I been experiencing freezes and slowdowns when downloading via LFTP (using NerdPacks) on Unraid, I have managed to narrow it down to some IO issues, as put in the screenshots. But I'm at a loss as to what is causing the issues. I have tried running the download with Docker turned 'on' and 'off' and also by setting the paths to 'mnt/user' and 'mnt/cache', but BTRFS still spikes to 99% usage, and if downloading to 'user' SHFS to 99%. If I download to 'cache' BTRFS still spikes to 99% usage but also LFTP to 99% (as seen in the screenshot below).

 

 

The dips/freezes in the network, are matching to the spikes in the storage writes, as well as the 99% spikes (screenshot above). I download to the cache only, which then invokes mover every night. My Docker containers are stored on a sperate SSD, and I've eliminated them being the issue, by disabling Docker and running LFTP and still getting the issue.

 

 

Server Spec:

i7 2600k

32GB RAM

x2 250GB Crucial SSDs

x4 8TB WD Drives 

tower-diagnostics-20201125-0958.zip

Edited November 26, 20205 yr by shimi269
Spelling and Grammer

*Update*

Change the cache drive from BTRFS to XFS, in the first test it appears to have made a difference. IO still sees some spikes but the network and download doesn't pause. Will carry on testing to see if the issue was with the Filesystem choice.

 

After extensive testing, the issue is now resolved, it was just changing the cache drives file system to XFS and not using BTRFS