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Btrfs: Add support for mirroring across drives

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-04-03 16:29:03 -04:00
parent 0ef8b2428a
commit 8790d502e4
6 changed files with 198 additions and 93 deletions
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9
fs/btrfs/ctree.h
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@@ -418,6 +418,7 @@ struct btrfs_csum_item {
#define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
#define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
#define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
#define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
struct btrfs_block_group_item {
@@ -504,8 +505,12 @@ struct btrfs_fs_info {
u64 delalloc_bytes;
u64 last_alloc;
u64 last_data_alloc;
int extra_data_alloc_bits;
int extra_alloc_bits;
int avail_data_alloc_bits;
int avail_metadata_alloc_bits;
int avail_system_alloc_bits;
int data_alloc_profile;
int metadata_alloc_profile;
int system_alloc_profile;
};
/*