Verification "error" 500 Internal Server Error on S3 datastore

Jan 13, 2026
8
1
3
Hi all.

During some large VM (1.5TB pure data, 3TB VM) verify jobs I am seeing this more often than not...

Mar 06 10:42:20 pbs proxmox-backup-proxy[1989155]: <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>InternalError</Code><Message>We encountered an internal error. Please retry the operation again later.</Message><RequestId>F0D8F57082ADB500:B</RequestId><HostId>w+X+/wgFM0iOkVAesuwh43iDK0Bg1mFLWoW2CHw47sWtCeoYgib6a1pV30kbRbTsWznv1VNpT6Xo</HostId><CMReferenceId>MTc3Mjc5MzQzMCBSNDAyLVU0Ni5wcm9kOC5sZDcgNTYxNDIwMDQ1OjUzODg4MTQ6ODc=</CMReferenceId></Error>
Mar 06 10:42:20 pbs proxmox-backup-proxy[1989155]: can't verify chunk, load failed - unexpected status code 500 Internal Server Error

This is accessing a Wasabi bucket. I'm pretty sure the data is fine as the same data has verified previously, VM restored successfully and sync'd back to the local backup just fine. Seems this is an glitch accessing the single chunk but it does leave me with VMs with failed verification. I've tried from 2 different locations with 1Gb and 500Mb broadband respectively. Are there any plans to deal with this glitch and more volatile internet based storage as in retries etc?