cephfs: use new 'ceph fs resize' command when available

Use ceph fs resize command when its available
in the cluster.if its not available fallback to
old style of resizing the subvolume

ceph change log:https://docs.ceph.com/docs/master/releases/nautilus/#v14-2-8-nautilus

Fixes #1002

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna 2020-05-06 19:17:46 +05:30 committed by mergify[bot]
parent 3f0d2b3c4f
commit b065726f19
2 changed files with 49 additions and 1 deletions

View File

@ -361,7 +361,7 @@ func (cs *ControllerServer) ControllerExpandVolume(ctx context.Context, req *csi
RoundOffSize := util.RoundOffBytes(req.GetCapacityRange().GetRequiredBytes())
if err = createVolume(ctx, volOptions, cr, volumeID(volIdentifier.FsSubvolName), RoundOffSize); err != nil {
if err = resizeVolume(ctx, volOptions, cr, volumeID(volIdentifier.FsSubvolName), RoundOffSize); err != nil {
klog.Errorf(util.Log(ctx, "failed to expand volume %s: %v"), volumeID(volIdentifier.FsSubvolName), err)
return nil, status.Error(codes.Internal, err.Error())
}

View File

@ -34,6 +34,12 @@ var (
// Subvolume group create gets called every time the plugin loads, though it doesn't result in error
// its unnecessary
cephfsInit = false
// resizeSupportedList stores the mapping for clusterID and resize is
// supported in the particular cluster
resizeSupportedList = make(map[string]bool)
inValidCommmand = "no valid command found"
)
func getCephRootVolumePathLocalDeprecated(volID volumeID) string {
@ -134,6 +140,48 @@ func createVolume(ctx context.Context, volOptions *volumeOptions, cr *util.Crede
return nil
}
// resizeVolume will try to use ceph fs subvolume resize command to resize the
// subvolume. If the command is not available as a fallback it will use
// CreateVolume to resize the subvolume.
func resizeVolume(ctx context.Context, volOptions *volumeOptions, cr *util.Credentials, volID volumeID, bytesQuota int64) error {
supported := false
ok := false
if supported, ok = resizeSupportedList[volOptions.ClusterID]; supported || !ok {
args := []string{
"fs",
"subvolume",
"resize",
volOptions.FsName,
string(volID),
strconv.FormatInt(bytesQuota, 10),
"--group_name",
volOptions.SubvolumeGroup,
"-m", volOptions.Monitors,
"-c", util.CephConfigPath,
"-n", cephEntityClientPrefix + cr.ID,
"--keyfile=" + cr.KeyFile,
}
err := execCommandErr(
ctx,
"ceph",
args[:]...)
if err == nil {
resizeSupportedList[volOptions.ClusterID] = true
return nil
}
// Incase the error is other than invalid command return error to the caller.
if !strings.Contains(err.Error(), inValidCommmand) {
klog.Errorf(util.Log(ctx, "failed to resize subvolume %s(%s) in fs %s"), string(volID), err, volOptions.FsName)
return err
}
}
resizeSupportedList[volOptions.ClusterID] = false
return createVolume(ctx, volOptions, cr, volID, bytesQuota)
}
func mountCephRoot(ctx context.Context, volID volumeID, volOptions *volumeOptions, adminCr *util.Credentials) error {
cephRoot := getCephRootPathLocalDeprecated(volID)