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https://github.com/containers/podman.git
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2792e598c7
currently, setting any sort of resource limit in a pod does nothing. With the newly refactored creation process in c/common, podman ca now set resources at a pod level meaning that resource related flags can now be exposed to podman pod create. cgroupfs and systemd are both supported with varying completion. cgroupfs is a much simpler process and one that is virtually complete for all resource types, the flags now just need to be added. systemd on the other hand has to be handeled via the dbus api meaning that the limits need to be passed as recognized properties to systemd. The properties added so far are the ones that podman pod create supports as well as `cpuset-mems` as this will be the next flag I work on. Signed-off-by: Charlie Doern <cdoern@redhat.com>
91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
package libpod
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import (
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"fmt"
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"path/filepath"
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"time"
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"github.com/containers/common/pkg/config"
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"github.com/containers/podman/v4/libpod/define"
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"github.com/containers/podman/v4/pkg/rootless"
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"github.com/containers/storage/pkg/stringid"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// Creates a new, empty pod
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func newPod(runtime *Runtime) *Pod {
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pod := new(Pod)
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pod.config = new(PodConfig)
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pod.config.ID = stringid.GenerateNonCryptoID()
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pod.config.Labels = make(map[string]string)
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pod.config.CreatedTime = time.Now()
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// pod.config.InfraContainer = new(ContainerConfig)
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pod.state = new(podState)
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pod.runtime = runtime
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return pod
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}
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// Update pod state from database
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func (p *Pod) updatePod() error {
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if err := p.runtime.state.UpdatePod(p); err != nil {
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return err
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}
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return nil
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}
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// Save pod state to database
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func (p *Pod) save() error {
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if err := p.runtime.state.SavePod(p); err != nil {
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return errors.Wrapf(err, "error saving pod %s state", p.ID())
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}
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return nil
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}
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// Refresh a pod's state after restart
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// This cannot lock any other pod, but may lock individual containers, as those
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// will have refreshed by the time pod refresh runs.
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func (p *Pod) refresh() error {
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// Need to to an update from the DB to pull potentially-missing state
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if err := p.runtime.state.UpdatePod(p); err != nil {
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return err
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}
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if !p.valid {
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return define.ErrPodRemoved
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}
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// Retrieve the pod's lock
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lock, err := p.runtime.lockManager.AllocateAndRetrieveLock(p.config.LockID)
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if err != nil {
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return errors.Wrapf(err, "error retrieving lock %d for pod %s", p.config.LockID, p.ID())
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}
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p.lock = lock
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// We need to recreate the pod's cgroup
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if p.config.UsePodCgroup {
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switch p.runtime.config.Engine.CgroupManager {
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case config.SystemdCgroupsManager:
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cgroupPath, err := systemdSliceFromPath(p.config.CgroupParent, fmt.Sprintf("libpod_pod_%s", p.ID()), p.ResourceLim())
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if err != nil {
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logrus.Errorf("Creating Cgroup for pod %s: %v", p.ID(), err)
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}
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p.state.CgroupPath = cgroupPath
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case config.CgroupfsCgroupsManager:
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if rootless.IsRootless() && isRootlessCgroupSet(p.config.CgroupParent) {
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p.state.CgroupPath = filepath.Join(p.config.CgroupParent, p.ID())
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logrus.Debugf("setting pod cgroup to %s", p.state.CgroupPath)
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}
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default:
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return errors.Wrapf(define.ErrInvalidArg, "unknown cgroups manager %s specified", p.runtime.config.Engine.CgroupManager)
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}
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}
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// Save changes
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return p.save()
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}
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