Problem Description:
An example scenario that involves deferred removal
1. A new base image gets created (e.g. 'docker load -i'). The base device is activated and
mounted at some point in time during image creation.
2. While image creation is in progress, a privileged container is started
from another image and the host's mount name space is shared with this
container ('docker run --privileged -v /:/host').
3. Image creation completes and the base device gets unmounted. However,
as the privileged container still holds a reference on the base image
mount point, the base device cannot be removed right away. So it gets
flagged for deferred removal.
4. Next, the privileged container terminates and thus its reference to the
base image mount point gets released. The base device (which is flagged
for deferred removal) may now be cleaned up by the device-mapper. This
opens up an opportunity for a race between a 'kworker' thread (executing
the do_deferred_remove() function) and the Docker daemon (executing the
CreateSnapDevice() function).
This PR cancel the deferred removal, if the device is marked for it. And reschedule the
deferred removal later after the device is resumed successfully.
Signed-off-by: Shishir Mahajan <shishir.mahajan@redhat.com>
Upstream-commit: 0e633ee14aca32480ac4735675222c35f4e11d8c
Component: engine
Fixes: #25073
Update kernel memory on running containers without initialized
is forbidden only on kernel version older than 4.6.
Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
Upstream-commit: da5d66fb70064b093f73cc31eddb7e8285048161
Component: engine
This fix tries to improve error messages when IP address
autodetection fails, as is specified in 25141.
Previously, error messages only indicate that multiple IPs
exist when autodetection fails. In this fix, if one
interface consists of multiple addresses or multiple
interfaces consist of addresses, the error messages output
the address names and interface names so that end user could
take notice.
This fix is verified manually.
When multiple addresses exist on multiple interfaces:
```
$ sudo docker swarm init
Error response from daemon: could not choose an IP address
to advertise since this system has multiple addresses on different
interfaces (192.168.186.128 on ens33 and 192.168.100.199 on eth10)
- specify one with --advertise-addr
```
When multiple addresses exist on single interface:
```
$ sudo docker swarm init
Error response from daemon: could not choose an IP address
to advertise since this system has multiple addresses
on interface ens33 (192.168.186.128 and 192.168.55.199)
- specify one with --advertise-addr
```
This fix fixes 25141.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: 59db01049ac6a8e54490565dc44661f780c13734
Component: engine
A kernel may support any of these, but an admin may have unmounted
certain cgroups, so let's include that possibility in the error so
as to avoid users thinking they have a kernel issue.
Signed-off-by: Christy Perez <christy@linux.vnet.ibm.com>
Upstream-commit: 846f33f93d9cd32ed90680d106cd5d9eb96b0ddd
Component: engine
join-tokens are not needed for this endpoint, and should not be as part
of /info
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
(cherry picked from commit d8f3b3f006629c5c1368eca96bcd5bda2a54acd7)
Upstream-commit: 96b2a6e548bc3abf0f0a505ee020d2fe1e8997de
Component: engine
Reason of the lock is currently unknown
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
Upstream-commit: e1a61dc2643cebd1da7b3aadbc5e1ad5a0e77a90
Component: engine
With digests being added by default, all images have multiple references.
The check for whether force is required to remove the reference should use the new check for single reference which accounts for digest references.
This change restores pre-1.12 behavior and ensures images are not accidentally left dangling while a container is running.
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Upstream-commit: 1f7a9b1ab3d261de5be7d490e7e4f978f317242f
Component: engine
Context cancellations were previously causing `Prepare` to fail
completely on re-entrant calls. To prevent this, we filtered out cancels
and deadline errors. While this allowed the service to proceed without
errors, it had the possibility of interrupting long pulls, causing the
pull to happen twice.
This PR forks the context of the pull to match the lifetime of
`Controller`, ensuring that for each task, the pull is only performed
once. It also ensures that multiple calls to `Prepare` are re-entrant,
ensuring that the pull resumes from its original position.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
Upstream-commit: d8d71ad5b94d44a2778f2d8989424259cac94e9b
Component: engine
Remove the swarm inspect command and use docker info instead to display
swarm information if the current node is a manager.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: e6923f6d75c2bd1b22cc1229214ffceca3251cc6
Component: engine
Ensure that cancellation of a pull propagates rather than continuing to
container creation. This ensures that the `Prepare` method is properly
re-entrant.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
Upstream-commit: d99c6b837ffd18ffe5bce801feb4936bf0edd2aa
Component: engine
Instead reserve exit code 2 to be future proof, document that it should
not be used. Implementation-wise, it is considered as unhealthy, but
users should not rely on this as it may change in the future.
Signed-off-by: Tibor Vass <tibor@docker.com>
Upstream-commit: 91e9f3831330c63f8351b9fc3f7c31b3229505be
Component: engine
