quota information */
- struct qsd_fsinfo *qsd_fsinfo;
-
- /* link into qfs_qsd_list of qfs_fsinfo */
- cfs_list_t qsd_link;
+ /* Default quota settings which apply to all identifiers */
+ /* when blk qunit reaches this value, later write reqs from client
+ * should be sync. b=16642 */
+ unsigned long qsd_sync_threshold;
unsigned long qsd_is_md:1, /* managing quota for mdt */
+ qsd_started:1, /* instance is now started */
+ qsd_prepared:1, /* qsd_prepare() successfully
+ * called */
+ qsd_exp_valid:1,/* qsd_exp is now valid */
qsd_stopping:1; /* qsd_instance is stopping */
};
/* Global index FID to use for this quota type */
struct lu_fid qqi_fid;
+ /* Slave index FID allocated by the master */
+ struct lu_fid qqi_slv_fid;
+
/* back pointer to qsd device
* immutable after creation. */
struct qsd_instance *qqi_qsd;
__u64 qqi_slv_ver; /* slave index version */
__u64 qqi_glb_ver; /* global index version */
+ /* per quota ID information. All lquota entry are kept in a hash table
+ * and read from disk on cache miss. */
+ struct lquota_site *qqi_site;
+
+ /* Reintegration thread */
+ struct ptlrpc_thread qqi_reint_thread;
+
+ /* statistics on operations performed by this slave */
+ struct lprocfs_stats *qqi_stats;
+
+ /* deferred update for the global index copy */
+ cfs_list_t qqi_deferred_glb;
+ /* deferred update for the slave index copy */
+ cfs_list_t qqi_deferred_slv;
+
/* Various flags representing the current state of the slave for this
* quota type. */
unsigned long qqi_glb_uptodate:1, /* global index uptodate
#define QSD_RES_TYPE(qsd) ((qsd)->qsd_is_md ? LQUOTA_RES_MD : LQUOTA_RES_DT)
+/* udpate record for slave & global index copy */
+struct qsd_upd_rec {
+ cfs_list_t qur_link; /* link into qsd_upd_list */
+ union lquota_id qur_qid;
+ union lquota_rec qur_rec;
+ struct qsd_qtype_info *qur_qqi;
+ struct lquota_entry *qur_lqe;
+ __u64 qur_ver;
+ bool qur_global;
+};
+
/* Common data shared by qsd-level handlers. This is allocated per-thread to
* reduce stack consumption. */
struct qsd_thread_info {
lqe->lqe_nopreacq = false;
}
+#define QSD_WB_INTERVAL 15 /* 15 seconds */
+
/* qsd_entry.c */
extern struct lquota_entry_operations qsd_lqe_ops;
int qsd_refresh_usage(const struct lu_env *, struct lquota_entry *);
int qsd_process_config(struct lustre_cfg *);
/* qsd_handler.c */
-/* XXX to be replaced with real function once qsd_handler landed */
-static inline int qsd_dqacq(const struct lu_env *env, struct lquota_entry *lqe,
- enum qsd_ops op)
-{
- return 0;
-}
+int qsd_dqacq(const struct lu_env *, struct lquota_entry *, enum qsd_ops);
+__u64 qsd_calc_grants(struct lquota_entry *, __u64, __u32);
+/* qsd_writeback.c */
+void qsd_upd_schedule(struct qsd_qtype_info *, struct lquota_entry *,
+ union lquota_id *, union lquota_rec *, __u64, bool);
+void qsd_bump_version(struct qsd_qtype_info *, __u64, bool);
+int qsd_start_upd_thread(struct qsd_instance *);
+void qsd_stop_upd_thread(struct qsd_instance *);
+void qsd_adjust_schedule(struct lquota_entry *, bool, bool);
#endif /* _QSD_INTERNAL_H */
#include <obd_class.h>
#include "qsd_internal.h"
+cfs_mem_cache_t *upd_kmem;
+
+struct lu_kmem_descr qsd_caches[] = {
+ {
+ .ckd_cache = &upd_kmem,
+ .ckd_name = "upd_kmem",
+ .ckd_size = sizeof(struct qsd_upd_rec)
+ },
+ {
+ .ckd_cache = NULL
+ }
+};
+
/* define qsd thread key */
LU_KEY_INIT_FINI(qsd, struct qsd_thread_info);
LU_CONTEXT_KEY_DEFINE(qsd, LCT_MD_THREAD | LCT_DT_THREAD | LCT_LOCAL);
int count, int *eof, void *data)
{
struct qsd_instance *qsd = (struct qsd_instance *)data;
+ char enabled[5];
+ int rc;
LASSERT(qsd != NULL);
- return snprintf(page, count,
- "target name: %s\n"
- "pool ID: %d\n"
- "type: %s\n"
- "quota enabled: none\n",
- qsd->qsd_svname, qsd->qsd_pool_id,
- qsd->qsd_is_md ? "md" : "dt");
+ memset(enabled, 0, sizeof(enabled));
+ if (qsd_type_enabled(qsd, USRQUOTA))
+ strcat(enabled, "u");
+ if (qsd_type_enabled(qsd, GRPQUOTA))
+ strcat(enabled, "g");
+ if (strlen(enabled) == 0)
+ strcat(enabled, "none");
+
+ rc = snprintf(page, count,
+ "target name: %s\n"
+ "pool ID: %d\n"
+ "type: %s\n"
+ "quota enabled: %s\n"
+ "conn to master: %s\n",
+ qsd->qsd_svname, qsd->qsd_pool_id,
+ qsd->qsd_is_md ? "md" : "dt", enabled,
+ qsd->qsd_exp_valid ? "setup" : "not setup yet");
+
+ if (qsd->qsd_prepared)
+ rc += snprintf(page + rc, count - rc,
+ "user uptodate: glb[%d],slv[%d],reint[%d]\n"
+ "group uptodate: glb[%d],slv[%d],reint[%d]\n",
+ qsd->qsd_type_array[USRQUOTA]->qqi_glb_uptodate,
+ qsd->qsd_type_array[USRQUOTA]->qqi_slv_uptodate,
+ qsd->qsd_type_array[USRQUOTA]->qqi_reint,
+ qsd->qsd_type_array[GRPQUOTA]->qqi_glb_uptodate,
+ qsd->qsd_type_array[GRPQUOTA]->qqi_slv_uptodate,
+ qsd->qsd_type_array[GRPQUOTA]->qqi_reint);
+ return rc;
}
static int lprocfs_qsd_rd_enabled(char *page, char **start, off_t off,
};
/*
+ * Callback function invoked by the OSP layer when the connection to the master
+ * has been set up.
+ *
+ * \param data - is a pointer to the qsd_instance
+ *
+ * \retval - 0 on success, appropriate error on failure
+ */
+static int qsd_conn_callback(void *data)
+{
+ struct qsd_instance *qsd = (struct qsd_instance *)data;
+ int type;
+ ENTRY;
+
+ /* qsd_exp should now be valid */
+ LASSERT(qsd->qsd_exp);
+
+ /* grab reference on namespace */
+ ldlm_namespace_get(class_exp2obd(qsd->qsd_exp)->obd_namespace);
+ qsd->qsd_ns = class_exp2obd(qsd->qsd_exp)->obd_namespace;
+
+ cfs_write_lock(&qsd->qsd_lock);
+ /* notify that qsd_exp is now valid */
+ qsd->qsd_exp_valid = true;
+ cfs_write_unlock(&qsd->qsd_lock);
+
+ /* Now that the connection to master is setup, we can initiate the
+ * reintegration procedure for quota types which are enabled.
+ * It is worth noting that, if the qsd_instance hasn't been started
+ * already, then we can only complete the first two steps of the
+ * reintegration procedure (i.e. global lock enqueue and slave
+ * index transfer) since the space usage reconciliation (i.e.
