* GPL HEADER END
*/
/*
- * Copyright (c) 2012 Whamcloud, Inc.
+ * Copyright (c) 2012, Intel Corporation.
* Use is subject to license terms.
*/
* 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 */
+ 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 :(
- */
- cfs_rwlock_t qsd_lock;
+ * - flags of the qsd_qtype_info */
+ rwlock_t qsd_lock;
- /* per-filesystem quota information */
- struct qsd_fsinfo *qsd_fsinfo;
+ /* 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;
- /* link into qfs_qsd_list of qfs_fsinfo */
- cfs_list_t qsd_link;
+ /* how long a service thread can wait for quota space.
+ * value dynamically computed from obd_timeout and at_max if not
+ * enforced here (via procfs) */
+ int qsd_timeout;
unsigned long qsd_is_md:1, /* managing quota for mdt */
- qsd_stopping:1; /* qsd_instance is stopping */
+ 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 */
+ qsd_acct_failed:1; /* failed to set up acct
+ * for one quota type */
};
/*
/* 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
/* list of all qsd_instance for this fs */
cfs_list_t qfs_qsd_list;
- cfs_semaphore_t qfs_sem;
+ struct semaphore qfs_sem;
/* link to the global quota fsinfo list. */
cfs_list_t qfs_link;
cfs_atomic_dec(&qqi->qqi_ref);
}
-/* all kind of operations supported by qsd_dqacq() */
-enum qsd_ops {
- QSD_ADJ, /* adjust quota space based on current qunit */
- QSD_ACQ, /* acquire space for requests */
- QSD_REL, /* release all space quota space uncondionnally */
- QSD_REP, /* report space usage during reintegration */
-};
-
#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 {
struct ldlm_enqueue_info qti_einfo;
struct lustre_handle qti_lockh;
__u64 qti_slv_ver;
- union ldlm_wire_lvb qti_lvb;
+ struct lquota_lvb qti_lvb;
union {
struct quota_body qti_body;
struct idx_info qti_ii;
lqe->lqe_nopreacq = false;
}
+#define QSD_WB_INTERVAL 60 /* 60 seconds */
+
+/* helper function calculating how long a service thread should be waiting for
+ * quota space */
+static inline int qsd_wait_timeout(struct qsd_instance *qsd)
+{
+ if (qsd->qsd_timeout != 0)
+ return qsd->qsd_timeout;
+ return min_t(int, at_max / 2, obd_timeout / 2);
+}
+
/* qsd_entry.c */
extern struct lquota_entry_operations qsd_lqe_ops;
int qsd_refresh_usage(const struct lu_env *, struct lquota_entry *);
struct qsd_qtype_info *,
struct quota_body *, struct quota_body *,
struct lustre_handle *,
- union ldlm_wire_lvb *, void *, int);
+ struct lquota_lvb *, void *, int);
int qsd_send_dqacq(const struct lu_env *, struct obd_export *,
struct quota_body *, bool, qsd_req_completion_t,
struct qsd_qtype_info *, struct lustre_handle *,
struct lquota_entry *);
int qsd_intent_lock(const struct lu_env *, struct obd_export *,
struct quota_body *, bool, int, qsd_req_completion_t,
- struct qsd_qtype_info *, union ldlm_wire_lvb *, void *);
+ struct qsd_qtype_info *, struct lquota_lvb *, void *);
int qsd_fetch_index(const struct lu_env *, struct obd_export *,
struct idx_info *, unsigned int, cfs_page_t **, bool *);
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_adjust(const struct lu_env *, struct lquota_entry *);
+/* 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 */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff