imsm: Prepare reshape_update in mdadm

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index bfeddd0a0e46ac8e3ec9a12b20c75e8c774ab062..2062825405353a7ed19e634686d2b6847d600ca6 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -310,6 +310,7 @@ enum special_options {
        Fork,
        Bitmap,
        RebuildMapOpt,
+       InvalidBackup,
 };
 
 /* structures read from config file */
@@ -386,7 +387,6 @@ struct mdstat_ent {
        int             resync; /* 3 if check, 2 if reshape, 1 if resync, 0 if recovery */
        int             devcnt;
        int             raid_disks;
-       int             chunk_size;
        char *          metadata_version;
        struct dev_member {
                char                    *name;
@@ -401,6 +401,7 @@ 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);
+extern struct mdstat_ent *mdstat_by_subdev(char *subdev, int container);
 
 struct map_ent {
        struct map_ent *next;
@@ -475,7 +476,25 @@ extern int sysfs_disk_to_scsi_id(int fd, __u32 *id);
 extern int sysfs_unique_holder(int devnum, long rdev);
 extern int sysfs_freeze_array(struct mdinfo *sra);
 extern int load_sys(char *path, char *buf);
-
+extern int reshape_prepare_fdlist(char *devname,
+                                 struct mdinfo *sra,
+                                 int raid_disks,
+                                 int nrdisks,
+                                 unsigned long blocks,
+                                 char *backup_file,
+                                 int *fdlist,
+                                 unsigned long long *offsets);
+extern void reshape_free_fdlist(int *fdlist,
+                               unsigned long long *offsets,
+                               int size);
+extern int reshape_open_backup_file(char *backup,
+                                   int fd,
+                                   char *devname,
+                                   long blocks,
+                                   int *fdlist,
+                                   unsigned long long *offsets);
+extern unsigned long compute_backup_blocks(int nchunk, int ochunk,
+                                          unsigned int ndata, unsigned int odata);
 
 extern int save_stripes(int *source, unsigned long long *offsets,
                        int raid_disks, int chunk_size, int level, int layout,
@@ -616,7 +635,11 @@ extern struct superswitch {
         * when hot-adding a spare.
         */
        int (*add_to_super)(struct supertype *st, mdu_disk_info_t *dinfo,
-                            int fd, char *devname);
+                           int fd, char *devname);
+       /* update the metadata to delete a device,
+        * when hot-removing.
+        */
+       int (*remove_from_super)(struct supertype *st, mdu_disk_info_t *dinfo);
 
        /* Write metadata to one device when fixing problems or adding
         * a new device.
@@ -941,13 +964,15 @@ extern int Manage_ro(char *devname, int fd, int readonly);
 extern int Manage_runstop(char *devname, int fd, int runstop, int quiet);
 extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
 extern int Manage_subdevs(char *devname, int fd,
-                         struct mddev_dev *devlist, int verbose, int test);
+                         struct mddev_dev *devlist, int verbose, int test,
+                         char *update);
 extern int autodetect(void);
 extern int Grow_Add_device(char *devname, int fd, char *newdev);
 extern int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int write_behind, int force);
 extern int Grow_reshape(char *devname, int fd, int quiet, char *backup_file,
                        long long size,
-                       int level, char *layout_str, int chunksize, int raid_disks);
+                       int level, char *layout_str, int chunksize, int raid_disks,
+                       int force);
 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,
@@ -955,7 +980,8 @@ extern int Grow_continue(int mdfd, struct supertype *st,
 
 extern int Assemble(struct supertype *st, char *mddev,
                    struct mddev_ident *ident,
-                   struct mddev_dev *devlist, char *backup_file,
+                   struct mddev_dev *devlist,
+                   char *backup_file, int invalid_backup,
                    int readonly, int runstop,
                    char *update, char *homehost, int require_homehost,
                    int verbose, int force);
@@ -1108,6 +1134,7 @@ extern __u32 random32(void);
 extern int start_mdmon(int devnum);
 
 extern char *devnum2devname(int num);
+extern void fmt_devname(char *name, int num);
 extern int devname2devnum(char *name);
 extern int stat2devnum(struct stat *st);
 extern int fd2devnum(int fd);