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Merge pull request #179 from sboeuf/fix_rollback

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virtcontainers: Fix container creation rollback
This commit is contained in:
Peng Tao 2018-04-04 13:37:46 +08:00 committed by GitHub
commit dda4a4494a
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 26 additions and 22 deletions
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26
virtcontainers/container.go
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@ -420,17 +420,15 @@ func newContainer(pod *Pod, contConfig ContainerConfig) (*Container, error) {
// been performed before the container creation failed.
// - Unplug CPU and memory resources from the VM.
// - Unplug devices from the VM.
func rollbackFailingContainerCreation(c *Container, err error) {
if err != nil && c != nil {
if err2 := c.removeResources(); err2 != nil {
c.Logger().WithError(err2).Error("rollback failed removeResources()")
}
if err2 := c.detachDevices(); err2 != nil {
c.Logger().WithError(err2).Error("rollback failed detachDevices()")
}
if err2 := c.removeDrive(); err2 != nil {
c.Logger().WithError(err2).Error("rollback failed removeDrive()")
}
func (c *Container) rollbackFailingContainerCreation() {
if err := c.removeResources(); err != nil {
c.Logger().WithError(err).Error("rollback failed removeResources()")
}
if err := c.detachDevices(); err != nil {
c.Logger().WithError(err).Error("rollback failed detachDevices()")
}
if err := c.removeDrive(); err != nil {
c.Logger().WithError(err).Error("rollback failed removeDrive()")
}
}
@ -452,7 +450,11 @@ func createContainer(pod *Pod, contConfig ContainerConfig) (c *Container, err er
// In case the container creation fails, the following takes care
// of rolling back all the actions previously performed.
defer rollbackFailingContainerCreation(c, err)
defer func() {
if err != nil {
c.rollbackFailingContainerCreation()
}
}()
if err = c.hotplugDrive(); err != nil {
return

22
virtcontainers/kata_agent.go
View File

@ -603,16 +603,14 @@ func (k *kataAgent) appendDevices(deviceList []*grpc.Device, devices []Device) [
// been performed before the container creation failed.
// - Unmount container volumes.
// - Unmount container rootfs.
func (k *kataAgent) rollbackFailingContainerCreation(c *Container, err error) {
if err != nil {
if c != nil {
if err2 := c.unmountHostMounts(); err2 != nil {
k.Logger().WithError(err2).Error("rollback failed unmountHostMounts()")
}
func (k *kataAgent) rollbackFailingContainerCreation(c *Container) {
if c != nil {
if err2 := c.unmountHostMounts(); err2 != nil {
k.Logger().WithError(err2).Error("rollback failed unmountHostMounts()")
}
if err2 := bindUnmountContainerRootfs(kataHostSharedDir, c.pod.id, c.id); err2 != nil {
k.Logger().WithError(err2).Error("rollback failed bindUnmountContainerRootfs()")
}
if err2 := bindUnmountContainerRootfs(kataHostSharedDir, c.pod.id, c.id); err2 != nil {
k.Logger().WithError(err2).Error("rollback failed bindUnmountContainerRootfs()")
}
}
}
@ -639,7 +637,11 @@ func (k *kataAgent) createContainer(pod *Pod, c *Container) (p *Process, err err
// In case the container creation fails, the following defer statement
// takes care of rolling back actions previously performed.
defer k.rollbackFailingContainerCreation(c, err)
defer func() {
if err != nil {
k.rollbackFailingContainerCreation(c)
}
}()
if c.state.Fstype != "" {
// This is a block based device rootfs.