Symptoms
LWD based snapshot fails for some VMs and VM crashes
VC event : LWD snapshot failed alert.
VC event : VMware ESX unrecoverable error: (worker-2935733) VERIFY bora/esx/apps/dp/iofilter/lwdSes.c:5134
The bellow error logs are noticed under vmx.log file.
Wa(03) filtPoll - IOFIPC: c3: Error on '152' while waiting for data to read: Connection reset by peer
Er(02) worker-2934497 - LWD: Failed to get a response for IPC client for request C489421A60 for disk C4289C86F0; error: Connection reset by peer
Wa(03) filtPoll - IOFIPC: c4: IPC client made no request, or could not write a request, before the timeout expired
Er(02) worker-2934749 - LWD: Failed to get a response for IPC client for request C489421A60 for disk C4289C86F0; error: Connection timed out
In(05) vcpu-0 - DISKLIB-LIB_BLOCKTRACK : Resuming from change tracking info file /vmfs/volumes/07305f41-214ad5c3/TestVM/TestVM-ctk.vmdk.
Wa(03) filtPoll - IOFIPC: c5: Error on '152' while waiting for data to read: Connection reset by peer
Er(02) worker-2934497 - LWD: Failed to get a response for IPC client for request C489421A60 for disk C4289C86F0; error: Connection reset by peer
Wa(03) filtPoll - IOFIPC: c6: IPC client made no request, or could not write a request, before the timeout expired
Er(02) worker-2934497 - LWD: Failed to get a response for IPC client for request C489421A60 for disk C4289C86F0; error: Connection timed out
Wa(03) vcpu-0 - LWD: Error sending CloseDisk IPC to daemon for disk C4289C86F0: Connection timed out
In(05) vcpu-0 - LWD: Closed disk C4289C86F0
Purpose
To provide potential solution to snapshot failure and VM crash.
Issue noticed on VMware ESXi 7.0.3 Build:19482537
Cause
The IO Filter crashes while SES are half created, subsequent LWD operations fail when the filter attempts to open the old SES.
Impact / Risks
Unable to completed the Snapshot.
VM crash during the Snapshot.
Resolution
The Issue has fixed on ESXi version 7.0u3o build 22348816 and above version.
Quick links
ESXI Build Number and Version: https://kb.vmware.com/s/article/2143832
