diff options
Diffstat (limited to 'btrfs-convert.c')
| -rw-r--r-- | btrfs-convert.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/btrfs-convert.c b/btrfs-convert.c index 39eaa37a..5b9171ee 100644 --- a/btrfs-convert.c +++ b/btrfs-convert.c @@ -2597,6 +2597,23 @@ static int do_rollback(const char *devname) btrfs_init_path(&path); key.objectid = CONV_IMAGE_SUBVOL_OBJECTID; + key.type = BTRFS_ROOT_BACKREF_KEY; + key.offset = BTRFS_FS_TREE_OBJECTID; + ret = btrfs_search_slot(NULL, root->fs_info->tree_root, &key, &path, 0, + 0); + btrfs_release_path(&path); + if (ret > 0) { + fprintf(stderr, + "ERROR: unable to convert ext2 image subvolume, is it deleted?\n"); + goto fail; + } else if (ret < 0) { + fprintf(stderr, + "ERROR: unable to open ext2_subvol, id=%llu: %s\n", + (unsigned long long)key.objectid, strerror(-ret)); + goto fail; + } + + key.objectid = CONV_IMAGE_SUBVOL_OBJECTID; key.type = BTRFS_ROOT_ITEM_KEY; key.offset = (u64)-1; image_root = btrfs_read_fs_root(root->fs_info, &key); |