@@ -2210,6 +2210,70 @@ static void fixup_block_groups(struct btrfs_trans_handle *trans,
}
}
+static int remove_all_dev_extents(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info)
+{
+ struct btrfs_root *root = fs_info->dev_root;
+ struct btrfs_path path;
+ struct btrfs_key key;
+ struct extent_buffer *leaf;
+ int slot;
+ int ret;
+
+ key.objectid = 1;
+ key.type = BTRFS_DEV_EXTENT_KEY;
+ key.offset = 0;
+ btrfs_init_path(&path);
+
+ ret = btrfs_search_slot(trans, root, &key, &path, -1, 1);
+ if (ret < 0) {
+ error("failed to search dev tree: %s", strerror(-ret));
+ return ret;
+ }
+
+ while (1) {
+ slot = path.slots[0];
+ leaf = path.nodes[0];
+ if (slot >= btrfs_header_nritems(leaf)) {
+ ret = btrfs_next_leaf(root, &path);
+ if (ret < 0) {
+ error("failed to search dev tree: %s",
+ strerror(-ret));
+ goto out;
+ }
+ if (ret > 0) {
+ ret = 0;
+ goto out;
+ }
+ }
+
+ btrfs_item_key_to_cpu(leaf, &key, slot);
+ if (key.type != BTRFS_DEV_EXTENT_KEY)
+ break;
+ ret = btrfs_del_item(trans, root, &path);
+ if (ret < 0) {
+ error("failed to delete dev extent %llu, %llu: %s",
+ key.objectid, key.offset, strerror(-ret));
+ goto out;
+ }
+ }
+out:
+ btrfs_release_path(&path);
+ return ret;
+}
+
+static int fixup_dev_extents(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info)
+{
+ int ret;
+
+ ret = remove_all_dev_extents(trans, fs_info);
+ if (ret < 0)
+ error("failed to remove all existing dev extents: %s",
+ strerror(-ret));
+ return ret;
+}
+
static int fixup_chunks_and_devices(struct btrfs_fs_info *fs_info,
struct mdrestore_struct *mdres, off_t dev_size)
{
@@ -2227,6 +2291,10 @@ static int fixup_chunks_and_devices(struct btrfs_fs_info *fs_info,
}
fixup_block_groups(trans, fs_info);
+ ret = fixup_dev_extents(trans, fs_info);
+ if (ret < 0)
+ goto error;
+
ret = fixup_device_size(trans, fs_info, mdres, dev_size);
if (ret < 0)
goto error;
This patch will remove all existing dev extents for later rebuild. Signed-off-by: Qu Wenruo <wqu@suse.com> --- image/main.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+)