Fix issue where out-of-band deletions and then a `docker volume create`
on the same driver caused volume to not be re-created in the driver but
return as created since it was stored in the cache.
Previous fix only worked if the driver names did not match.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
(cherry picked from commit d8ce4a6e10)
Signed-off-by: Victor Vieux <victorvieux@gmail.com>
Fixes#22564
When an error occurs on mount, there should not be any call later to
unmount. This can throw off refcounting in the underlying driver
unexpectedly.
Consider these two cases:
```
$ docker run -v foo:/bar busybox true
```
```
$ docker run -v foo:/bar -w /foo busybox true
```
In the first case, if mounting `foo` fails, the volume driver will not
get a call to unmount (this is the incorrect behavior).
In the second case, the volume driver will not get a call to unmount
(correct behavior).
This occurs because in the first case, `/bar` does not exist in the
container, and as such there is no call to `volume.Mount()` during the
`create` phase. It will error out during the `start` phase.
In the second case `/bar` is created before dealing with the volume
because of the `-w`. Because of this, when the volume is being setup
docker will try to copy the image path contents in the volume, in which
case it will attempt to mount the volume and fail. This happens during
the `create` phase. This makes it so the container will not be created
(or at least fully created) and the user gets the error on `create`
instead of `start`. The error handling is different in these two phases.
Changed to only send `unmount` if the volume is mounted.
While investigating the cause of the reported issue I found some odd
behavior in unmount calls so I've cleaned those up a bit here as well.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
When a conflict is found in the volume cache, check with the driver if
that volume still actually exists.
If the volume doesn't exist, purge it from the cache and allow the
create to happen.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Part of #23998. Adds a daemon to this test, so that the
volume that's created is added to this test daemon's vol store
instead of the main test daemons.
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
This is similar to network scopes where a volume can either be `local`
or `global`. A `global` volume is one that exists across the entire
cluster where as a `local` volume exists on a single engine.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
This generates an ID string for calls to Mount/Unmount, allowing drivers
to differentiate between two callers of `Mount` and `Unmount`.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
The `Status` field is a `map[string]interface{}` which allows the driver to pass
back low-level details about the underlying volume.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2016-04-15 10:56:38 -04:00
Renamed from integration-cli/docker_cli_start_volume_driver_unix_test.go (Browse further)
