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