I have completed most of the work to upgrade from ESXi6.5 -> 6.7U3. I’m in the last part.. The rolling upgrade of ESXi servers themselves. I’ve completed 4 / 10 of them.
I’m starting to have issues with my VEEAM backups. The snapshot removal is taking longer on several virtual machines. While the removal is taking place, the Virtual Machine becomes unresponsive. Once the removal completes, the virtual machine starts working properly again.
I don’t think it’s a storage issue. We have an all-SSD storage array, that demonstrates low latency, and some of these snapshots are very small. It feels more like a locking type issue to me. The problem started when I introduced 6.7, and while it has mostly occurred on virtual machines running on the 4 updated hosts, it has even happened on 6.5 hosts.
I would like to research the issue in-depth. Can someone tell me where ESXi logs the snapshot removal process? I believe there is some info in the virtual machine directory itself in the vmware.log file, but .. hostd? vpxd? Does VCENTER have any logs?
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