mdmon.h

   1
   2 enum array_state { clear, inactive, suspended, readonly, read_auto,
   3                    clean, active, write_pending, active_idle, bad_word};
   4
   5 enum sync_action { idle, reshape, resync, recover, check, repair, bad_action };
   6
   7
   8 struct active_array {
   9         struct mdinfo info;
  10         struct supertype *container;
  11         struct active_array *next, *replaces;
  12
  13         int action_fd;
  14         int resync_start_fd;
  15
  16         enum array_state prev_state, curr_state, next_state;
  17         enum sync_action prev_action, curr_action, next_action;
  18
  19         int check_degraded; /* flag set by mon, read by manage */
  20
  21         int devnum;
  22
  23         unsigned long long resync_start;
  24 };
  25
  26 /*
  27  * Metadata updates are handled by the monitor thread,
  28  * as it has exclusive access to the metadata.
  29  * When the manager want to updates metadata, either
  30  * for it's own reason (e.g. committing a spare) or
  31  * on behalf of mdadm, it creates a metadata_update
  32  * structure and queues it to the monitor.
  33  * Updates are created and processed by code under the
  34  * superswitch.  All common code sees them as opaque
  35  * blobs.
  36  */
  37 struct metadata_update {
  38         int     len;
  39         char    *buf;
  40         void    *space; /* allocated space that monitor will use */
  41         struct metadata_update *next;
  42 };
  43 extern struct metadata_update *update_queue, *update_queue_handled;
  44
  45 #define MD_MAJOR 9
  46
  47 extern struct active_array *container;
  48 extern struct active_array *discard_this;
  49 extern struct active_array *pending_discard;
  50 extern struct md_generic_cmd *active_cmd;
  51
  52
  53 void remove_pidfile(char *devname);
  54 void do_monitor(struct supertype *container);
  55 void do_manager(struct supertype *container);
  56
  57 int read_dev_state(int fd);
  58
  59 struct mdstat_ent *mdstat_read(int hold, int start);
  60
  61 extern struct superswitch super_ddf, super_ddf_bvd, super_ddf_svd;
  62
  63 extern int exit_now, manager_ready;