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rbd: handle when krbdFeatures is zero

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krbdFeatures is set to zero when kernel version < 3.8, i.e. in  case where
/sys/bus/rbd/supported_features is absent and we are unable to prepare
the krbd attributes based on kernel version.

When krbdFeatures is set to zero fallback to NBD only when autofallback
is turned ON.

Fixes: #2678
Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
This commit is contained in:
Prasanna Kumar Kalever
2022-05-13 12:32:11 +05:30
committed by mergify[bot]
parent e53fd87154
commit 83cc1b0e58
3 changed files with 25 additions and 6 deletions
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12
internal/rbd/nodeserver.go
View File

@ -144,6 +144,7 @@ func healerStageTransaction(ctx context.Context, cr *util.Credentials, volOps *r
// this function also receive the credentials and secrets args as it differs in its data.
// The credentials are used directly by functions like voljournal.Connect() and other functions
// like genVolFromVolumeOptions() make use of secrets.
// nolint:gocyclo,cyclop // reduce complexity
func populateRbdVol(
ctx context.Context,
req *csi.NodeStageVolumeRequest,
@ -241,8 +242,15 @@ func populateRbdVol(
return nil, status.Error(codes.Internal, err.Error())
}
if rv.Mounter == rbdDefaultMounter &&
!isKrbdFeatureSupported(ctx, strings.Join(rv.ImageFeatureSet.Names(), ",")) {
features := strings.Join(rv.ImageFeatureSet.Names(), ",")
isFeatureExist, err := isKrbdFeatureSupported(ctx, features)
if err != nil && !errors.Is(err, os.ErrNotExist) {
log.ErrorLog(ctx, "failed checking krbd features %q: %v", features, err)
return nil, status.Error(codes.Internal, err.Error())
}
if rv.Mounter == rbdDefaultMounter && !isFeatureExist {
if !parseBoolOption(ctx, req.GetVolumeContext(), tryOtherMounters, false) {
log.ErrorLog(ctx, "unsupported krbd Feature, set `tryOtherMounters:true` or fix krbd driver")
err = errors.New("unsupported krbd Feature")