btrfs: read raid stripe tree from disk
If we find the raid-stripe-tree on mount, read it from disk. This is a backward incompatible feature. The rescue=ignorebadroots mount option will skip this tree. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
parent
ee1293308e
commit
515020900d
@ -356,6 +356,11 @@ void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info)
|
||||
min_items++;
|
||||
}
|
||||
|
||||
if (btrfs_fs_incompat(fs_info, RAID_STRIPE_TREE)) {
|
||||
num_bytes += btrfs_root_used(&fs_info->stripe_root->root_item);
|
||||
min_items++;
|
||||
}
|
||||
|
||||
/*
|
||||
* But we also want to reserve enough space so we can do the fallback
|
||||
* global reserve for an unlink, which is an additional
|
||||
@ -407,6 +412,7 @@ void btrfs_init_root_block_rsv(struct btrfs_root *root)
|
||||
case BTRFS_EXTENT_TREE_OBJECTID:
|
||||
case BTRFS_FREE_SPACE_TREE_OBJECTID:
|
||||
case BTRFS_BLOCK_GROUP_TREE_OBJECTID:
|
||||
case BTRFS_RAID_STRIPE_TREE_OBJECTID:
|
||||
root->block_rsv = &fs_info->delayed_refs_rsv;
|
||||
break;
|
||||
case BTRFS_ROOT_TREE_OBJECTID:
|
||||
|
@ -1179,6 +1179,8 @@ static struct btrfs_root *btrfs_get_global_root(struct btrfs_fs_info *fs_info,
|
||||
return btrfs_grab_root(fs_info->block_group_root);
|
||||
case BTRFS_FREE_SPACE_TREE_OBJECTID:
|
||||
return btrfs_grab_root(btrfs_global_root(fs_info, &key));
|
||||
case BTRFS_RAID_STRIPE_TREE_OBJECTID:
|
||||
return btrfs_grab_root(fs_info->stripe_root);
|
||||
default:
|
||||
return NULL;
|
||||
}
|
||||
@ -1259,6 +1261,7 @@ void btrfs_free_fs_info(struct btrfs_fs_info *fs_info)
|
||||
btrfs_put_root(fs_info->fs_root);
|
||||
btrfs_put_root(fs_info->data_reloc_root);
|
||||
btrfs_put_root(fs_info->block_group_root);
|
||||
btrfs_put_root(fs_info->stripe_root);
|
||||
btrfs_check_leaked_roots(fs_info);
|
||||
btrfs_extent_buffer_leak_debug_check(fs_info);
|
||||
kfree(fs_info->super_copy);
|
||||
@ -1804,6 +1807,7 @@ static void free_root_pointers(struct btrfs_fs_info *info, bool free_chunk_root)
|
||||
free_root_extent_buffers(info->fs_root);
|
||||
free_root_extent_buffers(info->data_reloc_root);
|
||||
free_root_extent_buffers(info->block_group_root);
|
||||
free_root_extent_buffers(info->stripe_root);
|
||||
if (free_chunk_root)
|
||||
free_root_extent_buffers(info->chunk_root);
|
||||
}
|
||||
@ -2280,6 +2284,20 @@ static int btrfs_read_roots(struct btrfs_fs_info *fs_info)
|
||||
fs_info->uuid_root = root;
|
||||
}
|
||||
|
||||
if (btrfs_fs_incompat(fs_info, RAID_STRIPE_TREE)) {
|
||||
location.objectid = BTRFS_RAID_STRIPE_TREE_OBJECTID;
|
||||
root = btrfs_read_tree_root(tree_root, &location);
|
||||
if (IS_ERR(root)) {
|
||||
if (!btrfs_test_opt(fs_info, IGNOREBADROOTS)) {
|
||||
ret = PTR_ERR(root);
|
||||
goto out;
|
||||
}
|
||||
} else {
|
||||
set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);
|
||||
fs_info->stripe_root = root;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
out:
|
||||
btrfs_warn(fs_info, "failed to read root (objectid=%llu): %d",
|
||||
|
@ -373,6 +373,7 @@ struct btrfs_fs_info {
|
||||
struct btrfs_root *uuid_root;
|
||||
struct btrfs_root *data_reloc_root;
|
||||
struct btrfs_root *block_group_root;
|
||||
struct btrfs_root *stripe_root;
|
||||
|
||||
/* The log root tree is a directory of all the other log roots */
|
||||
struct btrfs_root *log_root_tree;
|
||||
|
@ -333,6 +333,7 @@ struct btrfs_ioctl_fs_info_args {
|
||||
#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)
|
||||
#define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12)
|
||||
#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13)
|
||||
#define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14)
|
||||
|
||||
struct btrfs_ioctl_feature_flags {
|
||||
__u64 compat_flags;
|
||||
|
Loading…
x
Reference in New Issue
Block a user