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rbd: add skipForceFlatten flag

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added skipForceFlatten flag to skip
the image deptha and skip image flattening.
This will be very useful if the kernel is
not listed in cephcsi which supports deep
flatten fauture.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
2020-06-24 13:42:12 +05:30
committed by mergify[bot]
parent e3a63029a3
commit b085577a4f
7 changed files with 58 additions and 0 deletions
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40
internal/rbd/nodeserver.go
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@ -27,6 +27,7 @@ import (
"github.com/ceph/ceph-csi/internal/journal"
"github.com/ceph/ceph-csi/internal/util"
librbd "github.com/ceph/go-ceph/rbd"
"github.com/container-storage-interface/spec/lib/go/csi"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
@ -60,6 +61,22 @@ type stageTransaction struct {
devicePath string
}
var (
kernelRelease = ""
// deepFlattenSupport holds the list of kernel which support mapping rbd
// image with deep-flatten image feature
deepFlattenSupport = []util.KernelVersion{
{
Version: 5,
PatchLevel: 2,
SubLevel: 0,
ExtraVersion: 0,
Distribution: "",
Backport: false,
}, // standard 5.2+ versions
}
)
// NodeStageVolume mounts the volume to a staging path on the node.
// Implementation notes:
// - stagingTargetPath is the directory passed in the request where the volume needs to be staged
@ -205,6 +222,8 @@ func (ns *NodeServer) stageTransaction(ctx context.Context, req *csi.NodeStageVo
var err error
var readOnly bool
var feature bool
var cr *util.Credentials
cr, err = util.NewUserCredentials(req.GetSecrets())
if err != nil {
@ -226,6 +245,27 @@ func (ns *NodeServer) stageTransaction(ctx context.Context, req *csi.NodeStageVo
volOptions.readOnly = true
}
if kernelRelease == "" {
// fetch the current running kernel info
kernelRelease, err = util.GetKernelVersion()
if err != nil {
return transaction, err
}
}
if !util.CheckKernelSupport(kernelRelease, deepFlattenSupport) {
if !skipForceFlatten {
feature, err = volOptions.checkImageChainHasFeature(ctx, librbd.FeatureDeepFlatten)
if err != nil {
return transaction, err
}
if feature {
err = volOptions.flattenRbdImage(ctx, cr, true)
if err != nil {
return transaction, err
}
}
}
}
// Mapping RBD image
var devicePath string
devicePath, err = attachRBDImage(ctx, volOptions, cr)