mirror of
https://github.com/containers/podman.git
synced 2025-05-29 14:06:29 +08:00

This will require a 'podman system renumber' after being applied to get lock numbers for existing volumes. Add the DB backend code for rewriting volume configs and use it for updating lock numbers as part of 'system renumber'. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
78 lines
1.9 KiB
Go
78 lines
1.9 KiB
Go
package libpod
|
|
|
|
import (
|
|
"github.com/containers/libpod/libpod/events"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// renumberLocks reassigns lock numbers for all containers and pods in the
|
|
// state.
|
|
// TODO: It would be desirable to make it impossible to call this until all
|
|
// other libpod sessions are dead.
|
|
// Possibly use a read-write file lock, with all non-renumber podmans owning the
|
|
// lock as read, renumber attempting to take a write lock?
|
|
// The alternative is some sort of session tracking, and I don't know how
|
|
// reliable that can be.
|
|
func (r *Runtime) renumberLocks() error {
|
|
// Start off by deallocating all locks
|
|
if err := r.lockManager.FreeAllLocks(); err != nil {
|
|
return err
|
|
}
|
|
|
|
allCtrs, err := r.state.AllContainers()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, ctr := range allCtrs {
|
|
lock, err := r.lockManager.AllocateLock()
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error allocating lock for container %s", ctr.ID())
|
|
}
|
|
|
|
ctr.config.LockID = lock.ID()
|
|
|
|
// Write the new lock ID
|
|
if err := r.state.RewriteContainerConfig(ctr, ctr.config); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
allPods, err := r.state.AllPods()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, pod := range allPods {
|
|
lock, err := r.lockManager.AllocateLock()
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error allocating lock for pod %s", pod.ID())
|
|
}
|
|
|
|
pod.config.LockID = lock.ID()
|
|
|
|
// Write the new lock ID
|
|
if err := r.state.RewritePodConfig(pod, pod.config); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
allVols, err := r.state.AllVolumes()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, vol := range allVols {
|
|
lock, err := r.lockManager.AllocateLock()
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error allocating lock for volume %s", vol.Name())
|
|
}
|
|
|
|
vol.config.LockID = lock.ID()
|
|
|
|
// Write the new lock ID
|
|
if err := r.state.RewriteVolumeConfig(vol, vol.config); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
r.newSystemEvent(events.Renumber)
|
|
|
|
return nil
|
|
}
|