mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 00:10:20 +00:00
8b531f337e
When the rbd-driver starts, it initializes some global (yuck!) variables in the rbd package. Because the rbd-driver is moved out into its own package, these variables can not easily be set anymore. Introcude SetGlobalInt(), SetGlobalBool() and InitJournals() so that the rbd-driver can configure the rbd package. Signed-off-by: Niels de Vos <ndevos@redhat.com>
107 lines
3.5 KiB
Go
107 lines
3.5 KiB
Go
/*
|
|
Copyright 2021 The Ceph-CSI Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package rbd
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/ceph/ceph-csi/internal/journal"
|
|
)
|
|
|
|
const (
|
|
// volIDVersion is the version number of volume ID encoding scheme.
|
|
volIDVersion uint16 = 1
|
|
)
|
|
|
|
var (
|
|
// CSIInstanceID is the instance ID that is unique to an instance of CSI, used when sharing
|
|
// ceph clusters across CSI instances, to differentiate omap names per CSI instance.
|
|
CSIInstanceID = "default"
|
|
|
|
// volJournal and snapJournal are used to maintain RADOS based journals for CO generated
|
|
// VolumeName to backing RBD images.
|
|
volJournal *journal.Config
|
|
snapJournal *journal.Config
|
|
// rbdHardMaxCloneDepth is the hard limit for maximum number of nested volume clones that are taken before flatten
|
|
// occurs.
|
|
rbdHardMaxCloneDepth uint
|
|
|
|
// rbdSoftMaxCloneDepth is the soft limit for maximum number of nested volume clones that are taken before flatten
|
|
// occurs.
|
|
rbdSoftMaxCloneDepth uint
|
|
maxSnapshotsOnImage uint
|
|
minSnapshotsOnImageToStartFlatten uint
|
|
skipForceFlatten bool
|
|
|
|
// krbd features supported by the loaded driver.
|
|
krbdFeatures uint
|
|
)
|
|
|
|
// SetGlobalInt provides a way for the rbd-driver to configure global variables
|
|
// in the rbd package.
|
|
//
|
|
// TODO: these global variables should be set in the ControllerService and
|
|
// NodeService where appropriate. Using global variables limits the ability to
|
|
// configure these options based on the Ceph cluster or StorageClass.
|
|
func SetGlobalInt(name string, value uint) {
|
|
switch name {
|
|
case "rbdHardMaxCloneDepth":
|
|
rbdHardMaxCloneDepth = value
|
|
case "rbdSoftMaxCloneDepth":
|
|
rbdSoftMaxCloneDepth = value
|
|
case "maxSnapshotsOnImage":
|
|
maxSnapshotsOnImage = value
|
|
case "minSnapshotsOnImageToStartFlatten":
|
|
minSnapshotsOnImageToStartFlatten = value
|
|
case "krbdFeatures":
|
|
krbdFeatures = value
|
|
default:
|
|
panic(fmt.Sprintf("BUG: can not set unknown variable %q", name))
|
|
}
|
|
}
|
|
|
|
// SetGlobalBool provides a way for the rbd-driver to configure global
|
|
// variables in the rbd package.
|
|
//
|
|
// TODO: these global variables should be set in the ControllerService and
|
|
// NodeService where appropriate. Using global variables limits the ability to
|
|
// configure these options based on the Ceph cluster or StorageClass.
|
|
func SetGlobalBool(name string, value bool) {
|
|
switch name {
|
|
case "skipForceFlatten":
|
|
skipForceFlatten = value
|
|
default:
|
|
panic(fmt.Sprintf("BUG: can not set unknown variable %q", name))
|
|
}
|
|
}
|
|
|
|
// InitJournals initializes the global journals that are used by the rbd
|
|
// package. This is called from the rbd-driver on startup.
|
|
//
|
|
// TODO: these global journals should be set in the ControllerService and
|
|
// NodeService where appropriate. Using global journals limits the ability to
|
|
// configure these options based on the Ceph cluster or StorageClass.
|
|
func InitJournals(instance string) {
|
|
// Use passed in instance ID, if provided for omap suffix naming
|
|
if instance != "" {
|
|
CSIInstanceID = instance
|
|
}
|
|
|
|
volJournal = journal.NewCSIVolumeJournal(CSIInstanceID)
|
|
snapJournal = journal.NewCSISnapshotJournal(CSIInstanceID)
|
|
}
|