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Knowledge Base

Delete All snapshot operation results in a Consolidate Helper snapshot when a datastore has insufficient disk space (1003302)

Last Updated: 9/9/2014Categories: TroubleshootingTotal Views: 142239Language:
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Details

If you try to initiate a Delete All snapshot for a virtual machine using Snapshot Manager, and if that virtual machine is on a datastore that does not have sufficient space for the snapshot, the following message displays in VMware Infrastructure (VI) Client:

msg.hbacommon.outofspace: there is no more space for the redo log of <VMname>-0000xx.vmdk.

You are given the option to abort or retry.

If you choose Abort, the virtual machine is powered off, the snapshot is aborted, and a Consolidate Helper snapshot is created. The Snapshot Manager UI displays that Consolidate Helper snapshot. You can delete the Consolidate Helper snapshot after you have made space available.

If you click Retry, the Snapshot Manager returns to Consolidate Helper snapshot mode unless you have made more disk space available.

Solution

Note: Most snapshot related issues have improved with changes to the Delete All snapshot process in the patch releases for ESX/ESXi 3.5 and 4.0. For more information see:

VMware ESX 3.5, Patch ESX350-201006401-SG: Updates VMkernel, VMware Tools, hostd, VMX, VMnix (1022899)

VMware ESXi 3.5, Patch ESXe350-201006401-I-SG: Updates firmware (1020052)

VMware ESX 4.0, Patch ESX400-201006201-UG: Updates the VMware ESX 4.0 Core and CIM components (1017721)

VMware ESXi 4.0, Patch ESXi400-201006201-UG: Updates Firmware(1017739)

To resolve this issue, free up disk space if possible, or extend the VMFS volume using VI Client.

To extend the VMFS volume:

Select the host on which the virtual machine resides and click the Configuration tab.

Select the datastore on which the virtual machine resides and click Properties.

Note: If there is no available storage, a new LUN must be presented to every ESX host that can see the LUN.

In the dialog that appears, click Add Extent and follow the prompts in the Add Extend wizard to add an extent.

Perform a rescan on every ESX host that is being presented the new LUN so that the addition of the extent is detected.

After you have extended the VMFS volume, you can check the Retry option of the Redo log pop-up.

Caution: When using Delete All in the Snapshot Manager, the snapshot furthest from the base disk is committed to its parent, causing that parent snapshot to grow. When that commit is complete, that snapshot is removed and the process starts over on the newly updated snapshot to its parent. This continues until every snapshot has been committed. This can lead to an aggressive use of additional disk space if the snapshots are large. Use care when exercising this option if there is not much space available on the datastore.

If the snapshot manager does not display any snapshots, see Committing snapshots when there are no snapshot entries in the snapshot manager (1002310).

If you have run out of space and cannot delete all snapshots, clone the virtual machine to a different datastore (you can select a different destination for each virtual disk in the clone wizard). All of the snapshots are committed to the clone virtual machine.

If you have vCenter Server 4.x, you can prevent this issue by performing the steps in Configuring VMware vCenter Server to send alarms when virtual machines are running from snapshots (1018029).

Additional Information
For translated versions of this article, see:

Español: La operación Delete All de una instantánea tiene como resultado una instantánea Consolidate Helper cuando un almacén de datos no tiene espacio suficiente en el disco (2033005)

Português: A operação de instantâneo Apagar Tudo resulta em um instantâneo de Ajuda Consolidada, quando o datastore tiver espaço em disco insuficiente (2032475)

日本語: データストアのディスク領域が不足した場合の Consolidate Helper スナップショットの「すべて削除」スナップショット操作結果 (2078420)

简体中文: 数据存储磁盘空间不足时，“删除所有快照”操作会导致产生 Consolidate Helper 快照 (2074623)

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