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moby--moby/daemon/mounts.go
Brian Goff dd7d1c8a02 On container rm, don't remove named mountpoints
This makes it so when calling `docker run --rm`, or `docker rm -v`, only
volumes specified without a name, e.g. `docker run -v /foo` instead of
`docker run -v awesome:/foo` are removed.

Note that all volumes are named, some are named by the user, some get a
generated name. This is specifically about how the volume was specified
on `run`, assuming that if the user specified it with a name they expect
it to persist after the container is cleaned up.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2016-01-25 15:51:28 -05:00

48 lines
1.3 KiB
Go

package daemon
import (
"strings"
"github.com/docker/docker/container"
derr "github.com/docker/docker/errors"
volumestore "github.com/docker/docker/volume/store"
)
func (daemon *Daemon) prepareMountPoints(container *container.Container) error {
for _, config := range container.MountPoints {
if err := daemon.lazyInitializeVolume(container.ID, config); err != nil {
return err
}
}
return nil
}
func (daemon *Daemon) removeMountPoints(container *container.Container, rm bool) error {
var rmErrors []string
for _, m := range container.MountPoints {
if m.Volume == nil {
continue
}
daemon.volumes.Dereference(m.Volume, container.ID)
if rm {
// Do not remove named mountpoints
// these are mountpoints specified like `docker run -v <name>:/foo`
if m.Named {
continue
}
err := daemon.volumes.Remove(m.Volume)
// 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 && !volumestore.IsInUse(err) {
rmErrors = append(rmErrors, err.Error())
}
}
}
if len(rmErrors) > 0 {
return derr.ErrorCodeRemovingVolume.WithArgs(strings.Join(rmErrors, "\n"))
}
return nil
}