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datashim-io / datashim

A kubernetes based framework for hassle free handling of datasets
http://datashim-io.github.io/datashim
Apache License 2.0
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Unmounting CSI-S3 volumes results in errors in kubelet #335

Open srikumar003 opened 8 months ago

srikumar003 commented 8 months ago

Issue surfaced by @starpit. Unmounting CSI-volumes results in the following errors appearing in the kubelet logs:

: E0304 16:11:05.124817 11037 reconciler_common.go:169] “operationExecutor.UnmountVolume failed (controllerAttachDetachEnabled false) for volume \“workdir\” (UniqueName: \“[kubernetes.io/csi/ch.ctrox.csi.s3-driver^pvc-e7d1c230-6891-4f98-be7f-689848357a04](http://kubernetes.io/csi/ch.ctrox.csi.s3-driver%5Epvc-e7d1c230-6891-4f98-be7f-689848357a04)\“) pod \“27c8697f-d40b-4a1a-b0c4-c191b015619f\” (UID: \“27c8697f-d40b-4a1a-b0c4-c191b015619f\“) : UnmountVolume.NewUnmounter failed for volume \“workdir\” (UniqueName: \“[kubernetes.io/csi/ch.ctrox.csi.s3-driver^pvc-e7d1c230-6891-4f98-be7f-689848357a04](http://kubernetes.io/csi/ch.ctrox.csi.s3-driver%5Epvc-e7d1c230-6891-4f98-be7f-689848357a04)\“) pod \“27c8697f-d40b-4a1a-b0c4-c191b015619f\” (UID: \“27c8697f-d40b-4a1a-b0c4-c191b015619f\“) : [kubernetes.io/csi](http://kubernetes.io/csi): unmounter failed to load volume data file [/var/data/kubelet/pods/27c8697f-d40b-4a1a-b0c4-c191b015619f/volumes/kubernetes.io~csi/pvc-e7d1c230-6891-4f98-be7f-689848357a04/mount]: [kubernetes.io/csi](http://kubernetes.io/csi): failed to open volume data file [/var/data/kubelet/pods/27c8697f-d40b-4a1a-b0c4-c191b015619f/volumes/kubernetes.io~csi/pvc-e7d1c230-6891-4f98-be7f-689848357a04/vol_data.json]: open /var/data/kubelet/pods/27c8697f-d40b-4a1a-b0c4-c191b015619f/volumes/kubernetes.io~csi/pvc-e7d1c230-6891-4f98-be7f-689848357a04/vol_data.json: no such file or directory” err=“UnmountVolume.NewUnmounter failed for volume \“workdir\” (UniqueName: \“[kubernetes.io/csi/ch.ctrox.csi.s3-driver^pvc-e7d1c230-6891-4f98-be7f-689848357a04](http://kubernetes.io/csi/ch.ctrox.csi.s3-driver%5Epvc-e7d1c230-6891-4f98-be7f-689848357a04)\“) pod \“27c8697f-d40b-4a1a-b0c4-c191b015619f\” (UID: \“27c8697f-d40b-4a1a-b0c4-c191b015619f\“) : [kubernetes.io/csi](http://kubernetes.io/csi): unmounter failed to load volume data file [/var/data/kubelet/pods/27c8697f-d40b-4a1a-b0c4-c191b015619f/volumes/kubernetes.io~csi/pvc-e7d1c230-6891-4f98-be7f-689848357a04/mount]: [kubernetes.io/csi](http://kubernetes.io/csi): failed to open volume data file [/var/data/kubelet/pods/27c8697f-d40b-4a1a-b0c4-c191b015619f/volumes/kubernetes.io~csi/pvc-e7d1c230-6891-4f98-be7f-689848357a04/vol_data.json]: open /var/data/kubelet/pods/27c8697f-d40b-4a1a-b0c4-c191b015619f/volumes/kubernetes.io~csi/pvc-e7d1c230-6891-4f98-be7f-689848357a04/vol_data.json: no such file or

when i log in to the node and look for that path… it truly doesn’t exist. but the directory does: ls /host/var/data/kubelet/pods/d6a38336-a6b1-4f3a-92d2-b0198971391b/volumes/kubernetes.io~csi/pvc-3616d887-9376-42e5-a6a8-baec51ea2684/ vol_data.json

Cluster details: 

Client Version: 4.12.9
Kustomize Version: v4.5.7
Server Version: 4.14.12
Kubernetes Version: v1.27.10+28ed2d7
srikumar003 commented 8 months ago

Seems related to this issue in Kubernetes CSI: https://github.com/kubernetes/kubernetes/issues/116847