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package daemon // import "github.com/docker/docker/daemon"
import (
"context"
"fmt"
"strings"
"github.com/containerd/log"
mounttypes "github.com/docker/docker/api/types/mount"
"github.com/docker/docker/container"
volumesservice "github.com/docker/docker/volume/service"
)
func (daemon *Daemon) prepareMountPoints(container *container.Container) error {
alive := container.IsRunning()
for _, config := range container.MountPoints {
if err := daemon.lazyInitializeVolume(container.ID, config); err != nil {
return err
}
if config.Volume == nil {
// FIXME(thaJeztah): should we check for config.Type here as well? (i.e., skip bind-mounts etc)
continue
}
if alive {
log.G(context.TODO()).WithFields(log.Fields{
"container": container.ID,
"volume": config.Volume.Name(),
}).Debug("Live-restoring volume for alive container")
if err := config.LiveRestore(context.TODO()); err != nil {
return err
}
}
}
return nil
}
func (daemon *Daemon) removeMountPoints(container *container.Container, rm bool) error {
var rmErrors []string
ctx := context.TODO()
for _, m := range container.MountPoints {
if m.Type != mounttypes.TypeVolume || m.Volume == nil {
continue
}
daemon.volumes.Release(ctx, m.Volume.Name(), container.ID)
if !rm {
continue
}
// Do not remove named mountpoints
// these are mountpoints specified like `docker run -v <name>:/foo`
if m.Spec.Source != "" {
continue
}
err := daemon.volumes.Remove(ctx, m.Volume.Name())
// Ignore volume in use errors 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 && !volumesservice.IsInUse(err) {
rmErrors = append(rmErrors, err.Error())
}
}
if len(rmErrors) > 0 {
return fmt.Errorf("Error removing volumes:\n%v", strings.Join(rmErrors, "\n"))
}
return nil
}
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