+ * step 3) will have to wait for qsd_start() to be called */
+ for (type = USRQUOTA; type < MAXQUOTAS; type++) {
+ struct qsd_qtype_info *qqi = qsd->qsd_type_array[type];
+ cfs_waitq_signal(&qqi->qqi_reint_thread.t_ctl_waitq);
+ }
+
+ RETURN(0);
+}
+
+/*
* Release qsd_qtype_info structure which contains data associated with a
* given quota type. This releases the accounting objects.
* It's called on OSD cleanup when the qsd instance is released.
qqi = qsd->qsd_type_array[qtype];
qsd->qsd_type_array[qtype] = NULL;
+ /* all deferred work lists should be empty */
+ LASSERT(cfs_list_empty(&qqi->qqi_deferred_glb));
+ LASSERT(cfs_list_empty(&qqi->qqi_deferred_slv));
+
+ /* shutdown lquota site */
+ if (qqi->qqi_site != NULL && !IS_ERR(qqi->qqi_site)) {
+ lquota_site_free(env, qqi->qqi_site);
+ qqi->qqi_site = NULL;
+ }
+
/* by now, all qqi users should have gone away */
LASSERT(cfs_atomic_read(&qqi->qqi_ref) == 1);
lu_ref_fini(&qqi->qqi_reference);
qqi->qqi_glb_uptodate = false;
qqi->qqi_slv_uptodate = false;
qqi->qqi_reint = false;
+ cfs_waitq_init(&qqi->qqi_reint_thread.t_ctl_waitq);
+ thread_set_flags(&qqi->qqi_reint_thread, SVC_STOPPED);
+ CFS_INIT_LIST_HEAD(&qqi->qqi_deferred_glb);
+ CFS_INIT_LIST_HEAD(&qqi->qqi_deferred_slv);
memset(&qqi->qqi_lockh, 0, sizeof(qqi->qqi_lockh));
- /* open accounting object */
- LASSERT(qqi->qqi_acct_obj == NULL);
- qqi->qqi_acct_obj = acct_obj_lookup(env, qsd->qsd_dev,
- qtype == USRQUOTA ? ACCT_USER_OID
- : ACCT_GROUP_OID);
- /* don't print any error message on failure in order not to confuse
- * non-OFD user (e.g. 2.3 MDT stack) */
- if (IS_ERR(qqi->qqi_acct_obj))
- qqi->qqi_acct_obj = NULL;
+ /* open accounting object */
+ LASSERT(qqi->qqi_acct_obj == NULL);
+ qqi->qqi_acct_obj = acct_obj_lookup(env, qsd->qsd_dev, qtype);
+ if (qqi->qqi_acct_obj == NULL) {
+ LCONSOLE_ERROR("%s: No %s space accounting support. Please use "
+ "tunefs.lustre --quota option to enable quota "
+ "accounting.\n",
+ qsd->qsd_svname, QTYPE_NAME(qtype));
+ GOTO(out, rc = -ENOENT);
+ }
/* open global index copy */
LASSERT(qqi->qqi_glb_obj == NULL);
}
qqi->qqi_slv_ver = dt_version_get(env, qqi->qqi_slv_obj);
+ /* allocate site */
+ qqi->qqi_site = lquota_site_alloc(env, qqi, false, qtype, &qsd_lqe_ops);
+ if (IS_ERR(qqi->qqi_site)) {
+ CERROR("%s: can't allocate site "DFID" %ld\n", qsd->qsd_svname,
+ PFID(&qqi->qqi_fid), PTR_ERR(qqi->qqi_site));
+ GOTO(out, rc = PTR_ERR(qqi->qqi_site));
+ }
+
/* register proc entry for accounting object */
rc = lprocfs_seq_create(qsd->qsd_proc,
qtype == USRQUOTA ? "acct_user" : "acct_group",
0444, &lprocfs_quota_seq_fops,
qqi->qqi_acct_obj);
if (rc) {
- CWARN("%s: can't add procfs entry for accounting file %d\n",
- qsd->qsd_svname, rc);
+ CERROR("%s: can't add procfs entry for accounting file %d\n",
+ qsd->qsd_svname, rc);
GOTO(out, rc);
}
-
EXIT;
out:
if (rc)
/*
* Release a qsd_instance. Companion of qsd_init(). This releases all data
- * structures associated with the quota slave.
+ * structures associated with the quota slave (on-disk objects, lquota entry
+ * tables, ...).
* This function should be called when the OSD is shutting down.
*
* \param env - is the environment passed by the caller
ENTRY;
CDEBUG(D_QUOTA, "%s: initiating QSD shutdown\n", qsd->qsd_svname);
+ cfs_write_lock(&qsd->qsd_lock);
qsd->qsd_stopping = true;
+ cfs_write_unlock(&qsd->qsd_lock);
/* remove from the list of fsinfo */
if (!cfs_list_empty(&qsd->qsd_link)) {
qsd->qsd_proc = NULL;
}
+ /* stop the writeback thread */
+ qsd_stop_upd_thread(qsd);
+
+ /* shutdown the reintegration threads */
+ for (qtype = USRQUOTA; qtype < MAXQUOTAS; qtype++) {
+ if (qsd->qsd_type_array[qtype] == NULL)
+ continue;
+ qsd_stop_reint_thread(qsd->qsd_type_array[qtype]);
+ }
+
+ /* release reference on namespace */
+ if (qsd->qsd_ns != NULL) {
+ ldlm_namespace_put(qsd->qsd_ns);
+ qsd->qsd_ns = NULL;
+ }
+
/* free per-quota type data */
for (qtype = USRQUOTA; qtype < MAXQUOTAS; qtype++)
qsd_qtype_fini(env, qsd, qtype);
+ /* deregister connection to the quota master */
+ qsd->qsd_exp_valid = false;
+ lustre_deregister_osp_item(&qsd->qsd_exp);
+
/* release per-filesystem information */
if (qsd->qsd_fsinfo != NULL)
qsd_put_fsinfo(qsd->qsd_fsinfo);
qsd->qsd_dev = NULL;
}
+ CDEBUG(D_QUOTA, "%s: QSD shutdown completed\n", qsd->qsd_svname);
OBD_FREE_PTR(qsd);
EXIT;
}
if (qsd == NULL)
RETURN(ERR_PTR(-ENOMEM));
+ /* generic initializations */
cfs_rwlock_init(&qsd->qsd_lock);
CFS_INIT_LIST_HEAD(&qsd->qsd_link);
+ thread_set_flags(&qsd->qsd_upd_thread, SVC_STOPPED);
+ cfs_waitq_init(&qsd->qsd_upd_thread.t_ctl_waitq);
+ CFS_INIT_LIST_HEAD(&qsd->qsd_upd_list);
+ cfs_spin_lock_init(&qsd->qsd_adjust_lock);
+ CFS_INIT_LIST_HEAD(&qsd->qsd_adjust_list);
+ qsd->qsd_prepared = false;
+ qsd->qsd_started = false;
+
/* copy service name */
strncpy(qsd->qsd_svname, svname, MAX_OBD_NAME);
svname, rc);
GOTO(out, rc);
}
+ EXIT;
out:
if (rc) {
qsd_fini(env, qsd);
*/
int qsd_prepare(const struct lu_env *env, struct qsd_instance *qsd)
{
- int rc, qtype;
+ struct qsd_thread_info *qti = qsd_info(env);
+ int qtype, rc = 0;
ENTRY;
LASSERT(qsd != NULL);
+ cfs_read_lock(&qsd->qsd_lock);
+ if (qsd->qsd_prepared) {
+ CERROR("%s: qsd instance already prepared\n", qsd->qsd_svname);
+ rc = -EALREADY;
+ }
+ cfs_read_unlock(&qsd->qsd_lock);
+ if (rc)
+ RETURN(rc);
+
