Right now we seem to have 3 locks.
- devinfo.lock
This is a per device lock
- metaData.devicesLock
This is supposedely protecting map of devices.
- Global DeviceSet lock
This is protecting map of devices as well as serializing calls to libdevmapper.
Semantics of per devices lock and global deviceset lock seem to be very clear.
Even ordering between these two locks has been defined properly.
What is not clear is the need and ordering of metaData.devicesLock. Looks like
this lock is not necessary and global DeviceSet lock should be used to
protect map of devices as it is part of DeviceSet.
This patchset gets rid of metaData.devicesLock and instead uses DeviceSet
lock to protect map of devices.
Also at couple of places during initialization takes devices.Lock(). That
is not strictly necessary as there is supposed to be one thread of execution
during initializaiton. Still it makes the code clearer.
I think this makes code more clear and easier to understand and easier to
make further changes.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: 289145ecc6c016b8bb6797cc50905e34da911e84
Component: engine
Looks like nobody is calling HasActivatedDevice(). Get rid of it.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: 73f8b46d84e73929eacafe4c2f9676469f862c49
Component: engine
maxDeviceID is upper limit on device Id thin pool can support. Right now
we have this check only during startup. It is a good idea to move this
check in loadMetadata so that any time a device file is loaded and if it
is corrupted and device Id is more than maxDevieceID, it will be detected
right then and there.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: 94caae2477f42b55adeab22f14bcef22b90373d6
Component: engine
Use deactivateDevice() instead of removeDevice() directly. This will make
sure for device deletion, deferred removal is used if user has configured
it in. Also this makes reading code litle easier as there is single function
to remove a device and that is deactivateDevice().
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: 39081eb3aa8f715c1da6f798c6531efd7a8a494c
Component: engine
If a device is still mounted at the time of DeleteDevice(), that means
higher layers have not called Put() properly on the device and are trying
to delete it. This is a bug in the code where Get() and Put() have not been
properly paired up. Fail device deletion if it is still mounted.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: e97e46b7376c3195383636d305d832b2ba3f82c5
Component: engine
Exists() and HasDevice() just check if device file exists or not. It does
not say anything about if device is mounted or not. Fix comments.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: f5c0eb9ffe9a9d30ac6ff81fa1a4c216908189a6
Component: engine
device has map (device.Devices), contains valid devices and we skip all
the files which are not device files. transaction metadata file is not
device file. Skip this file when devices files are being read and loaded
into map.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: ba02bf31cbffe329e549516e0004cf113ab4517e
Component: engine
Implement basic interfaces to write custom routers that can be plugged
to the server. Remove server coupling with the daemon.
Signed-off-by: David Calavera <david.calavera@gmail.com>
Upstream-commit: da982cf5511814b6897244ecaa9c016f8800340a
Component: engine
Although having a request ID available throughout the codebase is very
valuable, the impact of requiring a Context as an argument to every
function in the codepath of an API request, is too significant and was
not properly understood at the time of the review.
Furthermore, mixing API-layer code with non-API-layer code makes the
latter usable only by API-layer code (one that has a notion of Context).
This reverts commit de4164043546d2b9ee3bf323dbc41f4979c84480, reversing
changes made to 7daeecd42d7bb112bfe01532c8c9a962bb0c7967.
Signed-off-by: Tibor Vass <tibor@docker.com>
Conflicts:
api/server/container.go
builder/internals.go
daemon/container_unix.go
daemon/create.go
Upstream-commit: b08f071e18043abe8ce15f56826d38dd26bedb78
Component: engine
This reverts commit ff92f45be49146cd7ac7716c36d89de989cb262e, reversing
changes made to 80e31df3b6fdf6c1fbd6a5d0aceb0a148066508c.
Reverting to make the next revert easier.
Signed-off-by: Tibor Vass <tibor@docker.com>
Upstream-commit: 79c31f4b13d331d4011b2975a96dcdeab2036865
Component: engine
Fixes an issue where `VOLUME some_name:/foo` would be parsed as a named
volume, allowing access from the builder to any volume on the host.
This makes sure that named volumes must always be passed in as a bind.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 8e5bb8fdd37879ec04c3419b8ecfce7a0477cdcf
Component: engine
Use `pkg/discovery` to provide nodes discovery between daemon instances.
