Add nodes option while creating md

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index cb207c9b2b00805ce9d599707beaec5becceec6e..9d5580192b5f111f77ae131f3d5b304d1da0883d 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -180,6 +180,8 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
 
 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
 
+extern const char Name[];
+
 /* general information that might be extracted from a superblock */
 struct mdinfo {
        mdu_array_info_t        array;
@@ -258,11 +260,10 @@ struct createinfo {
        int     mode;
        int     symlinks;
        int     names;
+       int     bblist;
        struct supertype *supertype;
 };
 
-#define Name "mdadm"
-
 enum mode {
        ASSEMBLE=1,
        BUILD,
@@ -311,6 +312,7 @@ enum special_options {
        Brief,
        ManageOpt,
        Add,
+       AddSpare,
        Remove,
        Fail,
        Replace,
@@ -341,6 +343,8 @@ enum special_options {
        ExamineBB,
        Dump,
        Restore,
+       Action,
+       Nodes,
 };
 
 enum prefix_standard {
@@ -414,6 +418,8 @@ struct context {
        int     freeze_reshape;
        char    *backup_file;
        int     invalid_backup;
+       char    *action;
+       int     nodes;
 };
 
 struct shape {
@@ -584,9 +590,12 @@ extern int reshape_open_backup_file(char *backup,
                                    long blocks,
                                    int *fdlist,
                                    unsigned long long *offsets,
+                                   char *sysfs_name,
                                    int restart);
 extern unsigned long compute_backup_blocks(int nchunk, int ochunk,
                                           unsigned int ndata, unsigned int odata);
+extern char *locate_backup(char *name);
+extern char *make_backup(char *name);
 
 extern int save_stripes(int *source, unsigned long long *offsets,
                        int raid_disks, int chunk_size, int level, int layout,
@@ -923,7 +932,10 @@ extern struct superswitch {
        void (*sync_metadata)(struct supertype *st);
        void (*process_update)(struct supertype *st,
                               struct metadata_update *update);
-       void (*prepare_update)(struct supertype *st,
+       /* Prepare updates allocates extra memory that might be
+        * needed.  If the update cannot be understood,  return 0.
+        */
+       int (*prepare_update)(struct supertype *st,
                               struct metadata_update *update);
 
        /* activate_spare will check if the array is degraded and, if it
@@ -954,6 +966,9 @@ extern struct superswitch {
        /* for external backup area */
        int (*recover_backup)(struct supertype *st, struct mdinfo *info);
 
+       /* validate container after assemble */
+       int (*validate_container)(struct mdinfo *info);
+
        int swapuuid; /* true if uuid is bigending rather than hostendian */
        int external;
        const char *name; /* canonical metadata name */
@@ -1016,6 +1031,7 @@ struct supertype {
                         */
        int devcnt;
        int retry_soon;
+       int nodes;
 
        struct mdinfo *devs;
 
@@ -1189,13 +1205,13 @@ extern int Grow_restart(struct supertype *st, struct mdinfo *info,
                        int *fdlist, int cnt, char *backup_file, int verbose);
 extern int Grow_continue(int mdfd, struct supertype *st,
                         struct mdinfo *info, char *backup_file,
-                        int freeze_reshape);
+                        int forked, int freeze_reshape);
 
 extern int restore_backup(struct supertype *st,
                          struct mdinfo *content,
                          int working_disks,
                          int spares,
-                         char *backup_file,
+                         char **backup_filep,
                          int verbose);
 extern int Grow_continue_command(char *devname, int fd,
                                 char *backup_file, int verbose);
@@ -1233,8 +1249,9 @@ extern int Kill_subarray(char *dev, char *subarray, int verbose);
 extern int Update_subarray(char *dev, char *subarray, char *update, struct mddev_ident *ident, int quiet);
 extern int Wait(char *dev);
 extern int WaitClean(char *dev, int sock, int verbose);
+extern int SetAction(char *dev, char *action);
 
-extern int Incremental(char *devname, struct context *c,
+extern int Incremental(struct mddev_dev *devlist, struct context *c,
                       struct supertype *st);
 extern void RebuildMap(void);
 extern int IncrementalScan(struct context *c, char *devnm);
@@ -1269,8 +1286,10 @@ extern int check_partitions(int fd, char *dname,
                            unsigned long long size);
 
 extern int get_mdp_major(void);
+extern int get_maj_min(char *dev, int *major, int *minor);
 extern int dev_open(char *dev, int flags);
 extern int open_dev(char *devnm);
+extern void reopen_mddev(int mdfd);
 extern int open_dev_flags(char *devnm, int flags);
 extern int open_dev_excl(char *devnm);
 extern int is_standard(char *dev, int *nump);
@@ -1330,7 +1349,11 @@ extern void append_metadata_update(struct supertype *st, void *buf, int len);
 extern int assemble_container_content(struct supertype *st, int mdfd,
                                      struct mdinfo *content,
                                      struct context *c,
-                                     char *chosen_name);
+                                     char *chosen_name, int *result);
+#define        INCR_NO         1
+#define        INCR_UNSAFE     2
+#define        INCR_ALREADY    4
+#define        INCR_YES        8
 extern struct mdinfo *container_choose_spares(struct supertype *st,
                                              unsigned long long min_size,
                                              struct domainlist *domlist,
@@ -1420,9 +1443,13 @@ static inline char *to_subarray(struct mdstat_ent *ent, char *container)
 
 #ifdef DEBUG
 #define dprintf(fmt, arg...) \
+       fprintf(stderr, "%s: %s: "fmt, Name, __func__, ##arg)
+#define dprintf_cont(fmt, arg...) \
        fprintf(stderr, fmt, ##arg)
 #else
 #define dprintf(fmt, arg...) \
+        ({ if (0) fprintf(stderr, "%s: %s: " fmt, Name, __func__, ##arg); 0; })
+#define dprintf_cont(fmt, arg...) \
         ({ if (0) fprintf(stderr, fmt, ##arg); 0; })
 #endif
 #include <assert.h>
@@ -1437,7 +1464,11 @@ static inline int xasprintf(char **strp, const char *fmt, ...) {
        return ret;
 }
 
-#define pr_err(fmt ...) fprintf(stderr, Name ": " fmt)
+#ifdef DEBUG
+#define pr_err(fmt, args...) fprintf(stderr, "%s: %s: "fmt, Name, __func__, ##args)
+#else
+#define pr_err(fmt, args...) fprintf(stderr, "%s: "fmt, Name, ##args)
+#endif
 #define cont_err(fmt ...) fprintf(stderr, "       " fmt)
 
 void *xmalloc(size_t len);
@@ -1453,6 +1484,9 @@ char *xstrdup(const char *str);
 #define LEVEL_CONTAINER                (-100)
 #define        LEVEL_UNSUPPORTED       (-200)
 
+/* the kernel does know about this one ... */
+#define        LEVEL_NONE              (-1000000)
+
 /* faulty stuff */
 
 #define        WriteTransient  0