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Make vfs error more explicit

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Docker-DCO-1.0-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
This commit is contained in:
Guillaume J. Charmes
2014-01-07 16:02:41 -08:00
parent 811341423b
commit ef7e000a13
1 changed files with 2 additions and 3 deletions
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5
graphdriver/vfs/driver.go
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@@ -36,9 +36,8 @@ func (d *Driver) Cleanup() error {
}
func copyDir(src, dst string) error {
cmd := exec.Command("cp", "-aT", "--reflink=auto", src, dst)
if err := cmd.Run(); err != nil {
return err
if output, err := exec.Command("cp", "-aT", "--reflink=auto", src, dst).CombinedOutput(); err != nil {
return fmt.Errorf("Error VFS copying directory: %s (%s)", err, output)
}
return nil
}