func (j Job) clean(dataset string) error {
mutexFor(dataset).Lock()
defer mutexFor(dataset).Unlock()
ds, err := zfs.GetDataset(dataset)
if err != nil {
return err
}
snaps, err := ds.Snapshots()
if err != nil {
return err
}
prefix := dataset + "@" + j.Family + "-"
var matching []*zfs.Dataset
for _, snap := range snaps {
if strings.HasPrefix(snap.Name, prefix) {
matching = append(matching, snap)
}
}
sort.Sort(datasetList(matching))
if len(matching) <= j.Keep {
return nil
}
var flags zfs.DestroyFlag
if j.Recursive {
flags |= zfs.DestroyRecursive
}
for _, snap := range matching[:len(matching)-j.Keep] {
if err := snap.Destroy(flags); err != nil {
return err
}
if verbose {
fmt.Println("Destroyed", snap.Name)
}
}
return nil
}
func (j Job) snapshot(dataset, name string) error {
mutexFor(dataset).Lock()
defer mutexFor(dataset).Unlock()
ds, err := zfs.GetDataset(dataset)
if err != nil {
return err
}
ss, err := ds.Snapshot(name, j.Recursive)
if err != nil {
return err
}
if verbose {
fmt.Println("Created", ss.Name)
}
return nil
}
