Add mdstat_by_component

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index a7d8b797530c097b95ea38a6eb489c9ff6aae59d..cdf6acbf44d43989c4020fa7b55c9e64ac3ebd3d 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -68,7 +68,18 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
 #define DEFAULT_BITMAP_DELAY 5
 #define DEFAULT_MAX_WRITE_BEHIND 256
 
+/* VAR_RUN is where pid and socket files used for communicating
+ * with mdmon normally live.  It should be /var/run, but if
+ * it is too hard to remount /var/run as read-only rather than
+ * unmounting it at shutdown time, then it should be
+ * redefined to some place that comfortably persists until
+ * final shutdown, possibly in /dev if that is a tmpfs.
+ * Note: VAR_RUN does not need to be writable at shutdown,
+ * only during boot when "mdmon --takeover" is run.
+ */
+#ifndef VAR_RUN
 #define VAR_RUN "/var/run/mdadm"
+#endif /* VAR_RUN */
 /* ALT_RUN should be somewhere that persists across the pivotroot
  * from early boot to late boot.
  * If you don't have /lib/init/rw you might want to use /dev/.something
@@ -76,6 +87,9 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
 #ifndef ALT_RUN
 #define ALT_RUN "/lib/init/rw/mdadm"
 #endif /* ALT_RUN */
+#ifndef ALT_MAPFILE
+#define ALT_MAPFILE "map"
+#endif /* ALT_MAPFILE */
 
 #include       "md_u.h"
 #include       "md_p.h"
@@ -191,7 +205,9 @@ struct mdinfo {
        int container_member; /* for assembling external-metatdata arrays
                               * This is to be used internally by metadata
                               * handler only */
-
+       int container_enough; /* flag external handlers can set to
+                              * indicate that subarrays have not enough (-1),
+                              * enough to start (0), or all expected disks (1) */
        char            sys_name[20];
        struct mdinfo *devs;
        struct mdinfo *next;
@@ -301,6 +317,10 @@ typedef struct mddev_ident_s {
        char    *member;        /* subarray within a container */
 
        struct mddev_ident_s *next;
+       union {
+               /* fields needed by different users of this structure */
+               int assembled;  /* set when assembly succeeds */
+       };
 } *mddev_ident_t;
 
 /* List of device names - wildcards expanded */
@@ -335,6 +355,10 @@ struct mdstat_ent {
        int             raid_disks;
        int             chunk_size;
        char *          metadata_version;
+       struct dev_member {
+               char                    *name;
+               struct dev_member       *next;
+       }               *members;
        struct mdstat_ent *next;
 };
 
@@ -343,6 +367,7 @@ extern void free_mdstat(struct mdstat_ent *ms);
 extern void mdstat_wait(int seconds);
 extern void mdstat_wait_fd(int fd, const sigset_t *sigmask);
 extern int mddev_busy(int devnum);
+extern struct mdstat_ent *mdstat_by_component(char *name);
 
 struct map_ent {
        struct map_ent *next;
@@ -354,6 +379,7 @@ struct map_ent {
 };
 extern int map_update(struct map_ent **mpp, int devnum, char *metadata,
                      int uuid[4], char *path);
+extern void map_remove(struct map_ent **map, int devnum);
 extern struct map_ent *map_by_uuid(struct map_ent **map, int uuid[4]);
 extern struct map_ent *map_by_devnum(struct map_ent **map, int devnum);
 extern struct map_ent *map_by_name(struct map_ent **map, char *name);
@@ -829,7 +855,7 @@ extern int parse_auto(char *str, char *msg, int config);
 extern mddev_ident_t conf_get_ident(char *dev);
 extern mddev_dev_t conf_get_devs(void);
 extern int conf_test_dev(char *devname);
-extern int conf_test_metadata(const char *version);
+extern int conf_test_metadata(const char *version, int is_homehost);
 extern struct createinfo *conf_get_create_info(void);
 extern void set_conffile(char *file);
 extern char *conf_get_mailaddr(void);
@@ -857,6 +883,7 @@ extern int enough(int level, int raid_disks, int layout, int clean,
 extern int ask(char *mesg);
 extern unsigned long long get_component_size(int fd);
 extern void remove_partitions(int fd);
+extern int test_partition(int fd);
 extern unsigned long long calc_array_size(int level, int raid_disks, int layout,
                                   int chunksize, unsigned long long devsize);
 extern int flush_metadata_updates(struct supertype *st);
@@ -886,6 +913,7 @@ extern int create_mddev(char *dev, char *name, int autof, int trustworthy,
                        char *chosen);
 /* values for 'trustworthy' */
 #define        LOCAL   1
+#define        LOCAL_ANY 10
 #define        FOREIGN 2
 #define        METADATA 3
 extern int open_mddev(char *dev, int report_errors);