Proxmox VM's hanging when one has issues (lemmy.world)

submitted 2 years ago by root@lemmy.world to c/selfhosted@lemmy.world

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I've noticed that sometimes when a particular VM/ service is having issues, they all seem to hang. For example, I have a VM hosting my DNS (pihole) and another hosting my media server (jellyfin). If Jellyfin crashes for some reason, my internet in the entire house also goes down because it seems DNS is unable to be reached for a minute or so while the Jellyfin VM recovers.

Is this expected, and is there a way to prevent it?

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[-] apigban@lemmy.dbzer0.com 1 points 2 years ago

I had this issue when I used kubernetes, sata SSDs cant keep up, not sure what Evo 980 is and what it is rated for but I would suggest shutting down all container IO and do a benchmark using fio.

my current setup is using proxmox, rusts configured in raid5 on a NAS, jellyfin container.

all jf container transcoding and cache is dumped on a wd750 nvme, while all media are store on the NAS (max. BW is 150MBps)

you can monitor the IO using IOstat once you've done a benchmark.

this post was submitted on 10 Oct 2023

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