/* Record whether this qsd instance is managing quota enforcement for a
* MDT (i.e. inode quota) or OST (block quota) */
- if (lu_device_is_md(qsd->qsd_dev->dd_lu_dev.ld_site->ls_top_dev))
+ if (lu_device_is_md(qsd->qsd_dev->dd_lu_dev.ld_site->ls_top_dev)) {
qsd->qsd_is_md = true;
+ qsd->qsd_sync_threshold = LQUOTA_LEAST_QUNIT(LQUOTA_RES_MD);
+ } else {
+ qsd->qsd_sync_threshold = LQUOTA_LEAST_QUNIT(LQUOTA_RES_DT);
+ }
/* look-up on-disk directory for the quota slave */
qsd->qsd_root = lquota_disk_dir_find_create(env, qsd->qsd_dev, NULL,
RETURN(rc);
}
+ /* pools successfully setup, mark the qsd as prepared */
+ cfs_write_lock(&qsd->qsd_lock);
+ qsd->qsd_prepared = true;
+ cfs_write_unlock(&qsd->qsd_lock);
+
+ /* start reintegration thread for each type, if required */
+ for (qtype = USRQUOTA; qtype < MAXQUOTAS; qtype++) {
+ struct qsd_qtype_info *qqi = qsd->qsd_type_array[qtype];
+
+ rc = qsd_start_reint_thread(qqi);
+ if (rc) {
+ CERROR("%s: failed to start reint thread for type %s "
+ "(%d)\n", qsd->qsd_svname, QTYPE_NAME(qtype),
+ rc);
+ RETURN(rc);
+ }
+ }
+
+ /* start writeback thread */
+ rc = qsd_start_upd_thread(qsd);
+ if (rc) {
+ CERROR("%s: failed to start writeback thread (%d)\n",
+ qsd->qsd_svname, rc);
+ RETURN(rc);
+ }
+
+ /* generate osp name */
+ rc = tgt_name2ospname((char *)qsd->qsd_svname, qti->qti_buf);
+ if (rc) {
+ CERROR("%s: failed to generate ospname (%d)\n",
+ qsd->qsd_svname, rc);
+ RETURN(rc);
+ }
+
+ /* the connection callback will start the reintegration
+ * procedure if quota is enabled */
+ rc = lustre_register_osp_item(qti->qti_buf, &qsd->qsd_exp,
+ qsd_conn_callback, (void *)qsd);
+ if (rc) {
+ CERROR("%s: fail to get connection to master (%d)\n",
+ qsd->qsd_svname, rc);
+ RETURN(rc);
+ }
+
RETURN(0);
}
EXPORT_SYMBOL(qsd_prepare);
+/*
+ * Start a qsd instance. This will complete the last step of the reintegration
+ * procedure as soon as possible (provided that the master is reachable).
+ * This should be called when recovery has been completed and quota should now
+ * be enforced on every operations.
+ *
+ * \param env - the environment passed by the caller
+ * \param qsd - is the qsd instance associated with the osd device to start
+ */
+int qsd_start(const struct lu_env *env, struct qsd_instance *qsd)
+{
+ int type, rc = 0;
+ ENTRY;
+
+ cfs_write_lock(&qsd->qsd_lock);
+ if (!qsd->qsd_prepared) {
+ CERROR("%s: can't start qsd instance since it was properly "
+ "initialized\n", qsd->qsd_svname);
+ rc = -EFAULT;
+ } else if (qsd->qsd_started) {
+ CERROR("%s: qsd instance already started\n", qsd->qsd_svname);
+ rc = -EALREADY;
+ } else {
+ /* notify that the qsd_instance is now started */
+ qsd->qsd_started = true;
+ }
+ cfs_write_unlock(&qsd->qsd_lock);
+
+ if (rc)
+ RETURN(rc);
+
+ /* Trigger the 3rd step of reintegration: If usage > granted, acquire
+ * up to usage; If usage < granted, release down to usage. */
+ for (type = USRQUOTA; type < MAXQUOTAS; type++) {
+ struct qsd_qtype_info *qqi = qsd->qsd_type_array[type];
+ cfs_waitq_signal(&qqi->qqi_reint_thread.t_ctl_waitq);
+ }
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(qsd_start);
+
void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg));
/*
*/
int qsd_glb_init(void)
{
+ int rc;
+
+ rc = lu_kmem_init(qsd_caches);
+ if (rc)
+ return rc;
+
qsd_key_init_generic(&qsd_thread_key, NULL);
lu_context_key_register(&qsd_thread_key);
lustre_register_quota_process_config(qsd_process_config);
+
return 0;
}
void qsd_glb_fini(void)
{
lustre_register_quota_process_config(NULL);
+ lu_kmem_fini(qsd_caches);
lu_context_key_degister(&qsd_thread_key);
}
/* valid race */
GOTO(out, rc = -ELDLM_NO_LOCK_DATA);
- LCONSOLE_INFO("%s: glimpse on glb quota locks, id:"LPU64" ver:"LPU64
- " hard:" LPU64" soft:"LPU64"\n", qqi->qqi_qsd->qsd_svname,
- desc->gl_id.qid_uid, desc->gl_ver, desc->gl_hardlimit,
- desc->gl_softlimit);
+ CDEBUG(D_QUOTA, "%s: glimpse on glb quota locks, id:"LPU64" ver:"LPU64
+ " hard:" LPU64" soft:"LPU64"\n", qqi->qqi_qsd->qsd_svname,
+ desc->gl_id.qid_uid, desc->gl_ver, desc->gl_hardlimit,
+ desc->gl_softlimit);
if (desc->gl_ver == 0) {
CERROR("%s: invalid global index version "LPU64"\n",
/* valid race */
GOTO(out, rc = -ELDLM_NO_LOCK_DATA);
- LQUOTA_CONSOLE(lqe, "glimpse on quota locks, new qunit:"LPU64,
- desc->gl_qunit);
+ LQUOTA_DEBUG(lqe, "glimpse on quota locks, new qunit:"LPU64,
+ desc->gl_qunit);
qsd = lqe2qqi(lqe)->qqi_qsd;
if (space > 0) {
if (lqe->lqe_pending_req > 0) {
- LQUOTA_ERROR(lqe, "request in flight, postpone "
+ LQUOTA_DEBUG(lqe, "request in flight, postpone "
"release of "LPD64, space);
lvb->lvb_id_may_rel = space;
} else {
lqe->lqe_pending_req++;
/* release quota space in glimpse reply */
- LQUOTA_ERROR(lqe, "releasing "LPD64, space);
+ LQUOTA_DEBUG(lqe, "releasing "LPD64, space);
lqe->lqe_granted -= space;
lvb->lvb_id_rel = space;
#include "qsd_internal.h"
+/*
+ * Completion function invoked when the global quota lock enqueue has completed
+ */
+static void qsd_reint_completion(const struct lu_env *env,
+ struct qsd_qtype_info *qqi,
+ struct quota_body *req_qbody,
+ struct quota_body *rep_qbody,
+ struct lustre_handle *lockh,
+ union ldlm_wire_lvb *lvb,
+ void *arg, int rc)
+{
+ struct qsd_instance *qsd = qqi->qqi_qsd;
+ __u64 *slv_ver = (__u64 *)arg;
+ ENTRY;
+
+ if (rc) {
+ CERROR("%s: failed to enqueue global quota lock, glb "
+ "fid:"DFID", rc:%d\n", qsd->qsd_svname,
