btrfs: improve an error string

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
This commit is contained in:
Akihiro Suda 2017-07-18 10:33:29 +00:00
parent 4888d40ac7
commit e76357cb57

View File

@ -54,7 +54,7 @@ func NewSnapshotter(root string) (snapshot.Snapshotter, error) {
return nil, err
}
if mnt.FSType != "btrfs" {
return nil, fmt.Errorf("expected btrfs, got %s", mnt.FSType)
return nil, fmt.Errorf("path %s must be a btrfs filesystem to be used with the btrfs snapshotter", root)
}
var (
active = filepath.Join(root, "active")