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aufs: aufsMount: better errors for unix.Mount()

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Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 5873768dbe)
This commit is contained in:
Kir Kolyshkin 2019-04-18 15:55:55 -07:00
parent d1eae89590
commit 76d936ae76
1 changed files with 2 additions and 0 deletions
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2
daemon/graphdriver/aufs/aufs.go
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@ -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
}
}