libpod: drop arbitrary memory limit of 4M
drop the arbitrary limit of 4M for creating a container.
@@ -12,11 +12,6 @@ import (
"github.com/sirupsen/logrus"
)
-const (
- // It's not kernel limit, we want this 4M limit to supply a reasonable functional container
- linuxMinMemory = 4194304
-)
-
// GetAllLabels ...
func GetAllLabels(labelFile, inputLabels []string) (map[string]string, error) {
labels := make(map[string]string)
@@ -86,9 +81,6 @@ func verifyContainerResources(config *cc.CreateConfig, update bool) ([]string, e
sysInfo := sysinfo.New(true)
// memory subsystem checks and adjustments
- if config.Resources.Memory != 0 && config.Resources.Memory < linuxMinMemory {
- return warnings, fmt.Errorf("minimum memory limit allowed is 4MB")
- }
if config.Resources.Memory > 0 && !sysInfo.MemoryLimit {
warnings = addWarning(warnings, "Your kernel does not support memory limit capabilities or the cgroup is not mounted. Limitation discarded.")
config.Resources.Memory = 0
@@ -120,9 +112,6 @@ func verifyContainerResources(config *cc.CreateConfig, update bool) ([]string, e
warnings = addWarning(warnings, "Your kernel does not support memory soft limit capabilities or the cgroup is not mounted. Limitation discarded.")
config.Resources.MemoryReservation = 0
}
- if config.Resources.MemoryReservation > 0 && config.Resources.MemoryReservation < linuxMinMemory {
- return warnings, fmt.Errorf("minimum memory reservation allowed is 4MB")
- }
if config.Resources.Memory > 0 && config.Resources.MemoryReservation > 0 && config.Resources.Memory < config.Resources.MemoryReservation {
return warnings, fmt.Errorf("minimum memory limit cannot be less than memory reservation limit, see usage")
}
@@ -130,9 +119,6 @@ func verifyContainerResources(config *cc.CreateConfig, update bool) ([]string, e
warnings = addWarning(warnings, "Your kernel does not support kernel memory limit capabilities or the cgroup is not mounted. Limitation discarded.")
config.Resources.KernelMemory = 0
}
- if config.Resources.KernelMemory > 0 && config.Resources.KernelMemory < linuxMinMemory {
- return warnings, fmt.Errorf("minimum kernel memory limit allowed is 4MB")
- }
if config.Resources.DisableOomKiller && !sysInfo.OomKillDisable {
// only produce warnings if the setting wasn't to *disable* the OOM Kill; no point
// warning the caller if they already wanted the feature to be off
