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Cannot create a quiesced snapshot because the snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine (1018194)

Last Updated: 4/5/2021Categories: TroubleshootingTotal Views: 125138Language:
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If you require additional help from technical support, please use Skyline Advisor to initiate a Log Assist to reduce time to upload logs. TSEs can also initiate logs to reduce effort.

Symptoms

Creating a quiesced snapshot fails.

While taking a snapshot, you see the error:

Cannot create a quiesced snapshot because the snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine

You experience this issue when you are doing a hot clone of a virtual machine. You see the error:

An error occurred while quiescing the virtual machine. See the virtual machine's event log for details 'VssSyncStart' operation failed: IDispatch error #8449 (0x80042301)

The vpxa.log file contains entries similar to:

2010-10-10T22:53:31.077Z [45EEEB90 info 'Default' opID=D1D8F924-00002337-83] [VpxLRO] -- ERROR task-768 -- -- vpxapi.VpxaService.createSnapshot: vim.fault.ApplicationQuiesceFault:
--> Result:
(vim.fault.ApplicationQuiesceFault) {
dynamicType = unset,
faultCause = (vmodl.MethodFault) null,
faultMessage = (vmodl.LocalizableMessage) [
(vmodl.LocalizableMessage) {
dynamicType = unset,
key = "msg.snapshot.quiesce.vmerr",
arg = (vmodl.KeyAnyValue) [
(vmodl.KeyAnyValue) {
dynamicType = unset,
key = "1",
value = "5",
},
(vmodl.KeyAnyValue) {
dynamicType = unset,
key = "2",
value = "'VssSyncStart' operation failed: IDispatch error #8449 (0x80042301)",
}
],
message = "The Guest OS has reported an error during quiescing.
--> The error code was: 5
--> The error message was: 'VssSyncStart' operation failed: IDispatch error #8449 (0x80042301)
--> ",
}
],
msg = "An error occurred while quiescing the virtual machine. See the virtual machine's event log for details."
}
--> Args:
--> Arg vmid:6
--> Arg name:"clone-temp-1286776661914351"
--> Arg description:
"This temporary snapshot is taken as part of the clone operation. The temporary snapshot will be deleted once the clone operation is complete."
--> Arg memory:false
--> Arg quiesce:true

The vmware.log file of the virtual machine contains entries similar to:

2019-07-25T12:54:58.332Z| vmx| I120: Msg_Post: Warning
2019-07-25T12:54:58.333Z| vmx| I120: [msg.snapshot.quiesce.vmerr] The guest OS has reported an error during quiescing.
2019-07-25T12:54:58.333Z| vmx| I120+ The error code was: 5
2019-07-25T12:54:58.333Z| vmx| I120+ The error message was: 'VssSyncStart' operation failed: IDispatch error #8451 (0x80042303)

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

Cause

This issue occurs when the I/O in the virtual machine is high and the quiescing operation is unable to flush all the data to disk, while further I/O is created.

This issue also occurs if you try to create a quiesced snapshot on a virtual machine that does not have free space. That is, if the free space on the virtual machine is 0 bytes.

Resolution

Note: It is reported that this issue occurs after installing a third-party backup agent inside the virtual machine without rebooting it. If this is the case, try a reboot of the virtual machine to determine if that resolves the issue before engaging in more advanced troubleshooting.

To resolve this issue, perform one of these options:

Verify VSS, guest, and backup product configuration. For additional steps on troubleshooting VSS, see Troubleshooting Volume Shadow Copy (VSS) quiesce related issues (1007696).

Reduce the amount of ongoing I/O to the virtual machine. This is accomplished using pre-freeze scripts or post-freeze scripts to quiesce application I/O. For more information, see the ESXi 6.5 Virtual Machine Administration Guide.

Opt for a crash-consistent snapshot (as opposed to application-consistent) of the virtual machine by avoiding quiescing of the file system.

If you do not want to quiesce the virtual machine during snapshot creation, there are several options. Choose one of these options, based on your environment:

Consider stopping the application before the backup and restarting it using the pre-freeze and post-thaw scripts which are a feature of VMware Tools.

If the snapshots are taken through the ESXi host using the vim-cmd command, set the option of quiescing to 0.

