How to monitor snapshot deletion using esxtop command
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How to monitor snapshot deletion using esxtop command


Article ID: 340006


Updated On:


VMware vSphere ESXi


This article provides steps to monitor the snapshot deletion using esxtop when time stamps are not updating for virtual-mode RDM base disks.


VMware vSphere ESXi 5.5
VMware vSphere ESXi 5.1
VMware vSphere ESXi 5.0


To monitor the snapshot deletion using esxtop in ESXi 4.x/5.x:

  1. Log in as root to the ESX/ESXi host using SSH.
  2. Run the esxtop command.

    Note: This command works only if the virtual machine is powered on.

  3. Press V to see only running virtual machines.

    Note: This is not the same as using the v option.

  4. Find the virtual machine running the consolidation.
  5. Type e to expand.
  6. Enter the Group World ID (value from GID column).
  7. Press Enter.
  8. Make a note of the World ID (ID column) of the snapshot consolidation process:

    • In ESX/ESXi 4.x, the process is called SnapshotVMXCombiner.
    • In ESXi 5.x, the process is called vmx-SnapshotVMX.

  9. Type u to display the disk device statistics.
  10. Type e to expand and enter the device where the snapshot consolidation process is writing to.

    For example:

    • For a regular vmdk file, the device is the datastore that the flat file is located.
    • For a flat vmdk, identifying the datastore device ID can be done by running esxcfg-scsidevs -m.
    • For RDM, the vmkfstools -q against the pointer file reveals the vml ID, which needs to be correlated with the output of ls -l /vmfs/devices/disks/ to get the device ID.

  11. Identify the Group World ID from step 6.

    Note: You may need to sort by MBREAD/s ( press R) or MBWRTN/s (press T) to see the process at the top of the screen.

  12. Review the number IOPS and throughput for the Consolidation process (WRITES/s and MBWRTN/s columns) to ensure that there is activity and the process is working.

Additional Information

如何使用 esxtop 命令监控快照删除