* 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, see [sun.com URL with a
- * copy of GPLv2].
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
#ifndef __IMPORT_H
#define __IMPORT_H
+/** \defgroup export export
+ *
+ * @{
+ */
+
#include <lustre_handles.h>
#include <lustre/lustre_idl.h>
#define AT_FLG_NOHIST 0x1 /* use last reported value only */
struct adaptive_timeout {
- time_t at_binstart; /* bin start time */
- unsigned int at_hist[AT_BINS]; /* timeout history bins */
- unsigned int at_flags;
- unsigned int at_current; /* current timeout value */
- unsigned int at_worst_ever; /* worst-ever timeout value */
- time_t at_worst_time; /* worst-ever timeout timestamp */
- spinlock_t at_lock;
+ time_t at_binstart; /* bin start time */
+ unsigned int at_hist[AT_BINS]; /* timeout history bins */
+ unsigned int at_flags;
+ unsigned int at_current; /* current timeout value */
+ unsigned int at_worst_ever; /* worst-ever timeout value */
+ time_t at_worst_time; /* worst-ever timeout timestamp */
+ cfs_spinlock_t at_lock;
};
enum lustre_imp_state {
LUSTRE_IMP_EVICTED = 10,
};
+struct ptlrpc_at_array {
+ cfs_list_t *paa_reqs_array; /* array to hold requests */
+ __u32 paa_size; /* the size of array */
+ __u32 paa_count; /* the total count of reqs */
+ time_t paa_deadline; /* earliest deadline of reqs */
+ __u32 *paa_reqs_count; /* count of reqs in each entry */
+};
+
static inline char * ptlrpc_import_state_name(enum lustre_imp_state state)
{
static char* import_state_names[] = {
};
struct obd_import_conn {
- struct list_head oic_item;
+ cfs_list_t oic_item;
struct ptlrpc_connection *oic_conn;
struct obd_uuid oic_uuid;
__u64 oic_last_attempt; /* jiffies, 64-bit */
struct adaptive_timeout iat_service_estimate[IMP_AT_MAX_PORTALS];
};
+/* state history */
+#define IMP_STATE_HIST_LEN 16
+struct import_state_hist {
+ enum lustre_imp_state ish_state;
+ time_t ish_time;
+};
+
struct obd_import {
struct portals_handle imp_handle;
- atomic_t imp_refcount;
+ cfs_atomic_t imp_refcount;
struct lustre_handle imp_dlm_handle; /* client's ldlm export */
struct ptlrpc_connection *imp_connection;
struct ptlrpc_client *imp_client;
- struct list_head imp_pinger_chain;
- struct list_head imp_zombie_chain; /* queue for destruction */
+ cfs_list_t imp_pinger_chain;
+ cfs_list_t imp_zombie_chain; /* queue for destruction */
/* Lists of requests that are retained for replay, waiting for a reply,
* or waiting for recovery to complete, respectively.
*/
- struct list_head imp_replay_list;
- struct list_head imp_sending_list;
- struct list_head imp_delayed_list;
+ cfs_list_t imp_replay_list;
+ cfs_list_t imp_sending_list;
+ cfs_list_t imp_delayed_list;
struct obd_device *imp_obd;
struct ptlrpc_sec *imp_sec;
- struct semaphore imp_sec_mutex;
+ cfs_semaphore_t imp_sec_mutex;
cfs_time_t imp_sec_expire;
cfs_waitq_t imp_recovery_waitq;
- atomic_t imp_inflight;
- atomic_t imp_replay_inflight;
- atomic_t imp_inval_count;
+ cfs_atomic_t imp_inflight;
+ cfs_atomic_t imp_unregistering;
+ cfs_atomic_t imp_replay_inflight;
+ cfs_atomic_t imp_inval_count; /* in-progress invalidations */
+ cfs_atomic_t imp_timeouts;
enum lustre_imp_state imp_state;
+ struct import_state_hist imp_state_hist[IMP_STATE_HIST_LEN];
+ int imp_state_hist_idx;
int imp_generation;
__u32 imp_conn_cnt;
int imp_last_generation_checked;
__u64 imp_last_success_conn; /* jiffies, 64-bit */
/* all available obd_import_conn linked here */
- struct list_head imp_conn_list;
+ cfs_list_t imp_conn_list;
struct obd_import_conn *imp_conn_current;
/* Protects flags, level, generation, conn_cnt, *_list */
- spinlock_t imp_lock;
+ cfs_spinlock_t imp_lock;
/* flags */
unsigned long imp_no_timeout:1, /* timeouts are disabled */
imp_replayable:1, /* try to recover the import */
imp_dlm_fake:1, /* don't run recovery (timeout instead) */
imp_server_timeout:1, /* use 1/2 timeout on MDS' OSCs */
- imp_initial_recov:1, /* retry the initial connection */
+ imp_initial_recov:1, /* retry the initial connection */
imp_initial_recov_bk:1, /* turn off init_recov after trying all failover nids */
+ imp_delayed_recovery:1, /* VBR: imp in delayed recovery */
+ imp_no_lock_replay:1, /* VBR: if gap was found then no lock replays */
+ imp_vbr_failed:1, /* recovery by versions was failed */
imp_force_verify:1, /* force an immidiate ping */
imp_pingable:1, /* pingable */
imp_resend_replay:1, /* resend for replay */
imp_recon_bk:1, /* turn off reconnect if all failovers fail */
- imp_last_recon:1; /* internally used by above */
+ imp_last_recon:1, /* internally used by above */
+ imp_force_reconnect:1; /* import must be reconnected instead of chouse new connection */
__u32 imp_connect_op;
struct obd_connect_data imp_connect_data;
__u64 imp_connect_flags_orig;
int event, void *event_arg, void *cb_data);
struct obd_import_observer {
- struct list_head oio_chain;
+ cfs_list_t oio_chain;
obd_import_callback oio_cb;
void *oio_cb_data;
};
void *event_arg);
/* import.c */
+static inline unsigned int at_est2timeout(unsigned int val)
+{
+ /* add an arbitrary minimum: 125% +5 sec */
+ return (val + (val >> 2) + 5);
+}
+
+static inline unsigned int at_timeout2est(unsigned int val)
+{
+ /* restore estimate value from timeout: e=4/5(t-5) */
+ LASSERT(val);
+ return (max((val << 2) / 5, 5U) - 4);
+}
+
static inline void at_init(struct adaptive_timeout *at, int val, int flags) {
memset(at, 0, sizeof(*at));
at->at_current = val;
at->at_worst_ever = val;
at->at_worst_time = cfs_time_current_sec();
at->at_flags = flags;
- spin_lock_init(&at->at_lock);
+ cfs_spin_lock_init(&at->at_lock);
}
static inline int at_get(struct adaptive_timeout *at) {
return at->at_current;
}
-int at_add(struct adaptive_timeout *at, unsigned int val);
+int at_measured(struct adaptive_timeout *at, unsigned int val);
int import_at_get_index(struct obd_import *imp, int portal);
extern unsigned int at_max;
#define AT_OFF (at_max == 0)
extern struct obd_import *class_exp2cliimp(struct obd_export *);
extern struct obd_import *class_conn2cliimp(struct lustre_handle *);
+/** @} import */
+
#endif /* __IMPORT_H */