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| author | Stefan Behrens | 2012-11-05 17:26:40 +0100 |
|---|---|---|
| committer | Josef Bacik | 2012-12-12 23:15:37 +0100 |
| commit | e922e087a35c437acef3bc88ce31e59c699c38bd (patch) | |
| tree | 7fe78c7b4b3927132d5f06617c47f26a3dbcc686 /fs/btrfs/ctree.h | |
| parent | Btrfs: avoid risk of a deadlock in btrfs_handle_error (diff) | |
| download | kernel-qcow2-linux-e922e087a35c437acef3bc88ce31e59c699c38bd.tar.gz kernel-qcow2-linux-e922e087a35c437acef3bc88ce31e59c699c38bd.tar.xz kernel-qcow2-linux-e922e087a35c437acef3bc88ce31e59c699c38bd.zip | |
Btrfs: enhance btrfs structures for device replace support
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index f8bb62c82b0c..0781fd4a5c1a 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -885,6 +885,42 @@ struct btrfs_dev_stats_item { __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; } __attribute__ ((__packed__)); +#define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 +#define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 +#define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 +#define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 +#define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 +#define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 +#define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 + +struct btrfs_dev_replace { + u64 replace_state; /* see #define above */ + u64 time_started; /* seconds since 1-Jan-1970 */ + u64 time_stopped; /* seconds since 1-Jan-1970 */ + atomic64_t num_write_errors; + atomic64_t num_uncorrectable_read_errors; + + u64 cursor_left; + u64 committed_cursor_left; + u64 cursor_left_last_write_of_item; + u64 cursor_right; + + u64 cont_reading_from_srcdev_mode; /* see #define above */ + + int is_valid; + int item_needs_writeback; + struct btrfs_device *srcdev; + struct btrfs_device *tgtdev; + + pid_t lock_owner; + atomic_t nesting_level; + struct mutex lock_finishing_cancel_unmount; + struct mutex lock_management_lock; + struct mutex lock; + + struct btrfs_scrub_progress scrub_progress; +}; + /* different types of block groups (and chunks) */ #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) @@ -1471,6 +1507,9 @@ struct btrfs_fs_info { int backup_root_index; int num_tolerated_disk_barrier_failures; + + /* device replace state */ + struct btrfs_dev_replace dev_replace; }; /* |