fs/xfs/xfs_rw.c

   1 /*
   2  * Copyright (c) 2000-2006 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18 #include "xfs.h"
  19 #include "xfs_fs.h"
  20 #include "xfs_types.h"
  21 #include "xfs_bit.h"
  22 #include "xfs_log.h"
  23 #include "xfs_trans.h"
  24 #include "xfs_sb.h"
  25 #include "xfs_ag.h"
  26 #include "xfs_mount.h"
  27 #include "xfs_bmap_btree.h"
  28 #include "xfs_dinode.h"
  29 #include "xfs_inode.h"
  30 #include "xfs_error.h"
  31
  32 /*
  33  * Force a shutdown of the filesystem instantly while keeping
  34  * the filesystem consistent. We don't do an unmount here; just shutdown
  35  * the shop, make sure that absolutely nothing persistent happens to
  36  * this filesystem after this point.
  37  */
  38 void
  39 xfs_do_force_shutdown(
  40         xfs_mount_t     *mp,
  41         int             flags,
  42         char            *fname,
  43         int             lnnum)
  44 {
  45         int             logerror;
  46
  47         logerror = flags & SHUTDOWN_LOG_IO_ERROR;
  48
  49         if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
  50                 xfs_notice(mp,
  51         "%s(0x%x) called from line %d of file %s.  Return address = 0x%p",
  52                         __func__, flags, lnnum, fname, __return_address);
  53         }
  54         /*
  55          * No need to duplicate efforts.
  56          */
  57         if (XFS_FORCED_SHUTDOWN(mp) && !logerror)
  58                 return;
  59
  60         /*
  61          * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't
  62          * queue up anybody new on the log reservations, and wakes up
  63          * everybody who's sleeping on log reservations to tell them
  64          * the bad news.
  65          */
  66         if (xfs_log_force_umount(mp, logerror))
  67                 return;
  68
  69         if (flags & SHUTDOWN_CORRUPT_INCORE) {
  70                 xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT,
  71     "Corruption of in-memory data detected.  Shutting down filesystem");
  72                 if (XFS_ERRLEVEL_HIGH <= xfs_error_level)
  73                         xfs_stack_trace();
  74         } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
  75                 if (logerror) {
  76                         xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR,
  77                 "Log I/O Error Detected.  Shutting down filesystem");
  78                 } else if (flags & SHUTDOWN_DEVICE_REQ) {
  79                         xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
  80                 "All device paths lost.  Shutting down filesystem");
  81                 } else if (!(flags & SHUTDOWN_REMOTE_REQ)) {
  82                         xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
  83                 "I/O Error Detected. Shutting down filesystem");
  84                 }
  85         }
  86         if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
  87                 xfs_alert(mp,
  88         "Please umount the filesystem and rectify the problem(s)");
  89         }
  90 }