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Dell PowerProtect Data Manager Appliance 5.12.0.1 Network Attached Storage User Guide

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Clean up stale containers and snapshots when backups hang

When NAS backups hang or are unresponsive, it is recommended to clean up any stale containers on the NAS proxy host, as well as any stale snapshots created by PowerProtect Data Manager Appliance on the NAS appliance.

Clean up stale containers

Perform the following steps to clean up stale containers:

  1. Obtain the credentials of the NAS proxy host.
  2. Log in to the PowerProtect Data Manager Appliance server console using administrator credentials, and then switch to the root user.
  3. Obtain the list of proxy hosts deployed by running the following commands:

    source /opt/emc/vmdirect/unit/vmdirect.env

    source /opt/emc/vmdirect/bin/vproxymgmt get -secret

  4. Using the host details obtained in the previous step, log in to the required NAS proxy host as an administrator, and then switch to the root user.
  5. Run the following command to list the running containers and identify any containers that require clean up:

    docker ps -a

    When a backup is hung, the container NET I/O is unchanged.

  6. Clean up the stale container(s) by running the following command:

    docker rm -f container ID

Clean up stale snapshots

Perform the following steps to clean up stale snapshots created by PowerProtect Data Manager Appliance:

  1. Log in to the PowerProtect Data Manager Appliance UI.
  2. In the left navigation pane, select Jobs > Asset Jobs.
  3. Select the backup job that is hung, and then click Export Log to download the log file.
  4. Obtain the snapshot ID by searching for text Snapshot Name : within the NAS agent log file.
  5. Delete the snapshot.

    For PowerScale, log in to the NAS management console and perform the following steps:

    • Select Data Protection > SnapshotIQ to display the snapshots and identify the snapshot ID to be cleaned up.
    • Select this snapshot and click Delete.

    For Unity, log in to the NAS management console and perform the following steps:

    • Under File System, select the appropriate share name.
    • Click Edit, and then select the Snapshot tab in the Properties window to display the snapshots and identify the snapshot ID to be cleaned up.
    • Select this snapshot and click Delete.
  6. Clean up the export path.

    For PowerScale:

    • In the NAS management console, select the Protocols tab.
    • For the file system type, select Windows Sharing(SMB) or UNIX Sharing(NFS).
    • Select the appropriate snapshot name and click Delete.

    For Unity:

    • In the NAS management console, select either the SMB Shares or NFS shares tab, based on the file system type.
    • Under the Local Path field, search for the Snapshot Name. If the entry exists, select the entry and click Delete.
    NOTE For Unity, export path cleanup is typically not required because this occurs during snapshot cleanup. However, this step is recommended to verify that the clean up was successful.

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