#include <errno.h>
#include <string.h>
#include <syslog.h>
+#ifdef __GLIBC__
+/* Newer glibc requires sys/sysmacros.h directly for makedev() */
+#include <sys/sysmacros.h>
+#endif
#ifdef __dietlibc__
#include <strings.h>
/* dietlibc has deprecated random and srandom!! */
#include <errno.h>
#else
#define LKF_NOQUEUE 0x00000001
-#define LKF_CONVERT 0x00000004
#define LKM_PWMODE 4
#define EUNLOCK 0x10002
extern const char Name[];
+struct md_bb_entry {
+ unsigned long long sector;
+ int length;
+};
+
+struct md_bb {
+ int supported;
+ int count;
+ struct md_bb_entry *entries;
+};
+
/* general information that might be extracted from a superblock */
struct mdinfo {
mdu_array_info_t array;
int journal_device_required;
int journal_clean;
+ enum {
+ CONSISTENCY_POLICY_UNKNOWN,
+ CONSISTENCY_POLICY_NONE,
+ CONSISTENCY_POLICY_RESYNC,
+ CONSISTENCY_POLICY_BITMAP,
+ CONSISTENCY_POLICY_JOURNAL,
+ CONSISTENCY_POLICY_PPL,
+ } consistency_policy;
+
/* During reshape we can sometimes change the data_offset to avoid
* over-writing still-valid data. We need to know if there is space.
* So getinfo_super will fill in space_before and space_after in sectors.
#define MaxSector (~0ULL) /* resync/recovery complete position */
};
long bitmap_offset; /* 0 == none, 1 == a file */
+ unsigned int ppl_size;
+ int ppl_offset;
+ unsigned long long ppl_sector;
unsigned long safe_mode_delay; /* ms delay to mark clean */
int new_level, delta_disks, new_layout, new_chunk;
int errors;
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];
+ char sys_name[32];
struct mdinfo *devs;
struct mdinfo *next;
/* Device info for mdmon: */
int recovery_fd;
int state_fd;
+ int bb_fd;
+ int ubb_fd;
#define DS_FAULTY 1
#define DS_INSYNC 2
#define DS_WRITE_MOSTLY 4
/* info read from sysfs */
char sysfs_array_state[20];
+
+ struct md_bb bb;
};
struct createinfo {
ConfigFile,
ChunkSize,
WriteMostly,
+ FailFast,
+ NoFailFast,
Layout,
Auto,
Force,
ClusterName,
ClusterConfirm,
WriteJournal,
+ ConsistencyPolicy,
};
enum prefix_standard {
NodeNumUpdate,
};
+enum flag_mode {
+ FlagDefault, FlagSet, FlagClear,
+};
+
/* structures read from config file */
/* List of mddevice names and identifiers
* Identifiers can be:
int assume_clean;
int write_behind;
unsigned long long size;
+ int consistency_policy;
};
/* List of device names - wildcards expanded */
* 'A' for re_add.
* Not set for names read from .config
*/
- char writemostly; /* 1 for 'set writemostly', 2 for 'clear writemostly' */
+ enum flag_mode writemostly;
+ enum flag_mode failfast;
int used; /* set when used */
long long data_offset;
struct mddev_dev *next;
char devnm[32];
int active;
char *level;
- char *pattern; /* U or up, _ for down */
+ char *pattern; /* U for up, _ for down */
int percent; /* -1 if no resync */
int resync; /* 3 if check, 2 if reshape, 1 if resync, 0 if recovery */
int devcnt;
GET_STATE = (1 << 23),
GET_ERROR = (1 << 24),
GET_ARRAY_STATE = (1 << 25),
+ GET_CONSISTENCY_POLICY = (1 << 26),
};
/* If fd >= 0, get the array it is open on,
extern int sysfs_unique_holder(char *devnm, long rdev);
extern int sysfs_freeze_array(struct mdinfo *sra);
extern int sysfs_wait(int fd, int *msec);
-extern int load_sys(char *path, char *buf);
+extern int load_sys(char *path, char *buf, int len);
extern int reshape_prepare_fdlist(char *devname,
struct mdinfo *sra,
int raid_disks,
extern char *map_num(mapping_t *map, int num);
extern int map_name(mapping_t *map, char *name);
-extern mapping_t r5layout[], r6layout[], pers[], modes[], faultylayout[];
+extern mapping_t r5layout[], r6layout[], pers[], modes[], faultylayout[], consistency_policies[];
extern char *map_dev_preferred(int major, int minor, int create,
char *prefer);
unsigned long long new_size; /* New size of array in sectors */
};
-/* A superswitch provides entry point the a metadata handler.
+/* A superswitch provides entry point to a metadata handler.
*
* The superswitch primarily operates on some "metadata" that
* is accessed via the 'supertype'.
* linear-grow-update - now change the size of the array.
* writemostly - set the WriteMostly1 bit in the superblock devflags
* readwrite - clear the WriteMostly1 bit in the superblock devflags
+ * failfast - set the FailFast1 bit in the superblock
+ * nofailfast - clear the FailFast1 bit
* no-bitmap - clear any record that a bitmap is present.
