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Commit a2bff640 authored by Stefan Behrens's avatar Stefan Behrens Committed by Josef Bacik
Browse files

Btrfs: introduce a btrfs_dev_replace_item type 



Signed-off-by: default avatarStefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: default avatarChris Mason <chris.mason@fusionio.com>
parent e922e087

fs/btrfs/ctree.h

+66 −0
Original line number Diff line number Diff line
@@ -921,6 +921,23 @@ struct btrfs_dev_replace { 
	struct btrfs_scrub_progress scrub_progress;

};



struct btrfs_dev_replace_item {

	/*

	 * grow this item struct at the end for future enhancements and keep

	 * the existing values unchanged

	 */

	__le64 src_devid;

	__le64 cursor_left;

	__le64 cursor_right;

	__le64 cont_reading_from_srcdev_mode;



	__le64 replace_state;

	__le64 time_started;

	__le64 time_stopped;

	__le64 num_write_errors;

	__le64 num_uncorrectable_read_errors;

} __attribute__ ((__packed__));



/* different types of block groups (and chunks) */

#define BTRFS_BLOCK_GROUP_DATA		(1ULL << 0)

#define BTRFS_BLOCK_GROUP_SYSTEM	(1ULL << 1)
@@ -1762,6 +1779,12 @@ struct btrfs_ioctl_defrag_range_args { 
 */

#define BTRFS_DEV_STATS_KEY	249



/*

 * Persistantly stores the device replace state in the device tree.

 * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0).

 */

#define BTRFS_DEV_REPLACE_KEY	250



/*

 * string items are for debugging.  They just store a short string of

 * data in the FS
@@ -2795,6 +2818,49 @@ BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, 
BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,

		   rsv_excl, 64);



/* btrfs_dev_replace_item */

BTRFS_SETGET_FUNCS(dev_replace_src_devid,

		   struct btrfs_dev_replace_item, src_devid, 64);

BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode,

		   struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode,

		   64);

BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item,

		   replace_state, 64);

BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item,

		   time_started, 64);

BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item,

		   time_stopped, 64);

BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item,

		   num_write_errors, 64);

BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors,

		   struct btrfs_dev_replace_item, num_uncorrectable_read_errors,

		   64);

BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item,

		   cursor_left, 64);

BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item,

		   cursor_right, 64);



BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid,

			 struct btrfs_dev_replace_item, src_devid, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode,

			 struct btrfs_dev_replace_item,

			 cont_reading_from_srcdev_mode, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state,

			 struct btrfs_dev_replace_item, replace_state, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started,

			 struct btrfs_dev_replace_item, time_started, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped,

			 struct btrfs_dev_replace_item, time_stopped, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors,

			 struct btrfs_dev_replace_item, num_write_errors, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors,

			 struct btrfs_dev_replace_item,

			 num_uncorrectable_read_errors, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left,

			 struct btrfs_dev_replace_item, cursor_left, 64);

BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,

			 struct btrfs_dev_replace_item, cursor_right, 64);



static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb)

{

	return sb->s_fs_info;

fs/btrfs/print-tree.c

+3 −0
Original line number Diff line number Diff line
@@ -297,6 +297,9 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) 
		case BTRFS_DEV_STATS_KEY:

			printk(KERN_INFO "\t\tdevice stats\n");

			break;

		case BTRFS_DEV_REPLACE_KEY:

			printk(KERN_INFO "\t\tdev replace\n");

			break;

		};

	}

}