feat(csi-driver): add pre-publish hook to cleanup stale entries #905
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905: feat(csi-driver): add pre-publish hook to cleanup stale entries r=Abhinandan-Purkait a=Abhinandan-Purkait Scenario: If an node undergoes a network partition and the application pods on it are moved by out-of-service taint then it can happen that the stale mount paths and the nvme controllers get left around, because CSI NodeUnstage was never called. Once the node comes back and joins the cluster and the application pod comes back to the same node, it can happen that the stale nvme path gets live again causing the existing buffer data to be flushed potentially causing data corruption. Changes: This adds a pre-publish hook that can intercept the ControllerPublish and issue cleanup on the node if stale entries are detected. Co-authored-by: Abhinandan Purkait <purkaitabhinandan@gmail.com>
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905: feat(csi-driver): add pre-publish hook to cleanup stale entries r=Abhinandan-Purkait a=Abhinandan-Purkait Scenario: If an node undergoes a network partition and the application pods on it are moved by out-of-service taint then it can happen that the stale mount paths and the nvme controllers get left around, because CSI NodeUnstage was never called. Once the node comes back and joins the cluster and the application pod comes back to the same node, it can happen that the stale nvme path gets live again causing the existing buffer data to be flushed potentially causing data corruption. Changes: This adds a pre-publish hook that can intercept the ControllerPublish and issue cleanup on the node if stale entries are detected. Co-authored-by: Abhinandan Purkait <purkaitabhinandan@gmail.com>
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Signed-off-by: Abhinandan Purkait <purkaitabhinandan@gmail.com>
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Scenario:
If an node undergoes a network partition and the application pods on it are moved by out-of-service taint then it can happen that the stale mount paths and the nvme controllers get left around, because CSI NodeUnstage was never called.
Once the node comes back and joins the cluster and the application pod comes back to the same node, it can happen that the stale nvme path gets live again causing the existing buffer data to be flushed potentially causing data corruption.
Changes:
This adds a pre-publish hook that can intercept the ControllerPublish and issue cleanup on the node if stale entries are detected.