* bbl - add a bad-block-log if possible
* no-bbl - remove any bad-block-log is it is empty.
* metadata.
*/
int (*init_super)(struct supertype *st, mdu_array_info_t *info,
- unsigned long long size, char *name,
+ struct shape *s, char *name,
char *homehost, int *uuid,
unsigned long long data_offset);
* created, in which case data_size may be updated, or it might
* already exist. Metadata handler can know if init_super
* has been called, but not write_init_super.
+ * 0: Success
+ * -Exxxx: On error
*/
int (*add_internal_bitmap)(struct supertype *st, int *chunkp,
int delay, int write_behind,
int *chunk, unsigned long long size,
unsigned long long data_offset,
char *subdev, unsigned long long *freesize,
- int verbose);
+ int consistency_policy, int verbose);
/* Return a linked list of 'mdinfo' structures for all arrays
* in the container. For non-containers, it is like
/* validate container after assemble */
int (*validate_container)(struct mdinfo *info);
+ /* write initial empty PPL on device */
+ int (*write_init_ppl)(struct supertype *st, struct mdinfo *info, int fd);
+
+ /* validate ppl before assemble */
+ int (*validate_ppl)(struct supertype *st, struct mdinfo *info,
+ struct mdinfo *disk);
+
+ /* records new bad block in metadata */
+ int (*record_bad_block)(struct active_array *a, int n,
+ unsigned long long sector, int length);
+
+ /* clears bad block from metadata */
+ int (*clear_bad_block)(struct active_array *a, int n,
+ unsigned long long sector, int length);
+
+ /* get list of bad blocks from metadata */
+ struct md_bb *(*get_bad_blocks)(struct active_array *a, int n);
+
int swapuuid; /* true if uuid is bigending rather than hostendian */
int external;
const char *name; /* canonical metadata name */
}
extern struct supertype *dup_super(struct supertype *st);
extern int get_dev_size(int fd, char *dname, unsigned long long *sizep);
+extern int get_dev_sector_size(int fd, char *dname, unsigned int *sectsizep);
extern int must_be_container(int fd);
extern int dev_size_from_id(dev_t id, unsigned long long *size);
void wait_for(char *dev, int fd);
extern int Grow_continue(int mdfd, struct supertype *st,
struct mdinfo *info, char *backup_file,
int forked, int freeze_reshape);
+extern int Grow_consistency_policy(char *devname, int fd,
+ struct context *c, struct shape *s);
extern int restore_backup(struct supertype *st,
struct mdinfo *content,
extern int ExamineBitmap(char *filename, int brief, struct supertype *st);
extern int Write_rules(char *rule_name);
extern int bitmap_update_uuid(int fd, int *uuid, int swap);
-extern unsigned long bitmap_sectors(struct bitmap_super_s *bsb);
+
+/* calculate the size of the bitmap given the array size and bitmap chunksize */
+static inline unsigned long long
+bitmap_bits(unsigned long long array_size, unsigned long chunksize)
+{
+ return (array_size * 512 + chunksize - 1) / chunksize;
+}
+
extern int Dump_metadata(char *dev, char *dir, struct context *c,
struct supertype *st);
extern int Restore_metadata(char *dev, char *dir, struct context *c,
struct supertype *st, int only);
extern int md_get_version(int fd);
+int md_get_array_info(int fd, struct mdu_array_info_s *array);
extern int get_linux_version(void);
extern int mdadm_version(char *version);
extern unsigned long long parse_size(char *size);
struct mdinfo *sra, struct mdinfo *info);
extern int remove_disk(int mdfd, struct supertype *st,
struct mdinfo *sra, struct mdinfo *info);
+extern int hot_remove_disk(int mdfd, unsigned long dev, int force);
+extern int sys_hot_remove_disk(int statefd, int force);
extern int set_array_info(int mdfd, struct supertype *st, struct mdinfo *info);
unsigned long long min_recovery_start(struct mdinfo *array);
extern void put_md_name(char *name);
extern char *devid2kname(int devid);
-extern char *devid2devnm(int devid);
-extern int devnm2devid(char *devnm);
+extern char *devid2devnm(dev_t devid);
+extern dev_t devnm2devid(char *devnm);
extern char *get_md_name(char *devnm);
extern char DefaultConfFile[];
extern int mdmon_pid(char *devnm);
extern int check_env(char *name);
extern __u32 random32(void);
+extern void random_uuid(__u8 *buf);
extern int start_mdmon(char *devnm);
extern int child_monitor(int afd, struct mdinfo *sra, struct reshape *reshape,
void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0);
-extern void fmt_devname(char *name, int num);
+extern char *stat2kname(struct stat *st);
+extern char *fd2kname(int fd);
extern char *stat2devnm(struct stat *st);
extern char *fd2devnm(int fd);
projects / thirdparty / mdadm.git / blobdiff