Btrfs device id start from 1, not 0. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> --- utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/utils.c b/utils.c index 560c557..d480353 100644 --- a/utils.c +++ b/utils.c @@ -1765,7 +1765,7 @@ int get_fs_info(char *path, struct btrfs_ioctl_fs_info_args *fi_args, goto out; } - for (; i <= fi_args->max_id; ++i) { + for (i = 1; i <= fi_args->max_id; ++i) { BUG_ON(ndevs >= fi_args->num_devices); ret = get_device_info(fd, i, &di_args[ndevs]); if (ret == -ENODEV) -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html