The functionality is driven by two different command-line flags: the
experimental `--cluster-store` (previously `--kv-store`) and
`--cluster-advertise`. It can be used in two ways by interested
components:
1. Externally by calling the `/info` API and examining the cluster store
field. The `pkg/discovery` package can then be used to hit the same
endpoint and watch for appearing or disappearing nodes. That is the
method that will for example be used by Swarm.
2. Internally by using the `Daemon.discoveryWatcher` instance. That is
the method that will for example be used by libnetwork.
Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
Upstream-commit: 7d193ef1f3b5fcd6aa55b7376116e2617be12e06
Component: engine
* Thanks to the Default gateway service in libnetwork, we dont have to add
containers explicitly to secondary public network. This is handled
automatically regardless of the primary network driver.
* Fixed the URL convention for kv-store to be aligned with the upcoming
changes to discovery URL
* Also, in order to bring consistency between external and internal network
drivers, we moved the driver configs via controller Init.
Signed-off-by: Madhu Venugopal <madhu@docker.com>
Upstream-commit: 6db1592066da48cf9ac619cef7d8d7b3a39db518
Component: engine
- use existing exposed type
Signed-off-by: Morgan Bauer <mbauer@us.ibm.com>
Upstream-commit: 93bd57b0b21e1a802b80388c8fc034780e3200fc
Component: engine
Avoid creating a global context object that will be used while the daemon is running.
Not only this object won't ever be garbage collected, but it won't ever be used for anything else than creating other contexts in each request. I think it's a bad practive to have something like this sprawling aroud the code.
This change removes that global object and initializes a context in the cases we don't have already one, like shutting down the server.
This also removes a bunch of context arguments from functions that did nothing with it.
Signed-off-by: David Calavera <david.calavera@gmail.com>
Upstream-commit: 27c76522dea91ec585f0b5f0ae1fec8c255b7b22
Component: engine
This PR adds a "request ID" to each event generated, the 'docker events'
stream now looks like this:
```
2015-09-10T15:02:50.000000000-07:00 [reqid: c01e3534ddca] de7c5d4ca927253cf4e978ee9c4545161e406e9b5a14617efb52c658b249174a: (from ubuntu) create
```
Note the `[reqID: c01e3534ddca]` part, that's new.
Each HTTP request will generate its own unique ID. So, if you do a
`docker build` you'll see a series of events all with the same reqID.
This allow for log processing tools to determine which events are all related
to the same http request.
I didn't propigate the context to all possible funcs in the daemon,
I decided to just do the ones that needed it in order to get the reqID
into the events. I'd like to have people review this direction first, and
if we're ok with it then I'll make sure we're consistent about when
we pass around the context - IOW, make sure that all funcs at the same level
have a context passed in even if they don't call the log funcs - this will
ensure we're consistent w/o passing it around for all calls unnecessarily.
ping @icecrime @calavera @crosbymichael
Signed-off-by: Doug Davis <dug@us.ibm.com>
Upstream-commit: 26b1064967d9fcefd4c35f60e96bf6d7c9a3b5f8
Component: engine
This fixes some tests that were failing on windows
Signed-off-by: Darren Stahl <darst@microsoft.com>
Upstream-commit: ca5cc770b9f0d473b285f55eb78d507a8669ee41
Component: engine
- Print the mount table as in /proc/self/mountinfo
- Do not exit prematurely when one of the ipc mounts doesn't exist.
- Do not exit prematurely when one of the ipc mounts cannot be unmounted.
- Add a unit test to see if the cleanup really works.
- Use syscall.MNT_DETACH to cleanup mounts after a crash.
- Unmount IPC mounts when the daemon unregisters an old running container.
Signed-off-by: David Calavera <david.calavera@gmail.com>
Upstream-commit: b1d2f52bb2bb900cddb526320b13da18634fe518
Component: engine
- refactor to make it easier to split the api in the future
Signed-off-by: Morgan Bauer <mbauer@us.ibm.com>
Upstream-commit: 8aef1a33eb730a7c9b7e92b688bc63e6a3c69f62
Component: engine
