Chunk verification speedup discussion, similar speedup opportunities elsewhere

[Adam Kalisz]

Hi list,

I missed whether the chunk verification speedup when loading chunks got
applied or whether it was somehow included in the S3-like storage
option change set.

In
https://forum.proxmox.com/threads/abysmally-slow-restore-from-backup.133602/page-7
we have discussed some other opportunities for speedup using similar
patterns. People mentioned LXC container restore speed and  host-based
backup restore, which looking at the code for the latter seems like a
similar async loop pattern would bring some improvement without too
much trouble:

https://github.com/proxmox/proxmox-backup/blob/4940514b0f05d6cd6a5f711edfdd47c1fa41b537/proxmox-backup-client/src/main.rs#L1109

Similarly the sync performance between two Proxmox Backup Servers and
live-migration got mentioned in various places.

Btw. congrats on the 4.0 beta.

Regards
Adam