06b2219a87
`Mounts` allows users to specify in a much safer way the volumes they
want to use in the container.
This replaces `Binds` and `Volumes`, which both still exist, but
`Mounts` and `Binds`/`Volumes` are exclussive.
The CLI will continue to use `Binds` and `Volumes` due to concerns with
parsing the volume specs on the client side and cross-platform support
(for now).
The new API follows exactly the services mount API.
Example usage of `Mounts`:
```
$ curl -XPOST localhost:2375/containers/create -d '{
"Image": "alpine:latest",
"HostConfig": {
"Mounts": [{
"Type": "Volume",
"Target": "/foo"
},{
"Type": "bind",
"Source": "/var/run/docker.sock",
"Target": "/var/run/docker.sock",
},{
"Type": "volume",
"Name": "important_data",
"Target": "/var/data",
"ReadOnly": true,
"VolumeOptions": {
"DriverConfig": {
Name: "awesomeStorage",
Options: {"size": "10m"},
Labels: {"some":"label"}
}
}]
}
}'
```
There are currently 2 types of mounts:
- **bind**: Paths on the host that get mounted into the
container. Paths must exist prior to creating the container.
- **volume**: Volumes that persist after the
container is removed.
Not all fields are available in each type, and validation is done to
ensure these fields aren't mixed up between types.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: fc7b904dced4d18d49c8a6c47ae3f415d16d0c43
Component: engine
49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
package daemon
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import (
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"fmt"
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"strings"
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"github.com/docker/docker/container"
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volumestore "github.com/docker/docker/volume/store"
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)
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func (daemon *Daemon) prepareMountPoints(container *container.Container) error {
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for _, config := range container.MountPoints {
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if err := daemon.lazyInitializeVolume(container.ID, config); err != nil {
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return err
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}
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}
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return nil
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}
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func (daemon *Daemon) removeMountPoints(container *container.Container, rm bool) error {
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var rmErrors []string
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for _, m := range container.MountPoints {
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if m.Volume == nil {
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continue
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}
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daemon.volumes.Dereference(m.Volume, container.ID)
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if rm {
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// Do not remove named mountpoints
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// these are mountpoints specified like `docker run -v <name>:/foo`
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if m.Spec.Source != "" {
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continue
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}
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err := daemon.volumes.Remove(m.Volume)
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// Ignore volume in use errors because having this
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// volume being referenced by other container is
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// not an error, but an implementation detail.
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// This prevents docker from logging "ERROR: Volume in use"
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// where there is another container using the volume.
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if err != nil && !volumestore.IsInUse(err) {
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rmErrors = append(rmErrors, err.Error())
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}
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}
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}
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if len(rmErrors) > 0 {
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return fmt.Errorf("Error removing volumes:\n%v", strings.Join(rmErrors, "\n"))
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}
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return nil
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}
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