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package main
import (
"context"
"slices"
"strings"
"github.com/lxc/incus/v6/internal/server/backup"
"github.com/lxc/incus/v6/internal/server/db"
"github.com/lxc/incus/v6/internal/server/instance"
"github.com/lxc/incus/v6/internal/server/state"
storagePools "github.com/lxc/incus/v6/internal/server/storage"
"github.com/lxc/incus/v6/internal/version"
"github.com/lxc/incus/v6/shared/api"
)
var supportedVolumeTypes = []int{db.StoragePoolVolumeTypeContainer, db.StoragePoolVolumeTypeVM, db.StoragePoolVolumeTypeCustom, db.StoragePoolVolumeTypeImage}
func storagePoolVolumeUpdateUsers(ctx context.Context, s *state.State, projectName string, oldPoolName string, oldVol *api.StorageVolume, newPoolName string, newVol *api.StorageVolume) error {
// Update all instances that are using the volume with a local (non-expanded) device.
err := storagePools.VolumeUsedByInstanceDevices(s, oldPoolName, projectName, oldVol, false, func(dbInst db.InstanceArgs, project api.Project, usedByDevices []string) error {
inst, err := instance.Load(s, dbInst, project)
if err != nil {
return err
}
localDevices := inst.LocalDevices()
for _, devName := range usedByDevices {
_, exists := localDevices[devName]
if exists {
localDevices[devName]["pool"] = newPoolName
volFields := strings.SplitN(localDevices[devName]["source"], "/", 2)
volFields[0] = newVol.Name
localDevices[devName]["source"] = strings.Join(volFields, "/")
}
}
args := db.InstanceArgs{
Architecture: inst.Architecture(),
Description: inst.Description(),
Config: inst.LocalConfig(),
Devices: localDevices,
Ephemeral: inst.IsEphemeral(),
Profiles: inst.Profiles(),
Project: inst.Project().Name,
Type: inst.Type(),
Snapshot: inst.IsSnapshot(),
}
err = inst.Update(args, false)
if err != nil {
return err
}
return nil
})
if err != nil {
return err
}
// Update all profiles that are using the volume with a device.
err = storagePools.VolumeUsedByProfileDevices(s, oldPoolName, projectName, oldVol, func(profileID int64, profile api.Profile, p api.Project, usedByDevices []string) error {
for name, dev := range profile.Devices {
if slices.Contains(usedByDevices, name) {
dev["pool"] = newPoolName
volFields := strings.SplitN(dev["source"], "/", 2)
volFields[0] = newVol.Name
dev["source"] = strings.Join(volFields, "/")
}
}
pUpdate := api.ProfilePut{}
pUpdate.Config = profile.Config
pUpdate.Description = profile.Description
pUpdate.Devices = profile.Devices
err = doProfileUpdate(ctx, s, p, profile.Name, &profile, pUpdate)
if err != nil {
return err
}
return nil
})
if err != nil {
return err
}
return nil
}
// storagePoolVolumeUsedByGet returns a list of URL resources that use the volume.
func storagePoolVolumeUsedByGet(s *state.State, requestProjectName string, poolName string, vol *db.StorageVolume) ([]string, error) {
// Handle instance volumes.
if vol.Type == db.StoragePoolVolumeTypeNameContainer || vol.Type == db.StoragePoolVolumeTypeNameVM {
volName, snapName, isSnap := api.GetParentAndSnapshotName(vol.Name)
if isSnap {
return []string{api.NewURL().Path(version.APIVersion, "instances", volName, "snapshots", snapName).Project(vol.Project).String()}, nil
}
return []string{api.NewURL().Path(version.APIVersion, "instances", volName).Project(vol.Project).String()}, nil
}
// Handle image volumes.
if vol.Type == db.StoragePoolVolumeTypeNameImage {
return []string{api.NewURL().Path(version.APIVersion, "images", vol.Name).Project(requestProjectName).Target(vol.Location).String()}, nil
}
// Check if the daemon itself is using it.
used, err := storagePools.VolumeUsedByDaemon(s, poolName, vol.Name)
if err != nil {
return []string{}, err
}
if used {
return []string{api.NewURL().Path(version.APIVersion).String()}, nil
}
// Look for instances using this volume.
volumeUsedBy := []string{}
// Pass false to expandDevices, as we only want to see instances directly using a volume, rather than their
// profiles using a volume.
err = storagePools.VolumeUsedByInstanceDevices(s, poolName, vol.Project, &vol.StorageVolume, false, func(inst db.InstanceArgs, p api.Project, usedByDevices []string) error {
volumeUsedBy = append(volumeUsedBy, api.NewURL().Path(version.APIVersion, "instances", inst.Name).Project(inst.Project).String())
return nil
})
if err != nil {
return []string{}, err
}
err = storagePools.VolumeUsedByProfileDevices(s, poolName, requestProjectName, &vol.StorageVolume, func(profileID int64, profile api.Profile, p api.Project, usedByDevices []string) error {
volumeUsedBy = append(volumeUsedBy, api.NewURL().Path(version.APIVersion, "profiles", profile.Name).Project(p.Name).String())
return nil
})
if err != nil {
return []string{}, err
}
return volumeUsedBy, nil
}
func storagePoolVolumeBackupLoadByName(ctx context.Context, s *state.State, projectName, poolName, backupName string) (*backup.VolumeBackup, error) {
var b db.StoragePoolVolumeBackup
err := s.DB.Cluster.Transaction(ctx, func(ctx context.Context, tx *db.ClusterTx) error {
var err error
b, err = tx.GetStoragePoolVolumeBackup(ctx, projectName, poolName, backupName)
return err
})
if err != nil {
return nil, err
}
volumeName := strings.Split(backupName, "/")[0]
backup := backup.NewVolumeBackup(s, projectName, poolName, volumeName, b.ID, b.Name, b.CreationDate, b.ExpiryDate, b.VolumeOnly, b.OptimizedStorage)
return backup, nil
}
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