Memory swappiness option takes 0-100, and helps to tune swappiness
behavior per container.
For example, When a lower value of swappiness is chosen
the container will see minimum major faults. When no value is
specified for memory-swappiness in docker UI, it is inherited from
parent cgroup. (generally 60 unless it is changed).
Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Often it happens that docker is not able to shutdown/remove the thin
pool it created because some device has leaked into some mount name
space. That means device is in use and that means pool can't be removed.
Docker will leave pool as it is and exit. Later when user starts the
docker, it finds pool is already there and docker uses it. But docker
does not know it is same pool which is using the loop devices. Now
docker thinks loop devices are not being used. That means it does not
display the data correctly in "docker info", giving user wrong information.
This patch tries to detect if loop devices as created by docker are
being used for pool and fills in the right details in "docker info".
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
By convention /pkg is safe to use from outside the docker tree, for example
if you're building a docker orchestrator.
/nat currently doesn't have any dependencies outside of /pkg, so it seems
reasonable to move it there.
This rename was performed with:
```
gomvpkg -vcs_mv_cmd="git mv {{.Src}} {{.Dst}}" \
-from github.com/docker/docker/nat \
-to github.com/docker/docker/pkg/nat
```
Signed-off-by: Peter Waller <p@pwaller.net>
The cleanup to sysinfo package introduced a regression.
If memory cgroup isn't supported and --memory is specified when
starting a container, we should return info instead of nil in
checkCgroupMem(), otherwise we'll access a nil pointer.
Signed-off-by: Zefan Li <lizefan@huawei.com>
Per @ewindisch, removing the CBC ciphers from the client preferred TLS
cipher suites. This will allow a future version of the server to also
remove the CBC ciphers from the accepted list.
This changes the server default to client + additional CBC cipher list,
and client default to the non-CBC ciphers.
Also, cipher order preference is modified so that best and highest-bit count
ciphers are most preferred.
Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
The "TestChangesWithChanges" case randomlly fails on my development
VM with the following errors:
```
--- FAIL: TestChangesWithChanges (0.00s)
changes_test.go:201: no change for expected change C /dir1/subfolder != A /dir1/subfolder/newFile
```
If I apply the following patch to changes_test.go, the test passes.
```diff
diff --git a/pkg/archive/changes_test.go b/pkg/archive/changes_test.go
index 290b2dd..ba1aca0 100644
--- a/pkg/archive/changes_test.go
+++ b/pkg/archive/changes_test.go
@@ -156,6 +156,7 @@ func TestChangesWithChanges(t *testing.T) {
}
defer os.RemoveAll(layer)
createSampleDir(t, layer)
+ time.Sleep(5 * time.Millisecond)
os.MkdirAll(path.Join(layer, "dir1/subfolder"), 0740)
// Let's modify modtime for dir1 to be sure it's the same for the two layer (to not having false positive)
```
It seems that if a file is created immediately after the directory is created,
the `archive.Changes` function could't recognize that the parent directory of
the new file is modified.
Perhaps the problem may reproduce on machines with low time precision?
I had successfully reproduced the failure on my development VM as well as
a VM on DigitalOcean.
Signed-off-by: Shijiang Wei <mountkin@gmail.com>