+ PFID(&req_qbody->qb_fid), rc);
+ RETURN_EXIT;
+ }
+
+ CDEBUG(D_QUOTA, "%s: global quota lock successfully acquired, glb "
+ "fid:"DFID", glb ver:"LPU64", slv fid:"DFID", slv ver:"LPU64"\n",
+ qsd->qsd_svname, PFID(&req_qbody->qb_fid),
+ lvb->l_lquota.lvb_glb_ver, PFID(&rep_qbody->qb_slv_fid),
+ rep_qbody->qb_slv_ver);
+
+ *slv_ver = rep_qbody->qb_slv_ver;
+ memcpy(&qqi->qqi_slv_fid, &rep_qbody->qb_slv_fid,
+ sizeof(struct lu_fid));
+ lustre_handle_copy(&qqi->qqi_lockh, lockh);
+ EXIT;
+}
+
+static int qsd_reint_qid(const struct lu_env *env, struct qsd_qtype_info *qqi,
+ bool global, union lquota_id *qid, void *rec)
+{
+ struct lquota_entry *lqe;
+ int rc;
+ ENTRY;
+
+ lqe = lqe_locate(env, qqi->qqi_site, qid);
+ if (IS_ERR(lqe))
+ RETURN(PTR_ERR(lqe));
+
+ rc = qsd_update_lqe(env, lqe, global, rec);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = qsd_update_index(env, qqi, qid, global, 0, rec);
+out:
+ lqe_putref(lqe);
+ RETURN(rc);
+}
+
+static int qsd_reint_entries(const struct lu_env *env,
+ struct qsd_qtype_info *qqi,
+ struct idx_info *ii, bool global,
+ cfs_page_t **pages,
+ unsigned int npages, bool need_swab)
+{
+ struct qsd_thread_info *qti = qsd_info(env);
+ union lquota_id *qid = &qti->qti_id;
+ int i, j, k, size;
+ int rc = 0;
+ ENTRY;
+
+ /* sanity check on the record size */
+ if ((global && ii->ii_recsize != sizeof(struct lquota_glb_rec)) ||
+ (!global && ii->ii_recsize != sizeof(struct lquota_slv_rec))) {
+ CERROR("Invalid record size:%d, global:%s\n",
+ ii->ii_recsize, global ? "true" : "false");
+ RETURN(-EINVAL);
+ }
+
+ size = ii->ii_recsize + ii->ii_keysize + sizeof(__u64);
+
+ for (i = 0; i < npages; i++) {
+ union lu_page *lip = cfs_kmap(pages[i]);
+
+ for (j = 0; j < LU_PAGE_COUNT; j++) {
+ for (k = 0; k < lip->lp_idx.lip_nr; k++) {
+ char *entry;
+
+ entry = lip->lp_idx.lip_entries + k * size;
+ memcpy(qid, entry, ii->ii_keysize); /* key */
+ entry += ii->ii_keysize; /* value */
+
+ if (need_swab) {
+ int offset = 0;
+
+ /* swab key */
+ __swab64s(&qid->qid_uid);
+ /* quota records only include 64-bit
+ * fields */
+ while (offset < ii->ii_recsize) {
+ __swab64s((__u64 *)
+ (entry + offset));
+ offset += sizeof(__u64);
+ }
+ }
+
+ rc = qsd_reint_qid(env, qqi, global, qid,
+ (void *)entry);
+ if (rc)
+ GOTO(out, rc);
+ }
+ lip++;
+ }
+out:
+ cfs_kunmap(pages[i]);
+ if (rc)
+ break;
+ }
+ RETURN(rc);
+}
+
+static int qsd_reint_index(const struct lu_env *env, struct qsd_qtype_info *qqi,
+ bool global)
+{
+ struct qsd_thread_info *qti = qsd_info(env);
+ struct qsd_instance *qsd = qqi->qqi_qsd;
+ struct idx_info *ii = &qti->qti_ii;
+ struct lu_fid *fid;
+ cfs_page_t **pages = NULL;
+ unsigned int npages, pg_cnt;
+ __u64 start_hash = 0, ver = 0;
+ bool need_swab = false;
+ int i, rc;
+ ENTRY;
+
+ fid = global ? &qqi->qqi_fid : &qqi->qqi_slv_fid;
+
+ /* let's do a 1MB bulk */
+ npages = min_t(unsigned int, PTLRPC_MAX_BRW_SIZE, 1 << 20);
+ npages /= CFS_PAGE_SIZE;
+
+ /* allocate pages for bulk index read */
+ OBD_ALLOC(pages, npages * sizeof(*pages));
+ if (pages == NULL)
+ GOTO(out, rc = -ENOMEM);
+ for (i = 0; i < npages; i++) {
+ pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
+ if (pages[i] == NULL)
+ GOTO(out, rc = -ENOMEM);
+ }
+
+repeat:
+ /* initialize index_info request with FID of global index */
+ memset(ii, 0, sizeof(*ii));
+ memcpy(&ii->ii_fid, fid, sizeof(*fid));
+ ii->ii_magic = IDX_INFO_MAGIC;
+ ii->ii_flags = II_FL_NOHASH;
+ ii->ii_count = npages * LU_PAGE_COUNT;
+ ii->ii_hash_start = start_hash;
+
+ /* send bulk request to quota master to read global index */
+ rc = qsd_fetch_index(env, qsd->qsd_exp, ii, npages, pages, &need_swab);
+ if (rc) {
+ CWARN("%s: failed to fetch index for "DFID". %d\n",
+ qsd->qsd_svname, PFID(fid), rc);
+ GOTO(out, rc);
+ }
+
+ /* various sanity checks */
+ if (ii->ii_magic != IDX_INFO_MAGIC) {
+ CERROR("%s: invalid magic in index transfer %x != %x\n",
+ qsd->qsd_svname, ii->ii_magic, IDX_INFO_MAGIC);
+ GOTO(out, rc = -EPROTO);
+ }
+ if ((ii->ii_flags & II_FL_VARKEY) != 0)
+ CWARN("%s: II_FL_VARKEY is set on index transfer for fid "DFID
+ ", it shouldn't be\n", qsd->qsd_svname, PFID(fid));
+ if ((ii->ii_flags & II_FL_NONUNQ) != 0)
+ CWARN("%s: II_FL_NONUNQ is set on index transfer for fid "DFID
+ ", it shouldn't be\n", qsd->qsd_svname, PFID(fid));
+ if (ii->ii_keysize != sizeof(__u64)) {
+ CERROR("%s: invalid key size reported on index transfer for "
+ "fid "DFID", %u != %u\n", qsd->qsd_svname, PFID(fid),
+ ii->ii_keysize, (int)sizeof(__u64));
+ GOTO(out, rc = -EPROTO);
+ }
+ if (ii->ii_version == 0 && ii->ii_count != 0)
+ CWARN("%s: index version for fid "DFID" is 0, but index isn't "
+ "empty (%d)\n", qsd->qsd_svname, PFID(fid), ii->ii_count);
+
+ CDEBUG(D_QUOTA, "%s: reintegration process for fid "DFID" successfully "
+ "fetched %s index, count = %d\n", qsd->qsd_svname,
+ PFID(fid), global ? "global" : "slave", ii->ii_count);
+
+ if (start_hash == 0)
+ /* record version associated with the first bulk transfer */
+ ver = ii->ii_version;
+
+ pg_cnt = (ii->ii_count + (LU_PAGE_COUNT) - 1);
+ pg_cnt >>= CFS_PAGE_SHIFT - LU_PAGE_SHIFT;
+
+ if (pg_cnt > npages) {
+ CERROR("%s: master returned more pages than expected, %u > %u"
+ "\n", qsd->qsd_svname, pg_cnt, npages);
+ pg_cnt = npages;
+ }
+
+ rc = qsd_reint_entries(env, qqi, ii, global, pages, pg_cnt, need_swab);
