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//go:build linux
package cgroups
import (
"bytes"
"fmt"
"math/big"
"os"
"os/exec"
"strconv"
"testing"
"github.com/containers/storage/pkg/unshare"
"github.com/opencontainers/cgroups"
)
func TestCreated(t *testing.T) {
// tests only works in rootless mode.
if unshare.IsRootless() {
return
}
var resources cgroups.Resources
cgr, err := New("machine.slice", &resources)
if err != nil {
t.Fatal(err)
}
if err := cgr.Delete(); err != nil {
t.Fatal(err)
}
cgr, err = NewSystemd("machine.slice", &resources)
if err != nil {
t.Fatal(err)
}
if err := cgr.Delete(); err != nil {
t.Fatal(err)
}
}
func TestResources(t *testing.T) {
// tests only works in rootful mode.
if unshare.IsRootless() {
return
}
wtDevices := []*cgroups.WeightDevice{}
devices := []*cgroups.ThrottleDevice{}
dev1 := cgroups.NewThrottleDevice(1, 3, 2097152)
dev2 := cgroups.NewThrottleDevice(3, 10, 2097152)
dev3 := cgroups.NewWeightDevice(5, 9, 500, 0)
devices = append(devices, dev1, dev2)
wtDevices = append(wtDevices, dev3)
var resources cgroups.Resources
resources.CpuPeriod = 100000
resources.CpuQuota = 100000
resources.CpuShares = 100
resources.CpusetCpus = "0"
resources.CpusetMems = "0"
resources.Memory = 900
resources.MemorySwap = 1000
resources.BlkioWeight = 300
cgr, err := New("machine.slice", &resources)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := cgr.Delete(); err != nil {
t.Fatal(err)
}
}()
// TestMode is used in the runc packages for unit tests, works without this as well here.
TestMode = true
err = cgr.Update(&resources)
if err != nil {
t.Fatal(err)
}
if cgr.config.CpuPeriod != 100000 || cgr.config.CpuQuota != 100000 {
t.Fatal("Got the wrong value, set cpu.cfs_period_us failed.")
}
cgr2, err := NewSystemd("machine2.slice", &resources)
if err != nil {
t.Fatal(err)
}
// test CPU Quota adjustment.
u, _, b, _, _, _ := resourcesToProps(&resources, true)
val, ok := u["CPUQuotaPerSecUSec"]
if !ok {
t.Fatal("CPU Quota not parsed.")
}
if val != 1000000 {
t.Fatal("CPU Quota incorrect value expected 1000000 got " + strconv.FormatUint(val, 10))
}
bits := new(big.Int)
cpuset_val := bits.SetBit(bits, 0, 1).Bytes()
cpus, ok := b["AllowedCPUs"]
if !ok {
t.Fatal("Cpuset Cpus not parsed.")
}
if !bytes.Equal(cpus, cpuset_val) {
t.Fatal("Cpuset Cpus incorrect value expected " + string(cpuset_val) + " got " + string(cpus))
}
mems, ok := b["AllowedMemoryNodes"]
if !ok {
t.Fatal("Cpuset Mems not parsed.")
}
if !bytes.Equal(mems, cpuset_val) {
t.Fatal("Cpuset Mems incorrect value expected " + string(cpuset_val) + " got " + string(mems))
}
err = os.Mkdir("/dev/foodevdir", os.ModePerm)
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll("/dev/foodevdir")
c := exec.Command("mknod", "/dev/foodevdir/null", "b", "1", "3")
c.Env = os.Environ()
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err = c.Run()
if err != nil {
t.Fatal(err)
}
c = exec.Command("mknod", "/dev/foodevdir/bar", "b", "3", "10")
c.Env = os.Environ()
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err = c.Run()
if err != nil {
t.Fatal(err)
}
c = exec.Command("mknod", "/dev/foodevdir/bat", "b", "5", "9")
c.Env = os.Environ()
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err = c.Run()
if err != nil {
t.Fatal(err)
}
resources.BlkioThrottleReadBpsDevice = []*cgroups.ThrottleDevice{devices[0]}
resources.BlkioThrottleWriteBpsDevice = []*cgroups.ThrottleDevice{devices[1]}
resources.BlkioWeightDevice = wtDevices
// machine.slice = parent, libpod_pod_ID = path
err = cgr2.CreateSystemdUnit(fmt.Sprintf("%s/%s-%s%s", "machine2.slice", "machine2", "libpod_pod_12345", ".slice"))
if err != nil {
t.Fatal(err)
}
defer func() {
if err := cgr2.Delete(); err != nil {
t.Fatal(err)
}
}()
}
|
