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Merge pull request #103 from gman0/cephfs-zeroquota

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cephfs: don't set quotas for zero-sized volumes
This commit is contained in:
Huamin Chen 2018-12-03 09:16:03 -05:00 committed by GitHub
commit 9a7ef258fc
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3 changed files with 8 additions and 13 deletions
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4
docs/deploy-cephfs.md
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@ -33,7 +33,7 @@ Parameter | Required | Description
--------- | -------- | -----------
`monitors` | yes | Comma separated list of Ceph monitors (e.g. `192.168.100.1:6789,192.168.100.2:6789,192.168.100.3:6789`)
`mounter` | no | Mount method to be used for this volume. Available options are `kernel` for Ceph kernel client and `fuse` for Ceph FUSE driver. Defaults to "default mounter", see command line arguments.
`provisionVolume` | yes | Mode of operation. BOOL value. If `true`, a new CephFS volume will be provisioned. If `false`, an existing CephFS will be used.
`provisionVolume` | yes | Mode of operation. BOOL value. If `true`, a new CephFS volume will be provisioned. If `false`, an existing volume will be used.
`pool` | for `provisionVolume=true` | Ceph pool into which the volume shall be created
`rootPath` | for `provisionVolume=false` | Root path of an existing CephFS volume
`csiProvisionerSecretName`, `csiNodeStageSecretName` | for Kubernetes | name of the Kubernetes Secret object containing Ceph client credentials. Both parameters should have the same value
@ -49,6 +49,8 @@ User credentials with access to an existing volume
* `userID`: ID of a user client
* `userKey`: key of a user client
Notes on volume size: when provisioning a new volume, `max_bytes` quota attribute for this volume will be set to the requested volume size (see [Ceph quota documentation](http://docs.ceph.com/docs/mimic/cephfs/quota/)). A request for a zero-sized volume means no quota attribute will be set.
## Deployment with Kubernetes
Requires Kubernetes 1.11

11
pkg/cephfs/controllerserver.go
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@ -30,10 +30,6 @@ type controllerServer struct {
*csicommon.DefaultControllerServer
}
const (
oneGB = 1073741824
)
func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
if err := cs.validateCreateVolumeRequest(req); err != nil {
glog.Errorf("CreateVolumeRequest validation failed: %v", err)
@ -86,11 +82,6 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
glog.Infof("cephfs: volume %s is provisioned statically", volId)
}
sz := req.GetCapacityRange().GetRequiredBytes()
if sz == 0 {
sz = oneGB
}
if err = ctrCache.insert(&controllerCacheEntry{VolOptions: *volOptions, VolumeID: volId}); err != nil {
glog.Errorf("failed to store a cache entry for volume %s: %v", volId, err)
return nil, status.Error(codes.Internal, err.Error())
@ -99,7 +90,7 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
return &csi.CreateVolumeResponse{
Volume: &csi.Volume{
Id: string(volId),
CapacityBytes: sz,
CapacityBytes: req.GetCapacityRange().GetRequiredBytes(),
Attributes: req.GetParameters(),
},
}, nil

2
pkg/cephfs/volume.go
View File

@ -81,9 +81,11 @@ func createVolume(volOptions *volumeOptions, adminCr *credentials, volId volumeI
return err
}
if bytesQuota > 0 {
if err := setVolumeAttribute(localVolRoot, "ceph.quota.max_bytes", fmt.Sprintf("%d", bytesQuota)); err != nil {
return err
}
}
if err := setVolumeAttribute(localVolRoot, "ceph.dir.layout.pool", volOptions.Pool); err != nil {
return fmt.Errorf("%v\ncephfs: Does pool '%s' exist?", err, volOptions.Pool)