+ if (rc)
+ GOTO(out, rc);
+
+ if (ii->ii_hash_end != II_END_OFF) {
+ start_hash = ii->ii_hash_end;
+ goto repeat;
+ }
+out:
+ if (pages != NULL) {
+ for (i = 0; i < npages; i++)
+ if (pages[i] != NULL)
+ cfs_free_page(pages[i]);
+ OBD_FREE(pages, npages * sizeof(*pages));
+ }
+
+ /* Update index version */
+ if (rc == 0) {
+ rc = qsd_write_version(env, qqi, ver, global);
+ if (rc)
+ CERROR("%s: write version "LPU64" to "DFID" failed. "
+ "%d\n", qsd->qsd_svname, ver, PFID(fid), rc);
+ }
+
+ RETURN(rc);
+}
+
+static int qsd_reconciliation(const struct lu_env *env,
+ struct qsd_qtype_info *qqi)
+{
+ struct qsd_thread_info *qti = qsd_info(env);
+ struct qsd_instance *qsd = qqi->qqi_qsd;
+ const struct dt_it_ops *iops;
+ struct dt_it *it;
+ struct dt_key *key;
+ struct lquota_entry *lqe;
+ union lquota_id *qid = &qti->qti_id;
+ int rc;
+ ENTRY;
+
+ LASSERT(qqi->qqi_glb_obj != NULL);
+ iops = &qqi->qqi_glb_obj->do_index_ops->dio_it;
+
+ it = iops->init(env, qqi->qqi_glb_obj, 0, BYPASS_CAPA);
+ if (IS_ERR(it)) {
+ CWARN("%s: Initialize it for "DFID" failed. %ld\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid), PTR_ERR(it));
+ RETURN(PTR_ERR(it));
+ }
+
+ rc = iops->load(env, it, 0);
+ if (rc < 0) {
+ CWARN("%s: Load first entry for "DFID" failed. %d\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid), rc);
+ GOTO(out, rc);
+ } else if (rc == 0) {
+ rc = iops->next(env, it);
+ if (rc != 0)
+ GOTO(out, rc = (rc < 0) ? rc : 0);
+ }
+
+ do {
+ key = iops->key(env, it);
+ if (IS_ERR(key)) {
+ CWARN("%s: Error key for "DFID". %ld\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid),
+ PTR_ERR(key));
+ GOTO(out, rc = PTR_ERR(key));
+ }
+
+ /* skip the root user/group */
+ if (*((__u64 *)key) == 0)
+ goto next;
+
+ qid->qid_uid = *((__u64 *)key);
+
+ lqe = lqe_locate(env, qqi->qqi_site, qid);
+ if (IS_ERR(lqe)) {
+ CWARN("%s: Fail to locate lqe. "DFID", %ld\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid),
+ PTR_ERR(lqe));
+ GOTO(out, rc = PTR_ERR(lqe));
+ }
+
+ if (!lqe->lqe_enforced) {
+ lqe_putref(lqe);
+ goto next;
+ }
+
+ rc = qsd_refresh_usage(env, lqe);
+ if (rc) {
+ CWARN("%s: Fail to get usage. "DFID", %d\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid), rc);
+ lqe_putref(lqe);
+ GOTO(out, rc);
+ }
+
+ rc = qsd_dqacq(env, lqe, QSD_REP);
+ lqe_putref(lqe);
+
+ if (rc) {
+ CWARN("%s: Fail to report quota. "DFID", %d\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid), rc);
+ GOTO(out, rc);
+ }
+next:
+ rc = iops->next(env, it);
+ if (rc < 0)
+ CWARN("%s: Error next "DFID". %d\n", qsd->qsd_svname,
+ PFID(&qqi->qqi_fid), rc);
+ } while (rc == 0);
+
+ /* reach the end */
+ if (rc > 0)
+ rc = 0;
+out:
+ iops->put(env, it);
+ iops->fini(env, it);
+ RETURN(rc);
+}
+
+static int qsd_connected(struct qsd_instance *qsd)
+{
+ int connected;
+
+ cfs_read_lock(&qsd->qsd_lock);
+ connected = qsd->qsd_exp_valid ? 1 : 0;
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ return connected;
+}
+
+static int qsd_started(struct qsd_instance *qsd)
+{
+ int started;
+
+ cfs_read_lock(&qsd->qsd_lock);
+ started = qsd->qsd_started ? 1 : 0;
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ return started;
+}
+
+/*
+ * Routine executed by the reintegration thread.
+ */
+static int qsd_reint_main(void *args)
+{
+ struct lu_env *env;
+ struct qsd_thread_info *qti;
+ struct qsd_qtype_info *qqi = (struct qsd_qtype_info *)args;
+ struct qsd_instance *qsd = qqi->qqi_qsd;
+ struct ptlrpc_thread *thread = &qqi->qqi_reint_thread;
+ struct l_wait_info lwi = { 0 };
+ int rc;
+ ENTRY;
+
+ cfs_daemonize("qsd_reint");
+
+ CDEBUG(D_QUOTA, "%s: Starting reintegration thread for "DFID"\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid));
+
+ qqi_getref(qqi);
+ lu_ref_add(&qqi->qqi_reference, "reint_thread", thread);
+
+ thread_set_flags(thread, SVC_RUNNING);
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+
+ OBD_ALLOC_PTR(env);
+ if (env == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ /* initialize environment */
+ rc = lu_env_init(env, LCT_DT_THREAD);
+ if (rc)
+ GOTO(out_env, rc);
+ qti = qsd_info(env);
+
+ /* wait for the connection to master established */
+ l_wait_event(thread->t_ctl_waitq,
+ qsd_connected(qsd) || !thread_is_running(thread), &lwi);
+
+ /* Step 1: enqueue global index lock */
+ if (!thread_is_running(thread))
+ GOTO(out_env_init, rc = 0);
+
+ LASSERT(qsd->qsd_exp != NULL);
+ LASSERT(qqi->qqi_glb_uptodate == 0 || qqi->qqi_slv_uptodate == 0);
+
+ memset(&qti->qti_lvb, 0, sizeof(qti->qti_lvb));
+
+ cfs_read_lock(&qsd->qsd_lock);
+ /* check whether we already own a global quota lock for this type */
+ if (lustre_handle_is_used(&qqi->qqi_lockh) &&
+ ldlm_lock_addref_try(&qqi->qqi_lockh, qsd_glb_einfo.ei_mode) == 0) {
+ cfs_read_unlock(&qsd->qsd_lock);
+ /* force refresh of global & slave index copy */
+ qti->qti_lvb.l_lquota.lvb_glb_ver = ~0ULL;
+ qti->qti_slv_ver = ~0ULL;
+ } else {
+ /* no valid lock found, let's enqueue a new one */
+ cfs_read_unlock(&qsd->qsd_lock);
+
+ memset(&qti->qti_body, 0, sizeof(qti->qti_body));
+ memcpy(&qti->qti_body.qb_fid, &qqi->qqi_fid,
+ sizeof(qqi->qqi_fid));
+
+ rc = qsd_intent_lock(env, qsd->qsd_exp, &qti->qti_body, true,
+ IT_QUOTA_CONN, qsd_reint_completion, qqi,
+ &qti->qti_lvb, (void *)&qti->qti_slv_ver);
+ if (rc)
+ GOTO(out_env_init, rc);
+
