ESXI 7.0 VM with enabled LWD filter is hung during vMotion and is stuck 68%

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• The VM is hung during vMotion and is stuck 68%
• VM is enabled with the LWD filter which is used by the backup solution (VCDR, Dell PPDM, etc..)
• When review vobd in /var/log/vobd.log that indicate vmx core dump please note that it require core dump to debugged for confirmation of the issue

2024-XX-XXTXX:XX:XX.XXZ: [UserWorldCorrelator] 9501613047004us: [vob.uw.core.dumped] /bin/vmx(19053257) /vmfs/volumes/6372c039-fb2a92ea-b644-e4434b62cc70/VM_NAME/vmx-zdump.000

• In the vmware.log file of a virtual machine you may see the below which indicate a storage layer issue 

2024-XX-XXTXX:XX:XX.XX info dpd[5956700] [Originator@6876 sub=SnapshotOperations opID=07152255-2258] Cleanup 1 reads

Environment

VMware vSphere ESXi 7.0

Cause

DPD panic while there is an ongoing sync with outstanding reads ( I/Os) to the LWD filter. The outstanding I/O can be due to slow storage

Resolution

This is resolved in vSphere 8.0