lustre/llite/recover.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Lustre Lite recovery infrastructure.
   5  *
   6  * Copyright (C) 2002 Cluster File Systems Inc.
   7  */
   8
   9 #define DEBUG_SUBSYSTEM S_LLITE
  10
  11 #include <linux/lustre_lite.h>
  12 #include <linux/lustre_ha.h>
  13 #include <linux/lustre_dlm.h>
  14 #include <linux/lustre_idl.h>
  15
  16 static int ll_retry_recovery(struct ptlrpc_connection *conn)
  17 {
  18         ENTRY;
  19         RETURN(0);
  20 }
  21
  22 int ll_recover(struct recovd_data *rd, int phase)
  23 {
  24         struct ptlrpc_connection *conn = class_rd2conn(rd);
  25         struct list_head *tmp;
  26
  27         LASSERT(conn);
  28         ENTRY;
  29
  30         switch (phase) {
  31             case PTLRPC_RECOVD_PHASE_PREPARE:
  32             case PTLRPC_RECOVD_PHASE_RECOVER:
  33                 list_for_each(tmp, &conn->c_imports) {
  34                         struct obd_import *imp =
  35                                 list_entry(tmp, struct obd_import, imp_chain);
  36
  37                         if (phase == PTLRPC_RECOVD_PHASE_PREPARE) {
  38                                 unsigned long flags;
  39                                 spin_lock_irqsave(&imp->imp_lock, flags);
  40                                 imp->imp_level = LUSTRE_CONN_RECOVD;
  41                                 spin_unlock_irqrestore(&imp->imp_lock, flags);
  42                         }
  43                         imp->imp_recover(imp, phase);
  44                 }
  45
  46                 if (phase == PTLRPC_RECOVD_PHASE_PREPARE)
  47                         RETURN(ptlrpc_run_recovery_upcall(conn));
  48                 RETURN(0);
  49
  50             case PTLRPC_RECOVD_PHASE_FAILURE:
  51                 RETURN(ll_retry_recovery(conn));
  52         }
  53
  54         LBUG();
  55         RETURN(-ENOSYS);
  56 }