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Windows 2019 Event 5120 Cluster Shared Volume has entered a paused state because of '(c0000120)

GeorgeMandiliotis-8889 1 Reputation point
2021-08-27T07:32:24.34+00:00

Hi everyone, we have a 3-node Windows 2019 Hyper-V Cluster with iSCSI (and MPIO) connectivity to our storage.
From time to time, we are seeing the following warning message in the Cluster Event log:

Cluster Shared Volume 'Volume3' ('CSV-S Volume3') has entered a paused state because of '(c0000120)'. All I/O will temporarily be queued until a path to the volume is reestablished.

Does anyone know what the c0000120 means?

Thank you in advance, George

Windows for business | Windows Server | Storage high availability | Clustering and high availability
Windows for business | Windows Server | Storage high availability | Other
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  1. Bjarne Abraham 5 Reputation points
    2023-05-26T11:06:38.4033333+00:00

    Have you solved your issue? I've seen the same issue but as far as I was informed by Microsoft, this was a non-critical alert.

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  2. Limitless Technology 39,926 Reputation points
    2021-08-27T13:36:05.737+00:00

    Hello @GeorgeMandiliotis-8889

    It could some error code iSCSI.

    Please have a look on below Microsoft article.

    https://techcommunity.microsoft.com/t5/failover-clustering/troubleshooting-cluster-shared-volume-auto-pauses-8211-event/ba-p/371994

    If the reply was helpful, please don’t forget to upvote or accept as answer.

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