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moby--moby/daemon/graphdriver/overlayutils/overlayutils.go
Chengguang Xu 8a21b128d4 Add additional message when backendfs is extfs without d_type support
ext4 support d_type by default, but filetype feature is a tunable so
there is still a chance to disable it for some reasons. In this case,
print additional message to explicitly tell how to support d_type.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
2018-05-18 10:32:47 +08:00

25 lines
818 B
Go

// +build linux
package overlayutils // import "github.com/docker/docker/daemon/graphdriver/overlayutils"
import (
"fmt"
"github.com/docker/docker/daemon/graphdriver"
)
// ErrDTypeNotSupported denotes that the backing filesystem doesn't support d_type.
func ErrDTypeNotSupported(driver, backingFs string) error {
msg := fmt.Sprintf("%s: the backing %s filesystem is formatted without d_type support, which leads to incorrect behavior.", driver, backingFs)
if backingFs == "xfs" {
msg += " Reformat the filesystem with ftype=1 to enable d_type support."
}
if backingFs == "extfs" {
msg += " Reformat the filesystem (or use tune2fs) with -O filetype flag to enable d_type support."
}
msg += " Backing filesystems without d_type support are not supported."
return graphdriver.NotSupportedError(msg)
}