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Do not set -1 for swappiness

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Do not set a default value for swappiness as the default value should be
`nil`

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This commit is contained in:
Michael Crosby 2017-06-30 10:34:40 -07:00
parent 8bc681262f
commit 9d87e6e0fb
5 changed files with 16 additions and 10 deletions
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8
daemon/daemon.go
View file

@ -1243,3 +1243,11 @@ func (daemon *Daemon) checkpointAndSave(container *container.Container) error {
}
return nil
}
// because the CLI sends a -1 when it wants to unset the swappiness value
// we need to clear it on the server side
func fixMemorySwappiness(resources *containertypes.Resources) {
if resources.MemorySwappiness != nil && *resources.MemorySwappiness == -1 {
resources.MemorySwappiness = nil
}
}

3
daemon/daemon_solaris.go
View file

@ -143,6 +143,7 @@ func UsingSystemd(config *Config) bool {
// verifyPlatformContainerSettings performs platform-specific validation of the
// hostconfig and config structures.
func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {
fixMemorySwappiness(resources)
warnings := []string{}
sysInfo := sysinfo.New(true)
// NOTE: We do not enforce a minimum value for swap limits for zones on Solaris and
@ -163,7 +164,7 @@ func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.
}
// Solaris NOTE: We allow and encourage setting the swap without setting the memory limit.
if hostConfig.MemorySwappiness != nil && *hostConfig.MemorySwappiness != -1 && !sysInfo.MemorySwappiness {
if hostConfig.MemorySwappiness != nil && !sysInfo.MemorySwappiness {
warnings = append(warnings, "Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
logrus.Warnf("Your kernel does not support memory swappiness capabilities, memory swappiness discarded.")
hostConfig.MemorySwappiness = nil

9
daemon/daemon_unix.go
View file

@ -282,10 +282,6 @@ func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConf
return err
}
hostConfig.SecurityOpt = append(hostConfig.SecurityOpt, opts...)
if hostConfig.MemorySwappiness == nil {
defaultSwappiness := int64(-1)
hostConfig.MemorySwappiness = &defaultSwappiness
}
if hostConfig.OomKillDisable == nil {
defaultOomKillDisable := false
hostConfig.OomKillDisable = &defaultOomKillDisable
@ -296,6 +292,7 @@ func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConf
func verifyContainerResources(resources *containertypes.Resources, sysInfo *sysinfo.SysInfo, update bool) ([]string, error) {
warnings := []string{}
fixMemorySwappiness(resources)
// memory subsystem checks and adjustments
if resources.Memory != 0 && resources.Memory < linuxMinMemory {
@ -318,14 +315,14 @@ func verifyContainerResources(resources *containertypes.Resources, sysInfo *sysi
if resources.Memory == 0 && resources.MemorySwap > 0 && !update {
return warnings, fmt.Errorf("You should always set the Memory limit when using Memoryswap limit, see usage")
}
if resources.MemorySwappiness != nil && *resources.MemorySwappiness != -1 && !sysInfo.MemorySwappiness {
if resources.MemorySwappiness != nil && !sysInfo.MemorySwappiness {
warnings = append(warnings, "Your kernel does not support memory swappiness capabilities or the cgroup is not mounted. Memory swappiness discarded.")
logrus.Warn("Your kernel does not support memory swappiness capabilities, or the cgroup is not mounted. Memory swappiness discarded.")
resources.MemorySwappiness = nil
}
if resources.MemorySwappiness != nil {
swappiness := *resources.MemorySwappiness
if swappiness < -1 || swappiness > 100 {
if swappiness < 0 || swappiness > 100 {
return warnings, fmt.Errorf("Invalid value: %v, valid memory swappiness range is 0-100", swappiness)
}
}

4
daemon/daemon_windows.go
View file

@ -100,7 +100,7 @@ func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConf
func verifyContainerResources(resources *containertypes.Resources, isHyperv bool) ([]string, error) {
warnings := []string{}
fixMemorySwappiness(resources)
if !isHyperv {
// The processor resource controls are mutually exclusive on
// Windows Server Containers, the order of precedence is
@ -197,7 +197,7 @@ func verifyContainerResources(resources *containertypes.Resources, isHyperv bool
if resources.MemorySwap != 0 {
return warnings, fmt.Errorf("invalid option: Windows does not support MemorySwap")
}
if resources.MemorySwappiness != nil && *resources.MemorySwappiness != -1 {
if resources.MemorySwappiness != nil {
return warnings, fmt.Errorf("invalid option: Windows does not support MemorySwappiness")
}
if resources.OomKillDisable != nil && *resources.OomKillDisable {

2
integration-cli/docker_api_containers_test.go
View file

@ -1448,7 +1448,7 @@ func (s *DockerSuite) TestPostContainersCreateMemorySwappinessHostConfigOmitted(
var containerJSON types.ContainerJSON
c.Assert(json.Unmarshal(body, &containerJSON), check.IsNil)
c.Assert(*containerJSON.HostConfig.MemorySwappiness, check.Equals, int64(-1))
c.Assert(containerJSON.HostConfig.MemorySwappiness, check.IsNil)
}
// check validation is done daemon side and not only in cli