lustre/include/linux/lustre_ha.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  */
   4
   5 #ifndef _LUSTRE_HA_H
   6 #define _LUSTRE_HA_H
   7
   8 #define LUSTRE_HA_NAME "ptlrpc"
   9
  10 struct recovd_data;
  11 struct recovd_obd;
  12 struct ptlrpc_connection;
  13
  14 /* rd_phase/rd_next_phase values */
  15 #define RD_IDLE              0
  16 #define RD_TROUBLED          1
  17 #define RD_PREPARING         2
  18 #define RD_PREPARED          3
  19 #define RD_RECOVERING        4
  20 #define RD_RECOVERED         5
  21 #define RD_FAILED            6
  22
  23 /* recovd_state values */
  24 #define RECOVD_READY             1
  25 #define RECOVD_STOPPING          2  /* how cleanup tells recovd to quit */
  26 #define RECOVD_STOPPED           4  /* after recovd has stopped */
  27
  28 #define PTLRPC_RECOVD_PHASE_PREPARE  1
  29 #define PTLRPC_RECOVD_PHASE_RECOVER  2
  30 #define PTLRPC_RECOVD_PHASE_FAILURE  3
  31
  32 typedef int (*ptlrpc_recovery_cb_t)(struct recovd_data *, int);
  33
  34 struct recovd_data {
  35         struct list_head     rd_managed_chain;
  36         ptlrpc_recovery_cb_t rd_recover;
  37         struct recovd_obd   *rd_recovd;
  38         __u32                rd_phase;
  39         __u32                rd_next_phase;
  40         __u32                rd_flags;
  41 };
  42
  43 void recovd_conn_fail(struct ptlrpc_connection *conn);
  44 void recovd_conn_manage(struct ptlrpc_connection *conn, struct recovd_obd *mgr,
  45                         ptlrpc_recovery_cb_t recover);
  46 void recovd_conn_fixed(struct ptlrpc_connection *conn);
  47 int recovd_setup(struct recovd_obd *mgr);
  48 int recovd_cleanup(struct recovd_obd *mgr);
  49
  50 extern struct recovd_obd *ptlrpc_recovd;
  51
  52 int ptlrpc_run_recovery_upcall(struct ptlrpc_connection *conn);
  53 int ptlrpc_reconnect_and_replay(struct ptlrpc_connection *conn);
  54
  55 #endif