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moby--moby/daemon/mounts.go

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package daemon
import (
"strings"
derr "github.com/docker/docker/errors"
"github.com/docker/docker/volume/store"
)
func (daemon *Daemon) prepareMountPoints(container *Container) error {
for _, config := range container.MountPoints {
if len(config.Driver) > 0 {
v, err := daemon.createVolume(config.Name, config.Driver, nil)
if err != nil {
return err
}
config.Volume = v
}
}
return nil
}
func (daemon *Daemon) removeMountPoints(container *Container, rm bool) error {
var rmErrors []string
for _, m := range container.MountPoints {
if m.Volume == nil {
continue
}
daemon.volumes.Decrement(m.Volume)
if rm {
err := daemon.volumes.Remove(m.Volume)
// ErrVolumeInUse is ignored because having this
// volume being referenced by other container is
// not an error, but an implementation detail.
// This prevents docker from logging "ERROR: Volume in use"
// where there is another container using the volume.
if err != nil && err != store.ErrVolumeInUse {
rmErrors = append(rmErrors, err.Error())
}
}
}
if len(rmErrors) > 0 {
return derr.ErrorCodeRemovingVolume.WithArgs(strings.Join(rmErrors, "\n"))
}
return nil
}