VM becomes unresponsive during Veeam backup

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sudomaster.ljs

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Oct 29, 2022
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When a Veeam backup job runs against a VM on our HDD-backed Ceph cluster, the VM becomes unresponsive partway through the backup. In some cases, it recovers automatically once the job completes. Sometimes, it requires a hard reset to come back online.

We have reproduced this across multiple VMs, and it appears to affect only our HDD-based clusters. Backups using Proxmox Backup Server from the same cluster complete without issue. In both cases, the backup source and target storage are the same, and the backups use the same network path.

Has anyone experienced a similar issue or any insight into its possible cause?
 
Hi @sudomaster.ljs ,
There have been multiple reports in the last few years of users experiencing similar issues with the combination of Veeam and PVE. Unfortunately I do not recall any of the reporters coming back with a concrete resolution.
Note that Veeam has a unique way of integrating with PVE that may be playing a role here. Have you reached out to them to start the investigation?

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
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