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Btrfs: introduce a btrfs_dev_replace_item type 

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Stefan Behrens 2012-11-05 17:32:20 +01:00 committed by Josef Bacik
parent e922e087a3
commit a2bff64025
2 changed files with 69 additions and 0 deletions
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66
fs/btrfs/ctree.h
View File

@ -921,6 +921,23 @@ struct btrfs_dev_replace {
struct btrfs_scrub_progress scrub_progress; 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) */ /* different types of block groups (and chunks) */
#define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0)
#define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1)
@ -1762,6 +1779,12 @@ struct btrfs_ioctl_defrag_range_args {
*/ */
#define BTRFS_DEV_STATS_KEY 249 #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 * string items are for debugging. They just store a short string of
* data in the FS * 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, BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,
rsv_excl, 64); 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) static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb)
{ {
return sb->s_fs_info; return sb->s_fs_info;

3
fs/btrfs/print-tree.c
View File

@ -297,6 +297,9 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
case BTRFS_DEV_STATS_KEY: case BTRFS_DEV_STATS_KEY:
printk(KERN_INFO "\t\tdevice stats\n"); printk(KERN_INFO "\t\tdevice stats\n");
break; break;
case BTRFS_DEV_REPLACE_KEY:
printk(KERN_INFO "\t\tdev replace\n");
break;
}; };
} }
} }