diff --git a/daemon/graphdriver/aufs/aufs.go b/daemon/graphdriver/aufs/aufs.go index dfc5938bd1..de82b57be8 100644 --- a/daemon/graphdriver/aufs/aufs.go +++ b/daemon/graphdriver/aufs/aufs.go @@ -46,11 +46,14 @@ import ( "github.com/docker/docker/pkg/stringid" "github.com/opencontainers/runc/libcontainer/label" + rsystem "github.com/opencontainers/runc/libcontainer/system" ) var ( // ErrAufsNotSupported is returned if aufs is not supported by the host. ErrAufsNotSupported = fmt.Errorf("AUFS was not found in /proc/filesystems") + // ErrAufsNested means aufs cannot be used bc we are in a user namespace + ErrAufsNested = fmt.Errorf("AUFS cannot be used in non-init user namespace") incompatibleFsMagic = []graphdriver.FsMagic{ graphdriver.FsMagicBtrfs, graphdriver.FsMagicAufs, @@ -146,6 +149,10 @@ func supportsAufs() error { // proc/filesystems for when aufs is supported exec.Command("modprobe", "aufs").Run() + if rsystem.RunningInUserNS() { + return ErrAufsNested + } + f, err := os.Open("/proc/filesystems") if err != nil { return err