Write speed in container with LVM thin drive slow

BigChris

Member
Apr 28, 2022
45
2
13
I have set up a turnkey file server for data exchange via NFS or Samba. I have integrated a drive into this via mountpoint. The mountpoint is located in an LVM thin.
Now I have the phenomenon that the write speed is slow when I copy over the network. I get about 50MB/s with a stable gigabit connection. IPerf3 shows speeds of 100MB/s. The uploads stop at 100% (the progress bar) and it then takes a while for the copying to continue. This happens with nfs, as well as samba or FTP.
The downloads run at 100MB/s.
What could be the reason why the write speed is so slow?

Proxmox 8.1.4 on Lenovo m720q tiny
LXC Debian 11, turnkey file server, installed on LVM NVME Kingston 2TB
Data hard disk on LVM-Thin (SSD 2TB Samsung Evo 870)

Regards
Christian

Translated with DeepL.com (free version)
 

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