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rbd: add functions for initializing global variables

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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>
This commit is contained in:
Niels de Vos
2021-12-09 09:12:37 +01:00
committed by mergify[bot]
parent 3eeac3d36c
commit 8b531f337e
2 changed files with 128 additions and 26 deletions
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48
internal/rbd/rbd_util.go
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@ -200,34 +200,30 @@ type migrationVolID struct {
clusterID string
}
var (
supportedFeatures = map[string]imageFeature{
librbd.FeatureNameLayering: {
needRbdNbd: false,
},
librbd.FeatureNameExclusiveLock: {
needRbdNbd: false,
},
librbd.FeatureNameObjectMap: {
needRbdNbd: false,
dependsOn: []string{librbd.FeatureNameExclusiveLock},
},
librbd.FeatureNameFastDiff: {
needRbdNbd: false,
dependsOn: []string{librbd.FeatureNameObjectMap},
},
librbd.FeatureNameJournaling: {
needRbdNbd: true,
dependsOn: []string{librbd.FeatureNameExclusiveLock},
},
}
var supportedFeatures = map[string]imageFeature{
librbd.FeatureNameLayering: {
needRbdNbd: false,
},
librbd.FeatureNameExclusiveLock: {
needRbdNbd: false,
},
librbd.FeatureNameObjectMap: {
needRbdNbd: false,
dependsOn: []string{librbd.FeatureNameExclusiveLock},
},
librbd.FeatureNameFastDiff: {
needRbdNbd: false,
dependsOn: []string{librbd.FeatureNameObjectMap},
},
librbd.FeatureNameJournaling: {
needRbdNbd: true,
dependsOn: []string{librbd.FeatureNameExclusiveLock},
},
}
krbdFeatures uint64 // krbd features supported by the loaded driver.
)
// getKrbdSupportedFeatures load the module if needed and return supported
// GetKrbdSupportedFeatures load the module if needed and return supported
// features attribute as a string.
func getKrbdSupportedFeatures() (string, error) {
func GetKrbdSupportedFeatures() (string, error) {
// check if the module is loaded or compiled in
_, err := os.Stat(krbdSupportedFeaturesFile)
if err != nil {