From 5db6e4ad9bff09b428483f785423c62b27a9666c Mon Sep 17 00:00:00 2001 From: Kir Kolyshkin Date: Thu, 18 Apr 2019 15:55:55 -0700 Subject: [PATCH] aufs: aufsMount: better errors for unix.Mount() Signed-off-by: Kir Kolyshkin (cherry picked from commit 5873768dbe3be2733874b8cf68cb492817f81a94) Upstream-commit: 4ab3020e8df18b5c12c668df6ef3e21b648ce04b Component: engine --- components/engine/daemon/graphdriver/aufs/aufs.go | 2 ++ 1 file changed, 2 insertions(+) diff --git a/components/engine/daemon/graphdriver/aufs/aufs.go b/components/engine/daemon/graphdriver/aufs/aufs.go index 38df774225..5a95ef42e0 100644 --- a/components/engine/daemon/graphdriver/aufs/aufs.go +++ b/components/engine/daemon/graphdriver/aufs/aufs.go @@ -626,6 +626,7 @@ func (a *Driver) aufsMount(ro []string, rw, target, mountLabel string) (err erro } data := label.FormatMountLabel(fmt.Sprintf("%s,%s", string(b[:bp]), opts), mountLabel) if err = unix.Mount("none", target, "aufs", 0, data); err != nil { + err = errors.Wrap(err, "mount target="+target+" data="+data) return } @@ -633,6 +634,7 @@ func (a *Driver) aufsMount(ro []string, rw, target, mountLabel string) (err erro layer := fmt.Sprintf(":%s=ro+wh", ro[index]) data := label.FormatMountLabel(fmt.Sprintf("append%s", layer), mountLabel) if err = unix.Mount("none", target, "aufs", unix.MS_REMOUNT, data); err != nil { + err = errors.Wrap(err, "mount target="+target+" flags=MS_REMOUNT data="+data) return } }