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TB107 Management Service and/or VDBs Unavailable After Storage Expansion Attempted




Alert Type



During an attempt to expand storage on one or more existing devices, the Continuous Data (formerly Virtualization) Engine becomes unresponsive, the management interface becomes unavailable, and VDBs may also become unresponsive or crash. Device expansion does not complete. Rebooting does not restore operation.

Contributing Factors

This article applies to the following versions of the Delphix engine:

Date Release
Apr 13, 2023
Mar 13, 2023 | Mar 20, 2023 |
Feb 13, 2023
Jan 12, 2023
Releases Prior to 2023
Major Release All Sub Releases



The engine management interface becomes unavailable and VDBs may become unresponsive after an attempt to expand a storage device, rendering the engine unresponsive. Device expansion does not complete. Since the IO pipeline is stalled, targets could see “NFS server not responding” type errors in the syslog/console of affected target environments. Rebooting the engine does not restore operation.


Upgrade to Continuous Data or later. 


This issue is fully resolved in Continuous Data and later versions. A reboot upgrade is required for the fix to be effective in upgrade to; upgrades to or later do not require a reboot upgrade, and fix can be delivered in a deferred upgrade (Delay the reboot).

Additional Information


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