+ CDEBUG(D_QUOTA, "%s: glb_ver:"LPU64"/"LPU64",slv_ver:"LPU64"/"
+ LPU64"\n", qsd->qsd_svname,
+ qti->qti_lvb.l_lquota.lvb_glb_ver, qqi->qqi_glb_ver,
+ qti->qti_slv_ver, qqi->qqi_slv_ver);
+ }
+
+ /* Step 2: reintegrate global index */
+ if (!thread_is_running(thread))
+ GOTO(out_lock, rc = 0);
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_QUOTA_DELAY_REINT, 10);
+
+ if (qqi->qqi_glb_ver != qti->qti_lvb.l_lquota.lvb_glb_ver) {
+ rc = qsd_reint_index(env, qqi, true);
+ if (rc) {
+ CWARN("%s: reint global for "DFID" failed. %d\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_fid), rc);
+ GOTO(out_lock, rc);
+ }
+ } else {
+ qsd_bump_version(qqi, qqi->qqi_glb_ver, true);
+ }
+
+ /* Step 3: reintegrate slave index */
+ if (!thread_is_running(thread))
+ GOTO(out_lock, rc = 0);
+
+ if (qqi->qqi_slv_ver != qti->qti_slv_ver) {
+ rc = qsd_reint_index(env, qqi, false);
+ if (rc) {
+ CWARN("%s: Reint slave for "DFID" failed. %d\n",
+ qsd->qsd_svname, PFID(&qqi->qqi_slv_fid), rc);
+ GOTO(out_lock, rc);
+ }
+ } else {
+ qsd_bump_version(qqi, qqi->qqi_slv_ver, false);
+ }
+
+ /* wait for the connection to master established */
+ l_wait_event(thread->t_ctl_waitq,
+ qsd_started(qsd) || !thread_is_running(thread), &lwi);
+
+ if (!thread_is_running(thread))
+ GOTO(out_lock, rc = 0);
+
+ /* Step 4: start reconciliation for each enforced ID */
+ rc = qsd_reconciliation(env, qqi);
+ if (rc)
+ CWARN("%s: reconciliation failed. "DFID", %d\n",
+ qsd->qsd_svname, PFID(&qti->qti_fid), rc);
+
+ EXIT;
+out_lock:
+ ldlm_lock_decref(&qqi->qqi_lockh, qsd_glb_einfo.ei_mode);
+out_env_init:
+ lu_env_fini(env);
+out_env:
+ OBD_FREE_PTR(env);
+out:
+ cfs_write_lock(&qsd->qsd_lock);
+ qqi->qqi_reint = 0;
+ cfs_write_unlock(&qsd->qsd_lock);
+
+ qqi_putref(qqi);
+ lu_ref_del(&qqi->qqi_reference, "reint_thread", thread);
+
+ thread_set_flags(thread, SVC_STOPPED);
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+ return rc;
+}
+
void qsd_stop_reint_thread(struct qsd_qtype_info *qqi)
{
+ struct ptlrpc_thread *thread = &qqi->qqi_reint_thread;
+ struct l_wait_info lwi = { 0 };
+
+ if (!thread_is_stopped(thread)) {
+ thread_set_flags(thread, SVC_STOPPING);
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+
+ l_wait_event(thread->t_ctl_waitq,
+ thread_is_stopped(thread), &lwi);
+ }
}
int qsd_start_reint_thread(struct qsd_qtype_info *qqi)
{
+ struct ptlrpc_thread *thread = &qqi->qqi_reint_thread;
+ struct qsd_instance *qsd = qqi->qqi_qsd;
+ struct l_wait_info lwi = { 0 };
+ int rc;
+ ENTRY;
+
+ /* don't bother to do reintegration when quota isn't enabled */
+ if (!qsd_type_enabled(qqi->qqi_qsd, qqi->qqi_qtype))
+ RETURN(0);
+
+ /* check if the reintegration has already started or finished */
+ cfs_write_lock(&qsd->qsd_lock);
+
+ if ((qqi->qqi_glb_uptodate && qqi->qqi_slv_uptodate) ||
+ qqi->qqi_reint || qsd->qsd_stopping) {
+ cfs_write_unlock(&qsd->qsd_lock);
+ RETURN(0);
+ }
+ qqi->qqi_reint = 1;
+
+ cfs_write_unlock(&qsd->qsd_lock);
+
+ rc = cfs_create_thread(qsd_reint_main, (void *)qqi, 0);
+ if (rc < 0) {
+ thread_set_flags(thread, SVC_STOPPED);
+ cfs_write_lock(&qsd->qsd_lock);
+ qqi->qqi_reint = 0;
+ cfs_write_unlock(&qsd->qsd_lock);
+ RETURN(rc);
+ }
+
+ l_wait_event(thread->t_ctl_waitq,
+ thread_is_running(thread) || thread_is_stopped(thread),
+ &lwi);
RETURN(0);
}
req->rq_bulk->bd_nob_transferred);
if (rc < 0)
GOTO(out, rc);
+ rc = 0;
req_ii = req_capsule_server_get(&req->rq_pill, &RMF_IDX_INFO);
*ii = *req_ii;
#include "qsd_internal.h"
+extern cfs_mem_cache_t *upd_kmem;
+
+/*
+ * Allocate and fill an qsd_upd_rec structure to be processed by the writeback
+ * thread.
+ *
+ * \param qqi - is the qsd_qtype_info structure relevant to the update
+ * \param lqe - is the lquota entry subject to the update
+ * \param qid - is the identifier subject to the update
+ * \param rec - is the record storing the new quota settings
+ * \param ver - is the version associated with the update
+ * \param global - is a boolean set to true if this is an update of the global
+ * index and false for a slave index.
+ */
+static struct qsd_upd_rec *qsd_upd_alloc(struct qsd_qtype_info *qqi,
+ struct lquota_entry *lqe,
+ union lquota_id *qid,
+ union lquota_rec *rec, __u64 ver,
+ bool global)
+{
+ struct qsd_upd_rec *upd;
+
+ OBD_SLAB_ALLOC_PTR_GFP(upd, upd_kmem, CFS_ALLOC_IO);
+ if (upd == NULL) {
+ CERROR("Failed to allocate upd");
+ return NULL;
+ }
+
+ /* fill it */
+ CFS_INIT_LIST_HEAD(&upd->qur_link);
+ upd->qur_qqi = qqi;
+ upd->qur_lqe = lqe;
+ if (lqe)
+ lqe_getref(lqe);
+ upd->qur_qid = *qid;
+ upd->qur_rec = *rec;
+ upd->qur_ver = ver;
+ upd->qur_global = global;
+
+ return upd;
+}
+
+static void qsd_upd_free(struct qsd_upd_rec *upd)
+{
+ if (upd->qur_lqe)
+ lqe_putref(upd->qur_lqe);
+ OBD_SLAB_FREE_PTR(upd, upd_kmem);
+}
+
+/* must hold the qsd_lock */
+static void qsd_upd_add(struct qsd_instance *qsd, struct qsd_upd_rec *upd)
+{
+ if (!qsd->qsd_stopping) {
+ list_add_tail(&upd->qur_link, &qsd->qsd_upd_list);
+ /* wake up the upd thread */
+ cfs_waitq_signal(&qsd->qsd_upd_thread.t_ctl_waitq);
+ } else {
+ CWARN("%s: discard deferred update.\n", qsd->qsd_svname);
+ if (upd->qur_lqe)
+ LQUOTA_WARN(upd->qur_lqe, "discard deferred update.");
+ qsd_upd_free(upd);
+ }
+}
+
+/* must hold the qsd_lock */
+static void qsd_add_deferred(cfs_list_t *list, struct qsd_upd_rec *upd)
+{
+ struct qsd_upd_rec *tmp;
