#include <linux/percpu_counter.h>
#include <linux/rhashtable.h>
#include <linux/ctype.h>
-#include <obd_target.h>
struct seq_file;
struct proc_dir_entry;
LU_XATTR_CREATE = BIT(1),
LU_XATTR_MERGE = BIT(2),
LU_XATTR_SPLIT = BIT(3),
+ LU_XATTR_PURGE = BIT(4),
};
/** @} helpers */
return lu_device_is_cl(o->lo_dev);
}
+/* Generic subset of tgts */
+struct lu_tgt_pool {
+ __u32 *op_array; /* array of index of
+ * lov_obd->lov_tgts
+ */
+ unsigned int op_count; /* number of tgts in the array */
+ unsigned int op_size; /* allocated size of op_array */
+ struct rw_semaphore op_rw_sem; /* to protect lu_tgt_pool use */
+};
+
+int lu_tgt_pool_init(struct lu_tgt_pool *op, unsigned int count);
+int lu_tgt_pool_add(struct lu_tgt_pool *op, __u32 idx, unsigned int min_count);
+int lu_tgt_pool_remove(struct lu_tgt_pool *op, __u32 idx);
+int lu_tgt_pool_free(struct lu_tgt_pool *op);
+int lu_tgt_check_index(int idx, struct lu_tgt_pool *osts);
+int lu_tgt_pool_extend(struct lu_tgt_pool *op, unsigned int min_count);
+
/* bitflags used in rr / qos allocation */
enum lq_flag {
LQ_DIRTY = 0, /* recalc qos data */
struct obd_uuid lsq_uuid; /* ptlrpc's c_remote_uuid */
struct list_head lsq_svr_list; /* link to lq_svr_list */
__u64 lsq_bavail; /* total bytes avail on svr */
- __u64 lsq_iavail; /* tital inode avail on svr */
+ __u64 lsq_iavail; /* total inode avail on svr */
__u64 lsq_penalty; /* current penalty */
__u64 lsq_penalty_per_obj; /* penalty decrease
* every obj*/
__u64 ltq_penalty; /* current penalty */
__u64 ltq_penalty_per_obj; /* penalty decrease
* every obj*/
+ __u64 ltq_avail; /* bytes/inode avail */
__u64 ltq_weight; /* net weighting */
time64_t ltq_used; /* last used time, seconds */
bool ltq_usable:1; /* usable for striping */
};
/* target descriptor */
+#define LOV_QOS_DEF_THRESHOLD_RR_PCT 17
+#define LMV_QOS_DEF_THRESHOLD_RR_PCT 5
+
+#define LOV_QOS_DEF_PRIO_FREE 90
+#define LMV_QOS_DEF_PRIO_FREE 90
+
struct lu_tgt_desc {
union {
struct dt_device *ltd_tgt;
void lu_tgt_descs_fini(struct lu_tgt_descs *ltd);
int ltd_add_tgt(struct lu_tgt_descs *ltd, struct lu_tgt_desc *tgt);
void ltd_del_tgt(struct lu_tgt_descs *ltd, struct lu_tgt_desc *tgt);
-bool ltd_qos_is_usable(struct lu_tgt_descs *ltd);
int ltd_qos_penalties_calc(struct lu_tgt_descs *ltd);
int ltd_qos_update(struct lu_tgt_descs *ltd, struct lu_tgt_desc *tgt,
__u64 *total_wt);
+/**
+ * Whether MDT inode and space usages are balanced.
+ */
+static inline bool ltd_qos_is_balanced(struct lu_tgt_descs *ltd)
+{
+ return !test_bit(LQ_DIRTY, <d->ltd_qos.lq_flags) &&
+ test_bit(LQ_SAME_SPACE, <d->ltd_qos.lq_flags);
+}
+
+/**
+ * Whether QoS data is up-to-date and QoS can be applied.
+ */
+static inline bool ltd_qos_is_usable(struct lu_tgt_descs *ltd)
+{
+ if (ltd_qos_is_balanced(ltd))
+ return false;
+
+ if (ltd->ltd_lov_desc.ld_active_tgt_count < 2)
+ return false;
+
+ return true;
+}
+
static inline struct lu_tgt_desc *ltd_first_tgt(struct lu_tgt_descs *ltd)
{
int index;