patchdir/autodetect-locking-type.patch

   1 Index: new/lib/locking/locking.c
   2 ===================================================================
   3 --- new.orig/lib/locking/locking.c      2011-06-11 02:03:07.000000000 +0200
   4 +++ new/lib/locking/locking.c   2011-09-21 10:01:47.000000000 +0200
   5 @@ -225,7 +225,16 @@
   6                 suppress_messages = 1;
   7
   8         if (type < 0)
   9 -               type = find_config_tree_int(cmd, "global/locking_type", 1);
  10 +               type = find_config_tree_int(cmd, "global/locking_type", -1);
  11 +
  12 +       if (type < 0) {
  13 +               struct stat info;
  14 +               if (stat("/etc/cluster/cluster.conf", &info) == 0) {
  15 +                       type = 3;
  16 +               } else {
  17 +                       type = 1;
  18 +               }
  19 +       }
  20
  21         _blocking_supported = find_config_tree_int(cmd,
  22             "global/wait_for_locks", DEFAULT_WAIT_FOR_LOCKS);
  23 Index: new/doc/example.conf.in
  24 ===================================================================
  25 --- new.orig/doc/example.conf.in        2011-07-01 16:09:19.000000000 +0200
  26 +++ new/doc/example.conf.in     2011-09-21 10:01:47.000000000 +0200
  27 @@ -350,13 +350,16 @@
  28      proc = "/proc"
  29
  30      # Type of locking to use. Defaults to local file-based locking (1).
  31 +    # Proxmox VE sets default locking_type to 3 if file
  32 +    # /etc/cluster/cluster.conf exists. So there is normally no need
  33 +    # to set this value here.
  34      # Turn locking off by setting to 0 (dangerous: risks metadata corruption
  35      # if LVM2 commands get run concurrently).
  36      # Type 2 uses the external shared library locking_library.
  37      # Type 3 uses built-in clustered locking.
  38      # Type 4 uses read-only locking which forbids any operations that might
  39      # change metadata.
  40 -    locking_type = 1
  41 +    # locking_type = 1
  42
  43      # Set to 0 to fail when a lock request cannot be satisfied immediately.
  44      wait_for_locks = 1