+
+ /* Sort the updates in ascending order */
+ cfs_list_for_each_entry_reverse(tmp, list, qur_link) {
+
+ LASSERTF(upd->qur_ver != tmp->qur_ver, "ver:"LPU64"\n",
+ upd->qur_ver);
+
+ if (upd->qur_ver < tmp->qur_ver) {
+ continue;
+ } else {
+ cfs_list_add_tail(&upd->qur_link, &tmp->qur_link);
+ return;
+ }
+ }
+ cfs_list_add(&upd->qur_link, list);
+}
+
+/* must hold the qsd_lock */
+static void qsd_kickoff_deferred(struct qsd_qtype_info *qqi, cfs_list_t *list,
+ __u64 ver)
+{
+ struct qsd_upd_rec *upd, *tmp;
+ ENTRY;
+
+ /* Get the first update record in the list, which has the smallest
+ * version, discard all records with versions smaller than the current
+ * one */
+ cfs_list_for_each_entry_safe(upd, tmp, list, qur_link) {
+ if (upd->qur_ver <= ver) {
+ /* drop this update */
+ cfs_list_del_init(&upd->qur_link);
+ CDEBUG(D_QUOTA, "%s: skipping deferred update ver:"
+ LPU64"/"LPU64", global:%d, qid:"LPU64"\n",
+ qqi->qqi_qsd->qsd_svname, upd->qur_ver, ver,
+ upd->qur_global, upd->qur_qid.qid_uid);
+ qsd_upd_free(upd);
+ } else {
+ break;
+ }
+ }
+
+ /* No remaining deferred update */
+ if (cfs_list_empty(list))
+ RETURN_EXIT;
+
+ CDEBUG(D_QUOTA, "%s: found deferred update record. "
+ "version:"LPU64"/"LPU64", global:%d, qid:"LPU64"\n",
+ qqi->qqi_qsd->qsd_svname, upd->qur_ver, ver,
+ upd->qur_global, upd->qur_qid.qid_uid);
+
+ LASSERTF(upd->qur_ver > ver, "lur_ver:"LPU64", cur_ver:"LPU64"\n",
+ upd->qur_ver, ver);
+
+ /* Kick off the deferred udpate */
+ if (upd->qur_ver == ver + 1) {
+ list_del_init(&upd->qur_link);
+ qsd_upd_add(qqi->qqi_qsd, upd);
+ }
+ EXIT;
+}
+
/* Bump version of global or slave index copy
*
* \param qqi - qsd_qtype_info
*/
void qsd_bump_version(struct qsd_qtype_info *qqi, __u64 ver, bool global)
{
+ cfs_list_t *list;
+ __u64 *idx_ver;
+
+ idx_ver = global ? &qqi->qqi_glb_ver : &qqi->qqi_slv_ver;
+ list = global ? &qqi->qqi_deferred_glb : &qqi->qqi_deferred_slv;
+
+ cfs_write_lock(&qqi->qqi_qsd->qsd_lock);
+ *idx_ver = ver;
+ if (global)
+ qqi->qqi_glb_uptodate = 1;
+ else
+ qqi->qqi_slv_uptodate = 1;
+ qsd_kickoff_deferred(qqi, list, ver);
+ cfs_write_unlock(&qqi->qqi_qsd->qsd_lock);
}
/*
union lquota_id *qid, union lquota_rec *rec, __u64 ver,
bool global)
{
+ struct qsd_upd_rec *upd;
+ struct qsd_instance *qsd = qqi->qqi_qsd;
+ __u64 cur_ver;
+ ENTRY;
+
+ CDEBUG(D_QUOTA, "%s: schedule update. global:%s, version:"LPU64"\n",
+ qsd->qsd_svname, global ? "true" : "false", ver);
+
+ upd = qsd_upd_alloc(qqi, lqe, qid, rec, ver, global);
+ if (upd == NULL)
+ RETURN_EXIT;
+
+ /* If we don't want update index version, no need to sort the
+ * records in version order, just schedule the updates instantly. */
+ if (ver == 0) {
+ cfs_write_lock(&qsd->qsd_lock);
+ qsd_upd_add(qsd, upd);
+ cfs_write_unlock(&qsd->qsd_lock);
+ RETURN_EXIT;
+ }
+
+ cfs_write_lock(&qsd->qsd_lock);
+
+ cur_ver = global ? qqi->qqi_glb_ver : qqi->qqi_slv_ver;
+
+ if (ver <= cur_ver) {
+ if (global)
+ /* legitimate race between glimpse AST and
+ * reintegration */
+ CDEBUG(D_QUOTA, "%s: discarding glb update from glimpse"
+ " ver:"LPU64" local ver:"LPU64"\n",
+ qsd->qsd_svname, ver, cur_ver);
+ else
+ CERROR("%s: discard slv update, ver:"LPU64" local ver:"
+ LPU64"\n", qsd->qsd_svname, ver, cur_ver);
+ qsd_upd_free(upd);
+ } else if ((ver == cur_ver + 1) && qqi->qqi_glb_uptodate &&
+ qqi->qqi_slv_uptodate) {
+ /* In order update, and reintegration has been done. */
+ qsd_upd_add(qsd, upd);
+ } else {
+ /* Out of order update (the one with smaller version hasn't
+ * reached slave or hasn't been flushed to disk yet), or
+ * the reintegration is in progress. Defer the update. */
+ cfs_list_t *list = global ? &qqi->qqi_deferred_glb :
+ &qqi->qqi_deferred_slv;
+ qsd_add_deferred(list, upd);
+ }
+
+ cfs_write_unlock(&qsd->qsd_lock);
+
+ EXIT;
+}
+
+static int qsd_process_upd(const struct lu_env *env, struct qsd_upd_rec *upd)
+{
+ struct lquota_entry *lqe = upd->qur_lqe;
+ struct qsd_qtype_info *qqi = upd->qur_qqi;
+ int rc;
+ ENTRY;
+
+ if (lqe == NULL) {
+ lqe = lqe_locate(env, qqi->qqi_site, &upd->qur_qid);
+ if (IS_ERR(lqe))
+ GOTO(out, rc = PTR_ERR(lqe));
+ }
+
+ /* The in-memory lqe update for slave index copy isn't deferred,
+ * we shouldn't touch it here. */
+ if (upd->qur_global) {
+ rc = qsd_update_lqe(env, lqe, upd->qur_global, &upd->qur_rec);
+ if (rc)
+ GOTO(out, rc);
+ /* Report usage asynchronously */
+ if (lqe->lqe_enforced &&
+ !qsd_refresh_usage(env, lqe)) {
+ rc = qsd_dqacq(env, lqe, QSD_REP);
+ LQUOTA_DEBUG(lqe, "Report usage. rc:%d", rc);
+ }
+ }
+
+ rc = qsd_update_index(env, qqi, &upd->qur_qid, upd->qur_global,
+ upd->qur_ver, &upd->qur_rec);
+out:
+ if (lqe && !IS_ERR(lqe)) {
+ lqe_putref(lqe);
+ upd->qur_lqe = NULL;
+ }
+ RETURN(rc);
+}
+
+void qsd_adjust_schedule(struct lquota_entry *lqe, bool defer, bool cancel)
+{
+ struct qsd_instance *qsd = lqe2qqi(lqe)->qqi_qsd;
+ bool added = false;
+
+ lqe_getref(lqe);
+ cfs_spin_lock(&qsd->qsd_adjust_lock);
+
+ /* the lqe is being queued for the per-ID lock cancel, we should
+ * cancel the lock cancel and re-add it for quota adjust */
+ if (!cfs_list_empty(&lqe->lqe_link) &&
+ lqe->lqe_adjust_time == 0) {
+ cfs_list_del_init(&lqe->lqe_link);
+ lqe_putref(lqe);
+ }
+
+ if (cfs_list_empty(&lqe->lqe_link)) {
+ if (cancel)
+ lqe->lqe_adjust_time = 0;
+ else
+ lqe->lqe_adjust_time = defer ?
