mirrors/ceph-csi
1
0
Fork 0
mirror of https://github.com/ceph/ceph-csi.git synced 2024-12-18 02:50:30 +00:00
Code Issues Packages Projects Releases Wiki Activity

rbd: provide a way to disable the auto fallback to nbd mounter

Browse Source 
This change allows the user to choose not to fallback to NBD mounter
when some ImageFeatures are absent with krbd driver, rather just fail
the NodeStage call.

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
This commit is contained in:
Prasanna Kumar Kalever 2021-10-05 16:17:11 +05:30 committed by mergify[bot]
parent bfc24f6f12
commit 9a3170bf77
6 changed files with 31 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
charts/ceph-csi-rbd/README.md
View File

@ -151,6 +151,7 @@ charts and their default values.
| `storageClass.pool` | Ceph pool into which the RBD image shall be created | `replicapool` |
| `storageClass.thickProvision` | Specifies whether thick provision should be enabled | `false` |
| `storageclass.imageFeatures` | Specifies RBD image features | `layering` |
| `storageclass.tryOtherMounters` | Specifies whether to try other mounters in case if the current mounter fails to mount the rbd image for any reason | `false` |
| `storageClass.mounter` | Specifies RBD mounter | `""` |
| `storageClass.cephLogDir` | ceph client log location, it is the target bindmount path used inside container | `"/var/log/ceph"` |
| `storageClass.cephLogStrategy` | ceph client log strategy, available options `remove` or `compress` or `preserve` | `"remove"` |

3
charts/ceph-csi-rbd/templates/storageclass.yaml
View File

@ -19,6 +19,9 @@ parameters:
pool: {{ .Values.storageClass.pool }}
imageFeatures: {{ .Values.storageClass.imageFeatures }}
thickProvision: {{ .Values.storageClass.thickProvision | quote}}
{{- if .Values.storageClass.tryOtherMounters }}
tryOtherMounters: {{ .Values.storageClass.tryOtherMounters | quote}}
{{- end }}
{{- if .Values.storageClass.mounter }}
mounter: {{ .Values.storageClass.mounter }}
{{- end }}

9
charts/ceph-csi-rbd/values.yaml
View File

@ -289,6 +289,15 @@ storageClass:
# imageFeatures: layering,journaling,exclusive-lock
imageFeatures: layering
# (optional) Specifies whether to try other mounters in case if the current
# mounter fails to mount the rbd image for any reason. True means fallback
# to next mounter, default is set to false.
# Note: tryOtherMounters is currently useful to fallback from krbd to rbd-nbd
# in case if any of the specified imageFeatures is not supported by krbd
# driver on node scheduled for application pod launch, but in the future this
# should work with any mounter type.
# tryOtherMounters: false
# (optional) uncomment the following to use rbd-nbd as mounter
# on supported nodes
# mounter: rbd-nbd

2
docs/deploy-rbd.md
View File

@ -56,7 +56,7 @@ make image-cephcsi
| `volumeNamePrefix` | no | Prefix to use for naming RBD images (defaults to `csi-vol-`). |
| `snapshotNamePrefix` | no | Prefix to use for naming RBD snapshot images (defaults to `csi-snap-`). |
| `imageFeatures` | yes | RBD image features. CSI RBD currently supports `layering`, `journaling`, `exclusive-lock` features. If `journaling` is enabled, must enable `exclusive-lock` too. See [man pages](http://docs.ceph.com/docs/master/man/8/rbd/#cmdoption-rbd-image-feature) Note that the required support for [object-map and fast-diff were added in 5.3 and journaling does not have KRBD support yet](https://docs.ceph.com/en/latest/rbd/rbd-config-ref/#image-features). deep-flatten is added for cloned images. |
| |
| `tryOtherMounters` | no | Specifies whether to try other mounters in case if the current mounter fails to mount the rbd image for any reason |
| `mapOptions` | no | Map options to use when mapping rbd image. See [krbd](https://docs.ceph.com/docs/master/man/8/rbd/#kernel-rbd-krbd-options) and [nbd](https://docs.ceph.com/docs/master/man/8/rbd-nbd/#options) options. |
| `unmapOptions` | no | Unmap options to use when unmapping rbd image. See [krbd](https://docs.ceph.com/docs/master/man/8/rbd/#kernel-rbd-krbd-options) and [nbd](https://docs.ceph.com/docs/master/man/8/rbd-nbd/#options) options. |
| `csi.storage.k8s.io/provisioner-secret-name`, `csi.storage.k8s.io/node-stage-secret-name` | yes (for Kubernetes) | name of the Kubernetes Secret object containing Ceph client credentials. Both parameters should have the same value |

9
examples/rbd/storageclass.yaml
View File

@ -39,6 +39,15 @@ parameters:
# imageFeatures: layering,journaling,exclusive-lock
imageFeatures: layering
# (optional) Specifies whether to try other mounters in case if the current
# mounter fails to mount the rbd image for any reason. True means fallback
# to next mounter, default is set to false.
# Note: tryOtherMounters is currently useful to fallback from krbd to rbd-nbd
# in case if any of the specified imageFeatures is not supported by krbd
# driver on node scheduled for application pod launch, but in the future this
# should work with any mounter type.
# tryOtherMounters: false
# (optional) mapOptions is a comma-separated list of map options.
# For krbd options refer
# https://docs.ceph.com/docs/master/man/8/rbd/#kernel-rbd-krbd-options

10
internal/rbd/nodeserver.go
View File

@ -68,8 +68,9 @@ const (
xfsReflinkNoSupport
xfsReflinkSupport
staticVol = "staticVolume"
volHealerCtx = "volumeHealerContext"
staticVol = "staticVolume"
volHealerCtx = "volumeHealerContext"
tryOtherMounters = "tryOtherMounters"
)
var (
@ -218,6 +219,11 @@ func populateRbdVol(
krbdSupported := false
if req.GetVolumeContext()["mounter"] != rbdNbdMounter {
krbdSupported = isKrbdFeatureSupported(ctx, req.GetVolumeContext()["imageFeatures"])
if !krbdSupported && !parseBoolOption(ctx, req.GetVolumeContext(), tryOtherMounters, false) {
log.ErrorLog(ctx, "unsupported krbd Feature, set `tryOtherMounters:true` or fix krbd driver")
return nil, status.Errorf(codes.Internal, "unsupported krbd Feature")
}
}
if krbdSupported {
rv.MapOptions = req.GetVolumeContext()["mapOptions"]