kernel hung when trying to unmount

[andyzhangx]

OS would still hung when I am trying to unmount dysk, I am using

      - name: flexvol-driver-installer
        image: "khenidak/dysk-flexvol-installer:0.6"

      - name: kernel-module-installer
        image: "khenidak/dysk-installer:0.6"

azureuser@k8s-agentpool-66825246-1:/etc/kubernetes/volumeplugins/azure~dysk$ sudo ./dyskctl list
Type                            Name                            VHD                             SizeGB                          AccountName                     Path
RW                              dyskNRcq2J7M                    Yes                             5                               andymghyb186                    /dysks/dyskTUdX8WZR.vhd
azureuser@k8s-agentpool-66825246-1:/etc/kubernetes/volumeplugins/azure~dysk$ sudo ./dyskctl unmount -d dyskNRcq2J7M
hung here !!!

And I have checked in azure portal, status of /dysks/dyskTUdX8WZR.vhd is leased, also I noticed some vhd is broken, which does it mean?

@khenidak

[andyzhangx]

Moreover, have you tried reboot after mounting a dysk? Reboot will cost a lot more time which is abnormal.

[khenidak]

Lease broken before or after dyskctl unmount -d ..?