Another post about IO Delay (but different) - snapraid/mergerfs

zuluromeo

Active Member
May 12, 2019
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Hello,

I am having issues with massive IO delay on my server. What I believe makes this different is that the Mint VM has sole use of the HDDs.

My setup:
Protectli i7-8550U CPU
Proxmox storage:
  • Samsung 860 EVO 2TB
  • LEVEN JMS300 mSATA SSD 2TB
VM - MintDE - 2 CPUs, 4G RAM, CPU set as host (previously used the default, as well)
Storage passed through as SCSI with "qm set":
  • Ironwolf 4TB x5
  • WD red 4TB x3
I believe the VM's disk is 64GB on the mSATA drive.

Storage is in a Probox 8-bay enclosure, connected via USB.

Running PVE 8.1.3.

I am combining the drives using mergerfs and running parity with snapraid. I have created a 16TB volume with two parity drives and every time I run snapraid sync, the VM quits with an IO error and the HDDs are offline. When I look at the server data, IO delay is very high.

I used to do this with Debian, previously, and it worked well. I decided to set it up again on Debian after mothballing it for a year, but I got a few wayland errors that I could not fix (also got the IO error). So I decided to try MintDE.

Is my issue the slow HDDs? The mSATA drive? Or something to do with snapraid?

In the past, I ran a Syncthing container that would upload to a cloud drive and it would also give me high IO delay. I feel like I am doing something incorrectly. Unfortunately, I do not have the funds to invest in a better computer.

Thanks!
 

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