Virtual machine vMotion and Backup fails with dell tsdm service panic

Products

• VMware vSphere ESXi 7.0
• VMware vSphere ESXi 8.0

Issue/Introduction

Virtual machine vMotion and Backup fails with dell tsdm service panic. This environment is protected with Dell PowerProtect Data Manager.

Environment

VMware vSphere ESXi 8.0
VMware vSphere ESXi 7.0
PowerProtect Data Manager (with Transparent Snapshot Data Mover (TSDM))

Cause

The Dell tsdm service panic'd in the middle of an active delta sync operation and resources were not released properly.

-var/run/log/tsdm.log

2025-02-28T13:00:24.200Z tsdm[2100630]: none TSDM[0x000000XXXXXX] [sub=SdmHooks]: appExitImpl.cpp:41 PanicExit: Panic: ChangePageOwner failed. totalNumberOfPages='1', allocatedPagesCount='0' - /space/jenkins/workspace/mob_sdm-portable_release_19.15.0/src/core/src/messages/pages.cpp:92
2025-02-28T13:00:26.460Z tsdm[19357972]: info TSDM[0x0000001aXXXXX] [sub=Sdm]: appUtils.cpp:36 InitApp: Initialized app TSDM [build type: release]
2025-02-28T13:00:26.460Z tsdm[19357972]: info TSDM[0x0000001aXXXXX] [sub=Sdm]: sdmApiImpl.cpp:186 Start: SDM is starting [build type: release, build version: 19.15.0.3]

in dpd.log, You see many logs that cancel snapshot operation returns SyncInProgress fault.

-var/run/log/dpd.log

2025-02-28T13:30:25.442Z error dpd[2102314] [Originator@6876 sub=PeRegistry opID=0d52391c-391f] Cannot cancel snapshot 'xxxxxxxxx' of protected entity '31': There is an ongoing sync operation 'XXXXXX-1'

2025-02-28T13:30:25.442Z error dpd[2102314] [Originator@6876 sub=Task opID=0d52391c-391f] Task 'Dp.Task.CancelSnapshot.xxxxxxx.xxxxxx' failed with error: (dp.fault.SyncInProgress) {
--> faultCause = (vmodl.MethodFault) null,
--> faultMessage = <unset>,
--> syncId = "xxxxxxx-1"
--> msg = ""
--> }

Resolution

In future release of  vSphere 8.0.3 and 9.0.0 , a change will be made to be more resilient to a tsdm panic issue in the middle of sync. Contact Dell about resolution to the TSDM panic so as to avoid this condition.