[solved] Restoring of LXC container is very slow

citydweller

Renowned Member
Dec 19, 2015
15
3
68
Germany
Hi,

I'm using Proxmox VE 7.0-11 and a backup job is saving QEMU-VMs and LXC-containers to a Samba-Server over a 10 gigabit ethernet connection.

The backup process for an example LXC-container with about 2.6 GB used space and an archive size of 1.03 GB takes about a minute.

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But if I want to restore the same container, it's very, very slow and takes more than 2 hours.
SCR-20211022-bzl.png

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If I'm restoring an QEMU-VM with about 126 GB in space or restoring this LXC-container to the local-lvm storage, it's very, very fast.
SCR-20211022-cqq.png

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But as soon as I want to restore the LXC-container to my ZFS-storage it's very, very slow. What's wrong here? Any hints, tips?

Thank for any help in advance!
 
Problem solved: After setting back the sync of my zfs pool from sync to standard, the speed is very fast:
zfs set sync=standard Nameofstoragepool