+ cfs_time_shift_64(QSD_WB_INTERVAL) :
+ cfs_time_current_64();
+ /* lqe reference transfered to list */
+ if (defer)
+ cfs_list_add_tail(&lqe->lqe_link,
+ &qsd->qsd_adjust_list);
+ else
+ cfs_list_add(&lqe->lqe_link, &qsd->qsd_adjust_list);
+ added = true;
+ }
+ cfs_spin_unlock(&qsd->qsd_adjust_lock);
+
+ if (added)
+ cfs_waitq_signal(&qsd->qsd_upd_thread.t_ctl_waitq);
+ else
+ lqe_putref(lqe);
+}
+
+/* return true if there is pending writeback records or the pending
+ * adjust requests */
+static bool qsd_job_pending(struct qsd_instance *qsd, cfs_list_t *upd,
+ bool *uptodate)
+{
+ bool job_pending = false;
+ int qtype;
+
+ LASSERT(cfs_list_empty(upd));
+ *uptodate = true;
+
+ cfs_spin_lock(&qsd->qsd_adjust_lock);
+ if (!cfs_list_empty(&qsd->qsd_adjust_list)) {
+ struct lquota_entry *lqe;
+ lqe = cfs_list_entry(qsd->qsd_adjust_list.next,
+ struct lquota_entry, lqe_link);
+ if (cfs_time_beforeq_64(lqe->lqe_adjust_time,
+ cfs_time_current_64()))
+ job_pending = true;
+ }
+ cfs_spin_unlock(&qsd->qsd_adjust_lock);
+
+ cfs_write_lock(&qsd->qsd_lock);
+ if (!cfs_list_empty(&qsd->qsd_upd_list)) {
+ cfs_list_splice_init(&qsd->qsd_upd_list, upd);
+ job_pending = true;
+ }
+
+ for (qtype = USRQUOTA; qtype < MAXQUOTAS; qtype++) {
+ struct qsd_qtype_info *qqi = qsd->qsd_type_array[qtype];
+
+ if (!qsd_type_enabled(qsd, qtype))
+ continue;
+
+ if (!qqi->qqi_glb_uptodate || !qqi->qqi_slv_uptodate)
+ *uptodate = false;
+ }
+
+ cfs_write_unlock(&qsd->qsd_lock);
+ return job_pending;
+}
+
+static int qsd_upd_thread(void *arg)
+{
+ struct qsd_instance *qsd = (struct qsd_instance *)arg;
+ struct ptlrpc_thread *thread = &qsd->qsd_upd_thread;
+ struct l_wait_info lwi;
+ cfs_list_t queue;
+ struct qsd_upd_rec *upd, *n;
+ char pname[MTI_NAME_MAXLEN];
+ struct lu_env *env;
+ int qtype, rc = 0;
+ bool uptodate;
+ struct lquota_entry *lqe, *tmp;
+ __u64 cur_time;
+ ENTRY;
+
+ OBD_ALLOC_PTR(env);
+ if (env == NULL)
+ RETURN(-ENOMEM);
+
+ rc = lu_env_init(env, LCT_DT_THREAD);
+ if (rc) {
+ CERROR("%s: Fail to init env.", qsd->qsd_svname);
+ OBD_FREE_PTR(env);
+ RETURN(rc);
+ }
+
+ snprintf(pname, MTI_NAME_MAXLEN, "lquota_wb_%s", qsd->qsd_svname);
+ cfs_daemonize(pname);
+
+ thread_set_flags(thread, SVC_RUNNING);
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+
+ CFS_INIT_LIST_HEAD(&queue);
+ lwi = LWI_TIMEOUT(cfs_time_seconds(QSD_WB_INTERVAL), NULL, NULL);
+ while (1) {
+ l_wait_event(thread->t_ctl_waitq,
+ qsd_job_pending(qsd, &queue, &uptodate) ||
+ !thread_is_running(thread), &lwi);
+
+ cfs_list_for_each_entry_safe(upd, n, &queue, qur_link) {
+ cfs_list_del_init(&upd->qur_link);
+ qsd_process_upd(env, upd);
+ qsd_upd_free(upd);
+ }
+
+ cfs_spin_lock(&qsd->qsd_adjust_lock);
+ cur_time = cfs_time_current_64();
+ cfs_list_for_each_entry_safe(lqe, tmp, &qsd->qsd_adjust_list,
+ lqe_link) {
+ /* deferred items are sorted by time */
+ if (!cfs_time_beforeq_64(lqe->lqe_adjust_time,
+ cur_time))
+ break;
+
+ cfs_list_del_init(&lqe->lqe_link);
+ cfs_spin_unlock(&qsd->qsd_adjust_lock);
+
+ if (thread_is_running(thread) && uptodate) {
+ qsd_refresh_usage(env, lqe);
+ if (lqe->lqe_adjust_time == 0)
+ qsd_id_lock_cancel(env, lqe);
+ else
+ qsd_dqacq(env, lqe, QSD_ADJ);
+ }
+
+ lqe_putref(lqe);
+ cfs_spin_lock(&qsd->qsd_adjust_lock);
+ }
+ cfs_spin_unlock(&qsd->qsd_adjust_lock);
+
+ if (!thread_is_running(thread))
+ break;
+
+ if (uptodate)
+ continue;
+
+ for (qtype = USRQUOTA; qtype < MAXQUOTAS; qtype++)
+ qsd_start_reint_thread(qsd->qsd_type_array[qtype]);
+ }
+ lu_env_fini(env);
+ OBD_FREE_PTR(env);
+ thread_set_flags(thread, SVC_STOPPED);
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+ RETURN(rc);
+}
+
+int qsd_start_upd_thread(struct qsd_instance *qsd)
+{
+ struct ptlrpc_thread *thread = &qsd->qsd_upd_thread;
+ struct l_wait_info lwi = { 0 };
+ int rc;
+ ENTRY;
+
+ rc = cfs_create_thread(qsd_upd_thread, (void *)qsd, 0);
+ if (rc < 0) {
+ CERROR("Fail to start quota update thread. rc: %d\n", rc);
+ thread_set_flags(thread, SVC_STOPPED);
+ RETURN(rc);
+ }
+
+ l_wait_event(thread->t_ctl_waitq,
+ thread_is_running(thread) || thread_is_stopped(thread),
+ &lwi);
+ RETURN(0);
+}
+
+static void qsd_cleanup_deferred(struct qsd_instance *qsd)
+{
+ int qtype;
+
+ for (qtype = USRQUOTA; qtype < MAXQUOTAS; qtype++) {
+ struct qsd_upd_rec *upd, *tmp;
+ struct qsd_qtype_info *qqi = qsd->qsd_type_array[qtype];
+
+ if (qqi == NULL)
+ continue;
+
+ cfs_write_lock(&qsd->qsd_lock);
+ cfs_list_for_each_entry_safe(upd, tmp, &qqi->qqi_deferred_glb,
+ qur_link) {
+ CWARN("%s: Free global deferred upd: ID:"LPU64", "
+ "ver:"LPU64"/"LPU64"\n", qsd->qsd_svname,
+ upd->qur_qid.qid_uid, upd->qur_ver,
+ qqi->qqi_glb_ver);
+ list_del_init(&upd->qur_link);
+ qsd_upd_free(upd);
+ }
+ cfs_list_for_each_entry_safe(upd, tmp, &qqi->qqi_deferred_slv,
+ qur_link) {
+ CWARN("%s: Free slave deferred upd: ID:"LPU64", "
+ "ver:"LPU64"/"LPU64"\n", qsd->qsd_svname,
+ upd->qur_qid.qid_uid, upd->qur_ver,
+ qqi->qqi_slv_ver);
+ list_del_init(&upd->qur_link);
+ qsd_upd_free(upd);
+ }
+ cfs_write_unlock(&qsd->qsd_lock);
+ }
+}
+
+static void qsd_cleanup_adjust(struct qsd_instance *qsd)
+{
+ struct lquota_entry *lqe;
+
+ cfs_spin_lock(&qsd->qsd_adjust_lock);
+ while (!cfs_list_empty(&qsd->qsd_adjust_list)) {
+ lqe = cfs_list_entry(qsd->qsd_adjust_list.next,
+ struct lquota_entry, lqe_link);
+ cfs_list_del_init(&lqe->lqe_link);
+ lqe_putref(lqe);
+ }
+ cfs_spin_unlock(&qsd->qsd_adjust_lock);
+}
+
+void qsd_stop_upd_thread(struct qsd_instance *qsd)
+{
+ struct ptlrpc_thread *thread = &qsd->qsd_upd_thread;
+ struct l_wait_info lwi = { 0 };
+
+ if (!thread_is_stopped(thread)) {
+ thread_set_flags(thread, SVC_STOPPING);
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+
+ l_wait_event(thread->t_ctl_waitq, thread_is_stopped(thread),
+ &lwi);
+ }
+ qsd_cleanup_deferred(qsd);
+ qsd_cleanup_adjust(qsd);
}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff