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 RECOVD_IDLE              0
  16 #define RECOVD_PREPARING         1
  17 #define RECOVD_PREPARED          2
  18 #define RECOVD_RECOVERING        3
  19 #define RECOVD_RECOVERED         4
  20 #define RECOVD_FAILED            5
  21
  22 /* recovd_state values */
  23 #define RECOVD_READY             1
  24 #define RECOVD_STOPPING          2  /* how cleanup tells recovd to quit */
  25 #define RECOVD_STOPPED           4  /* after recovd has stopped */
  26
  27 #define PTLRPC_RECOVD_PHASE_PREPARE  1
  28 #define PTLRPC_RECOVD_PHASE_RECOVER  2
  29 #define PTLRPC_RECOVD_PHASE_FAILURE  3
  30
  31 typedef int (*ptlrpc_recovery_cb_t)(struct recovd_data *, int);
  32
  33 struct recovd_data {
  34         struct list_head     rd_managed_chain;
  35         ptlrpc_recovery_cb_t rd_recover;
  36         struct recovd_obd   *rd_recovd;
  37         __u32                rd_phase;
  38         __u32                rd_next_phase;
  39         __u32                rd_flags;
  40 };
  41
  42 void recovd_conn_fail(struct ptlrpc_connection *conn);
  43 void recovd_conn_manage(struct ptlrpc_connection *conn, struct recovd_obd *mgr,
  44                         ptlrpc_recovery_cb_t recover);
  45 void recovd_conn_fixed(struct ptlrpc_connection *conn);
  46 int recovd_setup(struct recovd_obd *mgr);
  47 int recovd_cleanup(struct recovd_obd *mgr);
  48
  49 extern struct recovd_obd *ptlrpc_recovd;
  50
  51 int ll_recover(struct recovd_data *rd, int phase);
  52
  53 #endif