* Boston, MA 021110-1307, USA.
*/
-#ifndef __BTRFS_VOLUMES_
-#define __BTRFS_VOLUMES_
+#ifndef __BTRFS_VOLUMES_H__
+#define __BTRFS_VOLUMES_H__
+
+#include "kerncompat.h"
+#include "ctree.h"
+
+#define BTRFS_STRIPE_LEN (64 * 1024)
+
struct btrfs_device {
struct list_head dev_list;
struct btrfs_root *dev_root;
+ struct btrfs_fs_devices *fs_devices;
u64 total_ios;
int fd;
+ int writeable;
+
char *name;
+ /* these are read off the super block, only in the progs */
+ char *label;
+ u64 total_devs;
+ u64 super_bytes_used;
+
+ u64 generation;
+
/* the internal btrfs device id */
u64 devid;
u64 type;
/* physical drive uuid (or lvm uuid) */
- u8 uuid[BTRFS_DEV_UUID_SIZE];
+ u8 uuid[BTRFS_UUID_SIZE];
};
struct btrfs_fs_devices {
u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
- /* the device with this id has the most recent coyp of the super */
+ /* the device with this id has the most recent copy of the super */
u64 latest_devid;
u64 latest_trans;
u64 lowest_devid;
int lowest_bdev;
struct list_head devices;
struct list_head list;
+
+ int seeding;
+ struct btrfs_fs_devices *seed;
};
struct btrfs_bio_stripe {
struct btrfs_bio_stripe stripes[];
};
+struct map_lookup {
+ struct cache_extent ce;
+ u64 type;
+ int io_align;
+ int io_width;
+ int stripe_len;
+ int sector_size;
+ int num_stripes;
+ int sub_stripes;
+ struct btrfs_bio_stripe stripes[];
+};
+
#define btrfs_multi_bio_size(n) (sizeof(struct btrfs_multi_bio) + \
(sizeof(struct btrfs_bio_stripe) * (n)))
+#define btrfs_map_lookup_size(n) (sizeof(struct map_lookup) + \
+ (sizeof(struct btrfs_bio_stripe) * (n)))
+
+/*
+ * Restriper's general type filter
+ */
+#define BTRFS_BALANCE_DATA (1ULL << 0)
+#define BTRFS_BALANCE_SYSTEM (1ULL << 1)
+#define BTRFS_BALANCE_METADATA (1ULL << 2)
+
+#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \
+ BTRFS_BALANCE_SYSTEM | \
+ BTRFS_BALANCE_METADATA)
+
+#define BTRFS_BALANCE_FORCE (1ULL << 3)
+#define BTRFS_BALANCE_RESUME (1ULL << 4)
+
+/*
+ * Balance filters
+ */
+#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0)
+#define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1)
+#define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2)
+#define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3)
+#define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4)
+#define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5)
+#define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6)
+#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7)
+#define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10)
-int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
- struct btrfs_device *device,
- u64 owner, u64 num_bytes, u64 *start);
+/*
+ * Profile changing flags. When SOFT is set we won't relocate chunk if
+ * it already has the target profile (even though it may be
+ * half-filled).
+ */
+#define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8)
+#define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9)
+
+#define BTRFS_RAID5_P_STRIPE ((u64)-2)
+#define BTRFS_RAID6_Q_STRIPE ((u64)-1)
+
+/*
+ * Check if the given range cross stripes.
+ * To ensure kernel scrub won't causing bug on with METADATA in mixed
+ * block group
+ */
+static inline int check_crossing_stripes(u64 start, u64 len)
+{
+ return (start / BTRFS_STRIPE_LEN) !=
+ ((start + len - 1) / BTRFS_STRIPE_LEN);
+}
+
+int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
+ u64 logical, u64 *length, u64 *type,
+ struct btrfs_multi_bio **multi_ret, int mirror_num,
+ u64 **raid_map);
int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
u64 logical, u64 *length,
- struct btrfs_multi_bio **multi_ret);
+ struct btrfs_multi_bio **multi_ret, int mirror_num,
+ u64 **raid_map_ret);
+int btrfs_next_bg(struct btrfs_mapping_tree *map_tree, u64 *logical,
+ u64 *size, u64 type);
+static inline int btrfs_next_bg_metadata(struct btrfs_mapping_tree *map_tree,
+ u64 *logical, u64 *size)
+{
+ return btrfs_next_bg(map_tree, logical, size,
+ BTRFS_BLOCK_GROUP_METADATA);
+}
+static inline int btrfs_next_bg_system(struct btrfs_mapping_tree *map_tree,
+ u64 *logical, u64 *size)
+{
+ return btrfs_next_bg(map_tree, logical, size,
+ BTRFS_BLOCK_GROUP_SYSTEM);
+}
+int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
+ u64 chunk_start, u64 physical, u64 devid,
+ u64 **logical, int *naddrs, int *stripe_len);
int btrfs_read_sys_array(struct btrfs_root *root);
int btrfs_read_chunk_tree(struct btrfs_root *root);
int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root, u64 *start,
u64 *num_bytes, u64 type);
+int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans,
+ struct btrfs_root *extent_root, u64 *start,
+ u64 num_bytes, u64 type, int convert);
int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf);
int btrfs_add_device(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
int flags);
int btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
+void btrfs_close_all_devices(void);
int btrfs_add_device(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_device *device);
+int btrfs_update_device(struct btrfs_trans_handle *trans,
+ struct btrfs_device *device);
int btrfs_scan_one_device(int fd, const char *path,
struct btrfs_fs_devices **fs_devices_ret,
- u64 *total_devs, u64 super_offset);
+ u64 *total_devs, u64 super_offset, int super_recover);
+int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
+struct list_head *btrfs_scanned_uuids(void);
+int btrfs_add_system_chunk(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, struct btrfs_key *key,
+ struct btrfs_chunk *chunk, int item_size);
+int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset);
+struct btrfs_device *
+btrfs_find_device_by_devid(struct btrfs_fs_devices *fs_devices,
+ u64 devid, int instance);
+struct btrfs_device *btrfs_find_device(struct btrfs_root *root, u64 devid,
+ u8 *uuid, u8 *fsid);
+int write_raid56_with_parity(struct btrfs_fs_info *info,
+ struct extent_buffer *eb,
+ struct btrfs_multi_bio *multi,
+ u64 stripe_len, u64 *raid_map);
#endif
projects / platform / upstream / btrfs-progs.git / blobdiff