To get a list of virtual machines and their VMID, run the command:

vim-cmd vmsvc/getallvms

To set the quiescing to 0, run the command:

vim-cmd vmsvc/snapshot.create vmid [snapshotName] [snapshotDescription] [includeMemory] [quiesced]

For example, if a virtual machine named testVM has a VMID of 23, the command is:

vim-cmd vmsvc/snapshot.create 23 "SnapName" "Snap Description" 0 0

If the snapshots are taken through the ESXi host terminal using the vmware-cmd command, set the option of quiescing to 0.

Run this command to set quiescing to 0:

vmware-cmd cfg createsnapshot name description quiesce memory

For example:

vmware-cmd /vmfs/volumes/4adecc3a-62b367e8-5b15-001a4be960e0/VMname/VMname.vmx createsnapshot "Snap Name" "Snap Description" 0 0

If you are using a third-party backup product that does not allow you to configure for non-quiescent snapshots, remove the VSS component from the Windows guest operating system, provided as part of VMware Tools. This results in VMware Tools attempting to use an older sync driver. When you request a quiescent snapshot, VMware Tools does not find and utilize the VSS driver and then attempts to quiesce using the sync driver. To reinstall VMware Tools without the VSS option:

Uninstall VMware Tools (removing VMware Tools removes Vmware Tools features as well as  the VMXNET driver, see Choosing a network adapter for your virtual machine).

Allow the system to reboot.

Reinstall VMware Tools. Ensure that you click Custom Install.

Deselect VSS.

Notes:

This requires a reboot of the virtual machine. VMware recommends scheduling downtime before performing this action.

The option to deselect VSS and use the sync driver on Windows Server 2003 and later versions of Windows is no longer available. Any snapshot taken with the quiesce option uses VSS to quiesce the guest OS file system by default unless the Volume Shadow Copy service is disabled in the guest OS.

After the installation, you are able to take a snapshot where the quiescing operation is not performed, even if specifically requested.

Notes:

Microsoft does not support snapshots of Exchange servers. For more information on support for snapshots, see these Microsoft TechNet articles:

Exchange 2013 Virtualization

Exchange Server

When using the Symantec NetBackup tool with virtual machines running Microsoft Exchange, consider using the Symantec VSS provider. For more information, see the Veritas Netbackup for VMware Administrator's Guide. If VMware Tools was installed before the Symantec VSS, follow the NetBackup Admin Guide for information on uninstalling and reinstalling VMware Tools without the VMWare VSS. If you need to remove the Symantec VSS, contact Symantec for assistance with uninstalling/reinstalling the Symantec VSS service.

The issue occurs if any of the VSS writers are failing. Verify the list of writers before running the backup job and after the job is finished, verify if any VSS writer is failing. As the VSS writers are provided by third-party vendors, engage the vendor for any issues with them or to troubleshoot any failures of those writers.

Related Information

For related information, see:

Troubleshooting Volume Shadow Copy (VSS) quiesce related issues (1007696)

Unable to take quiesced snapshot of Windows Server virtual machine with gpt disks without MSR partition.

Location of log files for VMware products (1021806)

Enabling and disabling Windows 2008 and later application-consistent quiescing on ESXi/ESX (1028881)

Troubleshooting Volume Shadow Copy (VSS) quiesce related issues

Location of log files for VMware products

Enabling and disabling Windows 2008 and later application-consistent quiescing on ESXi/ESX

Supported Operating Systems and MSFT Active Directory Domain Functional Levels for VMware Horizon 8 2006 and later

For translated versions of this article, see:

Español: No se pueden crear instantáneas en modo inactivo porque la operación de instantáneas ha excedido el límite de tiempo para mantener el I/O detenido en la máquina virtual congelada (2033113)

Português: Não é possível criar um instantâneo desativado para novas sessões, pois a operação de instantâneos excedeu o tempo limite de permanência da E/S desativada na máquina virtual congelada (2032921)

Não é possível criar um instantâneo desativado para novas sessões, pois a operação de instantâneos excedeu o tempo limite de permanência da E/S desativada na máquina virtual congelada

No se pueden crear instantáneas en modo inactivo porque la operación de instantáneas ha excedido el límite de tiempo para mantener el I/O detenido en la máquina virtual congelada

无法创建静默快照，因为创建快照操作超过了拖延已冻结虚拟机中 I/O 的时限

スナップショット作成操作が、停止した仮想マシンでの I/O 保留時間制限を超えたため静止スナップショットを作成できない

ESXi ホストで仮想マシンの静止スナップショットの取得に失敗し、次のエラーが表示される： The guest OS has reported an error during quiescing. The error code was: 5 The error message was: Asynchronous operation failed: >VssSyncStart

Detectable by VMware SkylineTM

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