I/O and usage of a particular VM Disk

toxic

Active Member
Aug 1, 2020
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Hello,

I'd like to track the usage of some VM disks, in terms of I/O, bandwith, maybe latency, and see over a few days or weeks what is actually being used by my VM in term of storage performance.

I would like to know this for my homeassistant VM as well as my main docker host VM (running mainly reverse-proxy and a few docker services that mainly hit NFS storage, so mostly logs and maybe some cache, the overlay and such on the VM disk)

I would like to know this because I'm considering creating a small ceph cluster with unexpensive SATA SSDs and dedicating 1 or 2 gigabit NIC to ceph, so that these 2 VMs actually have high availability, but I don't want to crash performance, so I'd like to measure what kind of performance I'm actually using ;)

Any help would be very much appreciated !

Thanks in advance
 

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